:root{--sidebar-bg: #1a1d23;--sidebar-hover: #23272f;--sidebar-active: #2d3240;--sidebar-border: #2a2e38;--sidebar-text: #a0a8b8;--sidebar-text-dim: #5a6170;--chat-bg: #f5f6f8;--chat-header-bg: #ffffff;--chat-border: #e4e7ed;--bubble-mine: #2563eb;--bubble-mine-text: #ffffff;--bubble-theirs: #ffffff;--bubble-theirs-text: #1a1d23;--bubble-shadow: 0 1px 2px rgba(0,0,0,.08);--accent: #2563eb;--accent-hover: #1d4ed8;--error: #dc2626;--avatar-bg: #2563eb;--avatar-text: #ffffff;--text-primary: #1a1d23;--text-secondary: #5a6170;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 18px;--radius-full: 999px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);font-size:14px;line-height:1.5;background:var(--sidebar-bg);color:var(--text-primary);-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;background:none;font:inherit}ul{list-style:none}textarea{font:inherit;resize:none}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:240px;min-width:240px;background:var(--sidebar-bg);display:flex;flex-direction:column;border-right:1px solid var(--sidebar-border);overflow:hidden}.sidebar-header{display:flex;align-items:center;gap:10px;padding:18px 16px 14px;border-bottom:1px solid var(--sidebar-border)}.sidebar-logo{width:32px;height:32px;background:var(--accent);color:#fff;border-radius:var(--radius-sm);font-size:11px;font-weight:700;letter-spacing:.5px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.sidebar-title{font-size:14px;font-weight:600;color:#fff}.sidebar-section-label{padding:16px 16px 6px;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--sidebar-text-dim)}.cabinet-list{flex:1;overflow-y:auto;padding:4px 8px}.cabinet-list::-webkit-scrollbar{width:4px}.cabinet-list::-webkit-scrollbar-track{background:transparent}.cabinet-list::-webkit-scrollbar-thumb{background:var(--sidebar-border);border-radius:4px}.cabinet-row{width:100%;display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--radius-md);color:var(--sidebar-text);transition:background .15s ease;text-align:left}.cabinet-row:hover{background:var(--sidebar-hover)}.cabinet-row.active{background:var(--sidebar-active);color:#fff}.cabinet-avatar{width:36px;height:36px;background:var(--avatar-bg);color:var(--avatar-text);border-radius:var(--radius-full);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0}.cabinet-avatar-wrap{position:relative;flex-shrink:0}.status-dot{position:absolute;bottom:0;right:0;width:10px;height:10px;border-radius:50%;background:#4b5563;border:2px solid var(--sidebar-bg)}.status-dot.online{background:#22c55e}.cabinet-avatar.sm{width:28px;height:28px;font-size:11px}.cabinet-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}.cabinet-name{font-size:13px;font-weight:500;color:inherit;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cabinet-preview{font-size:11px;color:var(--sidebar-text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cabinet-row.active .cabinet-preview{color:#ffffff80}.delete-chat-btn{width:24px;height:24px;border-radius:var(--radius-sm);color:var(--sidebar-text-dim);display:flex;align-items:center;justify-content:center;flex-shrink:0;opacity:0;transition:opacity .15s,background .15s,color .15s}.cabinet-row:hover .delete-chat-btn{opacity:1}.delete-chat-btn:hover{background:#dc262626;color:var(--error)}.unread-badge{background:var(--accent);color:#fff;font-size:11px;font-weight:600;min-width:18px;height:18px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;padding:0 5px;flex-shrink:0}.sidebar-footer{display:flex;align-items:center;gap:8px;padding:12px 12px 16px;border-top:1px solid var(--sidebar-border)}.my-cabinet-info{flex:1;display:flex;align-items:center;gap:8px;min-width:0}.my-cabinet-label{font-size:12px;font-weight:500;color:var(--sidebar-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.logout-btn{width:30px;height:30px;border-radius:var(--radius-sm);color:var(--sidebar-text-dim);display:flex;align-items:center;justify-content:center;transition:background .15s,color .15s;flex-shrink:0}.logout-btn:hover{background:var(--sidebar-hover);color:var(--error)}.autostart-toggle{width:30px;height:30px;border-radius:var(--radius-sm);color:var(--sidebar-text-dim);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s,color .15s;flex-shrink:0}.autostart-toggle input{display:none}.autostart-toggle:hover{background:var(--sidebar-hover);color:var(--sidebar-text)}.autostart-toggle:has(input:checked){color:#22c55e}.chat-area{flex:1;display:flex;flex-direction:column;background:var(--chat-bg);min-width:0;overflow:hidden}.chat-header{display:flex;align-items:center;gap:12px;padding:14px 20px;background:var(--chat-header-bg);border-bottom:1px solid var(--chat-border);box-shadow:0 1px 3px #0000000d}.chat-header-name{font-size:15px;font-weight:600;color:var(--text-primary)}.messages-area{flex:1;overflow-y:auto;padding:20px 20px 8px;display:flex;flex-direction:column;gap:2px}.messages-area::-webkit-scrollbar{width:5px}.messages-area::-webkit-scrollbar-track{background:transparent}.messages-area::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:4px}.date-separator{display:flex;align-items:center;gap:10px;margin:14px 0 10px;color:var(--text-secondary);font-size:11px}.date-separator:before,.date-separator:after{content:"";flex:1;height:1px;background:var(--chat-border)}.bubble-row{display:flex;justify-content:flex-start;margin-bottom:4px}.bubble-row.mine{justify-content:flex-end}.bubble{max-width:65%;padding:9px 13px;border-radius:var(--radius-lg);box-shadow:var(--bubble-shadow);display:flex;flex-direction:column;gap:4px}.bubble-theirs{background:var(--bubble-theirs);color:var(--bubble-theirs-text);border-bottom-left-radius:var(--radius-sm)}.bubble-mine{background:var(--bubble-mine);color:var(--bubble-mine-text);border-bottom-right-radius:var(--radius-sm)}.bubble-sender{font-size:10px;font-weight:600;opacity:.65;letter-spacing:.02em}.bubble-text{font-size:14px;line-height:1.5;word-break:break-word;white-space:pre-wrap}.bubble-time{font-size:10px;opacity:.6;align-self:flex-end}.no-messages{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:13px}.compose-bar{display:flex;align-items:flex-end;gap:10px;padding:12px 16px 14px;background:var(--chat-header-bg);border-top:1px solid var(--chat-border)}.compose-input{flex:1;padding:10px 14px;border:1.5px solid var(--chat-border);border-radius:var(--radius-full);background:var(--chat-bg);color:var(--text-primary);font-size:14px;line-height:1.5;max-height:120px;overflow-y:auto;transition:border-color .15s;outline:none}.compose-input:focus{border-color:var(--accent)}.compose-input::placeholder{color:#a0aec0}.send-btn{width:40px;height:40px;background:var(--accent);color:#fff;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s,transform .1s}.send-btn:hover:not(:disabled){background:var(--accent-hover)}.send-btn:active:not(:disabled){transform:scale(.94)}.send-btn:disabled{background:#c7d2fe;cursor:not-allowed}.offline-notice{margin:8px 20px 0;padding:8px 14px;background:#fef3c7;color:#92400e;border-radius:var(--radius-md);font-size:12px;font-weight:500;text-align:center}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-secondary)}.empty-icon{width:72px;height:72px;background:var(--chat-header-bg);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#c4cad4;box-shadow:0 2px 8px #0000000f}.empty-title{font-size:16px;font-weight:600;color:var(--text-primary)}.empty-desc{font-size:13px;color:var(--text-secondary);text-align:center;max-width:260px}.login-screen{min-height:100vh;background:var(--sidebar-bg);display:flex;align-items:center;justify-content:center;padding:24px}.login-card{background:#22262e;border:1px solid var(--sidebar-border);border-radius:var(--radius-lg);padding:32px;width:100%;max-width:400px;display:flex;flex-direction:column;gap:20px;box-shadow:0 8px 32px #0000004d}.login-header{display:flex;flex-direction:column;align-items:center;gap:8px}.login-logo{width:48px;height:48px;background:var(--accent);color:#fff;border-radius:var(--radius-md);font-size:14px;font-weight:700;letter-spacing:.5px;display:flex;align-items:center;justify-content:center}.login-title{font-size:20px;font-weight:700;color:#fff}.login-subtitle{font-size:13px;color:var(--sidebar-text);text-align:center}.cabinet-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.cabinet-tile{aspect-ratio:1;border-radius:var(--radius-md);background:var(--sidebar-hover);border:1.5px solid transparent;color:var(--sidebar-text);font-size:15px;font-weight:600;transition:background .15s,border-color .15s,color .15s}.cabinet-tile:hover{background:var(--sidebar-active);color:#fff}.cabinet-tile.selected{background:var(--accent);border-color:var(--accent);color:#fff}.login-field{display:flex;flex-direction:column;gap:6px}.login-label{font-size:12px;font-weight:500;color:var(--sidebar-text)}.login-input{padding:10px 14px;background:var(--sidebar-hover);border:1.5px solid var(--sidebar-border);border-radius:var(--radius-md);color:#fff;font-size:15px;outline:none;transition:border-color .15s;letter-spacing:.15em}.login-input:focus{border-color:var(--accent)}.login-input::placeholder{letter-spacing:.05em;color:var(--sidebar-text-dim)}.login-error{font-size:13px;color:var(--error);text-align:center}.btn-primary{width:100%;padding:11px;background:var(--accent);color:#fff;border-radius:var(--radius-md);font-size:14px;font-weight:600;transition:background .15s,opacity .15s}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}