/* Unified UI Components CSS */

/* ============================================
   Theme Variables
   ============================================ */

/* Light mode (default) — aligned with --paper/--paper-2 in styles.css so cards
   (vocab-card, word-popover, example-item) sit on the warm page background
   instead of pure white. Ported from the 2026-10-30 preview hotfix. */
:root {
  --bg-primary: #F7F4EE;
  --bg-secondary: #EDEAE4;
  --text-primary: #222222;
  --text-secondary: #666666;
  --border-color: #e0e0e0;
}

/* Dark mode - manual toggle */
[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2a2a2a;
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --border-color: #444444;
}

/* Dark mode - system preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #444444;
  }
}

/* ============================================
   Word Display Component
   ============================================ */

.word-display {
  display: inline-flex;
  align-items: baseline;
  gap: 0.3rem;
  background: none;
  border: none;
  padding: 0.2rem 0.4rem;
  margin: 0.1rem;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 0.2s;
  font-family: inherit;
  font-size: inherit;
  color: var(--text-primary);
}

.word-display:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .word-display:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.word-display ruby {
  display: inline-flex;
  flex-direction: column-reverse;
  align-items: center;
}

.word-display rb {
  font-size: 1.2em;
  line-height: 1.4;
}

.word-display rt,
.word-pinyin {
  font-size: 0.7em;
  color: var(--text-secondary);
  line-height: 1;
  margin-bottom: 2px;
}

.word-display .word-trad {
  font-size: 0.85em;
  color: var(--text-secondary);
}

/* Word status indicators */
.word-display.word-saved {
  background-color: rgba(255, 215, 0, 0.1);
  border-bottom: 2px solid #ffd700;
}

.word-display.word-known {
  opacity: 0.6;
}

/* ============================================
   Vocabulary Card Component
   ============================================ */

.vocab-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: box-shadow 0.2s;
}

.vocab-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .vocab-card:hover {
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.05);
}

.vocab-main {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.vocab-main ruby {
  display: inline-flex;
  flex-direction: column-reverse;
  align-items: center;
}

.vocab-word {
  font-size: 1.8rem;
  font-weight: 500;
  line-height: 1.2;
  color: var(--text-primary);
}

.vocab-pinyin {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.vocab-trad {
  font-size: 1rem;
  color: var(--text-secondary);
}

.vocab-def {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.vocab-example {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  padding-left: 0.5rem;
  border-left: 2px solid var(--border-color);
}

.vocab-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.btn-small {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
  color: var(--text-primary);
}

.btn-small:hover {
  background: var(--bg-secondary);
  border-color: var(--text-secondary);
}

.vocab-save.saved {
  color: #ffd700;
  border-color: #ffd700;
  background: rgba(255, 215, 0, 0.1);
}

[data-theme="dark"] .vocab-save.saved {
  background: rgba(255, 215, 0, 0.2);
}

/* ============================================
   Vocabulary List Component
   ============================================ */

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

@media (max-width: 600px) {
  .vocab-list {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Word Popover Component
   ============================================ */

.word-popover {
  position: fixed;
  z-index: 1000;
  min-width: 320px;
  max-width: 400px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  padding: 1.2rem;
  animation: popoverFadeIn 0.2s ease-out;
}

[data-theme="dark"] .word-popover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

@keyframes popoverFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.popover-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border-color);
}

.popover-word {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.popover-word ruby {
  display: inline-flex;
  flex-direction: column-reverse;
  align-items: center;
}

.popover-word rb {
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

.popover-pinyin {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.popover-trad {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.popover-actions {
  display: flex;
  gap: 0.3rem;
}

.btn-icon {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s;
  color: var(--text-primary);
}

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

.btn-icon.popover-save.saved {
  color: #ffd700;
  border-color: #ffd700;
  background: rgba(255, 215, 0, 0.1);
}

[data-theme="dark"] .btn-icon.popover-save.saved {
  background: rgba(255, 215, 0, 0.2);
}

.btn-icon.popover-known.known {
  color: #4caf50;
  border-color: #4caf50;
  background: rgba(76, 175, 80, 0.1);
}

[data-theme="dark"] .btn-icon.popover-known.known {
  background: rgba(76, 175, 80, 0.2);
}

.popover-section {
  margin-bottom: 1rem;
}

.popover-section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.definition-list {
  margin: 0;
  padding-left: 1.5rem;
  list-style-type: decimal;
}

.definition-list li {
  margin-bottom: 0.3rem;
  line-height: 1.4;
  color: var(--text-primary);
}

.popover-meta {
  display: flex;
  gap: 0.8rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
}

.popover-hsk {
  background: #e3f2fd;
  color: #1976d2;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-weight: 500;
}

[data-theme="dark"] .popover-hsk {
  background: #1e3a5f;
  color: #64b5f6;
}

.popover-rank {
  background: #f3e5f5;
  color: #7b1fa2;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-weight: 500;
}

[data-theme="dark"] .popover-rank {
  background: #4a148c;
  color: #ce93d8;
}

.example-item {
  margin-bottom: 0.8rem;
  padding: 0.6rem;
  background: var(--bg-secondary);
  border-radius: 6px;
}

.example-item:last-child {
  margin-bottom: 0;
}

.example-chinese {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
}

.example-english {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* ============================================
   Clickable Word Component
   ============================================ */

.word-clickable {
  display: inline-flex;
  align-items: baseline;
  background: none;
  border: none;
  padding: 0.2rem 0.4rem;
  margin: 0.1rem;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
  font-family: inherit;
  font-size: inherit;
  border-bottom: 2px solid transparent;
  color: var(--text-primary);
}

.word-clickable:hover {
  background-color: rgba(0, 0, 0, 0.05);
  border-bottom-color: var(--border-color);
}

[data-theme="dark"] .word-clickable:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.word-clickable ruby {
  display: inline-flex;
  flex-direction: column-reverse;
  align-items: center;
}

.word-clickable rb {
  font-size: 1.1em;
  line-height: 1.4;
}

.word-clickable rt,
.word-clickable .word-pinyin {
  font-size: 0.7em;
  color: var(--text-secondary);
  line-height: 1;
  margin-bottom: 2px;
}

.word-clickable.word-saved {
  background-color: rgba(255, 215, 0, 0.1);
  border-bottom-color: #ffd700;
}

.word-clickable.word-known {
  opacity: 0.6;
}

/* ============================================
   Word List Component (for display in text)
   ============================================ */

.word-list {
  display: inline;
  line-height: 1.8;
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 600px) {
  .word-popover {
    min-width: 280px;
    max-width: calc(100vw - 2rem);
    padding: 1rem;
  }

  .popover-word rb {
    font-size: 1.6rem;
  }

  .vocab-card {
    padding: 0.8rem;
  }

  .vocab-word {
    font-size: 1.5rem;
  }
}