/**
 * Main Stylesheet - 主样式文件
 * 智能车辆监控平台
 */

/* ============================================
   CSS Variables - 设计令牌
   ============================================ */
:root {
  /* 颜色系统 */
  --color-bg-primary: #051630;
  --color-bg-secondary: #020a1a;
  --color-bg-panel: rgba(0, 40, 80, 0.3);
  --color-bg-item: rgba(0, 60, 120, 0.3);
  
  --color-border-primary: rgba(0, 140, 255, 0.3);
  --color-border-light: rgba(0, 140, 255, 0.7);
  
  --color-text-primary: #ffffff;
  --color-text-secondary: #7fbbda;
  --color-text-accent: #00ffff;
  --color-text-highlight: #00a8ff;
  
  /* 状态颜色 */
  --color-success: #00ff88;
  --color-warning: #ffa500;
  --color-info: #00d4ff;
  --color-danger: #ff4444;
  
  /* 阴影效果 */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(0, 100, 200, 0.3);
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  /* 间距 */
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 15px;
  --spacing-lg: 20px;
  --spacing-xl: 30px;
  
  /* 字体 */
  --font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 20px;
  --font-size-xxl: 24px;
  --font-size-title: 36px;
}

/* ============================================
   Reset & Base - 重置和基础样式
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-family);
  background: radial-gradient(circle at center, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Header - 顶部导航
   ============================================ */
.main-header {
  height: 80px;
  background: linear-gradient(90deg, 
    rgba(0,0,0,0) 0%, 
    rgba(0,140,255,0.5) 50%, 
    rgba(0,0,0,0) 100%
  );
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-glow);
  position: relative;
}

.main-header::before,
.main-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    rgba(0,140,255,0) 0%, 
    rgba(0,210,255,0.8) 50%, 
    rgba(0,140,255,0) 100%
  );
}

.main-header::before { top: 0; }
.main-header::after { bottom: 0; }

.app-title {
  font-size: var(--font-size-title);
  color: var(--color-text-primary);
  text-shadow: 0 0 15px rgba(0, 150, 255, 1), 0 0 30px rgba(0, 150, 255, 0.5);
  letter-spacing: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -60%);
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: bold;
}

.title-decoration {
  display: inline-block;
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-text-highlight), transparent);
  margin-left: var(--spacing-sm);
}

/* ============================================
   Time & Weather - 时间和天气
   ============================================ */
.time-weather {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-md);
  position: absolute;
  left: var(--spacing-xl);
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
}

.current-time {
  font-size: var(--font-size-xxl);
  color: var(--color-text-highlight);
  text-shadow: 0 0 5px rgba(0, 168, 255, 0.5);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

.weather-info {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: rgba(0, 60, 120, 0.2);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-primary);
}

.weather-icon {
  font-size: var(--font-size-lg);
}

.temperature {
  font-weight: bold;
  color: var(--color-text-accent);
}

/* ============================================
   Main Content Layout - 主内容布局
   ============================================ */
.main-content {
  display: flex;
  height: calc(100vh - 80px);
  padding: var(--spacing-md);
  gap: var(--spacing-md);
}

.left-panel,
.right-panel {
  width: 300px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.center-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-self: center;
  height: 98%;
  margin-top: -28px;
}

/* ============================================
   Panels - 面板组件
   ============================================ */
.panel {
  background: var(--color-bg-panel);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}

.panel:hover {
  box-shadow: 0 0 25px rgba(0, 100, 200, 0.4);
  transform: translateY(-2px);
}

.panel-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  border-bottom: 1px solid var(--color-border-primary);
  padding-bottom: var(--spacing-sm);
}

.title-icon {
  font-size: var(--font-size-xl);
}

/* ============================================
   Data Grid - 数据网格
   ============================================ */
.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.data-item {
  background: var(--color-bg-item);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  text-align: center;
  transition: all 0.2s ease;
}

.data-item:hover {
  background: rgba(0, 60, 120, 0.5);
  border-color: var(--color-text-highlight);
}

.data-label {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.data-value {
  font-size: var(--font-size-xxl);
  color: var(--color-text-accent);
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.data-value.primary { color: var(--color-info); }
.data-value.success { color: var(--color-success); }
.data-value.info { color: var(--color-text-accent); }
.data-value.warning { color: var(--color-warning); }

.unit {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* ============================================
   Route List - 线路列表
   ============================================ */
.route-list {
  margin-top: var(--spacing-md);
  background: rgba(0, 40, 80, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  box-shadow: 0 0 8px rgba(0,140,255,0.1);
  max-height: 200px;
  overflow-y: auto;
}

.route-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid rgba(0,140,255,0.08);
  font-size: var(--font-size-base);
  color: #b8e1ff;
}

.route-item:last-child {
  border-bottom: none;
}

.route-index {
  display: inline-block;
  min-width: 38px;
  font-weight: bold;
  color: #ffd700;
  margin-right: var(--spacing-sm);
}

.route-name {
  flex: 1;
}

.route-status {
  font-size: var(--font-size-base);
  color: var(--color-text-accent);
  margin-left: var(--spacing-sm);
  padding: 2px 8px;
  background: rgba(0, 234, 255, 0.1);
  border-radius: var(--radius-sm);
}

.status-running {
  color: var(--color-success);
  background: rgba(0, 255, 136, 0.1);
}

/* ============================================
   Vehicle Monitor - 车辆监控
   ============================================ */
.vehicle-monitor-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.vehicle-monitor {
  padding: var(--spacing-sm);
}

.vehicle-info {
  display: flex;
  align-items: center;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all 0.2s ease;
}

.vehicle-info:hover {
  border-color: var(--color-text-highlight);
  box-shadow: 0 0 10px rgba(0, 168, 255, 0.3);
}

.vehicle-icon {
  width: 60px;
  height: 60px;
  margin-right: var(--spacing-md);
  filter: drop-shadow(0 0 5px rgba(0, 168, 255, 0.7));
  transition: transform 0.3s ease;
}

.vehicle-info:hover .vehicle-icon {
  transform: scale(1.05);
}

.vehicle-data {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}

.vehicle-speed {
  font-size: var(--font-size-xl);
  color: var(--color-text-accent);
  grid-column: 1 / 3;
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.speed-unit {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.vehicle-position {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.position-icon {
  font-size: var(--font-size-base);
}

/* ============================================
   Chart Container - 图表容器
   ============================================ */
.panel-chart {
  margin-top: var(--spacing-md);
  height: 80px;
  background: rgba(0, 40, 80, 0.18);
  border-radius: var(--radius-md);
  box-shadow: 0 0 6px rgba(0,140,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

/* ============================================
   Map Container - 地图容器
   ============================================ */
#map {
  flex: 1;
  width: 100%;
  background-color: #0a2d5a;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.map-error-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-text-secondary);
  text-align: center;
  padding: var(--spacing-lg);
}

.map-error-message .error-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Animations - 动画效果
   ============================================ */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translate(-50%, -20px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@keyframes slideUp {
  from {
    opacity: 1;
    transform: translate(-50%, 0);
  }
  to {
    opacity: 0;
    transform: translate(-50%, -20px);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 100, 200, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 150, 255, 0.5);
  }
}

/* ============================================
   Scrollbar Styling - 滚动条美化
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 40, 80, 0.2);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 140, 255, 0.3);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 140, 255, 0.5);
}

/* ============================================
   Responsive Design - 响应式设计
   ============================================ */
@media (max-width: 1200px) {
  .left-panel,
  .right-panel {
    width: 250px;
  }
  
  .app-title {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
    overflow-y: auto;
  }
  
  .left-panel,
  .right-panel {
    width: 100%;
  }
  
  .app-title {
    font-size: 24px;
    position: static;
    transform: none;
  }
  
  .time-weather {
    position: static;
    top: auto;
    left: auto;
    transform: none;
    flex-direction: row;
    justify-content: center;
    margin-top: var(--spacing-sm);
  }
}