/**
 * Style komponentu: Przycisk powrotu na górę
 * Lokalizacja: theme/components/BackToTop/back-to-top.css
 */

.back-to-top {
    position: fixed;
    /* Pozycja dopasowana tak, by przycisk wisiał idealnie nad Socialami */
    bottom: 1.5rem; 
    right: 1.5rem;
    z-index: 89;
    width: 3rem;
    height: 3rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease, opacity 0.4s ease, transform 0.4s ease;
    cursor: pointer;
    outline: none;
    box-sizing: border-box;
    border: 1px solid var(--black);
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--white);
    
    /* Domyślnie ukryty */
    opacity: 0;
    pointer-events: none;
    transform: translateY(1.5rem);
}

@media (min-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 2rem;
    }
}

/* Klasa aktywowana przez osobną logikę JS po przesunięciu o 300px */
.back-to-top--visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: scale(1.05);
    background-color: var(--primary);
    border-color: var(--primary);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.back-to-top svg {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    stroke: var(--white);
    stroke-width: 2;
}

/* Tooltip dla przycisku */
.back-to-top__tooltip {
    position: absolute;
    right: 100%;
    margin-right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--black);
    color: var(--white);
    font-size: 0.825rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    opacity: 0;
    white-space: nowrap;
    pointer-events: none;
    transition: opacity 0.2s ease;
    visibility: hidden;
}

.back-to-top:hover .back-to-top__tooltip {
    opacity: 1;
    visibility: visible;
}