.custom-scrollbar {
    --scrollbar-width: 0.95rem;
    position: fixed;
    top: max(5.45rem, env(safe-area-inset-top));
    right: max(0.6rem, env(safe-area-inset-right));
    bottom: max(1.2rem, env(safe-area-inset-bottom));
    width: var(--scrollbar-width);
    z-index: 80;
    pointer-events: none;
    opacity: 0;
    transform: translate3d(1rem, 0, 0);
    transition:
        opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.custom-scrollbar.is-ready {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.custom-scrollbar.is-hidden {
    opacity: 0;
    transform: translate3d(1rem, 0, 0);
}

/* Hide custom scrollbar on mobile — native scroll is better */
@media (max-width: 767px) and (pointer: coarse) {
    .custom-scrollbar {
        display: none !important;
    }
}

.custom-scrollbar__track {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 999px;
    background: #E50914; /* Fondo rojo profesional */
    box-shadow: 
        inset 0 0 10px rgba(0, 0, 0, 0.3),
        0 4px 15px rgba(229, 9, 20, 0.2);
}

.custom-scrollbar__labels {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
    padding: 1rem 0;
    will-change: transform;
}

.custom-scrollbar__label {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: 'Poppins', sans-serif;
    font-size: 0.38rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    white-space: nowrap;
    user-select: none;
}

.custom-scrollbar__label.is-ink {
    color: #0A0A0A;
}

.custom-scrollbar__label.is-ivory {
    color: #FFFFFF;
}

.custom-scrollbar__thumb {
    position: absolute;
    top: 0;
    left: 2px;
    width: calc(100% - 4px);
    min-height: 4rem;
    border-radius: 999px;
    background: rgba(15, 15, 15, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(4px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    will-change: transform, height;
    transition:
        height 0.28s cubic-bezier(0.16, 1, 0.3, 1),
        background 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.custom-scrollbar__thumb::before {
    content: '';
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.custom-scrollbar.is-scrolling .custom-scrollbar__thumb {
    background: #000;
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 12px rgba(0,0,0,0.8);
}

.custom-scrollbar.is-scrolling .custom-scrollbar__thumb::before {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.2);
}

@media (max-width: 767px) {
    .custom-scrollbar {
        --scrollbar-width: 0.75rem;
        top: max(5rem, env(safe-area-inset-top));
        right: max(0.4rem, env(safe-area-inset-right));
        bottom: max(1rem, env(safe-area-inset-bottom));
    }

    .custom-scrollbar__labels {
        padding: 0.5rem 0;
    }

    .custom-scrollbar__label {
        font-size: 0.3rem;
        letter-spacing: 0.15em;
    }

    .custom-scrollbar__thumb {
        min-height: 2.5rem;
    }
}