/* ColdWatch dashboard — dataviz-skill palette (references/palette.md), light+dark selected. */

:root {
  --surface-1: #fcfcfb;
  --page: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --border: rgba(11, 11, 11, 0.10);
  --series-blue: #2a78d6;
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #d03b3b;
  --safe-band-fill: rgba(42, 120, 214, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --surface-1: #1a1a19;
    --page: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --gridline: #2c2c2a;
    --border: rgba(255, 255, 255, 0.10);
    --series-blue: #3987e5;
    --status-good: #0ca30c;
    --status-warning: #fab219;
    --status-serious: #ec835a;
    --status-critical: #e66767;
    --safe-band-fill: rgba(57, 135, 229, 0.12);
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
}
main { max-width: 920px; margin: 0 auto; padding: 0 20px 48px; }
code { background: var(--gridline); padding: 1px 5px; border-radius: 4px; font-size: 0.9em; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px; border-bottom: 1px solid var(--border); background: var(--surface-1);
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo { font-size: 32px; }
.brand h1 { margin: 0; font-size: 20px; }
.tagline { margin: 2px 0 0; color: var(--text-secondary); font-size: 14px; max-width: 60ch; }

.wifi-status { font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 999px; }
.wifi-status--up { color: var(--status-good); background: color-mix(in srgb, var(--status-good) 12%, transparent); }
.wifi-status--down { color: var(--status-critical); background: color-mix(in srgb, var(--status-critical) 14%, transparent); }

.thesis { margin-top: 20px; font-size: 15px; }
.thesis p { margin: 0 0 10px; color: var(--text-secondary); }
.thesis strong { color: var(--text-primary); }

.controls { margin-top: 24px; padding: 16px; background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; }
.scenario-list { display: flex; gap: 8px; flex-wrap: wrap; }
.scenario-btn {
  padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: transparent; color: var(--text-primary); font-size: 13px; cursor: pointer;
}
.scenario-btn.active { background: var(--series-blue); border-color: var(--series-blue); color: #fff; }
.scenario-desc { margin: 12px 0 0; color: var(--text-secondary); font-size: 13px; }

.playback { display: flex; align-items: center; gap: 14px; margin-top: 14px; flex-wrap: wrap; }
.playback button, .playback select {
  padding: 7px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--page); color: var(--text-primary); font-size: 13px; cursor: pointer;
}
.offline-toggle { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); }
.progress { flex: 1 1 160px; height: 6px; background: var(--gridline); border-radius: 999px; overflow: hidden; min-width: 120px; }
.progress-fill { height: 100%; width: 0%; background: var(--series-blue); transition: width 0.2s linear; }

.stats { display: flex; gap: 16px; margin-top: 16px; flex-wrap: wrap; }
.stat { flex: 1 1 160px; padding: 14px; background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; }
.stat-label { display: block; font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-value { display: block; font-size: 22px; font-weight: 600; margin-top: 4px; font-variant-numeric: tabular-nums; }

.alert-banner {
  margin-top: 16px; padding: 12px 16px; border-radius: 10px; font-weight: 600; font-size: 14px;
}
.alert-banner--warning { background: color-mix(in srgb, var(--status-warning) 20%, var(--surface-1)); color: var(--text-primary); border: 1px solid var(--status-warning); }
.alert-banner--critical { background: color-mix(in srgb, var(--status-critical) 18%, var(--surface-1)); color: var(--text-primary); border: 1px solid var(--status-critical); }

.chart-section { margin-top: 16px; background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.chart { position: relative; width: 100%; }

.ts-chart-root { position: relative; }
.ts-gridline { stroke: var(--gridline); stroke-width: 1; }
.ts-axis-label { fill: var(--text-muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.ts-safe-band { fill: var(--safe-band-fill); }
.ts-band-label { fill: var(--text-muted); font-size: 10px; }
.ts-line { stroke: var(--series-blue); stroke-width: 2; }
.ts-marker-warning { fill: var(--status-warning); stroke: var(--surface-1); stroke-width: 2; }
.ts-marker-critical { fill: var(--status-critical); stroke: var(--surface-1); stroke-width: 2; }
.ts-crosshair { stroke: var(--text-muted); stroke-width: 1; stroke-dasharray: 3 3; }
.ts-tooltip {
  position: absolute; transform: translateX(-50%); background: var(--surface-1);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 12px;
  pointer-events: none; box-shadow: 0 4px 12px rgba(0,0,0,0.15); white-space: nowrap; z-index: 2;
}
.ts-tooltip-time { color: var(--text-muted); font-size: 11px; }
.ts-tooltip-value { color: var(--text-primary); font-weight: 700; font-size: 15px; font-variant-numeric: tabular-nums; }
.ts-tooltip-alert { margin-top: 4px; font-weight: 600; }
.ts-tooltip-alert--warning { color: var(--status-warning); }
.ts-tooltip-alert--critical { color: var(--status-critical); }

.alert-hardware { display: flex; gap: 24px; margin-top: 16px; }
.hw-indicator { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); }
.hw-buzzer { font-size: 20px; opacity: 0.3; transition: opacity 0.15s; }
.hw-buzzer.active { opacity: 1; filter: drop-shadow(0 0 6px var(--status-critical)); }
.hw-led {
  width: 14px; height: 14px; border-radius: 50%; background: var(--gridline);
  border: 1px solid var(--border); transition: background 0.15s, box-shadow 0.15s;
}
.hw-led.active { background: var(--status-critical); box-shadow: 0 0 10px var(--status-critical); }

.log-section { margin-top: 20px; }
.log-section h2 { font-size: 15px; }
.alert-log { list-style: none; margin: 0; padding: 0; max-height: 220px; overflow-y: auto; }
.alert-row { padding: 8px 10px; border-radius: 8px; font-size: 12.5px; margin-bottom: 6px; border: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.alert-row--warning { border-left: 3px solid var(--status-warning); }
.alert-row--critical { border-left: 3px solid var(--status-critical); }

.engine-explainer { margin-top: 24px; padding: 16px; background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; font-size: 13.5px; color: var(--text-secondary); }
.engine-explainer h2 { font-size: 15px; color: var(--text-primary); margin-top: 0; }
.engine-explainer li { margin-bottom: 6px; }
.hint { color: var(--text-muted); font-size: 12px; }

.site-footer { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 12.5px; }
.site-footer p { margin: 4px 0; }
.site-footer a { color: var(--series-blue); }