/* ====================================
       CSS-Only Accessible Navigation
       ==================================== */
/* Base Header Styles */
.site-header {
    color: light-dark(var(--color-dark), var(--color-light));
    width: 100vw;
    position: sticky;
    z-index: 999;
    top: 2vh;
    color: var(--color-light);
    /*    background-color: var(--color-dark-translucent);*/
    animation: stickyNav linear forwards;
}


.main-nav {
    width: 100%;
}


.nav-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 90vw;
    max-width: var(--grid-max);
    margin: 0 auto;
    padding: 1rem 1rem;
    border: solid 1px rgba(255, 255, 255, 0.18);
    border-radius: 3rem;
    background: light-dark(#ffffff80, #30343722);
    /* #30343722; */
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    z-index: 1000 !important;
    gap: 1rem;
    /*gap: 2rem;*/
}

    .nav-container * {
        color: light-dark(var(--color-dark), var(--color-light));
    }

/* Logo */
.logo-container {
    flex-shrink: 0;
    z-index: 1001;
}

    .logo-container svg {
        height: 50px;
        width: auto;
        display: block;
    }

/* Hide checkbox input */
.menu-toggle {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

/* Mobile Toggle Button */
.menu-toggle-label {
    display: none;
    cursor: pointer;
    z-index: 1001;
    padding: 0.5rem;
    -webkit-tap-highlight-color: transparent;
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 25px;
    height: 18px;
    flex: 3;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-light);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
}


/* Animated hamburger to X */
.menu-toggle:checked ~ .menu-toggle-label .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle:checked ~ .menu-toggle-label .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.menu-toggle:checked ~ .menu-toggle-label .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Menu Wrapper */
.menu-wrapper {
    display: flex;
    justify-content: center;
}

/* Main Menu List */
.menu-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
    align-items: center;
}

.menu-item {
    position: relative;
}

/* Menu Links */
.menu-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 1.25rem;
    /* color: var(--color-light); */
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s, color 0.2s;
    white-space: nowrap;
}

    .menu-link:hover,
    .menu-link:focus {
        background-color: var(--hover-bg, rgba(0, 0, 0, 0.05));
        color: var(--color-motion-orange);
        outline: none;
    }

    .menu-link:focus-visible {
        outline: 2px solid var(--focus-color, #0066cc);
        outline-offset: 2px;
    }

.submenu-indicator {
    font-size: 0.75rem;
    transition: transform 0.3s;
}

/* Submenu Styles - CSS-only dropdown on hover/focus */
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--color-motion-grey);
    color: var(--color-light);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 0.5rem;
    list-style: none;
    margin: 0.5rem 0 0 0;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
    z-index: 1000;
    border: solid 1px rgba(255, 255, 255, 0.18);
    border-radius: 1rem;
}

/* Show submenu on hover */
.has-submenu:hover > .submenu,
.has-submenu:focus-within > .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Rotate indicator when submenu is visible */
.has-submenu:hover > .menu-link .submenu-indicator,
.has-submenu:focus-within > .menu-link .submenu-indicator {
    transform: rotate(-180deg);
}

.submenu-item {
    margin: 0;
}

.submenu-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--color-light);
    text-decoration: none;
    border-radius: 0.375rem;
    transition: background-color 0.2s, color 0.2s;
    font-size: var(--s-1);
}

    .submenu-link:hover,
    .submenu-link:focus {
        background-color: var(--color-dark);
        color: var(--color-motion-orange);
        outline: none;
    }

        .submenu-link:hover svg {
            fill: var(--color-motion-orange);
        }

    .submenu-link:focus-visible {
        outline: 2px solid var(--focus-color, #0066cc);
        outline-offset: -2px;
    }

/* Brand Logo Submenu Item */
.submenu-link--brand {
    padding: 0.5rem;
}

.menu-brand-logo {
    height: 20px;
    width: auto;
    max-width: 150px;
}

/* Utility Menu */
.utility-menu {
    flex-shrink: 0;
    z-index: 1001;
}

.utility-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    /*gap: 0.5rem;*/
    align-items: center;
}

.utility-item {
    margin: 0;
}

.utility-button,
.utility-link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem;
    background: transparent;
    border: none;
    color: var(--color-light, #333);
    /*background: light-dark(#30343722,#ffffff80);*/
    cursor: pointer;
    border-radius: 3rem;
    transition: background-color 0.2s, color 0.2s;
    text-decoration: none;
    font-size: 1rem;
    margin-top: 0;
}

    .utility-button:hover,
    .utility-link:hover,
    .utility-link:focus {
        background: light-dark(#ffffff90, #30343790) !important;
        color: light-dark(var(--color-dark), var(--color-light));
        outline: none;
    }

    .utility-button:focus-visible,
    .utility-link:focus-visible {
        outline: 2px solid var(--focus-color, #0066cc);
        outline-offset: 2px;
    }

.theme-icon {
    width: 24px !important;
    height: 24px !important;
    color: var(--color-light);
}

/* Mobile menu overlay backdrop */
.menu-overlay {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease-in-out, visibility 0s linear 0.4s;
    z-index: 998;
    pointer-events: none;
    width: 100vw;
    height: 100vh;
    position: fixed;
    background: radial-gradient(circle at 110% 80%, rgba(0, 128, 145, 0.2), transparent 50%), radial-gradient(circle at -10% 30%, rgba(250, 105, 20, 0.2), transparent 50%), linear-gradient(135deg, var(--color-dark) 0%, var(--color-motion-dark-grey) 100%);
    display: block;
    overscroll-behavior: contain;
    overflow: hidden;
    backdrop-filter: blur(0px);
}

.menu-toggle:checked ~ .menu-overlay {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    backdrop-filter: blur(4px);
    transition: opacity 0.4s ease-in-out, visibility 0s linear 0s, left 0.4s ease-in-out;
}

/* Hide large menu */
.mobile-only {
    display: none;
}

/* ====================================
       Mobile Responsive Styles
       ==================================== */

@media (max-width: 768px) {

    .site-header {
        top: 2vh;
    }

    .nav-container {
        padding: .5rem;
    }

    /* Hide large menu */
    .submenu, .has-submenu > .menu-link {
        display: none;
    }

    .mobile-only {
        display: block;
    }

    /* Show hamburger menu */
    .menu-toggle-label {
        display: block;
    }

    /* Menu wrapper transitions */
    .menu-wrapper {
        position: fixed;
        top: 10vh;
        left: 0;
        right: 0;
        max-width: 90vw;
        height: auto;
        max-height: 80vh;
        margin: 0;
        border-radius: 2rem;
        /*         border: solid 1px rgba(255, 255, 255, 0.18);
       background: rgba(48, 52, 55, 0.95);*/
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        transform: translateY(-1rem) scale(0.95);
        opacity: 0;
        transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.8s ease-in-out, visibility 0s linear 0.8s;
        overflow-y: auto;
        overflow-x: hidden;
        padding: 2rem 1rem;
        z-index: 999;
        /*        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);*/
        visibility: hidden;
        pointer-events: none;
    }

    /* Show menu when checkbox is checked */
    .menu-toggle:checked ~ .nav-container .menu-wrapper {
        transform: translateY(0) scale(1);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.4s ease-in-out, visibility 0s linear 0s;
    }

    /* Reverse animation when menu closes (unchecked) */
    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper {
        transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.4s ease-in-out, visibility 0s linear 0.4s;
    }

    /* Staggered animation for menu items */
    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item {
        animation: slideInItem 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
        opacity: 0;
        transform: translateX(-20px);
    }

    /* Reverse staggered animation when closing */
    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item {
        animation: slideOutItem 0.3s ease-in-out forwards;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(1) {
        animation-delay: 0.1s;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(2) {
        animation-delay: 0.15s;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(3) {
        animation-delay: 0.2s;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(4) {
        animation-delay: 0.25s;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(5) {
        animation-delay: 0.3s;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(6) {
        animation-delay: 0.35s;
    }

    /* Reverse stagger delays (items disappear in reverse order) */
    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item:nth-child(1) {
        animation-delay: 0.25s;
    }

    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item:nth-child(2) {
        animation-delay: 0.2s;
    }

    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item:nth-child(3) {
        animation-delay: 0.15s;
    }

    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item:nth-child(4) {
        animation-delay: 0.1s;
    }

    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item:nth-child(5) {
        animation-delay: 0.05s;
    }

    .menu-toggle:not(:checked) ~ .nav-container .menu-wrapper .menu-item:nth-child(6) {
        animation-delay: 0s;
    }

    /* Stack menu items vertically */
    .menu-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        width: 100%;
        height: auto;
    }

    .menu-link {
        width: 100%;
        padding: 1rem;
        border-radius: 0;
    }

    /* Mobile submenu - expand below parent on hover/focus */
    .submenu {
        position: static;
        width: 100%;
        box-shadow: none;
        border-radius: 0;
        background: var(--submenu-mobile-bg, rgba(0, 0, 0, 0.3));
        margin: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transform: none;
        transition: max-height 0.3s ease-in-out, padding 0.3s ease-in-out, opacity 0.3s, visibility 0.3s;
    }



    /* Show submenu on hover/focus-within */
    .has-submenu:hover > .submenu,
    .has-submenu:focus-within > .submenu {
        max-height: 1000px;
        padding: 0.5rem 0;
        opacity: 1;
        visibility: visible;
    }

    /* Rotate indicator when submenu is visible */
    .has-submenu:hover > .menu-link .submenu-indicator,
    .has-submenu:focus-within > .menu-link .submenu-indicator {
        transform: rotate(-180deg);
    }

    .submenu-link {
        padding-left: 2rem;
    }

    /* Utility menu in mobile */
    .utility-menu {
        margin-left: auto;
    }
}

/* Keyframe animation for menu items */
@keyframes slideInItem {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutItem {
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

/* ====================================
       Keyboard Navigation & Accessibility
       ==================================== */

/* Skip to content link for keyboard users */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-motion-orange);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 9999;
}

    .skip-link:focus {
        top: 0;
    }



/* ================================
    Details style menu
=================================== */

/* Light styling for presentation */
details {
    margin-block: .5rem;
    padding-block: .5rem;
}

summary {
    /* Pin the custom marker to the container */
    position: relative;
    /* Register summary as an anchor element */
    anchor-name: --summary;
    padding-left: 1rem;
    &::marker

{
    content: "";
}
/* Down chevron using pseudo-element */
&::before {
    content: "";
    position: absolute;
    position-anchor: --summary;
    position-area: top end;
    inset-block-start: 50%;
    inset-inline-end: 10px;
    width: 0.5rem;
    height: 0.5rem;
    border-right: 3px solid var(--color-light);
    border-bottom: 3px solid var(--color-light);
    transform: translateY(-75%) rotate(45deg);
    transition: transform 0.3s ease;
    transform-origin: center;
}

}

/* Rotate the chevron when open */
details[open] summary::before {
    transform: translateY(-25%) rotate(-135deg);
}

details ul {
    inset: 0;
    padding-inline-start: 0;
}

    details ul li {
        list-style: none;
        padding-inline-start: 0;
    }

/* Mobile submenu - prevent link from covering the entire summary */
.mobile-only summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

    .mobile-only summary a {
        flex: 1;
        /* Prevent link from blocking the toggle marker */
        margin-right: 5rem;
    }

    /* Ensure the disclosure triangle is clickable */
    .mobile-only summary::marker,
    .mobile-only summary::-webkit-details-marker {
        flex-shrink: 0;
    }


/* ====================================
       Reduced Motion Support
       ==================================== */

@media (prefers-reduced-motion: reduce) {
    /* Disable site header animation */
    .site-header {
        animation: none;
    }

    /* Remove all transitions for interactive elements */
    .hamburger-line,
    .menu-link,
    .submenu-indicator,
    .submenu,
    .submenu-link,
    .utility-button,
    .utility-link,
    .menu-overlay,
    .menu-wrapper {
        transition: none !important;
    }

    /* Disable hamburger animation - keep final state */
    .menu-toggle:checked ~ .menu-toggle-label .hamburger-line {
        transition: none;
    }

    /* Show submenu immediately without transform */
    .submenu {
        transform: none;
    }

    .has-submenu:hover > .submenu,
    .has-submenu:focus-within > .submenu {
        transform: none;
    }

    /* Disable submenu indicator rotation */
    .submenu-indicator {
        transition: none;
    }

    .has-submenu:hover > .menu-link .submenu-indicator,
    .has-submenu:focus-within > .menu-link .submenu-indicator {
        transform: none;
    }

    /* Disable mobile menu animations */
    .menu-wrapper {
        transform: none;
        transition: opacity 0.1s, visibility 0s;
    }

    .menu-toggle:checked ~ .nav-container .menu-wrapper {
        transform: none;
        transition: opacity 0.1s, visibility 0s;
    }

        /* Disable staggered menu item animations */
        .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item {
            animation: none;
            opacity: 1;
            transform: none;
        }

            /* Remove all animation delays */
            .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(1),
            .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(2),
            .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(3),
            .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(4),
            .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(5),
            .menu-toggle:checked ~ .nav-container .menu-wrapper .menu-item:nth-child(6) {
                animation-delay: 0s;
            }

    /* Remove overlay backdrop blur/fade animation */
    .menu-overlay {
        backdrop-filter: none;
        transition: opacity 0.1s, visibility 0s;
    }

    .menu-toggle:checked ~ .menu-overlay {
        backdrop-filter: none;
        transition: opacity 0.1s, visibility 0s;
    }

    /* Disable details/summary chevron animation */
    summary::before {
        transition: none;
    }

    details[open] summary::before {
        transition: none;
    }

    /* Disable skip link animation */
    .skip-link {
        transition: none;
    }

    /* Disable all keyframe animations */
    @keyframes slideInItem {
        from, to {
            opacity: 1;
            transform: none;
        }
    }

    /* Mobile: Remove max-height transition for submenus */
    @media (max-width: 768px) {
        .submenu {
            transition: none;
        }

        .has-submenu:hover > .submenu,
        .has-submenu:focus-within > .submenu {
            transition: none;
        }

        /* Keep mobile submenu indicator static */
        .has-submenu:hover > .menu-link .submenu-indicator,
        .has-submenu:focus-within > .menu-link .submenu-indicator {
            transform: none;
        }
    }

    /* Ensure SVG/logo transitions are removed */
    .logo-container svg,
    .menu-brand-logo,
    .theme-icon {
        transition: none;
    }

    /* Remove any color/background transitions */
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}