/* Fondo general */
body {
    background: linear-gradient(135deg, #f5f7fa, #e4e7eb);
}

/* Card */
.auth-card {
    backdrop-filter: blur(10px);
    border-radius: 20px;
    animation: fadeIn 0.6s ease-in-out;
}

/* Inputs */
.form-control {
    border-radius: 12px;
    transition: all 0.3s ease;
}

.form-control:focus {
    box-shadow: 0 0 0 0.15rem rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

/* Botón */
.btn-auth {
    border-radius: 12px;
    transition: all 0.3s ease;
}

.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

/* Animación */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}