/* ==========================================================================
   Shi Shu Wu Jing (四书五经) - 100 Canonical Verses Stylesheet
   Modern East Asian Aesthetics, High Contrast Dark/Light Modes,
   Responsive Layout, RTL Support, AdSense & SEO Optimization
   ========================================================================== */

:root {
  /* Color Palette - Light (Imperial Parchment & Vermilion) */
  --bg-primary: #fbf9f4;
  --bg-secondary: #f4ede2;
  --bg-card: #ffffff;
  --bg-elevated: #ffffff;
  --border-color: #e5dccf;
  --border-accent: #d4c5b3;

  --text-primary: #1c1917;
  --text-secondary: #57534e;
  --text-muted: #78716c;
  --text-chinese: #1f2937;

  --accent-vermilion: #b91c1c;
  --accent-vermilion-hover: #991b1b;
  --accent-vermilion-soft: #fef2f2;
  --accent-gold: #b45309;
  --accent-gold-soft: #fef3c7;
  --accent-jade: #047857;
  --accent-jade-soft: #ecfdf5;

  --seal-color: #b91c1c;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;

  --font-serif: 'Cinzel', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-chinese: 'Noto Serif SC', 'Songti SC', 'SimSun', STSong, serif;
}

[data-theme="dark"] {
  /* Color Palette - Dark (Lacquer Ebony & Gilded Gold) */
  --bg-primary: #0f0f11;
  --bg-secondary: #17171a;
  --bg-card: #1c1c20;
  --bg-elevated: #242429;
  --border-color: #2e2e36;
  --border-accent: #40404c;

  --text-primary: #f5f5f4;
  --text-secondary: #d6d3d1;
  --text-muted: #a8a29e;
  --text-chinese: #fafaf9;

  --accent-vermilion: #ef4444;
  --accent-vermilion-hover: #dc2626;
  --accent-vermilion-soft: #2a1515;
  --accent-gold: #f59e0b;
  --accent-gold-soft: #2d2212;
  --accent-jade: #10b981;
  --accent-jade-soft: #064e3b;

  --seal-color: #ef4444;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
}

/* RTL Support for Arabic */
[dir="rtl"] {
  direction: rtl;
  text-align: right;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Tahoma, Arial, sans-serif;
}

[dir="rtl"] .logo-text,
[dir="rtl"] .breadcrumb,
[dir="rtl"] .verse-navigation {
  direction: rtl;
  text-align: right;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.logo-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--seal-color);
  color: #ffffff;
  font-family: var(--font-chinese);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  box-shadow: 0 2px 4px rgba(185, 28, 28, 0.3);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text .title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  color: var(--text-primary);
}

.logo-text .subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-selector-wrapper {
  position: relative;
}

.lang-select {
  padding: 0.4rem 0.75rem;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.lang-select:focus {
  border-color: var(--accent-vermilion);
}

.icon-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  font-size: 1.05rem;
  cursor: pointer;
  color: var(--text-primary);
  transition: background-color var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--border-color);
}

/* ==========================================================================
   AdSense Placement Containers (Valuable Inventory Compliant)
   ========================================================================== */

.ad-container {
  max-width: 1200px;
  margin: 1.25rem auto;
  padding: 0.5rem;
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.ad-badge {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

.ad-top {
  margin-top: 1rem;
}

.ad-in-article {
  margin: 2rem 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.ad-bottom {
  margin-bottom: 2rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 3.5rem 1.25rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-seal-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-chinese);
  font-size: 18rem;
  color: var(--seal-color);
  opacity: 0.03;
  pointer-events: none;
  font-weight: 700;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background-color: var(--accent-vermilion-soft);
  color: var(--accent-vermilion);
  border: 1px solid rgba(185, 28, 28, 0.2);
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  letter-spacing: 0.5px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.hero-title span {
  color: var(--accent-vermilion);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* Search & Filters Container */
.search-filter-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-md);
  margin-top: 1.5rem;
}

.search-input-wrapper {
  position: relative;
  margin-bottom: 1rem;
}

.search-input {
  width: 100%;
  padding: 0.9rem 1.2rem 0.9rem 2.8rem;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

[dir="rtl"] .search-input {
  padding: 0.9rem 2.8rem 0.9rem 1.2rem;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--text-muted);
}

[dir="rtl"] .search-icon {
  left: auto;
  right: 1rem;
}

.search-input:focus {
  border-color: var(--accent-vermilion);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.1);
}

/* Category Filter Pills */
.filter-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.filter-pill {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover,
.filter-pill.active {
  background: var(--accent-vermilion);
  color: #ffffff;
  border-color: var(--accent-vermilion);
}

/* Theme Filter Tags */
.theme-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.85rem;
}

.theme-label {
  color: var(--text-muted);
  font-weight: 600;
  margin-right: 0.3rem;
}

[dir="rtl"] .theme-label {
  margin-right: 0;
  margin-left: 0.3rem;
}

.theme-tag {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-tag:hover,
.theme-tag.active {
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
  font-weight: 600;
}

/* ==========================================================================
   Featured Verse (Ayat Hari Ini)
   ========================================================================== */

.featured-section {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.25rem;
}

.featured-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 5px solid var(--accent-vermilion);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

[dir="rtl"] .featured-card {
  border-left: 1px solid var(--border-color);
  border-right: 5px solid var(--accent-vermilion);
}

.featured-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.featured-title-badge {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-vermilion);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.featured-hanzi {
  font-family: var(--font-chinese);
  font-size: 1.85rem;
  color: var(--text-chinese);
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.featured-pinyin {
  color: var(--accent-gold);
  font-style: italic;
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
}

.featured-translation {
  font-size: 1.05rem;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.featured-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.featured-source {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* ==========================================================================
   Catalog Grid (100 Verses)
   ========================================================================== */

.catalog-section {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.25rem;
}

.catalog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

.catalog-count {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.verses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

/* Verse Card Item */
.verse-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}

.verse-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-vermilion);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.verse-num-badge {
  background: var(--bg-secondary);
  color: var(--accent-gold);
  border: 1px solid var(--border-color);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.card-book-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.card-hanzi {
  font-family: var(--font-chinese);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-chinese);
  margin-bottom: 0.4rem;
  line-height: 1.45;
}

.card-pinyin {
  font-size: 0.82rem;
  color: var(--accent-gold);
  font-style: italic;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.card-meaning {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.tag-badge {
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 500;
}

.card-bottom-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
}

.read-more-link {
  color: var(--accent-vermilion);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap var(--transition-fast);
}

.read-more-link:hover {
  gap: 0.5rem;
  color: var(--accent-vermilion-hover);
}

.card-icons {
  display: flex;
  gap: 0.4rem;
}

.mini-icon-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.mini-icon-btn:hover {
  color: var(--accent-vermilion);
  border-color: var(--accent-vermilion);
  background: var(--accent-vermilion-soft);
}

.mini-icon-btn.active {
  color: var(--accent-vermilion);
  background: var(--accent-vermilion-soft);
  border-color: var(--accent-vermilion);
}

/* ==========================================================================
   Detail Article Page (/ayat/[id].html and article.html)
   ========================================================================== */

.detail-container {
  max-width: 900px;
  margin: 1.5rem auto 3rem;
  padding: 0 1.25rem;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--accent-vermilion);
}

.verse-article {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.verse-badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}

.book-badge {
  background: var(--accent-vermilion-soft);
  color: var(--accent-vermilion);
  border: 1px solid rgba(185, 28, 28, 0.2);
}

.chapter-badge {
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
  border: 1px solid rgba(180, 83, 9, 0.2);
}

.category-badge {
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.verse-hanzi {
  font-family: var(--font-chinese);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-chinese);
  line-height: 1.4;
  margin-bottom: 0.65rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.verse-pinyin {
  font-size: 1.15rem;
  color: var(--accent-gold);
  font-style: italic;
  margin-bottom: 1.5rem;
}

/* Toolbar Buttons */
.verse-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tool-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.tool-btn:hover {
  background: var(--accent-vermilion);
  color: #ffffff;
  border-color: var(--accent-vermilion);
}

/* Content Sections */
.content-section {
  margin-bottom: 2.25rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.translation-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.translation-text {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.translation-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  border-top: 1px dashed var(--border-accent);
  padding-top: 1rem;
}

.trans-tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.trans-tab-btn:hover,
.trans-tab-btn.active {
  background: var(--accent-vermilion);
  color: #ffffff;
  border-color: var(--accent-vermilion);
}

.section-body {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.guidance-box {
  background: var(--accent-jade-soft);
  border: 1px solid rgba(4, 120, 87, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  color: var(--text-primary);
}

.history-box {
  background: var(--accent-gold-soft);
  border: 1px solid rgba(180, 83, 9, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  color: var(--text-primary);
}

/* Quote Card Generator */
.quote-card-preview {
  background: linear-gradient(135deg, #1c1917 0%, #292524 100%);
  color: #f5f5f4;
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  margin-bottom: 1rem;
  position: relative;
  border: 2px solid #b45309;
}

.card-inner {
  max-width: 650px;
  margin: 0 auto;
}

.card-seal {
  display: inline-block;
  background-color: #b91c1c;
  color: #ffffff;
  font-family: var(--font-chinese);
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  letter-spacing: 2px;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.card-quote {
  font-family: var(--font-chinese);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.5;
  color: #fafaf9;
  margin-bottom: 0.6rem;
}

.card-pinyin {
  font-size: 0.95rem;
  color: #fbbf24;
  font-style: italic;
  margin-bottom: 1.2rem;
}

.card-divider {
  width: 60px;
  height: 2px;
  background: #b45309;
  margin: 1rem auto;
}

.card-translation {
  font-size: 1.05rem;
  color: #e7e5e4;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.card-source {
  font-size: 0.85rem;
  color: #a8a29e;
  font-weight: 600;
}

.card-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.primary-btn {
  background: var(--accent-vermilion);
  color: #ffffff;
  border: none;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.primary-btn:hover {
  background: var(--accent-vermilion-hover);
}

/* Prev / Next Navigation */
.verse-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-prev-btn,
.nav-next-btn,
.nav-center-btn {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-prev-btn,
.nav-next-btn {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.nav-prev-btn:hover,
.nav-next-btn:hover {
  background: var(--accent-vermilion);
  color: #ffffff;
  border-color: var(--accent-vermilion);
}

.nav-center-btn {
  background: transparent;
  color: var(--text-muted);
}

.nav-center-btn:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   Footer & Cookie Compliance Banner
   ========================================================================== */

.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 1.25rem 2rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-col h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-col p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--accent-vermilion);
}

.cookie-settings-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cookie-settings-btn:hover {
  background: var(--accent-vermilion);
  color: #ffffff;
  border-color: var(--accent-vermilion);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Toast Notification / Toast Popup
   ========================================================================== */

.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #1c1917;
  color: #ffffff;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideUp 0.3s ease forwards;
}

[dir="rtl"] .toast-notification {
  right: auto;
  left: 2rem;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 900px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .verse-article {
    padding: 1.5rem;
  }

  .verse-hanzi {
    font-size: 1.75rem;
  }
}

@media (max-width: 640px) {
  .header-container {
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    padding-top: 0.5rem;
    gap: 1rem;
    border-top: 1px solid var(--border-color);
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .verses-grid {
    grid-template-columns: 1fr;
  }

  .verse-navigation {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .ad-container,
  .verse-toolbar,
  .verse-navigation {
    display: none !important;
  }

  body {
    background: #ffffff !important;
    color: #000000 !important;
  }

  .verse-article {
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
  }
}