/* ===================================
   BACK TO TOP BUTTON
   =================================== */

.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    border-radius: var(--radius-lg, 20px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 4px 20px rgba(255, 215, 0, 0.4),
        0 2px 8px rgba(0, 0, 0, 0.3);
    z-index: 999;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 6px 30px rgba(255, 215, 0, 0.6),
        0 4px 12px rgba(0, 0, 0, 0.4);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    stroke: #000000;
    stroke-width: 3;
    transition: transform 0.3s ease;
}

.back-to-top:hover svg {
    transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 90px;
        right: 20px;
        width: 46px;
        height: 46px;
    }
    
    .back-to-top svg {
        width: 22px;
        height: 22px;
    }
}