:root {
  color-scheme: dark;
  --bg: #0a0e17;
  --card: #131a29;
  --card-border: #232d42;
  --text: #e6e9ef;
  --text-muted: #8993a8;
  --up: #22c55e;
  --up-dim: rgba(34, 197, 94, 0.15);
  --down: #ef4444;
  --down-dim: rgba(239, 68, 68, 0.15);
  --unknown: #8993a8;
  --unknown-dim: rgba(137, 147, 168, 0.15);
  --warn: #f59e0b;
  --accent: #3b82f6;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 1160px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
  line-height: 1.4;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

nav a {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}

nav a:hover { text-decoration: none; border-color: var(--accent); color: var(--text); }
nav a.active { background: var(--card); color: var(--text); border-color: var(--card-border); }

h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: 1.05rem; margin: 0 0 0.75rem; }

/* ---- Cards & grid ---- */

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.grid {
  display: grid;
  gap: 0.9rem;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 760px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.detail-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 900px) {
  .detail-layout { grid-template-columns: 1fr; }
}

.stack { display: grid; gap: 1rem; }

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.4rem;
}

.stat-value { font-size: 1.6rem; font-weight: 700; }
.stat-sub { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.2rem; }

/* ---- Status ---- */

.status-dot {
  display: inline-block;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  margin-right: 0.45rem;
}
.status-dot.up { background: var(--up); box-shadow: 0 0 0 4px var(--up-dim); }
.status-dot.down { background: var(--down); box-shadow: 0 0 0 4px var(--down-dim); }
.status-dot.unknown { background: var(--unknown); box-shadow: 0 0 0 4px var(--unknown-dim); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge.up { background: var(--up-dim); color: var(--up); }
.badge.down { background: var(--down-dim); color: var(--down); }
.badge.unknown { background: var(--unknown-dim); color: var(--unknown); }

.stat-value.up { color: var(--up); }
.stat-value.down { color: var(--down); }
.stat-value.unknown { color: var(--unknown); }

/* ---- 24h segmented bar ---- */

.uptime-bar {
  display: flex;
  gap: 3px;
  margin-top: 0.6rem;
}
.uptime-bar .seg {
  flex: 1;
  height: 26px;
  border-radius: 3px;
  background: var(--unknown-dim);
}
.uptime-bar .seg.up { background: var(--up); }
.uptime-bar .seg.down { background: var(--down); }
.uptime-bar .seg.nodata { background: var(--card-border); }

/* ---- Site header ---- */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.site-header .title-block { display: flex; align-items: center; gap: 0.75rem; }

.site-header h1 { margin: 0; }
.site-header .url { color: var(--text-muted); font-size: 0.85rem; }

.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

button, .btn {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}
button:hover, .btn:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: white; }
button.danger:hover { border-color: var(--down); color: var(--down); }

/* ---- Incidents ---- */

.incident {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--card-border);
}
.incident:last-child { border-bottom: none; }
.incident .error-msg { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.15rem; }
.incident .meta { text-align: right; font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; }

.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
}
.empty-state .headline { font-size: 1rem; color: var(--text); margin-bottom: 0.25rem; }

/* ---- Site list (index.html) ---- */

.site-card {
  display: block;
  padding: 1rem 1.1rem;
}
.site-card:hover { text-decoration: none; border-color: var(--accent); }
.site-card .row1 { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; }
.site-card .name { font-weight: 600; color: var(--text); }
.site-card .url { color: var(--text-muted); font-size: 0.8rem; }
.site-card .stats {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.site-card .stats strong { color: var(--text); display: block; font-size: 0.95rem; }

.chip {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
}
.chip.ok { background: var(--up-dim); color: var(--up); }
.chip.warn { background: rgba(245, 158, 11, 0.15); color: var(--warn); }
.chip.crit { background: var(--down-dim); color: var(--down); }
.chip.muted { background: var(--unknown-dim); color: var(--unknown); }

/* ---- Tables (admin) ---- */

.table-wrap {
  padding: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--card-border); font-size: 0.88rem; white-space: nowrap; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
td .actions button { padding: 0.3rem 0.6rem; font-size: 0.78rem; }

/* ---- Forms ---- */

form.card {
  display: grid;
  gap: 0.9rem;
  max-width: 520px;
}
form label { display: grid; gap: 0.3rem; font-size: 0.85rem; color: var(--text-muted); }
input, select {
  padding: 0.55rem 0.65rem;
  font-size: 0.9rem;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text);
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
form .form-actions { display: flex; gap: 0.5rem; }

.section { margin-top: 2rem; }
.text-muted { color: var(--text-muted); }

/* ---- Mobile ---- */

@media (max-width: 640px) {
  body { padding: 1rem 1rem 3rem; }

  h1 { font-size: 1.2rem; }

  nav { gap: 0.4rem; margin-bottom: 1.1rem; }
  nav a { padding: 0.4rem 0.75rem; font-size: 0.8rem; }

  .card { padding: 0.9rem 1rem; }

  .site-header { flex-direction: column; align-items: stretch; }
  .site-header .title-block { gap: 0.6rem; }
  .site-header h1 { font-size: 1.15rem; }
  .site-header .actions { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .site-header .actions button { width: 100%; }

  button, .btn {
    padding: 0.6rem 0.9rem;
    font-size: 0.85rem;
    min-height: 42px;
  }

  .stat-value { font-size: 1.35rem; }

  .uptime-bar { gap: 2px; }
  .uptime-bar .seg { height: 22px; }

  .incident {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
  .incident .meta { text-align: left; }

  .site-card .stats {
    flex-wrap: wrap;
    gap: 0.9rem 1.25rem;
  }

  form.card { max-width: 100%; }

  .detail-layout, .stack { gap: 0.75rem; }
}