:root{--bg-color:#f0f2f5;--panel-bg:#ffffffe6;--sidebar-bg:#fdfdfd;--border-color:#00000014;--text-primary:#111b21;--text-secondary:#667781;--accent-color:#00a884;--accent-hover:#06cf9c;--glass-effect:blur(20px) saturate(180%);--chat-bubble-in:#fff;--chat-bubble-out:#d9fdd3;--sidebar-width:350px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-color);color:var(--text-primary);height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow:hidden}#root{width:100vw;height:100vh;display:flex}.dashboard-container{background:var(--bg-color);width:100%;height:100%;display:flex}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);border-right:1px solid var(--border-color);color:var(--text-primary);flex-direction:column;display:flex}.sidebar-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:20px;display:flex}.search-container{padding:15px}.search-input{width:100%;color:var(--text-primary);background:#f0f2f5;border:none;border-radius:8px;outline:none;padding:10px 15px}.nav-tabs{background:var(--sidebar-bg);border-bottom:1px solid var(--border-color);display:flex}.nav-tab{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-bottom:3px solid #0000;flex:1;padding:12px;font-size:.9rem;font-weight:600;transition:all .2s}.nav-tab:hover{background:#00000005}.nav-tab.active{color:var(--accent-color);border-bottom-color:var(--accent-color)}.conversation-list{flex:1;overflow-y:auto}.conversation-item{cursor:pointer;border-bottom:1px solid #30363d33;align-items:center;padding:15px 20px;transition:background .2s;display:flex}.conversation-item:hover{background:#ffffff0d}.conversation-item.active{border-left:3px solid var(--accent-color);background:#2386361a}.avatar{width:45px;height:45px;color:var(--text-secondary);background:#e9edef;border-radius:50%;justify-content:center;align-items:center;margin-right:15px;font-weight:700;display:flex}.conv-details{flex:1;min-width:0}.conv-header{justify-content:space-between;margin-bottom:4px;display:flex}.conv-name{white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.conv-time{color:var(--text-secondary);font-size:.75rem}.conv-last-msg{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:.85rem;overflow:hidden}.chat-main{background:#efeae2;flex-direction:column;flex:1;display:flex;position:relative}.chat-header{background:var(--panel-bg);-webkit-backdrop-filter:var(--glass-effect);backdrop-filter:var(--glass-effect);border-bottom:1px solid var(--border-color);align-items:center;padding:15px 25px;display:flex}.messages-container{background-image:radial-gradient(#2386360d 1px,#0000 1px);background-size:30px 30px;flex-direction:column;flex:1;gap:12px;padding:20px 40px;display:flex;overflow-y:auto}.message-row{width:100%;display:flex}.message-row.in{justify-content:flex-start}.message-row.out{justify-content:flex-end}.message-bubble{max-width:65%;padding:10px 15px}.message-bubble .loading,.message-bubble .empty-state{color:var(--text-secondary);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.message-bubble .empty-icon{opacity:.3;margin-bottom:20px;font-size:4rem}.message-bubble .status-indicator{color:var(--accent-hover);align-items:center;gap:8px;font-size:.75rem;font-weight:600;display:flex}.message-bubble .status-indicator .dot{background:var(--accent-hover);width:8px;height:8px;box-shadow:0 0 10px var(--accent-hover);border-radius:50%}.message-bubble{border-radius:12px;font-size:.95rem;line-height:1.4;position:relative;box-shadow:0 2px 5px #0003}.message-row.in .message-bubble{background:var(--chat-bubble-in);border-bottom-left-radius:2px}.message-row.out .message-bubble{background:var(--chat-bubble-out);border-bottom-right-radius:2px}.message-time{color:#667781;text-align:right;margin-top:5px;font-size:.7rem}.composer{gap:15px;padding:20px;display:flex}.composer-input{border:1px solid var(--border-color);color:var(--text-primary);background:#fff;border-radius:8px;outline:none;flex:1;padding:12px 20px}.send-btn{background:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:45px;height:45px;transition:transform .2s;display:flex}.send-btn:hover{background:var(--accent-hover);transform:scale(1.05)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#30363d;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#484f58}.scroll-to-bottom-btn{background:var(--panel-bg);color:var(--text-secondary);border:1px solid var(--border-color);cursor:pointer;z-index:100;border-radius:50%;justify-content:center;align-items:center;width:45px;height:45px;transition:all .2s;display:flex;position:absolute;bottom:90px;right:30px;box-shadow:0 4px 8px #00000026}.scroll-to-bottom-btn:hover{color:var(--text-primary);background:#fff;transform:scale(1.1)}.composer-container{background:var(--panel-bg);border-top:1px solid var(--border-color);flex-direction:column;display:flex}.image-preview-wrapper{padding:15px 20px 0}.image-preview-inner{display:inline-block;position:relative}.preview-thumb{border:1px solid var(--border-color);border-radius:8px;max-height:100px;display:block}.remove-preview-btn{color:#fff;cursor:pointer;background:#f44;border:none;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:16px;display:flex;position:absolute;top:-10px;right:-10px;box-shadow:0 2px 5px #0003}.attach-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;transition:color .2s;display:flex}.attach-btn:hover{color:var(--accent-hover)}.login-wrapper{background:linear-gradient(135deg,#00a884 0%,#005a4a 100%);justify-content:center;align-items:center;width:100vw;height:100vh;animation:.5s ease-out fadeIn;display:flex}@keyframes fadeIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.login-card{text-align:center;background:#fff;border-radius:20px;width:100%;max-width:400px;padding:40px;box-shadow:0 15px 35px #0003}.login-logo{margin-bottom:15px;font-size:3rem}.login-header h1{color:var(--text-primary);margin-bottom:8px;font-size:1.8rem}.login-header p{color:var(--text-secondary);margin-bottom:30px;font-size:.95rem}.form-group{text-align:left;margin-bottom:20px}.form-group label{color:var(--text-secondary);margin-bottom:8px;font-size:.85rem;font-weight:600;display:block}.form-group input{border:1px solid var(--border-color);border-radius:10px;outline:none;width:100%;padding:12px 15px;font-size:1rem;transition:border-color .2s}.form-group input:focus{border-color:var(--accent-color)}.auth-error{color:#e53e3e;background:#fff5f5;border:1px solid #fed7d7;border-radius:8px;margin-bottom:20px;padding:10px;font-size:.85rem}.login-btn{background:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:10px;width:100%;padding:14px;font-size:1rem;font-weight:600;transition:background .2s,transform .1s}.login-btn:hover{background:var(--accent-hover)}.login-btn:active{transform:scale(.98)}.login-footer{color:var(--text-secondary);opacity:.7;margin-top:30px;font-size:.8rem}.logout-btn-header{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;transition:background .2s,color .2s;display:flex}.logout-btn-header:hover{color:#f44;background:#0000000d}