/* Login */
.error { color: red; font-weight: bold; margin-bottom: 1rem; }
.logout-link { float: right; color: #ffcc00 !important; }

/* Alertas */
.alert { padding: 1rem; border-radius: 4px; margin: 1rem 0; font-weight: bold; }
.alert-info { background: #fff3cd; border: 1px solid #ffeaa7; color: #856404; }
.alert-success { background: #d4edda; border: 1px solid #c3e6cb; color: #155724; }
.alert-error { background: #f8d7da; border: 1px solid #f5c6cb; color: #721c24; }

/* Botão */
.btn { display: inline-block; margin-top: 1rem; padding: 0.8rem 1.5rem; background: #1a73e8; color: white; text-decoration: none; border-radius: 4px; font-weight: bold; }
.btn:hover { background: #1557b0; }