:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #242424;--bg-hover: #2a2a2a;--bg-active: #333333;--text-primary: #e8e8e8;--text-secondary: #a0a0a0;--text-muted: #666666;--border: #2a2a2a;--accent: #6366f1;--accent-hover: #5558e6;--accent-subtle: rgba(99, 102, 241, .1);--danger: #ef4444;--danger-hover: #dc2626;--success: #22c55e;--radius: 8px;--radius-lg: 12px;--shadow: 0 4px 24px rgba(0, 0, 0, .4);--transition: .15s ease;--sidebar-width: 280px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}.app{display:flex;height:100%;width:100%}.loading-screen{display:flex;align-items:center;justify-content:center;height:100%;background:var(--bg-primary)}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.spin{animation:spin 1s linear infinite}.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition);white-space:nowrap}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-full{width:100%;justify-content:center}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:var(--radius);background:transparent;color:var(--text-secondary);cursor:pointer;transition:all var(--transition);flex-shrink:0}.btn-icon:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-icon.active{background:var(--accent-subtle);color:var(--accent)}.btn-icon.btn-danger:hover{background:#ef44441a;color:var(--danger)}.login-container{display:flex;align-items:center;justify-content:center;height:100%;background:var(--bg-primary);padding:20px}.login-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:400px;box-shadow:var(--shadow)}.login-header{text-align:center;margin-bottom:32px;color:var(--accent)}.login-header h1{font-size:24px;margin-top:12px;color:var(--text-primary)}.login-header p{color:var(--text-secondary);font-size:14px;margin-top:4px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:14px;font-family:inherit;transition:border-color var(--transition)}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent)}.form-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.error-message{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--danger);padding:10px 14px;border-radius:var(--radius);font-size:13px;margin-bottom:16px}.success-message{background:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:var(--success);padding:10px 14px;border-radius:var(--radius);font-size:13px;margin-bottom:16px}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);height:100%;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-overlay{display:none}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 12px}.sidebar-header h2{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:600;color:var(--text-primary)}.mobile-close{display:none}.btn-new-chat{margin:0 12px 12px;background:var(--accent);color:#fff;justify-content:center;padding:10px}.btn-new-chat:hover{background:var(--accent-hover)}.conversation-list{flex:1;overflow-y:auto;padding:0 8px}.conversation-list::-webkit-scrollbar{width:4px}.conversation-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.conversation-item{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:var(--radius);cursor:pointer;transition:background var(--transition);margin-bottom:2px}.conversation-item:hover{background:var(--bg-hover)}.conversation-item.active{background:var(--bg-active)}.conversation-title{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-item .btn-delete{opacity:0;width:28px;height:28px}.conversation-item:hover .btn-delete{opacity:1}.no-conversations{text-align:center;color:var(--text-muted);font-size:13px;padding:20px}.sidebar-footer{padding:12px;border-top:1px solid var(--border)}.btn-sidebar{width:100%;background:transparent;color:var(--text-secondary);justify-content:flex-start;padding:8px 12px;font-size:13px}.btn-sidebar:hover{background:var(--bg-hover);color:var(--text-primary)}.user-info{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;margin-top:4px;font-size:13px;color:var(--text-secondary)}.chat-view{flex:1;display:flex;flex-direction:column;height:100%;overflow:hidden;background:var(--bg-primary)}.chat-header{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--bg-secondary);min-height:56px}.chat-header h3{flex:1;font-size:15px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mobile-menu{display:none}.chat-config{padding:16px 20px;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.config-row{margin-bottom:12px}.config-row:last-child{margin-bottom:0}.config-row label{display:block;font-size:12px;font-weight:500;color:var(--text-secondary);margin-bottom:4px;text-transform:uppercase;letter-spacing:.5px}.config-row select,.config-row textarea{width:100%;padding:8px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:13px;font-family:inherit;resize:vertical}.config-row select:focus,.config-row textarea:focus{outline:none;border-color:var(--accent)}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted)}.chat-empty h2{font-size:22px;color:var(--text-secondary);margin-bottom:8px}.chat-empty p{font-size:14px}.chat-messages{flex:1;overflow-y:auto;padding:20px}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.message{max-width:800px;margin:0 auto 20px;padding:0 20px}.message-role{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;color:var(--text-muted)}.message.user .message-role{color:var(--accent)}.message.assistant .message-role{color:var(--success)}.message-content{font-size:15px;line-height:1.7;color:var(--text-primary)}.message-content p{margin-bottom:12px}.message-content p:last-child{margin-bottom:0}.message-content pre{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);padding:14px;overflow-x:auto;margin:12px 0;font-size:13px}.message-content code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-size:13px}.message-content pre code{background:none;padding:0}.message-content ul,.message-content ol{margin:8px 0;padding-left:24px}.message-content li{margin-bottom:4px}.message-content blockquote{border-left:3px solid var(--accent);padding-left:16px;color:var(--text-secondary);margin:12px 0}.message-content h1,.message-content h2,.message-content h3{margin:16px 0 8px}.thinking{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-style:italic}.chat-input-form{display:flex;align-items:flex-end;gap:8px;padding:16px 20px;border-top:1px solid var(--border);background:var(--bg-secondary);max-width:840px;margin:0 auto;width:100%}.chat-input-form textarea{flex:1;padding:10px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:14px;font-family:inherit;resize:none;line-height:1.5;max-height:200px;min-height:42px}.chat-input-form textarea:focus{outline:none;border-color:var(--accent)}.chat-input-form textarea:disabled{opacity:.5}.btn-send{background:var(--accent);color:#fff;width:42px;height:42px;padding:0;justify-content:center;border-radius:var(--radius);flex-shrink:0}.btn-send:hover:not(:disabled){background:var(--accent-hover)}.btn-send:disabled{opacity:.3;cursor:not-allowed}.modal-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow)}.modal-wide{max-width:600px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 16px;border-bottom:1px solid var(--border)}.modal-header h2{font-size:18px}.modal-body{padding:24px}.settings-section{margin-bottom:24px}.settings-section:last-child{margin-bottom:0}.settings-section h3{font-size:14px;font-weight:600;color:var(--text-secondary);margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.settings-info{font-size:14px;color:var(--text-secondary)}.user-list{display:flex;flex-direction:column;gap:8px}.user-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--bg-tertiary);border-radius:var(--radius)}.user-item strong{font-size:14px}.user-meta{display:block;font-size:12px;color:var(--text-muted)}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;z-index:50;transform:translate(-100%);transition:transform .2s ease;box-shadow:var(--shadow)}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block;position:fixed;inset:0;background:#00000080;z-index:40}.mobile-close,.mobile-menu{display:flex}.chat-header{padding:12px 14px}.chat-messages{padding:12px}.message{padding:0 4px}.chat-input-form,.chat-config{padding:12px 14px}.form-row{grid-template-columns:1fr}.modal{max-width:100%;margin:10px}}.modal-admin{max-width:760px;width:100%}.admin-tabs{display:flex;gap:4px;padding:0 24px;border-bottom:1px solid var(--border);background:var(--bg-secondary)}.admin-tab{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition);margin-bottom:-1px}.admin-tab:hover{color:var(--text-primary)}.admin-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.admin-conv-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.admin-conv-count{display:inline-block;margin-left:8px;padding:1px 8px;background:var(--bg-tertiary);border-radius:99px;font-size:11px;font-weight:600;color:var(--text-muted);vertical-align:middle}.admin-conv-loading{display:flex;justify-content:center;padding:32px 0}.admin-conv-table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);margin-top:4px}.admin-conv-table{width:100%;border-collapse:collapse;font-size:13px}.admin-conv-table thead tr{background:var(--bg-tertiary)}.admin-conv-table th{padding:10px 14px;text-align:left;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);white-space:nowrap}.admin-conv-table td{padding:10px 14px;border-top:1px solid var(--border);vertical-align:top}.admin-conv-table tbody tr:hover td{background:var(--bg-hover)}.admin-conv-title{max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-primary)}.admin-conv-user{display:block;font-weight:500;color:var(--text-primary)}.admin-conv-count-cell{text-align:center;color:var(--text-secondary)}.admin-conv-date{white-space:nowrap;color:var(--text-muted);font-size:12px}.user-item-col{flex-direction:column;align-items:stretch;gap:0}.user-item-row{display:flex;align-items:center;justify-content:space-between;width:100%}.user-item-info{display:flex;flex-direction:column}.user-item-actions{display:flex;align-items:center;gap:4px;flex-shrink:0}.reset-pw-form{display:flex;align-items:center;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border);flex-wrap:wrap}.reset-pw-form input[type=password]{flex:1;min-width:140px;padding:7px 10px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:13px;font-family:inherit}.reset-pw-form input[type=password]:focus{outline:none;border-color:var(--accent)}.reset-pw-error{width:100%;font-size:12px;color:var(--danger)}.btn-sm{padding:6px 12px;font-size:13px}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.conv-row-deleted td{opacity:.6}.badge{display:inline-block;padding:1px 7px;border-radius:99px;font-size:11px;font-weight:600;vertical-align:middle;margin-left:6px;white-space:nowrap}.badge-deleted{background:#dc354526;color:#e05c6a;border:1px solid rgba(220,53,69,.3)}.conv-title-cell{display:flex;align-items:center;gap:4px;flex-wrap:wrap}.btn-icon-sm{width:22px;height:22px;min-width:22px}.conv-detail-row td{padding:0!important;border-top:none!important}.conv-detail{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);margin:4px 0 8px;padding:12px 16px;max-height:360px;overflow-y:auto}.conv-detail-header{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:10px}.conv-detail-msg{padding:8px 10px;border-radius:var(--radius);margin-bottom:6px;background:var(--bg-tertiary)}.conv-detail-msg--user{background:#6366f114}.conv-detail-msg--assistant{background:var(--bg-tertiary)}.conv-detail-msg--system{background:#eab30814;border:1px solid rgba(234,179,8,.2)}.conv-detail-role{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.4px;color:var(--text-muted);margin-bottom:3px}.conv-detail-content{margin:0;font-size:13px;color:var(--text-primary);white-space:pre-wrap;word-break:break-word;line-height:1.5}.conv-detail-time{display:block;font-size:11px;color:var(--text-muted);margin-top:4px;text-align:right}.toggle-label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none}.toggle-label input[type=checkbox]{width:14px;height:14px;accent-color:var(--accent);cursor:pointer}