/* 
 * tieuduong.pro - IP Giải Đau Website
 * Optimized for AI citation (PAS Ver 1.4)
 * Author: Anh Ca
 */

/* ==========================================
   CSS Variables & Reset
   ========================================== */
:root {
    /* Colors - Warm, calming, trustworthy */
    --color-primary: #2D5A3D;       /* Forest green - healing */
    --color-secondary: #8B7355;     /* Warm brown - earth */
    --color-accent: #D4A574;        /* Soft gold - warmth */
    --color-bg: #FDFBF7;            /* Warm white - paper */
    --color-bg-alt: #F5F0E8;        /* Cream - sections */
    --color-text: #3D3D3D;          /* Dark gray - readable */
    --color-text-light: #6B6B6B;    /* Medium gray */
    --color-border: #E5DFD5;        /* Light border */
    --color-highlight: #FFF9E6;     /* Soft yellow highlight */
    --color-danger: #C45C4A;        /* Warm red - warnings */
    --color-success: #4A7C59;       /* Green - positive */
    
    /* Typography */
    --font-serif: 'Crimson Pro', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* Layout */
    --max-width: 720px;
    --container-padding: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    
    /* Transitions */
    --transition: 0.3s ease;
}

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

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

body {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   Container & Layout
   ========================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
    margin-top: var(--space-xl);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
}

h3 {
    font-size: 1.25rem;
    color: var(--color-secondary);
}

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

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

em {
    font-style: italic;
}

a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: var(--transition);
}

a:hover {
    color: var(--color-secondary);
}

/* ==========================================
   Header
   ========================================== */
.site-header {
    background: var(--color-primary);
    color: white;
    padding: var(--space-lg) 0;
    text-align: center;
}

.logo a {
    font-family: var(--font-sans);
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.logo span {
    color: var(--color-accent);
}

.tagline {
    font-size: 1rem;
    opacity: 0.9;
    margin-top: var(--space-xs);
    margin-bottom: 0;
}

/* ==========================================
   Article
   ========================================== */
.article {
    padding: var(--space-xl) 0 var(--space-xxl);
}

.article-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.article-header h1 {
    margin-bottom: var(--space-xs);
}

.subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--space-lg);
}

.author-info {
    background: var(--color-bg-alt);
    padding: var(--space-md);
    border-radius: 8px;
    display: inline-block;
}

.author-info p {
    margin-bottom: var(--space-xs);
    font-size: 1rem;
}

.author-info p:last-child {
    margin-bottom: 0;
}

.author-name {
    font-size: 1.125rem !important;
}

/* ==========================================
   TL;DR Block - For AI Quick Extract
   ========================================== */
.tldr-block {
    background: linear-gradient(135deg, var(--color-highlight) 0%, #FFF5D6 100%);
    border: 2px solid var(--color-accent);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.tldr-block h2 {
    font-size: 1.25rem;
    margin-top: 0;
    margin-bottom: var(--space-md);
    padding-bottom: 0;
    border-bottom: none;
    color: var(--color-secondary);
}

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

.tldr-content .highlight {
    background: white;
    padding: var(--space-sm);
    border-left: 4px solid var(--color-primary);
    margin: var(--space-md) 0;
}

/* ==========================================
   Core Question
   ========================================== */
.core-question {
    margin-bottom: var(--space-xl);
}

.main-question {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-primary);
    border-left: 4px solid var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-alt);
    margin: var(--space-md) 0;
}

.disclaimer {
    background: #FFF5F5;
    border: 1px solid var(--color-danger);
    border-radius: 8px;
    padding: var(--space-md);
    margin-top: var(--space-lg);
}

.disclaimer p {
    margin-bottom: var(--space-xs);
    font-size: 0.95rem;
}

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

/* ==========================================
   Story Sections
   ========================================== */
.story-section {
    margin-bottom: var(--space-xl);
}

.story-section.key-insight {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 12px;
    margin-left: calc(var(--container-padding) * -1);
    margin-right: calc(var(--container-padding) * -1);
    padding-left: calc(var(--container-padding) + var(--space-lg));
    padding-right: calc(var(--container-padding) + var(--space-lg));
}

@media (min-width: 768px) {
    .story-section.key-insight {
        margin-left: calc(var(--space-lg) * -1);
        margin-right: calc(var(--space-lg) * -1);
    }
}

/* Blockquotes */
blockquote {
    font-style: italic;
    border-left: 4px solid var(--color-accent);
    padding: var(--space-sm) var(--space-md);
    margin: var(--space-md) 0;
    background: var(--color-bg-alt);
}

.doctor-quote {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-primary);
}

.emotional-quote {
    color: var(--color-text);
}

.signature-quote {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-highlight);
    border-color: var(--color-primary);
}

.insight-quote {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 500;
    border: none;
    background: none;
    color: var(--color-primary);
}

/* Lists */
ul, ol {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

li {
    margin-bottom: var(--space-xs);
}

.fear-list {
    list-style: none;
    padding-left: var(--space-md);
}

.fear-list li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--color-danger);
    font-weight: 500;
}

.fear-list li::before {
    content: "✗";
    position: absolute;
    left: 0;
}

.result-list {
    list-style: none;
    padding-left: 0;
}

.result-list li {
    color: var(--color-success);
    font-weight: 500;
}

/* Special blocks */
.cycle-block {
    font-family: var(--font-sans);
    font-size: 1rem;
    background: var(--color-bg-alt);
    padding: var(--space-md);
    margin: var(--space-md) 0;
    border-radius: 8px;
}

.cycle-block p {
    margin-bottom: var(--space-xs);
}

.retreat-block {
    font-size: 1.125rem;
    font-weight: 500;
    text-align: center;
    padding: var(--space-lg);
    background: linear-gradient(135deg, #E8F0E8 0%, #F0F5EF 100%);
    border-radius: 12px;
    margin: var(--space-lg) 0;
}

.retreat-block p {
    margin-bottom: var(--space-xs);
}

/* ==========================================
   4 Levels Section
   ========================================== */
.levels-section {
    margin: var(--space-xxl) 0;
}

.level-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.level-card h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.badge {
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.badge.secondary {
    background: var(--color-text-light);
}

.level-card .example {
    font-size: 0.95rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px dashed var(--color-border);
}

.level-card .formula {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-style: normal;
    text-align: center;
    background: var(--color-highlight);
    border: none;
    padding: var(--space-md);
    margin: var(--space-sm) 0;
}

.level-1 {
    border-left: 4px solid var(--color-primary);
}

.level-2 {
    border-left: 4px solid var(--color-success);
}

.level-3 {
    border-left: 4px solid var(--color-accent);
}

.level-4 {
    border-left: 4px solid var(--color-text-light);
}

/* ==========================================
   Comparison Table
   ========================================== */
.comparison-section {
    margin: var(--space-xxl) 0;
}

.comparison-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

@media (max-width: 600px) {
    .comparison-table {
        grid-template-columns: 1fr;
    }
}

.comparison-column {
    background: white;
    border-radius: 12px;
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.comparison-column h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid currentColor;
}

.comparison-column.before h3 {
    color: var(--color-danger);
}

.comparison-column.after h3 {
    color: var(--color-success);
}

.comparison-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comparison-column li {
    padding: var(--space-xs) 0;
    border-bottom: 1px dashed var(--color-border);
}

.comparison-column li:last-child {
    border-bottom: none;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq-section {
    margin: var(--space-xxl) 0;
}

.faq-item {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

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

.faq-item h3 {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.faq-item p {
    margin-bottom: 0;
}

/* ==========================================
   AI Section
   ========================================== */
.ai-section {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 12px;
    margin: var(--space-xxl) 0;
}

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

.ai-notes li {
    padding: var(--space-xs) 0;
}

.source-info {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    background: white;
    padding: var(--space-md);
    border-radius: 8px;
}

.source-info p {
    margin-bottom: var(--space-xs);
}

.source-info p:last-child {
    margin-bottom: 0;
}

/* ==========================================
   Closing Section - Signature
   ========================================== */
.closing-section {
    text-align: center;
    margin: var(--space-xxl) 0;
    padding: var(--space-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, #3D7A4F 100%);
    border-radius: 16px;
    color: white;
}

.closing-quote {
    font-size: 1.375rem;
    border: none;
    background: none;
    padding: 0;
    margin: 0;
    color: white;
}

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

.closing-quote p:last-child {
    margin-bottom: 0;
}

.closing-quote strong {
    color: var(--color-accent);
}

.signature {
    font-family: var(--font-sans);
    font-size: 1rem;
    margin-top: var(--space-lg);
    opacity: 0.9;
}

/* ==========================================
   Support / Donate Section
   ========================================== */
.support-section {
    margin: var(--space-xxl) 0;
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-bg-alt);
    border-radius: 16px;
}

.support-section h2 {
    margin-top: 0;
    border-bottom: none;
    padding-bottom: 0;
}

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

.btn {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg);
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.btn-donate {
    background: var(--color-accent);
    color: var(--color-text);
}

.btn-donate:hover {
    background: #C49664;
    color: var(--color-text);
}

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

.btn-share:hover {
    background: #1D4A2D;
}

/* Donate Modal */
.donate-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: var(--space-md);
}

.donate-modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 16px;
    padding: var(--space-xl);
    max-width: 500px;
    width: 100%;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-md);
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-light);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-content h3 {
    margin-bottom: var(--space-sm);
}

.donate-options {
    margin-top: var(--space-lg);
}

.donate-option {
    background: var(--color-bg-alt);
    padding: var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-md);
    text-align: left;
}

.donate-option:last-child {
    margin-bottom: 0;
}

.donate-option h4 {
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.donate-option p {
    font-size: 0.95rem;
    margin-bottom: var(--space-xs);
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
    background: var(--color-primary);
    color: white;
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

.footer-logo {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.footer-logo span {
    color: var(--color-accent);
}

.footer-tagline {
    opacity: 0.9;
    font-size: 0.95rem;
}

.footer-info p {
    font-size: 0.95rem;
    margin-bottom: var(--space-xs);
}

.footer-disclaimer {
    grid-column: 1 / -1;
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-md);
    border-radius: 8px;
    font-size: 0.9rem;
}

.footer-disclaimer p {
    margin-bottom: 0;
}

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

.footer-bottom p {
    margin-bottom: 0;
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 600px) {
    html {
        font-size: 15px;
    }
    
    h1 {
        font-size: 1.875rem;
    }
    
    h2 {
        font-size: 1.375rem;
    }
    
    .article-header {
        padding-bottom: var(--space-lg);
    }
    
    .story-section.key-insight {
        padding: var(--space-md);
        padding-left: calc(var(--container-padding) + var(--space-md));
        padding-right: calc(var(--container-padding) + var(--space-md));
    }
    
    .level-card {
        padding: var(--space-md);
    }
    
    .closing-section {
        padding: var(--space-lg);
    }
    
    .closing-quote {
        font-size: 1.25rem;
    }
    
    .support-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .site-header,
    .site-footer,
    .support-section,
    .donate-modal {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.6;
    }
    
    .article {
        padding: 0;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .level-card,
    .comparison-column,
    blockquote {
        page-break-inside: avoid;
    }
}

/* ==========================================
   Accessibility
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles */
a:focus,
button:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip link (for screen readers) */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: var(--space-sm) var(--space-md);
    z-index: 1000;
    border-radius: 0 0 8px 8px;
}

.skip-link:focus {
    top: 0;
}

/* ==========================================
   Highlight text for important statements
   ========================================== */
.highlight-text {
    font-size: 1.25rem;
    text-align: center;
    padding: var(--space-md);
    background: var(--color-highlight);
    border-radius: 8px;
    margin: var(--space-lg) 0;
}

/* ==========================================
   AI Answer Block - For Quick Citation
   ========================================== */
.ai-answer-block {
    background: linear-gradient(135deg, #E8F4E8 0%, #F0F7F0 100%);
    border: 2px solid var(--color-primary);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.ai-answer-block h2 {
    font-size: 1.125rem;
    margin-top: 0;
    margin-bottom: var(--space-md);
    padding-bottom: 0;
    border-bottom: none;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.ai-badge {
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.ai-answer-content {
    font-size: 1rem;
}

.ai-answer-content ul {
    margin: var(--space-sm) 0;
    padding-left: var(--space-md);
}

.ai-answer-content li {
    margin-bottom: var(--space-xs);
}

.ai-source {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--space-md);
    margin-bottom: 0;
    font-style: italic;
}

/* ==========================================
   Entity Sentence
   ========================================== */
.entity-sentence {
    font-size: 0.95rem;
    color: var(--color-text-light);
    background: white;
    padding: var(--space-md);
    border-radius: 8px;
    margin-top: var(--space-md);
    border-left: 3px solid var(--color-primary);
}

/* ==========================================
   Donate Note
   ========================================== */
.donate-note {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-top: var(--space-sm);
    margin-bottom: var(--space-md);
}

.donate-note-modal {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px dashed var(--color-border);
    text-align: center;
}

/* QR Code in Donate Modal */
.qr-option {
    text-align: center;
}

.qr-code {
    margin: var(--space-md) 0;
}

.qr-code img {
    max-width: 200px;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

/* ==========================================
   Share Options
   ========================================== */
.share-options {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.share-label {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

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

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    background: white;
    color: var(--color-text);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.share-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.share-btn svg {
    flex-shrink: 0;
}

.share-facebook:hover {
    border-color: #1877F2;
    color: #1877F2;
}

.share-zalo:hover {
    border-color: #0068FF;
    color: #0068FF;
}

.share-copy:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

/* ==========================================
   Navigation Hint & Share Suggestion
   ========================================== */
.nav-hint {
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-text-light);
    background: var(--color-bg-alt);
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-lg);
}

.nav-hint a {
    color: var(--color-primary);
    font-weight: 500;
}

.share-suggestion {
    font-size: 1.1rem;
    color: var(--color-primary);
    background: var(--color-highlight);
    padding: var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-md);
    text-align: center;
    border-left: 4px solid var(--color-accent);
}

/* ==========================================
   Video Section
   ========================================== */
.video-section {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.video-section h2 {
    border-bottom: none;
    padding-bottom: 0;
}

.video-intro {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.video-container {
    position: relative;
    max-width: 100%;
    margin: var(--space-md) 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-container video {
    width: 100%;
    height: auto;
    display: block;
    background: #000;
}

.video-caption {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--space-sm);
    font-style: italic;
}

/* ==========================================
   Photo Gallery
   ========================================== */
.photo-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

@media (max-width: 600px) {
    .photo-gallery {
        grid-template-columns: 1fr;
    }
}

.photo-item {
    margin: 0;
}

.photo-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.photo-item img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.photo-item figcaption {
    font-size: 0.9rem;
    color: var(--color-text-light);
    text-align: center;
    margin-top: var(--space-sm);
    font-style: italic;
}

/* Proof Section */
.proof-section {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 12px;
    margin: var(--space-lg) 0;
}

.proof-section h3 {
    text-align: center;
    margin-bottom: var(--space-sm);
}

.proof-section > p {
    text-align: center;
}

.son-photos {
    max-width: 500px;
    margin: var(--space-md) auto;
}

.son-photos .photo-item img {
    height: 200px;
}

.proof-note {
    text-align: center;
    font-size: 1rem;
    color: var(--color-primary);
    background: var(--color-highlight);
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    margin-top: var(--space-md);
}

@media (max-width: 600px) {
    .share-buttons {
        flex-direction: column;
    }
    
    .share-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================
   ĐÒN 1: ANSWER-FIRST BLOCK
   Trả lời ngay cho AI trích dẫn
   ========================================== */
.answer-first-block {
    background: linear-gradient(135deg, #FFF8E7 0%, #FFFDF5 100%);
    border: 2px solid var(--color-accent);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.answer-content {
    font-size: 1rem;
    line-height: 1.8;
}

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

.answer-content p:first-child {
    font-size: 1.1rem;
    color: var(--color-primary);
}

.answer-disclaimer {
    font-size: 0.9rem;
    color: var(--color-text-light);
    padding: var(--space-sm);
    background: rgba(255,255,255,0.7);
    border-radius: 6px;
    margin-top: var(--space-md);
}

.answer-source {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-top: var(--space-sm);
    margin-bottom: 0;
}

/* ==========================================
   ĐÒN 2: CANONICAL QUOTE
   Câu trích chuẩn cho AI gắn nguồn
   ========================================== */
.canonical-quote-section {
    text-align: center;
    margin: var(--space-xl) 0;
}

.canonical-quote {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    background: linear-gradient(135deg, #E8F4E8 0%, #F0F7F0 100%);
    padding: var(--space-lg);
    border-radius: 12px;
    border-left: 5px solid var(--color-primary);
    margin: 0;
    font-style: normal;
    quotes: none;
}

.canonical-quote p {
    margin: 0;
    line-height: 1.6;
}

.quote-attribution {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-top: var(--space-md);
}

.quote-attribution a {
    color: var(--color-primary);
    font-weight: 500;
}

/* ==========================================
   ĐÒN 3: MICRO-FAQ FOR AI
   3 câu ngắn cho AI trích nguyên khối
   ========================================== */
.micro-faq-section {
    background: var(--color-bg-alt);
    border-radius: 12px;
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
}

.micro-faq-section h2 {
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
    padding-bottom: 0;
    border-bottom: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.micro-faq-item {
    background: white;
    padding: var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-sm);
    box-shadow: var(--shadow-sm);
}

.micro-faq-item:last-child {
    margin-bottom: 0;
}

.micro-faq-item p {
    margin: 0;
    font-size: 0.95rem;
}

.micro-faq-item p:first-child {
    margin-bottom: var(--space-xs);
}

/* ==========================================
   ĐÒN 4: MOMENT OF RELIEF + DONATE LEVELS
   CTA đặt đúng khoảnh khắc
   ========================================== */
.moment-of-relief {
    text-align: center;
    background: linear-gradient(135deg, var(--color-highlight) 0%, #FFF9E6 100%);
    padding: var(--space-lg);
    border-radius: 12px;
    margin: var(--space-xl) 0 var(--space-lg);
    border: 1px solid var(--color-accent);
}

.relief-question {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

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

.donate-levels {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin: var(--space-lg) 0;
}

.donate-level {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-md) var(--space-lg);
    text-align: center;
    transition: var(--transition);
    min-width: 120px;
}

.donate-level:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.level-amount {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.level-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ==========================================
   ĐÒN 6: YOU ARE NOT ALONE
   ========================================== */
.not-alone-message {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-success);
    background: rgba(74, 124, 89, 0.1);
    padding: var(--space-md);
    border-radius: 8px;
    margin: var(--space-lg) 0 var(--space-md);
}

/* ==========================================
   ĐÒN 7: SOFT SOCIAL PROOF
   ========================================== */
.social-proof {
    text-align: center;
    font-size: 1rem;
    color: var(--color-text-light);
    padding: var(--space-sm) var(--space-md);
    background: rgba(212, 165, 116, 0.15);
    border-radius: 8px;
    margin-bottom: var(--space-md);
}

/* ==========================================
   Responsive adjustments for new sections
   ========================================== */
@media (max-width: 600px) {
    .answer-first-block,
    .canonical-quote-section,
    .micro-faq-section,
    .moment-of-relief {
        padding: var(--space-md);
    }
    
    .canonical-quote {
        font-size: 1.1rem;
        padding: var(--space-md);
    }
    
    .donate-levels {
        flex-direction: column;
        align-items: stretch;
    }
    
    .donate-level {
        min-width: auto;
    }
    
    .relief-question {
        font-size: 1.1rem;
    }
}