/* ============================================
   TRỊ GAI CỘT SỐNG - Main Stylesheet
   Design: Ấm áp, chân thật, dễ đọc
   ============================================ */

/* --- CSS Variables --- */
:root {
    /* Colors - Warm & Natural */
    --color-primary: #8B4513;        /* Saddle Brown - Ấm áp */
    --color-primary-light: #A0522D;  /* Sienna */
    --color-primary-dark: #5D2E0C;
    --color-secondary: #2E7D32;      /* Green - Tự nhiên */
    --color-secondary-light: #4CAF50;
    
    --color-bg: #FDF8F3;             /* Warm white */
    --color-bg-alt: #F5EDE4;         /* Slightly darker */
    --color-bg-dark: #E8DDD2;
    
    --color-text: #3D3D3D;           /* Dark gray - dễ đọc */
    --color-text-light: #666666;
    --color-text-muted: #888888;
    
    --color-accent: #D4A574;         /* Warm tan */
    --color-warning: #E65100;
    --color-success: #2E7D32;
    --color-error: #C62828;
    
    /* Typography */
    --font-heading: 'Crimson Text', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(139, 69, 19, 0.08);
    --shadow-md: 0 4px 12px rgba(139, 69, 19, 0.12);
    --shadow-lg: 0 8px 24px rgba(139, 69, 19, 0.16);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

ul, ol {
    list-style: none;
}

/* --- Container --- */
.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--space-sm);
}

strong {
    font-weight: 600;
    color: var(--color-primary-dark);
}

em {
    font-style: italic;
    color: var(--color-text-light);
}

blockquote {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-style: italic;
    padding: var(--space-md);
    border-left: 4px solid var(--color-accent);
    background: var(--color-bg-alt);
    margin: var(--space-md) 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.section-title {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: var(--space-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: var(--space-sm) auto 0;
    border-radius: 2px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(253, 248, 243, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--space-sm) 0;
    box-shadow: var(--shadow-sm);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    padding: var(--space-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

.btn-nav {
    background: var(--color-primary);
    color: white !important;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
}

.btn-nav:hover {
    background: var(--color-primary-light);
}

.btn-nav::after {
    display: none;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-primary);
    cursor: pointer;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    padding: calc(var(--space-xl) + 60px) 0 var(--space-xl);
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    letter-spacing: 0.1em;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.hero-divider {
    width: 80px;
    height: 2px;
    background: var(--color-accent);
    margin: var(--space-md) auto;
}

.hero-note {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-text-light);
    font-style: italic;
}

/* ============================================
   SYMPTOMS SECTION
   ============================================ */
.symptoms {
    padding: var(--space-xl) 0;
    background: white;
}

.symptoms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.symptom-card {
    text-align: center;
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.symptom-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.symptom-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
}

.symptom-icon i {
    font-size: 1.5rem;
    color: white;
}

.symptom-card p {
    font-size: 0.95rem;
    color: var(--color-text);
    margin: 0;
}

.symptoms-conclusion {
    text-align: center;
    font-size: 1.2rem;
    color: var(--color-text);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-bg-dark);
}

/* ============================================
   REALITY SECTION
   ============================================ */
.reality {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: white;
}

.reality-content {
    text-align: center;
}

.reality-title {
    font-size: 2rem;
    color: white;
    margin-bottom: var(--space-md);
}

.reality-title .highlight {
    display: block;
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-top: var(--space-xs);
}

.reality-intro {
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

.reality-list {
    max-width: 400px;
    margin: 0 auto var(--space-lg);
    text-align: left;
}

.reality-list li {
    padding: var(--space-xs) 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.reality-list i {
    color: var(--color-warning);
}

.reality-fear {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    max-width: 500px;
    margin: 0 auto;
}

.reality-fear p {
    font-size: 0.95rem;
    opacity: 0.8;
    margin-bottom: var(--space-sm);
}

.reality-fear blockquote {
    background: transparent;
    border-left-color: var(--color-accent);
    color: white;
    padding: var(--space-sm);
    margin: 0;
    font-size: 1.1rem;
}

/* ============================================
   STORY SECTION
   ============================================ */
.story {
    padding: var(--space-xl) 0;
    background: var(--color-bg);
}

.story-timeline {
    position: relative;
    padding-left: 40px;
}

.story-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-lg);
}

.timeline-marker {
    position: absolute;
    left: -40px;
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--color-bg);
}

.timeline-marker span {
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
}

.timeline-content {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.timeline-content p {
    margin-bottom: var(--space-xs);
}

.timeline-content p:last-child {
    margin-bottom: 0;
}

.worry {
    background: #FFF3E0;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-warning);
    margin-top: var(--space-sm);
}

.pain-list {
    margin: var(--space-sm) 0;
}

.pain-list li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.pain-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-warning);
    font-weight: bold;
}

.negative-thought {
    background: #FFEBEE;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    color: var(--color-error);
    margin-top: var(--space-sm);
}

/* ============================================
   TURNING POINT SECTION
   ============================================ */
.turning-point {
    padding: var(--space-xl) 0;
    background: white;
}

.turning-point .section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.title-icon {
    font-size: 2rem;
}

.turning-content {
    max-width: 700px;
    margin: 0 auto;
}

.memory-box {
    background: var(--color-bg);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

.dialogue {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
}

.dialogue .question {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

.dialogue .answer {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-primary-dark);
    margin: 0;
    padding-left: var(--space-md);
    border-left: 3px solid var(--color-secondary);
}

.action-box {
    background: #E8F5E9;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

.action-box h3 {
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.result-box {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    color: white;
}

.result-box h3 {
    color: white;
    margin-bottom: var(--space-md);
    text-align: center;
}

.result-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.result-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
}

.result-item.highlight {
    background: rgba(255, 255, 255, 0.3);
}

.result-item .day {
    font-weight: 600;
    min-width: 100px;
}

.result-item .outcome {
    flex: 1;
}

/* ============================================
   LIVING WITH SECTION
   ============================================ */
.living-with {
    padding: var(--space-xl) 0;
    background: var(--color-bg);
    text-align: center;
}

.honest-note {
    font-size: 1.2rem;
    max-width: 500px;
    margin: 0 auto var(--space-lg);
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.method-card {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

.method-card:hover {
    transform: translateY(-4px);
}

.method-icon {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.method-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.method-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin: 0;
}

.important-mindset {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    max-width: 500px;
    margin: 0 auto var(--space-lg);
    text-align: left;
}

.important-mindset h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    text-align: center;
}

.important-mindset li {
    padding: var(--space-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.important-mindset i {
    color: var(--color-success);
}

.mindset-sub {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-light);
}

.btn-detail {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: var(--color-primary);
    color: white;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.btn-detail small {
    font-size: 0.7rem;
    font-weight: 400;
    opacity: 0.9;
}

.btn-detail:hover {
    background: var(--color-primary-light);
    color: white;
    transform: translateX(4px);
}

/* ============================================
   RESULTS SECTION
   ============================================ */
.results {
    padding: var(--space-xl) 0;
    background: white;
}

.results-content {
    max-width: 700px;
    margin: 0 auto;
}

.current-state {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.current-state .lead {
    font-size: 1.3rem;
    margin-bottom: var(--space-md);
}

.activities {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.activity {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: #E8F5E9;
    color: var(--color-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.doctor-feedback {
    background: var(--color-bg);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    position: relative;
}

.doctor-feedback .quote-icon {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    color: var(--color-accent);
    opacity: 0.5;
    font-size: 2rem;
}

.doctor-feedback blockquote {
    background: white;
    font-size: 1.1rem;
}

.doctor-feedback .note {
    font-style: italic;
    color: var(--color-text-light);
    text-align: center;
    margin: 0;
}

/* ============================================
   SIGNS SECTION
   ============================================ */
.signs {
    padding: var(--space-xl) 0;
    background: var(--color-bg-alt);
}

.signs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.sign-card {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.sign-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-sm);
    font-size: 1.3rem;
}

.sign-card.wrong .sign-icon {
    background: #FFEBEE;
    color: var(--color-error);
}

.sign-card.right .sign-icon {
    background: #E8F5E9;
    color: var(--color-success);
}

.sign-card.success .sign-icon {
    background: #FFF8E1;
    color: #F9A825;
}

.sign-card p {
    margin-bottom: var(--space-xs);
}

.verdict {
    font-size: 0.9rem;
    font-weight: 500;
}

.sign-card.wrong .verdict {
    color: var(--color-error);
}

.sign-card.right .verdict {
    color: var(--color-success);
}

.sign-card.success .verdict {
    color: #F9A825;
}

/* ============================================
   GRATITUDE SECTION
   ============================================ */
.gratitude {
    padding: var(--space-xl) 0;
    background: white;
    text-align: center;
}

.gratitude-intro {
    margin-bottom: var(--space-lg);
}

.no-sell {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.donation-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    max-width: 700px;
    margin: 0 auto var(--space-lg);
}

.donation-card {
    background: var(--color-bg);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.donation-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.donation-card.featured {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
}

.donation-card .amount {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.donation-card.featured .amount {
    color: white;
}

.donation-card .meaning {
    font-size: 0.95rem;
    margin: var(--space-xs) 0 0;
}

.donation-note {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.payment-methods {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.payment-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.payment-btn.paypal {
    background: #003087;
    color: white;
}

.payment-btn.paypal:hover {
    background: #001F5C;
    color: white;
}

.payment-btn.bank {
    background: var(--color-secondary);
    color: white;
}

.payment-btn.bank:hover {
    background: var(--color-secondary-light);
    color: white;
}

/* ============================================
   SHARE SECTION
   ============================================ */
.share-section {
    padding: var(--space-lg) 0;
    background: var(--color-bg);
}

.share-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.share-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.share-note {
    font-style: italic;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.share-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.share-btn:hover {
    transform: scale(1.1);
    color: white;
}

.share-btn.facebook {
    background: #1877F2;
}

.share-btn.zalo {
    background: #0068FF;
    font-size: 0.7rem;
    font-weight: 700;
}

.share-btn.copy {
    background: var(--color-text-light);
}

/* ============================================
   DISCLAIMER SECTION
   ============================================ */
.disclaimer {
    padding: var(--space-md) 0;
    background: #FFF3E0;
}

.disclaimer-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.disclaimer-content h3 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-size: 1rem;
    color: var(--color-warning);
    margin-bottom: var(--space-sm);
}

.disclaimer-content p {
    font-size: 0.9rem;
    margin: 0;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--space-lg) 0;
    background: var(--color-primary-dark);
    color: white;
    text-align: center;
}

.footer-quote {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: white;
}

/* ===========================================
   Update Log / Timeline Section
   =========================================== */
.update-log {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #FDF8F3 0%, #F5EDE4 100%);
}

.update-log h2 {
    text-align: center;
    font-family: var(--font-heading);
    color: var(--primary);
    font-size: 2rem;
    margin-bottom: var(--space-xs);
}

.update-log h2 i {
    margin-right: 0.5rem;
    color: var(--secondary);
}

.update-log .section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: var(--space-lg);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 60px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--secondary), var(--primary));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -48px;
    top: 5px;
    width: 16px;
    height: 16px;
    background: var(--secondary);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}

.timeline-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
}

.timeline-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    left: -100px;
    top: 0;
    width: 70px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-light);
    display: none; /* Hide on mobile, show on desktop */
}

.timeline-date .day {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.timeline-date .month {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-date .year {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--secondary);
}

.timeline-content {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.timeline-content h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* Show date on desktop */
@media (min-width: 769px) {
    .timeline {
        padding-left: 120px;
    }
    
    .timeline::before {
        left: 80px;
    }
    
    .timeline-item::before {
        left: 12px;
    }
    
    .timeline-date {
        display: flex;
    }
}

/* ===========================================
   Quick Links Section - 6 Trang Con
   =========================================== */
.quick-links-section {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #FDF8F3 0%, #F5EDE4 100%);
}

.quick-links-section .section-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.quick-links-section .section-title i {
    color: var(--secondary);
    margin-right: 0.5rem;
}

.quick-links-section .section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: var(--space-lg);
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.quick-link-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.quick-link-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
    border-color: var(--secondary);
}

.quick-link-card .card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.quick-link-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.quick-link-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 768px) {
    .quick-links-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-link-card {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
    }
    
    .quick-link-card .card-icon {
        font-size: 2rem;
        margin-bottom: 0;
    }
    
    .quick-link-card h3 {
        margin-bottom: 0.25rem;
    }
}

/* Mobile timeline adjustments */
@media (max-width: 768px) {
    .timeline {
        padding-left: 40px;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item::before {
        left: -38px;
        width: 12px;
        height: 12px;
    }
    
    .timeline-content h4 {
        font-size: 1rem;
    }
    
    .timeline-content h4::before {
        content: attr(data-date);
        display: block;
        font-size: 0.75rem;
        color: var(--secondary);
        font-weight: 600;
        margin-bottom: 0.25rem;
    }
}

/* Footer Contact */
.footer-contact {
    margin: var(--space-lg) 0;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
}

.footer-contact h4 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
    color: rgba(255, 255, 255, 0.9);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.85);
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-2px);
}

.contact-item i {
    font-size: 1rem;
}

/* ============================================
   CONVERSION OPTIMIZATION COMPONENTS
   Sticky CTA, Exit Popup, Social Proof, Progress
   ============================================ */

/* ========== STICKY DONATE BUTTON ========== */
.sticky-donate {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.sticky-donate.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.sticky-donate-content {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #2E7D32 0%, #1B5E20 100%);
    color: white;
    padding: 14px 24px;
    border-radius: 50px;
    box-shadow: 0 8px 32px rgba(46, 125, 50, 0.4);
    position: relative;
    overflow: hidden;
}

.sticky-donate-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.sticky-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: #2E7D32;
    border-radius: 50px;
    transform: translate(-50%, -50%);
    animation: pulse 2s infinite;
    z-index: -1;
}

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

.sticky-icon {
    font-size: 1.3rem;
}

.sticky-text {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
}

.sticky-donate:hover .sticky-donate-content {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(46, 125, 50, 0.5);
}

/* ========== SOCIAL PROOF TOAST ========== */
.social-proof-toast {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 9998;
    display: flex;
    align-items: center;
    gap: 12px;
    background: white;
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border-left: 4px solid #2E7D32;
    max-width: 320px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-100%);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.social-proof-toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.toast-avatar {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-name {
    font-size: 0.9rem;
    color: #333;
    margin: 0 0 2px 0;
}

.toast-action {
    font-size: 0.85rem;
    color: #2E7D32;
    margin: 0 0 2px 0;
}

.toast-time {
    font-size: 0.75rem;
    color: #999;
    margin: 0;
}

.toast-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: #999;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.toast-close:hover {
    color: #333;
}

/* ========== EXIT INTENT POPUP ========== */
.exit-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.exit-popup-overlay.show {
    opacity: 1;
    visibility: visible;
}

.exit-popup {
    background: white;
    border-radius: 20px;
    max-width: 480px;
    width: 100%;
    position: relative;
    transform: scale(0.8) translateY(-30px);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    overflow: hidden;
}

.exit-popup-overlay.show .exit-popup {
    transform: scale(1) translateY(0);
}

.exit-popup-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    background: #f5f5f5;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.exit-popup-close:hover {
    background: #e0e0e0;
    color: #333;
}

.exit-popup-content {
    padding: 40px 30px 30px;
    text-align: center;
}

.exit-emoji {
    font-size: 4rem;
    margin-bottom: 15px;
}

.exit-popup-content h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: #8B4513;
    margin: 0 0 15px 0;
}

.exit-message {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.7;
    margin-bottom: 25px;
}

.exit-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 25px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2E7D32;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: #777;
    margin-top: 5px;
    display: block;
}

.exit-progress {
    background: #F5EDE4;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 25px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: #666;
}

.progress-amount {
    font-weight: 600;
    color: #8B4513;
}

.progress-bar {
    height: 12px;
    background: #E8DDD2;
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #2E7D32 0%, #4CAF50 100%);
    border-radius: 6px;
    transition: width 1s ease;
}

.progress-note {
    font-size: 0.85rem;
    color: #888;
    margin: 10px 0 0 0;
}

.exit-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exit-btn {
    padding: 16px 30px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.exit-btn.primary {
    background: linear-gradient(135deg, #2E7D32 0%, #1B5E20 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(46, 125, 50, 0.3);
}

.exit-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(46, 125, 50, 0.4);
}

.exit-btn.secondary {
    background: white;
    color: #1877F2;
    border: 2px solid #1877F2;
}

.exit-btn.secondary:hover {
    background: #1877F2;
    color: white;
}

.exit-note {
    font-size: 0.85rem;
    color: #999;
    margin: 20px 0 0 0;
    font-style: italic;
}

/* ========== FLOATING PROGRESS (Mobile) ========== */
.floating-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9997;
    background: white;
    padding: 12px 20px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(100%);
    transition: all 0.3s ease;
    display: none;
}

.floating-progress.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.fp-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.fp-text {
    font-size: 0.85rem;
    color: #666;
    white-space: nowrap;
}

.fp-bar {
    flex: 1;
    height: 8px;
    background: #E8DDD2;
    border-radius: 4px;
    overflow: hidden;
}

.fp-fill {
    height: 100%;
    background: linear-gradient(90deg, #2E7D32 0%, #4CAF50 100%);
    border-radius: 4px;
}

/* ========== FLOATING SHARE SIDEBAR ========== */
.floating-share-sidebar {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.floating-share-sidebar.show {
    opacity: 1;
    visibility: visible;
}

.share-incentive {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-size: 0.75rem;
    color: #2E7D32;
    font-weight: 600;
    padding: 10px 5px;
    background: #E8F5E9;
    border-radius: 20px;
    margin-bottom: 5px;
}

.share-btn-float {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    border: none;
    cursor: pointer;
}

.share-btn-float:hover {
    transform: scale(1.15);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.share-btn-float.facebook { background: #1877F2; }
.share-btn-float.twitter { background: #1DA1F2; }
.share-btn-float.linkedin { background: #0A66C2; }
.share-btn-float.whatsapp { background: #25D366; }
.share-btn-float.zalo { background: #0068FF; }
.share-btn-float.copy { background: #6c757d; }

.share-count {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: white;
    padding: 8px 12px;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-top: 5px;
}

.share-count .count-number {
    font-size: 1.1rem;
    font-weight: 700;
    color: #2E7D32;
}

.share-count .count-label {
    font-size: 0.7rem;
    color: #666;
}

/* ========== GOLDEN QUOTE SECTION ========== */
.golden-quote-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #FDF8F3 0%, #F5EDE4 100%);
}

.golden-quote {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    padding: 40px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(139, 69, 19, 0.1);
}

.golden-quote .quote-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.golden-quote .quote-text {
    font-family: 'Crimson Text', serif;
    font-size: 1.6rem;
    line-height: 1.8;
    color: #5D2E0C;
    font-style: italic;
    margin: 0 0 25px 0;
}

.golden-quote .quote-author {
    font-size: 1rem;
    color: #8B4513;
    font-style: normal;
    display: block;
}

/* ========== EMOTIONAL STORY BLOCK ========== */
.emotional-story-block {
    padding: 60px 0;
    background: white;
}

/* ========== RESPONSIVE FOR FLOATING SHARE ========== */
@media (max-width: 768px) {
    .floating-share-sidebar {
        display: none;
    }
    
    .golden-quote .quote-text {
        font-size: 1.3rem;
    }
}

.fp-percent {
    font-size: 0.9rem;
    font-weight: 700;
    color: #2E7D32;
    min-width: 40px;
    text-align: right;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .sticky-donate {
        bottom: 20px;
        right: 20px;
    }
    
    .sticky-donate-content {
        padding: 12px 18px;
    }
    
    .sticky-text {
        display: none;
    }
    
    .sticky-icon {
        font-size: 1.5rem;
    }
    
    .social-proof-toast {
        bottom: 80px;
        left: 15px;
        right: 15px;
        max-width: none;
    }
    
    .exit-popup-content {
        padding: 30px 20px 25px;
    }
    
    .exit-popup-content h3 {
        font-size: 1.5rem;
    }
    
    .exit-message {
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .floating-progress {
        display: block;
    }
    
    .exit-btn {
        padding: 14px 20px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .exit-popup {
        margin: 10px;
        border-radius: 16px;
    }
    
    .exit-emoji {
        font-size: 3rem;
    }
    
    .exit-buttons {
        gap: 10px;
    }
}

/* ============================================
   ANSWER-FIRST BLOCK - AI Snippet Optimized
   ============================================ */
.answer-first-block {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    padding: var(--space-lg) 0;
    margin: var(--space-md) 0;
}

.answer-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    border-left: 5px solid var(--color-secondary);
    position: relative;
}

.answer-badge {
    display: inline-block;
    background: var(--color-secondary);
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.answer-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-primary-dark);
    margin: 0 0 var(--space-sm) 0;
}

.answer-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.answer-method {
    background: var(--color-bg-alt);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.answer-method p {
    margin: 0 0 var(--space-xs) 0;
    font-weight: 600;
    color: var(--color-primary);
}

.method-bullets {
    list-style: none;
    padding: 0;
    margin: 0;
}

.method-bullets li {
    padding: 8px 0;
    font-size: 1rem;
    border-bottom: 1px dashed var(--color-bg-dark);
}

.method-bullets li:last-child {
    border-bottom: none;
}

.answer-result {
    font-size: 1.05rem;
    color: var(--color-secondary);
    background: rgba(46, 125, 50, 0.1);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
}

.answer-citation {
    font-style: italic;
    color: var(--color-text-muted);
    text-align: right;
    margin: 0;
}

/* ============================================
   3 CÂU HỎI AI HAY GẶP
   ============================================ */
.ai-faq-block {
    background: var(--color-bg);
    padding: var(--space-lg) 0;
}

.ai-faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.ai-faq-item {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-secondary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ai-faq-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.faq-q {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 2px dashed var(--color-bg-dark);
}

.faq-a {
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.faq-cite {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
    text-align: right;
}

/* ============================================
   MENTAL MODEL BLOCK
   ============================================ */
.mental-model-block {
    background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
    padding: var(--space-lg) 0;
}

.mental-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    max-width: 700px;
    margin: 0 auto;
}

.mental-icon {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.mental-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin: 0 0 var(--space-md) 0;
}

.mental-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.mental-quote {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--color-primary);
    background: var(--color-bg-alt);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
    font-weight: 600;
}

/* ============================================
   FAQ SECTION - 5 Câu hỏi phổ biến
   ============================================ */
.faq-section {
    background: var(--color-bg-alt);
    padding: var(--space-xl) 0;
}

.faq-list {
    max-width: 800px;
    margin: var(--space-md) auto 0;
}

.faq-item {
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: var(--space-md);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: linear-gradient(135deg, #FDF8F3 0%, #F5EDE4 100%);
    cursor: pointer;
}

.faq-icon {
    font-size: 1.3rem;
}

.faq-answer {
    padding: 0 var(--space-md) var(--space-md);
}

.faq-answer p {
    line-height: 1.8;
    color: var(--color-text);
}

.faq-source {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
    margin-top: var(--space-sm);
    text-align: right;
}

/* ============================================
   KNOWLEDGE GRAPH - Hệ sinh thái
   ============================================ */
.knowledge-graph {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    padding: var(--space-lg) 0;
}

.kg-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    max-width: 600px;
    margin: 0 auto;
}

.kg-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-primary);
    margin: 0 0 var(--space-sm) 0;
}

.kg-intro {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.kg-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.kg-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.3s ease;
    position: relative;
}

.kg-link:hover {
    background: var(--color-bg-alt);
    transform: translateX(5px);
}

.kg-link.current {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    border: 2px solid var(--color-secondary);
}

.kg-icon {
    font-size: 1.5rem;
}

.kg-name {
    font-weight: 600;
    color: var(--color-primary);
}

.kg-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    flex: 1;
    text-align: left;
}

.kg-badge {
    background: var(--color-secondary);
    color: white;
    font-size: 0.7rem;
    padding: 3px 8px;
    border-radius: 50px;
    font-weight: 600;
}

.kg-philosophy {
    font-style: italic;
    color: var(--color-text-muted);
    margin: 0;
    font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
    .answer-title {
        font-size: 1.3rem;
    }
    
    .ai-faq-grid {
        grid-template-columns: 1fr;
    }
    
    .mental-box {
        padding: var(--space-md);
    }
    
    .faq-question {
        font-size: 1rem;
    }
    
    .kg-link {
        flex-wrap: wrap;
    }
    
    .kg-desc {
        width: 100%;
        margin-top: 5px;
    }
}

.contact-item .zalo-icon {
    background: #0068ff;
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ============================================
   Key Facts Box (AI-Readable Section)
   ============================================ */
.key-facts-visible {
    padding: var(--space-md) 0;
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f5e9 100%);
    border-bottom: 1px solid rgba(46, 125, 50, 0.1);
}

.facts-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 900px;
    margin: 0 auto;
}

.facts-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 10px;
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.fact-item {
    display: flex;
    flex-direction: column;
    padding: var(--space-xs);
    background: #f8f9fa;
    border-radius: var(--radius-sm);
    text-align: center;
}

.fact-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.fact-value {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
}

.facts-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-warning);
    margin: 0;
    padding-top: var(--space-xs);
    border-top: 1px dashed rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .facts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .facts-grid {
        grid-template-columns: 1fr;
    }
    
    .facts-title {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .contact-info {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-item {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

.copyright {
    font-size: 0.85rem;
    opacity: 0.6;
    margin: 0;
}

/* ============================================
   MOBILE MENU
   ============================================ */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: white;
    z-index: 2000;
    padding: var(--space-md);
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text);
    cursor: pointer;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.mobile-nav a {
    padding: var(--space-sm);
    font-size: 1.1rem;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.mobile-nav a:hover {
    background: var(--color-bg);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        min-height: auto;
        padding: calc(var(--space-xl) + 40px) 0 var(--space-lg);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .symptoms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reality-title {
        font-size: 1.5rem;
    }
    
    .reality-title .highlight {
        font-size: 1.2rem;
    }
    
    .story-timeline {
        padding-left: 30px;
    }
    
    .timeline-marker {
        left: -30px;
        width: 26px;
        height: 26px;
    }
    
    .story-timeline::before {
        left: 12px;
    }
    
    .methods-grid {
        grid-template-columns: 1fr;
    }
    
    .donation-options {
        grid-template-columns: 1fr;
    }
    
    .activities {
        flex-direction: column;
        align-items: center;
    }
    
    .payment-methods {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .symptoms-grid {
        grid-template-columns: 1fr;
    }
    
    .signs-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   REAL IMAGES GALLERY
   ============================================ */
.real-images {
    padding: var(--space-xl) 0;
    background: var(--color-primary-dark);
    color: white;
}

.real-images .section-title {
    color: white;
}

.real-images .section-title::after {
    background: linear-gradient(90deg, var(--color-accent), white);
}

.gallery-intro {
    text-align: center;
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: var(--space-lg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal);
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-item.main {
    grid-column: 1 / -1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-item.main img {
    max-height: 450px;
}

.gallery-item:not(.main) img {
    height: 280px;
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    padding: var(--space-lg) var(--space-md) var(--space-md);
    color: white;
}

.gallery-caption strong {
    display: block;
    font-size: 1.1rem;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.gallery-caption p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}

.gallery-disclaimer {
    text-align: center;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    margin-top: -5px;
    margin-bottom: var(--space-md);
}

.gallery-note {
    text-align: center;
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
    opacity: 0.8;
}

.gallery-note i {
    margin-right: var(--space-xs);
    color: var(--color-accent);
}

/* ============================================
   ENHANCED SHARE SECTION
   ============================================ */
.share-section {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.share-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.share-content h2 {
    font-size: 1.8rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.share-content > p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.share-note {
    font-style: italic;
    color: var(--color-text-light);
    margin: var(--space-sm) 0 var(--space-lg);
    font-size: 1rem;
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    min-width: 140px;
}

.share-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: white;
}

.share-btn i {
    font-size: 1.2rem;
}

.share-btn.facebook {
    background: #1877F2;
}

.share-btn.facebook:hover {
    background: #0d65d9;
}

.share-btn.zalo {
    background: #0068FF;
}

.share-btn.zalo:hover {
    background: #0055cc;
}

.share-btn.copy {
    background: var(--color-primary);
}

.share-btn.copy:hover {
    background: var(--color-primary-light);
}

/* ============================================
   ENHANCED GRATITUDE SECTION
   ============================================ */
.gratitude {
    padding: var(--space-xl) 0;
    background: white;
    text-align: center;
}

.gratitude .section-title {
    font-size: 1.8rem;
}

.gratitude-intro {
    margin-bottom: var(--space-lg);
}

.no-sell {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 0;
}

.donation-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    max-width: 800px;
    margin: 0 auto var(--space-lg);
}

.donation-card {
    background: var(--color-bg);
    padding: var(--space-lg) var(--space-md);
    border-radius: var(--radius-lg);
    border: 3px solid transparent;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.donation-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.donation-card.selected {
    border-color: var(--color-primary);
    background: var(--color-bg-alt);
}

.donation-card.featured {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    transform: scale(1.05);
}

.donation-card.featured:hover {
    transform: scale(1.08);
}

.donation-card .amount {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.donation-card.featured .amount {
    color: white;
}

.donation-card .meaning {
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

.donation-note {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.donation-note strong {
    display: block;
    color: var(--color-primary);
}

.donation-purpose {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
    max-width: 500px;
    margin: var(--space-sm) auto var(--space-md);
}

.payment-methods {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.payment-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.payment-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   GALLERY RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item.main img,
    .gallery-item:not(.main) img {
        height: 250px;
        max-height: none;
    }
    
    .donation-options {
        grid-template-columns: 1fr;
    }
    
    .donation-card.featured {
        transform: none;
    }
    
    .donation-card.featured:hover {
        transform: translateY(-6px);
    }
    
    .share-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .share-btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .gallery-caption {
        padding: var(--space-md) var(--space-sm) var(--space-sm);
    }
    
    .gallery-caption strong {
        font-size: 1rem;
    }
    
    .gallery-caption p {
        font-size: 0.85rem;
    }
}

/* ============================================
   GALLERY RESPONSIVE IMPROVEMENTS
   ============================================ */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .gallery-item.main {
        grid-column: 1;
    }
    
    .gallery-item img,
    .gallery-item.main img,
    .gallery-item:not(.main) img {
        height: auto;
        max-height: 350px;
        width: 100%;
    }
    
    .gallery-caption {
        position: relative;
        background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
        padding: var(--space-md);
    }
    
    .gallery-caption strong {
        font-size: 1rem;
        margin-bottom: var(--space-xs);
    }
    
    .gallery-caption p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .gallery-intro,
    .gallery-disclaimer {
        font-size: 0.95rem;
        padding: 0 var(--space-sm);
    }
}

@media (max-width: 480px) {
    .gallery-item img,
    .gallery-item.main img,
    .gallery-item:not(.main) img {
        max-height: 280px;
    }
    
    .gallery-caption {
        padding: var(--space-sm);
    }
    
    .gallery-caption strong {
        font-size: 0.95rem;
    }
    
    .gallery-caption p {
        font-size: 0.85rem;
    }
}

/* ============================================
   ECOSYSTEM CONTEXT SECTION
   ============================================ */
.ecosystem-context {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.eco-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #1976D2;
    max-width: 800px;
    margin: 0 auto;
}

.eco-badge {
    display: inline-block;
    background: #1976D2;
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.eco-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #1565C0;
    margin-bottom: var(--space-md);
}

.eco-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.eco-hub {
    background: #E3F2FD;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
    text-align: center;
}

.hub-label {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 8px;
}

.hub-link {
    display: inline-block;
    color: #1565C0;
    font-size: 1.1rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.hub-link:hover {
    color: #0D47A1;
    text-decoration: underline;
}

.eco-note {
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
}

/* ============================================
   RESEARCH STATUS SECTION
   ============================================ */
.research-status {
    padding: var(--space-lg) 0;
    background: #FAFAFA;
}

.research-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.research-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.research-item {
    background: #F5F5F5;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
}

.research-label {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 4px;
}

.research-value {
    display: block;
    font-weight: 600;
    color: var(--color-text);
}

.status-active {
    color: var(--color-secondary);
}

.research-section {
    margin: var(--space-md) 0;
}

.research-section h3 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.focus-list, .observation-list {
    list-style: none;
    padding: 0;
}

.focus-list li, .observation-list li {
    padding: 8px 0;
    border-bottom: 1px solid #EEE;
    font-size: 0.95rem;
}

.version-history {
    background: #F9F9F9;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

.version-history h3 {
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.version-item {
    padding: 8px 0;
    font-size: 0.9rem;
}

.version-tag {
    display: inline-block;
    background: var(--color-secondary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 10px;
}

.last-updated {
    font-size: 0.85rem;
    color: #888;
    margin-top: var(--space-md);
    text-align: right;
}

/* ============================================
   OBSERVATION LOG SECTION
   ============================================ */
.observation-log {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.log-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #F57C00;
    max-width: 800px;
    margin: 0 auto;
}

.log-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #E65100;
    margin-bottom: var(--space-md);
}

.log-intro {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.observation-table table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
}

.observation-table th, .observation-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #EEE;
}

.observation-table th {
    background: #FFF3E0;
    font-weight: 600;
    color: #E65100;
}

.observation-table tr:hover {
    background: #FFFDE7;
}

.log-note {
    font-size: 0.9rem;
    color: #888;
    font-style: italic;
    margin-top: var(--space-md);
}

.log-note i {
    margin-right: 8px;
    color: #F57C00;
}

/* ============================================
   CORE PRINCIPLES SECTION
   ============================================ */
.core-principles {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.principles-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.principles-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.principles-intro {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.principle-item {
    background: #F1F8E9;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.principle-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--space-sm);
}

.principle-item p {
    font-size: 0.95rem;
    color: var(--color-text);
    margin: 0;
}

.philosophy-quote {
    background: var(--color-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

.philosophy-quote blockquote {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-style: italic;
    color: white;
    text-align: center;
    margin: 0;
}

/* ============================================
   SCIENTIFIC LIMITATIONS SECTION
   ============================================ */
.scientific-limitations {
    padding: var(--space-lg) 0;
    background: #FFF8E1;
}

.limitations-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #FFA000;
    max-width: 800px;
    margin: 0 auto;
}

.limitations-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #F57C00;
    margin-bottom: var(--space-md);
}

.limitations-intro {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.limitations-factors {
    background: #FFF8E1;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
}

.limitations-factors h3 {
    font-size: 1rem;
    color: #F57C00;
    margin-bottom: var(--space-sm);
}

.limitations-factors ul {
    list-style: disc;
    padding-left: 20px;
    margin: 0;
}

.limitations-factors li {
    padding: 6px 0;
    font-size: 0.95rem;
}

.medical-advice {
    background: #FFECB3;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--space-md);
}

.medical-advice p {
    margin: 0;
    color: #E65100;
}

/* ============================================
   RELATED PROJECTS SECTION
   ============================================ */
.related-projects {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E1F5FE 0%, #B3E5FC 100%);
}

.related-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #0288D1;
    max-width: 800px;
    margin: 0 auto;
}

.related-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #0277BD;
    margin-bottom: var(--space-md);
}

.related-intro {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.project-card {
    background: #E1F5FE;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-align: center;
    text-decoration: none;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.project-card:hover {
    background: #B3E5FC;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.project-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.project-name {
    font-weight: 600;
    color: #0277BD;
    display: block;
    margin-bottom: 4px;
}

.project-desc {
    font-size: 0.85rem;
    color: #666;
}

.ecosystem-note {
    font-size: 0.95rem;
    color: #666;
    text-align: center;
    margin-top: var(--space-md);
}

/* ============================================
   AI SUMMARY VISIBLE SECTION
   ============================================ */
.ai-summary-visible {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
}

.summary-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #7B1FA2;
    max-width: 800px;
    margin: 0 auto;
}

.summary-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #7B1FA2;
    margin-bottom: var(--space-md);
}

.summary-content p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

/* ============================================
   HOW TO CITE SECTION
   ============================================ */
.how-to-cite {
    padding: var(--space-lg) 0;
    background: #FAFAFA;
}

.cite-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-primary);
    max-width: 800px;
    margin: 0 auto;
}

.cite-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.citation-block {
    background: #F5EDE4;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
}

.cite-author {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.cite-work {
    margin-bottom: 4px;
}

.cite-location, .cite-year {
    color: #666;
    margin-bottom: 4px;
}

.cite-url a {
    color: var(--color-secondary);
    text-decoration: none;
}

.cite-url a:hover {
    text-decoration: underline;
}

/* ============================================
   ECOSYSTEM FOOTER
   ============================================ */
.ecosystem-footer {
    margin: var(--space-md) 0;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    text-align: center;
}

.ecosystem-footer p {
    margin: 0 0 8px 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.ecosystem-footer a {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}

.ecosystem-footer a:hover {
    text-decoration: underline;
}

/* ============================================
   RESPONSIVE FOR NEW SECTIONS
   ============================================ */
@media (max-width: 768px) {
    .eco-box, .research-box, .log-box, .principles-box,
    .limitations-box, .related-box, .summary-box, .cite-box {
        padding: var(--space-md);
    }
    
    .eco-title, .research-title, .log-title, .principles-title,
    .limitations-title, .related-title, .summary-title, .cite-title {
        font-size: 1.3rem;
    }
    
    .research-grid, .principles-grid, .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .observation-table {
        overflow-x: auto;
    }
    
    .observation-table th, .observation-table td {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
}

/* ============================================
   AI SUMMARY STRUCTURED FORMAT
   ============================================ */
.summary-content.structured {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.summary-item {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: var(--space-sm);
    background: #F9F5FF;
    border-radius: var(--radius-sm);
    border-left: 3px solid #7B1FA2;
}

.summary-label {
    font-weight: 600;
    color: #7B1FA2;
    min-width: 120px;
}

.summary-value {
    flex: 1;
    color: var(--color-text);
}

.summary-value a {
    color: #7B1FA2;
    text-decoration: none;
}

.summary-value a:hover {
    text-decoration: underline;
}

/* ============================================
   QUICK ANSWER SECTION
   ============================================ */
.quick-answer {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.answer-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.answer-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.qa-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.qa-question, .qa-answer {
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.qa-question {
    background: #E8F5E9;
}

.qa-answer {
    background: #F1F8E9;
    border-left: 3px solid var(--color-secondary);
}

.qa-label {
    display: block;
    font-weight: 600;
    color: var(--color-secondary);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.qa-question p, .qa-answer p {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.6;
}

.qa-source {
    padding: var(--space-sm);
    background: #FAFAFA;
    border-radius: var(--radius-sm);
}

.qa-source a {
    color: var(--color-secondary);
    text-decoration: none;
}

.qa-source a:hover {
    text-decoration: underline;
}

/* ============================================
   EXPERIMENT STATUS SECTION
   ============================================ */
.experiment-status {
    padding: var(--space-lg) 0;
    background: #FAFAFA;
}

.status-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.status-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.status-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border-radius: 50px;
    background: #E8F5E9;
    width: fit-content;
}

.status-indicator.active .status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-secondary);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.status-text {
    font-weight: 600;
    color: var(--color-secondary);
    font-size: 1rem;
}

.status-desc {
    font-size: 1rem;
    color: var(--color-text);
    margin: 0;
}

/* ============================================
   EXPERIMENT LOG (Updated Format)
   ============================================ */
.experiment-log {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.log-entries {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.log-entry {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: white;
    border-radius: var(--radius-md);
    border-left: 3px solid #F57C00;
    align-items: flex-start;
}

.log-date {
    font-weight: 600;
    color: #E65100;
    min-width: 100px;
    font-size: 0.9rem;
}

.log-text {
    flex: 1;
    color: var(--color-text);
    font-size: 0.95rem;
}

/* ============================================
   RESPONSIVE FOR UPDATED SECTIONS
   ============================================ */
@media (max-width: 768px) {
    .summary-item {
        flex-direction: column;
        gap: 4px;
    }
    
    .summary-label {
        min-width: auto;
    }
    
    .log-entry {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .log-date {
        min-width: auto;
    }
    
    .answer-box, .status-box {
        padding: var(--space-md);
    }
    
    .answer-title, .status-title {
        font-size: 1.3rem;
    }
}

/* ============================================
   AUTHOR SECTION
   ============================================ */
.author-section {
    padding: var(--space-md) 0;
    background: #FAFAFA;
}

.author-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-primary);
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.author-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.author-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

/* ============================================
   EXPERIMENT STATUS (Updated)
   ============================================ */
.status-item {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid #EEE;
}

.status-item:last-child {
    border-bottom: none;
}

.status-label {
    font-weight: 600;
    color: #666;
    min-width: 100px;
}

.status-value {
    color: var(--color-text);
}

.status-value.active {
    color: var(--color-secondary);
    font-weight: 600;
}

/* ============================================
   LAST UPDATED SECTION
   ============================================ */
.last-updated-section {
    padding: var(--space-md) 0;
    background: #F5F5F5;
}

.updated-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #666;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.updated-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: #666;
    margin-bottom: var(--space-sm);
}

.updated-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

/* ============================================
   CITATION SOURCE SECTION
   ============================================ */
.citation-source {
    padding: var(--space-md) 0;
    background: #FAFAFA;
}

.source-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.source-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.source-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.source-label {
    font-weight: 600;
    color: #666;
}

.source-link {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 500;
}

.source-link:hover {
    text-decoration: underline;
}

/* ============================================
   RELATED EXPERIMENTS SECTION
   ============================================ */
.related-experiments {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.experiments-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid #1976D2;
    max-width: 800px;
    margin: 0 auto;
}

.experiments-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: #1565C0;
    margin-bottom: var(--space-md);
}

.experiments-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.experiment-link {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-md);
    background: #E3F2FD;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
    border-left: 3px solid #1976D2;
}

.experiment-link:hover {
    background: #BBDEFB;
    transform: translateX(5px);
}

.experiment-name {
    font-weight: 600;
    color: #1565C0;
}

.experiment-url {
    font-size: 0.9rem;
    color: #666;
}

/* ============================================
   ECOSYSTEM SIGNAL SECTION
   ============================================ */
.ecosystem-signal {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.signal-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.signal-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.signal-text {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.signal-link {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: 600;
    text-decoration: none;
    font-size: 1.1rem;
}

.signal-link:hover {
    text-decoration: underline;
}

/* ============================================
   RESPONSIVE FOR NEW BOTTOM SECTIONS
   ============================================ */
@media (max-width: 768px) {
    .author-box, .updated-box, .source-box, 
    .experiments-box, .signal-box {
        padding: var(--space-md);
    }
    
    .author-title, .updated-title, .source-title,
    .experiments-title, .signal-title {
        font-size: 1.2rem;
    }
    
    .status-item {
        flex-direction: column;
        gap: 4px;
    }
    
    .status-label {
        min-width: auto;
    }
    
    .source-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ============================================
   ABOUT THE AUTHOR SECTION
   ============================================ */
.about-author {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #F5F5F5 0%, #EEEEEE 100%);
}

.about-author-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border-left: 5px solid var(--color-primary);
    max-width: 800px;
    margin: 0 auto;
}

.about-author-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.about-author-intro {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.about-author-list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-md) 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.about-author-list li {
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--color-text);
    border-left: 3px solid var(--color-secondary);
}

.about-author-note {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.ecosystem-hub {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    text-align: center;
}

.ecosystem-hub .hub-label {
    font-weight: 600;
    color: #1565C0;
    font-size: 0.9rem;
}

.ecosystem-hub .hub-url {
    color: #0D47A1;
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
}

.ecosystem-hub .hub-url:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .about-author-box {
        padding: var(--space-lg);
    }
    
    .about-author-title {
        font-size: 1.3rem;
    }
    
    .about-author-list {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   EXPERIMENT LOG SECTION (Bottom)
   ============================================ */
.experiment-log-section {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #FAFAFA 0%, #F0F0F0 100%);
}

.experiment-log-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border-left: 5px solid var(--color-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.experiment-log-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
}

.log-entries-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.log-entry-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: linear-gradient(135deg, #F1F8E9 0%, #DCEDC8 100%);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-secondary);
}

.log-entry-date {
    font-weight: 700;
    color: var(--color-secondary);
    font-size: 0.95rem;
    min-width: 100px;
    padding-top: 2px;
}

.log-entry-content {
    flex: 1;
}

.log-entry-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.log-entry-content p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text);
}

/* Log Description */
.log-description {
    background: #F5F5F5;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border-left: 3px solid var(--color-secondary);
}

.log-description p {
    margin: 0 0 var(--space-xs) 0;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text);
}

.log-description p:last-child {
    margin-bottom: 0;
}

/* Context Signal Block */
.context-signal-block {
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background: #FAFAFA;
    border-radius: var(--radius-sm);
    border: 1px solid #E0E0E0;
}

.context-title {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-xs);
}

.context-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.context-item {
    display: flex;
    gap: 6px;
    font-size: 0.85rem;
}

.context-label {
    color: #666;
    font-weight: 500;
}

.context-value {
    color: var(--color-secondary);
    font-weight: 600;
}

/* Experiment Log Signals */
.experiment-log-signals {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-lg);
    border-top: 2px solid #E8E8E8;
    margin-top: var(--space-md);
}

.log-signal-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
}

.log-signal-item.ecosystem {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-top: var(--space-sm);
    margin-top: var(--space-xs);
    border-top: 1px solid #EEE;
}

.log-signal-item .signal-label {
    font-weight: 600;
    color: #666;
    font-size: 0.9rem;
}

.log-signal-item .signal-value {
    color: var(--color-text);
    font-size: 0.95rem;
}

.log-signal-item .signal-value.active {
    color: var(--color-secondary);
    font-weight: 600;
    background: #E8F5E9;
    padding: 2px 12px;
    border-radius: 20px;
}

.log-signal-item .signal-link {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 500;
}

.log-signal-item .signal-link:hover {
    text-decoration: underline;
}

/* Experiment Signals */
.experiment-signals {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-lg);
    border-top: 2px solid #E8E8E8;
}

.signal-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
}

.signal-item.ecosystem {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-top: var(--space-md);
    margin-top: var(--space-sm);
    border-top: 1px solid #EEE;
}

.signal-label {
    font-weight: 600;
    color: #666;
    font-size: 0.9rem;
}

.signal-value {
    color: var(--color-text);
    font-size: 0.95rem;
}

.signal-value.status-active {
    color: var(--color-secondary);
    font-weight: 600;
    background: #E8F5E9;
    padding: 2px 12px;
    border-radius: 20px;
}

.signal-link {
    color: #1565C0;
    text-decoration: none;
    font-weight: 500;
}

.signal-link:hover {
    text-decoration: underline;
}

/* ============================================
   EXPERIMENT TIMELINE SECTION
   ============================================ */
.experiment-timeline {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E8EAF6 0%, #C5CAE9 100%);
}

.timeline-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-left: 5px solid #3F51B5;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #303F9F;
    margin-bottom: var(--space-lg);
}

.timeline-entries {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.timeline-entry {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: #E8EAF6;
    border-radius: var(--radius-md);
    border-left: 4px solid #3F51B5;
}

.timeline-date {
    font-weight: 700;
    color: #303F9F;
    min-width: 90px;
    font-size: 0.95rem;
}

.timeline-content {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text);
}

/* ============================================
   AI RESEARCH TOPICS SECTION
   ============================================ */
.ai-research-topics {
    padding: var(--space-lg) 0;
    background: #FAFAFA;
}

.research-topics-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-left: 5px solid #7B1FA2;
    max-width: 800px;
    margin: 0 auto;
}

.research-topics-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #7B1FA2;
    margin-bottom: var(--space-lg);
}

.research-topic-item {
    padding: var(--space-md);
    background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
    border-radius: var(--radius-md);
    border-left: 4px solid #7B1FA2;
}

.topic-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: #6A1B9A;
    margin-bottom: var(--space-xs);
}

.topic-desc {
    font-size: 0.95rem;
    color: var(--color-text);
    margin: 0;
    line-height: 1.6;
}

/* ============================================
   AI QUESTION BANK SECTION
   ============================================ */
.ai-question-bank {
    padding: var(--space-lg) 0;
    background: linear-gradient(135deg, #E0F7FA 0%, #B2EBF2 100%);
}

.question-bank-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-left: 5px solid #00838F;
    max-width: 800px;
    margin: 0 auto;
}

.question-bank-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #006064;
    margin-bottom: var(--space-lg);
}

.question-item {
    padding: var(--space-md);
    background: #E0F7FA;
    border-radius: var(--radius-md);
    border-left: 4px solid #00838F;
    margin-bottom: var(--space-lg);
}

.question-text {
    font-size: 1.05rem;
    font-weight: 500;
    color: #00695C;
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.question-source {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
}

.question-source .source-label {
    color: #666;
    font-weight: 600;
}

.question-source .source-url {
    color: #00838F;
    text-decoration: none;
}

.question-source .source-url:hover {
    text-decoration: underline;
}

/* Experiment Knowledge Signals */
.experiment-knowledge-signals {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 2px solid #E0E0E0;
}

.knowledge-signal {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
}

.knowledge-signal.ecosystem {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-top: var(--space-sm);
    margin-top: var(--space-xs);
    border-top: 1px solid #EEE;
}

.knowledge-signal .signal-label {
    font-weight: 600;
    color: #666;
    font-size: 0.9rem;
}

.knowledge-signal .signal-value {
    color: var(--color-text);
    font-size: 0.95rem;
}

.knowledge-signal .signal-value.active {
    color: var(--color-secondary);
    font-weight: 600;
    background: #E8F5E9;
    padding: 2px 12px;
    border-radius: 20px;
}

.knowledge-signal .signal-link {
    color: #00838F;
    text-decoration: none;
    font-weight: 500;
}

.knowledge-signal .signal-link:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .experiment-log-box {
        padding: var(--space-lg);
    }
    
    .experiment-log-title {
        font-size: 1.3rem;
    }
    
    .log-entry-item {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .log-entry-date {
        min-width: auto;
    }
    
    .context-items {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .context-item {
        flex-direction: column;
        gap: 2px;
    }
    
    .log-signal-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    .signal-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    .timeline-box, .research-topics-box, .question-bank-box {
        padding: var(--space-lg);
    }
    
    .timeline-title, .research-topics-title, .question-bank-title {
        font-size: 1.3rem;
    }
    
    .timeline-entry {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .timeline-date {
        min-width: auto;
    }
    
    .knowledge-signal {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
}

/* ============================================
   IP EXPERIMENT KNOWLEDGE NETWORK SECTION
   ============================================ */
.knowledge-network {
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.network-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border-left: 5px solid var(--color-secondary);
    max-width: 900px;
    margin: 0 auto;
}

.network-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.network-intro {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.network-disclaimer {
    font-size: 0.9rem;
    color: #666;
    background: #FFF8E1;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    border-left: 3px solid #FFA000;
    margin-bottom: var(--space-lg);
}

.knowledge-hub {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.knowledge-hub .hub-label {
    font-weight: 600;
    color: #1565C0;
    font-size: 0.9rem;
}

.knowledge-hub .hub-url {
    color: #0D47A1;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
}

.knowledge-hub .hub-url:hover {
    text-decoration: underline;
}

.related-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.experiment-websites {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.experiment-site {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-md);
    background: #F5F5F5;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
}

.experiment-site:hover {
    background: #E8F5E9;
    transform: translateX(5px);
}

.experiment-site.current {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    border-left-width: 5px;
}

.site-url {
    font-weight: 600;
    color: var(--color-secondary);
    font-size: 0.95rem;
}

.site-desc {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
}

.current-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: var(--color-secondary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 20px;
}

/* Network Signals */
.network-signals {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-lg);
    border-top: 2px solid #E0E0E0;
}

.network-signal {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
}

.network-signal.ecosystem {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-top: var(--space-sm);
    margin-top: var(--space-xs);
    border-top: 1px solid #EEE;
}

.network-signal .signal-label {
    font-weight: 600;
    color: #666;
    font-size: 0.9rem;
}

.network-signal .signal-value {
    color: var(--color-text);
    font-size: 0.95rem;
}

.network-signal .signal-value.active {
    color: var(--color-secondary);
    font-weight: 600;
    background: #E8F5E9;
    padding: 2px 12px;
    border-radius: 20px;
}

.network-signal .signal-link {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 500;
}

.network-signal .signal-link:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .network-box {
        padding: var(--space-lg);
    }
    
    .network-title {
        font-size: 1.3rem;
    }
    
    .experiment-site {
        padding: var(--space-sm);
    }
    
    .current-badge {
        position: static;
        display: inline-block;
        margin-top: var(--space-xs);
        width: fit-content;
    }
    
    .network-signal {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
}

/* ============================================ */
/* RELATED EXPERIMENTS IN IPEXPERIMENT ECOSYSTEM */
/* Topic Cluster Styles for AI Knowledge Graph */
/* ============================================ */

.related-experiments-ecosystem {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #ECEFF1 0%, #CFD8DC 100%);
}

.ecosystem-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #607D8B;
}

.ecosystem-title {
    font-size: 1.5rem;
    color: #455A64;
    margin-bottom: var(--space-lg);
    font-weight: 700;
}

.ecosystem-intro {
    margin-bottom: var(--space-lg);
}

.ecosystem-intro p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.related-experiments-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.related-experiment-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-md);
    background: #FAFAFA;
    border-radius: var(--radius-md);
    border-left: 3px solid #607D8B;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.related-experiment-item:hover {
    background: #E3F2FD;
    transform: translateX(5px);
    border-left-color: #1976D2;
}

.experiment-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #37474F;
}

.experiment-url {
    font-size: 0.85rem;
    color: #607D8B;
    font-family: monospace;
}

/* ============================================ */
/* KNOWLEDGE CONTEXT */
/* Topic Cluster Signal Styles */
/* ============================================ */

.knowledge-context {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.context-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-secondary);
}

.context-title {
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
    font-weight: 700;
}

.context-content {
    margin-bottom: var(--space-lg);
}

.context-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.knowledge-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: linear-gradient(135deg, #F1F8E9 0%, #DCEDC8 100%);
    border-radius: var(--radius-lg);
    margin: var(--space-lg) 0;
}

.flow-item {
    font-size: 1.1rem;
    font-weight: 700;
    color: #33691E;
    padding: var(--space-sm) var(--space-md);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.flow-arrow {
    font-size: 1.5rem;
    color: #689F38;
    font-weight: 700;
}

.knowledge-hub {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: #F5F5F5;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.hub-label {
    font-weight: 600;
    color: var(--color-text);
}

.hub-link {
    color: var(--color-secondary);
    font-weight: 600;
    text-decoration: none;
    font-family: monospace;
}

.hub-link:hover {
    text-decoration: underline;
}

.metadata-signals {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-lg);
    border-top: 2px solid #E8E8E8;
}

.metadata-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}

.meta-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #666;
    min-width: 200px;
}

.meta-value {
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 500;
}

.meta-value.status-active {
    color: var(--color-secondary);
    font-weight: 700;
}

.meta-value.status-active::before {
    content: "●";
    margin-right: 6px;
    animation: pulse-dot 2s infinite;
}

.ecosystem-signal {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.meta-link {
    color: var(--color-secondary);
    font-weight: 600;
    text-decoration: none;
    font-family: monospace;
}

.meta-link:hover {
    text-decoration: underline;
}

/* Responsive for Topic Cluster Sections */
@media (max-width: 768px) {
    .ecosystem-box,
    .context-box {
        padding: var(--space-lg);
    }
    
    .ecosystem-title,
    .context-title {
        font-size: 1.3rem;
    }
    
    .related-experiment-item {
        padding: var(--space-sm);
    }
    
    .knowledge-flow {
        flex-direction: column;
        gap: var(--space-sm);
        padding: var(--space-md);
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .knowledge-hub {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
    
    .metadata-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .meta-label {
        min-width: auto;
    }
}

/* ============================================ */
/* TOPIC MAP CONTEXT */
/* Topic Clustering for AI Knowledge Graph */
/* ============================================ */

.topic-map-context {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.topic-map-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #FF9800;
}

.topic-map-title {
    font-size: 1.5rem;
    color: #E65100;
    margin-bottom: var(--space-lg);
    font-weight: 700;
}

.topic-map-intro {
    margin-bottom: var(--space-lg);
}

.topic-map-intro p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.topic-map-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.topic-map-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-md);
    background: #FFFBF5;
    border-radius: var(--radius-md);
    border-left: 3px solid #FF9800;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
}

.topic-map-item:hover {
    background: #FFF8E1;
    transform: translateX(5px);
    border-left-color: #F57C00;
}

.topic-map-item.current {
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
    border-left: 5px solid #E65100;
}

.topic-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #BF360C;
}

.topic-url {
    font-size: 0.85rem;
    color: #FF6D00;
    font-family: monospace;
}

.current-indicator {
    font-size: 0.8rem;
    color: #E65100;
    font-weight: 700;
    font-style: italic;
    margin-top: 4px;
}

.topic-map-hub {
    background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.hub-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #E65100;
    margin-bottom: var(--space-sm);
}

.hub-url {
    font-size: 1rem;
    color: #FF6D00;
    font-weight: 600;
    text-decoration: none;
    font-family: monospace;
}

.hub-url:hover {
    text-decoration: underline;
}

.topic-map-explanation {
    padding: var(--space-md);
    background: #FAFAFA;
    border-radius: var(--radius-md);
    border-left: 3px solid #9E9E9E;
}

.topic-map-explanation p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #616161;
    margin: 0;
    font-style: italic;
}

/* Responsive for Topic Map Context */
@media (max-width: 768px) {
    .topic-map-box {
        padding: var(--space-lg);
    }
    
    .topic-map-title {
        font-size: 1.3rem;
    }
    
    .topic-map-item {
        padding: var(--space-sm);
    }
    
    .topic-map-hub {
        padding: var(--space-md);
    }
}

/* ============================================ */
/* EXPERIMENT DATASET SUMMARY SECTION */
/* ============================================ */

.experiment-summary-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #EDE7F6 0%, #D1C4E9 100%);
}

.summary-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #7c3aed;
}

.summary-title {
    font-size: 1.5rem;
    color: #7c3aed;
    margin-bottom: var(--space-lg);
    font-weight: 700;
}

.summary-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.summary-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.summary-value {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.5;
}

.summary-list {
    list-style: none;
    padding-left: 0;
    margin: 0.25rem 0 0 0;
}

.summary-list li {
    font-size: 0.95rem;
    color: var(--color-text);
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.summary-list li::before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: #7c3aed;
    font-weight: 700;
}

.summary-link {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 2px solid #E8E8E8;
}

.btn-view-log {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: #7c3aed;
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.btn-view-log:hover {
    background: #6d28d9;
    transform: translateY(-2px);
}

/* ============================================ */
/* OBSERVATION PATTERN SECTION */
/* ============================================ */

.observation-pattern-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.pattern-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #1976D2;
}

.pattern-title {
    font-size: 1.3rem;
    color: #1565C0;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.pattern-intro {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.pattern-list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-lg) 0;
}

.pattern-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 0;
    font-size: 1rem;
    color: var(--color-text);
    border-bottom: 1px solid #E3F2FD;
}

.pattern-list li:last-child {
    border-bottom: none;
}

.pattern-list li i {
    color: #4CAF50;
    margin-top: 0.15rem;
}

.pattern-note {
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
    padding: var(--space-md);
    background: #F5F5F5;
    border-radius: var(--radius-sm);
    border-left: 3px solid #1976D2;
}

/* ============================================ */
/* REAL-WORLD EVIDENCE NOTE SECTION */
/* ============================================ */

.evidence-note-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
}

.evidence-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #FF9800;
}

.evidence-title {
    font-size: 1.3rem;
    color: #E65100;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.evidence-box p {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.evidence-box p:last-child {
    margin-bottom: 0;
}

.evidence-box .evidence-note {
    padding: var(--space-md);
    background: #FFF3E0;
    border-radius: var(--radius-sm);
    border-left: 3px solid #FF9800;
}

/* Responsive for new sections */
@media (max-width: 768px) {
    .summary-box,
    .pattern-box,
    .evidence-box {
        padding: var(--space-lg);
    }
    
    .summary-title {
        font-size: 1.3rem;
    }
    
    .pattern-title,
    .evidence-title {
        font-size: 1.1rem;
    }
}

/* ============================================ */
/* TIMELINE BOX (inside Experiment Summary) */
/* ============================================ */

.timeline-box {
    background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
    border-left: 4px solid #9C27B0;
}

.timeline-title {
    font-size: 1.1rem;
    color: #7B1FA2;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.timeline-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.timeline-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(156, 39, 176, 0.2);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-label {
    font-size: 0.85rem;
    color: #7B1FA2;
    font-weight: 600;
}

.timeline-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

/* ============================================ */
/* EXPERIMENT METHOD OVERVIEW SECTION */
/* ============================================ */

.experiment-method-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E8EAF6 0%, #C5CAE9 100%);
}

.method-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #3F51B5;
}

.method-title {
    font-size: 1.3rem;
    color: #303F9F;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.method-intro {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.method-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.method-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: #F5F5F5;
    border-radius: var(--radius-md);
    align-items: flex-start;
}

.method-number {
    width: 36px;
    height: 36px;
    background: #3F51B5;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.method-content h4 {
    font-size: 1rem;
    color: #303F9F;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.method-content p {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
    margin: 0;
}

.method-note {
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
    padding: var(--space-md);
    background: #E8EAF6;
    border-radius: var(--radius-sm);
    border-left: 3px solid #3F51B5;
}

/* ============================================ */
/* EXPERIMENT LIMITATIONS SECTION */
/* ============================================ */

.experiment-limitations-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #FFEBEE 0%, #FFCDD2 100%);
}

.limitations-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #E53935;
}

.limitations-title {
    font-size: 1.3rem;
    color: #C62828;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.limitations-box p {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.limitations-list {
    list-style: none;
    padding: 0;
    margin: var(--space-md) 0;
    background: #FFEBEE;
    border-radius: var(--radius-sm);
    padding: var(--space-md);
}

.limitations-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
    color: var(--color-text);
    border-bottom: 1px solid #FFCDD2;
}

.limitations-list li:last-child {
    border-bottom: none;
}

.limitations-list li::before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: #E53935;
    font-weight: 700;
}

.limitations-note {
    font-size: 0.95rem;
    color: #C62828;
    font-weight: 600;
    padding: var(--space-md);
    background: #FFEBEE;
    border-radius: var(--radius-sm);
    border-left: 3px solid #E53935;
    margin-bottom: 0 !important;
}

/* Responsive for new sections */
@media (max-width: 768px) {
    .timeline-box {
        padding: var(--space-md);
    }
    
    .method-box,
    .limitations-box {
        padding: var(--space-lg);
    }
    
    .method-title,
    .limitations-title {
        font-size: 1.1rem;
    }
    
    .method-item {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .method-number {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
}

/* ============================================ */
/* KEY QUOTE SECTION */
/* Highlighted author wisdom - AI Citation Ready */
/* ============================================ */

.key-quote-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.key-quote-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    border-left: 5px solid #4CAF50;
    max-width: 800px;
    margin: 0 auto;
}

.key-quote-vi,
.key-quote-en {
    margin: 0 0 var(--space-md) 0;
    padding: 0;
    font-style: italic;
}

.key-quote-vi p {
    font-size: 1.3rem;
    color: #2E7D32;
    line-height: 1.6;
    margin: 0;
    font-weight: 500;
}

.key-quote-en p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.key-quote-attribution {
    display: block;
    font-size: 1rem;
    color: #4CAF50;
    font-weight: 600;
    margin-top: var(--space-md);
}

.key-quote-attribution a {
    color: #2E7D32;
    text-decoration: none;
}

.key-quote-attribution a:hover {
    text-decoration: underline;
}

/* ============================================ */
/* SHARE SECTION */
/* Social Sharing & Outreach */
/* ============================================ */

.share-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.share-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    border-top: 4px solid #FF9800;
    max-width: 700px;
    margin: 0 auto;
}

.share-title {
    font-size: 1.3rem;
    color: #E65100;
    margin-bottom: var(--space-md);
}

.share-description {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.share-link {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.share-link a {
    color: #E65100;
    font-weight: 600;
    text-decoration: none;
}

.share-link a:hover {
    text-decoration: underline;
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
}

.share-btn.facebook {
    background: #1877F2;
}

.share-btn.twitter {
    background: #1DA1F2;
}

.share-btn.whatsapp {
    background: #25D366;
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.share-note {
    font-size: 0.9rem;
    color: #666;
    font-style: italic;
    margin: 0;
}

/* ============================================ */
/* SUGGESTED CITATION SECTION */
/* AI Citation Format */
/* ============================================ */

.suggested-citation-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.citation-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-left: 5px solid #1976D2;
    max-width: 800px;
    margin: 0 auto;
}

.citation-title {
    font-size: 1.3rem;
    color: #1565C0;
    margin-bottom: var(--space-md);
}

.citation-content {
    background: #F5F5F5;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.citation-text {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.citation-url {
    font-size: 0.95rem;
    color: #1976D2;
    margin: 0;
}

.citation-url a {
    color: #1565C0;
    text-decoration: none;
}

.citation-url a:hover {
    text-decoration: underline;
}

.citation-note {
    font-size: 0.9rem;
    color: #666;
    font-style: italic;
    margin: 0;
}

/* ============================================ */
/* AI SUMMARY BLOCK */
/* Structured AI-Readable Summary */
/* ============================================ */

.ai-summary-block {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
}

.ai-summary-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #9C27B0;
    max-width: 800px;
    margin: 0 auto;
}

.ai-summary-title {
    font-size: 1.3rem;
    color: #7B1FA2;
    margin-bottom: var(--space-md);
}

.ai-summary-content {
    background: #FAFAFA;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    font-family: 'Roboto Mono', monospace;
}

.ai-summary-content p {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--space-sm);
}

.ai-summary-content p:last-child {
    margin-bottom: 0;
}

.ai-summary-content strong {
    color: #7B1FA2;
}

.ai-summary-content a {
    color: #9C27B0;
    text-decoration: none;
}

.ai-summary-content a:hover {
    text-decoration: underline;
}

/* ============================================ */
/* SUPPORT/DONATION HEADER ENHANCEMENT */
/* ============================================ */

.support-header {
    text-align: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px dashed #E0E0E0;
}

.support-title {
    font-size: 1.5rem;
    color: #2E7D32;
    margin-bottom: 0.5rem;
}

.support-subtitle {
    font-size: 1rem;
    color: #666;
    margin: 0;
}

.support-explanation {
    background: #FFF8E1;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border-left: 4px solid #FFA000;
}

.support-explanation p {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.support-explanation p:last-child {
    margin-bottom: 0;
}

.support-goal {
    color: #E65100 !important;
    font-weight: 600;
}

/* ============================================ */
/* RESPONSIVE FOR NEW SECTIONS */
/* ============================================ */

@media (max-width: 768px) {
    .key-quote-box,
    .share-box,
    .citation-box,
    .ai-summary-box {
        padding: var(--space-lg);
    }
    
    .key-quote-vi p {
        font-size: 1.1rem;
    }
    
    .key-quote-en p {
        font-size: 0.95rem;
    }
    
    .share-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .share-btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    .ai-summary-content {
        padding: var(--space-sm);
    }
    
    .ai-summary-content p {
        font-size: 0.9rem;
    }
    
    .support-header {
        margin-bottom: var(--space-md);
    }
    
    .support-title {
        font-size: 1.3rem;
    }
}

/* ============================================ */
/* SECTION 1: TL;DR VISIBLE SECTION */
/* ============================================ */

.tldr-visible-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.tldr-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #4CAF50;
}

.tldr-title {
    font-size: 1.4rem;
    color: #2E7D32;
    margin-bottom: var(--space-lg);
}

.tldr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.tldr-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tldr-label {
    font-size: 0.85rem;
    color: #666;
    font-weight: 600;
    text-transform: uppercase;
}

.tldr-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

.tldr-practices,
.tldr-outcome {
    margin-bottom: var(--space-md);
}

.tldr-practices h4,
.tldr-outcome h4 {
    font-size: 1rem;
    color: #2E7D32;
    margin-bottom: var(--space-sm);
}

.tldr-practices ul,
.tldr-outcome ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tldr-practices li,
.tldr-outcome li {
    padding: 0.5rem 0;
    font-size: 0.95rem;
    color: var(--color-text);
}

.tldr-purpose {
    font-size: 0.95rem;
    color: #666;
    padding-top: var(--space-md);
    border-top: 1px solid #E0E0E0;
    margin: 0;
}

/* ============================================ */
/* SECTION 2: DATASET SUMMARY SECTION */
/* ============================================ */

.dataset-summary-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.dataset-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #1976D2;
}

.dataset-title {
    font-size: 1.4rem;
    color: #1565C0;
    margin-bottom: var(--space-lg);
}

.dataset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.dataset-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dataset-label {
    font-size: 0.85rem;
    color: #666;
    font-weight: 600;
    text-transform: uppercase;
}

.dataset-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

.dataset-methods,
.dataset-outcome {
    margin-bottom: var(--space-md);
}

.dataset-methods h4,
.dataset-outcome h4 {
    font-size: 1rem;
    color: #1565C0;
    margin-bottom: var(--space-sm);
}

.dataset-methods ul,
.dataset-outcome ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0;
}

.dataset-methods li,
.dataset-outcome li {
    padding: 0.3rem 0;
    font-size: 0.95rem;
    color: var(--color-text);
}

.dataset-note {
    font-size: 0.95rem;
    color: #C62828;
    background: #FFEBEE;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin: 0;
}

/* ============================================ */
/* SECTION 3: BASELINE SECTION */
/* ============================================ */

.baseline-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.baseline-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #FF9800;
}

.baseline-title {
    font-size: 1.4rem;
    color: #E65100;
    margin-bottom: var(--space-lg);
}

.baseline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.baseline-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.baseline-label {
    font-size: 0.85rem;
    color: #666;
    font-weight: 600;
    text-transform: uppercase;
}

.baseline-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

.baseline-value.pain-high {
    color: #D32F2F;
    font-weight: 700;
    font-size: 1.2rem;
}

.baseline-conditions h4 {
    font-size: 1rem;
    color: #E65100;
    margin-bottom: var(--space-sm);
}

.baseline-conditions ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.baseline-conditions li {
    padding: 0.4rem 0;
    font-size: 0.95rem;
    color: var(--color-text);
}

.baseline-purpose {
    font-size: 0.9rem;
    color: #666;
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid #E0E0E0;
    margin-bottom: 0;
}

/* ============================================ */
/* SECTION 4: EXPERIMENT TIMELINE SECTION */
/* ============================================ */

.exp-timeline-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
}

.exp-timeline-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-left: 5px solid #9C27B0;
}

.exp-timeline-title {
    font-size: 1.4rem;
    color: #7B1FA2;
    margin-bottom: var(--space-lg);
}

.timeline-entries {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.timeline-entry {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid #F3E5F5;
}

.timeline-entry:last-child {
    border-bottom: none;
}

.timeline-entry.current {
    background: #F3E5F5;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    margin: 0 calc(-1 * var(--space-md));
}

.timeline-year {
    font-weight: 700;
    color: #7B1FA2;
    min-width: 100px;
    font-size: 0.95rem;
}

.timeline-desc {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
}

/* ============================================ */
/* SECTION 5: PROTOCOL SECTION */
/* ============================================ */

.protocol-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E0F2F1 0%, #B2DFDB 100%);
}

.protocol-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #009688;
}

.protocol-title {
    font-size: 1.4rem;
    color: #00796B;
    margin-bottom: var(--space-lg);
}

.protocol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.protocol-time {
    background: #F5F5F5;
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.protocol-time h4 {
    font-size: 1rem;
    color: #00796B;
    margin-bottom: var(--space-sm);
}

.protocol-time ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.protocol-time li {
    padding: 0.3rem 0;
    font-size: 0.9rem;
    color: var(--color-text);
}

.protocol-purpose {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
    padding-top: var(--space-md);
    border-top: 1px solid #E0E0E0;
}

/* ============================================ */
/* SECTION 6: OBSERVATION PATTERN SECTION */
/* ============================================ */

.obs-pattern-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #E8EAF6 0%, #C5CAE9 100%);
}

.obs-pattern-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #3F51B5;
}

.obs-pattern-title {
    font-size: 1.4rem;
    color: #303F9F;
    margin-bottom: var(--space-lg);
}

.obs-entries {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.obs-entry {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid #E8EAF6;
}

.obs-entry:last-child {
    border-bottom: none;
}

.obs-entry.highlight {
    background: #E8EAF6;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    margin: 0 calc(-1 * var(--space-md));
}

.obs-period {
    font-weight: 600;
    color: #303F9F;
    min-width: 100px;
    font-size: 0.9rem;
}

.obs-note {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
}

/* ============================================ */
/* SECTION 7: PAIN TIMELINE SECTION */
/* ============================================ */

.pain-timeline-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #FFEBEE 0%, #FFCDD2 100%);
}

.pain-timeline-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid #E53935;
}

.pain-timeline-title {
    font-size: 1.4rem;
    color: #C62828;
    margin-bottom: var(--space-lg);
}

.pain-entries {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.pain-entry {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    position: relative;
}

.pain-year {
    font-weight: 700;
    min-width: 100px;
    font-size: 0.95rem;
}

.pain-level {
    font-size: 0.95rem;
    color: var(--color-text);
    flex: 1;
    min-width: 200px;
}

.pain-bar {
    height: 8px;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.pain-entry.high .pain-year { color: #D32F2F; }
.pain-entry.high .pain-bar { background: #EF5350; }

.pain-entry.medium .pain-year { color: #F57C00; }
.pain-entry.medium .pain-bar { background: #FFA726; }

.pain-entry.low .pain-year { color: #388E3C; }
.pain-entry.low .pain-bar { background: #66BB6A; }

.pain-entry.stable .pain-year { color: #1976D2; }
.pain-entry.stable .pain-bar { background: #42A5F5; }

/* ============================================ */
/* SECTION 8: LOG CLARIFICATION */
/* ============================================ */

.log-clarification {
    background: #F5F5F5;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border-left: 4px solid #7c3aed;
}

.log-clarification p {
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.log-clarification ul {
    list-style: none;
    padding: 0;
    margin: var(--space-sm) 0;
}

.log-clarification li {
    padding: 0.3rem 0;
    font-size: 0.9rem;
    color: var(--color-text);
}

.log-clarification .log-purpose {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
    padding-top: var(--space-sm);
    border-top: 1px solid #E0E0E0;
}

/* ============================================ */
/* SUPPORT LIST STYLING */
/* ============================================ */

.support-list {
    list-style: none;
    padding: 0;
    margin: var(--space-sm) 0;
}

.support-list li {
    padding: 0.3rem 0;
    font-size: 0.95rem;
}

.support-highlight {
    font-size: 1rem !important;
    color: #2E7D32 !important;
}

.share-insight {
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
    margin-bottom: var(--space-md);
}

.citation-source {
    font-size: 1rem;
    margin: 0;
}

/* ============================================ */
/* RESPONSIVE FOR NEW SECTIONS */
/* ============================================ */

@media (max-width: 768px) {
    .tldr-box,
    .dataset-box,
    .baseline-box,
    .exp-timeline-box,
    .protocol-box,
    .obs-pattern-box,
    .pain-timeline-box {
        padding: var(--space-lg);
    }
    
    .tldr-title,
    .dataset-title,
    .baseline-title,
    .exp-timeline-title,
    .protocol-title,
    .obs-pattern-title,
    .pain-timeline-title {
        font-size: 1.2rem;
    }
    
    .tldr-grid,
    .dataset-grid,
    .baseline-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .protocol-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-entry,
    .obs-entry {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .timeline-year,
    .obs-period,
    .pain-year {
        min-width: auto;
    }
    
    .pain-entry {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .pain-bar {
        width: 100% !important;
        max-width: 200px;
    }
}