.chat-overlay{position:fixed;top:0;right:0;width:400px;height:100vh;background:#fff;box-shadow:-2px 0 10px #0000001a;z-index:1000;display:flex;flex-direction:column}.chat-room{display:flex;flex-direction:column;height:100%;background:#fff}.chat-header{padding:16px;border-bottom:1px solid #e0e0e0;background:#f5f5f5;display:flex;justify-content:space-between;align-items:center}.chat-info h3{margin:0 0 8px;font-size:18px}.chat-status{display:flex;gap:12px;font-size:12px;align-items:center}.connection-status{display:flex;align-items:center;gap:4px}.connection-status.connected{color:#4caf50}.connection-status.disconnected{color:#f44336}.room-status{padding:2px 8px;background:#fff3cd;border-radius:4px;font-size:11px}.unread-badge{background:#ff5722;color:#fff;padding:2px 8px;border-radius:12px;font-size:11px}.chat-actions{display:flex;gap:8px}.btn-mark-read{padding:6px 12px;background:#2196f3;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:12px}.btn-mark-read:hover{background:#1976d2}.btn-close{width:32px;height:32px;background:#f44336;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:20px;display:flex;align-items:center;justify-content:center}.btn-close:hover{background:#d32f2f}.messages-container{flex:1;overflow-y:auto;padding:16px;background:#fafafa}.message{margin-bottom:16px;padding:12px;border-radius:8px;max-width:80%}.own-message{background:#e3f2fd;margin-left:auto;border-bottom-right-radius:4px}.other-message{background:#fff;margin-right:auto;border-bottom-left-radius:4px;box-shadow:0 1px 2px #0000001a}.message-header{display:flex;justify-content:space-between;margin-bottom:4px;font-size:12px}.message-header strong{color:#333}.message-time{color:#999;font-size:11px}.message-content{margin:8px 0;word-wrap:break-word;line-height:1.4}.reply-preview{padding:4px 8px;background:#0000000d;border-left:3px solid #2196f3;margin-bottom:8px;font-size:12px;color:#666}.file-attachment{margin-top:8px;padding:8px;background:#0000000d;border-radius:4px}.file-attachment a{color:#2196f3;text-decoration:none}.file-attachment a:hover{text-decoration:underline}.message-actions{margin-top:4px;display:flex;gap:8px}.btn-reply{padding:2px 8px;background:transparent;color:#2196f3;border:1px solid #2196f3;border-radius:4px;cursor:pointer;font-size:11px}.btn-reply:hover{background:#2196f3;color:#fff}.typing-indicator{padding:8px;font-size:12px;color:#666;font-style:italic}.reply-preview-bar{padding:8px 16px;background:#fff3cd;border-top:1px solid #ffc107;display:flex;justify-content:space-between;align-items:center}.reply-info{font-size:12px;color:#666}.btn-cancel-reply{background:transparent;border:none;font-size:20px;cursor:pointer;color:#666}.btn-cancel-reply:hover{color:#333}.message-input-container{padding:16px;border-top:1px solid #e0e0e0;background:#fff;display:flex;gap:8px}.message-input{flex:1;padding:12px;border:1px solid #ddd;border-radius:4px;resize:none;font-family:inherit;font-size:14px}.message-input:focus{outline:none;border-color:#2196f3}.message-input:disabled{background:#f5f5f5;cursor:not-allowed}.btn-send{padding:12px 24px;background:#2196f3;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500}.btn-send:hover:not(:disabled){background:#1976d2}.btn-send:disabled{background:#ccc;cursor:not-allowed}@media(max-width:768px){.chat-overlay{width:100%}}.project-list{padding:20px}.project-card{border:1px solid #ddd;padding:16px;margin-bottom:12px;border-radius:8px;background:#fff}.project-card h3{margin:0 0 8px}.project-card p{margin:0 0 12px;color:#666}.project-card button{padding:8px 16px;background:#2196f3;color:#fff;border:none;border-radius:4px;cursor:pointer}.project-card button:hover{background:#1976d2}.connection-status.connected{color:#10b981}.connection-status.disconnected{color:#ef4444}.room-status{font-size:.8em;margin-left:8px;color:#6b7280}.connection-hint{font-size:.9em;margin-top:8px;color:#6b7280;font-style:italic}.chat-status{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.unread-badge{background:#ef4444;color:#fff;padding:2px 6px;border-radius:10px;font-size:.7em}.loading-spinner{border:2px solid #f3f3f3;border-top:2px solid #3498db;border-radius:50%;width:20px;height:20px;animation:spin 1s linear infinite;margin:0 auto 10px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.no-messages{text-align:center;padding:40px 20px;color:#666}.connection-hint{margin-top:10px;font-size:.9em;color:#888}@keyframes pulse-gentle{0%,to{border-color:#ef4444;box-shadow:0 0 #ef444433}50%{border-color:#b91c1c;box-shadow:0 0 0 4px #ef44441a}}.animate-pulse-gentle{animation:pulse-gentle 2s ease-in-out infinite}