/* css/catalog.css */

/* ── 페이지 기본 ── */
.catalog-page {
    min-height: 100vh;
    background: var(--bg-primary, #0f0f10);
    color: var(--text-primary, #f5f5f5);
    font-family: var(--font-main, 'Pretendard', 'Apple SD Gothic Neo', sans-serif);
    padding-bottom: 60px;
  }
  
  /* ── 헤더 ── */
  .catalog-header {
    text-align: center;
    padding: 48px 24px 24px;
  }
  
  .catalog-title {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--text-primary, #f5f5f5);
  }
  
  .catalog-subtitle {
    font-size: 15px;
    color: var(--text-secondary, #a0a0a0);
    margin: 0;
  }
  
  /* ── 검색 + 필터 툴바 ── */
  .catalog-toolbar {
    max-width: 900px;
    margin: 0 auto 32px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  
  .catalog-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
  }
  
  .search-icon {
    position: absolute;
    left: 14px;
    font-size: 15px;
    pointer-events: none;
  }
  
  .catalog-search {
    width: 100%;
    padding: 12px 16px 12px 40px;
    background: var(--bg-card, #1c1c1e);
    border: 1px solid var(--border, #2c2c2e);
    border-radius: 12px;
    color: var(--text-primary, #f5f5f5);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
  }
  
  .catalog-search:focus {
    border-color: var(--accent, #3a86ff);
  }
  
  .catalog-search::placeholder {
    color: var(--text-muted, #666);
  }
  
  .catalog-filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }
  
  .filter-btn {
    padding: 7px 16px;
    background: var(--bg-card, #1c1c1e);
    border: 1px solid var(--border, #2c2c2e);
    border-radius: 20px;
    color: var(--text-secondary, #a0a0a0);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
  }
  
  .filter-btn:hover {
    border-color: var(--accent, #3a86ff);
    color: var(--accent, #3a86ff);
  }
  
  .filter-btn.active {
    background: var(--accent, #3a86ff);
    border-color: var(--accent, #3a86ff);
    color: #fff;
    font-weight: 600;
  }
  
  /* ── 로딩 ── */
  .catalog-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary, #a0a0a0);
  }
  
  .loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border, #2c2c2e);
    border-top-color: var(--accent, #3a86ff);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
  }
  
  @keyframes spin {
    to { transform: rotate(360deg); }
  }
  
  /* ── 그리드 ── */
  .catalog-grid {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
  }
  
  /* ── 카드 ── */
  .course-card {
    background: var(--bg-card, #1c1c1e);
    border: 1px solid var(--border, #2c2c2e);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
  }
  
  .course-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent, #3a86ff);
    box-shadow: 0 8px 24px rgba(58, 134, 255, 0.12);
  }
  
  /* 카드 상단: 썸네일 이모지 */
  .course-card-thumb {
    font-size: 36px;
    line-height: 1;
  }
  
  /* 카드 제목 */
  .course-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary, #f5f5f5);
    line-height: 1.4;
    margin: 0;
  }
  
  /* 카드 목표 설명 */
  .course-card-goal {
    font-size: 13px;
    color: var(--text-secondary, #a0a0a0);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;           /* ← 표준 속성 추가 */
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  /* 카드 메타 정보 (난이도, 시간) */
  .course-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }
  
  .course-card-duration {
    font-size: 12px;
    color: var(--text-muted, #666);
  }
  
  .difficulty-badge {
    font-size: 11px;
    padding: 3px 9px;
    border-radius: 10px;
    font-weight: 600;
  }
  
  .difficulty-1 {
    background: rgba(52, 199, 89, 0.15);
    color: #34c759;
  }
  
  .difficulty-2 {
    background: rgba(255, 159, 10, 0.15);
    color: #ff9f0a;
  }
  
  .difficulty-3 {
    background: rgba(255, 69, 58, 0.15);
    color: #ff453a;
  }
  
  /* 태그 목록 */
  .course-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }
  
  .course-tag {
    font-size: 11px;
    padding: 3px 8px;
    background: var(--bg-secondary, #2c2c2e);
    border-radius: 6px;
    color: var(--text-secondary, #a0a0a0);
  }
  
  /* 진행률 바 */
  .course-progress-wrap {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  
  .course-progress-bar-bg {
    height: 4px;
    background: var(--bg-secondary, #2c2c2e);
    border-radius: 2px;
    overflow: hidden;
  }
  
  .course-progress-bar-fill {
    height: 100%;
    background: var(--accent, #3a86ff);
    border-radius: 2px;
    transition: width 0.4s ease;
  }
  
  .course-progress-text {
    font-size: 11px;
    color: var(--text-muted, #666);
  }
  
  /* 시작 버튼 */
  .course-start-btn {
    margin-top: auto;
    padding: 11px 0;
    background: var(--accent, #3a86ff);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
    text-align: center;
    text-decoration: none;
    display: block;
  }
  
  .course-start-btn:hover {
    background: #2a76ef;
  }
  
  .course-start-btn.continue {
    background: #34c759;
  }
  
  .course-start-btn.continue:hover {
    background: #28a745;
  }
  
  .course-start-btn.review {
    background: transparent;
    border: 1px solid var(--accent, #3a86ff);
    color: var(--accent, #3a86ff);
  }
  
  .course-start-btn.review:hover {
    background: rgba(58, 134, 255, 0.1);
  }
  
  /* ── 검색 결과 없음 ── */
  .catalog-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary, #a0a0a0);
    font-size: 15px;
  }
  
  /* ── 반응형 ── */
  @media (max-width: 600px) {
    .catalog-title { font-size: 22px; }
    .catalog-grid  { grid-template-columns: 1fr; }
    .catalog-toolbar { padding: 0 16px; }
  }