/* =========================
   BOTÓN SCROLL-TO-TOP
========================== */

.mp-scroll-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;

    display: flex;
    align-items: center;
    justify-content: center;

    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--mp-primary);
    color: #fff;
    
    font-size: 1.5rem;
    text-decoration: none;
    
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
    
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

.mp-scroll-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mp-scroll-top:hover {
    background: var(--mp-primary-light);
    color: #fff;
}