@font-face {
    font-family: 'Scheherazade';
    src: url('../assets/Scheherazade.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

:root {
    --bg: #FAFAF5;
    --bg-surface: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #555555;
    --text-arabic: #1A3A2A;
    --text-translit: #6B7280;
    --accent: #1B6B4A;
    --accent-light: #E8F5EE;
    --accent-hover: #155A3E;
    --border: #E8E5DD;
    --shadow: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.08);
    --nav-bg: #1B6B4A;
    --nav-text: #FFFFFF;
    --radius: 8px;
    --badge-bg: #E8F5EE;
    --badge-text: #1B6B4A;
    --para-gap: 28px;
}

[data-theme="dark"] {
    --bg: #121714;
    --bg-surface: #1C2420;
    --text-primary: #E0E0D8;
    --text-secondary: #9A9A90;
    --text-arabic: #D4E8DC;
    --text-translit: #8B9580;
    --accent: #4CAF7C;
    --accent-light: #1A2E22;
    --accent-hover: #5CC98E;
    --border: #2A3530;
    --shadow: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.3);
    --nav-bg: #0D2E1F;
    --nav-text: #E0E0D8;
    --badge-bg: #1A2E22;
    --badge-text: #4CAF7C;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

nav {
    background: var(--nav-bg);
    color: var(--nav-text);
    padding: 0 20px;
    height: 56px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-lg);
}
nav a { color: var(--nav-text); text-decoration: none; }
.nav-title { font-size: 1.05rem; font-weight: 600; }
.nav-controls { display: flex; gap: 8px; align-items: center; }
.nav-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--nav-text);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
}
.nav-btn:hover { background: rgba(255,255,255,0.2); }
.nav-btn.active { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.5); }
.nav-btn:not(.active) { opacity: 0.6; }

.container { max-width: 720px; margin: 0 auto; padding: 24px 20px; }

.page-header {
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.page-header .arabic-title {
    font-family: 'Scheherazade', 'Traditional Arabic', serif;
    font-size: 2rem;
    color: var(--text-arabic);
    direction: rtl;
    line-height: 2.2;
    margin-bottom: 4px;
}
.page-header .english-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent);
}
.page-header .subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.breadcrumb {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}
.breadcrumb a { color: var(--accent); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* Content paragraphs */
.paragraph-group {
    margin-bottom: var(--para-gap);
    padding-bottom: var(--para-gap);
    border-bottom: 1px solid var(--border);
}
.paragraph-group:last-child { border-bottom: none; margin-bottom: 0; }
/* When English is hidden, tighten spacing */
.paragraph-group:has(.para-english.hidden) .para-arabic { margin-bottom: 0; }
.paragraph-group:has(.para-english.hidden) { margin-bottom: 16px; padding-bottom: 16px; }
/* Hide empty paragraphs */
.paragraph-group:not(:has(.para-arabic)):not(:has(.para-english:not(.hidden))) { display: none; }
.para-arabic {
    font-family: 'Scheherazade', 'Traditional Arabic', 'Amiri', serif;
    font-size: var(--arabic-size, 1.8rem);
    line-height: 2.0;
    color: var(--text-arabic);
    direction: rtl;
    text-align: center;
    margin-bottom: 12px;
}
.para-english {
    font-size: var(--english-size, 1.05rem);
    line-height: 1.7;
    color: var(--text-primary);
}
.para-english.hidden { display: none; }
.para-heading {
    font-size: 1rem;
    font-weight: 700;
    text-align: center;
    margin: 24px 0 16px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

/* Compact mode */
[data-view="compact"] .paragraph-group {
    margin-bottom: 4px;
    padding-bottom: 4px;
    border-bottom: none;
}
[data-view="compact"] .para-arabic { margin-bottom: 2px; line-height: 1.7; }
[data-view="compact"] .para-english { line-height: 1.4; }
[data-view="compact"] .para-heading { margin: 8px 0 4px; }
[data-view="compact"] .paragraph-group:has(.para-english.hidden) { margin-bottom: 2px; padding-bottom: 2px; }

/* Settings panel */
.settings-panel {
    display: none;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.settings-panel.open { display: block; }
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}
.setting-row:last-child { margin-bottom: 0; }
.setting-label { font-size: 0.85rem; color: var(--text-secondary); white-space: nowrap; }
.setting-row input[type="range"] {
    flex: 1;
    max-width: 200px;
    accent-color: var(--accent);
}
.view-toggle { display: flex; gap: 0; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.view-btn {
    padding: 5px 14px; border: none; cursor: pointer; font-size: 0.8rem; font-weight: 500;
    background: var(--bg); color: var(--text-secondary); transition: all 0.2s;
}
.view-btn.active { background: var(--accent); color: white; }

.section-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    gap: 12px;
}
.section-nav a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.2s;
    max-width: 45%;
}
.section-nav a:hover { background: var(--accent-light); border-color: var(--accent); }

/* Index */
.category { margin-bottom: 16px; }
.category-header {
    background: var(--accent);
    color: white;
    padding: 14px 18px;
    border-radius: var(--radius) var(--radius) 0 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}
.category-header:hover { opacity: 0.95; }
.category-header h2 { font-size: 1rem; font-weight: 600; }
.category-header .chevron { transition: transform 0.3s; font-size: 0.8rem; }
.category-header.collapsed .chevron { transform: rotate(-90deg); }
.category-items {
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    background: var(--bg-surface);
    overflow: hidden;
}
.category-items.hidden { display: none; }
.section-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 18px;
    text-decoration: none;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}
.section-link:last-child { border-bottom: none; }
.section-link:hover { background: var(--accent-light); }
.section-link .link-title { font-size: 0.9rem; font-weight: 500; }
.sub-link { padding-left: 36px; }
.sub-link .link-title { font-weight: 400; }
.badge {
    font-size: 0.7rem; padding: 2px 8px; border-radius: 4px;
    background: var(--badge-bg); color: var(--badge-text); font-weight: 600;
}


@media (max-width: 480px) {
    .para-arabic { font-size: 1.5rem; }
    .para-english { font-size: 0.95rem; }
    .container { padding: 16px; }
    .page-header .arabic-title { font-size: 1.6rem; }
}
@media (min-width: 481px) and (max-width: 768px) {
    .para-arabic { font-size: 1.7rem; }
    .para-english { font-size: 1rem; }
}

.placeholder {
    text-align: center; padding: 48px 20px;
    color: var(--text-secondary); font-style: italic;
}