/* Nav */

.navHeader_container {
    position: fixed;
    width: 100%;
    height: 50px;
    background-color: var(--navHeader);
    gap: var(--gap);
    transition: var(--transition_duration);
}

.navHeader_line {
    width: 80%;
    height: 1px;
    background-color: var(--color_white);
    position: absolute;
    top: 50px;
    transition: .3s var(--bubleCubicCurve);
}

    .navHeader_container:hover .navHeader_line {
        width: 80%;
    }

.lineScrolled {
    width: 50%;
}

.scrolled {
    background-color: var(--navHeader_scrolled);
    backdrop-filter: blur(15px);
}

    .navHeader_container button {
        opacity: .6;
    }

        .navHeader_container button:hover, .navHeader_container button:focus-visible {
            opacity: 1;
        }

.navHeader_logo {
    aspect-ratio: 1 / 1;
    width: 50px;

    position: absolute;
    left: var(--gap);

    background-image: none;
}

/* Hamburger button */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    position: absolute;
    right: var(--gap);
    opacity: 0.7;
}

.hamburger:hover,
.hamburger:focus-visible {
    opacity: 1;
    scale: 1;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: white;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile dropdown menu */
.mobile_menu {
    position: fixed;
    top: 50px;
    left: 0;
    width: 100%;
    background-color: var(--navHeader_scrolled);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s ease;
    z-index: 998;
    border-bottom: 1px solid rgba(255, 255, 255, 0);
}

.mobile_menu.open {
    max-height: 300px;
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.mobile_menu_item {
    padding: 16px var(--padding);
    opacity: 0.6;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    text-align: left;
    width: 100%;
    box-sizing: border-box;
    font-size: 1rem;
}

.mobile_menu_item:hover,
.mobile_menu_item:focus-visible {
    opacity: 1;
    scale: 1;
    background-color: rgba(255, 255, 255, 0.05);
}

@media (max-width: 640px) {
    .nav-btn {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .navHeader_line {
        display: none;
    }
}