body{
    background:
        linear-gradient(rgba(0,0,0,.55), rgba(0,0,0,.55)),
        url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?q=80&w=1920');

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;
}

/* CARD */

.auth-card{
    backdrop-filter: blur(12px);
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    color: white;
}

/* INPUTS */

.auth-card .form-control{
    background: rgba(255,255,255,0.15);
    border: none;
    color: white;
    height: 48px;
}

.auth-card .form-control:focus{
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: none;
}

.auth-card .form-control::placeholder{
    color: rgba(255,255,255,0.7);
}

/* LABELS */

.auth-card label{
    margin-bottom: 6px;
    font-weight: 500;
}

/* BOTÃO */

.btn-auth{
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    border: none;
    height: 48px;
    font-weight: 600;
    transition: all .3s ease;
}

.btn-auth:hover{
    transform: translateY(-2px);
    opacity: .95;
}

/* LINK */

.auth-link{
    color: #fff;
    text-decoration: none;
}

.auth-link:hover{
    text-decoration: underline;
}

/* ALERTAS */

.alert{
    border: none;
    border-radius: 12px;
}