/* ============================================================
 * 温州指数 (Wenzhou Index) - Unified Design System v2.0
 * Generated: 2026-07-08
 * ============================================================
 */

/* === CSS Variables / Design Tokens === */
:root {
  /* Colors */
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-elevated: #1e293b;
  --color-bg-input: #0f172a;
  --color-border: #334155;
  --color-border-light: #475569;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-accent-blue: #3b82f6;
  --color-accent-green: #10b981;
  --color-accent-red: #ef4444;
  --color-accent-amber: #f59e0b;
  --color-accent-purple: #8b5cf6;
  --color-accent-cyan: #06b6d4;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 13px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 22px;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 14px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--color-accent-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Typography === */
h1 { font-size: var(--font-size-2xl); font-weight: 700; color: var(--color-text-primary); }
h2 { font-size: var(--font-size-xl); font-weight: 600; color: var(--color-text-primary); }
h3 { font-size: var(--font-size-lg); font-weight: 600; color: var(--color-text-secondary); }

.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent-blue); }
.text-success { color: var(--color-accent-green); }
.text-danger { color: var(--color-accent-red); }
.text-warning { color: var(--color-accent-amber); }

/* === Layout === */
.container { max-width: 1400px; margin: 0 auto; padding: 0 var(--space-6); }

.header {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  padding: var(--space-6) var(--space-8);
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 { font-size: 20px; }
.header p { color: var(--color-text-secondary); font-size: var(--font-size-sm); margin-top: var(--space-1); }

.nav-tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--color-bg-secondary);
  padding: var(--space-1);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.nav-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  background: none;
}

.nav-tab:hover { color: var(--color-text-primary); background: var(--color-bg-tertiary); }
.nav-tab.active { background: var(--color-accent-blue); color: white; }

/* === Grid === */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* === Cards === */
.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.card-body { }

/* === Stats === */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-3);
}

.stat-card {
  background: var(--color-bg-primary);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.stat-value .unit { font-size: var(--font-size-sm); font-weight: 400; color: var(--color-text-muted); }

.stat-change { font-size: var(--font-size-xs); margin-top: var(--space-1); }
.stat-change.up { color: var(--color-accent-green); }
.stat-change.down { color: var(--color-accent-red); }

/* === Charts === */
.chart-container {
  position: relative;
  width: 100%;
  min-height: 240px;
}

.chart-container canvas { width: 100% !important; }

/* === Tables === */
.table-container { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

table th {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  padding: var(--space-3) var(--space-3);
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

table td {
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-bg-secondary);
  color: var(--color-text-primary);
}

table tr:hover td { background: var(--color-bg-secondary); }

/* === Badges === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.badge-blue { background: #1e3a5f; color: #93c5fd; }
.badge-green { background: #065f46; color: #6ee7b7; }
.badge-red { background: #7f1d1d; color: #fca5a5; }
.badge-amber { background: #78350f; color: #fcd34d; }
.badge-purple { background: #4c1d95; color: #c4b5fd; }
.badge-cyan { background: #164e63; color: #67e8f9; }

/* === Risk Level Indicators === */
.risk-low { color: var(--color-accent-green); }
.risk-mid-low { color: #84cc16; }
.risk-mid { color: var(--color-accent-amber); }
.risk-mid-high { color: #f97316; }
.risk-high { color: var(--color-accent-red); }

.risk-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--color-bg-tertiary);
  overflow: hidden;
}

.risk-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all 0.2s;
}

.btn:hover { background: var(--color-bg-tertiary); }
.btn-primary { background: var(--color-accent-blue); border-color: var(--color-accent-blue); color: white; }
.btn-primary:hover { background: #2563eb; }

/* === Utilities === */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: var(--font-size-sm); }
.font-bold { font-weight: 700; }
.hidden { display: none; }

/* === Loading === */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  color: var(--color-text-muted);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* === Responsive === */
@media (max-width: 768px) {
  .header { padding: var(--space-4); }
  .header h1 { font-size: 16px; }
  .container { padding: 0 var(--space-4); }
  .grid { gap: var(--space-4); }
  .card { padding: var(--space-4); }
}

/* === Print === */
@media print {
  .header { position: static; }
  .nav-tabs { display: none; }
  body { background: white; color: black; }
}