body{margin:0;font-family:Arial,sans-serif;background:#f3f6fb;color:#1f2937}
.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#fff;padding:24px}
.brand{font-size:20px;font-weight:bold;margin-bottom:24px}.sidebar nav a{display:block;color:#cbd5e1;text-decoration:none;margin:10px 0}
.main{display:flex;flex-direction:column}.topbar{display:flex;justify-content:space-between;align-items:center;background:#fff;border-bottom:1px solid #e5e7eb;padding:16px 24px}
.subtle{font-size:12px;color:#6b7280;margin-top:4px}.content{padding:24px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card,.auth-card{background:#fff;border-radius:14px;padding:20px;box-shadow:0 8px 24px rgba(15,23,42,.06)}.auth-body{display:grid;place-items:center;min-height:100vh}
.auth-card{width:100%;max-width:420px}input,button,select{width:100%;padding:12px;margin-top:8px;margin-bottom:16px;border-radius:10px;border:1px solid #d1d5db;box-sizing:border-box}
button,.btn{background:#2563eb;color:#fff;border:none;cursor:pointer;text-decoration:none;display:inline-block;padding:10px 14px;border-radius:10px;width:auto}
.alert{background:#fee2e2;color:#991b1b;padding:10px;border-radius:8px;margin-bottom:12px}.alert.success{background:#dcfce7;color:#166534}
.table{width:100%;border-collapse:collapse}.table th,.table td{padding:10px;border-bottom:1px solid #e5e7eb;text-align:left}.mt{margin-top:20px}.actions{display:flex;gap:10px;flex-wrap:wrap}