/* A local SVG rocket; only the back-to-top control is affected. */
body .back-top.back-top-rocket {
    appearance: none;
    -webkit-appearance: none;
    position: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    left: 20px;
    right: auto;
    bottom: 26px;
    width: 60px;
    height: 76px;
    padding: 0;
    margin: 0;
    border: 0;
    border-radius: 30px;
    background: transparent;
    box-shadow: none;
    cursor: pointer;
    line-height: 1;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    z-index: 80;
}

html[dir="rtl"] body .back-top.back-top-rocket {
    left: auto;
    right: 20px;
}

body .back-top.back-top-rocket.rocket-visible {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

body .back-top-rocket .back-top-rocket-art {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
    pointer-events: none;
    filter: drop-shadow(0 3px 3px rgba(40, 81, 141, .18));
    transition: transform .2s ease;
}

body .back-top-rocket .rocket-flame {
    transform-origin: 32px 56px;
    transition: transform .2s ease;
}

body .back-top.back-top-rocket:focus-visible {
    outline: 2px solid #3b6ff5;
    outline-offset: 4px;
}

@media (hover: hover) and (pointer: fine) {
    body .back-top-rocket:hover .back-top-rocket-art { transform: translateY(-5px); }
    body .back-top-rocket:hover .rocket-flame { transform: scaleY(1.1); }
}

body .back-top-rocket.rocket-launching .back-top-rocket-art {
    animation: back-top-rocket-launch .6s ease-in both;
}

@keyframes back-top-rocket-launch {
    0% { transform: translateY(0); opacity: 1; }
    18% { transform: translateY(3px); opacity: 1; }
    100% { transform: translateY(-56px); opacity: 0; }
}

@media (max-width: 767.98px) {
    body .back-top.back-top-rocket {
        left: 12px;
        right: auto;
        bottom: 16px;
        bottom: calc(16px + env(safe-area-inset-bottom, 0px));
        width: 48px;
        height: 62px;
    }
    html[dir="rtl"] body .back-top.back-top-rocket { left: auto; right: 12px; }
    body .back-top.back-top-rocket.rocket-above-nav {
        bottom: 76px;
        bottom: calc(76px + env(safe-area-inset-bottom, 0px));
    }
}

@media (prefers-reduced-motion: reduce) {
    body .back-top.back-top-rocket,
    body .back-top-rocket .back-top-rocket-art,
    body .back-top-rocket .rocket-flame {
        animation: none !important;
        transition: none !important;
        transform: none !important;
    }
}