/**
 * Labs 전용 CSS 스타일
 * 다크모드/라이트모드 지원 및 현대적인 디자인
 */

/* Labs 기본 테마 - 다크모드 */
:root {
    --labs-bg-primary: #0f0f0f;
    --labs-bg-secondary: #1a1a1a;
    --labs-bg-card: #222222;
    --labs-text-primary: #ffffff;
    --labs-text-secondary: #b0b0b0;
    --labs-border: #333333;
    --labs-shadow: rgba(0, 0, 0, 0.5);
    --labs-gradient-start: #1a1a2e;
    --labs-gradient-end: #16213e;
    --labs-accent: #4a9eff;
    --labs-accent-hover: #357abd;
    --labs-success: #28a745;
    --labs-warning: #ffc107;
    --labs-danger: #dc3545;
    --labs-info: #17a2b8;
}

/* 라이트모드 (선택적) */
[data-theme="light"] {
    --labs-bg-primary: #ffffff;
    --labs-bg-secondary: #f8f9fa;
    --labs-bg-card: #ffffff;
    --labs-text-primary: #212529;
    --labs-text-secondary: #6c757d;
    --labs-border: #dee2e6;
    --labs-shadow: rgba(0, 0, 0, 0.1);
    --labs-gradient-start: #667eea;
    --labs-gradient-end: #764ba2;
    --labs-accent: #007bff;
    --labs-accent-hover: #0056b3;
}

/* Labs 메인 컨테이너 */
.labs-container {
    background: linear-gradient(135deg, var(--labs-gradient-start), var(--labs-gradient-end));
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.labs-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

/* 헤더 섹션 */
.labs-hero {
    position: relative;
    z-index: 2;
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.labs-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    color: white;
}

.labs-hero h1 .text-gradient {
    background: linear-gradient(45deg, #fff, #e3f2fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.labs-hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.labs-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.labs-stat {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 1rem 2rem;
    text-align: center;
}

.labs-stat-number {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.labs-stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 메인 콘텐츠 */
.labs-content {
    position: relative;
    z-index: 2;
    background: var(--labs-bg-primary);
    border-radius: 30px 30px 0 0;
    margin-top: -30px;
    padding: 3rem 0;
    box-shadow: 0 -10px 30px var(--labs-shadow);
}

/* Labs 카드 */
.labs-card {
    background: var(--labs-bg-card);
    border: 1px solid var(--labs-border);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: visible;
    box-shadow: 0 4px 15px var(--labs-shadow);
}

.labs-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--labs-shadow);
}

.labs-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.labs-card .card-title {
    color: var(--labs-text-primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.labs-card .card-text {
    color: var(--labs-text-secondary);
    flex: 1;
    margin-bottom: 1.5rem;
}

/* 언어 카드 */
.language-card {
    background: var(--labs-bg-card);
    border: 1px solid var(--labs-border);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: visible;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.language-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--labs-gradient-start), var(--labs-gradient-end));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.language-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px var(--labs-shadow);
}

.language-card:hover::before {
    transform: scaleX(1);
}

.language-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.language-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--labs-text-primary);
    margin-bottom: 0.5rem;
}

.language-description {
    color: var(--labs-text-secondary);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.language-category-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 0.5rem;
}

.language-category {
    background: var(--labs-accent);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
    width: fit-content;
    flex-shrink: 0;
}

.language-new-badge {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
    width: fit-content;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    animation: pulse-new 2s infinite;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

@keyframes pulse-new {
    0% {
        box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 4px 16px rgba(255, 107, 107, 0.5);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
        transform: scale(1);
    }
}

.language-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.language-rank {
    background: var(--labs-gradient-start);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    display: none; /* 화면에서 숨김 */
    margin-right: 1rem;
}

/* 치트시트는 이제 .labs-code 클래스를 사용하여 학습 페이지와 동일한 스타일 적용 */

.language-link {
    background: var(--labs-accent);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.language-link:hover {
    background: var(--labs-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
    color: white;
    text-decoration: none;
}

/* 카테고리 통계 */
.category-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.category-stat {
    background: var(--labs-bg-card);
    border: 1px solid var(--labs-border);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.category-stat:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px var(--labs-shadow);
}

.category-stat-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--labs-text-primary);
    margin-bottom: 0.5rem;
}

.category-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
    margin-bottom: 0.5rem;
}

.category-stat-label {
    color: var(--labs-text-secondary);
    font-size: 0.9rem;
}

/* CTA 섹션 */
.labs-cta {
    background: linear-gradient(135deg, var(--labs-gradient-start), var(--labs-gradient-end));
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    color: white;
    margin: 3rem 0;
    position: relative;
    overflow: hidden;
}

.labs-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.labs-cta-content {
    position: relative;
    z-index: 2;
}

.labs-cta h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.labs-cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.labs-cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.labs-cta-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 1rem 2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.labs-cta-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    color: white;
    text-decoration: none;
}

/* 학습 팁 */
.learning-tips {
    margin: 3rem 0;
}

.learning-tip {
    background: var(--labs-bg-card);
    border: 1px solid var(--labs-border);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.learning-tip:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 25px var(--labs-shadow);
}

.learning-tip-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--labs-gradient-start), var(--labs-gradient-end));
    color: white;
    flex-shrink: 0;
}

.learning-tip-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--labs-text-primary);
    margin-bottom: 0.5rem;
    flex-shrink: 0;
}

.learning-tip-description {
    color: var(--labs-text-secondary);
    line-height: 1.6;
    flex-grow: 1;
    display: flex;
    align-items: center;
}

/* 헤더 테마 토글 버튼 스타일 개선 */
#themeToggle {
    transition: all 0.3s ease;
}

#themeToggle:hover {
    transform: scale(1.1);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .labs-hero h1 {
        font-size: 2.5rem;
    }
    
    .labs-stats {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .labs-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .language-card {
        padding: 1.5rem;
    }
    
    .category-stats {
        grid-template-columns: 1fr;
    }
}

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

.language-card,
.category-stat,
.learning-tip {
    animation: fadeInUp 0.6s ease-out;
}

.language-card:nth-child(2) { animation-delay: 0.1s; }
.language-card:nth-child(3) { animation-delay: 0.2s; }
.language-card:nth-child(4) { animation-delay: 0.3s; }

/* 코드 하이라이팅 개선 */
.labs-code {
    background: var(--labs-bg-secondary);
    border: 1px solid var(--labs-border);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.labs-code pre {
    margin: 0;
    color: var(--labs-text-primary);
}

.labs-code code {
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* 탭 스타일 개선 */
.labs-tabs {
    background: var(--labs-bg-card);
    border: 1px solid var(--labs-border);
    border-radius: 15px;
    overflow: hidden;
    margin: 2rem 0;
}

.labs-tab-list {
    display: flex;
    background: var(--labs-bg-secondary);
    border-bottom: 1px solid var(--labs-border);
}

.labs-tab {
    flex: 1;
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--labs-text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.labs-tab:hover {
    background: var(--labs-bg-card);
    color: var(--labs-text-primary);
}

.labs-tab.active {
    background: var(--labs-bg-card);
    color: var(--labs-accent);
}

.labs-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--labs-accent);
}

.labs-tab-panel {
    padding: 2rem;
    display: none;
}

.labs-tab-panel.active {
    display: block;
    animation: fadeInUp 0.3s ease-out;
}

/* 태그 스타일 */
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--labs-accent);
    color: white;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tag-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 다크모드에서 태그 색상 조정 */
[data-theme="dark"] .tag-badge {
    background: var(--labs-accent);
    color: white;
}

/* 사이드바 스타일 개선 */
.labs-card .card-body.p-3 {
    padding: 1rem !important;
}

.labs-card h6 {
    color: var(--labs-text-primary);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.labs-card .text-muted {
    color: var(--labs-text-secondary) !important;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.labs-card .fw-bold {
    color: var(--labs-text-primary);
    font-size: 0.9rem;
}

.labs-card .btn-sm {
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
}

/* 학습 팁 스타일 */
.learning-tips {
    line-height: 1.4;
}

.tip-item {
    display: flex;
    align-items: flex-start;
    color: var(--labs-text-secondary);
}

.tip-item small {
    font-size: 0.85rem;
    line-height: 1.3;
}

.tip-item i {
    margin-top: 0.1rem;
    flex-shrink: 0;
}

/* 반응형 개선 */
@media (max-width: 768px) {
    .labs-hero h1 {
        font-size: 2.5rem;
    }
    
    .labs-hero p {
        font-size: 1rem;
    }
    
    .labs-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .labs-stat {
        padding: 0.75rem 1.5rem;
    }
    
    .labs-card .card-body.p-3 {
        padding: 0.75rem !important;
    }
    
    .labs-card h6 {
        font-size: 0.9rem;
        margin-bottom: 0.75rem;
    }
    
    .tip-item small {
        font-size: 0.8rem;
    }
}

/* 치트시트 아이템 박스 최소 높이 설정 */
.cheatsheet-item {
    min-height: 300px;
    display: flex;
    flex-direction: column;
}