/* 공통 컴포넌트 스타일 */
.container {
    max-width: 768px;
    margin: 0 auto;
    background: #fff;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

/* 헤더 스타일 */
.header {
    display: flex;
    justify-content: space-between;
    height: 60px;
    padding: 15px 20px;
    position: sticky;
    /* text-align: center; */
    /* border-bottom: 1px solid var(--color-border); */
    /* background: #fff;
    top: 0;
    z-index: 100; */
}

.header img {
    width: auto;
    height: 100%;
}

.back-button {
    position: absolute;
    width: 24px;
    height: 24px;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
}

/* 검색바  */
.search-bar {
    padding: 20px 15px 15px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.8) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.search-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 20px 60px 20px 25px;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 400;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 8px 10px rgba(0, 0, 0, 0.1),
        0 2px 4px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    color: var(--color-text-primary);
}

.search-input::placeholder {
    color: var(--color-text-secondary);
    font-weight: 400;
    opacity: 0.7;
}

.search-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-2px);
}

.search-input:focus::placeholder {
    color: var(--color-primary);
    opacity: 0.8;
}

.search-icon {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.search-icon:hover {
    transform: translateY(-50%) scale(1.05);
}

.search-icon:active {
    transform: translateY(-50%) scale(0.95);
}

.search-icon svg {
    width: 20px;
    height: 20px;
    fill: white;
    transition: all 0.2s ease;
}

.search-container:hover .search-icon svg {
    transform: scale(1.1);
}

@media (max-width: 480px) {
    .search-bar {
        padding: 15px 12px 12px;
    }

    .search-input {
        padding: 18px 55px 18px 20px;
        font-size: 15px;
        border-radius: 25px;
    }

    .search-icon {
        width: 40px;
        height: 40px;
        right: 6px;
    }

    .search-icon svg {
        width: 18px;
        height: 18px;
    }
}

/* 공통 섹션 스타일 */
.section {
    padding-top: 20px;
    /* margin-bottom: 50px; */
}

.section-title-box {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    box-sizing: border-box;
    margin-bottom: 10px;
}


.section-title {
    font-size: 20px;
    font-weight: bold;
    color: var(--color-text-primary);
}

.class-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 10px;
    word-break: keep-all;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


.class-info {
    font-size: 16px;
    color: #787878;
    margin-top: auto;
}


.highlight {
    color: var(--color-primary);
}

@media (max-width: 480px) {
    .section {
        margin-bottom: 25px;
    }
          
    
    .section-title-box {
        padding: 0 18px;
        margin-bottom: 0px;
    }

    .section-title {
        font-size: 18px;
    }

    .class-title {
        font-size: 16px;
        margin-bottom: 8px;
        line-height: 1.3;
    }

    .class-info {
        font-size: 14px;
    }

}
@media (max-width: 380px) {
    .section {
        margin-bottom: 20px;
    }

    .section-title-box {
        padding: 0 15px;
        margin-bottom: 8px;
    }

}



.class-heart {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.class-heart svg {
    width: 18px;
    height: 18px;
    fill: rgba(0,0,0,0.3);
}


.class-heart.active svg {
    fill: var(--color-primary);
}

@media (max-width: 480px) {
    .class-heart {
        width: 28px;
        height: 28px;
    }
}




/* 공통 그리드 레이아웃 스타일 */
.lecture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 0 10px;
    box-sizing: border-box;
    margin-bottom: 30px;
}

.lecture-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: all 0.2s ease;
}

.lecture-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.lecture-image {
    width: 100%;
    /* height: 180px; */
    aspect-ratio: 3/4;
    background: #f0f0f0;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lecture-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lecture-info {
    padding: 15px;
}

.lecture-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
    word-break: keep-all;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lecture-meta {
    font-size: 14px;
    color: var(--color-text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
    gap: 8px;
}

.lecture-category {
    color: var(--color-primary);
    font-weight: 500;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lecture-period {
    color: var(--color-text-secondary);
    flex-shrink: 0;
    /* white-space: nowrap; */
    word-break: keep-all;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lecture-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
}

@media (max-width: 650px) {

    .lecture-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 580px) {

    /* .lecture-grid {

        grid-template-columns: 1fr;
    } */

    /* .lecture-image {
        height: 200px;
    } */
}

/* 반응형 스타일 */
@media (max-width: 480px) {
    .lecture-grid {
        gap: 15px;
        padding: 0 5px;
    }
    
    /* .lecture-image {
        height: 180px;
    }
     */
    .lecture-info {
        padding: 12px;
    }
    
    .lecture-title {
        font-size: 15px;
    }
    
    .lecture-meta {
        font-size: 13px;
    }
}

@media (max-width: 380px) {
    .lecture-grid {
        gap: 12px;
        padding: 0;
    }
    
    /* .lecture-image {
        height: 140px;
    } */
    
    .lecture-info {
        padding: 10px;
    }
    
    .lecture-title {
        font-size: 14px;
    }
    
    .lecture-meta {
        font-size: 12px;
    }
}

/* 태블릿 최적화 */
/* @media (min-width: 768px) {
    .lecture-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 16px;
    }
    
    .lecture-info {
        padding: 16px;
    }
    
    .lecture-title {
        font-size: 16px;
    }
    
    .lecture-meta {
        font-size: 14px;
    }
    
    .lecture-price {
        font-size: 17px;
    }
} */


/* 푸터 스타일 */
.footer {
    background: var(--color-primary);
    border-top: 1px solid var(--color-footer-border);
    padding: 30px 20px;
    /* margin-top: 40px; */
}

.footer-content {
    width: 100%;
    margin: 0 auto;
    text-align: left;
}

.company-info {
    margin-bottom: 20px;
}

.company-name {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--color-text-secondary);
}

.company-name img {
    width: auto;
    height: 30px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.company-details {
    font-size: 12px;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.company-details div {
    margin-bottom: 3px;
}

.footer-links {
    margin-bottom: 15px;
}

.footer-link {
    color: var(--color-link);
    text-decoration: none;
    font-size: 12px;
}

.footer-link:hover {
    text-decoration: underline;
}

.separator {
    margin: 0 10px;
    color: var(--color-separator);
}

.copyright {
    font-size: 12px;
    color: var(--color-text-muted);
}

.filter-section {
    padding: 12px 16px;
    background: #fff;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 100;
}

.filter-tags {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 4px;
}

.filter-tags::-webkit-scrollbar {
    display: none;
}

.filter-tag {
    padding: 8px 14px;
    background: rgb(247, 247, 247);
    border: 1px solid #ddd;
    border-radius: 20px;
    white-space: nowrap;
    font-size: 14px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: all 0.2s ease;
    text-decoration: none;
    color: var(--color-text-primary);
}

.filter-tag:hover {
    background: #f0f0f0;
    transform: translateY(-1px);
    color: var(--color-text-primary);
}

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

.content {
    padding: 16px;
    max-width: 1024px;
    margin: 0 auto;
}

.lecture-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px 20px 20px;
    margin: 40px 0;
}

.lecture-empty::before {
    content: "📚";
    font-size: 64px;
    margin-bottom: 12px;
    opacity: 0.6;
    display: block;
}

.lecture-empty.class::before {
    content: "📖";
}

.lecture-empty.event::before {
    content: "🎉";
}

.lecture-empty.community::before {
    content: "💬";
}

.lecture-empty-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.lecture-empty-desc {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
    max-width: 300px;
}

@media (max-width: 480px) {

    .content {
        padding: 10px;
    }
    .lecture-empty {
        padding: 0 10px 10px 10px;
        margin: 20px 0;
    }

    .lecture-empty::before {
        font-size: 48px;
    }

    .lecture-empty-title {
        font-size: 18px;
    }

    .lecture-empty-desc {
        font-size: 14px;
    }
}