/* Kangxi Radicals Hub (214 Bộ Thủ Khang Hy) Styles for DR Dragon */

.radicals-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 24px;
}

.radicals-hero-badge {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.radicals-hero h1 {
  font-size: 26px;
  margin: 0;
  line-height: 1.25;
}

.radicals-hero-desc {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 820px;
  margin-bottom: 20px;
}

.radicals-kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.radicals-kpi-grid .kpi-card {
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--paper-warm);
  border: 1px solid var(--line);
  text-align: center;
}

.radicals-kpi-grid .kpi-value {
  font-size: 24px;
  font-weight: 750;
  color: var(--jade);
  line-height: 1.1;
  margin-bottom: 4px;
}

.radicals-kpi-grid .kpi-label {
  font-size: 11px;
  color: var(--muted);
}

/* Mini-game: Đấu Pháp Chiết Tự Thanh Long */
.radical-quiz-card {
  margin-bottom: 28px;
  border-left: 4px solid var(--jade);
  background: linear-gradient(135deg, var(--paper) 0%, var(--paper-warm) 100%);
}

.radical-quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.radical-quiz-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.quiz-dragon-icon {
  font-size: 32px;
  line-height: 1;
}

.radical-quiz-title-wrap h2 {
  font-size: 18px;
  margin: 0 0 4px;
}

.radical-quiz-title-wrap p {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.radical-quiz-stats {
  display: flex;
  align-items: center;
  gap: 10px;
}

.quiz-streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: #fff4e5;
  color: #b45309;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid #fed7aa;
}

.radical-quiz-stage {
  padding: 20px;
  background: var(--bg);
  border-radius: 14px;
  border: 1px solid var(--line);
  text-align: center;
}

.quiz-char-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.quiz-char-symbol {
  font-size: 58px;
  font-family: 'Noto Serif SC', 'Songti SC', serif;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.quiz-char-meta {
  font-size: 13px;
  color: var(--jade);
  font-weight: 600;
  margin-top: 4px;
}

.quiz-options-prompt {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-width: 520px;
  margin: 0 auto 16px;
}

.quiz-opt-btn {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
  font-weight: 550;
  cursor: pointer;
  transition: all 0.2s ease;
}

.quiz-opt-btn:hover {
  border-color: var(--jade);
  background: var(--soft);
  transform: translateY(-1px);
}

.quiz-opt-btn.is-correct {
  background: #ecfdf5 !important;
  border-color: #10b981 !important;
  color: #065f46 !important;
}

.quiz-opt-btn.is-wrong {
  background: #fef2f2 !important;
  border-color: #ef4444 !important;
  color: #991b1b !important;
}

.quiz-feedback-box {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 12px;
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto;
}

.quiz-feedback-box.is-correct {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.quiz-feedback-box.is-wrong {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* Filter Toolbar */
.radicals-filter-toolbar {
  padding: 18px 20px;
  margin-bottom: 20px;
}

.radicals-group-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.radicals-stroke-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.filter-row-strokes {
  margin-top: 14px;
}

.pill-chip {
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.pill-chip:hover {
  color: var(--ink);
  border-color: var(--jade);
}

.pill-chip.is-active {
  background: var(--jade);
  color: #fff;
  border-color: var(--jade);
}

.radicals-search-row {
  margin-top: 16px;
}

.radical-search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.radical-search-input-wrap .icon {
  position: absolute;
  left: 14px;
  color: var(--muted);
  pointer-events: none;
}

.radical-search-input-wrap input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg);
  font-size: 13px;
  color: var(--ink);
}

.radical-search-input-wrap input:focus {
  outline: none;
  border-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.radicals-results-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--muted);
}

/* Radicals Grid */
.radicals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}

.radical-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.radical-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  border-color: var(--jade-soft);
}

.radical-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.radical-number-tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.radical-badges {
  display: flex;
  align-items: center;
  gap: 6px;
}

.radical-stroke-badge {
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--soft);
  color: var(--jade);
  font-size: 10px;
  font-weight: 600;
}

.radical-group-badge {
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--paper-warm);
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  border: 1px solid var(--line);
}

.radical-glyph-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}

.radical-char {
  font-size: 38px;
  font-family: 'Noto Serif SC', 'Songti SC', serif;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
}

.radical-variants {
  font-size: 16px;
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--jade);
  font-weight: 500;
  margin-left: 6px;
}

.radical-sound-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--jade);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.radical-sound-btn:hover {
  background: var(--soft);
  border-color: var(--jade);
  transform: scale(1.05);
}

.radical-reading-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}

.radical-hanviet {
  font-size: 15px;
  color: var(--ink);
  font-weight: 700;
}

.radical-pinyin {
  font-size: 13px;
  color: var(--jade);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.radical-meaning {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0 0 10px;
  min-height: 36px;
}

.radical-mnemonic-box {
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--paper-warm);
  border: 1px dashed var(--line);
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 12px;
}

.mnemonic-bulb {
  font-size: 13px;
  flex-shrink: 0;
}

.radical-examples-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.examples-label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
}

.examples-btns {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.radical-example-btn {
  padding: 3px 8px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--bg);
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: all 0.2s;
}

.radical-example-btn:hover {
  background: var(--soft);
  border-color: var(--jade);
  color: var(--jade);
  transform: translateY(-1px);
}

.radical-card-footer {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: flex-end;
}

.radical-link-hanzi {
  font-size: 11px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Guide Article & SEO */
.radicals-guide-article {
  padding: 28px 24px;
  margin-top: 24px;
}

.guide-badge-row h2 {
  font-size: 20px;
  margin: 6px 0 20px;
}

.guide-content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.guide-card {
  padding: 18px;
  border-radius: 12px;
  background: var(--bg);
  border: 1px solid var(--line);
}

.guide-step-num {
  font-size: 18px;
  font-weight: 800;
  color: var(--jade);
  opacity: 0.7;
  margin-bottom: 8px;
}

.guide-card h3 {
  font-size: 14px;
  margin: 0 0 8px;
}

.guide-card p {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
}

.radicals-faq-wrap h3 {
  font-size: 16px;
  margin: 0 0 14px;
}

/* Dark mode adjustments */
html[data-theme="dark"] .radical-quiz-card {
  background: linear-gradient(135deg, #13241f 0%, #152c25 100%);
}

html[data-theme="dark"] .quiz-streak-badge {
  background: #372314;
  color: #fbd38d;
  border-color: #653b1b;
}

html[data-theme="dark"] .quiz-opt-btn.is-correct {
  background: #064e3b !important;
  color: #a7f3d0 !important;
  border-color: #059669 !important;
}

html[data-theme="dark"] .quiz-opt-btn.is-wrong {
  background: #450a0a !important;
  color: #fecaca !important;
  border-color: #dc2626 !important;
}

html[data-theme="dark"] .quiz-feedback-box.is-correct {
  background: #064e3b;
  color: #a7f3d0;
  border-color: #059669;
}

html[data-theme="dark"] .quiz-feedback-box.is-wrong {
  background: #450a0a;
  color: #fecaca;
  border-color: #dc2626;
}

/* Responsive */
@media (max-width: 768px) {
  .radicals-kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .quiz-options-grid {
    grid-template-columns: 1fr;
  }
  .guide-content-grid {
    grid-template-columns: 1fr;
  }
  .radicals-grid {
    grid-template-columns: 1fr;
  }
}