/* -- Literature container (borrows from product-list layout) --------------- */

.lit-container {
    display: flex;
    flex-direction: column;
    padding: 20px;
}

/* -- Sidebar filters ------------------------------------------------------- */

.lit-container .list-filter {
    margin-bottom: 20px;
}

#btn_toggle_filters {
    display: block;
    width: 100%;
    padding: 10px;
    background: var(--color-bg-black-10, #f0f0f0);
    border: 1px solid var(--color-gray, #ccc);
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.85em;
    cursor: pointer;
    text-align: left;
}

#btn_toggle_filters::after {
    content: '\25BC';
    float: right;
    transition: transform 0.2s ease;
}

#btn_toggle_filters.open::after {
    transform: rotate(180deg);
}

#filters.collapsed {
    display: none;
}

.filter-header.collapsible {
    cursor: pointer;
    user-select: none;
}

.filter-header.collapsible::after {
    content: '\25B8';
    float: right;
    transition: transform 0.15s ease;
}

.filter-header.collapsible.open::after {
    transform: rotate(90deg);
}

.filter-group.collapsed {
    display: none !important;
}

.lit-container .list-filter h4 {
    border-bottom: 1px solid #ccc;
    padding: 5px 0;
    font-size: 1em;
    font-weight: bold;
    text-transform: uppercase;
}

.lit-container .list-filter section {
    margin-bottom: 20px;
}

.lit-container .filter-group {
    display: flex;
    flex-direction: column;
    max-height: 250px;
    overflow-y: auto;
}

.lit-container .filter-group label {
    padding: 3px 0;
    cursor: pointer;
    font-size: 0.95em;
}

.lit-container .filter-group label small {
    font-size: 0.8em;
    color: #888;
}

/* -- Toolbar (search + count) ---------------------------------------------- */

.lit-toolbar {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.lit-search-wrap {
    flex: 1;
    min-width: 200px;
}

.lit-search {
    width: 100%;
    max-width: 360px;
    padding: 8px 12px;
    font-size: 0.95em;
    border: 1px solid var(--color-gray, #ccc);
    border-radius: 4px;
    outline: none;
    transition: border-color 0.2s ease;
}

.lit-search:focus {
    border-color: var(--color-theme-blue, #3385bd);
}

.lit-count {
    font-size: 0.9em;
    color: var(--color-text-gray, #888);
    white-space: nowrap;
}

/* -- Literature grid -------------------------------------------------------- */

.lit-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.lit-card {
    display: flex;
    gap: 16px;
    padding: 16px;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    transition: box-shadow 0.2s ease;
}

.lit-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Thumbnail */
.lit-thumb {
    width: 120px;
    min-width: 120px;
    aspect-ratio: 85 / 110;
    overflow: hidden;
    border-radius: 4px;
    background: #f5f5f5;
}

.lit-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Info */
.lit-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.lit-title {
    font-weight: 700;
    font-size: 1em;
    margin-bottom: 4px;
}

.lit-meta {
    font-size: 0.8em;
    color: var(--color-text-gray, #888);
    margin-bottom: 10px;
}

.lit-dl-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--color-theme-blue, #3385bd);
    color: #fff;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease;
    align-self: flex-start;
}

.lit-dl-btn:hover {
    background: #2a6fa0;
    color: #fff;
}

/* -- No results ------------------------------------------------------------ */

.lit-no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-gray, #888);
    font-size: 1em;
}

/* -- Desktop layout -------------------------------------------------------- */

@media only screen and (min-width: 576px) {
    .lit-container {
        flex-direction: row;
        padding: 35px;
    }

    .lit-container .list-filter {
        width: 260px;
        min-width: 260px;
        padding-right: 30px;
        border-right: 2px solid var(--color-bg-black-30, #ddd);
        margin-bottom: 0;
    }

    #btn_toggle_filters {
        display: none;
    }

    #filters.collapsed {
        display: block;
    }

    .filter-header.collapsible::after {
        display: none;
    }

    .filter-group.collapsed {
        display: flex !important;
    }

    .lit-container .list-products {
        flex: 1;
        padding-left: 30px;
    }

    .lit-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    }
}

/* -- Mobile card adjustments ----------------------------------------------- */

@media only screen and (max-width: 575px) {
    .lit-thumb {
        width: 80px;
        min-width: 80px;
    }

    .lit-dl-btn span {
        display: none;
    }
}