:root {
    color-scheme: light dark;
    --bg: #ffffff;
    --fg: #1f2329;
    --muted: #6b7280;
    --accent: #2563eb;
    --border: #e5e7eb;
    --card: #f9fafb;
    --ok: #16a34a;
    --warn: #d97706;
    --bad: #dc2626;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0b0d10;
        --fg: #e5e7eb;
        --muted: #9ca3af;
        --border: #1f2937;
        --card: #11151a;
    }
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; font-family: -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--fg); }

.topbar { display: flex; align-items: center; padding: 0.75rem 1.25rem; border-bottom: 1px solid var(--border); background: var(--card); gap: 1.5rem; }
.topbar .brand a { font-weight: 600; text-decoration: none; color: var(--fg); }
.topbar nav { display: flex; gap: 1rem; align-items: center; flex: 1; }
.topbar nav a { color: var(--fg); text-decoration: none; opacity: 0.85; }
.topbar nav a:hover { opacity: 1; }
.topbar nav .spacer { flex: 1; }
.topbar nav .user { color: var(--muted); }

.page { padding: 1.5rem; max-width: 1200px; margin: 0 auto; }

h1 { font-size: 1.5rem; margin-top: 0; }

table { width: 100%; border-collapse: collapse; }
table th, table td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
table th { font-size: 0.75rem; text-transform: uppercase; color: var(--muted); }

.dot { display: inline-block; width: 0.6rem; height: 0.6rem; border-radius: 100%; }
.dot-online { background: var(--ok); }
.dot-offline { background: var(--muted); }

.badge { display: inline-block; padding: 0.1rem 0.5rem; border-radius: 0.25rem; font-size: 0.75rem; background: var(--border); color: var(--fg); }
.badge-ok { background: rgba(22,163,74,0.15); color: var(--ok); }
.badge-drift { background: rgba(217,119,6,0.15); color: var(--warn); }
.badge-bad { background: rgba(220,38,38,0.15); color: var(--bad); }

.btn { background: var(--accent); color: white; padding: 0.4rem 0.9rem; border-radius: 0.3rem; text-decoration: none; border: none; cursor: pointer; font: inherit; }
.btn:disabled { background: var(--muted); cursor: not-allowed; }
.btn-secondary { background: var(--card); color: var(--fg); border: 1px solid var(--border); }
.btn-row { display: flex; gap: 0.5rem; margin: 0.5rem 0 1rem 0; }

input, select, textarea { background: var(--card); color: var(--fg); border: 1px solid var(--border); padding: 0.4rem 0.6rem; border-radius: 0.3rem; font: inherit; }
textarea { width: 100%; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 0.5rem; padding: 1rem; margin-bottom: 1rem; }
.muted { color: var(--muted); }

pre { background: var(--card); padding: 0.75rem; border-radius: 0.3rem; overflow-x: auto; border: 1px solid var(--border); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.blazor-error-boundary { background: #b32121; padding: 1rem; color: white; }
.validation-message { color: var(--bad); }