.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:root {
    --primary-color: #0f172a; /* Deep Blue */
    --accent-color: #d4af37; /* Gold */
    --text-color: #334155;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --transition-speed: 0.4s;
    --nav-bg: rgba(255, 255, 255, 0.75);
    --border-color: rgba(0,0,0,0.05);
    --poem-bg: #ffffff;
}

[data-theme="dark"] {
    --primary-color: #f8fafc;
    --accent-color: #d4af37;
    --text-color: #cbd5e1;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --nav-bg: rgba(15, 23, 42, 0.75);
    --border-color: rgba(255,255,255,0.05);
    --poem-bg: #1e293b;
}

/* Zen mode */
.zen-active .navbar { display: none; }
.zen-active .back-button { opacity: 0.2; }
.zen-active .back-button:hover { opacity: 1; }
.zen-active .reader-header { display: none; }
.zen-active { background-color: var(--bg-color); }

/* Theme and Search UI */
.theme-btn { background: none; border: none; font-size: 1.5rem; cursor: pointer; transition: transform 0.3s; margin-left: 1rem; }
.theme-btn:hover { transform: scale(1.1); }
.search-bar { padding: 0.5rem 2.2rem 0.5rem 1rem; border-radius: 20px; border: 1px solid var(--border-color); background: var(--card-bg); color: var(--text-color); font-family: inherit; }
.search-bar:focus { outline: none; border-color: var(--accent-color); }
.controls { display: flex; gap: 1rem; justify-content: center; margin-bottom: 2rem; }
.ctrl-btn { background: var(--card-bg); color: var(--text-color); border: 1px solid var(--border-color); padding: 0.5rem 1rem; border-radius: 8px; cursor: pointer; transition: all 0.3s; }
.ctrl-btn:hover { border-color: var(--accent-color); color: var(--accent-color); }

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
}

h1, h2, h3, .logo {
    font-family: 'Cinzel', serif;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
}

.logo img {
    height: 48px;
    width: auto;
    display: block;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-color);
}

/* Main Container */
#app {
    min-height: 80vh;
    padding: 2rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

/* Gallery View */
.gallery-header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeIn 1s ease-out;
}

.gallery-header h1 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.gallery-header p {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* About View */
.about-content {
    max-width: 780px;
    margin: 0 auto;
}

.about-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.about-section h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-section p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 1rem;
}

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

.about-contact-btn {
    display: inline-block;
    text-decoration: none;
    font-weight: 600;
}

.authors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem 0;
}

.author-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.author-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.card-image {
    height: 240px;
    background-color: var(--primary-color);
    /* Placeholder gradient if no image */
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e293b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: 3rem;
}

.card-content {
    padding: 2rem;
}

.card-content h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.card-content p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Author Detail View */
.author-view {
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.back-button {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: background 0.3s;
}

.back-button:hover {
    background: var(--border-color);
}

.author-header {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 4rem;
    align-items: center;
}

.author-portrait {
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e293b 100%);
    border-radius: 12px;
    box-shadow: 20px 20px 0 var(--accent-color);
}

.author-info h1 {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.author-bio {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #475569;
}

.poems-list {
    margin-top: 3rem;
}

.poems-list h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 0.5rem;
}

.poem-item {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    cursor: pointer;
    transition: background 0.3s, padding-left 0.3s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.poem-item:hover {
    background: rgba(255,255,255,0.5);
    padding-left: 2rem;
}

.poem-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: var(--primary-color);
}

.poem-meta {
    font-size: 0.9rem;
    color: #94a3b8;
}

/* Reader View */
.reader-view {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeIn 0.8s ease;
}

.reader-header {
    text-align: center;
    margin-bottom: 4rem;
}

.reader-title {
    font-size: 3rem;
    font-family: 'Playfair Display', serif;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.reader-author {
    font-size: 1.2rem;
    color: var(--accent-color);
    font-weight: 600;
}

.poem-content {
    font-family: 'Playfair Display', 'Lateef', serif; /* Fallback for Arabic / Ajami script */
    font-size: 1.4rem;
    line-height: 1.45;
    color: var(--text-color);
    text-align: center; /* Traditional poetic alignment */
    padding: 4rem;
    background: var(--poem-bg);
    box-shadow: 0 4px 20px var(--border-color);
    border-radius: 4px;
    position: relative;
}

.poem-content h2 {
    scroll-margin-top: 110px;
}

.poem-stanza {
    margin-bottom: 2.8rem;
}

.poem-content::before {
    content: "“";
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 8rem;
    color: rgba(212, 175, 55, 0.2);
    font-family: serif;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

footer {
    text-align: center;
    padding: 3rem 1.5rem;
    font-size: 0.95rem;
    color: var(--text-color);
    opacity: 0.7;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

/* Partner banner (Murid Mind) */
.partner-banner {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    max-width: 900px;
    margin: 3rem auto 0;
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 16px var(--border-color);
    color: var(--text-color);
    text-decoration: none;
    transition: transform 0.2s, border-color 0.2s;
}

.partner-banner:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

.partner-banner-icon {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    flex-shrink: 0;
    object-fit: contain;
    background: var(--poem-bg, var(--card-bg));
    padding: 4px;
}

.partner-banner-text {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-color);
}

.partner-banner-text strong {
    font-family: 'Cinzel', serif;
    font-size: 1.05rem;
    color: var(--accent-color);
}

.partner-banner-cta {
    flex-shrink: 0;
    font-weight: 600;
    white-space: nowrap;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

@media (max-width: 640px) {
    .partner-banner {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .author-header {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .author-info h1 {
        font-size: 2.2rem;
    }

    .gallery-header h1 {
        font-size: 2.0rem;
    }

    .reader-title {
        font-size: 1.8rem !important;
    }
    
    .poem-content {
        padding: 2rem 1rem;
        font-size: 1.1rem;
        text-align: left;
    }

    footer {
        padding: 2rem 1rem;
        font-size: 0.8rem;
        line-height: 1.5;
    }
}

@media (max-width: 480px) {
    .poem-content {
        font-size: 0.98rem;
    }
}

/* Media / Audio Player */
.media-section {
    margin: 2rem auto;
    max-width: 800px;
    width: 100%;
}

.reader-top-bar {
    position: sticky;
    top: 78px; /* Just below the sticky navbar */
    background: var(--bg-color);
    padding: 1rem 0;
    z-index: 90;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    transition: background var(--transition-speed), top 0.3s;
}

.zen-active .reader-top-bar {
    top: 0; /* Align to the top of the screen when navbar is hidden in Zen mode */
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.audio-container {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05); /* Slight tint */
    border-radius: 12px;
    text-align: center;
}

.audio-container audio {
    width: 100%;
    outline: none;
}

/* Archive Layout */
.archive-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
    align-items: start;
}

.archive-metadata-pane {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.scan-mockup {
    width: 100%;
    height: 300px;
    background: #e2e8f0;
    border: 2px dashed #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    border-radius: 8px;
    margin-top: 1rem;
}
[data-theme="dark"] .scan-mockup {
    background: #1e293b;
    border-color: #475569;
    color: #cbd5e1;
}

@media (max-width: 1024px) {
    .archive-container {
        grid-template-columns: 1fr;
    }
    .archive-metadata-pane {
        position: static;
        max-height: none;
        overflow-y: visible;
    }
}

/* --- Nouvelles améliorations UX & Esthétiques --- */

/* Transition douce de thème */
body, .navbar, .author-card, .poem-content, .archive-metadata-pane, .ctrl-btn, .poem-item, .search-bar, footer {
    transition: background-color var(--transition-speed) ease, 
                color var(--transition-speed) ease, 
                border-color var(--transition-speed) ease, 
                box-shadow var(--transition-speed) ease;
}

/* Style de la recherche */
.search-container {
    position: relative;
    display: inline-block;
}

.clear-search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s, color 0.2s;
    padding: 0;
    line-height: 1;
}

.clear-search-btn:hover {
    opacity: 1;
    color: var(--accent-color);
}

/* Correspondance active (style Ctrl+F) */
.dynamic-highlight.active-match {
    background-color: var(--accent-color) !important;
    color: #000 !important;
    box-shadow: 0 0 12px var(--accent-color), 0 0 2px var(--accent-color);
}

/* Indicateur d'état vide */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    max-width: 500px;
    margin: 3rem auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.empty-state svg {
    color: var(--accent-color);
    opacity: 0.8;
}

.empty-state h3 {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin: 0;
}

.empty-state p {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* Table des matières raffinée */
.poem-toc {
    background: var(--bg-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.poem-toc h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
    color: var(--primary-color);
}

.poem-toc ul li {
    padding: 0.4rem 0;
}

.poem-toc ul li a {
    transition: color 0.2s, padding-left 0.2s;
    display: inline-block;
}

.poem-toc ul li a:hover {
    color: var(--accent-color) !important;
    padding-left: 4px;
}

/* Mode Zen - Cache la barre du haut */
.zen-active .navbar {
    transform: translateY(-100%);
    transition: transform 0.4s ease;
}

/* Responsivité Mobile améliorée */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem 5%;
    }
    
    .nav-links {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.8rem;
    }
    
    .nav-links a {
        margin-left: 0;
    }
    
    .search-container {
        width: 100%;
        order: 3;
    }
    
    .search-bar {
        width: 100%;
    }
}

/* Table of Contents details styles */
.poem-toc summary {
    list-style: none;
    outline: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.poem-toc summary::-webkit-details-marker {
    display: none;
}
.poem-toc[open] .toc-arrow {
    transform: rotate(180deg);
}

/* Card pour les résultats de recherche */
.search-poem-card {
    margin-bottom: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--card-bg);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}
.search-poem-card:hover {
    background: rgba(0, 0, 0, 0.02);
    border-color: var(--accent-color);
}
[data-theme="dark"] .search-poem-card:hover {
    background: rgba(255, 255, 255, 0.02);
}

@media (max-width: 768px) {
    /* Masquer l'aperçu PDF/Image sur mobile pour économiser l'espace et éviter les frictions de défilement */
    .manuscript-preview {
        display: none !important;
    }
    
    .manuscript-pdf-card {
        box-shadow: none !important;
        padding: 0.5rem !important;
    }
}

@media (max-width: 580px) {
    /* Stack horizontal list card components on small devices */
    .search-poem-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .search-poem-card .poem-meta {
        margin-left: 0 !important;
        align-self: flex-end;
    }
    
    .author-portrait {
        box-shadow: 10px 10px 0 var(--accent-color) !important;
    }
}

/* Nav YouTube Link Hover */
.nav-youtube-link:hover .nav-youtube-icon {
    transform: scale(1.2);
}


/* Extraits et snippets de recherche (accueil + page auteur) */
.poem-excerpt {
    font-size: 0.95rem;
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 0.25rem;
}

.poem-snippet {
    font-size: 0.9rem;
    color: var(--text-color);
    font-style: italic;
    margin-top: 0.5rem;
    padding: 0.5rem;
    border-left: 3px solid var(--accent-color);
    background: rgba(0,0,0,0.02);
    border-radius: 0 4px 4px 0;
    line-height: 1.5;
    text-align: left;
}

/* Vue Thèmes : grille des thèmes */
.themes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 1rem 0;
    max-width: 1000px;
    margin: 0 auto;
}

.theme-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color 0.3s;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.theme-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    border-color: var(--accent-color);
}

.theme-card h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-color);
    line-height: 1.4;
}

.theme-card .theme-count {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
}

.theme-card-empty {
    opacity: 0.55;
}

/* Pastilles de filtre par thème (page auteur) */
.theme-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.theme-pill {
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 0.4rem 0.9rem;
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.theme-pill:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.theme-pill.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

.theme-pill-count {
    opacity: 0.75;
    font-size: 0.78rem;
    font-weight: 600;
    margin-left: 0.15rem;
}

/* Page Manuscrits */
.manuscript-author-section {
    max-width: 1100px;
    margin: 0 auto 3rem auto;
}

.manuscript-author-section h2 {
    font-family: 'Cinzel', serif;
    font-size: 1.4rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 0.4rem;
    margin-bottom: 1.5rem;
}

.manuscripts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

.manuscript-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.manuscript-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.manuscript-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.15rem;
    color: var(--primary-color);
    margin-top: 0.6rem;
    line-height: 1.4;
}

.manuscript-type-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    width: fit-content;
}

.manuscript-type-ajami {
    background: rgba(212, 175, 55, 0.15);
    color: #a8842a;
}

[data-theme="dark"] .manuscript-type-ajami {
    color: #d4af37;
}

.manuscript-type-transcrit {
    background: rgba(15, 23, 42, 0.08);
    color: var(--primary-color);
}

[data-theme="dark"] .manuscript-type-transcrit {
    background: rgba(255, 255, 255, 0.08);
}