:root {
  /* Design Spec Colors */
  --primary: #1e3a5f;
  --secondary: #8b6914;
  --accent: #c9a84c;
  --bg: #faf8f5;
  --surface: #ffffff;
  --text: #2d2d2d;
  --muted: #6b7280;
  --border: #e5e2de;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Typography */
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Transition */
  --ease: 150ms ease;
}

[data-theme="dark"] {
  --bg: #1a1a2e;
  --surface: #242440;
  --text: #e8e6e3;
  --muted: #9ca3af;
  --border: #3a3a5c;
  --primary: #4a7ab5;
  --secondary: #c9a84c;
  --accent: #dfc06a;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

/* Header */
.header {
  background: var(--primary);
  color: #fff;
  padding: var(--space-md) var(--space-lg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.header h1 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.header h1 small {
  display: block;
  font-size: 0.85rem;
  font-weight: 400;
  opacity: 0.8;
  margin-top: 2px;
}

.header-controls {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-shrink: 0;
}

.toggle-btn {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: var(--font-body);
  transition: background var(--ease);
  white-space: nowrap;
}

.toggle-btn:hover {
  background: rgba(255,255,255,0.25);
}

.toggle-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Main */
.main {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* Search Section */
.search-section {
  margin-bottom: var(--space-xl);
}

.search-box {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.search-input {
  flex: 1;
  height: 48px;
  padding: 0 var(--space-md);
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--ease);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
}

.search-input::placeholder {
  color: var(--muted);
}

.search-btn {
  height: 48px;
  padding: 0 20px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background var(--ease), transform var(--ease);
  white-space: nowrap;
}

.search-btn:hover {
  background: #15304f;
}

[data-theme="dark"] .search-btn:hover {
  background: #5a8ac5;
}

.search-btn:active {
  transform: scale(0.97);
}

.search-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Filters */
.filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.filter-select {
  height: 36px;
  padding: 0 var(--space-sm);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color var(--ease);
  max-width: 220px;
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary);
}

/* Stats bar */
.stats-bar {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-xl);
  font-size: 0.85rem;
  color: var(--muted);
}

.stat-item strong {
  color: var(--text);
  font-weight: 600;
}

/* Results */
.results-header {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--text);
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  transition: transform var(--ease), box-shadow var(--ease);
  animation: fadeIn 200ms ease-out;
}

.result-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.series-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.testament-badge {
  display: inline-block;
  background: var(--secondary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 3px;
}

.book-ref {
  font-size: 0.9rem;
  color: var(--muted);
  font-family: var(--font-body);
}

.result-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text);
  margin-top: var(--space-sm);
}

.result-text mark {
  background: rgba(201, 168, 76, 0.25);
  color: inherit;
  padding: 1px 2px;
  border-radius: 2px;
}

.result-score {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: var(--space-sm);
  text-align: right;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.empty-state h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.empty-state p {
  color: var(--muted);
  margin-bottom: var(--space-lg);
  font-size: 0.95rem;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.suggestion-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--primary);
  cursor: pointer;
  transition: background var(--ease), border-color var(--ease);
  font-family: var(--font-body);
}

.suggestion-chip:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* No results */
.no-results {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--muted);
}

.no-results h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: var(--space-sm);
}

/* Skeleton loading */
.skeleton-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.skeleton-line {
  height: 14px;
  background: linear-gradient(90deg, var(--border) 25%, transparent 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  margin-bottom: var(--space-sm);
}

.skeleton-line:nth-child(1) { width: 40%; height: 12px; }
.skeleton-line:nth-child(2) { width: 100%; }
.skeleton-line:nth-child(3) { width: 90%; }
.skeleton-line:nth-child(4) { width: 70%; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Error state */
.error-state {
  text-align: center;
  padding: var(--space-xl);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #991b1b;
}

[data-theme="dark"] .error-state {
  background: #3b1a1a;
  border-color: #6b2020;
  color: #fca5a5;
}

/* Responsive */
@media (max-width: 768px) {
  .header h1 { font-size: 1.1rem; }
  .header h1 small { font-size: 0.75rem; }
  .main { padding: var(--space-lg) var(--space-md); }
  .search-box { flex-direction: column; }
  .search-btn { width: 100%; }
  .stats-bar { flex-wrap: wrap; gap: var(--space-md); }
  .filter-select { max-width: none; flex: 1; min-width: 140px; }
}

@media (max-width: 375px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: var(--space-sm); }
  .header-controls { width: 100%; justify-content: flex-end; }
  .result-card { padding: var(--space-md); }
  .suggestions { flex-direction: column; }
  .suggestion-chip { width: 100%; text-align: center; }
}