:root {
  --bg: #181818;
  --bg-card: #202020;
  --bg-elevated: #242424;
  --border: #2c2c2c;
  --text: #e8e8e8;
  --text-dim: #9a9a9a;
  --accent: #ffc107;
  --ok: #4caf50;
  --warn: #ffb300;
  --down: #e53935;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: 880px; margin: 0 auto; padding: 0 16px; }

/* Header */
header { border-bottom: 1px solid var(--border); }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand { font-weight: 700; font-size: 1.1rem; }
.brand .accent { color: var(--accent); }
.nav-links { display: flex; gap: 8px; }
.nav-links a {
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.nav-links a:hover { color: var(--text); background: var(--bg-elevated); }
.nav-links a.active { color: var(--accent); }

/* Main */
main { flex: 1 0 auto; padding: 24px 0 48px; }
h1 { font-size: 1.5rem; margin: 0 0 4px; }
.subtitle { color: var(--text-dim); margin: 0 0 24px; }

/* Status grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: block;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card-head { display: flex; align-items: center; gap: 8px; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.down { background: var(--down); }
.card-name { font-weight: 600; }
.status-text {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card-desc { color: var(--text-dim); font-size: 0.9rem; margin: 8px 0 10px; }
.card-checked { font-size: 0.75rem; color: var(--text-dim); opacity: 0.8; }

/* Changelog */
.changelog { margin-top: 32px; }
.changelog h2 { font-size: 1.1rem; margin: 0 0 12px; }
.changelog ul { list-style: none; margin: 0; padding: 0; }
.changelog li {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.changelog li:last-child { border-bottom: 0; }
.changelog-date { color: var(--accent); font-weight: 600; flex: none; min-width: 54px; }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 20px 0; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.footer-note { color: var(--text-dim); font-size: 0.85rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px; }
.footer-links a { color: var(--text-dim); font-size: 0.85rem; }
.footer-links a:hover { color: var(--accent); }

/* Form */
.form { max-width: 460px; display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label, .field .label { font-size: 0.85rem; color: var(--text-dim); }
select, textarea {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  font-size: 0.95rem;
  width: 100%;
}
select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 96px; }
.radio-group { display: flex; flex-wrap: wrap; gap: 10px; }
.radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  cursor: pointer;
}
.radio-group input { accent-color: var(--accent); }
button {
  background: var(--accent);
  color: #181818;
  border: 0;
  border-radius: 8px;
  padding: 11px 18px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  width: 100%;
}
button:disabled { opacity: 0.6; cursor: not-allowed; }
.form-status { min-height: 20px; font-size: 0.9rem; }
.form-status.success { color: var(--ok); }
.form-status.error { color: var(--down); }

@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 420px) {
  .grid { grid-template-columns: 1fr; }
}