/* ========== Claude-inspired Warm Light Theme ========== */
:root {
  --bg-primary: #FAF8F5;
  --bg-secondary: #F2EDE8;
  --bg-card: #FFFFFF;
  --bg-hover: #FDF9F5;
  --border: #E8E0D8;
  --border-hover: #D4C8BC;
  --text-primary: #1A1612;
  --text-secondary: #5C524A;
  --text-muted: #9C8E82;
  --accent: #D4714E;
  --accent-light: #E8956F;
  --accent-dim: rgba(212, 113, 78, 0.08);
  --accent-border: rgba(212, 113, 78, 0.2);
  --coral: #D4714E;
  --coral-dim: rgba(212, 113, 78, 0.08);
  --amber: #C4820E;
  --amber-dim: rgba(196, 130, 14, 0.08);
  --sage: #5B8A72;
  --sage-dim: rgba(91, 138, 114, 0.08);
  --plum: #8B6EA2;
  --plum-dim: rgba(139, 110, 162, 0.08);
  --red: #C0392B;
  --red-dim: rgba(192, 57, 43, 0.06);
  --green-check: #5B8A72;
  --shadow-sm: 0 1px 3px rgba(26, 22, 18, 0.04), 0 1px 2px rgba(26, 22, 18, 0.03);
  --shadow-md: 0 4px 16px rgba(26, 22, 18, 0.06), 0 2px 6px rgba(26, 22, 18, 0.04);
  --shadow-lg: 0 12px 40px rgba(26, 22, 18, 0.08), 0 4px 12px rgba(26, 22, 18, 0.04);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --font-display: 'Source Serif 4', 'Noto Serif SC', Georgia, serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ========== 基础样式 ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 通用动画 */
@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* 柔和背景纹理 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(212,113,78,0.04), transparent),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(139,110,162,0.03), transparent),
    radial-gradient(ellipse 70% 40% at 50% 50%, rgba(91,138,114,0.02), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ========== 动画 ========== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(91,138,114,0.3); }
  50% { opacity: 0.7; box-shadow: 0 0 0 5px rgba(91,138,114,0); }
}

@keyframes sparkle {
  0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
  50% { transform: scale(1.2) rotate(180deg); opacity: 0.8; }
}

@keyframes scan {
  0% { top: 0; opacity: 1; }
  50% { top: 100%; opacity: 0.6; }
  51% { opacity: 0; }
  100% { top: 0; opacity: 0; }
}

@keyframes annotate-in {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}

/* ========== 主内容区 ========== */
.main-content {
  margin-top: 64px;
  padding: 36px 40px;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.section {
  display: none;
  animation: fadeIn 0.45s ease;
}

.section.active {
  display: block;
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
  .main-content { padding: 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .dashboard-grid .card-lg { grid-row: auto; }
  .predict-cards { grid-template-columns: 1fr; }
  .dispatch-layout { grid-template-columns: 1fr; }
  .crowd-layout { grid-template-columns: 1fr; }
  .crowd-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .rules-severity-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .topbar { padding: 0 16px; }
  .nav-links { display: none; }
  .main-content { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr; }
  .crowd-stats { grid-template-columns: 1fr 1fr; }
  .rules-content-horizontal { padding: 18px; }
  .rules-content-horizontal .rule-item { padding: 16px; }
}