/* Navigation Menu Styles */
.header-navigation {
    background-color: var(--primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-navigation.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
    min-height: 60px;
    gap: 15px;
}

.nav-back-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    border-radius: 5px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    white-space: nowrap;
}

.nav-back-button:hover {
    background-color: rgba(255, 255, 255, 0.25);
    color: white;
    
    border-color: rgba(255, 255, 255, 0.3);
}

.nav-back-button i {
    font-size: 14px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.mobile-menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
    gap: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 15px 20px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
    border-radius: 0px;
    margin: 0 ;
    position: relative;
    overflow: hidden;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    
}

.nav-link.active {
    
    color: white;
}

.nav-link i {
    font-size: 16px;
    min-width: 16px;
}

.nav-link span {
    font-family: var(--theme-font-family, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif);
}

/* Active state for filter links */
.nav-filter-link.active {
   
    position: relative;
}

/*.nav-filter-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background-color: white;
    border-radius: 2px;
}
*/
/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--theme-primary-color, #007bff);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        padding: 15px 30px;
        justify-content: flex-start;
        border-radius: 0;
        margin: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link:hover {
        background-color: rgba(255, 255, 255, 0.1);
        transform: none;
    }
}

@media (max-width: 480px) {
    .nav-content {
        padding: 0 10px;
        min-height: 50px;
    }
    
    .nav-link {
        padding: 12px 20px;
        font-size: 13px;
    }
    
    .nav-link i {
        font-size: 14px;
    }
}

/* Animation for smooth transitions */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-item {
    animation: slideDown 0.3s ease forwards;
}

.nav-item:nth-child(1) { animation-delay: 0.1s; }
.nav-item:nth-child(2) { animation-delay: 0.2s; }
.nav-item:nth-child(3) { animation-delay: 0.3s; }
.nav-item:nth-child(4) { animation-delay: 0.4s; }
.nav-item:nth-child(5) { animation-delay: 0.5s; }

/* Loading state for filter links */
.nav-filter-link.loading {
    position: relative;
    pointer-events: none;
}

.nav-filter-link.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Focus styles for accessibility */
.nav-link:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .nav-link {
        border: 1px solid white;
    }
    
    .nav-link:hover {
        background-color: white;
        color: var(--theme-primary-color, #007bff);
    }
}