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

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 헤더 */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* 버튼 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background-color: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #475569;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #d97706;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* 메인 컨텐츠 */
.main-content {
    padding: 2rem 0;
}

/* 통계 섹션 */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.stat-card h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 툴바 */
.toolbar {
    background: var(--card-bg);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sort-controls label {
    font-weight: 600;
    color: var(--text-secondary);
}

.sort-controls select {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: white;
    cursor: pointer;
}

.view-controls {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.view-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.view-btn:hover:not(.active) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 스토리보드 그리드 */
.storyboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.storyboard-grid.list-view {
    grid-template-columns: 1fr;
}

/* 컷 카드 */
.cut-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
}

.cut-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.cut-card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

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

.cut-card-image .cut-number-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 700;
}

.cut-card-content {
    padding: 1.5rem;
}

.cut-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.cut-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.cut-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.cut-card-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cut-card-prompts {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.prompt-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-color);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.prompt-badge i {
    color: var(--primary-color);
}

.cut-card-actions {
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.icon-btn {
    flex: 1;
    padding: 0.5rem;
    border: none;
    background: var(--bg-color);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.icon-btn:hover {
    background: var(--primary-color);
    color: white;
}

.icon-btn.delete:hover {
    background: var(--danger-color);
    color: white;
}

/* 리스트 뷰 스타일 */
.list-view .cut-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    cursor: default;
}

.list-view .cut-card-image {
    height: 100%;
    min-height: 200px;
}

.list-view .cut-card-content {
    padding: 2rem;
}

.list-view .cut-card-description {
    -webkit-line-clamp: 4;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    animation: fadeIn 0.2s;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

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

.modal-content {
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}

.modal-large {
    max-width: 900px;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s;
}

.close-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* 폼 스타일 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.required {
    color: var(--danger-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 이미지 업로드 */
.image-input-group {
    margin-bottom: 1rem;
}

.upload-area {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: var(--bg-color);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    transform: scale(1.02);
}

.upload-placeholder {
    color: var(--text-secondary);
}

.upload-placeholder i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.upload-placeholder p {
    margin: 0.5rem 0;
    font-weight: 600;
}

.upload-placeholder small {
    color: var(--text-secondary);
}

.image-preview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    object-fit: contain;
}

.remove-image-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
    box-shadow: var(--shadow-md);
}

.remove-image-btn:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* 상세 보기 */
.detail-view {
    max-height: 70vh;
    overflow-y: auto;
}

.detail-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.detail-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.detail-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.detail-section:last-child {
    border-bottom: none;
}

.detail-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    white-space: pre-wrap;
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-color);
    border-radius: 6px;
}

.meta-item i {
    color: var(--primary-color);
}

/* 빈 상태 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.empty-state i {
    font-size: 4rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.empty-state h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* 로딩 상태 */
.loading {
    text-align: center;
    padding: 4rem 2rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.loading i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.3rem;
    }

    .storyboard-grid {
        grid-template-columns: 1fr;
    }

    .list-view .cut-card {
        grid-template-columns: 1fr;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .view-controls {
        width: 100%;
    }

    .view-btn {
        flex: 1;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }

    .stats-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .header {
        padding: 1.5rem 0;
    }

    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .cut-card-actions {
        flex-direction: column;
    }

    .modal-body {
        padding: 1rem;
    }
}