/* 포트폴리오 컨테이너 */
.portfolio-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 그리드 레이아웃 - 항상 2개씩 */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* 포트폴리오 아이템 */
.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease;
}

.portfolio-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* portfolio-grid-2 전용 스타일 - 이미지만 표시 */
.portfolio-grid-2-item {
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.portfolio-grid-2-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.portfolio-grid-2-item .portfolio-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.portfolio-grid-2-item .portfolio-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.portfolio-grid-2-item:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-grid-2-item .portfolio-no-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 16px;
    font-weight: 500;
}

/* portfolio-grid-2에서는 텍스트 정보 숨기기 */
.portfolio-grid-2-item .portfolio-info {
    display: none;
}

/* 카테고리가 지정된 portfolio-grid-2 전용 스타일 - 직사각형 레이아웃 */
.portfolio-grid-2-category-item {
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.portfolio-grid-2-category-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.portfolio-grid-2-category-item .portfolio-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9; /* 직사각형 비율 */
    overflow: hidden;
}

.portfolio-grid-2-category-item .portfolio-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.portfolio-grid-2-category-item:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-grid-2-category-item .portfolio-no-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 16px;
    font-weight: 500;
}

/* 카테고리가 지정된 portfolio-grid-2에서는 텍스트 정보 표시 */
.portfolio-grid-2-category-item .portfolio-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 15px;
    background: white;
    min-height: 60px;
}

.portfolio-grid-2-category-item .portfolio-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 6px 0;
    line-height: 1.3;
    color: #333;
}

.portfolio-grid-2-category-item .portfolio-subtitle {
    font-size: 14px;
    margin: 0;
    color: #666;
    line-height: 1.4;
}

.portfolio-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

.portfolio-no-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 14px;
    font-weight: 500;
}

/* 텍스트 정보 - 이미지 하단에 항상 표시 */
.portfolio-info {
    padding: 15px;
    background: white;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 내용이 없을 때 최소 높이 유지 */
.portfolio-info:empty {
    min-height: 40px;
}

.portfolio-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 6px 0;
    line-height: 1.3;
    color: #333;
}

.portfolio-subtitle {
    font-size: 14px;
    margin: 0;
    color: #666;
    line-height: 1.4;
}

.portfolio-category {
    font-size: 12px;
    color: #999;
    margin-top: 8px;
    font-weight: 500;
}

/* 오버레이 스타일 - 기본적으로 숨김 */
.portfolio-overlay {
    display: none;
}

.portfolio-overlay-content {
    display: none;
}

/* 결과 없음 */
.portfolio-no-results {
    text-align: center;
    padding: 60px 20px;
    color: #666;
    font-size: 16px;
    grid-column: 1 / -1;
}

/* 모달 */
.portfolio-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    overflow: hidden;
}

.portfolio-modal.active {
    display: block;
}

.portfolio-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.portfolio-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
}

.portfolio-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    backdrop-filter: blur(10px);
}

.portfolio-modal-close:hover {
    background: rgba(0, 0, 0, 0.7);
}

.portfolio-modal-prev,
.portfolio-modal-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.portfolio-modal-prev {
    left: 15px;
}

.portfolio-modal-next {
    right: 15px;
}

.portfolio-modal-prev:hover,
.portfolio-modal-next:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: translateY(-50%) scale(1.1);
}

.portfolio-modal-body {
    display: flex;
    flex: 1;
    min-height: 0;
}

.portfolio-modal-image {
    flex: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background: #f8f9fa;
    min-height: 400px;
    max-height: 70vh;
    overflow-y: auto;
    position: relative;
    padding: 20px;
}

/* 커스텀 스크롤바 */
.portfolio-modal-image::-webkit-scrollbar {
    width: 8px;
}

.portfolio-modal-image::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.portfolio-modal-image::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.portfolio-modal-image::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}

.portfolio-modal-image img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.portfolio-modal-info {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 300px;
}

.portfolio-modal-info h2 {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 12px 0;
    color: #333;
}

.portfolio-modal-info p {
    font-size: 16px;
    color: #666;
    margin: 0 0 16px 0;
    line-height: 1.5;
}

.portfolio-modal-info #portfolio-modal-category {
    font-size: 14px;
    background: #f0f0f0;
    color: #666;
    padding: 6px 16px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 20px;
    font-weight: 500;
}

.portfolio-modal-info #portfolio-modal-description {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
}

.portfolio-modal-thumbnails {
    display: flex;
    gap: 10px;
    padding: 15px 20px;
    background: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    overflow-x: auto;
}

.portfolio-modal-thumbnail {
    width: 60px;
    height: 45px;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.3s ease;
    flex-shrink: 0;
}

.portfolio-modal-thumbnail.active {
    border-color: #333;
}

.portfolio-modal-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-modal-fullview-btn {
    position: absolute;
    top: 10px;
    right: 60px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 11px;
    cursor: pointer;
    z-index: 10002;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.portfolio-modal-fullview-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.05);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .portfolio-container {
        padding: 15px;
    }
    
    .portfolio-grid {
        gap: 15px;
        grid-template-columns: 1fr;
    }
    
    .portfolio-info {
        padding: 12px;
    }
    
    .portfolio-title {
        font-size: 15px;
    }
    
    .portfolio-subtitle {
        font-size: 13px;
    }
    
    /* 카테고리 지정된 portfolio-grid-2 반응형 */
    .portfolio-grid-2-category-item .portfolio-info {
        padding: 12px;
    }
    
    .portfolio-grid-2-category-item .portfolio-title {
        font-size: 15px;
    }
    
    .portfolio-grid-2-category-item .portfolio-subtitle {
        font-size: 13px;
    }
    
    /* 모달 반응형 */
    .portfolio-modal-content {
        max-width: 95vw;
        max-height: 95vh;
        flex-direction: column;
    }
    
    .portfolio-modal-body {
        flex-direction: column;
    }
    
    .portfolio-modal-image {
        flex: none;
        min-height: 250px;
        max-height: 50vh;
        padding: 15px;
    }
    
    .portfolio-modal-info {
        min-width: auto;
        padding: 20px;
    }
    
    .portfolio-modal-info h2 {
        font-size: 20px;
    }
    
    .portfolio-modal-prev,
    .portfolio-modal-next {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .portfolio-modal-close {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
    
    .portfolio-modal-fullview-btn {
        top: 10px;
        right: 10px;
        padding: 6px 12px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .portfolio-container {
        padding: 10px;
    }
    
    .portfolio-grid {
        gap: 12px;
    }
    
    .portfolio-info {
        padding: 10px;
    }
    
    .portfolio-title {
        font-size: 14px;
    }
    
    .portfolio-subtitle {
        font-size: 12px;
    }
    
    .portfolio-category {
        font-size: 11px;
        margin-top: 6px;
    }
    
    /* 카테고리 지정된 portfolio-grid-2 모바일 반응형 */
    .portfolio-grid-2-category-item .portfolio-info {
        padding: 10px;
    }
    
    .portfolio-grid-2-category-item .portfolio-title {
        font-size: 14px;
    }
    
    .portfolio-grid-2-category-item .portfolio-subtitle {
        font-size: 12px;
    }
    
    .portfolio-modal-info {
        padding: 15px;
    }
    
    .portfolio-modal-info h2 {
        font-size: 18px;
    }
    
    .portfolio-modal-thumbnails {
        padding: 10px 15px;
    }
    
    .portfolio-modal-thumbnail {
        width: 50px;
        height: 38px;
    }
}

/* 로딩 애니메이션 */
.portfolio-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    grid-column: 1 / -1;
}

.portfolio-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #333;
    border-radius: 50%;
    animation: portfolio-spin 1s linear infinite;
}

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

/* 접근성 개선 */
.portfolio-item:focus,
.portfolio-modal-close:focus,
.portfolio-modal-prev:focus,
.portfolio-modal-next:focus {
    outline: 2px solid #0073aa;
    outline-offset: 2px;
}

/* 다크 모드 지원 */
@media (prefers-color-scheme: dark) {
    .portfolio-item {
        background: #2d2d2d;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    .portfolio-info {
        background: #2d2d2d;
    }
    
    .portfolio-title {
        color: #e0e0e0;
    }
    
    .portfolio-subtitle {
        color: #bbb;
    }
    
    .portfolio-category {
        color: #999;
    }
    
    /* 카테고리 지정된 portfolio-grid-2 다크 모드 */
    .portfolio-grid-2-category-item {
        background: #2d2d2d;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    .portfolio-grid-2-category-item .portfolio-info {
        background: #2d2d2d;
    }
    
    .portfolio-grid-2-category-item .portfolio-title {
        color: #e0e0e0;
    }
    
    .portfolio-grid-2-category-item .portfolio-subtitle {
        color: #bbb;
    }
    
    .portfolio-modal-content {
        background: #1a1a1a;
        color: #e0e0e0;
    }
    
    .portfolio-modal-info {
        background: #1a1a1a;
    }
    
    .portfolio-modal-info h2 {
        color: #e0e0e0;
    }
    
    .portfolio-modal-thumbnails {
        background: #2d2d2d;
        border-color: #555;
    }
    
    .portfolio-no-image {
        background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
        color: #999;
    }
}

/* 모달 정보 섹션에서 빈 요소들 숨기기 */
.portfolio-modal-info h2:empty,
.portfolio-modal-info p:empty,
.portfolio-modal-info div:empty {
    display: none;
}

/* 모달 정보 섹션 간격 조정 */
.portfolio-modal-info > *:not(:last-child) {
    margin-bottom: 12px;
}