* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: Arial, sans-serif;
            background: #f5f5f5;;
			
			/*background: #f5f5f5;*/
        }
        /* =========================
           NAVBAR
        ========================= */
        .navbar-ham {
            width: 100%;
            /*background: #111827;*/
			background: #0d6efd; /* Indigo*/
            color: white;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 2px 5%;
            position: relative;
            z-index: 1000;
        }
        /* Logo */
        .logo {
            font-size: 24px;
            font-weight: bold;
            color: white;
            text-decoration: none;
        }
        /* =========================
           DESKTOP MENU
        ========================= */
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 10px;
            list-style: none;
        }
        .nav-menu li {
            position: relative;
			/*text-transform: uppercase;*/
        }
        .nav-menu a {
            display: block;
            color: white;
            text-decoration: none;
            padding: 10px 15px;
            border-radius: 6px;
            transition: 0.3s;
        }
        .nav-menu a:hover {
            background: #2563eb;
        }
        /* =========================
           DROPDOWN
        ========================= */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            width: 180px;
            background: #1f2937;
            list-style: none;
            border-radius: 6px;
            overflow: hidden;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: 0.3s;
        }
        .dropdown:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .dropdown-menu a {
            border-radius: 0;
            padding: 12px 15px;
        }
        /* =========================
           HAMBURGER BUTTON
        ========================= */
        .hamburger {
            width: 42px;
            height: 42px;
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            position: relative;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: white;
            margin: 5px auto;
            border-radius: 5px;
            transition: 0.3s;
        }
        /* =========================
           MOBILE
        ========================= */
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #111827;
                display: block;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
            }
            /* Menu Open */
            .nav-menu.active {
                max-height: 500px;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-menu a {
                width: 100%;
                padding: 15px 20px;
                border-radius: 0;
                border-top: 1px solid #374151;
            }
            /* Mobile Dropdown */
            .dropdown-menu {
                position: static;
                width: 100%;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
                border-radius: 0;
                background: #1f2937;
            }
            .dropdown.active .dropdown-menu {
                display: block;
            }
            .dropdown-menu a {
                padding-left: 40px;
            }
            /* =========================
               HAMBURGER → X
            ========================= */
            .hamburger.active span:nth-child(1) {
                transform: translateY(8px) rotate(45deg);
            }
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            .hamburger.active span:nth-child(3) {
                transform: translateY(-8px) rotate(-45deg);
            }
        }
        /* =========================
           PAGE CONTENT
        ========================= */
        .content {
            padding: 50px 5%;
            text-align: center;
        }
        .content h1 {
            margin-bottom: 15px;
        }
		
		.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
}
/* =================================
   FIXED / STICKY NAVBAR
================================= */

.navbar-ham {
    position: sticky;
    top: 0;
    z-index: 9999;
    width: 100%;
}

/* =========================================
   STICKY NAVBAR WITH SCROLL SHADOW
   ========================================= */

.navbar-ham {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 9999;

    /* Smooth effect */
    transition: box-shadow 0.3s ease,
                background-color 0.3s ease;

    /* Navbar-এর নিচে হালকা Shadow */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}


/* =========================================
   NAVBAR SCROLL করলে আরও সুন্দর Shadow
   ========================================= */

.navbar-ham.scrolled {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.30);
}