/* ============ 电表监控可视化站点 ============ */

:root {
  --bg: #0f172a;
  --card: #1e293b;
  --card-border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --accent: #38bdf8;

  /* 告警等级配色(与 monitor.py LABELS 呼应) */
  --level-critical: #ef4444;
  --level-warn: #f59e0b;
  --level-normal: #22c55e;
  --level-unknown: #64748b;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 16px;
  max-width: 960px;
  margin: 0 auto;
}

/* ============ 顶部标题 ============ */
header {
  text-align: center;
  padding: 8px 0 20px;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 24px;
}
header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}
header .subtitle {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 4px;
}

/* ============ 当前状态仪表盘 ============ */
.dashboard {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 24px 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  margin-bottom: 24px;
}

.left-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.left-value {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.left-unit {
  color: var(--text-dim);
  font-size: 1rem;
}
.level-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 4px;
}
.level-badge.critical { background: var(--level-critical); color: #fff; }
.level-badge.warn     { background: var(--level-warn);     color: #1f2937; }
.level-badge.normal   { background: var(--level-normal);   color: #052e16; }
.level-badge.unknown  { background: var(--level-unknown);  color: #fff; }

/* 指标小卡片网格 */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  width: 100%;
}
.metric-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 12px 14px;
}
.metric-card .label {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-bottom: 4px;
}
.metric-card .value {
  font-size: 1.25rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.metric-card .unit {
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 400;
  margin-left: 2px;
}

.updated-at {
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* ============ 通用区块 ============ */
.section {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 20px 16px;
  margin-bottom: 24px;
}
.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-desc {
  color: var(--text-dim);
  font-size: 0.82rem;
  margin-bottom: 16px;
}

/* 图表容器 */
.chart {
  width: 100%;
  height: 360px;
}
.chart.tall { height: 420px; }

/* 趋势图窗口切换按钮 */
.window-tabs {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
  margin-bottom: 12px;
}
.window-tabs button {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  transition: all 0.15s;
}
.window-tabs button:hover { color: var(--text); }
.window-tabs button.active {
  background: var(--accent);
  color: #0f172a;
  font-weight: 600;
}

/* 月度汇总卡片 */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.summary-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 10px 12px;
}
.summary-card .label {
  color: var(--text-muted);
  font-size: 0.72rem;
}
.summary-card .value {
  font-size: 1.15rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ============ 错误/加载状态 ============ */
.state-box {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-dim);
}
.state-box.error { color: var(--level-critical); }
.loading-dots::after {
  content: "";
  display: inline-block;
  width: 1.5em;
  text-align: left;
  animation: dots 1.4s infinite steps(4);
}
@keyframes dots {
  0%   { content: ""; }
  25%  { content: "."; }
  50%  { content: ".."; }
  75%  { content: "..."; }
  100% { content: ""; }
}

/* ============ 页脚 ============ */
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 16px 0 8px;
  border-top: 1px solid var(--card-border);
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

.hidden { display: none !important; }

/* ============ 移动端适配 ============ */
@media (max-width: 600px) {
  body { padding: 10px; }
  header h1 { font-size: 1.25rem; }
  .left-value { font-size: 2.8rem; }
  .chart { height: 300px; }
  .chart.tall { height: 340px; }
  .section { padding: 16px 12px; }
}