/* ========================================
   Gallery 페이지 전용 스타일
   ======================================== */

/* 페이지 헤더 */
.page-header {
    background: var(--gradient-main);
    color: var(--text-white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.page-header h1 {
    font-size: var(--font-5xl);
    margin-bottom: var(--spacing-md);
}

.page-header p {
    font-size: var(--font-xl);
    opacity: 0.95;
}

/* 갤러리 그리드 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.gallery-item {
    position: relative;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.gallery-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover .gallery-img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--text-white);
    padding: var(--spacing-lg);
    font-weight: 500;
    font-size: var(--font-base);
    text-align: center;
    transform: translateY(100%);
    transition: var(--transition);
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

/* 라이트박스 모달 */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    cursor: pointer;
    overflow: hidden;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.lightbox-content {
    max-width: 70vw;
    max-height: 70vh;
    position: relative;
    margin: auto;
    display: block;
}

.lightbox-img {
    width: 100%;
    height: auto;
    max-height: 70vh;
    object-fit: contain;
    display: block;
    border-radius: 8px;
}

.lightbox-caption {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-white);
    font-size: var(--font-lg);
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
}

.lightbox-close {
    position: absolute;
    top: -60px;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    font-size: var(--font-xl);
    cursor: pointer;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    border: 3px solid #fff;
}

.lightbox-close::before {
    content: '✕';
    font-weight: bold;
    font-size: 18px;
}

.lightbox-close:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(255, 136, 0, 0.4);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-white);
    font-size: var(--font-2xl);
    background: rgba(0, 0, 0, 0.5);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-nav:hover {
    background: var(--primary-color);
    color: var(--text-white);
}

.lightbox-prev {
    left: -80px;
}

.lightbox-next {
    right: -80px;
}

/* 갤러리 카테고리 필터 */
.gallery-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: var(--font-sm);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--text-white);
}

/* 로딩 스피너 */
.gallery-loading {
    display: none;
    text-align: center;
    padding: var(--spacing-2xl);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .page-header h1 {
        font-size: var(--font-3xl);
    }
    
    .page-header p {
        font-size: var(--font-base);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .gallery-img {
        height: 200px;
    }
    
    .lightbox-nav {
        font-size: var(--font-xl);
        width: 40px;
        height: 40px;
    }
    
    .lightbox-prev {
        left: -60px;
    }
    
    .lightbox-next {
        right: -60px;
    }
    
    .lightbox-caption {
        font-size: var(--font-base);
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .gallery-img {
        height: 180px;
    }
    
    .lightbox-content {
        max-width: 90vw;
        max-height: 75vh;
    }
    
    .lightbox-nav {
        position: fixed;
        bottom: 20px;
    }
    
    .lightbox-prev {
        left: 20px;
    }
    
    .lightbox-next {
        right: 20px;
    }
    
    .lightbox-close {
        top: 20px;
        right: 20px;
        position: fixed;
    }
    
    .lightbox-caption {
        position: fixed;
        bottom: 80px;
        left: 50%;
        transform: translateX(-50%);
        font-size: var(--font-sm);
    }
    
    .gallery-filters {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        font-size: var(--font-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }
}