.categories-wrapper {
    --primary-text: #0a0a0a;
    --secondary-text: #6b6b6b;
    --border-color: #e5e5e5;
    --accent-color: #0a0a0a;
    --hover-bg: #f8f8f8;
    --card-bg: #ffffff;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 100vh;
    background: #fafafa;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0 3rem;
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInUp 0.6s ease forwards;
}

.hero-section.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.hero-content {
    max-width: 800px;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.breadcrumb-link {
    color: var(--secondary-text);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-link:hover {
    color: var(--primary-text);
}

.breadcrumb-separator {
    color: var(--border-color);
}

.breadcrumb-current {
    color: var(--primary-text);
    font-weight: 500;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 600;
    color: var(--primary-text);
    margin: 0 0 1rem;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--secondary-text);
    margin: 0;
    font-weight: 400;
}

/* Layout */
.main-container {
    padding: 3rem 1rem;
}

.layout-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Sidebar */
.sidebar {
    position: relative;
}

.sidebar-sticky {
    position: sticky;
    top: 170px;
}

.sidebar-header {
    margin-bottom: 2rem;
}

.sidebar-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-text);
    margin: 0 0 1rem;
    letter-spacing: -0.01em;
}

.sidebar-divider {
    height: 2px;
    background: var(--primary-text);
    width: 40px;
}

.category-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent-color);
    transform: scaleY(0);
    transition: var(--transition);
}

.nav-item:hover,
.nav-item.active {
    background: var(--hover-bg);
}

.nav-item.active::before {
    transform: scaleY(1);
}

.nav-item-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.nav-icon-img,
.nav-icon-placeholder {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    flex-shrink: 0;
}

.nav-icon-img {
    object-fit: cover;
}

.nav-icon-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hover-bg);
    color: var(--secondary-text);
    font-size: 1rem;
}

.nav-title {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--primary-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-arrow {
    color: var(--secondary-text);
    font-size: 1.25rem;
    opacity: 0;
    transform: translateX(-8px);
    transition: var(--transition);
    flex-shrink: 0;
}

.nav-item:hover .nav-arrow,
.nav-item.active .nav-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Content Area */
.content-area {
    min-width: 0;
}

.category-section {
    margin-bottom: 5rem;
    animation: fadeIn 0.6s ease forwards;
    opacity: 0;
    animation-delay: 0.2s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.category-section:last-child {
    margin-bottom: 0;
}

.category-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.category-header-content {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.category-icon-wrapper {
    flex-shrink: 0;
}

.category-icon-img,
.category-icon-placeholder {
    width: 56px;
    height: 56px;
    border-radius: 12px;
}

.category-icon-img {
    object-fit: cover;
}

.category-icon-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hover-bg);
    color: var(--primary-text);
    font-size: 1.5rem;
}

.categories-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-text);
    margin: 0 0 0.25rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.category-count {
    font-size: 0.875rem;
    color: var(--secondary-text);
    margin: 0;
}

/* Subcategories Grid */
.subcategories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}

.subcategory-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    opacity: 0;
    animation: slideIn 0.4s ease forwards;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.subcategory-card:hover {
    border-color: var(--primary-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.subcategory-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 0;
    flex: 1;
}

.subcategory-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--hover-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-text);
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.subcategory-card:hover .subcategory-icon {
    background: var(--primary-text);
    color: white;
}

.subcategory-title {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--primary-text);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.subcategory-arrow {
    color: var(--secondary-text);
    font-size: 1.25rem;
    opacity: 0;
    transform: translateX(-8px);
    transition: var(--transition);
    flex-shrink: 0;
}

.subcategory-card:hover .subcategory-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--secondary-text);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    margin: 0;
    font-size: 0.9375rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .layout-grid {
        gap: 3rem;
    }

    .subcategories-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 1024px) {
    .layout-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .sidebar {
        order: -1;
    }

    .sidebar-sticky {
        position: static;
        background: white;
        border-radius: 12px;
        padding: 1.5rem;
        border: 1px solid var(--border-color);
    }

    .sidebar-header {
        margin-bottom: 1.5rem;
    }

    .category-nav {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 0.5rem;
    }

    .nav-item {
        padding: 0.875rem 1rem;
    }

    .nav-arrow {
        opacity: 1;
        transform: translateX(0);
    }

    .main-container {
        padding: 2.5rem 1.5rem;
    }

    .subcategories-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0 2.5rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .main-container {
        padding: 2rem 1rem;
    }

    .layout-grid {
        gap: 2rem;
    }

    .category-nav {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .categories-title {
        font-size: 1.5rem;
    }

    .subcategories-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.75rem;
    }

    .category-section {
        margin-bottom: 3rem;
    }

    .category-header {
        margin-bottom: 1.5rem;
        padding-bottom: 1.25rem;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
    }

    .sidebar-sticky {
        padding: 1.25rem;
    }

    .category-nav {
        grid-template-columns: 1fr;
        gap: 0.375rem;
    }

    .nav-item {
        padding: 0.75rem 1rem;
    }

    .subcategories-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .subcategory-card {
        padding: 1rem 1.25rem;
    }

    .category-icon-img,
    .category-icon-placeholder {
        width: 48px;
        height: 48px;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 2.5rem 0 2rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .main-container {
        padding: 1.5rem 0.75rem;
    }

    .sidebar-sticky {
        padding: 1rem;
        border-radius: 8px;
    }

    .sidebar-title {
        font-size: 1.125rem;
    }

    .category-header-content {
        gap: 1rem;
    }

    .category-icon-img,
    .category-icon-placeholder {
        width: 44px;
        height: 44px;
    }

    .categories-title {
        font-size: 1.375rem;
    }

    .subcategory-card {
        padding: 0.875rem 1rem;
    }

    .subcategory-icon {
        width: 36px;
        height: 36px;
        font-size: 1.125rem;
    }

    .subcategory-title {
        font-size: 0.875rem;
    }

    .category-section {
        margin-bottom: 2.5rem;
    }
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .nav-icon-img,
    .nav-icon-placeholder {
        width: 28px;
        height: 28px;
    }

    .nav-title {
        font-size: 0.875rem;
    }

    .category-icon-img,
    .category-icon-placeholder {
        width: 40px;
        height: 40px;
    }

    .categories-title {
        font-size: 1.25rem;
    }
}