/* ========================================
   LIST PAGE STYLES - 教材一覧
   Layout logic + component structure
   No fixed px, use rem/em + CSS variables
   ======================================== */

/* ========================================
   SEARCH BAR
   ======================================== */

.search-bar {
    padding-block: var(--space-lg);
}

.search-bar__form {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    max-width: 15rem;
    margin-left: auto;
}

.search-bar__input {
    flex: 1;
    min-width: 0;
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
}

.search-bar__btn {
    flex-shrink: 0;
    padding: var(--space-sm);
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.search-bar__icon {
    display: block;
    width: 1.375rem;
    height: 1.375rem;
}

/* ========================================
   MATERIAL LIST PAGE LAYOUT
   ======================================== */

.material-list-page {
    padding-block: var(--space-lg);
}

.material-list-page__inner {
    display: flex;
    gap: var(--space-lg);
}

/* Sidebar */
.material-list-page__sidebar {
    flex: 0 0 auto;
    width: 100%;
    max-width: 40rem;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Main Content */
.material-list-page__main {
    flex: 1 1 0%;
    min-width: 0;
}

/* ========================================
   SEARCH / ARCHIVE GRID (tiles)
   ======================================== */

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: clamp(1rem, 2vw, 1.5rem);
}

.post-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.post-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
}

.post-card__figure {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    margin: 0;
    background: var(--color-gray-100);
}

.post-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.post-card__body {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    flex: 1;
}

.post-card__title {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-tight);
    margin: 0;
}

.post-card__title a {
    color: var(--color-text);
}

.post-card__excerpt {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.post-card__link {
    margin-top: auto;
    align-self: flex-start;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

/* ========================================
   FEATURED BLOCKS (最新教材 / 人気教材)
   ======================================== */

.featured-block {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-white);
}

.featured-block__title {
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    text-align: center;
    padding-block: var(--space-sm);
}

.featured-list {
    padding-block-end: var(--space-xs);
    padding: 0 15px;
}

.featured-item {
    border-bottom: 1px solid var(--color-border);
}

.featured-item:last-child {
    border-bottom: none;
}

.featured-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    /* transition: background-color var(--transition-fast); */
}

.featured-link:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

.featured-link__text {
    flex: 1;
    font-size: var(--font-size-base);
}

.featured-link__badge {
    flex-shrink: 0;
    width: 40px;
    height: auto;
}

/* ========================================
   DOWNLOAD SECTION
   ======================================== */

.download-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-white);
}

.download-section__image {
    width: 100%;
    max-width: 250px;
    height: auto;
}

.download-section__link {
    text-align: center;
    font-size: var(--font-size-sm);
    text-decoration: underline;
    color: var(--color-primary);
}

/* ========================================
   MATERIAL LIST BOX
   ======================================== */

.material-list-box {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-white);
}

.material-list-box__title {
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    text-align: center;
    padding-block: var(--space-md);
}

.material-items {
    /* No fixed height - let content flow */
    padding: 0 15px;
}

.material-items__item {
    border-bottom: 1px solid var(--color-border);
}

.material-items__item:last-child {
    border-bottom: none;
}

.material-items__link {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-base);
    /* transition: background-color var(--transition-fast); */
}

.material-items__link:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

/* ========================================
   PAGINATION (for list page)
   Uses vietcf-pagination to avoid Bootstrap conflicts
   ======================================== */

.material-list-box .vietcf-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-gray-200);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    width: 100%;
    margin: 0 auto;
}

.material-list-box .vietcf-pagination__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-sm);
    background: var(--color-gray-600);
    color: var(--color-white);
    /* transition: background-color var(--transition-fast); */
}

.material-list-box .vietcf-pagination__link:hover {
    background: var(--color-gray-700);
    color: var(--color-white)
}

.material-list-box .vietcf-pagination__link--active {
    background: var(--color-white);
    color: var(--color-gray-700);
    font-size: var(--font-size-xl);
}

.material-list-box .vietcf-pagination__link--prev,
.material-list-box .vietcf-pagination__link--next {
    padding: var(--space-xs);
    background: transparent !important;
}

.material-list-box .vietcf-pagination__link img {
    width: 1.875rem;
    height: 1.875rem;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 64rem) {
    .material-list-page__inner {
        flex-direction: column;
    }

    .material-list-page__sidebar {
        max-width: 100%;
    }
}

@media (max-width: 48rem) {
    .search-bar__form {
        max-width: 100%;
    }

    .featured-block__title {
        font-size: var(--font-size-lg);
    }

    .featured-link__text {
        font-size: var(--font-size-base);
    }

    .material-list-box__title {
        font-size: var(--font-size-lg);
    }

    .material-items__link {
        font-size: var(--font-size-base);
        padding: var(--space-sm) var(--space-md);
    }

    .material-list-box .vietcf-pagination {
        gap: var(--space-sm);
    }

    .material-list-box .vietcf-pagination__link {
        font-size: var(--font-size-base);
        padding: var(--space-xs) var(--space-sm);
    }

    .material-list-box .vietcf-pagination__link--active {
        font-size: var(--font-size-lg);
    }
}