/* زر العودة لأعلى */
#scrollToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3f51b5 0%, #5c6bc0 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(63,81,181,0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

[dir="rtl"] #scrollToTop {
    right: auto;
    left: 30px;
}

#scrollToTop.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#scrollToTop:hover {
    background: linear-gradient(135deg, #303f9f 0%, #3f51b5 100%);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(63,81,181,0.5);
}

#scrollToTop:active {
    transform: translateY(-2px);
}

#scrollToTop svg {
    width: 24px;
    height: 24px;
    transition: transform 0.3s;
}

#scrollToTop:hover svg {
    transform: translateY(-3px);
}

@media (max-width: 576px) {
    #scrollToTop {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    [dir="rtl"] #scrollToTop {
        right: auto;
        left: 20px;
    }
    
    #scrollToTop svg {
        width: 20px;
        height: 20px;
    }
}