/* ===================================
   PETGAS Header - Desktop Navigation
   ================================= */

/* Desktop Navigation Container */
.desktop-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px; /* Explicit height */
    padding: 0 2rem;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    width: 100%;
}

/* Logo Section */
.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    transition: transform var(--animation-duration) var(--animation-easing);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
    object-position: center;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--header-gap);
    flex: 1;
    justify-content: center;
    margin: 0 var(--header-gap);
}

/* Media Queries for Desktop Navigation */
@media screen and (max-width: 768px) {
    .desktop-nav {
        display: none; /* Hide on mobile */
    }
}

@media screen and (min-width: 769px) {
    .desktop-nav {
        display: flex; /* Show on desktop */
    }
    
    .mobile-menu-toggle {
        display: none; /* Hide mobile menu button on desktop */
    }
}

.nav-menu li {
    position: relative;
}

/* Navigation Links - Basic Structure */
.nav-link {
    display: inline-block;
    padding: 0.75rem 1rem;
    font-size: var(--header-font-size-base);
    font-weight: var(--header-font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--header-nav-text);
    position: relative;
    transition: all var(--animation-duration) var(--animation-easing);
    border-radius: var(--header-border-radius);
}

/* Navigation Link States */
.nav-link:hover {
    color: var(--header-accent-color);
    background: rgba(26, 188, 156, 0.1);
}

.nav-link.active {
    color: var(--header-accent-color);
    background: rgba(26, 188, 156, 0.15);
}

.nav-link:focus {
    background: rgba(26, 188, 156, 0.2);
}

/* Active Link Indicator */
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 2px;
    background: var(--header-accent-color);
    border-radius: 1px;
}

/* Language Selector */
.language-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    padding: 0.5rem;
    border-radius: var(--header-border-radius);
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.lang-btn {
    padding: 0.5rem 0.75rem;
    font-size: var(--header-font-size-base);
    font-weight: var(--header-font-weight-semibold);
    color: var(--header-nav-text);
    border-radius: var(--header-border-radius);
    transition: all var(--animation-duration) var(--animation-easing);
    min-width: 44px;
    text-align: center;
}

.lang-btn:hover {
    background: rgba(26, 188, 156, 0.1);
    color: var(--header-accent-color);
}

.lang-btn.active {
    background: var(--header-accent-color);
    color: white;
}

.lang-btn:focus {
    background: rgba(26, 188, 156, 0.2);
}

.lang-separator {
    color: var(--header-nav-text);
    opacity: 0.6;
    font-weight: var(--header-font-weight-normal);
}

/* Responsive Adjustments for Desktop Navigation */

/* Large Desktop (1440px+) */
@media screen and (min-width: 90em) {
    .desktop-nav {
        padding: 0 2rem;
    }
    
    .nav-menu {
        gap: 2rem;
    }
    
    .nav-link {
        padding: 1rem 1.25rem;
    }
}

/* Standard Desktop (1024px - 1439px) */
@media screen and (min-width: var(--breakpoint-mobile)) and (max-width: 89.9375em) {
    .nav-menu {
        gap: var(--header-gap);
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.8rem;
    }
}

/* Tablet Landscape (when desktop nav might be shown) */
@media screen and (min-width: var(--breakpoint-mobile)) and (max-width: 75em) {
    .desktop-nav {
        padding: 0 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
        margin: 0 1rem;
    }
    
    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }
    
    .nav-logo img {
        height: 35px;
    }
}

/* Performance Optimizations */
.desktop-nav {
    contain: layout style;
}

.nav-link,
.lang-btn {
    contain: layout style;
}

/* Ensure proper touch targets on touch devices */
@media (pointer: coarse) {
    .nav-link,
    .lang-btn {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .desktop-nav {
        border-bottom: 2px solid var(--header-nav-text);
    }
    
    .nav-link:hover,
    .nav-link.active {
        background: var(--header-accent-color);
        color: white;
    }
    
    .lang-btn:hover,
    .lang-btn.active {
        border: 2px solid var(--header-accent-color);
    }
}

/* Forced colors mode (Windows High Contrast) */
@media (forced-colors: active) {
    .desktop-nav {
        background: Canvas;
        border-bottom: 1px solid ButtonText;
    }
    
    .nav-link,
    .lang-btn {
        color: LinkText;
        forced-color-adjust: none;
    }
    
    .nav-link:hover,
    .nav-link.active,
    .lang-btn:hover,
    .lang-btn.active {
        background: Highlight;
        color: HighlightText;
    }
}