:root {
  --bg: #0b1020;
  --card: #111827;
  --border: #1f2937;
  --border-2: #374151;
  --text: #f3f4f6;
  --muted: #9ca3af;
  --link: #38bdf8;
  --accent: #dc2626;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

.container { margin: 24px; }
.page-title { margin: 0 0 8px 0; }

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  row-gap: 8px;
  margin-bottom: 20px;
  align-items: center;
}

.nav-link { color: var(--muted); text-decoration: none; }
.nav-link.active { color: #e5e7eb; font-weight: 600; }
.nav-sep { color: #4b5563; }

a { color: var(--link); }

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.35);
}

.row { display: flex; flex-wrap: wrap; gap: 16px; }
.col { flex: 1 1 320px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { background: var(--card); position: sticky; top: 0; }

.muted { color: var(--muted); font-size: 12px; }
.value-lg { font-size: 26px; font-weight: 600; }
.value-sub { font-size: 12px; color: var(--muted); }

.tag { display: inline-block; padding: 2px 6px; border-radius: 999px; font-size: 11px; }
.tag-up { background: #064e3b; color: #6ee7b7; }
.tag-down { background: #7f1d1d; color: #fecaca; }
.tag-flat { background: #1f2937; color: #9ca3af; }
.tag-missing { background: #4b5563; color: #e5e7eb; }
.tag-ok { background: #022c22; color: #6ee7b7; }
.tag-bad { background: #450a0a; color: #fecaca; }

.interval-tabs { display: flex; gap: 16px; margin-bottom: 16px; }
.interval-tab {
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border-2);
  transition: all 0.2s;
  user-select: none;
}
.interval-tab:hover { border-color: #6b7280; color: #e5e7eb; }
.interval-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}