:root {
    --bg: #0f172a;
    --card: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #3b82f6;
    --ok: #22c55e;
    --warn: #f59e0b;
    --crit: #ef4444;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.topbar {
    display: flex; align-items: center; gap: 24px;
    padding: 14px 24px; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 18px; }
.brand span { color: var(--muted); font-weight: 400; }
.topbar nav { display: flex; gap: 16px; flex: 1; }
.topbar nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; }
.topbar nav a.active, .topbar nav a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.logout { color: var(--muted); text-decoration: none; }
.container { max-width: 1100px; margin: 0 auto; padding: 24px; }
h1 { margin-top: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.card-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.card-head h2 { margin: 0; font-size: 16px; }
.ip { color: var(--muted); font-size: 13px; }
.metric-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.05); font-size: 14px; }
.muted { color: var(--muted); }
.muted-small { color: var(--muted); font-size: 12px; }
.ok { color: var(--ok); }
.warn { color: var(--warn); }
.crit { color: var(--crit); font-weight: 600; }
.stale-badge { background: rgba(245,158,11,0.15); color: var(--warn); padding: 6px 10px; border-radius: 6px; font-size: 12px; margin-bottom: 10px; }
.alert-banner { background: rgba(239,68,68,0.1); border: 1px solid var(--crit); border-radius: 8px; padding: 12px 16px; margin-bottom: 16px; }
.alert-banner ul { margin: 8px 0 0; padding-left: 18px; font-size: 13px; }
.alert-success { background: rgba(34,197,94,0.15); color: var(--ok); padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.alert-error { background: rgba(239,68,68,0.15); color: var(--crit); padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; }
.chart-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.filter-bar { display: flex; gap: 16px; align-items: center; margin-bottom: 20px; flex-wrap: wrap; }
.filter-bar select { background: var(--card); color: var(--text); border: 1px solid var(--border); padding: 8px 12px; border-radius: 6px; }
.range-toggle a { color: var(--muted); text-decoration: none; padding: 6px 12px; border-radius: 6px; margin-right: 4px; font-size: 13px; }
.range-toggle a.active { background: var(--accent); color: #fff; }
.data-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.data-table th, .data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.data-table th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.input-sm { width: 70px; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 4px 6px; border-radius: 4px; }
.btn-sm { background: var(--accent); color: #fff; border: none; padding: 6px 14px; border-radius: 6px; cursor: pointer; font-size: 13px; }
.btn-sm:hover { opacity: 0.9; }
.badge-warning { color: var(--warn); }
.badge-critical { color: var(--crit); font-weight: 600; }
.key-display { font-size: 12px; word-break: break-all; }
.code-block { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 14px; overflow-x: auto; font-size: 12px; white-space: pre-wrap; }
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 20px; }

.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 32px; width: 320px; }
.login-box h1 { margin: 0 0 4px; font-size: 20px; }
.login-box .sub { color: var(--muted); font-size: 13px; margin: 0 0 20px; }
.login-box label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; margin-top: 12px; }
.login-box input { width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 10px; border-radius: 6px; }
.login-box button { width: 100%; margin-top: 20px; background: var(--accent); color: #fff; border: none; padding: 10px; border-radius: 6px; cursor: pointer; font-weight: 600; }