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rgba(102,126,234,.2);text-align:center;color:#94a3b8;font-size:.9rem;position:relative;z-index:1}.footer-bottom:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:100px;height:1px;background:linear-gradient(90deg,transparent,rgba(102,126,234,.5),transparent)}.muscle-wiki-page{min-height:calc(100vh - 80px);padding:2rem;background:#f7fafc}.muscle-wiki-container{max-width:1400px;margin:0 auto}.muscle-wiki-header{text-align:center;margin-bottom:3rem}.muscle-wiki-title{font-size:3rem;font-weight:800;color:#1a202c;margin-bottom:.5rem}.muscle-wiki-subtitle{font-size:1.25rem;color:#4a5568;margin-bottom:1.5rem}.back-to-home-btn{padding:.75rem 1.5rem;background:#fff;color:#667eea;border:2px solid #667eea;border-radius:8px;font-weight:600;cursor:pointer;transition:all .3s ease}.back-to-home-btn:hover{background:#667eea;color:#fff}.muscle-wiki-content{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) 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#00000014;border-color:#cbd5e0}.metric-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.75rem;flex-shrink:0}.users-icon{background:linear-gradient(135deg,#e6fffa,#b2f5ea);color:#2c7a7b}.active-icon{background:linear-gradient(135deg,#ebf8ff,#bee3f8);color:#2b6cb0}.posts-icon{background:linear-gradient(135deg,#fffaf0,#feebc8);color:#c05621}.workouts-icon{background:linear-gradient(135deg,#fff5f5,#fed7d7);color:#c53030}.metric-content{flex:1}.metric-value{font-size:2.25rem;font-weight:800;color:#1a202c;line-height:1;margin-bottom:.5rem;letter-spacing:-.02em}.metric-label{font-size:.95rem;color:#4a5568;margin-bottom:.5rem;font-weight:600}.metric-change{font-size:.8rem;font-weight:700;display:inline-block;color:#48bb78}.charts-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:1.5rem;margin-bottom:2rem}.chart-container{background:#fff;padding:2rem;border-radius:16px;box-shadow:0 4px 6px -1px #0000000d;border:1px solid #edf2f7;display:flex;flex-direction:column}.chart-container.full-width{grid-column:1 / -1}.chart-header{margin-bottom:2rem}.chart-header h3{margin:0 0 .5rem;color:#2d3748;font-size:1.25rem;font-weight:700}.chart-header p{margin:0;color:#718096;font-size:.95rem}.chart-wrapper{flex:1;min-height:0}.summary-section{background:#fff;padding:2.5rem;border-radius:16px;box-shadow:0 4px 6px -1px #0000000d;border:1px solid #edf2f7;margin-top:3rem}.summary-section h3{margin:0 0 2rem;color:#2d3748;font-size:1.5rem;font-weight:800}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}.summary-card{background:#f8fafc;padding:1.5rem;border-radius:12px;display:flex;align-items:center;gap:1.25rem;transition:all .2s ease;border:1px solid transparent}.summary-card:hover{background:#fff;border-color:#cbd5e0;box-shadow:0 10px 15px -3px #0000000d;transform:translateY(-2px)}.summary-icon{font-size:2rem;background:#fff;width:50px;height:50px;border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px #0000000d}.summary-content{flex:1}.summary-value{font-size:1.75rem;font-weight:800;color:#2d3748;line-height:1.1;margin-bottom:.25rem}.summary-label{font-size:.95rem;color:#4a5568;font-weight:600;margin-bottom:.25rem}.summary-desc{font-size:.85rem;color:#718096}.loading{display:flex;justify-content:center;align-items:center;height:50vh;font-size:1.2rem;color:#4a5568;background:#f8fafc}.error{display:flex;justify-content:center;align-items:center;height:50vh;color:#e53e3e;font-weight:600}@media(max-width:1200px){.charts-row{grid-template-columns:1fr}}@media(max-width:768px){.analytics{padding:1rem}.analytics-header{flex-direction:column;align-items:flex-start;gap:1.5rem}.time-filter{width:100%;overflow-x:auto}.time-filter 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h3{margin:0;color:#fff;font-size:1.2rem}.challenge-body{padding:1.5rem}.challenge-description{color:#555;line-height:1.6;margin-bottom:1rem}.challenge-details{background:#f5f5f5;padding:1rem;border-radius:8px;margin-bottom:1rem}.detail-item{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid #e0e0e0}.detail-item:last-child{border-bottom:none}.detail-label{font-weight:600;color:#666;font-size:.9rem}.detail-value{color:#333;font-size:.9rem}.challenge-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:1rem}.stat-box{background:linear-gradient(135deg,#f5f5f5,#e9e9e9);padding:1rem;border-radius:8px;text-align:center}.stat-number{font-size:2rem;font-weight:700;color:#4caf50;margin-bottom:.25rem}.stat-text{font-size:.85rem;color:#666;text-transform:uppercase;letter-spacing:.5px}.challenge-actions{display:flex;gap:.5rem;padding:1rem 1.5rem;background:#f9f9f9;border-top:1px solid #e0e0e0}.challenge-actions button{flex:1;padding:.75rem 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