:root {
  --theme-page: linear-gradient(180deg, #fbf8f1 0%, #f0e6d5 100%);
  --theme-page-alt: rgba(198, 154, 88, 0.09);
  --theme-surface: #fffdf8;
  --theme-surface-soft: #f3eadb;
  --theme-text: #342a20;
  --theme-muted: #746657;
  --theme-primary: #795334;
  --theme-primary-dark: #4c3526;
  --theme-accent: #c69a58;
  --theme-border: rgba(121, 83, 52, 0.15);
  --theme-header: rgba(251, 248, 241, 0.92);
  --theme-note: #fbf3e6;
  --theme-shadow: 0 18px 45px rgba(76, 53, 38, 0.12);
}

body {
  background: var(--theme-page);
  color: var(--theme-text);
}

.alt-bg {
  background: var(--theme-page-alt);
}

.site-header {
  background: var(--theme-header);
  border-color: var(--theme-border);
}

.hero-card,
.feature-card,
.quiz-card,
.quote-card,
.summary-box,
.verse-panel,
.history-cta-wrap,
.history-item,
.history-card {
  background: var(--theme-surface);
  border-color: var(--theme-border);
  box-shadow: var(--theme-shadow);
}

.hero-card,
.feature-card.highlight {
  background: linear-gradient(180deg, var(--theme-surface), var(--theme-surface-soft));
}

.feature-card {
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover,
.feature-card:focus-visible {
  background: linear-gradient(180deg, var(--theme-surface-soft), var(--theme-surface));
  border-color: var(--theme-border);
}

.secondary-btn,
.quiz-option,
.verse-select,
.word-search-letter,
.history-nav a {
  background: var(--theme-surface-soft);
  border-color: var(--theme-border);
  color: var(--theme-text);
}

.primary-btn,
.brand-mark,
.theme-toggle {
  background: linear-gradient(135deg, var(--theme-primary), var(--theme-primary-dark));
  color: #fff;
}

.eyebrow,
.reference,
.hero-card span,
.quote-card span,
.history-card p strong,
.scripture-ref,
.history-item span {
  color: var(--theme-primary);
}

.history-card p strong,
.theme-drawer h2 {
  color: var(--theme-primary-dark);
}

.badge {
  background: var(--theme-page-alt);
  color: var(--theme-primary-dark);
}

.icon,
.history-item span,
.scripture-ref {
  background: var(--theme-page-alt);
}

.history-note {
  background: var(--theme-note);
  border-color: var(--theme-accent);
}

.theme-toggle,
.theme-close {
  border: 1px solid var(--theme-border);
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  box-shadow: var(--theme-shadow);
}

.theme-toggle:hover,
.theme-close:hover {
  filter: brightness(1.08);
}

.theme-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(20, 16, 12, 0.48);
}

.theme-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 21;
  width: min(380px, calc(100% - 28px));
  padding: 28px 24px;
  overflow-y: auto;
  background: var(--theme-surface);
  color: var(--theme-text);
  box-shadow: -18px 0 45px rgba(0, 0, 0, 0.18);
  transform: translateX(105%);
  visibility: hidden;
  transition: transform 0.24s ease, visibility 0.24s ease;
}

.theme-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

.theme-drawer-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 28px;
}

.theme-drawer-heading .eyebrow {
  margin-bottom: 4px;
}

.theme-drawer h2 {
  font-size: 1.7rem;
  line-height: 1.2;
}

.theme-close {
  width: 40px;
  height: 40px;
  background: var(--theme-surface-soft);
  color: var(--theme-text);
  font-size: 1.6rem;
  line-height: 1;
}

.theme-options {
  display: grid;
  gap: 10px;
  border: 0;
}

.theme-options legend {
  margin-bottom: 12px;
  font-weight: 700;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 68px;
  padding: 10px 12px;
  border: 1px solid var(--theme-border);
  border-radius: 14px;
  cursor: pointer;
}

.theme-option:has(input:checked) {
  outline: 2px solid var(--theme-primary);
  outline-offset: 1px;
}

.theme-option input {
  accent-color: var(--theme-primary);
}

.theme-option > span:last-child,
.theme-dark-toggle > span {
  display: grid;
  gap: 2px;
}

.theme-option small,
.theme-dark-toggle small {
  color: var(--theme-muted);
  font-size: 0.8rem;
}

.theme-swatch {
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--theme-border);
  border-radius: 12px;
  background: linear-gradient(135deg, var(--swatch-color) 0 50%, var(--swatch-light) 50%);
}

.theme-dark-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 16px 12px;
  border-top: 1px solid var(--theme-border);
  border-bottom: 1px solid var(--theme-border);
  cursor: pointer;
}

.theme-dark-toggle input {
  width: 20px;
  height: 20px;
  accent-color: var(--theme-primary);
}

.theme-status {
  min-height: 24px;
  margin-top: 12px;
  color: var(--theme-muted);
  font-size: 0.85rem;
}

body.theme-dark .quiz-option.correct {
  background: rgba(71, 156, 111, 0.22);
  border-color: rgba(116, 205, 153, 0.45);
  color: #a8e1bd;
}

body.theme-dark .quiz-option.wrong {
  background: rgba(191, 83, 83, 0.2);
  border-color: rgba(229, 120, 120, 0.4);
  color: #ffc0b8;
}

@media (max-width: 640px) {
  .theme-toggle {
    min-height: 42px;
    padding: 0 12px;
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .feature-card,
  .theme-drawer,
  .theme-toggle,
  .theme-close {
    transition: none;
  }
}