:root{--bg:#f4f7fb;--card:#fff;--text:#172033;--muted:#667085;--primary:#1976d2;--border:#e5e7eb;--danger:#c62828;--success:#2e7d32}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}aside{background:#102a43;color:#fff;padding:24px 16px}.brand{font-size:22px;font-weight:800;margin-bottom:24px}nav a{display:block;color:#d9e8f5;text-decoration:none;padding:11px 12px;border-radius:8px;margin:4px 0}nav a:hover{background:#1d4b70;color:#fff}main{padding:24px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.top h1{margin:0}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;box-shadow:0 3px 12px rgba(16,42,67,.05)}.metric{font-size:30px;font-weight:800}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left}th{background:#f8fafc}.btn{display:inline-block;border:0;border-radius:8px;padding:10px 14px;background:var(--primary);color:#fff;text-decoration:none;cursor:pointer}.btn.secondary{background:#475467}.btn.danger{background:var(--danger)}form.card{max-width:900px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:block;font-weight:700;margin-bottom:5px}input,select,textarea{width:100%;padding:10px;border:1px solid #cfd6df;border-radius:8px;background:#fff}textarea{min-height:100px}.full{grid-column:1/-1}.alert{padding:12px;border-radius:8px;margin-bottom:15px}.alert.success{background:#e8f5e9;color:#1b5e20}.alert.error{background:#ffebee;color:#b71c1c}.badge{padding:4px 8px;border-radius:999px;background:#e3f2fd;color:#0d47a1;font-size:12px}.actions{display:flex;gap:8px;flex-wrap:wrap}.login{max-width:420px;margin:10vh auto}.login .card{padding:28px}@media(max-width:900px){.layout{grid-template-columns:1fr}aside{position:relative}.grid{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}}@media(max-width:560px){.grid{grid-template-columns:1fr}main{padding:14px}}