/* ============================================
   New Tool Categories - Design System Extension
   For: Dev Tools, Design Tools, Calculators, Time, Converters
   ============================================ */

/* ============================================
   Category Colors
   ============================================ */
:root {
  --color-dev: #6366F1;
  --color-dev-light: #818CF8;
  --color-design: #EC4899;
  --color-design-light: #F472B6;
  --color-calc: #F59E0B;
  --color-calc-light: #FBBF24;
  --color-time: #06B6D4;
  --color-time-light: #22D3EE;
  --color-convert: #8B5CF6;
  --color-convert-light: #A78BFA;
}

/* ============================================
   Homepage - Category Cards (New Grid Layout)
   ============================================ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.category-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--category-color, var(--primary));
  opacity: 0;
  transition: opacity var(--transition);
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--category-color, var(--primary));
}

.category-card:hover::before {
  opacity: 1;
}

.category-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.category-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  background: var(--category-color, var(--primary));
  flex-shrink: 0;
}

.category-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.category-card-count {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 500;
}

.category-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  flex: 1;
}

.category-card-tools {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.category-card-tag {
  font-size: 11px;
  padding: 3px 8px;
  background: var(--bg);
  border-radius: 4px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================
   Calculator / Converter Shared Styles
   ============================================ */
.calc-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.calc-input-group {
  margin-bottom: 20px;
}

.calc-input-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.calc-input-group input,
.calc-input-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  outline: none;
  transition: border-color var(--transition);
  background: var(--surface);
  color: var(--text);
}

.calc-input-group input:focus,
.calc-input-group select:focus {
  border-color: var(--border-focus);
}

.calc-input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.calc-result {
  margin-top: 20px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  text-align: center;
}

.calc-result-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.calc-result-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-display);
}

.calc-result-unit {
  font-size: 14px;
  color: var(--text-light);
  margin-left: 4px;
}

/* ============================================
   Color Picker / Converter Styles
   ============================================ */
.color-picker-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.color-preview-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.color-preview-box {
  width: 100%;
  height: 160px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: background-color 0.1s ease;
  position: relative;
}

.color-preview-box::after {
  content: 'Click to pick';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
  pointer-events: none;
}

.color-values {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.color-value-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.color-value-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  width: 40px;
  text-transform: uppercase;
}

.color-value-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font-mono);
  outline: none;
  background: var(--surface);
  color: var(--text);
}

.color-value-input:focus {
  border-color: var(--border-focus);
}

.color-value-copy {
  padding: 8px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.color-value-copy:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ============================================
   Gradient / Shadow Generator Styles
   ============================================ */
.generator-preview {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  transition: all 0.15s ease;
}

.generator-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.control-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 80px;
}

.control-slider {
  flex: 1;
  accent-color: var(--primary);
}

.control-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  min-width: 50px;
  text-align: right;
  font-family: var(--font-mono);
}

.color-stops {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.color-stop {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.color-stop input[type="color"] {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
}

.color-stop .remove-stop {
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  padding: 2px;
}

.color-stop .remove-stop:hover {
  color: var(--error);
}

/* ============================================
   Timer / Clock Styles
   ============================================ */
.timer-display {
  text-align: center;
  padding: 40px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
}

.timer-time {
  font-size: 64px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text);
  line-height: 1;
  margin-bottom: 8px;
}

.timer-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.timer-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.timer-btn {
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.timer-btn-primary {
  background: var(--primary);
  color: #fff;
}

.timer-btn-primary:hover {
  background: var(--primary-dark);
}

.timer-btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.timer-btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* World Clock Grid */
.world-clock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.world-clock-card {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.world-clock-city {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.world-clock-time {
  font-size: 28px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--primary);
}

.world-clock-date {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

/* ============================================
   Code Screenshot Generator
   ============================================ */
.code-editor-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.code-editor-pane {
  display: flex;
  flex-direction: column;
}

.code-editor-pane label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.code-editor-pane textarea {
  width: 100%;
  min-height: 240px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--font-mono);
  line-height: 1.6;
  resize: vertical;
  outline: none;
  background: var(--surface);
  color: var(--text);
  tab-size: 2;
}

.code-editor-pane textarea:focus {
  border-color: var(--border-focus);
}

.code-preview {
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.code-preview pre {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  font-family: var(--font-mono);
}

.code-preview code {
  background: transparent;
  padding: 0;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .category-grid {
    grid-template-columns: 1fr;
  }

  .calc-input-row {
    grid-template-columns: 1fr;
  }

  .color-picker-wrap {
    grid-template-columns: 1fr;
  }

  .code-editor-wrap {
    grid-template-columns: 1fr;
  }

  .timer-time {
    font-size: 42px;
  }

  .world-clock-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}