/* 기본 스타일 리셋 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --vh: 1vh;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    min-height: calc(var(--vh, 1vh) * 100);
    color: #333;
    line-height: 1.6;
}

/* 헤더 스타일 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 상단 오른쪽 아바타 배지 */
.avatar-badge {
    position: fixed;
    top: 12px;
    right: 16px;
    z-index: 120;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    user-select: none;
}

.avatar-image {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    border: 2px solid rgba(255,255,255,0.85);
    background: #eee;
}

.avatar-name {
    font-size: 0.8rem;
    font-weight: 700;
    color: #333;
    padding: 2px 6px;
    background: rgba(255,255,255,0.85);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

@media (max-width: 768px) {
    .avatar-image { width: 48px; height: 48px; }
}

.nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 25px;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

/* 메인 컨텐츠 */
.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.gallery-container {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

/* 그림 카드 스타일 */
.artwork-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.artwork-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.artwork-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.artwork-card:hover .artwork-image {
    transform: scale(1.05);
}

.artwork-info {
    padding: 1.5rem;
}

.artwork-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.artwork-category {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.artwork-medium {
    color: #666;
    font-size: 0.9rem;
}

/* 모달 스타일 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: 20px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #eee;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
}

.modal-body {
    display: flex;
    max-height: 70vh;
    max-height: calc(var(--vh, 1vh) * 70);
    overflow: hidden;
}

.modal-image-container {
    flex: 1;
    max-width: 60%;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.modal-info {
    flex: 1;
    max-width: 40%;
    padding: 2rem;
    overflow-y: auto;
    background: #f8f9fa;
}

.info-section {
    margin-bottom: 2rem;
}

.info-section h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #667eea;
}

.info-grid {
    display: grid;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.info-label {
    font-weight: 500;
    color: #666;
    min-width: 80px;
}

.info-value {
    font-weight: 600;
    color: #333;
    text-align: right;
}

.modal-description {
    line-height: 1.8;
    color: #555;
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .main {
        padding: 1rem;
    }
    
    .gallery-container {
        padding: 1rem;
    }
    
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .modal-content {
        max-width: 95vw;
        max-height: 95vh;
    }
    
    .modal-body {
        flex-direction: column;
        max-height: 80vh;
    }
    
    .modal-image-container {
        max-width: 100%;
        padding: 1rem;
    }
    
    .modal-info {
        max-width: 100%;
        padding: 1rem;
    }
    
    .nav {
        gap: 0.25rem;
    }
    
    .nav-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .modal-header {
        padding: 1rem;
    }
    
    .modal-title {
        font-size: 1.2rem;
    }
}

/* 모바일 최적화 - 동적 화면 크기 처리 */
@media (max-width: 768px) and (orientation: portrait) {
    .header {
        padding: 0.5rem 0;
    }
    
    .header-content {
        padding: 0 0.5rem;
        gap: 0.5rem;
    }
    
    .logo {
        font-size: 1.8rem;
    }
    
    .nav {
        gap: 0.2rem;
    }
    
    .nav-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
        border-radius: 20px;
    }
    
    .main {
        padding: 0.5rem;
    }
    
    .gallery-container {
        padding: 0.5rem;
        border-radius: 15px;
    }
    
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 0.5rem;
    }
    
    .artwork-card {
        border-radius: 15px;
    }
    
    .artwork-image {
        height: 200px;
    }
    
    .artwork-info {
        padding: 1rem;
    }
    
    .artwork-title {
        font-size: 1rem;
    }
    
    .artwork-category {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
    
    .artwork-medium {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) and (orientation: portrait) {
    .gallery {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .artwork-image {
        height: 180px;
    }
    
    .modal-content {
        max-width: 98vw;
        max-height: 98vh;
        border-radius: 15px;
    }
    
    .modal-header {
        padding: 0.75rem 1rem;
    }
    
    .modal-title {
        font-size: 1.1rem;
    }
    
    .modal-image-container {
        padding: 0.5rem;
    }
    
    .modal-info {
        padding: 0.75rem;
    }
    
    .info-section h3 {
        font-size: 1rem;
    }
    
    .info-item {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .modal-description {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
}

/* 가로 모드 최적화 */
@media (max-width: 768px) and (orientation: landscape) {
    .header {
        padding: 0.3rem 0;
    }
    
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        padding: 0 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .nav {
        gap: 0.3rem;
    }
    
    .nav-btn {
        padding: 0.3rem 0.8rem;
        font-size: 0.7rem;
    }
    
    .main {
        padding: 0.5rem;
    }
    
    .gallery-container {
        padding: 0.5rem;
    }
    
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 0.5rem;
    }
    
    .artwork-image {
        height: 120px;
    }
    
    .artwork-info {
        padding: 0.75rem;
    }
    
    .artwork-title {
        font-size: 0.9rem;
    }
    
    .artwork-category {
        font-size: 0.6rem;
        padding: 0.15rem 0.5rem;
    }
    
    .artwork-medium {
        font-size: 0.7rem;
    }
}

/* 매우 작은 화면 (iPhone SE 등) */
@media (max-width: 375px) {
    .header-content {
        padding: 0 0.3rem;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .nav-btn {
        padding: 0.3rem 0.6rem;
        font-size: 0.65rem;
    }
    
    .main {
        padding: 0.3rem;
    }
    
    .gallery-container {
        padding: 0.3rem;
    }
    
    .gallery {
        gap: 0.3rem;
    }
    
    .artwork-image {
        height: 160px;
    }
    
    .artwork-info {
        padding: 0.75rem;
    }
    
    .artwork-title {
        font-size: 0.9rem;
    }
    
    .modal-content {
        max-width: 99vw;
        max-height: 99vh;
    }
}

/* 큰 화면 모바일 (iPad 등) */
@media (min-width: 769px) and (max-width: 1024px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
    }
    
    .artwork-image {
        height: 220px;
    }
    
    .modal-content {
        max-width: 85vw;
        max-height: 85vh;
    }
}

/* 안전 영역 처리 (iPhone X 이상) */
@supports (padding: max(0px)) {
    .header {
        padding-top: max(1rem, env(safe-area-inset-top));
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
    
    .main {
        padding-left: max(2rem, env(safe-area-inset-left));
        padding-right: max(2rem, env(safe-area-inset-right));
        padding-bottom: max(2rem, env(safe-area-inset-bottom));
    }
    
    @media (max-width: 768px) {
        .main {
            padding-left: max(1rem, env(safe-area-inset-left));
            padding-right: max(1rem, env(safe-area-inset-right));
            padding-bottom: max(1rem, env(safe-area-inset-bottom));
        }
    }
}

/* 로딩 애니메이션 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    font-size: 1.2rem;
    color: #666;
}

/* 빈 상태 스타일 */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: #666;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #ccc;
}

/* 모바일 터치 최적화 */
@media (max-width: 768px) {
    /* 터치 영역 최소화 */
    .nav-btn {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .artwork-card {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    .close-btn {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 스크롤 최적화 */
    .modal-info {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
    
    /* 이미지 터치 최적화 */
    .artwork-image {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        pointer-events: none;
    }
    
    /* 모달 터치 최적화 */
    .modal-content {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
}

/* 모바일에서 더 나은 스크롤 경험 */
@media (max-width: 768px) {
    body {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
    
    .gallery-container {
        -webkit-overflow-scrolling: touch;
    }
}