body{font-family:Arial,sans-serif;margin:0;background:#f6f7f9;color:#1f2937}header{background:#111827;color:white;padding:14px 24px;display:flex;justify-content:space-between;align-items:center}nav a{color:white;margin-left:14px;text-decoration:none}main{max-width:1100px;margin:24px auto;background:white;padding:24px;border-radius:12px;box-shadow:0 2px 12px #0001}footer{text-align:center;color:#6b7280;padding:20px}.card{border:1px solid #e5e7eb;border-radius:10px;padding:16px;margin:12px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}input,select,textarea{width:100%;padding:10px;margin:5px 0 12px;border:1px solid #d1d5db;border-radius:8px;box-sizing:border-box}button,.btn{background:#2563eb;color:white;border:none;border-radius:8px;padding:10px 14px;text-decoration:none;display:inline-block;cursor:pointer}.danger{background:#dc2626}.muted{color:#6b7280}table{width:100%;border-collapse:collapse;margin-top:15px}th,td{border-bottom:1px solid #e5e7eb;text-align:left;padding:10px}th{background:#f9fafb}.error{background:#fee2e2;padding:12px;border-radius:8px}.success{background:#dcfce7;padding:12px;border-radius:8px}code{background:#f3f4f6;padding:2px 5px;border-radius:4px}
