:root {
    --blanco        : #ffffff;
    --azul1         : #4CC0E0;
    --verdeClaro    : #5FBC2E;
}

.btn {
    width: 18rem;
    position: relative;
    padding: 10px;
    text-decoration: none;
    text-transform: uppercase;
    color: var(--blanco);
    font-size: 1.3rem;
    border-radius: 0.8rem;
    transition: all 0.6s ease;
    z-index: 2;
    cursor: pointer;
    font-family: 'Roboto Bold';
    height: 65px;
}

.btn-efect {
    border: none;
    overflow: hidden;
}

.btn-efect:hover {
    color: var(--blanco);
}

.btn-efect::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-color: var(--azul1);
    z-index: -2;
}

.btn-efect::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 250px;
    left: 0;
    bottom: -150%;
    border-radius: 30%;
    background-color: var(--verdeClaro);
    z-index: -1;
}

.btn-efect:hover::before {
    animation: btn-efect 0.8s linear both;
}

@keyframes btn-efect {
    0% {
        transform: rotate(0deg);
    }

    100% {
        bottom: 100px;
        transform: rotate(360deg);
    }
}

@media (max-width: 380px) {
    .btn {
        width: 100%;
        font-size: 1rem;
        height: 65px;
    }
}

.change-btn {
    width: 28rem;
}

@media (max-width: 550px) {
    .btn {
        font-size: 1rem;
    }

    .change-btn {
        width: 18rem;
    }
}