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

body {
  font-family: var(--font-body);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.68;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography Đa Ngữ */
.han-script {
  font-family: var(--font-han);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* Scrollbar Thiền Môn */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-app);
}
::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gold-pure);
}

/* Header Hoàng Gia */
.noble-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-gold);
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.wheel-icon {
  width: 46px;
  height: 46px;
  color: var(--gold-pure);
  filter: drop-shadow(0 2px 10px rgba(212, 175, 55, 0.4));
  animation: gentle-spin 120s linear infinite;
  flex-shrink: 0;
}

@keyframes gentle-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.brand-text h1 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-text .pali-sub {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--saffron-600);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.bell-btn {
  background: var(--gold-gradient);
  color: var(--on-accent);
  border: none;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 3px 12px rgba(212, 175, 55, 0.35);
}

.bell-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(212, 175, 55, 0.5);
}

.bell-btn:active {
  transform: translateY(0);
}

.theme-selector {
  display: flex;
  align-items: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 3px;
}

.theme-btn {
  background: transparent;
  border: none;
  padding: 6px 11px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-smooth);
}

.theme-btn.active {
  background: var(--bg-surface);
  color: var(--gold-dark);
  font-weight: 700;
  box-shadow: 0 1px 5px rgba(0,0,0,0.1);
}

/* Primary Tabs Navigation Bar */
.noble-nav-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  display: flex;
  align-items: stretch;
}
.noble-nav-bar::-webkit-scrollbar {
  display: none;
}

/* Nav Scroll Indicators */
.nav-scroll-btn {
  position: relative;
  z-index: 5;
  background: var(--bg-surface);
  border: none;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--gold-dark);
  font-size: 1.6rem;
  font-weight: 700;
  padding: 0 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: var(--transition-smooth);
  flex-shrink: 0;
}
.nav-scroll-btn:hover {
  color: var(--saffron-600);
  background: var(--saffron-50);
}
[data-theme="night"] .nav-scroll-btn:hover {
  background: rgba(212, 175, 55, 0.1);
}

.nav-scroll-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  pointer-events: none;
  z-index: 4;
}
.nav-fade-right {
  right: 44px;
  background: linear-gradient(90deg, transparent, var(--bg-surface));
}
.nav-fade-left {
  left: 44px;
  background: linear-gradient(-90deg, transparent, var(--bg-surface));
}
[data-theme="night"] .nav-fade-right {
  background: linear-gradient(90deg, transparent, var(--bg-surface));
}
[data-theme="night"] .nav-fade-left {
  background: linear-gradient(-90deg, transparent, var(--bg-surface));
}

.nav-tabs-container {
  overflow-x: auto;
  scrollbar-width: none;
  scroll-behavior: smooth;
}
.nav-tabs-container::-webkit-scrollbar {
  display: none;
}

.nav-tabs-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  padding: 0 1rem;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
}

.nav-tab {
  padding: 0.9rem 1.15rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-secondary);
  font-size: 0.91rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.nav-tab:hover {
  color: var(--saffron-600);
  background: var(--saffron-50);
}
[data-theme="night"] .nav-tab:hover {
  background: rgba(212, 175, 55, 0.1);
}

.nav-tab.active {
  color: var(--saffron-600);
  border-bottom-color: var(--gold-pure);
  font-weight: 600;
}

.tab-badge {
  font-size: 0.875rem;
  padding: 2px 7px;
  border-radius: 10px;
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
}
.nav-tab.active .tab-badge {
  background: var(--saffron-100);
  color: var(--saffron-800);
}
[data-theme="night"] .nav-tab.active .tab-badge {
  background: var(--saffron-700);
  color: #FFF;
}

/* Main Container Layout */
.main-wrapper {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 1.75rem 1.5rem 3.5rem;
  flex: 1;
}

/* Hero Grand Banner */
.dhamma-hero {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-elevated) 100%);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: padding 0.35s ease, margin 0.35s ease;
}

/* Compact Hero (when not on first tab) */
.dhamma-hero.hero-compact {
  padding: 1rem 2.25rem;
  margin-bottom: 1.25rem;
}
.dhamma-hero.hero-compact .hero-pill {
  margin-bottom: 0;
}
.dhamma-hero.hero-compact .hero-title {
  font-size: 1.5rem;
  margin-bottom: 0;
}
.dhamma-hero.hero-compact .hero-desc,
.dhamma-hero.hero-compact .hero-stats-row {
  display: none;
}
.dhamma-hero.hero-compact::before {
  display: none;
}

.dhamma-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  background: var(--saffron-100);
  color: var(--saffron-800);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
  border: 1px solid rgba(212, 175, 55, 0.35);
}
[data-theme="night"] .hero-pill {
  background: rgba(212, 175, 55, 0.2);
  color: var(--gold-light);
}

.hero-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.hero-title span {
  color: var(--saffron-600);
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 880px;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.hero-stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.hero-stat-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--gold-dark);
}
[data-theme="night"] .stat-num {
  color: var(--gold-pure);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

/* Global Search & Filter Bar */
.search-filter-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.search-input-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 20px;
  height: 20px;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.95rem 1.25rem 0.95rem 3.2rem;
  font-size: 1.0rem;
  font-family: var(--font-body);
  background: var(--bg-surface);
  border: 1.5px solid var(--border-gold);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.search-input:focus {
  border-color: var(--gold-pure);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.15);
}

.filter-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.filter-tag {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-tag:hover {
  border-color: var(--gold-pure);
  color: var(--saffron-600);
}

.filter-tag.active {
  background: var(--gold-gradient);
  border-color: var(--gold-pure);
  color: var(--on-accent);
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3);
}

/* 62 BỘ KINH ĐẠI THỪA GRID */
.daithua-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.daithua-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.daithua-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-pure);
  box-shadow: var(--shadow-hover);
}

.daithua-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--zen-purple);
}

.card-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.taisho-badge {
  font-family: monospace;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--zen-blue-light);
  color: var(--zen-blue);
  border: 1px solid rgba(3, 105, 161, 0.2);
}

.cat-badge {
  font-size: 0.875rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: var(--zen-purple-light);
  color: var(--zen-purple);
}

.daithua-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 0.3rem;
}

.daithua-han {
  font-family: var(--font-han);
  font-size: 1.0rem;
  color: var(--saffron-700);
  margin-bottom: 0.75rem;
}
[data-theme="night"] .daithua-han {
  color: var(--gold-light);
}

.daithua-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.35rem;
}

.daithua-action-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn-read-viet {
  flex: 1;
  background: var(--gold-gradient);
  color: var(--on-accent);
  border: none;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}
.btn-read-viet:hover {
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
}

.btn-read-han {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.btn-read-han:hover {
  border-color: var(--gold-pure);
  color: var(--saffron-600);
}

.btn-file-pdf {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: var(--transition-smooth);
}
.btn-file-pdf:hover {
  color: #E11D48;
  border-color: #E11D48;
}

/* ĐẠI TẠNG KINH HÁN (25 BỘ) */
.daitang-divisions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.division-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.division-card:hover {
  border-color: var(--gold-pure);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.division-card.active {
  border-color: var(--gold-pure);
  background: var(--saffron-50);
}
[data-theme="night"] .division-card.active {
  background: rgba(212, 175, 55, 0.15);
}

.div-code-badge {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gold-dark);
}
[data-theme="night"] .div-code-badge {
  color: var(--gold-pure);
}

.div-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.div-name span {
  font-family: var(--font-han);
  font-size: 0.95rem;
  font-weight: normal;
  color: var(--text-muted);
}

.div-stats {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Taisho Texts Items */
.taisho-texts-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.taisho-text-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: var(--transition-smooth);
}

.taisho-text-item:hover {
  border-color: var(--gold-pure);
  box-shadow: var(--shadow-soft);
}

.taisho-left {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.taisho-badge {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--gold-light);
  color: var(--primary-accent);
  border: 1px solid var(--border-gold);
  letter-spacing: 0.03em;
  white-space: nowrap;
  flex-shrink: 0;
}

[data-theme="night"] .taisho-badge {
  background: rgba(217, 119, 6, 0.15);
  color: #FCD34D;
  border-color: rgba(217, 119, 6, 0.3);
}

.taisho-title-container {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.taisho-viet-title {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.taisho-han-sub {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  font-family: var(--font-han);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.taisho-title-text {
  font-family: var(--font-han);
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nikaya-badge {
  display: inline-block;
  font-size: 0.875rem;
  padding: 3px 9px;
  border-radius: 4px;
  background: var(--zen-emerald-light);
  color: var(--zen-emerald);
  font-weight: 600;
}
[data-theme="night"] .nikaya-badge {
  background: rgba(30, 58, 47, 0.5);
  color: #86EFAC;
}

.pagination-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

/* PHỤ LỤC MINH TRIẾT VIEW */
.appendix-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.appendix-nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.appendix-pill-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.appendix-pill-btn:hover {
  color: var(--gold-dark);
  border-color: var(--gold-pure);
}

.appendix-pill-btn.active {
  background: var(--gold-gradient);
  color: var(--on-accent);
  border-color: var(--gold-pure);
  box-shadow: 0 3px 10px rgba(212, 175, 55, 0.3);
}

.appendix-card-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-soft);
}

.appendix-heading {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--gold-pure);
}

.appendix-intro {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

/* Bảng Đối Chiếu A-Hàm / Nikāya */
.comparison-table-wrapper {
  overflow-x: auto;
  margin-bottom: 2rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.comparison-table th, 
.comparison-table td {
  border: 1px solid var(--border-subtle);
  padding: 0.9rem 1.15rem;
  text-align: left;
}

.comparison-table th {
  background: var(--bg-surface-elevated);
  color: var(--gold-dark);
  font-family: var(--font-serif);
  font-weight: 700;
}
[data-theme="night"] .comparison-table th {
  color: var(--gold-light);
}

.comparison-table tr:hover {
  background: var(--bg-surface-elevated);
}

/* Thập Nhị Phân Giáo Grid */
.twelve-genres-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.genre-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  position: relative;
  transition: var(--transition-smooth);
}

.genre-card:hover {
  border-color: var(--gold-pure);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.genre-code-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gold-pure);
}

.genre-title {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.genre-pali {
  font-size: 0.875rem;
  color: var(--saffron-600);
  font-style: italic;
  margin-bottom: 0.75rem;
}

.genre-def {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0.85rem;
}

.genre-examples {
  font-size: 0.875rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 0.65rem;
}

/* 25 Bộ Tree Card */
.tree-group-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.tree-group-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--gold-dark);
  font-weight: 700;
  margin-bottom: 1rem;
}
[data-theme="night"] .tree-group-title {
  color: var(--gold-light);
}

.tree-divisions-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.tree-div-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
}

.tree-div-item strong {
  color: var(--text-primary);
  font-size: 0.95rem;
}

.tree-div-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Accordion & Questions View (Milinda & 218 Practical QA) */
.qa-list-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.qa-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}

.qa-card:hover {
  border-color: var(--gold-pure);
  box-shadow: var(--shadow-hover);
}

.qa-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.qa-title-wrap {
  display: flex;
  min-width: 0;
  overflow-wrap: anywhere;
  align-items: baseline;
  gap: 0.75rem;
}

.qa-index {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-pure);
  min-width: 2.2rem;
}

.qa-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
}

.qa-tag {
  font-size: 0.875rem;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  white-space: normal;
  overflow-wrap: anywhere;
  flex-shrink: 0;
  max-width: 100%;
}

.qa-body {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border-subtle);
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Lộ Trình Tu Tập (Practice Roadmap) */
.roadmap-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.roadmap-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.5rem;
  align-items: flex-start;
}

.step-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.marker-circle {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-full);
  background: var(--gold-gradient);
  color: var(--on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.35);
}

.marker-line {
  width: 3px;
  height: 100%;
  background: var(--border-subtle);
  margin-top: 0.75rem;
}

.step-content {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
}

.step-content h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.step-content .step-subtitle {
  color: var(--saffron-600);
  font-weight: 600;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

/* Từ Điển Pāḷi Grid */
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.glossary-card {
  min-width: 0;
  overflow-wrap: anywhere;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
}

.glossary-card:hover {
  border-color: var(--gold-pure);
  transform: translateY(-2px);
}

.glossary-term {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold-pure);
  margin-bottom: 0.25rem;
}

.glossary-viet {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.glossary-cat {
  display: inline-block;
  font-size: 0.875rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--saffron-100);
  color: var(--saffron-800);
  margin-bottom: 0.75rem;
}
[data-theme="night"] .glossary-cat {
  background: rgba(212, 175, 55, 0.2);
  color: var(--gold-light);
}

.glossary-def {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.glossary-note {
  background: var(--bg-surface-elevated);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
  border-left: 3px solid var(--gold-pure);
}

/* Đồng Hồ Tọa Thiền Chuyên Biệt */
.timer-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  box-shadow: var(--shadow-soft);
}

.breathing-circle-outer {
  width: 240px;
  height: 240px;
  margin: 0 auto 2rem;
  border-radius: var(--radius-full);
  border: 3px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: radial-gradient(circle, var(--bg-surface-elevated) 0%, transparent 70%);
  transition: all 4s ease-in-out;
}

.breathing-circle-outer.breathing {
  animation: breath-pulse 16s infinite ease-in-out;
}

@keyframes breath-pulse {
  0%, 100% { transform: scale(1); border-color: var(--border-gold); }
  25% { transform: scale(1.1); border-color: var(--gold-pure); box-shadow: var(--gold-glow); }
  50% { transform: scale(1.1); border-color: var(--gold-dark); }
  75% { transform: scale(0.95); border-color: var(--border-subtle); }
}

.timer-digits {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.timer-preset-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.preset-btn {
  min-height: 44px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.preset-btn.active {
  background: var(--gold-gradient);
  border-color: var(--gold-pure);
  color: var(--on-accent);
}

.timer-controls-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn-timer-action {
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  font-size: 1.0rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
  border: none;
}

.btn-start {
  background: var(--gold-gradient);
  color: var(--on-accent);
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.4);
}
.btn-start:hover {
  transform: translateY(-2px);
}

.btn-pause {
  background: #E11D48;
  color: #FFF;
}

.btn-reset {
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* Sổ Tay Tu Học & Ghi Chép */
.notes-container {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
}

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

.note-editor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
}
.form-input:focus {
  border-color: var(--gold-pure);
}

.form-textarea {
  min-height: 180px;
  resize: vertical;
}

.notes-history-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.note-item-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.note-item-card h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.note-date {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.note-content {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: pre-wrap;
}

.btn-del-note {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}
.btn-del-note:hover {
  color: #E11D48;
}

/* Modal Popup */
.noble-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(5px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.noble-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.noble-modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 45px rgba(0,0,0,0.35);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.25s ease;
}

.noble-modal-backdrop.open .noble-modal-content {
  transform: translateY(0);
}

.modal-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text-primary);
}

.btn-close-modal {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* Footer Trang Nghiêm */
.noble-footer {
  margin-top: auto;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-gold);
  padding: 2.5rem 1.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-quote {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gold-dark);
  font-size: 1.1rem;
  max-width: 720px;
  margin: 0 auto 1rem;
}
[data-theme="night"] .footer-quote {
  color: var(--gold-light);
}

/* Skeleton Loading */
.skeleton-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  min-height: 200px;
  position: relative;
  overflow: hidden;
}
.skeleton-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.08) 50%, transparent 100%);
  animation: skeleton-shimmer 1.8s infinite;
}
@keyframes skeleton-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
.skeleton-line {
  height: 1rem;
  background: var(--bg-surface-elevated);
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.skeleton-line.w75 { width: 75%; }
.skeleton-line.w50 { width: 50%; }
.skeleton-line.w90 { width: 90%; }

/* Focus & Accessibility */
:focus-visible {
  outline: 2px solid var(--gold-pure);
  outline-offset: 2px;
}
.nav-tab:focus-visible,
.filter-tag:focus-visible,
.tri-tab-btn:focus-visible {
  outline: 2px solid var(--gold-pure);
  outline-offset: -2px;
}
button:focus:not(:focus-visible) { outline: none; }

/* Screen reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Hide on mobile/small helpers */
.hide-on-mobile { }
.hide-on-small { }

/* Bookmark button active state */
.reader-bookmark-btn.bookmarked {
  color: var(--gold-pure);
  text-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
  font-size: 1.1rem;
}

/* Responsive: 1024px (Tablet) */
@media (max-width: 1024px) {
  .hero-stats-row {
    gap: 0.85rem;
  }
  .hero-stat-card {
    padding: 0.6rem 1rem;
  }
  .daithua-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  .daitang-divisions-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  .twelve-genres-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  .timer-controls-row {
    flex-wrap: wrap;
  }
}

/* Responsive: 768px (Mobile) */
@media (max-width: 768px) {
  .header-container {
    padding: 0.75rem 1rem;
  }
  .brand-text h1 {
    font-size: 1.15rem;
  }
  .hero-title {
    font-size: 1.5rem;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .hero-stats-row {
    gap: 0.65rem;
  }
  .hero-stat-card {
    padding: 0.5rem 0.85rem;
    gap: 0.5rem;
  }
  .stat-num {
    font-size: 1.35rem;
  }
  .stat-label {
    font-size: 0.875rem;
  }
  .daithua-grid {
    grid-template-columns: 1fr;
  }
  .roadmap-step {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .step-marker {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
  }
  .marker-line {
    display: none;
  }
  .taisho-text-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .filter-tags-row {
    gap: 0.35rem;
  }
  .filter-tag {
    padding: 0.35rem 0.75rem;
    font-size: 0.875rem;
  }
  .hide-on-mobile {
    display: none !important;
  }
  .nav-scroll-btn {
    padding: 0 0.5rem;
  }
  .nav-scroll-fade {
    width: 35px;
  }
  .nav-fade-right { right: 32px; }
  .nav-fade-left { left: 32px; }
  .main-wrapper {
    padding: 1.25rem 1rem 2.5rem;
  }
  .timer-controls-row {
    flex-direction: column;
    align-items: center;
  }
  .btn-timer-action {
    width: 100%;
    justify-content: center;
  }
  .glossary-grid {
    grid-template-columns: 1fr;
  }
}

/* Responsive: 480px (Small Mobile) */
@media (max-width: 480px) {
  .dhamma-hero {
    padding: 1.5rem 1.15rem;
  }
  .hero-title {
    font-size: 1.3rem;
  }
  .hero-stats-row {
    flex-direction: column;
  }
  .hero-stat-card {
    width: 100%;
  }
  .header-actions {
    gap: 0.35rem;
  }
  .bell-btn span {
    display: none;
  }
  .theme-btn {
    padding: 5px 8px;
    font-size: 0.875rem;
  }
  .hide-on-small {
    display: none !important;
  }
  .search-input {
    font-size: 0.9rem;
    padding: 0.75rem 1rem 0.75rem 2.8rem;
  }
  .daithua-title {
    font-size: 1.1rem;
  }
  .modal-body {
    padding: 1.25rem;
  }
  .noble-modal-content {
    max-height: 90vh;
  }
}