:root {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --page: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-1: #3987e5; /* blue */
  --series-2: #d95926; /* orange */
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #e66767;
}

:root[data-theme="light"] {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --page: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #d03b3b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--page);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.topbar h1 {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.topbar .actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

button, .btn {
  font: inherit;
  background: var(--surface-1);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
}
button:hover { border-color: var(--text-muted); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.stat-tile .label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.stat-tile .value {
  font-size: 28px;
  font-weight: 600;
  font-variant-numeric: proportional-nums;
}

.stat-tile .value.status-critical { color: var(--status-critical); }

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.card h2 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 8px;
  border-bottom: 1px solid var(--gridline);
}

td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--gridline);
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

td.primary { color: var(--text-primary); }

tr:last-child td { border-bottom: none; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.badge.good { color: var(--status-good); }
.badge.critical { color: var(--status-critical); }

.chart-wrap { overflow-x: auto; }

.bar-tip {
  fill: var(--text-secondary);
  font-size: 10px;
}

.empty {
  color: var(--text-muted);
  font-size: 13px;
  padding: 12px 0;
}

/* --- login page --- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  text-align: center;
  padding: 24px;
}

.login-screen h1 { font-size: 20px; margin: 0; }
.login-screen p { color: var(--text-secondary); font-size: 14px; max-width: 320px; margin: 0; }
.login-screen .btn-primary {
  background: var(--series-1);
  color: #fff;
  border: none;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: 10px;
}
.login-screen .error { color: var(--status-critical); font-size: 13px; min-height: 16px; }