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button:hover{background:var(--bg-soft)}.project-list-overlay,.chat-history-overlay{background:var(--bg-panel);z-index:5;flex-direction:column;display:flex;position:absolute;inset:0;overflow:auto}.project-list-header,.chat-history-header{color:var(--text-muted);border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:10px 12px;font-size:12px;font-weight:600;display:flex}.project-row,.chat-row{border-bottom:1px solid var(--border-subtle);cursor:pointer;justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;transition:background 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