.header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--first-color);
    z-index: var(--z-fixed);
    transition: background .4s, box-shadow .4s;
}

.nav {
    height: var(--nav_header_height);
    display: grid;
    padding-bottom: 8rem;
    place-items: center;
    margin-top: var(--nav-margin-top);
}

.header .nav .nav__logo img {
    width: var(--navlogo-width);
}

.nav .nav__menu .nav__list {
    display: flex;
    margin-top: var(--nav-margin-top);
}

.nav__divider {
    height: 1px;
    width: 100%; 
    background-color: rgba(255, 255, 255, 0.159); 
    margin: 0 1rem; 
    transform: translateY(20px);
}

/*========== HEADER NAV A  ==========*/
.nav .nav__menu ul a {
    color: var(--white-color);
    display: block;
    font-size: var(--font-medium);
    margin: 1rem 0; 
    padding: 0.5rem 1.2rem; 
    border-radius: 3px; 
    transition: background-color 0.3s ease, color 0.3s ease; 
}

.nav .nav__menu .nav__list .nav__item:hover{
    color: #f2f2f2; 
}





.nav .nav__menu ul a img {
    width: var(--small-font-size);
}

/*========== Dropdown Menü  ==========*/
.nav .nav__menu .nav__list ul.dropdown {
    width: 200px; 
    position: absolute;
    z-index: 999;
    display: none;
    background-color: var(--second-color); 
    padding: 1rem; 
    border-radius: 10px; 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); 
    transition: opacity 0.3s ease, transform 0.3s ease; 
}


.nav .nav__menu li:hover ul.dropdown {
    display: block;
    opacity: 1; 
    transform: translateY(0); 
}


.nav .nav__menu .nav__list ul.dropdown li a {
    color: var(--first-title-text-color);
    display: block;
    padding: 0.5rem 1rem; 
    text-align: left;
    text-decoration: none;
    border-bottom: 1px solid var(--first-color); 
    transition: background-color 0.3s ease, color 0.3s ease;
}





/*========== SIDEBAR ==========*/
.sidebar {
    position: fixed;
    bottom: 0;
    right: 0;
    height: 100vh;
    width: 250px;
    z-index: 999;
    background-color: #26443bde;
    backdrop-filter: blur(10px);
    box-shadow: -10px 0 10px rgba(255, 255, 255, 0.159);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 1rem; 
    overflow: auto;
    transition: transform 0.5s ease, opacity 0.5s ease;
    transform: translateX(100%);
    opacity: 0;
}

.sidebar .sidebar_img {
    position: absolute;
    bottom: 10%; 
    right: 0; 
    width: 300px;
    height: 300px;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.1;
}

.showSidebar_hide{
    display: none;
    position: absolute; 
    top: 60%;
    right: 5%; 
    transform: translateY(-50%); 
    z-index: 200; 
}

        /*========== Mobile Devices ==========*/

@media(max-width: 439px) {
    .nav__logo img{
        width: 100px !important;  
    }

    .hideOnMobile {
        display: none;
    }

    .showSidebar_hide {
        display: block;
    }

    .nav {
        height: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 10px;
    }

    .sidebar {
        width: 100%;
    }

    .nav__divider {
        visibility: hidden; 
        opacity: 0;
        position: absolute;
        width: 0;
        height: 0;
    }

    .sidebar .sidebar_img {
        position: fixed; 
        right: 10%; 
        width: 50px; 
        height: 50px;
        top: 5%;
        z-index: 100;
    }

   
    .nav__item {
        padding-bottom: 60px; 
    }
}



        /*========== Tablet Devices ==========*/
@media (min-width: 440px) and (max-width: 768px) {

    .nav__logo img{
            width: 120px  !important;
    }

    .hideOnMobile {
        display: none;
    }

    .showSidebar_hide {
        display: block;
    }

    .nav {
        height: var(--nav_header_height);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 10px;

    }

    .sidebar {
        width: 100%;
    }

    .nav__divider {
        visibility: hidden; 
        opacity: 0;
        position: absolute;
        width: 0;
        height: 0;
    }

    .sidebar .sidebar_img {
        bottom: 30%; 
        right: 15%;
        width: 200px;
        height: 200px;
    }
}

        /*========== Laptop Devices ==========*/
@media (min-width: 769px) and (max-width: 1110px) {

    
    .hideOnMobile {
        display: none;
    }

    .showSidebar_hide {
        display: block;
    }

    .nav {
        height: var(--nav_header_height);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 10px;

    }

    .sidebar {
        width: 100%;
    }

    .nav__divider {
        visibility: hidden; 
        opacity: 0;
        position: absolute;
        width: 0;
        height: 0;
    }

    .sidebar .sidebar_img {
        bottom: 30%; 
        right: 20%;
        width: 250px;
        height: 250px;
    }
}


.navheader{
    height: 5vh;
}


/*========== TRANSITIONS ==========*/
.sidebar {
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.sidebar.open {
    transform: translateX(0);
    opacity: 1;
    display: flex;
}

.sidebar.open .nav__item {
    opacity: 1;
}