:root {
  --bg: #0b1020;
  --bg-soft: #101733;
  --card: #131b3a;
  --card-hover: #182246;
  --line: rgba(148, 163, 184, .14);
  --text: #e2e8f0;
  --muted: #8fa0bf;
  --accent: #38bdf8;
  --green: #34d399;
  --yellow: #fbbf24;
  --orange: #fb923c;
  --red: #f87171;
  --blue: #60a5fa;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(56, 189, 248, .08), transparent),
    radial-gradient(900px 400px at -10% 20%, rgba(99, 102, 241, .07), transparent),
    var(--bg);
}

main { max-width: 1440px; margin: 0 auto; padding: 20px 24px 40px; }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 16, 32, .82);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 50;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: #06131f; background: linear-gradient(135deg, #7dd3fc, #38bdf8 60%, #818cf8);
  box-shadow: 0 4px 18px rgba(56, 189, 248, .35);
}
.brand h1 { font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.brand .sub { font-size: 11px; color: var(--muted); letter-spacing: 1.2px; margin-top: 2px; }

.topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.clock-box { text-align: right; line-height: 1.2; }
.clock { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--accent); }
.date { display: block; font-size: 11px; color: var(--muted); }

.status {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-soft);
  font-size: 13px;
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.status.ok .dot { background: var(--green); box-shadow: 0 0 0 0 rgba(52, 211, 153, .6); animation: pulse 2s infinite; }
.status.ok #statusText { color: var(--green); }
.status.warn .dot { background: var(--yellow); animation: blink 1s infinite; }
.status.warn #statusText { color: var(--yellow); }
.status.err .dot { background: var(--red); animation: blink .7s infinite; }
.status.err #statusText { color: var(--red); }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .5); }
  70% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}
@keyframes blink { 50% { opacity: .25; } }

.refresh-box { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.countdown b { color: var(--accent); font-variant-numeric: tabular-nums; }
.btn {
  padding: 7px 14px; border-radius: 8px; cursor: pointer;
  border: 1px solid rgba(56, 189, 248, .4); color: var(--accent);
  background: rgba(56, 189, 248, .08); font-size: 13px;
  transition: all .15s;
}
.btn:hover { background: rgba(56, 189, 248, .18); }

/* ---------- 预警条 ---------- */
.alert-bar {
  margin-bottom: 16px;
  border: 1px solid rgba(248, 113, 113, .35);
  background: rgba(248, 113, 113, .08);
  border-radius: 12px; padding: 12px 16px;
  font-size: 14px; line-height: 1.7;
}
.alert-bar .ab-title {
  font-weight: 700; color: var(--red); margin-right: 10px;
}
.alert-tag {
  display: inline-block; margin: 2px 6px 2px 0; padding: 2px 10px;
  border-radius: 999px; font-size: 12px; border: 1px solid;
}
.alert-tag.orange { color: var(--orange); border-color: rgba(251, 146, 60, .5); background: rgba(251, 146, 60, .1); }
.alert-tag.yellow { color: var(--yellow); border-color: rgba(251, 191, 36, .5); background: rgba(251, 191, 36, .1); }
.alert-tag.blue { color: var(--blue); border-color: rgba(96, 165, 250, .5); background: rgba(96, 165, 250, .1); }

/* ---------- 统计 ---------- */
.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px; margin-bottom: 26px;
}
.stat-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px 18px; position: relative; overflow: hidden;
}
.stat-card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px;
  background: linear-gradient(180deg, var(--accent), transparent);
}
.stat-label { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.stat-value { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-value small { font-size: 13px; color: var(--muted); font-weight: 400; margin-left: 3px; }
.stat-extra { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ---------- 县区卡片 ---------- */
.section-head {
  display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px;
}
.section-head h2 { font-size: 16px; }
.section-note { font-size: 12px; color: var(--muted); }
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px; margin-bottom: 28px;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 16px; cursor: pointer; position: relative;
  transition: transform .15s, border-color .15s, background .15s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(56, 189, 248, .45); background: var(--card-hover); }
.card-top { display: flex; justify-content: space-between; align-items: flex-start; }
.card-name { font-size: 15px; font-weight: 600; }
.card-en { font-size: 10px; color: var(--muted); letter-spacing: .8px; margin-top: 2px; }
.card-icon { width: 44px; height: 44px; color: var(--accent); }
.card-icon svg { width: 100%; height: 100%; }
.card-main { display: flex; align-items: baseline; gap: 8px; margin: 10px 0 2px; }
.card-temp { font-size: 34px; font-weight: 700; font-variant-numeric: tabular-nums; }
.card-temp small { font-size: 16px; color: var(--muted); }
.card-cond { font-size: 14px; color: var(--accent); }
.card-spark { margin: 8px 0 10px; height: 34px; }
.card-spark canvas { width: 100%; height: 34px; display: block; }
.card-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 10px; font-size: 12px; color: var(--muted); }
.card-meta b { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
.card-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; min-height: 20px; }
.badge { font-size: 11px; padding: 2px 9px; border-radius: 999px; border: 1px solid; }
.badge.orange { color: var(--orange); border-color: rgba(251, 146, 60, .55); background: rgba(251, 146, 60, .12); }
.badge.yellow { color: var(--yellow); border-color: rgba(251, 191, 36, .55); background: rgba(251, 191, 36, .12); }
.badge.blue { color: var(--blue); border-color: rgba(96, 165, 250, .55); background: rgba(96, 165, 250, .12); }
.card.missing { opacity: .55; }
.card.missing .card-temp { color: var(--muted); font-size: 18px; }

/* ---------- 面板 / 图表 ---------- */
.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 18px 20px 14px; margin-bottom: 20px;
}
.panel-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; }
.panel-head h2 { font-size: 15px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px; }
.legend-chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; color: var(--muted); padding: 3px 9px;
  border: 1px solid var(--line); border-radius: 999px; cursor: pointer; user-select: none;
  transition: opacity .15s;
}
.legend-chip .sw { width: 8px; height: 8px; border-radius: 2px; }
.legend-chip.off { opacity: .3; }
.chart-wrap { position: relative; height: 300px; }
.chart-wrap canvas { width: 100%; height: 100%; display: block; }
.modal-chart { height: 240px; }
.hint { font-size: 11px; color: var(--muted); margin-top: 8px; }

footer { text-align: center; font-size: 12px; color: var(--muted); padding: 10px 0 20px; }

/* ---------- 弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal.hidden { display: none; }
.modal-mask { position: absolute; inset: 0; background: rgba(4, 8, 18, .72); backdrop-filter: blur(4px); }
.modal-body {
  position: relative; width: min(860px, 94vw); max-height: 88vh; overflow-y: auto;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 18px;
  padding: 20px 24px 24px; box-shadow: 0 24px 80px rgba(0, 0, 0, .5);
}
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-head h3 { font-size: 17px; }
.icon-btn {
  width: 32px; height: 32px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { color: var(--text); border-color: var(--accent); }
.modal-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px; margin-bottom: 18px;
}
.modal-grid .mg {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px;
}
.mg .k { font-size: 11px; color: var(--muted); }
.mg .v { font-size: 16px; font-weight: 600; margin-top: 3px; font-variant-numeric: tabular-nums; }
.modal-body h4 { font-size: 13px; color: var(--muted); margin-bottom: 8px; }

/* ---------- Toast ---------- */
#toast {
  position: fixed; right: 20px; top: 76px; z-index: 200;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  background: rgba(19, 27, 58, .95); border: 1px solid rgba(251, 191, 36, .5);
  color: var(--text); font-size: 13px; padding: 10px 16px; border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .4);
  animation: slidein .25s ease;
  max-width: 320px;
}
@keyframes slidein { from { transform: translateX(30px); opacity: 0; } to { transform: none; opacity: 1; } }

.hidden { display: none !important; }

@media (max-width: 640px) {
  .topbar { padding: 12px 16px; }
  main { padding: 14px 14px 30px; }
  .clock-box { display: none; }
  .card-temp { font-size: 28px; }
}