/* ===================================
   Tool: color-palette
   カラーパレットジェネレーター
   =================================== */

/* ---- Tab Navigation ---- */
.palette-tabs {
  display: flex;
  gap: var(--space-xs);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 4px;
  margin-bottom: var(--space-lg);
  overflow-x: auto;
}

.palette-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 10px 16px;
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  white-space: nowrap;
}

.palette-tab:hover {
  background: rgba(76, 175, 145, 0.08);
  color: var(--text-primary);
}

.palette-tab.active {
  background: var(--bg-card);
  color: var(--green-main);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.palette-tab .tab-icon {
  font-size: 1.1rem;
}

.palette-tab .tab-label {
  font-family: inherit;
}

/* ---- Tab Panels ---- */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ---- Common Card ---- */
.panel-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.panel-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.panel-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ---- Swatch Grid ---- */
.swatch-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.swatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.swatch:hover {
  transform: translateY(-3px);
}

.swatch-color {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.2s ease;
}

.swatch:hover .swatch-color {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.swatch-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-family: 'SF Mono', 'Consolas', monospace;
  letter-spacing: -0.3px;
}

/* ---- Tab 1: Extract ---- */
.extract-drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
  background: var(--bg-secondary);
  position: relative;
}

.extract-drop-zone:hover,
.extract-drop-zone.dragover {
  border-color: var(--green-main);
  background: rgba(76, 175, 145, 0.04);
}

.extract-drop-zone.dragover {
  box-shadow: 0 0 0 3px rgba(76, 175, 145, 0.15);
}

.extract-drop-zone .drop-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.extract-drop-zone .drop-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.extract-drop-zone .drop-hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.extract-drop-zone input[type="file"] {
  display: none;
}

.extract-preview-area {
  display: none;
  margin-bottom: var(--space-lg);
}

.extract-preview-area.visible {
  display: block;
}

.extract-preview-wrap {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.extract-image-wrap {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.extract-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.extract-controls {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.extract-slider-group label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.extract-slider-group label span {
  font-weight: 600;
  color: var(--green-main);
}

.extract-slider-group input[type="range"] {
  width: 100%;
}

.extract-actions {
  display: flex;
  gap: var(--space-sm);
}

.extract-palette {
  margin-top: var(--space-md);
}

.extract-palette .swatch-grid {
  gap: var(--space-md);
}

.extract-palette .swatch-color {
  width: 72px;
  height: 72px;
}

/* ---- Tab 2: Harmony ---- */
.harmony-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.harmony-picker-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.harmony-picker-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.harmony-color-picker {
  width: 48px;
  height: 48px;
  border: 2px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  background: none;
}

.harmony-hex-input {
  width: 100px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: 'SF Mono', 'Consolas', monospace;
  text-align: center;
  background: var(--bg-card);
  color: var(--text-primary);
}

.harmony-hex-input:focus {
  outline: none;
  border-color: var(--green-main);
  box-shadow: 0 0 0 3px rgba(76, 175, 145, 0.12);
}

.harmony-rules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.harmony-rule-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: box-shadow 0.2s ease;
}

.harmony-rule-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.harmony-rule-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.harmony-rule-title .rule-desc {
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.harmony-rule-swatches {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.harmony-swatch {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(0, 0, 0, 0.06);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
}

.harmony-swatch:hover {
  transform: scale(1.12);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
}

.harmony-swatch.is-base {
  border-color: var(--green-main);
  box-shadow: 0 0 0 2px rgba(76, 175, 145, 0.25);
}

.harmony-swatch-hex {
  font-size: 0.68rem;
  text-align: center;
  color: var(--text-secondary);
  margin-top: 3px;
  font-family: 'SF Mono', 'Consolas', monospace;
}

/* ---- Tab 3: Gradient ---- */
.gradient-preview {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-lg);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
  transition: background 0.3s ease;
}

.gradient-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.gradient-control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.gradient-control-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

.gradient-type-btns {
  display: flex;
  gap: var(--space-xs);
}

.gradient-type-btn {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.gradient-type-btn.active {
  background: var(--green-main);
  color: white;
  border-color: var(--green-main);
}

.gradient-direction-btns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}

.gradient-dir-btn {
  padding: 6px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 1rem;
  text-align: center;
  transition: all 0.15s ease;
  color: var(--text-secondary);
}

.gradient-dir-btn.active {
  background: var(--green-main);
  color: white;
  border-color: var(--green-main);
}

.gradient-dir-btn:hover {
  border-color: var(--green-main);
}

.gradient-angle-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.gradient-angle-group input[type="range"] {
  flex: 1;
}

.gradient-angle-group .angle-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--green-main);
  min-width: 40px;
  text-align: right;
  font-family: 'SF Mono', 'Consolas', monospace;
}

.gradient-stops {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.gradient-stop {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 8px 12px;
}

.gradient-stop input[type="color"] {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  background: none;
}

.gradient-stop input[type="range"] {
  flex: 1;
}

.gradient-stop .stop-position {
  font-size: 0.8rem;
  font-weight: 500;
  min-width: 35px;
  text-align: right;
  color: var(--text-secondary);
  font-family: 'SF Mono', 'Consolas', monospace;
}

.gradient-stop .stop-remove {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 1.1rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease;
}

.gradient-stop .stop-remove:hover {
  color: #e74c3c;
}

.gradient-stop-actions {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.gradient-code {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
}

.gradient-code code {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.82rem;
  color: var(--text-primary);
  word-break: break-all;
  line-height: 1.6;
}

.gradient-code .code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.gradient-code .code-copy-btn:hover {
  border-color: var(--green-main);
  color: var(--green-main);
}

/* ---- Tab 4: Contrast ---- */
.contrast-inputs {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.contrast-color-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 1;
  min-width: 200px;
}

.contrast-color-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
}

.contrast-color-group input[type="color"] {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  background: none;
}

.contrast-color-group input[type="text"] {
  width: 90px;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-family: 'SF Mono', 'Consolas', monospace;
  text-align: center;
  background: var(--bg-card);
  color: var(--text-primary);
}

.contrast-color-group input[type="text"]:focus {
  outline: none;
  border-color: var(--green-main);
  box-shadow: 0 0 0 3px rgba(76, 175, 145, 0.12);
}

.contrast-swap-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.contrast-swap-btn:hover {
  border-color: var(--green-main);
  background: rgba(76, 175, 145, 0.05);
}

.contrast-preview-box {
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  text-align: center;
  transition: all 0.3s ease;
}

.contrast-preview-box .preview-normal {
  font-size: 16px;
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.contrast-preview-box .preview-large {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
}

.contrast-results {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contrast-result-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
}

.contrast-ratio-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  font-family: 'SF Mono', 'Consolas', monospace;
}

.contrast-ratio-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.wcag-badges {
  display: flex;
  gap: var(--space-xs);
  justify-content: center;
  flex-wrap: wrap;
}

.wcag-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.wcag-badge.pass {
  background: #d4edda;
  color: #155724;
}

.wcag-badge.fail {
  background: #f8d7da;
  color: #721c24;
}

.contrast-suggestion {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}

.contrast-suggestion-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.contrast-suggestion-swatches {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.suggestion-swatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.suggestion-swatch:hover {
  transform: translateY(-2px);
}

.suggestion-swatch-color {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(0, 0, 0, 0.06);
}

.suggestion-swatch-info {
  font-size: 0.68rem;
  color: var(--text-secondary);
  text-align: center;
  font-family: 'SF Mono', 'Consolas', monospace;
}

.suggestion-swatch-ratio {
  font-size: 0.65rem;
  color: var(--green-main);
  font-weight: 600;
}

/* ---- Favorites ---- */
.favorites-panel {
  margin-top: var(--space-md);
}

.favorites-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.favorites-header h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.favorites-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.favorites-empty {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  padding: var(--space-md);
  text-align: center;
  width: 100%;
}

.fav-swatch {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 2px solid rgba(0, 0, 0, 0.06);
  cursor: pointer;
  position: relative;
  transition: transform 0.15s ease;
}

.fav-swatch:hover {
  transform: scale(1.15);
}

/* ---- Tips Section ---- */
.tips-section {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.tips-header {
  margin-bottom: var(--space-lg);
}

.tips-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.tip-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
}

.tip-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.tip-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.tip-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .palette-tab .tab-label {
    font-size: 0.8rem;
  }

  .harmony-rules-grid {
    grid-template-columns: 1fr;
  }

  .gradient-controls {
    grid-template-columns: 1fr;
  }

  .contrast-results {
    grid-template-columns: 1fr;
  }

  .extract-preview-wrap {
    flex-direction: column;
    align-items: stretch;
  }

  .extract-image-wrap {
    width: 100%;
    height: 180px;
  }

  .tips-grid {
    grid-template-columns: 1fr;
  }

  .swatch-color {
    width: 52px;
    height: 52px;
  }

  .harmony-swatch {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 600px) {
  .palette-tab .tab-label {
    display: none;
  }

  .palette-tab .tab-icon {
    font-size: 1.3rem;
  }

  .palette-tab {
    padding: 10px 14px;
  }

  .harmony-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .contrast-inputs {
    flex-direction: column;
    align-items: stretch;
  }

  .contrast-swap-btn {
    align-self: center;
    transform: rotate(90deg);
  }

  .contrast-color-group {
    min-width: auto;
  }

  .gradient-direction-btns {
    grid-template-columns: repeat(4, 1fr);
  }
}