:root {
    --bg: #f4f7fb;
    --panel: #fff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --primary: #2563eb;
    --danger: #dc2626;
    --ok: #16a34a;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Tahoma, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 230px; background: #0f172a; color: #e2e8f0; padding: 20px 14px; flex-shrink: 0; }
.sidebar .brand { font-weight: 800; font-size: 16px; margin-bottom: 20px; }
.sidebar nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar nav a { color: #cbd5e1; padding: 10px 12px; border-radius: 8px; font-size: 14px; font-weight: 600; }
.sidebar nav a:hover, .sidebar nav a.active { background: rgba(37,99,235,.2); color: #fff; }
.main { flex: 1; padding: 20px 24px 32px; min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.topbar h1 { margin: 0; font-size: 22px; }
.topbar-user { display: flex; align-items: center; gap: 10px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; margin-bottom: 16px; box-shadow: 0 1px 2px rgba(15,23,42,.04); }
.panel h2 { margin: 0 0 14px; font-size: 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; text-align: center; }
.stat-val { font-size: 28px; font-weight: 800; }
.stat-lbl { font-size: 12px; color: var(--muted); margin-top: 4px; font-weight: 600; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: right; vertical-align: middle; }
th { font-size: 12px; color: var(--muted); background: #f8fafc; }
.mono { font-family: Consolas, monospace; }
.ltr { direction: ltr; text-align: left; }
.small { font-size: 11px; }
.muted { color: var(--muted); }
.badge { display: inline-block; padding: 3px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.badge.ok { background: rgba(22,163,74,.12); color: var(--ok); }
.badge.bad { background: rgba(220,38,38,.1); color: var(--danger); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 14px; border-radius: 9px; border: none; background: var(--primary); color: #fff; font-weight: 700; font-size: 13px; cursor: pointer; }
.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--border); }
.btn-muted { background: #f1f5f9; color: var(--text); border: 1px solid var(--border); }
.toolbar { margin-bottom: 14px; }
.alert { padding: 11px 14px; border-radius: 10px; margin-bottom: 12px; font-size: 13px; font-weight: 600; }
.alert-success, .alert-success { background: rgba(22,163,74,.1); color: var(--ok); border: 1px solid rgba(22,163,74,.25); }
.alert-error { background: rgba(220,38,38,.08); color: var(--danger); border: 1px solid rgba(220,38,38,.2); }
.alert-info { background: rgba(37,99,235,.08); color: var(--primary); border: 1px solid rgba(37,99,235,.2); }
.hint, .api-links { font-size: 12.5px; color: var(--muted); line-height: 1.6; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
label { display: block; font-size: 12px; font-weight: 700; color: var(--muted); margin-bottom: 5px; }
input, select, textarea { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 9px; font: inherit; }
textarea { resize: vertical; }
dialog { border: 1px solid var(--border); border-radius: 14px; padding: 20px; max-width: 480px; width: 92%; }
dialog::backdrop { background: rgba(15,23,42,.45); }
.dialog-actions { display: flex; gap: 8px; margin-top: 14px; justify-content: flex-end; }
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card { width: 100%; max-width: 380px; background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 28px; box-shadow: 0 10px 30px rgba(15,23,42,.08); }
.auth-card h1 { margin: 0 0 6px; font-size: 22px; }
.auth-card form { margin-top: 16px; }
.auth-card .btn { width: 100%; margin-top: 10px; }
.actions { white-space: nowrap; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
@media (max-width: 800px) {
    .layout { flex-direction: column; }
    .sidebar { width: 100%; }
    .form-grid { grid-template-columns: 1fr; }
}