/*
 * ===================================================================
 * 강의 목록, 검색 결과, 공통 페이징 스타일시트
 * -------------------------------------------------------------------
 * 이 파일은 archive-sf_lto_lecture.php와 search.php 템플릿의
 * 모든 시각적 요소를 제어합니다.
 * ===================================================================
 */

/* ==========================================================================
   1. 전체 레이아웃
   ========================================================================== */
.sf-lt-one-content-area-full {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: #fff;
}

/* ==========================================================================
   2. 강의 목록 아이템 (카드 디자인)
   ========================================================================== */
.sf-lt-one-lecture-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem; /* 카드 사이의 간격 */
    margin-bottom: 3rem;
}

.sf-lt-one-lecture-item {
    display: flex;
    gap: 1.5rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    background-color: #fff;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.sf-lt-one-lecture-item:hover {
    border-color: #c0c0c0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-3px);
}

/* 2.1 썸네일 영역 */
.sf-lt-one-lecture-item__thumbnail {
    flex: 0 0 240px;
    width: 240px;
    height: 160px;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
}

.sf-lt-one-lecture-item__thumbnail a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    position: relative;
    text-decoration: none;
}

.sf-lt-one-lecture-item__thumbnail img,
.sf-lt-one-lecture-item__placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.sf-lt-one-lecture-item__placeholder {
    background-color: #fca904;
}

.sf-lt-one-lecture-item__title-overlay {
    position: relative;
    z-index: 2;
    padding: 1rem;
    margin: 0;
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #000;
    text-shadow: -1px -1px 0 #fff, 1px -1px 0 #fff, -1px 1px 0 #fff, 1px 1px 0 #fff, 0 0 8px #fff;
    line-height: 1.3;
}

/* 2.2 콘텐츠 영역 */
.sf-lt-one-lecture-item__content {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
}

.sf-lt-one-lecture-item__excerpt {
    color: #555;
    margin-bottom: 1rem;
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.sf-lt-one-lecture-item__footer {
    font-size: 0.9rem;
    color: #777;
    display: flex;
    align-items: center;
}

.sf-lt-one-footer-separator {
    margin: 0 0.5rem;
}

/* ==========================================================================
   3. 최근 챕터 목록
   ========================================================================== */
.sf-lt-one-recent-chapters {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e5e5;
}

.sf-lt-one-section-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.sf-lt-one-recent-chapters-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sf-lt-one-recent-chapters-list li a {
    display: block;
    padding: 1.5rem 0;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    color: #333;
    border-radius: 4px;
    transition: background-color 0.2s ease-in-out, padding 0.2s ease-in-out;
}

.sf-lt-one-recent-chapters-list li:first-child a {
    border-top: 1px solid #f0f0f0;
}

.sf-lt-one-recent-chapters-list li a:hover {
    background-color: #f9f9f9;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.sf-lt-one-recent-chapter__meta {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 0.5rem;
}

.sf-lt-one-chapter-parent-lecture {
    color: #0073aa;
    font-weight: bold;
}

.sf-lt-one-meta-separator {
    margin: 0 0.5rem;
}

.sf-lt-one-recent-chapter__title {
    font-size: 1.2rem;
    margin: 0 0 0.5rem;
    color: #222;
}

.sf-lt-one-recent-chapters-list li a:hover .sf-lt-one-recent-chapter__title {
    color: #0073aa;
}

.sf-lt-one-recent-chapter__excerpt {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.sf-lt-one-recent-chapter__excerpt p {
    margin: 0;
}


/* ==========================================================================
   4. 검색 결과 페이지
   ========================================================================== */
.search-results .sf-lt-one-page-header {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 998;
    background-color: #fff;
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    margin: -2rem -2rem 0; /* 부모 패딩을 무시하고 꽉 채움 */
    width: calc(100% + 4rem);
}
.sf-lt-one-search-page-form { display: flex; gap: 0.5rem; align-items: center; }
.sf-lt-one-search-page-form__input { flex-grow: 1; padding: 0.75rem; font-size: 1.2rem; border: 2px solid #ddd; border-radius: 4px; transition: border-color 0.2s; }
.sf-lt-one-search-page-form__input:focus { border-color: #0073aa; outline: none; }
.sf-lt-one-search-page-form__button { padding: 0.75rem 1.5rem; font-size: 1.1rem; font-weight: bold; background-color: #0073aa; color: #fff; border: none; border-radius: 4px; cursor: pointer; flex-shrink: 0; }
.sf-lt-one-search-results-list { padding-top: 1.5rem; }
.sf-lt-one-search-result-item { padding: 1.5rem 0; border-bottom: 1px solid #e5e5e5; }
.sf-lt-one-search-result-item:first-child { padding-top: 0; }
.sf-lt-one-search-result-item__header { display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 0.5rem; }
.sf-lt-one-search-result__type { display: inline-block; font-size: 0.8rem; font-weight: bold; padding: 0.2em 0.7em; border-radius: 4px; color: #fff; flex-shrink: 0; margin-top: 0.2em; }
.sf-lt-one-search-result__type.type-sf_lto_lecture { background-color: #0073aa; }
.sf-lt-one-search-result__type.type-sf_lto_chapter { background-color: #fca904; }
.sf-lt-one-search-result__type.type-post { background-color: #4CAF50; }
.sf-lt-one-search-result__type.type-page { background-color: #6c757d; }
.sf-lt-one-search-result-item__title { font-size: 1.3rem; line-height: 1.4; margin: 0; flex-grow: 1; }
.sf-lt-one-search-result-item__title a { text-decoration: none; color: #222; }
.sf-lt-one-search-result-item__title a:hover { color: #0073aa; }
.sf-lt-one-search-result-item__excerpt { color: #555; font-size: 0.95rem; line-height: 1.7; }
.sf-lt-one-search-result-item__excerpt p { margin: 0; }
.search-highlight { background-color: #fff59d; color: #000; font-weight: bold; padding: 0.1em 0.2em; border-radius: 3px; }
.sf-lt-one-no-results { padding: 3rem 1rem; text-align: center; background-color: #f9f9f9; border: 1px dashed #ddd; margin-top: 2rem; }

/* ==========================================================================
   5. 페이징 (Pagination)
   ========================================================================== */
.navigation.pagination { margin-top: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.navigation.pagination .nav-links { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 0.5rem; }
.navigation.pagination .page-numbers { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; font-weight: 600; font-size: 1rem; min-width: 44px; height: 44px; padding: 0 0.5rem; border: 1px solid #ddd; border-radius: 4px; background-color: #fff; color: #555; transition: all 0.2s ease-in-out; }
.navigation.pagination .page-numbers:not(.current):not(.dots):hover, .navigation.pagination .page-numbers:not(.current):not(.dots):focus { border-color: #0073aa; background-color: #f0f8ff; color: #0073aa; transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,0.05); }
.navigation.pagination .page-numbers.current { background-color: #0073aa; border-color: #0073aa; color: #fff; font-weight: bold; cursor: default; }
.navigation.pagination .page-numbers.dots { border: none; background: none; cursor: default; box-shadow: none; }

/* [수정] 검색 결과 및 강의 목록 페이지 상단 여백 제거 */
.search-results .sf-lt-one-content-area-full,
.post-type-archive-sf_lto_lecture .sf-lt-one-content-area-full {
    margin-top: 0;
}

/* ==========================================================================
   6. 반응형 (Responsive)
   ========================================================================== */
@media screen and (max-width: 768px) {
    .sf-lt-one-content-area-full { margin: 0; padding: 1rem; }
    .sf-lt-one-lecture-item { flex-direction: column; gap: 1rem; padding: 1rem; }
    .sf-lt-one-lecture-item__thumbnail { flex-basis: auto; width: 100%; height: auto; aspect-ratio: 240 / 160; }
    .sf-lt-one-lecture-item__excerpt { -webkit-line-clamp: unset; }
    .search-results .sf-lt-one-page-header { width: calc(100% + 2rem); margin: -1rem -1rem 0; }
    .navigation.pagination .nav-links { gap: 0.3rem; }
    .navigation.pagination .page-numbers { min-width: 40px; height: 40px; font-size: 0.9rem; }
}

@media screen and (max-width: 500px) {
    .sf-lt-one-search-result-item__header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .sf-lt-one-search-result__type { margin-top: 0; }
}