:root{--bg:#f6f8fb;--card:#fff;--line:#e5e7eb;--text:#0f172a;--muted:#64748b;--accent:#2563eb;--dark:#111827}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,Arial,sans-serif;background:var(--bg);color:var(--text);display:grid;grid-template-columns:250px 1fr;min-height:100vh}aside{background:#0f172a;color:#fff;padding:22px;position:sticky;top:0;height:100vh}.brand{font-weight:800;font-size:24px;margin-bottom:28px}.brand span{color:#60a5fa}nav a{display:block;color:#cbd5e1;text-decoration:none;padding:12px 14px;border-radius:12px;margin:6px 0}nav a:hover{background:#1e293b;color:#fff}main{padding:24px}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}h1{margin:0;font-size:28px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 10px 30px rgba(15,23,42,.04);margin-bottom:16px}.metric{font-size:32px;font-weight:800}.muted{color:var(--muted)}input,select,button,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:12px;background:#fff}label{font-weight:650;margin:10px 0 5px;display:block}.btn,button{background:var(--accent);border:0;color:#fff;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block;text-align:center}.btn.danger{background:#dc2626}.btn.gray{background:#475569}table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}th{background:#f8fafc}.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.alert{padding:12px;border-radius:12px;margin-bottom:14px;background:#dbeafe}.bad{background:#fee2e2}.pill{padding:5px 9px;border-radius:999px;background:#e0f2fe;font-size:12px}.login{max-width:420px;margin:10vh auto}@media(max-width:800px){body{grid-template-columns:1fr}aside{height:auto;position:relative}nav{display:flex;gap:6px;flex-wrap:wrap}main{padding:14px}.row{grid-template-columns:1fr}}

.btn, button, input[type="submit"] {
    border: 1px solid rgba(15,23,42,.18) !important;
    border-radius: 12px !important;
    padding: 11px 14px !important;
    box-shadow: 0 2px 8px rgba(15,23,42,.08);
}

.btn.gray {
    border-color: rgba(71,85,105,.35) !important;
}

.btn.danger {
    border-color: rgba(220,38,38,.35) !important;
}

.card .btn,
.card button {
    margin-top: 6px;
}