.back-to-top {
    position: fixed !important;
    right: max(18px, env(safe-area-inset-right, 0px)) !important;
    bottom: max(20px, env(safe-area-inset-bottom, 0px)) !important;
    width: 48px !important;
    height: 48px !important;
    min-width: 48px !important;
    min-height: 48px !important;
    padding: 0 !important;
    border: 1px solid rgba(255, 193, 7, .78) !important;
    border-radius: 50% !important;
    background: linear-gradient(135deg, #970223, #d19a00) !important;
    color: #ffffff !important;
    box-shadow: 0 10px 24px rgba(0,0,0,.28) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: translateY(10px) scale(.96) !important;
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease, box-shadow .2s ease !important;
    z-index: 1400 !important;
    text-indent: 0 !important;
    line-height: 1 !important;
}

.back-to-top::before {
    content: "" !important;
    width: 14px !important;
    height: 14px !important;
    border-left: 5px solid currentColor !important;
    border-top: 5px solid currentColor !important;
    border-radius: 2px 0 0 0 !important;
    transform: rotate(45deg) translate(3px, 3px) !important;
    transform-origin: center !important;
    display: block !important;
}

.back-to-top.show {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateY(0) scale(1) !important;
}

.back-to-top:hover {
    box-shadow: 0 12px 28px rgba(0,0,0,.34), 0 0 0 3px rgba(255,193,7,.22) !important;
}

body.dark-mode .back-to-top {
    background: linear-gradient(135deg, #5c0000, #970223) !important;
    border-color: rgba(255, 193, 7, .9) !important;
}

@media screen and (max-width: 768px) {
    .back-to-top {
        width: 44px !important;
        height: 44px !important;
        min-width: 44px !important;
        min-height: 44px !important;
        right: max(14px, env(safe-area-inset-right, 0px)) !important;
        bottom: max(16px, env(safe-area-inset-bottom, 0px)) !important;
    }

    .back-to-top::before {
        width: 13px !important;
        height: 13px !important;
        border-left-width: 5px !important;
        border-top-width: 5px !important;
    }
}