/* Scroll to top button styles */
.scroll-to-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #000;
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 200ms ease, transform 200ms ease, visibility 200ms;
    z-index: 1060; /* above most UI elements */
}

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

.scroll-to-top:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* small icon inside */
.scroll-to-top .arrow-up {
    font-size: 18px;
    line-height: 1;
    transform: translateY(-1px);
}