/* Alibaba-style category drawer */
.category-drawer {
    position: fixed;
    inset: 0;
    z-index: 200;
}

.category-drawer[hidden] {
    display: none;
}

.category-drawer.is-open {
    display: block;
}

.category-drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.category-drawer.is-visible .category-drawer-backdrop {
    opacity: 1;
}

.category-drawer-panel {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(100vw, 860px);
    background: var(--color-surface);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-drawer.is-visible .category-drawer-panel {
    transform: translateX(0);
}

.category-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    background: var(--color-surface);
}

.category-drawer-header h2 {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.category-drawer-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.category-drawer-close:hover {
    background: var(--color-bg-muted);
    color: var(--color-text);
}

.category-drawer-body {
    flex: 1;
    min-height: 0;
    display: grid;
    grid-template-columns: 220px 1fr;
    overflow: hidden;
}

.category-drawer-sidebar {
    border-right: 1px solid var(--color-border);
    background: #fafafa;
    overflow-y: auto;
}

.category-drawer-parents {
    list-style: none;
    margin: 0;
    padding: 0.35rem 0;
}

.category-drawer-parent {
    margin: 0;
}

.category-drawer-parent-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.8rem 1rem;
    border: none;
    background: transparent;
    color: var(--color-text);
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.category-drawer-parent-btn:hover,
.category-drawer-parent.is-active .category-drawer-parent-btn {
    background: var(--color-surface);
    color: var(--color-text);
    font-weight: 600;
}

.category-drawer-parent.is-active .category-drawer-parent-btn {
    box-shadow: inset 3px 0 0 var(--color-primary);
}

.category-drawer-parent-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--color-bg-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

.category-drawer-parent-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-drawer-content {
    overflow-y: auto;
    padding: 1.25rem 1.5rem 2rem;
    background: var(--color-surface);
}

.category-drawer-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
}

.category-drawer-section-header h3 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.category-drawer-browse-all {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    white-space: nowrap;
}

.category-drawer-browse-all:hover {
    text-decoration: underline;
}

.category-drawer-group {
    margin-bottom: 1.75rem;
}

.category-drawer-group-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.875rem;
}

.category-drawer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    gap: 0.75rem 0.5rem;
}

.category-drawer-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.25rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text-secondary);
    transition: background 0.15s, color 0.15s;
}

.category-drawer-tile:hover {
    background: var(--color-bg-subtle);
    color: var(--color-primary);
}

.category-drawer-tile-img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--color-bg-muted);
    border: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
}

.category-drawer-tile-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-drawer-tile-label {
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.35;
    text-align: center;
    max-width: 96px;
}

.category-drawer-view-all .category-drawer-tile-img {
    background: var(--color-bg-subtle);
    border-style: dashed;
}

.category-drawer-empty {
    padding: 3rem 1rem;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

body.category-drawer-open {
    overflow: hidden;
}

.nav-text-btn {
    color: var(--color-text-secondary);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
}

.nav-text-btn:hover {
    color: var(--color-text);
    background: var(--color-bg-muted);
}

/* Landing categories preview */
.categories-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.category-preview-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1.125rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.category-preview-card:hover {
    border-color: #cbd5e1;
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.category-preview-card svg {
    flex-shrink: 0;
    color: var(--color-text-muted);
}

.categories-open-btn {
    margin-top: 1.75rem;
}

@media (max-width: 720px) {
    .categories-open-btn {
        margin-top: 1.25rem;
    }

    .category-drawer-panel {
        width: 100vw;
    }

    .category-drawer-body {
        grid-template-columns: 148px 1fr;
    }

    .category-drawer-parent-btn {
        padding: 0.75rem 0.65rem;
        font-size: 0.8125rem;
        gap: 0.5rem;
    }

    .category-drawer-parent-icon {
        width: 24px;
        height: 24px;
    }

    .category-drawer-content {
        padding: 1rem 0.875rem 1.5rem;
    }

    .category-drawer-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }

    .category-drawer-tile-img {
        width: 60px;
        height: 60px;
    }
}