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

body {
    font-family: 'Noto Sans KR', 'Malgun Gothic', '맑은 고딕', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.nav-btn {
    background: rgba(255,255,255,0.2);
    border: 2px solid rgba(255,255,255,0.3);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-family: 'Noto Sans KR', 'Malgun Gothic', '맑은 고딕', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.nav-btn.active {
    background: rgba(255,255,255,0.4);
    border-color: rgba(255,255,255,0.8);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.art-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.art-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.art-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #333;
}

.art-category {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-bottom: 15px;
}

.art-content {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    white-space: pre;
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    overflow-x: auto;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.control-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-family: 'Noto Sans KR', 'Malgun Gothic', '맑은 고딕', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* 자동 생성 버튼 특별 스타일 */
#autoGenerateBtn {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    animation: pulse 2s infinite;
}

#autoGenerateBtn:hover {
    background: linear-gradient(45deg, #ee5a24, #ff6b6b);
    animation: none;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* 모달 스타일 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 1px solid #e9ecef;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border-radius: 15px 15px 0 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.close-btn:hover {
    background: rgba(255,255,255,0.2);
}

.modal-body {
    padding: 30px;
}

.editor-controls {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.title-input, .category-select {
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-family: 'Noto Sans KR', 'Malgun Gothic', '맑은 고딕', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.title-input {
    flex: 1;
    min-width: 200px;
}

.category-select {
    min-width: 120px;
}

.title-input:focus, .category-select:focus {
    outline: none;
    border-color: #667eea;
}

.ascii-editor {
    width: 100%;
    height: 300px;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    resize: vertical;
    margin-bottom: 20px;
}

.ascii-editor:focus {
    outline: none;
    border-color: #667eea;
}

.editor-buttons {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
}

.save-btn, .clear-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Noto Sans KR', 'Malgun Gothic', '맑은 고딕', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.save-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.clear-btn {
    background: #6c757d;
    color: white;
}

.clear-btn:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .nav {
        gap: 10px;
    }
    
    .nav-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .gallery {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .editor-controls {
        flex-direction: column;
    }
    
    .title-input, .category-select {
        min-width: auto;
    }
}

/* 애니메이션 효과 */
.art-card {
    animation: fadeInUp 0.6s ease;
}

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

/* 스크롤바 스타일링 */
.art-content::-webkit-scrollbar {
    height: 8px;
}

.art-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.art-content::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 4px;
}

.art-content::-webkit-scrollbar-thumb:hover {
    background: #5a6fd8;
}