/**
 * SDC Theme Navigation Styles
 *
 * Header and navigation styles using CSS primitives
 *
 * @package SDC_Theme
 * @since 0.1.0
 */

/* ========================================
   HEADER CONTAINER
   ======================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    pointer-events: none;
}

/* ========================================
   WORDPRESS ADMIN BAR COMPATIBILITY
   ======================================== */

/* Admin bar height variables - WordPress default is 32px desktop, 46px mobile */
:root {
    --admin-bar-height: 32px;
}

@media screen and (max-width: 782px) {
    :root {
        --admin-bar-height: 46px;
    }
}

/* Adjust header position when WordPress admin bar is visible - 
   WordPress adds margin-top to html, so we offset header to sit below admin bar */
.admin-bar .site-header {
    top: var(--admin-bar-height);
}

/* Reset header inner padding - admin bar offset handles the spacing */
.admin-bar .site-header__inner {
    padding-top: var(--space-lg);
}

/* Adjust overlay for admin bar */
.admin-bar .nav-overlay {
    top: var(--admin-bar-height);
    height: calc(100% - var(--admin-bar-height));
}

/* Adjust skip-link in header for admin bar */
.admin-bar .site-header .skip-link:focus {
    top: var(--admin-bar-height);
}

.site-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
    padding: var(--space-lg) var(--site-padding);
    position: relative;
    max-width: var(--container-max, 1440px);
}

/* ========================================
   HEADER TRANSPARENT BACKGROUND
   For use on dark hero sections
   ======================================== */

/* Remove glassmorphism from nav when header is transparent */
.site-header--transparent .nav-container {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

/* When header needs background for light sections */
.site-header--solid .nav-container {
    background-color: var(--color-tertiary);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

/* ========================================
   SITE BRANDING / LOGO
   ======================================== */

.site-branding {
    flex-shrink: 0;
    z-index: 1002;
    pointer-events: auto;
}

/* Logo wrapper - transparent by default, blue background when scrolled */
.site-branding__logo {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition:
        background-color 0.2s ease,
        padding 0.2s ease;
}

.site-header.is-scrolled .site-branding__logo {
    padding: 12px 16px;
    background-color: var(--color-primary);
}

/* Logo styling - applies to both custom logo and fallback */
.site-branding .custom-logo {
    display: block;
    width: 197px;
    height: 60px;
}

.site-branding__logo img {
    display: block;
    width: 166px;
    height: auto;
}

.site-branding .custom-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: left center;
}

/* Hide site title when using custom logo */
.site-branding .site-title,
.site-branding .site-description {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   PRIMARY NAVIGATION - DESKTOP
   ======================================== */

.main-navigation {
    display: flex;
    align-items: center;
    margin-left: auto;
    pointer-events: auto;
}

/* Navigation Container - Glassmorphism */
.nav-container {
    display: flex;
    align-items: center;
    gap: var(--nav-gap);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    background-color: var(--color-glass);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
}

/* ========================================
   NAVIGATION MENU
   ======================================== */

.menu-primary-container {
    display: flex;
    align-items: center;
}

#primary-menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-md);
}

#primary-menu > li {
    position: relative;
}

#primary-menu > li > a {
    display: flex;
    align-items: center;
    gap: var(--nav-link-gap);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: var(--text-button);
    font-weight: var(--font-weight-bold);
    line-height: var(--leading-tight);
    color: var(--color-white);
    transition:
        background-color 0.2s ease,
        color 0.2s ease;
}

/* Hover state for nav links - inactive pages */
#primary-menu > li > a:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    outline: none;
}

/* Current page state for nav links */
#primary-menu > li.current-menu-item > a,
#primary-menu > li.current_page_item > a {
    background-color: var(--color-black);
    color: var(--color-primary);
}

/* Hover state for nav links - current page */
#primary-menu > li.current-menu-item > a:hover,
#primary-menu > li.current_page_item > a:hover {
    color: var(--color-white);
}

/* ========================================
   DROPDOWN MENUS
   ======================================== */

#primary-menu .menu-item-has-children {
    position: relative;
}

/* Invisible hover bridge - allows seamless transition across gap */
#primary-menu .menu-item-has-children::before {
    content: "";
    position: absolute;
    bottom: calc(-1 * var(--space-md));
    left: 0;
    right: 0;
    height: var(--space-md);
    background: transparent;
    z-index: 1002;
}

/* Sub-menu container */
.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 12.5rem;
    margin: var(--space-md) 0 0 0;
    padding: var(--space-sm);
    list-style: none;
    background-color: var(--color-glass);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(calc(-1 * var(--space-sm)));
    transition:
        opacity 0.2s ease,
        visibility 0.2s ease,
        transform 0.2s ease;
    z-index: 1001;
}

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

.sub-menu li {
    margin: 0;
}

.sub-menu a {
    display: block;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--text-body);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-tight);
    color: var(--color-white);
    text-decoration: none;
    transition:
        background-color 0.2s ease,
        color 0.2s ease;
}

.sub-menu a:hover,
.sub-menu a:focus {
    background-color: var(--color-black);
    color: var(--color-white);
    outline: none;
}

.sub-menu a:focus-visible {
    outline: 2px solid var(--color-white);
    outline-offset: -2px;
}

/* Current item in submenu */
.sub-menu .current-menu-item a,
.sub-menu .current_page_item a {
    font-weight: var(--font-weight-demi-bold);
    color: var(--color-primary);
}

/* ========================================
   CONTACT BUTTON IN NAV
   ======================================== */

.nav-cta-button .btn {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--text-button-sm);
}

/* ========================================
   MOBILE MENU TOGGLE
   ======================================== */

.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
    width: var(--space-3xl);
    height: var(--space-3xl);
    padding: 0;
    margin: 0;
    background: var(--color-glass);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-white);
    cursor: pointer;
    transition: background-color 0.2s ease;
    z-index: 1003;
}

.menu-toggle:hover,
.menu-toggle:focus {
    background-color: var(--color-primary);
    outline: none;
}

.menu-toggle[aria-expanded="true"] {
    background-color: var(--color-primary);
}

.menu-icon {
    display: block;
    width: var(--space-xl);
    height: var(--space-xl);
    position: relative;
}

/* Hamburger bars - absolutely positioned for precise center alignment */
.menu-icon .bar {
    display: block;
    width: var(--space-xl);
    height: 2px;
    background-color: currentColor;
    position: absolute;
    left: 0;
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
}

/* Hamburger state - bars evenly distributed */
.menu-icon .bar:nth-child(1) {
    top: var(--space-xs);
}

.menu-icon .bar:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.menu-icon .bar:nth-child(3) {
    bottom: var(--space-xs);
}

/* X animation when menu is open - all bars centered and rotated */
.menu-toggle[aria-expanded="true"] .menu-icon .bar:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-icon .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-icon .bar:nth-child(3) {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* ========================================
   MOBILE NAVIGATION
   ======================================== */

@media screen and (max-width: 768px) {
    .site-header {
        padding: 0 var(--space-md);
    }

    .site-header__inner {
        padding: var(--space-md) 0;
    }

    .site-header.is-scrolled .site-branding__logo {
        padding: 10px 14px;
    }

    .site-branding .custom-logo {
        width: 150px;
        height: 46px;
    }

    .site-branding__logo img {
        width: 130px;
        height: auto;
    }

    /* Show hamburger button on the right */
    .menu-toggle {
        display: flex;
        margin-left: auto;
    }

    /* Hide desktop nav by default on mobile */
    .main-navigation {
        display: none;
    }

    /* Mobile nav container - slide from right (hidden by default) */
    .main-navigation.nav-container {
        display: flex;
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        max-width: 25rem;
        height: 100vh;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: var(--space-7xl) var(--space-md) var(--space-md);
        background-color: var(--color-glass);
        backdrop-filter: var(--backdrop-blur);
        -webkit-backdrop-filter: var(--backdrop-blur);
        transform: translateX(100%);
        transition:
            transform 0.3s ease,
            visibility 0.3s ease;
        z-index: 999;
        margin: 0;
        /* Start hidden off-screen */
        visibility: hidden;
    }

    .main-navigation.nav-container.is-open {
        transform: translateX(0);
        visibility: visible;
    }

    /* Mobile nav admin bar adjustment */
    .admin-bar .main-navigation.nav-container {
        top: var(--admin-bar-height);
        height: calc(100vh - var(--admin-bar-height));
    }

    /* Mobile menu overlay */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: color-mix(
            in srgb,
            var(--color-black) 50%,
            transparent
        );
        opacity: 0;
        visibility: hidden;
        transition:
            opacity 0.3s ease,
            visibility 0.3s ease;
        z-index: 998;
    }

    .nav-overlay.is-active {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .menu-primary-container {
        width: 100%;
    }

    #primary-menu {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    #primary-menu > li {
        width: 100%;
    }

    #primary-menu > li > a {
        padding: var(--space-md);
        font-size: var(--text-h5);
        justify-content: space-between;
    }

    /* Dropdown styles for mobile */
    .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background-color: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        padding: 0 0 0 var(--space-md);
        margin: 0;
        display: none;
    }

    .sub-menu.is-visible {
        display: block;
    }

    .sub-menu a {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-body);
    }

    /* CTA button in mobile menu */
    .nav-cta-button {
        margin: var(--space-md) 0 0 0;
        width: 100%;
    }

    .nav-cta-button .btn {
        width: 100%;
        justify-content: center;
    }

    /* Disable body scroll when menu open */
    body.nav-is-open {
        overflow: hidden;
    }
}

/* ========================================
   ACCESSIBILITY - FOCUS STYLES
   ======================================== */

/* Consolidated focus styles for navigation elements */
.main-navigation a:focus-visible,
.menu-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip link within header */
.site-header .skip-link:focus {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100000;
    background: var(--color-contrast);
    color: var(--color-base);
    padding: var(--space-md);
    font-weight: var(--font-weight-bold);
}

/* ========================================
   REDUCED MOTION
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .nav-container,
    .sub-menu,
    .menu-toggle .bar,
    #primary-menu > li > a,
    .sub-menu a {
        transition: none;
    }
}