:root {
  --bg: #0f0f0f;
  --card: #161616;
  --card-hover: #1c1c1c;
  --border: #262626;
  --border-hover: #3a3a3a;
  --text: #e0e0e0;
  --strong: #fff;
  --muted: #777;
  --accent: #4f8ef7;
  --ok: #4ade80;
  --warn: #f5b041;
  --danger: #f87171;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  color-scheme: dark;
}

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

body {
  min-height: 100dvh;
  background:
    radial-gradient(60rem 30rem at 50% -10rem, rgba(79, 142, 247, 0.08), transparent),
    var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.5;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
h1 { font-size: 2rem; color: var(--strong); letter-spacing: -0.03em; line-height: 1.1; }
.sub { color: var(--muted); font-family: var(--mono); font-size: 0.85rem; margin-top: 0.25rem; }

.login, .session {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.45rem 0.85rem; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted);
  font-size: 0.85rem; text-decoration: none; white-space: nowrap;
}
.login:hover { color: var(--text); border-color: var(--border-hover); }

h2 {
  display: flex; align-items: baseline; gap: 0.6rem;
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); margin-bottom: 0.9rem;
}
.note { text-transform: none; letter-spacing: 0; font-weight: 400; color: #555; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0.75rem; }

.card {
  display: flex; flex-direction: column; gap: 0.4rem;
  padding: 1rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: inherit; text-decoration: none;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.card:hover { background: var(--card-hover); border-color: var(--border-hover); transform: translateY(-1px); }
.card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.card-maint { border-color: rgba(245, 176, 65, 0.35); }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.name { color: var(--strong); font-weight: 600; }
.desc { color: #999; font-size: 0.88rem; }
.host { margin-top: auto; padding-top: 0.25rem; color: var(--accent); font-family: var(--mono); font-size: 0.78rem; overflow-wrap: anywhere; }
.tag { margin-left: 0.4rem; color: var(--muted); }

.dot { flex-shrink: 0; width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--muted); }
.dot.up { background: var(--ok); box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.15); }
.dot.down { background: var(--danger); box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15); }
.status.maint {
  font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  padding: 0.05rem 0.4rem; border-radius: 4px;
  background: rgba(245, 176, 65, 0.15); color: var(--warn);
}
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.empty { color: var(--muted); text-align: center; padding: 3rem 0; }

@media (max-width: 520px) {
  main { padding-top: 2rem; }
  h1 { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
  .card:hover { transform: none; }
}