/* Default to dark mode (also used when the browser preference is unknown). */
:root {
  --operational: #3fb950;
  --degraded: #d29922;
  --major_outage: #f85149;
  --unknown: #6e7681;
  --bg: #0d1117;
  --card: #161b22;
  --text: #e6edf3;
  --muted: #8b949e;
  --border: #30363d;
  --link: #58a6ff;
}

/* Switch to light only when the browser explicitly prefers it. */
@media (prefers-color-scheme: light) {
  :root {
    --operational: #2da44e;
    --degraded: #d4a72c;
    --major_outage: #cf222e;
    --unknown: #8c959f;
    --bg: #f6f8fa;
    --card: #ffffff;
    --text: #1f2328;
    --muted: #656d76;
    --border: #d0d7de;
    --link: #0969da;
  }
}
* { box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; margin: 0; background: var(--bg); color: var(--text); }
header { background: var(--card); border-bottom: 1px solid var(--border); padding: 1.25rem 2rem; }
header h1 { margin: 0; font-size: 1.5rem; }
main { max-width: 1100px; margin: 0 auto; padding: 2rem; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.group-title { font-size: 1.05rem; font-weight: 600; margin: 1.75rem 0 0.75rem; padding-bottom: 0.35rem; border-bottom: 1px solid var(--border); text-transform: uppercase; }
.group-title:first-child { margin-top: 0; }
.group-label { color: var(--muted); font-weight: 600; text-transform: uppercase; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; align-items: start; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; margin-bottom: 1rem; }
.service-grid .card { margin-bottom: 0; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.card-foot { display: flex; align-items: baseline; justify-content: space-between; gap: 0.75rem; margin-top: 0.5rem; }
.card-foot .meta { margin-top: 0; }
.section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; }
.section-head h3 { margin: 0.5rem 0; }
.sla { display: inline-flex; align-items: baseline; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--operational); white-space: nowrap; }
.sla-good { color: var(--operational); }
.sla-warning { color: var(--degraded); }
.sla-danger { color: var(--major_outage); }
body[data-service] .sla { justify-content: center; gap: 0.12em; font-size: 2rem; line-height: 1; }
.sla-num { display: inline-block; }
.sla-percent { display: inline-block; font-size: 0.75em; line-height: 1; }
.sla-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; margin-top: 0.35rem; }
.sla-card { background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border); border-radius: 0.75rem; padding: 0.9rem 0.95rem; text-align: center; }
.sla-card .sla-label { display: block; font-size: 0.8rem; color: var(--muted); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 0.45rem; }
#controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
#controls label { display: inline-flex; align-items: center; gap: 0.5rem; margin: 0; font-size: 0.95rem; }
#controls select { min-width: 10rem; }
#rt-chart { display: block; width: 100%; height: 240px; max-width: 100%; border-radius: 0.5rem; }

@media (max-width: 768px) {
  .service-grid { grid-template-columns: 1fr; }
  main { padding: 1rem; }
  header { padding: 1rem 1.25rem; }
  header h1 { font-size: 1.25rem; }
  .card-head { flex-wrap: wrap; }
}
.status { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600; color: #fff; text-transform: capitalize; }
.status-operational, .status-success { background: var(--operational); }
.status-degraded { background: var(--degraded); }
.status-major_outage, .status-outage { background: var(--major_outage); }
.status-unknown { background: var(--unknown); }
.timeline { display: flex; gap: 2px; align-items: flex-end; height: 34px; margin-top: 0.75rem; }
.bar { flex: 1; min-width: 2px; border-radius: 2px; height: 100%; }
a.bar { text-decoration: none; }
a.bar:hover { outline: 1px solid var(--text); outline-offset: 1px; }
.bar-operational, .bar-success { background: var(--operational); }
.bar-degraded { background: var(--degraded); }
.bar-major_outage, .bar-outage { background: var(--major_outage); }
.bar-unknown { background: var(--unknown); opacity: 0.5; }
.bar-old { filter: brightness(0.75); }
.meta { color: var(--muted); font-size: 0.9rem; margin-top: 0.25rem; }
.incidents { list-style: none; margin: 0.5rem 0 0; padding: 0; }
.incident { border-top: 1px solid var(--border); padding: 0.85rem 0; }
.incident:first-child { border-top: none; }
.incident-head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.75rem; }
.incident-left { display: flex; align-items: center; gap: 0.6rem; min-width: 0; }
.incident-msg { font-weight: 600; word-break: break-word; }
.incident-locs { color: var(--muted); font-size: 0.85rem; white-space: nowrap; text-align: right; }
.incident .meta { margin-top: 0.35rem; }