/* Header styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.header--hidden {
    transform: translateY(-100%);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.header__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
}

.header__logo__img {
    width: 60px;
    height: 60px;
    margin-right: 10px;
}

.header__logo__text {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Main navigation */
.main-nav {
    display: flex;
    align-items: center;
}

.main-nav__list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav__item {
    position: relative;
    margin-right: 20px;
}

.main-nav__link {
    display: block;
    padding: 10px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.main-nav__link:hover,
.main-nav__link.active {
    color: #0066cc;
}

.main-nav__link--dropdown::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid currentColor;
}

/* Dropdown menu */
.main-nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    width: 220px;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 10;
}

.main-nav__item:hover .main-nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-nav__dropdown ul {
    list-style: none;
    margin: 0;
    padding: 10px 0;
}

.main-nav__dropdown li {
    padding: 0;
}

.main-nav__dropdown a {
    display: block;
    padding: 8px 15px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.main-nav__dropdown a:hover {
    background-color: #f5f5f5;
    color: #0066cc;
}

/* Loading state */
.loading-item {
    padding: 8px 15px;
    color: #666;
    font-style: italic;
}

/* Category count */
.category-count {
    color: #666;
    font-size: 0.9em;
}

/* Mobile menu button */
/* Minimum 44x44px for touch accessibility (WCAG 2.1 Level AAA) */
.menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 12px; /* Increased for larger touch target */
    min-width: 44px; /* Ensures minimum touch target size */
    min-height: 44px; /* Ensures minimum touch target size */
}

.menu-btn__icon {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    position: relative;
    transition: background-color 0.3s ease;
}

.menu-btn__icon::before,
.menu-btn__icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #333;
    transition: transform 0.3s ease;
}

.menu-btn__icon::before {
    transform: translateY(-8px);
}

.menu-btn__icon::after {
    transform: translateY(8px);
}

.menu-btn[aria-expanded="true"] .menu-btn__icon {
    background-color: transparent;
}

.menu-btn[aria-expanded="true"] .menu-btn__icon::before {
    transform: rotate(45deg);
}

.menu-btn[aria-expanded="true"] .menu-btn__icon::after {
    transform: rotate(-45deg);
}

/* Responsive styles */
@media (max-width: 768px) {
    .header__inner {
        height: 60px;
    }
    
    .header__logo__img {
        width: 40px;
        height: 40px;
    }
    
    .header__logo__text {
        font-size: 1.2rem;
    }
    
    .main-nav {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: #fff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .main-nav__list {
        flex-direction: column;
        width: 100%;
    }
    
    .main-nav__item {
        margin-right: 0;
        margin-bottom: 10px;
        width: 100%;
    }
    
    .main-nav__dropdown {
        position: static;
        width: 100%;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
    }
    
    .main-nav__item.active .main-nav__dropdown {
        display: block;
    }
    
    .menu-btn {
        display: block;
    }
}