*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #0f172a;
    --surface: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #3b82f6;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #22c55e;
}

body { font-family: system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }

/* Navbar */
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1.5rem; background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; font-size: 1.1rem; color: var(--accent); text-decoration: none; }
.nav-links a { color: var(--muted); text-decoration: none; margin-left: 1.25rem; font-size: 0.9rem; }
.nav-links a:hover { color: var(--text); }

/* Layout */
.container { max-width: 960px; margin: 1.5rem auto; padding: 0 1rem; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; margin-bottom: 1rem; }
.card h2 { font-size: 1rem; margin-bottom: 0.75rem; color: var(--accent); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }

/* Forms */
label { display: block; margin-top: 0.75rem; font-size: 0.85rem; color: var(--muted); }
input[type="text"], input[type="password"], select {
    width: 100%; padding: 0.5rem; margin-top: 0.25rem;
    background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 4px;
    font-size: 0.95rem;
}
button {
    margin-top: 1rem; padding: 0.5rem 1.25rem;
    background: var(--accent); color: #fff; border: none; border-radius: 4px;
    cursor: pointer; font-size: 0.9rem;
}
button:hover { opacity: 0.9; }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: 4px; margin-bottom: 1rem; font-size: 0.9rem; }
.alert-error { background: #451a1a; border: 1px solid var(--danger); color: var(--danger); }
.alert-info { background: #1e3a5f; border: 1px solid var(--accent); color: var(--accent); }
.alert-warning { background: #422006; border: 1px solid var(--warning); color: var(--warning); }
.alert-warning code { background: var(--bg); padding: 0.2rem 0.4rem; border-radius: 3px; word-break: break-all; }

/* Severity rows */
.severity-critical td { color: var(--danger); }
.severity-warning td { color: var(--warning); }
.severity-info td { color: var(--muted); }

.muted { color: var(--muted); }

/* Login page */
.login-wrapper {
    max-width: 360px; margin: 6rem auto; padding: 2rem;
    background: var(--surface); border: 1px solid var(--border); border-radius: 8px; text-align: center;
}
.login-wrapper h1 { margin-bottom: 1.5rem; color: var(--accent); }

/* Status indicators */
.status-online { color: var(--success); font-weight: 600; }
.status-online::before { content: "\25CF "; }
.status-offline { color: var(--danger); font-weight: 600; }
.status-offline::before { content: "\25CF "; }

/* Controls bar */
.controls { margin-bottom: 1rem; }
.controls select { width: auto; display: inline-block; }