#chat-panel{display:none;position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);width:380px;height:600px;background:var(--popup-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--popup-border);border-radius:var(--radius-lg);box-shadow:0 10px 40px var(--color-shadow-dark);z-index:var(--z-interface);flex-direction:column;animation:slideUpChat var(--transition-base);overflow:hidden}#chat-panel.show{display:flex}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) var(--spacing-lg);background:linear-gradient(135deg,var(--color-primary) 0,var(--color-primary-dark) 100%);color:var(--color-text-light);border-bottom:1px solid rgba(255,255,255,.1)}.chat-header-title h3{margin:0;font-size:var(--font-size-md);font-weight:700;margin-bottom:var(--spacing-xs)}.chat-room-info{font-size:var(--font-size-xs);opacity:.8}.chat-header-actions{display:flex;gap:var(--spacing-md)}.chat-header-btn{background:rgba(255,255,255,.2);color:var(--color-text-light);border:none;width:32px;height:32px;border-radius:var(--radius-md);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base);font-size:var(--font-size-sm)}.chat-header-btn:hover{background:rgba(255,255,255,.3)}.chat-sidebar{display:none;padding:10px;border-right:1px solid var(--color-border);width:280px;overflow-y:auto;background:var(--color-bg-secondary)}.chat-sidebar.show{display:block}.chat-sidebar-header{display:flex;gap:8px;margin-bottom:15px}.chat-sidebar-header input{flex:1;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:13px;background:var(--color-bg);color:var(--color-text)}.chat-sidebar-header button{background:var(--color-primary);color:#fff;border:none;width:36px;height:36px;border-radius:var(--radius-md);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}.chat-sidebar-header button:hover{background:var(--color-primary-dark)}.chat-rooms-list{display:flex;flex-direction:column;gap:4px}.chat-room-item{padding:10px 12px;border-radius:var(--radius-md);cursor:pointer;font-size:13px;color:var(--color-text);transition:.2s;display:flex;align-items:center;gap:10px}.chat-room-item:hover{background:rgba(var(--color-primary-rgb),.1);color:var(--color-primary)}.chat-room-item.active{background:var(--color-primary);color:#fff}.chat-room-avatar{width:32px;height:32px;border-radius:50%;background:rgba(var(--color-primary-rgb),.2);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0}.chat-room-item.active .chat-room-avatar{background:rgba(255,255,255,.2)}#chat-messages{flex:1;overflow-y:auto;padding:15px;display:flex;flex-direction:column;gap:8px;background:var(--color-bg)}.chat-empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--color-text-muted);text-align:center;font-size:14px}.chat-empty-state i{font-size:48px;margin-bottom:15px;opacity:.5}.chat-message{display:flex;align-items:flex-end;gap:8px;margin-bottom:8px;animation:.2s fadeInMessage}@keyframes fadeInMessage{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-message.own{justify-content:flex-end;flex-direction:row-reverse}.chat-message.other{justify-content:flex-start}.chat-message.system{justify-content:center;align-items:center;margin:12px 0;gap:0}.chat-message-avatar{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;font-size:14px;font-weight:700;flex-shrink:0;background:linear-gradient(135deg,var(--color-primary) 0,var(--color-primary-dark) 100%);color:#fff}.chat-message.other .chat-message-avatar{background:linear-gradient(135deg,var(--color-danger) 0,var(--color-warning) 100%)}[data-theme=dark] .chat-message-avatar{background:linear-gradient(135deg,var(--color-primary) 0,var(--color-primary-dark) 100%)}[data-theme=dark] .chat-message.other .chat-message-avatar{background:linear-gradient(135deg,var(--color-danger) 0,var(--color-warning) 100%)}.chat-message-content{display:flex;flex-direction:column;max-width:70%;gap:4px}.chat-message.own .chat-message-content{align-items:flex-end}.chat-message.other .chat-message-content{align-items:flex-start}.chat-message-header{display:flex;align-items:center;gap:6px;font-size:12px;opacity:.7}.chat-message.own .chat-message-header{flex-direction:row-reverse}.chat-message-name{font-weight:700}.chat-message-time{opacity:.6;font-size:11px}.chat-message-text{padding:10px 14px;border-radius:12px;word-wrap:break-word;line-height:1.4;word-break:break-word;font-size:13px;transition:.2s}.chat-message.own .chat-message-text{background:linear-gradient(135deg,#667eea 0,#764ba2 100%);color:#fff;border-bottom-right-radius:4px;box-shadow:0 2px 8px rgba(102,126,234,.2)}.chat-message.other .chat-message-text{background:#f0f0f0;color:#2c3e50;border-bottom-left-radius:4px;box-shadow:0 2px 8px rgba(0,0,0,.08)}[data-theme=dark] .chat-message.other .chat-message-text{background:#404040;color:#e8e8e8;box-shadow:0 2px 8px rgba(0,0,0,.3)}[data-theme=dark] .chat-message.own .chat-message-text{background:linear-gradient(135deg,#667eea 0,#764ba2 100%);color:#fff;box-shadow:0 2px 8px rgba(102,126,234,.4)}.chat-message:hover .chat-message-text{box-shadow:0 4px 12px rgba(0,0,0,.15)}[data-theme=dark] .chat-message:hover .chat-message-text{box-shadow:0 4px 12px rgba(255,255,255,.1)}.chat-message-text.edited{position:relative}.chat-message-text.edited::after{content:" (edited)";font-size:11px;opacity:.7}.chat-message-text.deleted{font-style:italic;opacity:.6}.chat-message-text.deleted::before{content:"[deleted] "}.chat-system-message{font-size:12px;color:#999;text-align:center;padding:8px 12px;background:rgba(0,0,0,.05);border-radius:12px;margin:4px auto}[data-theme=dark] .chat-system-message{background:rgba(255,255,255,.05);color:#aaa}.chat-message.read .chat-message-time{opacity:.8;font-weight:600;color:#667eea}[data-theme=dark] .chat-message.read .chat-message-time{color:#8a9dff}#chat-typing{display:flex;align-items:center;padding:8px 15px;font-size:13px;color:#999;background:#f9f9f9;border-top:1px solid #f0f0f0}.typing-dots{display:inline-flex;gap:4px;margin-left:6px}.typing-dots span{width:4px;height:4px;border-radius:50%;background:#667eea;animation:1.4s infinite typing}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,100%,60%{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-8px)}}.chat-input-area{display:flex;align-items:flex-end;gap:10px;padding:12px;background:#f9f9f9;border-top:1px solid #f0f0f0}.chat-input-actions{display:flex;gap:6px}.chat-action-btn{background:0 0;border:none;color:#667eea;font-size:16px;cursor:pointer;padding:6px;display:flex;align-items:center;justify-content:center;transition:.2s;width:30px;height:30px}.chat-action-btn:hover{color:#764ba2;transform:scale(1.15)}.chat-message-input{flex:1;padding:10px 14px;border:1px solid #e0e0e0;border-radius:20px;font-size:13px;font-family:inherit;resize:none;max-height:100px;transition:.2s}.chat-message-input:focus{outline:0;border-color:#667eea;background:rgba(102,126,234,.02)}.chat-send-btn{background:linear-gradient(135deg,#667eea 0,#764ba2 100%);color:#fff;border:none;width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:.2s;flex-shrink:0}.chat-send-btn:hover{transform:scale(1.1)}.chat-send-btn:active{transform:scale(.95)}@keyframes slideUpChat{from{transform:translateY(100px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width:768px){#chat-panel{width:100%;height:100%;max-width:100%;max-height:100%;bottom:0;right:0;border-radius:0}.chat-message-content{max-width:85%}}