:root {
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #1a1d23;
  --muted: #5f6672;
  --border: #e3e5e9;
  --up: #1f9d55;
  --up-bg: #e6f7ec;
  --down: #d64545;
  --down-bg: #fceaea;
  --checking: #b8860b;
  --checking-bg: #fbf3dd;
  --disabled: #8a8f98;
  --disabled-bg: #eceef1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --card-bg: #1e2128;
    --text: #f1f2f4;
    --muted: #9aa0ab;
    --border: #2b2f38;
    --up-bg: #103b23;
    --down-bg: #3d1e1e;
    --checking-bg: #3a2f10;
    --disabled-bg: #2a2d33;
  }
}

* { box-sizing: border-box; }

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

.page-header {
  padding: 2.5rem 1.5rem 1rem;
  text-align: center;
}

.page-header h1 {
  margin: 0 0 0.4rem;
  font-size: 2rem;
}

.page-header p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

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

.card-icon {
  width: 40px;
  height: 40px;
}

.badge {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  color: var(--checking);
  background: var(--checking-bg);
}

.card[data-status="up"] .badge {
  color: var(--up);
  background: var(--up-bg);
}

.card[data-status="down"] .badge {
  color: var(--down);
  background: var(--down-bg);
}

.card[data-status="disabled"] .badge {
  color: var(--disabled);
  background: var(--disabled-bg);
}

.card-name {
  margin: 0;
  font-size: 1.15rem;
}

.card-description {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  flex-grow: 1;
}

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

.open-button {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.last-check {
  color: var(--muted);
  font-size: 0.8rem;
}