/* Header Navigation Styles */

/* Main Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Logo */
.nav-logo {
    display: flex;
    items-center: space-between;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-logo:hover {
    color: var(--accent-color) !important;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: bold;
    color: var(--fg-primary) !important;
    transition: color var(--transition-fast);
}

/* Logo hover state */
.nav-logo:hover .logo-text {
    color: var(--accent-color) !important;
}

/* Logo red on home page */
.page-home .logo-text {
    color: var(--accent-color) !important;
}

/* Desktop Navigation */
.nav-links {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    position: relative;
    color: var(--fg-primary) !important;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.025em;
    transition: color var(--transition-fast);
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active,
.nav-link[data-active="true"] {
    color: var(--accent-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after,
.nav-link[data-active="true"]::after {
    width: 100% !important;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--fg-primary) !important;
    cursor: pointer;
    padding: 0.75rem;
    margin: -0.25rem;
    transition: color var(--transition-fast);
    z-index: 1001;
    position: relative;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

@media (max-width: 767px) {
    .mobile-menu-btn {
        display: flex !important;
    }
}

.mobile-menu-btn:hover {
    color: var(--accent-color) !important;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.menu-icon,
.close-icon {
    width: 24px;
    height: 24px;
    transition: opacity var(--transition-fast);
}

.close-icon {
    display: none;
}

.mobile-menu-btn.active .menu-icon {
    display: none;
}

.mobile-menu-btn.active .close-icon {
    display: block;
}

/* Mobile Menu */
.mobile-menu {
    display: block;
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background: rgba(13, 17, 23, 0.98);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid var(--border-color);
    transform: translateX(-100%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 999;
    visibility: hidden;
    opacity: 0;
}

@media (min-width: 768px) {
    .mobile-menu {
        display: none !important;
    }
}

.mobile-menu.active {
    transform: translateX(0);
    visibility: visible;
    opacity: 1;
}

.mobile-menu-content {
    padding: 3rem 2rem 2rem 2rem;
    max-width: 400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.mobile-nav-link {
    display: block;
    color: var(--fg-primary) !important;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 1.25rem 2rem;
    margin: 0.5rem 0;
    border: 1px solid transparent;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    text-align: center;
    width: 100%;
    max-width: 280px;
    position: relative;
    overflow: hidden;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--accent-color) !important;
    background: rgba(205, 92, 92, 0.1);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(205, 92, 92, 0.2);
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.mobile-nav-link:hover::before {
    left: 100%;
}

.mobile-nav-link:last-child {
    border-bottom: 1px solid transparent;
}

/* Staggered animation for mobile menu items */
.mobile-menu.active .mobile-nav-link {
    animation: slideInFromLeft 0.6s ease-out forwards;
}

.mobile-menu.active .mobile-nav-link:nth-child(1) { animation-delay: 0.1s; }
.mobile-menu.active .mobile-nav-link:nth-child(2) { animation-delay: 0.2s; }
.mobile-menu.active .mobile-nav-link:nth-child(3) { animation-delay: 0.3s; }
.mobile-menu.active .mobile-nav-link:nth-child(4) { animation-delay: 0.4s; }
.mobile-menu.active .mobile-nav-link:nth-child(5) { animation-delay: 0.5s; }
.mobile-menu.active .mobile-nav-link:nth-child(6) { animation-delay: 0.6s; }

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Mobile menu touch improvements */
@media (max-width: 480px) {
    .mobile-menu-content {
        padding: 2rem 1rem;
    }
    
    .mobile-nav-link {
        font-size: 1.125rem;
        padding: 1rem 1.5rem;
        max-width: 260px;
    }
}

/* Navigation Animations */
.nav-fade-in {
    opacity: 0;
    transform: translateY(-20px);
    animation: navFadeIn 0.6s ease-out forwards;
}

@keyframes navFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header Scroll Effects */
.main-nav.scrolled {
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}

/* Focus States for Accessibility */
.nav-link:focus,
.mobile-nav-link:focus,
.mobile-menu-btn:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Loading State */
.nav-loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Page-specific Active States */
.page-home .nav-link[href="index.html"],
.page-gallery .nav-link[href="galerija.html"],
.page-about .nav-link[href="o-meni.html"],
.page-reviews .nav-link[href="kritike.html"],
.page-media .nav-link[href="mediji.html"],
.page-exhibitions .nav-link[href="izlozbe.html"] {
    color: var(--accent-color) !important;
}

.page-home .nav-link[href="index.html"]::after,
.page-gallery .nav-link[href="galerija.html"]::after,
.page-about .nav-link[href="o-meni.html"]::after,
.page-reviews .nav-link[href="kritike.html"]::after,
.page-media .nav-link[href="mediji.html"]::after,
.page-exhibitions .nav-link[href="izlozbe.html"]::after {
    width: 100%;
}