/**
 * SAW LMS - Catalog Styles
 * Clean Minimal Design
 */

/* ================================
   CATALOG LAYOUT
   ================================ */
.saw-catalog {
    padding: 0;
}

/* Minimal Header */
.saw-catalog__header {
    padding: var(--saw-space-8) 0;
    margin-bottom: var(--saw-space-6);
    border-bottom: 1px solid var(--saw-border);
}

.saw-catalog__header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--saw-space-6);
    flex-wrap: wrap;
}

.saw-catalog__header-text {
    flex: 1;
    min-width: 200px;
}

.saw-catalog__title {
    font-size: var(--saw-text-3xl);
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.02em;
}

.saw-catalog__subtitle {
    font-size: var(--saw-text-sm);
    color: var(--saw-text-tertiary);
    margin: var(--saw-space-1) 0 0;
}

/* Search */
.saw-catalog__search {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--saw-bg-alt);
    border: 1px solid var(--saw-border);
    border-radius: var(--saw-radius-full);
    overflow: hidden;
    transition: border-color 0.2s;
}

.saw-catalog__search:focus-within {
    border-color: var(--saw-primary);
}

.saw-catalog__search-input {
    flex: 1;
    padding: 10px 16px;
    font-size: var(--saw-text-sm);
    border: none;
    background: transparent;
    min-width: 200px;
}

.saw-catalog__search-input:focus {
    outline: none;
}

.saw-catalog__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--saw-text-tertiary);
    cursor: pointer;
    transition: color 0.2s;
}

.saw-catalog__search-btn:hover {
    color: var(--saw-primary);
}

/* Content Layout */
.saw-catalog__content {
    display: grid;
    gap: var(--saw-space-8);
}

@media (min-width: 1024px) {
    .saw-catalog__content {
        grid-template-columns: 260px 1fr;
        gap: var(--saw-space-10);
    }
}

/* ================================
   SIDEBAR FILTERS
   ================================ */
.saw-catalog__sidebar {
    display: none;
}

@media (min-width: 1024px) {
    .saw-catalog__sidebar {
        display: block;
    }
}

.saw-filter-section {
    margin-bottom: var(--saw-space-6);
    padding-bottom: var(--saw-space-6);
    border-bottom: 1px solid var(--saw-border);
}

.saw-filter-section:last-of-type {
    border-bottom: none;
}

.saw-filter-section__title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--saw-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 var(--saw-space-3);
}

/* Collapsible Categories */
.saw-filter-category {
    margin-bottom: 2px;
}

.saw-filter-category__header {
    display: flex;
    align-items: center;
}

.saw-filter-category__link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: var(--saw-text-sm);
    color: var(--saw-text-secondary);
    text-decoration: none;
    border-radius: var(--saw-radius);
    transition: all 0.15s;
}

.saw-filter-category__link:hover {
    background: var(--saw-bg-alt);
    color: var(--saw-text);
}

.saw-filter-category__link.is-active {
    background: var(--saw-primary-subtle);
    color: var(--saw-primary);
    font-weight: 500;
}

.saw-filter-category__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    color: var(--saw-text-tertiary);
    cursor: pointer;
    border-radius: var(--saw-radius);
    transition: all 0.2s;
}

.saw-filter-category__toggle:hover {
    background: var(--saw-bg-alt);
    color: var(--saw-text);
}

.saw-filter-category__toggle svg {
    transition: transform 0.2s;
}

.saw-filter-category.is-open .saw-filter-category__toggle svg {
    transform: rotate(180deg);
}

.saw-filter-category__children {
    display: none;
    padding-left: var(--saw-space-4);
    margin-top: 2px;
}

.saw-filter-category.is-open .saw-filter-category__children {
    display: block;
}

.saw-filter-category__child {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    font-size: 0.8125rem;
    color: var(--saw-text-tertiary);
    text-decoration: none;
    border-radius: var(--saw-radius);
    transition: all 0.15s;
}

.saw-filter-category__child:hover {
    background: var(--saw-bg-alt);
    color: var(--saw-text);
}

.saw-filter-category__child.is-active {
    color: var(--saw-primary);
    font-weight: 500;
}

.saw-filter-count {
    font-size: 0.7rem;
    color: var(--saw-text-tertiary);
    background: var(--saw-bg-alt);
    padding: 2px 6px;
    border-radius: var(--saw-radius-full);
}

/* Difficulty Badges */
.saw-difficulty-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.saw-difficulty-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--saw-radius-full);
    transition: all 0.2s;
}

.saw-difficulty-badge--beginner,
.saw-difficulty-badge--začátečník {
    background: #d1fae5;
    color: #047857;
}

.saw-difficulty-badge--beginner:hover,
.saw-difficulty-badge--začátečník:hover {
    background: #a7f3d0;
}

.saw-difficulty-badge--intermediate,
.saw-difficulty-badge--pokročilý {
    background: #fef3c7;
    color: #b45309;
}

.saw-difficulty-badge--intermediate:hover,
.saw-difficulty-badge--pokročilý:hover {
    background: #fde68a;
}

.saw-difficulty-badge--advanced,
.saw-difficulty-badge--expert {
    background: #fee2e2;
    color: #dc2626;
}

.saw-difficulty-badge--advanced:hover,
.saw-difficulty-badge--expert:hover {
    background: #fecaca;
}

.saw-difficulty-badge.is-active {
    outline: 2px solid currentColor;
    outline-offset: 1px;
}

/* Price Filter */
.saw-price-filter {
    display: flex;
    flex-direction: column;
    gap: var(--saw-space-3);
}

.saw-price-filter__inputs {
    display: flex;
    align-items: center;
    gap: var(--saw-space-2);
}

.saw-price-filter__input {
    flex: 1;
    padding: 8px 10px;
    font-size: var(--saw-text-sm);
    border: 1px solid var(--saw-border);
    border-radius: var(--saw-radius);
    background: var(--saw-surface);
    text-align: center;
    min-width: 0;
}

.saw-price-filter__input:focus {
    outline: none;
    border-color: var(--saw-primary);
}

.saw-price-filter__sep {
    color: var(--saw-text-tertiary);
}

.saw-price-filter__unit {
    font-size: var(--saw-text-sm);
    color: var(--saw-text-tertiary);
}

.saw-price-filter__slider {
    width: 100%;
    height: 4px;
    appearance: none;
    background: var(--saw-bg-alt);
    border-radius: 2px;
    cursor: pointer;
}

.saw-price-filter__slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--saw-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

.saw-price-filter__slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.saw-price-filter__range {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--saw-text-tertiary);
}

/* Filter Tags */
.saw-filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.saw-filter-tag {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    color: var(--saw-text-secondary);
    background: var(--saw-bg-alt);
    border-radius: var(--saw-radius-full);
    text-decoration: none;
    transition: all 0.15s;
}

.saw-filter-tag:hover {
    background: var(--saw-primary-subtle);
    color: var(--saw-primary);
}

.saw-filter-tag.is-active {
    background: var(--saw-primary);
    color: white;
}

/* Filter List */
.saw-filter-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.saw-filter-list__item {
    display: block;
    padding: 8px 12px;
    font-size: var(--saw-text-sm);
    color: var(--saw-text-secondary);
    text-decoration: none;
    border-radius: var(--saw-radius);
    transition: all 0.15s;
}

.saw-filter-list__item:hover {
    background: var(--saw-bg-alt);
    color: var(--saw-text);
}

.saw-filter-list__item.is-active {
    background: var(--saw-primary-subtle);
    color: var(--saw-primary);
    font-weight: 500;
}

/* Mobile Sidebar */
@media (max-width: 1023px) {
    .saw-catalog__sidebar {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 300px;
        max-width: 85vw;
        background: var(--saw-surface);
        z-index: 1000;
        padding: var(--saw-space-6);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    }

    .saw-catalog__sidebar.is-open {
        display: block;
        transform: translateX(0);
    }

    body.saw-filters-open::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
}

/* ================================
   MAIN CONTENT
   ================================ */
.saw-catalog__main {
    min-width: 0;
}

/* Toolbar */
.saw-catalog__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--saw-space-4);
}

.saw-catalog__count {
    font-size: var(--saw-text-sm);
    color: var(--saw-text-tertiary);
}

.saw-catalog__count strong {
    color: var(--saw-text);
}

.saw-catalog__filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: var(--saw-text-sm);
    font-weight: 500;
    color: var(--saw-text-secondary);
    background: var(--saw-surface);
    border: 1px solid var(--saw-border);
    border-radius: var(--saw-radius);
    cursor: pointer;
    transition: all 0.15s;
}

.saw-catalog__filter-btn:hover {
    border-color: var(--saw-primary);
    color: var(--saw-primary);
}

@media (min-width: 1024px) {
    .saw-catalog__filter-btn {
        display: none;
    }
}

/* Active Filters */
.saw-catalog__active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--saw-space-4);
}

.saw-active-filter {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    font-size: 0.8125rem;
    color: var(--saw-primary);
    background: var(--saw-primary-subtle);
    border-radius: var(--saw-radius-full);
    text-decoration: none;
    transition: all 0.15s;
}

.saw-active-filter:hover {
    background: var(--saw-primary);
    color: white;
}

/* ================================
   COURSE GRID
   ================================ */
.saw-catalog__grid {
    display: grid;
    gap: var(--saw-space-5);
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ================================
   COURSE CARD - Compact Modern
   ================================ */
.saw-course-card {
    background: var(--saw-surface);
    border: 1px solid var(--saw-border);
    border-radius: var(--saw-radius-lg);
    overflow: hidden;
    transition: all 0.2s ease;
}

.saw-course-card:hover {
    border-color: var(--saw-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.saw-course-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

.saw-course-card__image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--saw-bg-alt);
}

.saw-course-card__thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.saw-course-card:hover .saw-course-card__thumbnail {
    transform: scale(1.03);
}

.saw-course-card__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--saw-text-tertiary);
}

.saw-course-card__badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 10px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: var(--saw-radius-full);
    backdrop-filter: blur(4px);
}

.saw-course-card__body {
    flex: 1;
    padding: var(--saw-space-4);
}

.saw-course-card__title {
    font-size: var(--saw-text-base);
    font-weight: 600;
    line-height: 1.4;
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saw-course-card__excerpt {
    font-size: 0.8125rem;
    color: var(--saw-text-secondary);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saw-course-card__meta {
    display: flex;
    gap: var(--saw-space-3);
    margin-top: var(--saw-space-3);
}

.saw-course-card__meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--saw-text-tertiary);
}

.saw-course-card__meta-item .saw-icon {
    width: 12px;
    height: 12px;
}

.saw-course-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--saw-space-3) var(--saw-space-4);
    border-top: 1px solid var(--saw-border);
    background: var(--saw-bg);
}

.saw-course-card__price {
    font-size: var(--saw-text-base);
    font-weight: 700;
}

.saw-course-card__price--free {
    color: var(--saw-success);
}

.saw-course-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: white;
    background: var(--saw-primary);
    border-radius: var(--saw-radius);
    transition: background 0.15s;
}

.saw-course-card__cta:hover {
    background: var(--saw-primary-hover);
}

.saw-course-card__cta .saw-icon {
    width: 14px;
    height: 14px;
}

/* ================================
   EMPTY STATE
   ================================ */
.saw-catalog__empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--saw-space-16) var(--saw-space-6);
    color: var(--saw-text-tertiary);
}

.saw-catalog__empty svg {
    margin-bottom: var(--saw-space-4);
    opacity: 0.4;
}

.saw-catalog__empty h3 {
    font-size: var(--saw-text-lg);
    font-weight: 600;
    color: var(--saw-text);
    margin: 0 0 var(--saw-space-2);
}

.saw-catalog__empty p {
    margin: 0 0 var(--saw-space-4);
}

/* ================================
   PAGINATION
   ================================ */
.saw-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: var(--saw-space-8);
    padding-top: var(--saw-space-6);
    border-top: 1px solid var(--saw-border);
}

.saw-pagination__btn,
.saw-pagination__page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    font-size: var(--saw-text-sm);
    color: var(--saw-text-secondary);
    text-decoration: none;
    background: var(--saw-surface);
    border: 1px solid var(--saw-border);
    border-radius: var(--saw-radius);
    transition: all 0.15s;
}

.saw-pagination__btn:hover,
.saw-pagination__page:hover {
    border-color: var(--saw-primary);
    color: var(--saw-primary);
}

.saw-pagination__page.is-current {
    background: var(--saw-primary);
    border-color: var(--saw-primary);
    color: white;
    font-weight: 500;
}

.saw-pagination__pages {
    display: flex;
    gap: 4px;
}

.saw-pagination__dots {
    display: flex;
    align-items: center;
    padding: 0 4px;
    color: var(--saw-text-tertiary);
}

/* ================================
   TAB SWITCHER
   ================================ */
.saw-catalog__tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    margin-bottom: var(--saw-space-6);
    background: var(--saw-bg-alt);
    border-radius: var(--saw-radius-lg);
    width: fit-content;
}

.saw-catalog__tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: var(--saw-text-sm);
    font-weight: 500;
    color: var(--saw-text-secondary);
    text-decoration: none;
    border-radius: var(--saw-radius);
    transition: all 0.2s ease;
}

.saw-catalog__tab:hover {
    color: var(--saw-text);
    background: var(--saw-surface);
}

.saw-catalog__tab.is-active {
    color: var(--saw-primary);
    background: var(--saw-surface);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.saw-catalog__tab svg {
    opacity: 0.7;
}

.saw-catalog__tab.is-active svg {
    opacity: 1;
}

.saw-catalog__tab-count {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: var(--saw-radius-full);
    color: var(--saw-text-tertiary);
}

.saw-catalog__tab.is-active .saw-catalog__tab-count {
    background: var(--saw-primary-subtle);
    color: var(--saw-primary);
}

/* Results Info */
.saw-catalog__results-info {
    display: flex;
    align-items: center;
    gap: var(--saw-space-3);
    margin-bottom: var(--saw-space-4);
    padding: var(--saw-space-3) var(--saw-space-4);
    font-size: var(--saw-text-sm);
    color: var(--saw-text-secondary);
    background: var(--saw-bg-alt);
    border-radius: var(--saw-radius);
}

.saw-catalog__clear-search {
    color: var(--saw-primary);
    text-decoration: none;
    font-weight: 500;
}

.saw-catalog__clear-search:hover {
    text-decoration: underline;
}

/* ================================
   PRODUCT CARD
   ================================ */
.saw-product-card {
    background: var(--saw-surface);
    border: 1px solid var(--saw-border);
    border-radius: var(--saw-radius-lg);
    overflow: hidden;
    transition: all 0.2s ease;
}

.saw-product-card:hover {
    border-color: var(--saw-success);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.12);
    transform: translateY(-2px);
}

.saw-product-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

.saw-product-card__image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
}

.saw-product-card__thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.saw-product-card:hover .saw-product-card__thumbnail {
    transform: scale(1.03);
}

.saw-product-card__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #10b981;
}

.saw-product-card__badge {
    position: absolute;
    top: 10px;
    left: 10px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: #10b981;
    color: white;
    border-radius: var(--saw-radius-full);
}

.saw-product-card__sale {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 10px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    background: #ef4444;
    color: white;
    border-radius: var(--saw-radius-full);
}

.saw-product-card__body {
    flex: 1;
    padding: var(--saw-space-4);
}

.saw-product-card__title {
    font-size: var(--saw-text-base);
    font-weight: 600;
    line-height: 1.4;
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saw-product-card__excerpt {
    font-size: 0.8125rem;
    color: var(--saw-text-secondary);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.saw-product-card__meta {
    display: flex;
    gap: var(--saw-space-3);
    margin-top: var(--saw-space-3);
}

.saw-product-card__meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--saw-success);
}

.saw-product-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--saw-space-3) var(--saw-space-4);
    border-top: 1px solid var(--saw-border);
    background: var(--saw-bg);
}

.saw-product-card__prices {
    display: flex;
    align-items: center;
    gap: var(--saw-space-2);
}

.saw-product-card__price {
    font-size: var(--saw-text-base);
    font-weight: 700;
}

.saw-product-card__price--old {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--saw-text-tertiary);
    text-decoration: line-through;
}

.saw-product-card__price--sale {
    color: #ef4444;
}

.saw-product-card__price--free {
    color: var(--saw-success);
}

.saw-product-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: white;
    background: #10b981;
    border-radius: var(--saw-radius);
    transition: background 0.15s;
}

.saw-product-card__cta:hover {
    background: #059669;
}

/* ================================
   INFINITE SCROLL
   ================================ */
.saw-catalog__loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--saw-space-3);
    padding: var(--saw-space-8) 0;
    color: var(--saw-text-tertiary);
    font-size: var(--saw-text-sm);
}

.saw-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--saw-border);
    border-top-color: var(--saw-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.saw-catalog__end {
    text-align: center;
    padding: var(--saw-space-6) 0;
    color: var(--saw-text-tertiary);
    font-size: var(--saw-text-sm);
}

.saw-catalog__end span {
    display: inline-flex;
    align-items: center;
    gap: var(--saw-space-2);
    padding: var(--saw-space-2) var(--saw-space-4);
    background: var(--saw-bg-alt);
    border-radius: var(--saw-radius-full);
}

/* Grid for mixed content */
.saw-catalog__grid {
    display: grid;
    gap: var(--saw-space-5);
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}