.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 9999;
}

/* Tipos */
.message.info { background: #3498db; }
.message.success { background: #2ecc71; }
.message.error { background: #e74c3c; }

/* Visible */
.message.show {
    opacity: 1;
    transform: translateY(0);
}