:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --page-plane: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --series-1: #2a78d6;
  --seq-300: #6da7ec;
  --seq-500: #256abf;
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-critical: #d03b3b;
}

@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --page-plane: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --gridline: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --series-1: #3987e5;
    --seq-300: #5598e7;
    --seq-500: #1c5cab;
    --status-good: #0ca30c;
    --status-warning: #fab219;
    --status-critical: #d03b3b;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --page-plane: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --series-1: #3987e5;
  --seq-300: #5598e7;
  --seq-500: #1c5cab;
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-critical: #d03b3b;
}

* {
  box-sizing: border-box;
}

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

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

nav.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

nav.tabs button {
  background: none;
  border: none;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

nav.tabs button.active {
  color: var(--text-primary);
  border-bottom-color: var(--series-1);
}

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

.card h2 {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
}

.hero-figure {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.1;
}

.hero-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

.status-pill.good {
  color: var(--status-good);
  background: color-mix(in srgb, var(--status-good) 14%, transparent);
}

.status-pill.critical {
  color: var(--status-critical);
  background: color-mix(in srgb, var(--status-critical) 14%, transparent);
}

.device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--gridline);
  gap: 12px;
}

.device-row:last-child {
  border-bottom: none;
}

.device-name {
  font-weight: 600;
  font-size: 14px;
}

.device-meta {
  font-size: 12px;
  color: var(--text-muted);
}

.badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 3px 8px;
  border-radius: 6px;
}

.badge.shed {
  color: var(--status-critical);
  background: color-mix(in srgb, var(--status-critical) 14%, transparent);
}

.badge.active {
  color: var(--status-good);
  background: color-mix(in srgb, var(--status-good) 14%, transparent);
}

.badge.override {
  color: var(--status-warning);
  background: color-mix(in srgb, var(--status-warning) 20%, transparent);
}

input,
select {
  font: inherit;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-1);
  color: var(--text-primary);
}

button.primary {
  font: inherit;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  background: var(--series-1);
  color: white;
  cursor: pointer;
}

button.secondary {
  font: inherit;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
}

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

th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 6px 8px;
  border-bottom: 1px solid var(--gridline);
}

td {
  padding: 8px;
  border-bottom: 1px solid var(--gridline);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}