.auth-shell {
    min-height: calc(100vh - 160px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 0;
}

.auth-card {
    background: #ffffff;
    border-radius: 1.25rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    box-shadow: 0 20px 65px rgba(15, 23, 42, 0.15);
    width: min(520px, 100%);
}

.auth-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.auth-form {
    display: grid;
    gap: 1rem;
}

.auth-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.auth-actions .btn {
    width: 200px;
}

.auth-form .form-floating .form-control {
    border-radius: 1rem;
    padding: 1.1rem 1rem;
}

.auth-form .form-floating label {
    color: #94a3b8;
}

.prototype-hint {
    font-size: 0.9rem;
    color: #475569;
    border-radius: 1rem;
    border: 1px dashed rgba(71, 85, 105, 0.4);
    padding: 1rem;
    background: #f8fafc;
}