:root {
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #172033;
    --muted: #687185;
    --border: #dfe5ef;
    --primary: #1f6feb;
    --danger: #c62828;
    --ok: #0f8f55;
    --warning: #b7791f;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 260px; background: #101827; color: #fff; padding: 24px 18px; position: fixed; top: 0; left: 0; bottom: 0; }
.brand { font-size: 24px; font-weight: 800; margin-bottom: 28px; }
.nav a { display: block; color: #d8e1f2; padding: 12px 14px; border-radius: 10px; margin-bottom: 6px; }
.nav a.active, .nav a:hover { background: rgba(255,255,255,.12); color: #fff; }
.version-box { position:absolute;left:18px;right:18px;bottom:18px;color:#9fb0c8;font-size:12px; }
.main { margin-left: 260px; width: calc(100% - 260px); padding: 28px; }
.header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.header h1 { margin: 0; font-size: 30px; }
.userbar { color: var(--muted); font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 20px; box-shadow: 0 4px 16px rgba(20,30,50,.04); }
.card h2, .card h3 { margin-top: 0; }
.metric-label { color: var(--muted); font-size: 14px; }
.metric-value { font-size: 28px; font-weight: 800; margin-top: 6px; }
.metric-value.small-metric { font-size: 20px; word-break: break-word; }
.table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 14px; overflow: hidden; }
.table th, .table td { border-bottom: 1px solid var(--border); padding: 12px 14px; text-align: left; vertical-align: top; }
.table th { color: var(--muted); font-size: 13px; background: #f9fbff; }
.table tr:last-child td { border-bottom: none; }
.btn { display: inline-block; border: 0; border-radius: 10px; padding: 10px 14px; background: var(--primary); color: #fff; font-weight: 700; cursor: pointer; }
.btn.secondary { background: #eef3ff; color: var(--primary); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 7px 10px; font-size: 13px; }
.form-row { margin-bottom: 16px; }
label { display: block; font-weight: 700; margin-bottom: 6px; }
input, select, textarea { width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 10px; background: #fff; font: inherit; }
textarea { min-height: 100px; }
.flash { padding: 12px 14px; border-radius: 10px; margin-bottom: 16px; }
.flash.info { background: #eaf3ff; color: #17437a; }
.flash.success { background: #eaf8f1; color: #11613d; }
.flash.error { background: #fdecec; color: #8a1c1c; }
.badge { display: inline-block; padding: 4px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; background: #edf2f7; color: #4a5568; }
.badge.ok { background: #eaf8f1; color: var(--ok); }
.badge.warn { background: #fff7e6; color: var(--warning); }
.badge.error { background: #fdecec; color: #8a1c1c; }
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card { width: 100%; max-width: 420px; }
pre.code { white-space: pre-wrap; background:#101827; color:#d8e1f2; padding:14px; border-radius:12px; overflow:auto; }
@media (max-width: 900px) {
    .layout { display: block; }
    .sidebar { position: static; width: 100%; padding: 16px; }
    .version-box { position: static; margin-top: 12px; }
    .nav { display: flex; flex-wrap: wrap; gap: 6px; }
    .nav a { margin: 0; }
    .main { margin-left: 0; width: 100%; padding: 16px; }
    .grid, .grid.two { grid-template-columns: 1fr; }
    .header { display: block; }
    .table { display: block; overflow-x: auto; }
}