body {
    background: linear-gradient(to right, #6a11cb 0%, #2575fc 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    border-radius: 15px;
    border: none;
}

.card-title {
    font-weight: bold;
}

.input-group-text {
    background-color: #e9ecef;
    border-right: none;
}

.form-control {
    border-left: none;
}

/* Animação de shake para erro */
.shake {
    animation: shake 0.5s;
    animation-iteration-count: 1;
}

.loading {
    position: fixed;
    left: 40%;
    top: 26%;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

@keyframes shake {
    0% {
        transform: translate(1px, 1px) rotate(0deg);
    }

    10% {
        transform: translate(-1px, -2px) rotate(-1deg);
    }

    20% {
        transform: translate(-3px, 0px) rotate(1deg);
    }

    30% {
        transform: translate(3px, 2px) rotate(0deg);
    }

    40% {
        transform: translate(1px, -1px) rotate(1deg);
    }

    50% {
        transform: translate(-1px, 2px) rotate(-1deg);
    }

    60% {
        transform: translate(-3px, 1px) rotate(0deg);
    }

    70% {
        transform: translate(3px, 1px) rotate(-1deg);
    }

    80% {
        transform: translate(-1px, -1px) rotate(1deg);
    }

    90% {
        transform: translate(1px, 2px) rotate(0deg);
    }

    100% {
        transform: translate(1px, -2px) rotate(-1deg);
    }
}