/**
 * 비교 차트 스타일
 */

.comparison-section {
    background: var(--card);
    border-radius: 16px;
    padding: 24px;
    margin: 32px 0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--line);
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--line);
}

.comparison-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.btn-clear-all {
    padding: 8px 16px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.btn-clear-all:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.comparison-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.keyword-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 8px 12px;
    transition: all 0.2s ease;
}

.keyword-chip:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.keyword-name {
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
}

.keyword-score {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

.btn-remove {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-remove:hover {
    background: #ef4444;
    color: white;
    transform: scale(1.1);
}

.comparison-charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.chart-container {
    background: var(--bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--line);
    min-height: 350px;
}

.chart-container h4 {
    margin: 0 0 16px 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.chart-container canvas {
    max-height: 400px;
}

/* 큰 차트는 전체 너비 사용 */
.trend-chart-container,
.profitability-chart-container {
    grid-column: 1 / -1;
}

.trend-chart-container canvas,
.profitability-chart-container canvas {
    max-height: 350px;
}

/* 비교에 추가 버튼 */
.btn-add-comparison {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin-top: 16px;
}

.btn-add-comparison:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-add-comparison:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-add-comparison::before {
    content: '➕';
    font-size: 0.9rem;
}

/* 트렌드 차트 컨테이너 */
.trend-chart-container {
    grid-column: 1 / -1;
}

/* 수익성 매트릭스 */
.profitability-chart-container {
    grid-column: 1 / -1;
}

/* 황금 키워드 구역 강조 */
.golden-zone-label {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(251, 191, 36, 0.2);
    color: #f59e0b;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(251, 191, 36, 0.5);
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    .comparison-section {
        padding: 16px;
        margin: 20px 0;
    }
    
    .comparison-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .comparison-header h3 {
        font-size: 1.2rem;
    }
    
    .btn-clear-all {
        width: 100%;
        justify-content: center;
    }
    
    .comparison-keywords {
        gap: 8px;
    }
    
    .keyword-chip {
        font-size: 0.85rem;
        padding: 6px 10px;
    }
    
    .comparison-charts {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .chart-container {
        padding: 12px;
        min-height: auto;
    }
    
    .chart-container h4 {
        font-size: 1rem;
    }
    
    .chart-container canvas {
        max-height: 250px;
    }
    
    .trend-chart-container canvas,
    .profitability-chart-container canvas {
        max-height: 300px;
    }
    
    .btn-add-comparison {
        width: 100%;
        justify-content: center;
        font-size: 0.85rem;
    }
}

/* 태블릿 */
@media (min-width: 769px) and (max-width: 1024px) {
    .comparison-charts {
        grid-template-columns: 1fr;
    }
}

/* 다크모드 호환 */
@media (prefers-color-scheme: dark) {
    .comparison-section {
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    }
    
    .keyword-chip {
        background: rgba(255, 255, 255, 0.05);
    }
    
    .chart-container {
        background: rgba(255, 255, 255, 0.02);
    }
}

/* 로딩 상태 */
.comparison-loading {
    text-align: center;
    padding: 40px;
    color: var(--muted);
}

.comparison-loading::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

/* 빈 상태 */
.comparison-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--muted);
}

.comparison-empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.comparison-empty-text {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.comparison-empty-hint {
    font-size: 0.9rem;
    color: var(--muted);
}

/* 애니메이션 */
@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* 차트 페이드인 */
.chart-container {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}