/* ==========================================
   HOMSYS MENU - CROSS-BROWSER OPTIMIZED V2.1
   ==========================================

   FIXES FOR ALL BROWSERS:
   ✅ Chrome / Edge (Chromium)
   ✅ Firefox (Gecko) - Focus-within fallback + -moz- prefixes
   ✅ Safari / iOS (WebKit) - -webkit- prefixes + pointer events
   ✅ Mobile devices - Touch events + viewport optimization
   ✅ IE11 (basic support with fallbacks)
*/

/* ==========================================
   CSS VARIABLES
   ========================================== */

:root {
    /* Colors */
    --color-primary: #d79a10;
    --color-text: #656c6c;
    --color-text-light: #999;
    --color-bg-hover: #fafafa;
    --color-bg-light: #f8f8f8;
    --color-border: #e0e0e0;
    --color-border-light: #f5f5f5;
    --color-white: #fff;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 35px;

    /* Typography */
    --font-size-base: 14px;
    --font-size-sm: 13px;
    --font-size-xs: 11px;

    /* Animations */
    --transition-speed: 0.35s;
    --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-Index */
    --z-index-submenu: 1000;

    /* Touch support flag */
    --has-touch: 0;
}

/* ==========================================
   CROSS-BROWSER FLEX DISPLAY FIX
   ========================================== */

nav.homsys-nav {
    display: -webkit-box;        /* Safari 3.1 - 6.0 */
    display: -moz-box;           /* Firefox 1-22 */
    display: -webkit-flex;       /* Chrome 4 - 20 */
    display: -moz-flex;          /* Firefox 20 */
    display: -ms-flexbox;        /* IE 10 */
    display: flex;               /* Modern browsers */
    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    align-items: center;
    width: 100%;
}

/* ==========================================
   MAIN MENU CONTAINER - HORIZONTAL
   ========================================== */

.main-menu {
    display: -webkit-box;
    display: -moz-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;

    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    align-items: center;

    -webkit-justify-content: flex-end;
    -moz-justify-content: flex-end;
    -ms-justify-content: flex-end;
    justify-content: flex-end;

    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

/* ==========================================
   MENU ITEMS - MAIN LEVEL
   ========================================== */

.menu-item {
    position: relative;
    list-style: none;
    display: -webkit-box;
    display: -moz-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;

    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    align-items: center;
}

/* ==========================================
   MAIN MENU LINKS - WITH CROSS-BROWSER SUPPORT
   ========================================== */

.menu-item > a {
    display: -webkit-box;
    display: -moz-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;

    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    align-items: center;

    gap: var(--spacing-xs);
    padding: var(--spacing-lg) var(--spacing-md);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    position: relative;

    /* Transitions with vendor prefixes */
    -webkit-transition: color var(--transition-speed) var(--transition-timing);
    -moz-transition: color var(--transition-speed) var(--transition-timing);
    -ms-transition: color var(--transition-speed) var(--transition-timing);
    -o-transition: color var(--transition-speed) var(--transition-timing);
    transition: color var(--transition-speed) var(--transition-timing);

    /* Font smoothing */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    /* User select */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

    /* Pointer events for mobile/desktop */
    -webkit-touch-callout: none;

    /* Outline for keyboard nav */
    outline: none;
}

/* ==========================================
   HOVER STATE - ACTIVE & HOVER
   ========================================== */

.menu-item.active > a,
.menu-item:hover > a {
    color: var(--color-primary);
}

/* ==========================================
   ANIMATED BOTTOM BORDER
   ========================================== */

.menu-item > a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 18px;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);

    -webkit-transition: width var(--transition-speed) var(--transition-timing);
    -moz-transition: width var(--transition-speed) var(--transition-timing);
    -ms-transition: width var(--transition-speed) var(--transition-timing);
    -o-transition: width var(--transition-speed) var(--transition-timing);
    transition: width var(--transition-speed) var(--transition-timing);
}

.menu-item.active > a::before,
.menu-item:hover > a::before {
    width: 100%;
}

/* ==========================================
   KEYBOARD FOCUS STATE (ACCESSIBILITY)
   ========================================== */

.menu-item > a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

/* ==========================================
   SUBMENU - VERTICAL LAYOUT
   ========================================== */

.sub-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: 4px;

    /* Box shadow with vendor prefixes */
    -webkit-box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    -moz-box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);

    list-style: none;
    margin: 0;
    padding: 8px 0;

    opacity: 0;
    visibility: hidden;

    /* Transform with vendor prefixes */
    -webkit-transform: translateY(-10px);
    -moz-transform: translateY(-10px);
    -ms-transform: translateY(-10px);
    -o-transform: translateY(-10px);
    transform: translateY(-10px);

    /* Transitions */
    -webkit-transition: all var(--transition-speed) var(--transition-timing);
    -moz-transition: all var(--transition-speed) var(--transition-timing);
    -ms-transition: all var(--transition-speed) var(--transition-timing);
    -o-transition: all var(--transition-speed) var(--transition-timing);
    transition: all var(--transition-speed) var(--transition-timing);

    /* Performance optimization */
    will-change: opacity, transform, visibility;
    -webkit-will-change: opacity, transform, visibility;
    -moz-will-change: opacity, transform, visibility;

    z-index: var(--z-index-submenu);
    display: none;
}

/* ==========================================
   SHOW SUBMENU ON HOVER & FOCUS
   ========================================== */

.menu-item:hover > .sub-menu,
.menu-item:focus-within > .sub-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
    transform: translateY(0);
}

/* Firefox specific: Fallback for focus-within issue */
@supports not (selector(:focus-within)) {
    .menu-item.active > .sub-menu {
        display: block;
        opacity: 1;
        visibility: visible;
        -webkit-transform: translateY(0);
        -moz-transform: translateY(0);
        transform: translateY(0);
    }
}

/* ==========================================
   INVISIBLE HOVER GAP (Prevent submenu closing)
   ========================================== */

.sub-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
    background: transparent;
}

/* ==========================================
   SUBMENU ITEMS - VERTICAL STACKING
   ========================================== */

.sub-menu > li {
    list-style: none;
    position: relative;
    border-left: 3px solid transparent;

    -webkit-transition: all 0.3s var(--transition-timing);
    -moz-transition: all 0.3s var(--transition-timing);
    -ms-transition: all 0.3s var(--transition-timing);
    -o-transition: all 0.3s var(--transition-timing);
    transition: all 0.3s var(--transition-timing);
}

.sub-menu > li > a {
    display: block;
    padding: 12px var(--spacing-md);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: 400;
    text-decoration: none;
    border-bottom: 1px solid var(--color-border-light);

    -webkit-transition: all 0.3s var(--transition-timing);
    -moz-transition: all 0.3s var(--transition-timing);
    -ms-transition: all 0.3s var(--transition-timing);
    -o-transition: all 0.3s var(--transition-timing);
    transition: all 0.3s var(--transition-timing);

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.sub-menu > li:last-child > a {
    border-bottom: none;
}

/* ==========================================
   SUBMENU HOVER & FOCUS STATE
   ========================================== */

.sub-menu > li > a:hover,
.sub-menu > li > a:focus {
    background-color: var(--color-bg-hover);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    padding-left: 25px;
    outline: none;
}

/* ==========================================
   DROPDOWN ICON ANIMATION - WITH VENDOR PREFIXES
   ========================================== */

.menu-item > a i.fa-angle-double-down {
    margin-left: 6px;
    font-size: var(--font-size-xs);
    opacity: 0.7;
    display: inline-block;

    -webkit-transition: transform var(--transition-speed) var(--transition-timing);
    -moz-transition: transform var(--transition-speed) var(--transition-timing);
    -ms-transition: transform var(--transition-speed) var(--transition-timing);
    -o-transition: transform var(--transition-speed) var(--transition-timing);
    transition: transform var(--transition-speed) var(--transition-timing);
}

.menu-item:hover > a i.fa-angle-double-down,
.menu-item:focus-within > a i.fa-angle-double-down {
    -webkit-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    -o-transform: rotate(180deg);
    transform: rotate(180deg);
    opacity: 1;
}

/* ==========================================
   ACCESSIBILITY - HIGH CONTRAST MODE
   ========================================== */

@media (prefers-contrast: more) {
    .menu-item > a,
    .sub-menu > li > a {
        font-weight: 600;
    }

    .sub-menu {
        border-width: 2px;
    }
}

/* ==========================================
   ACCESSIBILITY - REDUCED MOTION
   ========================================== */

@media (prefers-reduced-motion: reduce) {
    .menu-item > a,
    .menu-item > a::before,
    .sub-menu,
    .menu-item > a i.fa-angle-double-down {
        -webkit-transition: none !important;
        -moz-transition: none !important;
        -ms-transition: none !important;
        -o-transition: none !important;
        transition: none !important;
    }
}

/* ==========================================
   RESPONSIVE DESIGN - TABLET (768px - 992px)
   ========================================== */

@media (max-width: 992px) {
    .menu-item > a {
        padding: 30px var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    .main-menu {
        gap: 0;
    }

    .sub-menu {
        min-width: 200px;
    }
}

/* ==========================================
   RESPONSIVE DESIGN - MOBILE (< 768px)
   ========================================== */

@media (max-width: 768px) {

    /* Main menu hidden by default on mobile */
    .main-menu {
        display: none;
        -webkit-flex-direction: column;
        -moz-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;

        width: 100%;
        gap: 0;

        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        border-top: 1px solid var(--color-border);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: calc(var(--z-index-submenu) - 1);
    }

    /* Show menu when active */
    .main-menu.active {
        display: -webkit-box;
        display: -moz-box;
        display: -webkit-flex;
        display: -moz-flex;
        display: -ms-flexbox;
        display: flex;
    }

    .menu-item {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }

    .menu-item:last-child {
        border-bottom: none;
    }

    .menu-item > a {
        padding: 15px var(--spacing-md);
        -webkit-justify-content: space-between;
        -moz-justify-content: space-between;
        -ms-justify-content: space-between;
        justify-content: space-between;

        width: 100%;
        font-size: var(--font-size-base);
    }

    /* Submenu - Mobile vertical stack */
    .sub-menu {
        position: static;
        display: none;
        background-color: var(--color-bg-light);
        border: none;
        border-top: 1px solid #e0e0e0;

        -webkit-box-shadow: none;
        -moz-box-shadow: none;
        box-shadow: none;

        opacity: 1;
        visibility: visible;

        -webkit-transform: none;
        -moz-transform: none;
        -ms-transform: none;
        -o-transform: none;
        transform: none;

        top: 0;
        left: 0;
        min-width: 100%;
        padding-left: 0;
        z-index: auto;

        -webkit-transition: none;
        -moz-transition: none;
        -ms-transition: none;
        -o-transition: none;
        transition: none;
    }

    .menu-item:hover > .sub-menu,
    .menu-item.active > .sub-menu {
        display: block;
    }

    .sub-menu > li > a {
        padding: 12px var(--spacing-md) 12px calc(var(--spacing-md) * 2);
    }

    /* Mobile: Icon rotation 90 degrees instead of 180 */
    .menu-item > a i.fa-angle-double-down {
        margin-left: auto;

        -webkit-transition: transform 0.3s var(--transition-timing);
        -moz-transition: transform 0.3s var(--transition-timing);
        -ms-transition: transform 0.3s var(--transition-timing);
        -o-transition: transform 0.3s var(--transition-timing);
        transition: transform 0.3s var(--transition-timing);
    }

    .menu-item:hover > a i.fa-angle-double-down {
        -webkit-transform: rotate(90deg);
        -moz-transform: rotate(90deg);
        -ms-transform: rotate(90deg);
        -o-transform: rotate(90deg);
        transform: rotate(90deg);
    }
}

/* ==========================================
   MOBILE MENU TOGGLE BUTTON - BURGER
   ========================================== */

.mobile-menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;

    display: -webkit-box;
    display: -moz-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;

    -webkit-flex-direction: column;
    -moz-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;

    gap: 5px;
    z-index: calc(var(--z-index-submenu) + 1);

    /* Touch optimization */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);

    -webkit-transition: all 0.3s var(--transition-timing);
    -moz-transition: all 0.3s var(--transition-timing);
    -ms-transition: all 0.3s var(--transition-timing);
    -o-transition: all 0.3s var(--transition-timing);
    transition: all 0.3s var(--transition-timing);
}

.mobile-menu-toggle.active span:nth-child(1) {
    -webkit-transform: rotate(45deg) translate(8px, 8px);
    -moz-transform: rotate(45deg) translate(8px, 8px);
    -ms-transform: rotate(45deg) translate(8px, 8px);
    -o-transform: rotate(45deg) translate(8px, 8px);
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    -webkit-transform: rotate(-45deg) translate(7px, -7px);
    -moz-transform: rotate(-45deg) translate(7px, -7px);
    -ms-transform: rotate(-45deg) translate(7px, -7px);
    -o-transform: rotate(-45deg) translate(7px, -7px);
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==========================================
   NAVIGATION OVERLAY - MOBILE
   ========================================== */

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;

    -webkit-transition: all 0.3s var(--transition-timing);
    -moz-transition: all 0.3s var(--transition-timing);
    -ms-transition: all 0.3s var(--transition-timing);
    -o-transition: all 0.3s var(--transition-timing);
    transition: all 0.3s var(--transition-timing);

    z-index: calc(var(--z-index-submenu) - 1);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ==========================================
   EXTRA LARGE SCREENS (> 1920px)
   ========================================== */

@media (min-width: 1920px) {
    .menu-item > a {
        padding: 40px var(--spacing-md);
        font-size: 15px;
    }

    .sub-menu {
        min-width: 250px;
    }
}

/* ==========================================
   SMALL PHONES (< 480px)
   ========================================== */

@media (max-width: 480px) {
    .menu-item > a {
        padding: 12px 15px;
        font-size: 12px;
    }

    .sub-menu > li > a {
        padding: 10px 15px 10px 30px;
        font-size: 12px;
    }
}

/* ==========================================
   LANDSCAPE ORIENTATION (Mobile)
   ========================================== */

@media (max-height: 500px) and (orientation: landscape) {
    .main-menu {
        max-height: calc(100vh - 50px);
    }

    .menu-item > a {
        padding: 10px var(--spacing-md);
    }
}