/* ==========================================================================
   金属行情中枢 · 基础样式与布局
   视觉参考 Ant Design Pro：浅色内容区 + 克制的描边卡片 + 高密度数据表格
   ========================================================================== */

:root {
  /* 主色 */
  --primary: #1668dc;
  --primary-1: #e8f1ff;
  --primary-2: #cfe2ff;
  --primary-6: #1668dc;
  --primary-7: #0f52b5;

  /* 金属主题强调色 */
  --gold: #b8860b;
  --gold-1: #fdf6e3;
  --silver: #7b8794;
  --copper: #b05f2e;
  --ree: #7a4fd6;

  /* 涨跌（A 股约定：涨红跌绿） */
  --up: #d4351c;
  --up-bg: #fdecea;
  --down: #12855b;
  --down-bg: #e6f6ef;
  --flat: #7b8794;

  /* 中性 */
  --bg: #f4f6f9;
  --bg-sider: #ffffff;
  --card: #ffffff;
  --text: #1c2430;
  --text-2: #55606e;
  --text-3: #8a94a3;
  --border: #e6eaf0;
  --border-2: #eff2f6;

  --radius: 8px;
  --radius-sm: 6px;
  --shadow-1: 0 1px 2px rgba(16, 26, 44, 0.04);
  --shadow-2: 0 4px 16px rgba(16, 26, 44, 0.08);
  --shadow-3: 0 8px 28px rgba(16, 26, 44, 0.12);

  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --sider-w: 216px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d3dae3; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #bcc6d2; }

/* ---------------------------------------------------------------- 布局 */
.app {
  display: flex;
  min-height: 100vh;
}

.sider {
  width: var(--sider-w);
  flex: 0 0 var(--sider-w);
  background: var(--bg-sider);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  transition: width 0.18s ease, flex-basis 0.18s ease;
  z-index: 20;
}

.app.collapsed .sider { width: 64px; flex-basis: 64px; }
.app.collapsed .sider__title,
.app.collapsed .nav__group,
.app.collapsed .nav__item span:not(.nav__icon),
.app.collapsed .nav__metals,
.app.collapsed .sider__status span:not(.dot) { display: none; }
.app.collapsed .nav__item { justify-content: center; padding: 9px 0; }

.sider__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  border-bottom: 1px solid var(--border-2);
}

.sider__logo {
  width: 32px; height: 32px;
  flex: 0 0 32px;
  border-radius: 8px;
  background: linear-gradient(140deg, #2f7ee0, #1652b8);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.5px;
  box-shadow: 0 2px 8px rgba(22, 104, 220, 0.28);
}

.sider__title { display: flex; flex-direction: column; line-height: 1.25; }
.sider__title strong { font-size: 14px; letter-spacing: 0.2px; }
.sider__title span { font-size: 11px; color: var(--text-3); letter-spacing: 0.6px; }

.sider__nav { flex: 1; overflow-y: auto; padding: 10px 8px 20px; }

.nav__group {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.8px;
  padding: 14px 10px 6px;
  text-transform: uppercase;
}

.nav__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 13.5px;
  transition: background 0.15s, color 0.15s;
  cursor: pointer;
}

.nav__item + .nav__item { margin-top: 2px; }

.nav__item:hover { background: #f2f5f9; color: var(--text); }

.nav__item.is-active {
  background: var(--primary-1);
  color: var(--primary-6);
  font-weight: 600;
}

.nav__icon {
  width: 18px;
  text-align: center;
  font-size: 14px;
  opacity: 0.85;
}

.nav__metals { display: flex; flex-direction: column; }

.nav__metal {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 12px 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
}
.nav__metal:hover { background: #f2f5f9; color: var(--text); }
.nav__metal.is-active { background: var(--primary-1); color: var(--primary-6); font-weight: 600; }

.nav__metal-sym {
  width: 26px; height: 20px;
  flex: 0 0 26px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  display: grid;
  place-items: center;
  background: #eef2f7;
  color: var(--text-2);
  font-family: var(--mono);
}

.nav__metal .pct { margin-left: auto; font-size: 11.5px; font-family: var(--mono); }

.sider__foot { padding: 12px 16px 16px; border-top: 1px solid var(--border-2); }
.sider__status { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-3); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--flat); flex: 0 0 7px; }
.dot.ok { background: #16a34a; box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15); }
.dot.busy { background: #d97706; box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15); animation: pulse 1.2s infinite; }
.dot.err { background: var(--up); }

@keyframes pulse { 50% { opacity: 0.35; } }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.header {
  height: 56px;
  flex: 0 0 56px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 15;
}

.header__left, .header__right { display: flex; align-items: center; gap: 12px; }

.icon-btn {
  width: 30px; height: 30px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  cursor: pointer;
  font-size: 15px;
}
.icon-btn:hover { background: #f2f5f9; }

.crumb { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2); }
.crumb strong { color: var(--text); font-weight: 600; font-size: 15px; }
.crumb .sep { color: var(--text-3); }

.header__clock { font-size: 12.5px; color: var(--text-3); font-family: var(--mono); }

.content { flex: 1; padding: 20px; max-width: 1680px; width: 100%; margin: 0 auto; }

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px 22px;
  font-size: 11.5px;
  color: var(--text-3);
  border-top: 1px solid var(--border-2);
  margin-top: 8px;
}

/* ------------------------------------------------------------ 页面标题 */
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.page-head h1 { margin: 0; font-size: 20px; font-weight: 650; letter-spacing: -0.2px; }
.page-head p { margin: 4px 0 0; color: var(--text-3); font-size: 12.5px; }
.page-head__actions { display: flex; align-items: center; gap: 8px; }