/* Container for background */
.site-bg {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background image with blur */
.site-bg::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/Content/Images/bg-placeholder.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    filter: blur(2px) brightness(0.9); 
    /* blur(8px): میزان تاری - قابل تنظیم
       brightness(0.7): کمی تیره‌تر کردن پس‌زمینه */
    
    z-index: -1; /* پشت همه عناصر */
}