.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background-color: var(--color-bg-translucent);
    backdrop-filter: blur(10px);
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--nav-padding-y) var(--space-8);
    border-bottom: 1px solid var(--color-border);
    box-sizing: border-box;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    margin-right: var(--space-6);
    font-size: 25px;
    color: var(--color-text);
    font-weight: 300;
    text-decoration: none;
}

.nav-logo img,
.nav-logo svg {
    vertical-align: middle;
}

.desktop-menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-6);
}

.desktop-menu-part {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    list-style: none;
}

.navbar .divider {
    width: 1px;
    height: 20px;
    background: #929292a1;
    display: block;
}

.nav-link {
    gap: 10px;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    font-weight: 500;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: none;
    background: transparent;
    position: relative;
    font-size: 0.9rem;
    cursor: pointer;
    transform: translateY(0);
    white-space: nowrap;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-hover);
    border-radius: var(--radius-md);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::before {
    opacity: 1;
}

.nav-link svg {
    width: 20px;
    height: 20px;
}

.nav-item.active .nav-link {
    background-color: rgb(102 142 226 / 12%);
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    align-items: center;
}

.nav-toggle-checkbox {
    display: none;
}

.nav-toggle-label {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: var(--space-3);
    font-size: var(--fs-xl);
    color: var(--color-text);
    transition: all var(--transition-base);
}

.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-8);
    z-index: 100;
    list-style: none;
    margin: 0;
}

.mobile-nav .nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    flex-direction: column;
    gap: 0px;
}

.mobile-nav .nav-item {
    margin: var(--space-1) 0;
    width: 100%;
    list-style: none;
}

.mobile-nav .nav-link {
    width: 100%;
    display: flex;
    padding: var(--space-2) var(--space-4);
    gap: 10px;
    justify-content: flex-start;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.dark-theme .navbar {
    fill: white;
    stroke: white;
}

.dark-theme .nav-link svg {
    fill: var(--color-text);
    stroke: var(--color-text);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}

.sub-navbar {
    display: flex;
    align-items: center;
    padding: var(--space-2) var(--space-8);
    border-bottom: 1px solid var(--color-border);
    box-sizing: border-box;
}

.has-submenu {
    display: block;
}

nav.sub-navbar .navbar-container {
    justify-content: start;
}
.fro-toggle-checkbox {
  display: none;
}

.has-submenu > .nav-link {
  justify-content: space-between;
  position: relative;
  width: -webkit-fill-available;
}

.has-submenu .submenu {
  display: none;
  flex-direction: column;
  padding-left: var(--space-4);
}

.fro-toggle-checkbox:checked + .nav-link + .submenu {
  display: flex;
}

.has-submenu > .nav-link::after {
  content: '▸';
  transition: transform 0.3s;
  padding: 0px 10px;
}

.fro-toggle-checkbox:checked + .nav-link::after {
  transform: rotate(90deg);
}


@media (max-width: 1024px) {
    .site-header {
        background-color: var(--color-bg);
    }

    .sub-navbar {
        display: none;
    }

    .desktop-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle-checkbox:checked ~ .mobile-nav,
    .nav-toggle .nav-toggle-checkbox:checked ~ .mobile-nav {
        display: block;
    }

    .navbar:has(.nav-toggle-checkbox:checked) .mobile-nav {
        display: block;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-padding-y: 0.3rem;
    }

    .navbar {
        padding: var(--space-1) var(--space-2);
    }
}