:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-hover: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #e3b341;
  --tag-main: #1f3a5f;
  --tag-main-text: #58a6ff;
  --tag-rack: #3a1f5f;
  --tag-rack-text: #c57cff;
  --tag-cloud: #1f4a3a;
  --tag-cloud-text: #56d364;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */
header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 2rem;
  position: sticky;
  top: 0;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

.logo-accent { color: var(--accent); }

.subtitle {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.header-right { text-align: right; }

.summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text);
  justify-content: flex-end;
}

.last-checked {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

/* ── Status dots ── */
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-online  { background: var(--green); box-shadow: 0 0 6px var(--green); }
.dot-offline { background: var(--red); }
.dot-checking {
  background: var(--yellow);
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ── Main grid ── */
main {
  flex: 1;
  padding: 2rem;
}

.grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* ── Section labels ── */
.section-label {
  grid-column: 1 / -1;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  padding: 0.5rem 0 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.25rem;
}

/* ── Service card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.card-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.card-status-text {
  font-size: 0.7rem;
  color: var(--muted);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.25rem;
}

.card-domain {
  font-size: 0.75rem;
  font-family: ui-monospace, 'SFMono-Regular', monospace;
  color: var(--muted);
  opacity: 0.7;
}

.tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.tag-main   { background: var(--tag-main);  color: var(--tag-main-text); }
.tag-rack   { background: var(--tag-rack);  color: var(--tag-rack-text); }
.tag-cloud  { background: var(--tag-cloud); color: var(--tag-cloud-text); }
.tag-pub    { background: #2d2d1a; color: #d4a72c; }
.tag-auth   { background: #1a2d2d; color: #56b4b4; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1rem 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  header { padding: 1rem; }
  main { padding: 1rem; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .header-right { text-align: left; }
  .summary { justify-content: flex-start; }
}