/* ============================================================
   demo-base.css - 6 个 demo 共享基础样式 (2026-07-13)
   每个 demo 加载: base.css + demo-<name>.css (主题)
   ============================================================ */

/* --- Reset --- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body.demo-base {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- 通用按钮 --- */
.db-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 6px;
  border: 1px solid var(--db-border, rgba(255, 255, 255, 0.1));
  background: var(--db-bg-2, rgba(255, 255, 255, 0.04));
  color: var(--db-text, #e6edf3);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
  white-space: nowrap;
}
.db-btn:hover {
  background: var(--db-bg-hover, rgba(255, 255, 255, 0.08));
  border-color: var(--db-accent, #58a6ff);
}
.db-btn.is-primary {
  background: linear-gradient(135deg, var(--db-accent, #58a6ff), var(--db-accent-2, #a371f7));
  border-color: transparent;
  color: white;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(88, 166, 255, 0.2);
}
.db-btn.is-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(88, 166, 255, 0.4);
}
.db-btn.is-danger {
  border-color: #f85149;
  color: #f85149;
}
.db-btn.is-danger:hover { background: rgba(248, 81, 73, 0.12); }
.db-btn.is-success {
  border-color: #3fb950;
  color: #3fb950;
}
.db-btn.is-success:hover { background: rgba(63, 185, 80, 0.12); }
.db-btn.is-ghost {
  background: transparent;
  border-color: transparent;
}
.db-btn.is-ghost:hover { background: var(--db-bg-2); }
.db-btn.is-sm { padding: 4px 8px; font-size: 11px; border-radius: 4px; }
.db-btn-group {
  display: inline-flex;
  border: 1px solid var(--db-border, rgba(255, 255, 255, 0.1));
  border-radius: 6px;
  overflow: hidden;
}
.db-btn-group .db-btn {
  border-radius: 0;
  border-right: 1px solid var(--db-border, rgba(255, 255, 255, 0.08));
}
.db-btn-group .db-btn:last-child { border-right: none; }
.db-btn-group .db-btn.is-active {
  background: var(--db-accent, #58a6ff);
  color: white;
  border-color: var(--db-accent, #58a6ff);
}
.db-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* --- 通用表单 --- */
.db-input, .db-select, .db-textarea {
  background: var(--db-bg-2, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--db-border, rgba(255, 255, 255, 0.1));
  border-radius: 6px;
  color: var(--db-text, #e6edf3);
  padding: 7px 12px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: all 0.15s ease;
  width: 100%;
}
.db-input:focus, .db-select:focus, .db-textarea:focus {
  border-color: var(--db-accent, #58a6ff);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}
.db-textarea { resize: vertical; min-height: 80px; }
.db-range {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--db-bg-3, rgba(255, 255, 255, 0.08));
  border-radius: 999px;
  cursor: pointer;
  outline: none;
}
.db-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--db-accent, #58a6ff);
  box-shadow: 0 0 0 4px rgba(88, 166, 255, 0.2);
  cursor: pointer;
}
.db-range::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--db-accent, #58a6ff);
  border: none;
  cursor: pointer;
}
.db-form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}
.db-form-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--db-text-3, #6e7681);
  letter-spacing: 1px;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.db-form-label-value { color: var(--db-accent, #58a6ff); }
.db-form-help { font-size: 11px; color: var(--db-text-3, #6e7681); margin-top: 2px; }
.db-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
}
.db-switch-track {
  width: 32px; height: 18px;
  background: var(--db-bg-3, rgba(255, 255, 255, 0.08));
  border-radius: 999px;
  position: relative;
  transition: background 0.15s ease;
}
.db-switch-track::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  background: var(--db-text-3, #6e7681);
  border-radius: 50%;
  transition: all 0.15s ease;
}
.db-switch.is-on .db-switch-track { background: var(--db-accent, #58a6ff); }
.db-switch.is-on .db-switch-track::after {
  background: white;
  left: 16px;
  box-shadow: 0 0 6px rgba(88, 166, 255, 0.6);
}
.db-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 13px;
  user-select: none;
}
.db-checkbox input { cursor: pointer; }

/* --- 通用徽章/标签 --- */
.db-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
}
.db-badge.is-blue { background: rgba(88, 166, 255, 0.15); color: #58a6ff; }
.db-badge.is-green { background: rgba(63, 185, 80, 0.15); color: #3fb950; }
.db-badge.is-orange { background: rgba(240, 136, 62, 0.15); color: #f0883e; }
.db-badge.is-red { background: rgba(248, 81, 73, 0.15); color: #f85149; }
.db-badge.is-purple { background: rgba(163, 113, 247, 0.15); color: #a371f7; }
.db-badge.is-yellow { background: rgba(210, 153, 34, 0.15); color: #d29922; }
.db-badge.is-muted { background: rgba(255, 255, 255, 0.06); color: #6e7681; }

/* --- 通用状态点 --- */
.db-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #6e7681;
  margin-right: 4px;
}
.db-dot.is-green { background: #3fb950; box-shadow: 0 0 4px #3fb950; }
.db-dot.is-orange { background: #f0883e; box-shadow: 0 0 4px #f0883e; }
.db-dot.is-red { background: #f85149; box-shadow: 0 0 4px #f85149; animation: db-pulse 1s ease-in-out infinite; }
.db-dot.is-blue { background: #58a6ff; box-shadow: 0 0 4px #58a6ff; }
.db-dot.is-purple { background: #a371f7; box-shadow: 0 0 4px #a371f7; }
@keyframes db-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

/* --- 通用进度条 --- */
.db-progress {
  height: 6px;
  background: var(--db-bg-3, rgba(255, 255, 255, 0.08));
  border-radius: 999px;
  overflow: hidden;
}
.db-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--db-accent, #58a6ff), var(--db-accent-2, #a371f7));
  border-radius: 999px;
  transition: width 0.3s ease;
}
.db-progress.is-success .db-progress-bar { background: linear-gradient(90deg, #3fb950, #58a6ff); }
.db-progress.is-warning .db-progress-bar { background: linear-gradient(90deg, #f0883e, #d29922); }
.db-progress.is-danger .db-progress-bar { background: linear-gradient(90deg, #f85149, #f0883e); }

/* --- 通用表格 --- */
.db-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.db-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 700;
  color: var(--db-text-3, #6e7681);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
  border-bottom: 1px solid var(--db-border, rgba(255, 255, 255, 0.08));
  background: var(--db-bg-2, rgba(255, 255, 255, 0.02));
}
.db-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--db-border, rgba(255, 255, 255, 0.04));
  color: var(--db-text, #e6edf3);
}
.db-table tr:last-child td { border-bottom: none; }
.db-table tr:hover td { background: var(--db-bg-2, rgba(255, 255, 255, 0.02)); }
.db-table tr.is-warning td { background: rgba(240, 136, 62, 0.06); }
.db-table tr.is-error td { background: rgba(248, 81, 73, 0.08); }
.db-table tr.is-success td { background: rgba(63, 185, 80, 0.04); }

/* --- 通用 KPI 卡片 --- */
.db-kpi {
  text-align: center;
  padding: 14px 8px;
}
.db-kpi-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
}
.db-kpi-value {
  font-family: 'Orbitron', 'JetBrains Mono', monospace;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1;
}
.db-kpi-unit {
  font-size: 12px;
  color: var(--db-text-3, #6e7681);
  font-family: 'JetBrains Mono', monospace;
}
.db-kpi-label {
  font-size: 11px;
  color: var(--db-text-3, #6e7681);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
}
.db-kpi-delta {
  font-size: 11px;
  margin-top: 6px;
  font-family: 'JetBrains Mono', monospace;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.db-kpi-delta.is-up { color: #3fb950; }
.db-kpi-delta.is-down { color: #f85149; }

/* --- 通用 SVG 图表 --- */
.db-chart { width: 100%; height: 200px; display: block; }
.db-chart-tall { height: 280px; }
.db-chart-short { height: 140px; }

/* --- 通用 Toast --- */
.db-toast-container {
  position: fixed;
  top: 60px;
  right: 20px;
  z-index: 400;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.db-toast {
  background: var(--db-bg-1, #161b22);
  border: 1px solid var(--db-border, rgba(255, 255, 255, 0.1));
  border-radius: 8px;
  padding: 12px 16px;
  min-width: 280px;
  max-width: 380px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  display: flex;
  gap: 10px;
  pointer-events: auto;
  animation: db-toast-in 0.3s ease;
  border-left: 3px solid var(--db-accent, #58a6ff);
}
.db-toast.is-success { border-left-color: #3fb950; }
.db-toast.is-warning { border-left-color: #f0883e; }
.db-toast.is-error { border-left-color: #f85149; }
.db-toast.is-info { border-left-color: #58a6ff; }
@keyframes db-toast-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.db-toast-title { font-weight: 600; font-size: 13px; margin-bottom: 2px; }
.db-toast-msg { font-size: 12px; color: var(--db-text-2, #8b949e); }

/* --- 通用空态 --- */
.db-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--db-text-3, #6e7681);
}
.db-empty-icon { font-size: 36px; opacity: 0.4; margin-bottom: 12px; }

/* --- 通用响应式断点 --- */
@media (max-width: 1280px) {
  .db-grid-4 { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 1023px) {
  .db-grid-3 { grid-template-columns: repeat(2, 1fr) !important; }
  .db-sidebar { display: none !important; }
}
@media (max-width: 767px) {
  .db-grid-4, .db-grid-3, .db-grid-2 { grid-template-columns: 1fr !important; }
  .db-main { padding: 16px !important; }
}