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#eee;cursor:pointer;transition:background-color .2s}.search-result-item:hover{background-color:#f5f5f5}.search-result-item:last-child{border-bottom:none}.search-result-name{font-weight:700}.search-result-info{display:flex;margin-top:4px;font-size:12px;color:#666}.search-result-username{margin-right:10px}.search-result-role{display:flex;align-items:center}.search-role-indicator{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:4px}.search-role-mentor{background-color:#4dabf5}.search-role-mentee{background-color:#ffa726}.search-role-both{background-color:#9c27b0}.search-no-results{padding:12px;text-align:center;color:#666;font-style:italic}#graph-container{width:100%;height:600px;background-color:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a;overflow:hidden;position:relative}.loading{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;color:#999}.loading-spinner{border:5px solid #f3f3f3;border-top:5px solid #3498db;border-radius:50%;width:50px;height:50px;animation:spin 2s linear infinite;margin:0 auto 15px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.controls{margin-top:20px;padding:15px;background-color:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a}.control-row{display:flex;margin-bottom:15px;justify-content:space-between;flex-wrap:wrap}.control-btn{padding:8px 16px;background-color:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px;transition:background-color .3s;margin-right:8px;margin-bottom:8px}.control-btn:hover{background-color:#388e3c}.slider-container{display:flex;align-items:center;margin-right:20px;margin-bottom:8px}.slider-container label{margin-right:10px;white-space:nowrap}input[type=range]{width:120px}.filter-container{display:flex;gap:15px}.filter-container label{display:flex;align-items:center;gap:5px;cursor:pointer}.legend{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.legend-item{display:flex;align-items:center;gap:8px;margin-bottom:5px}.legend-color{width:15px;height:15px;border-radius:50%}#hierarchy-panel{position:absolute;top:15px;right:15px;width:320px;max-height:570px;background-color:#0c0c0cd9;border-radius:8px;box-shadow:0 4px 15px #0003;color:#fff;padding:15px;z-index:100;overflow-y:auto;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);transform:translate(350px);transition:transform .3s ease-out;display:none}#hierarchy-panel.visible{transform:translate(0);display:block}#hierarchy-panel h3{margin-top:0;border-bottom:1px solid rgba(255,255,255,.2);padding-bottom:8px;font-size:18px}#hierarchy-panel .hierarchy-close{position:absolute;top:10px;right:10px;background:none;border:none;color:#fff;font-size:16px;cursor:pointer;opacity:.7}#hierarchy-panel .hierarchy-close:hover{opacity:1}#hierarchy-panel .node-stats{display:flex;justify-content:space-between;padding:10px 0;margin-bottom:10px;border-bottom:1px solid rgba(255,255,255,.1)}#hierarchy-panel .node-stat{text-align:center;flex:1}#hierarchy-panel .node-stat-value{font-size:24px;font-weight:700;margin-bottom:5px}#hierarchy-panel .node-stat-label{font-size:12px;opacity:.7}#hierarchy-panel .node-meta{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:10px}#hierarchy-panel .node-detail{font-size:14px;margin-bottom:5px;display:flex;justify-content:space-between}#hierarchy-panel .node-detail-label{opacity:.7}#hierarchy-panel .hierarchy-section{margin-top:15px}#hierarchy-panel .hierarchy-section h4{margin-top:0;margin-bottom:10px;font-size:15px;display:flex;align-items:center}#hierarchy-panel .hierarchy-count{background-color:#ffffff1a;padding:2px 8px;border-radius:10px;font-size:12px;margin-left:8px}#hierarchy-panel .relationship-list{list-style:none;padding:0;margin:0}#hierarchy-panel .relationship-item{padding:8px;border-radius:4px;margin-bottom:5px;background-color:#ffffff0d;font-size:13px;transition:background-color .2s;cursor:pointer}#hierarchy-panel .relationship-item:hover{background-color:#ffffff1a}#hierarchy-panel .relationship-item-name{font-weight:700}#hierarchy-panel .relationship-item-id{opacity:.5;font-size:11px;margin-top:3px}#hierarchy-panel .node-role{display:flex;align-items:center;gap:5px}#hierarchy-panel .role-indicator{width:12px;height:12px;border-radius:50%;display:inline-block}#hierarchy-panel .role-mentor{background-color:#4dabf5}#hierarchy-panel .role-mentee{background-color:#ffa726}#hierarchy-panel .role-both{background-color:#9c27b0}#hierarchy-panel .empty-message{text-align:center;padding:15px;opacity:.6;font-style:italic}@media (max-width: 768px){.control-row{flex-direction:column;align-items:flex-start}.legend{margin-top:10px}#graph-container{height:400px}#hierarchy-panel{top:auto;right:auto;left:50%;bottom:15px;transform:translate(-50%) translateY(100%);width:90%;max-height:60vh}#hierarchy-panel.visible{transform:translate(-50%) translateY(0)}}