/* ============================================================
   main.css - 全局样式与主题变量
   ============================================================ */

/* --- CSS 变量 --- */
:root {
  --bg-primary: #0d0d1a;
  --bg-card: #151530;
  --bg-card-hover: #1a1a3d;
  --bg-input: #0e0e24;
  --text-primary: #e0e0ec;
  --text-secondary: #7a7a9e;
  --text-white: #ffffff;
  --border-color: #2a2a50;
  --border-dark: #1a1a3a;
  --gold-start: #FFD700;
  --gold-mid: #F0C030;
  --gold-end: #FFA500;
  --purple-start: #A855F7;
  --purple-end: #7C3AED;
  --blue-start: #3B82F6;
  --blue-end: #2563EB;
  --pink-start: #FF85C0;
  --pink-end: #EC4899;
  --green-start: #4ADE80;
  --green-end: #22C55E;
  --danger-color: #EF4444;
  --danger-hover: #DC2626;
  --border-radius: 12px;
  --gap: 20px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-gold: 0 0 20px rgba(255, 215, 0, 0.15);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  font-size: 16px;
}

body {
  background: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(59, 130, 246, 0.04) 0%, transparent 50%);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- 滚动条美化 --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* --- 应用容器 --- */
#app {
  max-width: 1440px;
  margin: 0 auto;
  padding: 16px 20px;
}

/* --- 头部 --- */
.app-header {
  text-align: center;
  padding: 20px 0 16px;
  position: relative;
}

.app-header h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--gold-start) 0%, var(--gold-end) 50%, var(--gold-mid) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 2px 4px rgba(255, 215, 0, 0.2));
}

.app-header .subtitle {
  color: var(--text-secondary);
  font-size: 12px;
  margin-top: 4px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* --- 主布局（三列） --- */
.main-layout {
  display: grid;
  grid-template-columns: 210px 1fr 230px;
  gap: var(--gap);
  margin-top: var(--gap);
  align-items: start;
}

/* --- 选区框全局美化 --- */
select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%237a7a9e' viewBox='0 0 16 16'%3E%3Cpath d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px !important;
}

/* --- 隐藏的工具类 --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* --- 响应式：平板竖屏 --- */
@media (max-width: 960px) {
  .main-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .status-panel {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px 12px;
  }
  .status-panel h3 {
    grid-column: 1 / -1;
  }
}

/* --- 响应式：手机 --- */
@media (max-width: 600px) {
  #app {
    padding: 10px 10px;
  }
  .app-header {
    padding: 12px 0 8px;
  }
  .app-header h1 {
    font-size: 20px;
    letter-spacing: 1px;
  }
  .app-header .subtitle {
    font-size: 10px;
  }
  .main-layout {
    gap: 10px;
  }
  .status-panel {
    grid-template-columns: repeat(3, 1fr);
    padding: 10px 12px;
  }
  .stat-item {
    padding: 6px 0;
    font-size: 12px;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .stat-item .value {
    font-size: 13px;
  }
}

/* --- 横屏提示（可选） --- */
@media (max-height: 500px) and (orientation: landscape) {
  .app-header {
    padding: 8px 0 4px;
  }
  .app-header h1 {
    font-size: 18px;
  }
  .main-layout {
    margin-top: 8px;
    gap: 10px;
  }
}