/* ========================================
   Scroll to Top Button - Minimal Elegant Style
   ======================================== */

.scroll-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.scroll-to-top-btn:hover {
    transform: translateY(-5px) scale(1.1);
}

.scroll-to-top-btn:active {
    transform: translateY(-3px) scale(0.95);
}

/* Chevron made of dots pointing up */
.scroll-to-top-icon {
    width: 20px;
    height: 20px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Center dot */
.scroll-to-top-icon::before {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Left dot */
.scroll-to-top-icon::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    top: 10px;
    left: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Right dot - using box-shadow */
.scroll-to-top-icon {
    box-shadow: 14px 10px 0 0 rgba(255, 255, 255, 0.7);
    border-radius: 50%;
}

/* Hover effects */
.scroll-to-top-btn:hover .scroll-to-top-icon::before,
.scroll-to-top-btn:hover .scroll-to-top-icon::after {
    background: #ffffff;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.scroll-to-top-btn:hover .scroll-to-top-icon {
    box-shadow: 14px 10px 0 0 #ffffff,
                14px 10px 10px 0 rgba(255, 255, 255, 0.3);
}

/* Subtle animation when visible */
@keyframes float-up {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-3px);
    }
}

.scroll-to-top-btn.visible .scroll-to-top-icon::before {
    animation: float-up 2s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .scroll-to-top-btn {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
    
    .scroll-to-top-icon {
        width: 18px;
        height: 18px;
    }
    
    .scroll-to-top-icon::before,
    .scroll-to-top-icon::after {
        width: 5px;
        height: 5px;
    }
    
    .scroll-to-top-icon::after {
        top: 9px;
    }
    
    .scroll-to-top-icon {
        box-shadow: 13px 9px 0 0 rgba(255, 255, 255, 0.7);
    }
    
    .scroll-to-top-btn:hover .scroll-to-top-icon {
        box-shadow: 13px 9px 0 0 #ffffff,
                    13px 9px 10px 0 rgba(255, 255, 255, 0.3);
    }
}

@media (max-width: 480px) {
    .scroll-to-top-btn {
        width: 36px;
        height: 36px;
        bottom: 15px;
        right: 15px;
    }
    
    .scroll-to-top-icon::before,
    .scroll-to-top-icon::after {
        width: 4px;
        height: 4px;
    }
    
    .scroll-to-top-icon::after {
        top: 8px;
    }
    
    .scroll-to-top-icon {
        box-shadow: 12px 8px 0 0 rgba(255, 255, 255, 0.7);
    }
}