:root{--bg-primary: #fafafa;--bg-secondary: #ffffff;--text-primary: #333333;--text-secondary: #666666;--accent: #e91e63;--accent-light: #fce4ec;--border: #e0e0e0;--shadow: 0 2px 8px rgba(0, 0, 0, .1);--radius: 8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}header{background:linear-gradient(135deg,var(--accent),#9c27b0);color:#fff;padding:2rem;text-align:center}header h1{font-size:2rem;margin-bottom:.5rem}header .subtitle{opacity:.9;font-size:1rem}main{flex:1;max-width:1200px;margin:0 auto;padding:2rem;width:100%}.search-section{margin-bottom:2rem}.search-container{display:flex;gap:.5rem;max-width:600px;margin:0 auto}#search-input{flex:1;padding:1rem 1.5rem;font-size:1rem;border:2px solid var(--border);border-radius:var(--radius);outline:none;transition:border-color .2s}#search-input:focus{border-color:var(--accent)}#search-btn{padding:1rem 2rem;font-size:1rem;font-weight:600;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);cursor:pointer;transition:background .2s}#search-btn:hover{background:#c2185b}#search-btn:disabled{background:#ccc;cursor:not-allowed}.status{text-align:center;margin-top:1rem;color:var(--text-secondary);font-size:.9rem}.status.error{color:#d32f2f}.chart-container{background:var(--bg-secondary);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;margin-bottom:2rem;min-height:300px;display:flex;align-items:center;justify-content:center}.chart-container .placeholder{color:var(--text-secondary);text-align:center}.clusters-container{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:1.5rem}.cluster-card{background:var(--bg-secondary);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;transition:transform .2s,box-shadow .2s}.cluster-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px #00000026}.cluster-card .similarity{display:inline-block;background:var(--accent-light);color:var(--accent);padding:.25rem .5rem;border-radius:4px;font-size:.8rem;font-weight:600;margin-bottom:.5rem}.cluster-card h3{font-size:1.1rem;margin-bottom:.5rem;color:var(--text-primary)}.cluster-card .description{font-size:.9rem;color:var(--text-secondary);margin-bottom:1rem}.cluster-card .keywords{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}.cluster-card .keyword{background:#f5f5f5;padding:.25rem .5rem;border-radius:4px;font-size:.8rem;color:var(--text-secondary)}.cluster-card .stats{display:flex;gap:1rem;font-size:.85rem;color:var(--text-secondary);border-top:1px solid var(--border);padding-top:1rem}.cluster-card .stat{display:flex;flex-direction:column}.cluster-card .stat-label{font-size:.75rem;text-transform:uppercase;opacity:.7}.cluster-card .stat-value{font-weight:600;color:var(--text-primary)}.loading{display:flex;align-items:center;justify-content:center;gap:.5rem}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:1.5rem;text-align:center;color:var(--text-secondary);font-size:.85rem}@media (max-width: 600px){header{padding:1.5rem}header h1{font-size:1.5rem}main{padding:1rem}.search-container{flex-direction:column}.clusters-container{grid-template-columns:1fr}}