:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#667085;--border:#e5e7eb;--accent:#111827;--danger:#b42318;--success:#067647}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text);font-weight:700}.brand img{height:44px;max-width:140px;object-fit:contain}.logo-placeholder{width:44px;height:44px;border-radius:10px;background:#111827;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}.hamburger{border:0;background:#111827;color:#fff;border-radius:10px;width:46px;height:42px;font-size:22px;cursor:pointer}.side-menu{position:fixed;right:-290px;top:72px;width:280px;height:calc(100vh - 72px);background:#fff;border-left:1px solid var(--border);padding:16px;transition:.2s;z-index:9;box-shadow:-12px 0 30px rgba(15,23,42,.08)}.menu-open .side-menu{right:0}.side-menu a{display:block;padding:14px 12px;border-radius:10px;color:#172033;text-decoration:none;font-weight:600}.side-menu a:hover{background:#f3f4f6}.container{padding:24px;max-width:1200px;margin:0 auto}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 8px 20px rgba(15,23,42,.04)}.card h3{margin:0 0 8px}.metric{font-size:34px;font-weight:800}.muted{color:var(--muted)}.btn{display:inline-block;border:0;background:#111827;color:#fff;padding:11px 16px;border-radius:10px;text-decoration:none;font-weight:700;cursor:pointer}.btn.secondary{background:#fff;color:#111827;border:1px solid var(--border)}.btn.danger{background:var(--danger)}.form{max-width:520px}.form label{display:block;font-weight:700;margin:12px 0 6px}.form input,.form select{width:100%;padding:11px;border:1px solid var(--border);border-radius:10px;background:#fff}.alert{padding:12px 14px;border-radius:10px;margin-bottom:14px}.alert.success{background:#ecfdf3;color:var(--success);border:1px solid #abefc6}.alert.error{background:#fef3f2;color:var(--danger);border:1px solid #fecdca}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--border);border-radius:16px}.table{width:100%;border-collapse:collapse;min-width:760px}.table th,.table td{padding:12px;border-bottom:1px solid var(--border);text-align:left}.table th{background:#f9fafb;font-size:13px;text-transform:uppercase;color:#475467}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-box{width:100%;max-width:420px;background:#fff;border:1px solid var(--border);border-radius:18px;padding:28px;box-shadow:0 16px 40px rgba(15,23,42,.08)}@media(max-width:800px){.grid{grid-template-columns:1fr}.container{padding:16px}.brand span{font-size:14px}.topbar{padding:0 14px}}
.btn.danger {
    background: var(--danger);
    color: #fff;
}

.btn.danger:hover {
    background: #991b1b;
}