/**
 * Mobile Navigation Component - PNK Group Theme
 * Hamburger menu with full-screen slide-in overlay
 * Phase 1: Mobile Foundation & Critical Navigation
 */

/* ==========================================================================
   Mobile Header
   ========================================================================== */

/* Header container - mobile first */
header {
    position: fixed;
    top: 35px; /* Position below top panel */
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background-color: var(--color-white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: box-shadow var(--mobile-transition-speed) var(--mobile-transition-easing);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--mobile-header-height);
    padding-top: 0;
    padding-bottom: 0;
}

/* Main content padding to account for fixed header */
main {
    padding-top: var(--mobile-header-height);
}

/* ==========================================================================
   Logo - Mobile Optimized
   ========================================================================== */

.logo {
    flex-shrink: 0;
    z-index: 1001;
}

.logo a {
    display: block;
    padding: 8px 0;
    margin: 0;
}

.logo-img {
    height: 32px;
    width: auto;
    transition: height var(--mobile-transition-speed) var(--mobile-transition-easing);
}

/* ==========================================================================
   Desktop Navigation - Hidden on Mobile
   ========================================================================== */

.desktop-nav {
    display: none;
}

/* ==========================================================================
   Mobile Menu Toggle (Hamburger)
   ========================================================================== */

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    padding: 8px 10px;
    padding-top: 11px; /* Align with logo top */
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
    position: relative;
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--brand-primary-blue);
    outline-offset: 2px;
}

/* Hamburger lines - smaller and more compact */
.burger-line {
    display: block;
    width: 16px;
    height: 1.5px;
    background-color: var(--color-gray-900);
    margin: 0.7px 0;
    transition: all var(--mobile-transition-speed) var(--mobile-transition-easing);
    border-radius: 1px;
}

/* Hamburger animation when menu is open */
.mobile-menu-toggle[aria-expanded="true"] .burger-line:nth-child(1) {
    transform: rotate(45deg) translate(2.5px, 2.5px);
}

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

.mobile-menu-toggle[aria-expanded="true"] .burger-line:nth-child(3) {
    transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* ==========================================================================
   Mobile Menu Overlay
   ========================================================================== */

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 100%;
    background-color: var(--mobile-menu-bg);
    transform: translateX(100%);
    transition: transform var(--mobile-transition-speed) var(--mobile-transition-easing);
    z-index: var(--z-mobile-menu); /* Slides under header */
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Menu open state */
.mobile-menu-overlay.active {
    transform: translateX(0);
}

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

/* ==========================================================================
   Mobile Menu Header
   ========================================================================== */

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--mobile-header-height);
    padding: 0 var(--mobile-spacing-md);
    background-color: var(--color-white);
    border-bottom: 1px solid rgba(43, 72, 141, 0.1);
}

.mobile-menu-logo {
    flex-shrink: 0;
}

.mobile-menu-logo img {
    height: 32px;
    width: auto;
}

.mobile-menu-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-close svg {
    width: 24px;
    height: 24px;
    color: var(--color-gray-900);
}

/* ==========================================================================
   Mobile Navigation Menu
   ========================================================================== */

.mobile-menu-nav {
    flex: 1;
    padding: var(--mobile-spacing-lg) var(--mobile-spacing-md);
    overflow-y: auto;
}

.mobile-nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-menu li {
    border-bottom: 1px solid rgba(43, 72, 141, 0.1);
}

.mobile-nav-menu li:last-child {
    border-bottom: none;
}

.mobile-nav-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--touch-target-min);
    padding: 1rem 0;
    color: var(--color-gray-900);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: color var(--mobile-transition-speed) var(--mobile-transition-easing);
    margin: 0;
}

/* Arrow icon for menu items */
.mobile-nav-menu a::after {
    content: '▸';
    font-size: 1.25rem;
    color: var(--color-gray-900);
    transition: color var(--mobile-transition-speed) var(--mobile-transition-easing);
}

/* Hover/Active states */
.mobile-nav-menu a:hover,
.mobile-nav-menu a:active,
.mobile-nav-menu a:focus {
    color: var(--brand-primary-orange);
}

.mobile-nav-menu a:hover::after,
.mobile-nav-menu a:active::after,
.mobile-nav-menu a:focus::after {
    color: var(--brand-primary-orange);
}

/* Submenu styles (if present) - true accordion behavior */
.mobile-nav-menu .sub-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    padding-left: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out, padding 0.4s ease-in-out;
}

.mobile-nav-menu .sub-menu.active {
    max-height: 500px;
    padding-top: 10px;
    padding-bottom: 10px;
    padding-left: 20px;
}

.mobile-nav-menu li.menu-item-has-children > a {
    position: relative;
}

/* ==========================================================================
   Mobile Menu Footer
   ========================================================================== */

.mobile-menu-footer {
    margin-top: auto;
    padding: var(--mobile-spacing-lg) var(--mobile-spacing-md);
    background-color: var(--mobile-menu-footer-bg);
}

.mobile-menu-footer-links {
    display: flex;
    gap: var(--mobile-spacing-md);
    margin-bottom: var(--mobile-spacing-md);
}

.mobile-menu-footer-link {
    color: var(--color-white);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    padding: var(--mobile-spacing-xs);
    margin: calc(var(--mobile-spacing-xs) * -1);
    transition: color var(--mobile-transition-speed) var(--mobile-transition-easing);
}

.mobile-menu-footer-link:hover,
.mobile-menu-footer-link:focus {
    color: var(--brand-primary-orange);
}

/* Social icons in footer - centered */
.mobile-menu-social {
    display: flex;
    justify-content: center;
    gap: var(--mobile-spacing-md);
}

.mobile-menu-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    color: var(--color-white);
    transition: color var(--mobile-transition-speed) var(--mobile-transition-easing);
    padding: 0;
    margin: 0;
}

.mobile-menu-social a:hover,
.mobile-menu-social a:focus {
    color: var(--brand-primary-orange);
}

.mobile-menu-social svg {
    width: 24px;
    height: 24px;
}

/* ==========================================================================
   Top Panel - Mobile Optimization
   ========================================================================== */

.top-panel {
    background-color: var(--color-gray-900);
    padding: var(--mobile-spacing-sm) 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1003;
    display: block !important; /* Show on mobile */
}

.top-panel-links {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 0 !important;
}

.top-panel-social {
    display: flex !important;
    gap: 8px !important;
    align-items: center !important;
    line-height: 1 !important;
}

.top-panel-social .social-icon {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 32px !important;
    height: 32px !important;
    color: var(--color-white) !important;
    transition: color var(--mobile-transition-speed) var(--mobile-transition-easing) !important;
    line-height: 1 !important;
}

.top-panel-social .social-icon:hover,
.top-panel-social .social-icon:focus {
    color: var(--brand-primary-orange) !important;
}

.top-panel-social .social-icon svg {
    width: 20px !important;
    height: 20px !important;
    fill: currentColor !important;
}

.top-panel-link {
    color: var(--color-white) !important;
    text-decoration: none !important;
    font-size: 0.875rem !important;
    padding: 0 !important;
    font-weight: 500 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    line-height: 1 !important;
    display: flex !important;
    align-items: center !important;
}

/* ==========================================================================
   Tablet Breakpoint: 768px+
   ========================================================================== */

@media (min-width: 768px) {
    /* Show desktop nav, hide mobile menu */
    .desktop-nav {
        display: block;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .mobile-menu-overlay {
        display: none;
    }

    /* Show top panel on tablet/desktop */
    .top-panel {
        display: block;
    }

    /* Top panel horizontal layout */
    .top-panel-links {
        flex-direction: row;
        justify-content: space-between;
    }

    /* Larger logo on desktop */
    .logo-img {
        height: 48px;
    }
}

/* ==========================================================================
   Desktop Breakpoint: 1024px+
   ========================================================================== */

@media (min-width: 1024px) {
    header .container {
        height: 70px;
    }

    main {
        padding-top: 70px;
    }
}

/* ==========================================================================
   Landscape Orientation Adjustments
   ========================================================================== */

@media (max-height: 500px) and (orientation: landscape) {
    .mobile-menu-nav {
        padding: var(--mobile-spacing-md);
    }

    .mobile-nav-menu a {
        padding: 0.75rem 0;
        font-size: 1rem;
    }

    .mobile-menu-footer {
        padding: var(--mobile-spacing-md);
    }
}

/* ==========================================================================
   Accessibility - High Contrast Mode
   ========================================================================== */

@media (prefers-contrast: high) {
    .mobile-nav-menu a {
        border-bottom: 2px solid currentColor;
    }

    .mobile-menu-toggle:focus {
        outline-width: 3px;
    }
}