:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --up: #22c55e;
  --up-bg: #dcfce7;
  --degraded: #f59e0b;
  --degraded-bg: #fef3c7;
  --down: #ef4444;
  --down-bg: #fee2e2;
  --unknown: #cbd5e1;
  --maintenance: #3b82f6;
  --maintenance-bg: #dbeafe;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --surface: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --border: #334155;
    --up-bg: rgba(34, 197, 94, 0.15);
    --degraded-bg: rgba(245, 158, 11, 0.15);
    --down-bg: rgba(239, 68, 68, 0.15);
    --maintenance-bg: rgba(59, 130, 246, 0.15);
    --unknown: #475569;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}
.brand-mark {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--up), #16a34a);
}
.back-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.back-link:hover { color: var(--text); }

main.wrap { padding-top: 32px; padding-bottom: 64px; }

.overall {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  border-radius: 12px;
  margin-bottom: 28px;
  border: 1px solid var(--border);
}
.overall__indicator {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  flex-shrink: 0;
}
.overall h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}
.overall .muted { margin: 4px 0 0; font-size: 14px; }

.overall--up { background: var(--up-bg); border-color: var(--up); }
.overall--up .overall__indicator { background: var(--up); }
.overall--degraded { background: var(--degraded-bg); border-color: var(--degraded); }
.overall--degraded .overall__indicator { background: var(--degraded); }
.overall--down { background: var(--down-bg); border-color: var(--down); }
.overall--down .overall__indicator { background: var(--down); }
.overall--unknown,
.overall--loading { background: var(--surface); }
.overall--unknown .overall__indicator,
.overall--loading .overall__indicator { background: var(--unknown); }
.overall--loading .overall__indicator {
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 20px;
}
.card h2 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}
.card .muted.small { margin-top: -8px; margin-bottom: 16px; font-size: 13px; }

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* Service rows */
.service-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}
.service-row:first-child { border-top: none; padding-top: 0; }
.service-row:last-child { padding-bottom: 0; }
.service-row__label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}
.service-row__tag {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}
.service-row__status {
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}
.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--unknown);
}
.dot--up { background: var(--up); }
.dot--degraded { background: var(--degraded); }
.dot--down { background: var(--down); }
.dot--unknown { background: var(--unknown); }
.status-up { color: var(--up); }
.status-degraded { color: var(--degraded); }
.status-down { color: var(--down); }
.status-unknown { color: var(--muted); }

/* History grid */
.history-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  align-items: center;
  padding: 10px 0;
  gap: 16px;
  border-top: 1px solid var(--border);
}
.history-row:first-child { border-top: none; }
.history-row__label {
  font-size: 14px;
  font-weight: 500;
}
.history-row__bars {
  display: flex;
  gap: 2px;
  height: 28px;
}
.history-bar {
  flex: 1;
  background: var(--unknown);
  border-radius: 2px;
  min-width: 4px;
  position: relative;
  cursor: default;
}
.history-bar--up { background: var(--up); }
.history-bar--degraded { background: var(--degraded); }
.history-bar--down { background: var(--down); }
.history-bar:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--surface);
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 1;
}

.legend {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
}
.legend span { display: flex; align-items: center; gap: 6px; }

/* Incidents */
.incident {
  padding: 14px 0;
  border-top: 1px solid var(--border);
}
.incident:first-child { border-top: none; padding-top: 0; }
.incident__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}
.incident__badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 4px;
}
.incident__badge--minor { background: var(--maintenance-bg); color: var(--maintenance); }
.incident__badge--major { background: var(--degraded-bg); color: var(--degraded); }
.incident__badge--critical { background: var(--down-bg); color: var(--down); }
.incident__badge--maintenance { background: var(--maintenance-bg); color: var(--maintenance); }
.incident__title { font-weight: 600; }
.incident__meta { font-size: 13px; color: var(--muted); margin-top: 4px; }
.incident__body { margin-top: 8px; font-size: 14px; white-space: pre-wrap; }

.footer {
  margin-top: 40px;
  text-align: center;
}

@media (max-width: 600px) {
  .history-row { grid-template-columns: 1fr; gap: 6px; }
  .history-row__bars { height: 20px; }
  .overall { flex-direction: column; align-items: flex-start; text-align: left; }
}