:root {
  /* ── Color Palette ── */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2235;
  --bg-card-hover: #1f2a40;
  --bg-glass: rgba(26, 34, 53, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(168, 139, 82, 0.3);

  --text-primary: #e8e0d4;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-arabic: #f5eedf;

  --accent-gold: #c9a84c;
  --accent-gold-light: #e6cb6b;
  --accent-gold-dim: rgba(201, 168, 76, 0.15);
  --accent-emerald: #10b981;
  --accent-emerald-dim: rgba(16, 185, 129, 0.12);
  --accent-blue: #60a5fa;
  --accent-blue-dim: rgba(96, 165, 250, 0.12);
  --accent-rose: #f472b6;
  --accent-rose-dim: rgba(244, 114, 182, 0.12);

  /* ── Typography ── */
  --font-ui: 'Inter', -apple-system, sans-serif;
  --font-arabic: 'Amiri', 'Traditional Arabic', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* ── Spacing ── */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(201, 168, 76, 0.08);
}

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

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

body {
  font-family: var(--font-ui);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Islamic Pattern Background ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(201, 168, 76, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 2rem;
}

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

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.logo h1 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.logo h1 span {
  color: var(--accent-gold);
}

/* ── Selectors ── */
.selector-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.selector-group {
  position: relative;
}

.selector-group label {
  position: absolute;
  top: -8px;
  left: 12px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
  background: var(--bg-glass);
  padding: 0 4px;
  z-index: 1;
}

select, .verse-input {
  appearance: none;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  padding: 0.6rem 2rem 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-width: 180px;
}

select:focus, .verse-input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

.selector-group::after {
  content: '▾';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.7rem;
  pointer-events: none;
}

.verse-input {
  width: 80px;
  text-align: center;
}

.btn-analyze {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
  color: #0a0e17;
  border: none;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
}

.btn-analyze:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.25);
}

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

/* ── Main Content ── */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

/* ── Welcome State ── */
.welcome {
  text-align: center;
  padding: 6rem 2rem;
}

.welcome h2 {
  font-family: var(--font-arabic);
  font-size: 2.5rem;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.welcome p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto 2rem;
}

.welcome-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s;
}

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

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.feature-card h3 {
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.feature-card p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── Verse Display ── */
.verse-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.verse-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-emerald), var(--accent-gold));
}

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

.verse-ref {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.verse-badge {
  background: var(--accent-gold-dim);
  color: var(--accent-gold);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
}

.verse-surah-name {
  font-size: 1.1rem;
  font-weight: 600;
}

.verse-nav {
  display: flex;
  gap: 0.5rem;
}

.verse-nav button {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.verse-nav button:hover {
  background: var(--accent-gold-dim);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.verse-arabic {
  font-family: var(--font-arabic);
  font-size: 2rem;
  line-height: 2.2;
  color: var(--text-arabic);
  text-align: right;
  direction: rtl;
  margin-bottom: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.verse-english {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
}

/* ── AI Analysis Section ── */
.ai-section {
  margin-bottom: 2rem;
}

.btn-ai {
  width: 100%;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  border: 1px solid var(--border-accent);
  color: var(--text-primary);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn-ai::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 168, 76, 0.08), rgba(16, 185, 129, 0.08));
  opacity: 0;
  transition: opacity 0.3s;
}

.btn-ai:hover::before { opacity: 1; }

.btn-ai:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 0 30px rgba(201, 168, 76, 0.12);
  transform: translateY(-1px);
}

.btn-ai:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

.btn-ai .ai-icon { font-size: 1.3rem; }

.btn-ai .ai-model {
  background: var(--accent-emerald-dim);
  color: var(--accent-emerald);
  padding: 0.15rem 0.5rem;
  border-radius: 8px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.ai-panel {
  margin-top: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  box-shadow: var(--shadow-card);
  position: relative;
}

.ai-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-emerald), var(--accent-gold), var(--accent-blue));
}

.ai-streaming {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.ai-content {
  font-size: 1rem;
  line-height: 2;
  color: var(--text-primary);
  direction: rtl;
  text-align: right;
  font-family: var(--font-arabic);
}

.root-occ { margin-top: 0.75rem; }
.occ-loading, .occ-error {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}
.occ-error { color: var(--accent-rose, #e57373); }
.occ-title {
  font-size: 0.85rem;
  color: var(--accent-emerald);
  margin-bottom: 0.5rem;
  direction: rtl;
  text-align: right;
}
.occ-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 360px;
  overflow-y: auto;
}
.occ-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.6rem;
  align-items: start;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border, rgba(255,255,255,0.08));
  border-radius: 8px;
  background: rgba(255,255,255,0.02);
  cursor: pointer;
  transition: background 0.15s;
}
.occ-item:hover { background: rgba(255,255,255,0.06); }
.occ-ar {
  font-family: var(--font-arabic);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-primary);
  direction: rtl;
  text-align: right;
}
.occ-en {
  grid-column: 2;
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.occ-item .verse-badge { grid-row: span 2; align-self: center; }

.ai-reasoning {
  margin: 0 0 1rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border, rgba(255,255,255,0.1));
  border-radius: 8px;
  background: rgba(255,255,255,0.03);
}
.ai-reasoning summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-muted);
  user-select: none;
}
.ai-reasoning-body {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-secondary);
  opacity: 0.85;
}

.ai-content h2 { font-size: 1.3rem; color: var(--accent-gold); margin: 1.5rem 0 0.5rem; }
.ai-content h3 { font-size: 1.15rem; color: var(--accent-gold-light); margin: 1.25rem 0 0.5rem; }
.ai-content h4 { font-size: 1.05rem; color: var(--accent-emerald); margin: 1rem 0 0.4rem; }
.ai-content strong { color: var(--accent-gold-light); }
.ai-content em { color: var(--text-secondary); }
.ai-content code {
  background: rgba(255,255,255,0.06);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-arabic);
  font-size: 1.05em;
  color: var(--accent-gold-light);
}
.ai-content ul {
  padding-right: 1.5rem;
  padding-left: 0;
  margin: 0.5rem 0;
}
.ai-content li {
  margin: 0.3rem 0;
  color: var(--text-secondary);
}
.ai-content li::marker {
  color: var(--accent-emerald);
}
.ai-content p {
  margin: 0.5rem 0;
}

.ai-cursor {
  color: var(--accent-gold);
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.ai-error {
  color: var(--accent-rose);
  font-size: 0.85rem;
  padding: 0.5rem;
}

.ai-error code {
  background: rgba(244, 114, 182, 0.12);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* ── Root Analysis Section ── */
.analysis-section {
  margin-bottom: 2rem;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.section-title h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.section-title .badge {
  background: var(--accent-emerald-dim);
  color: var(--accent-emerald);
  padding: 0.15rem 0.6rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
}

/* ── Word Cards ── */
.word-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.word-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
  cursor: pointer;
}

.word-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.word-card.expanded {
  grid-column: 1 / -1;
  border-color: var(--accent-gold);
}

.word-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  gap: 1rem;
}

.word-arabic-side {
  text-align: right;
  flex-shrink: 0;
}

.word-arabic-main {
  font-family: var(--font-arabic);
  font-size: 1.6rem;
  color: var(--accent-gold-light);
}

.word-translation {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

.word-root-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}

.root-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-emerald-dim);
  color: var(--accent-emerald);
  padding: 0.2rem 0.65rem;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-arabic);
}

.root-tag .icon { font-size: 0.65rem; }

.word-stats {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.no-root-tag {
  background: rgba(107, 114, 128, 0.15);
  color: var(--text-muted);
}

/* ── Expanded Word Details ── */
.word-card-body {
  display: none;
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.word-card.expanded .word-card-body {
  display: block;
}

.derived-words-title {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin: 1rem 0 0.5rem;
  font-weight: 600;
}

.derived-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.derived-chip {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.6rem;
  border-radius: 16px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.derived-chip .ar {
  font-family: var(--font-arabic);
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-left: 0.3rem;
}

.derived-chip:hover {
  background: var(--accent-gold-dim);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* ── Cross References ── */
.crossref-section {
  margin-top: 1rem;
}

.crossref-title {
  font-size: 0.78rem;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.crossref-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.crossref-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.65rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.2s;
}

.crossref-item:hover {
  background: var(--accent-blue-dim);
}

.crossref-ref {
  color: var(--accent-blue);
  font-weight: 600;
  white-space: nowrap;
}

.crossref-text {
  color: var(--text-muted);
  font-family: var(--font-arabic);
  font-size: 0.85rem;
  direction: rtl;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* ── Summary Stats ── */
.stats-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  flex: 1;
  min-width: 140px;
  text-align: center;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.15rem;
}

/* ── Loading ── */
.loading {
  text-align: center;
  padding: 4rem;
  color: var(--text-muted);
}

.loading .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ── */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; }
  .selector-row { flex-wrap: wrap; justify-content: center; }
  .verse-panel { padding: 1.5rem; }
  .verse-arabic { font-size: 1.5rem; }
  .word-cards { grid-template-columns: 1fr; }
  .welcome-features { grid-template-columns: 1fr; }
  .stats-row { flex-direction: column; }
  select { min-width: 140px; }
}

/* ── Search Section ── */
.search-section {
  max-width: 650px;
  margin: 2rem auto 0;
}

.search-bar {
  display: flex;
  gap: 0.5rem;
}

.search-input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-arabic);
  font-size: 1rem;
  direction: rtl;
  text-align: right;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-dim);
}

.search-input::placeholder {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.btn-search {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
  color: #0a0e17;
  border: none;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.15s, box-shadow 0.2s;
}

.btn-search:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.25);
}

.search-results-header {
  font-size: 0.9rem;
  color: var(--accent-gold);
  margin: 1.5rem 0 0.75rem;
  font-weight: 600;
  direction: rtl;
  text-align: right;
}

.search-results-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.search-result-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
}

.search-result-card:hover {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.search-result-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.search-result-surah {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.search-score {
  margin-left: auto;
  background: var(--accent-emerald-dim);
  color: var(--accent-emerald);
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
}

.search-result-arabic {
  font-family: var(--font-arabic);
  font-size: 1.15rem;
  color: var(--text-arabic);
  direction: rtl;
  text-align: right;
  line-height: 1.9;
  margin-bottom: 0.3rem;
}

.search-result-english {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.5;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--bg-card-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }