:root{--tng-orange: #F26522;--tng-dark: #2D2926;--tng-light: #FFF7F0;--tng-gray: #F5F5F5;--tng-border: #E0E0E0;--tng-green: #28A745;--tng-red: #DC3545}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--tng-gray);color:var(--tng-dark);height:100dvh;display:flex;flex-direction:column}#root{display:flex;flex-direction:column;height:100%}.header{background:var(--tng-orange);color:#fff;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 8px #00000026;flex-shrink:0}.header-left{display:flex;align-items:center;gap:10px}.header h1{font-size:18px;font-weight:600}.header .logo{width:32px;height:32px;background:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--tng-orange);font-size:18px}.logo-clickable{cursor:pointer;transition:opacity .15s}.logo-clickable:hover{opacity:.8}.instance-select{background:#fff3;border:1px solid rgba(255,255,255,.4);color:#fff;padding:6px 10px;border-radius:6px;font-size:13px;cursor:pointer}.instance-select option{color:var(--tng-dark);background:#fff}.chat-area{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}.msg-wrapper{display:flex;flex-direction:column;gap:3px}.msg-wrapper--user{align-items:flex-end}.msg-wrapper--assistant{align-items:flex-start}.msg-wrapper--system{align-items:center}.msg-timestamp{font-size:11px;color:#b0b0b0;padding:0 6px;letter-spacing:.2px}.message{max-width:85%;padding:12px 16px;border-radius:16px;font-size:15px;line-height:1.5;word-wrap:break-word}.message.user{background:var(--tng-orange);color:#fff;border-bottom-right-radius:4px}.message.assistant{background:#fff;border:1px solid var(--tng-border);border-bottom-left-radius:4px}.message.assistant .content b{font-weight:600}.message.assistant .content ul{padding-left:20px;margin:6px 0}.message.assistant .content li{margin:3px 0}.message.system{align-self:center;background:#fff3cd;border:1px solid #FFEAA7;color:#856404;font-size:13px;padding:8px 16px;border-radius:8px}.msg-footer{margin-top:8px;padding-top:8px;border-top:1px solid var(--tng-border);display:flex;align-items:flex-start;justify-content:space-between;gap:8px}.sources-inline{flex:1;font-size:12px;color:#888;line-height:1.6}.sources-inline a{color:var(--tng-orange);text-decoration:none}.sources-inline a:hover{text-decoration:underline}.countdown-line{margin-top:5px;text-align:center;font-weight:600;font-size:12px}.feedback{display:flex;gap:4px;flex-shrink:0}.feedback-btn{background:none;border:1px solid var(--tng-border);border-radius:6px;padding:3px 8px;cursor:pointer;font-size:14px;transition:all .15s}.feedback-btn:hover{background:var(--tng-gray)}.feedback-btn.active-up{background:#e8f5e9;border-color:var(--tng-green)}.feedback-btn.active-down{background:#ffebee;border-color:var(--tng-red)}.feedback-btn.active-comment{background:#fff3e0;border-color:var(--tng-orange)}.feedback-comment-area{margin-top:8px;padding-top:8px;border-top:1px solid var(--tng-border)}.feedback-comment-area textarea{width:100%;border:1px solid var(--tng-border);border-radius:8px;padding:8px 12px;font-size:13px;font-family:inherit;resize:none;height:72px;outline:none;transition:border-color .15s;display:block;box-sizing:border-box}.feedback-comment-area textarea:focus{border-color:var(--tng-orange)}.feedback-comment-footer{display:flex;align-items:center;gap:6px;margin-top:6px}.feedback-char-count{font-size:11px;color:#aaa;flex:1}.btn-fc-cancel{padding:5px 14px;border-radius:6px;border:1px solid var(--tng-border);background:none;font-size:13px;cursor:pointer;color:#666}.btn-fc-cancel:hover{background:var(--tng-gray)}.btn-fc-submit{padding:5px 14px;border-radius:6px;border:none;background:var(--tng-orange);color:#fff;font-size:13px;cursor:pointer;transition:opacity .15s}.btn-fc-submit:hover{opacity:.85}.input-area{background:#fff;border-top:1px solid var(--tng-border);padding:12px 16px;flex-shrink:0}.file-preview{display:flex;gap:8px;margin-bottom:8px;flex-wrap:wrap}.file-chip{background:var(--tng-light);border:1px solid var(--tng-border);border-radius:6px;padding:4px 10px;font-size:12px;display:flex;align-items:center;gap:6px}.file-chip .remove{cursor:pointer;color:#999;font-size:14px;line-height:1}.file-chip .remove:hover{color:var(--tng-red)}.input-row{display:flex;gap:8px;align-items:flex-end}.input-row textarea{flex:1;border:1px solid var(--tng-border);border-radius:12px;padding:10px 14px;font-size:15px;font-family:inherit;resize:none;min-height:44px;max-height:120px;line-height:1.4;outline:none}.input-row textarea:focus{border-color:var(--tng-orange)}.btn-attach{width:44px;height:44px;background:var(--tng-gray);border:1px solid var(--tng-border);border-radius:50%;cursor:pointer;font-size:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.btn-attach:hover{background:var(--tng-border)}.btn-send{width:44px;height:44px;background:var(--tng-orange);border:none;border-radius:50%;color:#fff;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:opacity .15s}.btn-send:disabled{opacity:.5;cursor:not-allowed}.btn-send:not(:disabled):hover{opacity:.9}.typing{display:flex;gap:4px;padding:4px 0}.typing span{width:8px;height:8px;background:#ccc;border-radius:50%;animation:bounce 1.4s infinite ease-in-out}.typing span:nth-child(1){animation-delay:0s}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,80%,to{transform:scale(.6)}40%{transform:scale(1)}}.welcome{text-align:center;padding:40px 20px;color:#888}.welcome h2{color:var(--tng-orange);font-size:20px;margin-bottom:8px}.welcome p{font-size:14px;line-height:1.6}.dialog-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000}.dialog-box{background:#fff;border-radius:12px;padding:24px;max-width:400px;width:90%;box-shadow:0 8px 32px #0003}.dialog-box h3{margin-bottom:12px;font-size:16px}.dialog-box p{margin-bottom:20px;font-size:14px;color:#555;line-height:1.5}.dialog-buttons{display:flex;gap:10px;justify-content:flex-end}.dialog-buttons button{padding:8px 20px;border-radius:8px;border:none;font-size:14px;cursor:pointer}.dialog-buttons .cancel{background:var(--tng-gray);color:var(--tng-dark)}.dialog-buttons .confirm{background:var(--tng-orange);color:#fff}.login-wrapper{display:flex;align-items:center;justify-content:center;height:100%;background:linear-gradient(135deg,var(--tng-light) 0%,var(--tng-gray) 100%)}.login-card{background:#fff;border-radius:16px;padding:40px 36px 36px;width:100%;max-width:380px;box-shadow:0 8px 32px #0000001a}.login-card .login-logo{width:56px;height:56px;background:var(--tng-orange);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:28px;margin:0 auto 16px}.login-card h2{text-align:center;font-size:20px;margin-bottom:4px}.login-card .login-subtitle{text-align:center;font-size:13px;color:#888;margin-bottom:28px}.login-field{margin-bottom:16px}.login-field label{display:block;font-size:13px;font-weight:500;margin-bottom:5px;color:#555}.login-field input{width:100%;padding:10px 14px;border:1px solid var(--tng-border);border-radius:8px;font-size:15px;font-family:inherit;outline:none;transition:border-color .15s}.login-field input:focus{border-color:var(--tng-orange)}.login-field input:disabled{background:var(--tng-gray);cursor:not-allowed}.login-error{color:var(--tng-red);font-size:13px;margin-bottom:12px;min-height:18px}.login-btn{width:100%;padding:12px;background:var(--tng-orange);color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .15s}.login-btn:hover:not(:disabled){opacity:.9}.login-btn:disabled{opacity:.5;cursor:not-allowed}.admin-page{display:flex;flex-direction:column;height:100%;overflow:hidden}.admin-tabs{display:flex;background:#fff;border-bottom:2px solid var(--tng-border);flex-shrink:0}.admin-tab{padding:12px 24px;cursor:pointer;font-size:14px;font-weight:500;color:#888;border-bottom:3px solid transparent;margin-bottom:-2px;transition:color .15s}.admin-tab:hover{color:var(--tng-orange)}.admin-tab.active{border-bottom-color:var(--tng-orange);color:var(--tng-orange)}.admin-filters{background:#fff;padding:10px 16px;border-bottom:1px solid var(--tng-border);display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;flex-shrink:0}.filter-field{display:flex;flex-direction:column;gap:3px}.filter-field label{font-size:11px;font-weight:600;color:#888;text-transform:uppercase;letter-spacing:.4px}.filter-field input,.filter-field select{padding:5px 8px;border:1px solid var(--tng-border);border-radius:6px;font-size:13px;font-family:inherit;outline:none;width:120px;transition:border-color .15s}.filter-field input:focus,.filter-field select:focus{border-color:var(--tng-orange)}.filter-field input[type=number]{width:72px}.filter-field select{width:110px}.filter-field .wide{width:160px}.filter-clear-btn{padding:6px 14px;background:var(--tng-gray);border:1px solid var(--tng-border);border-radius:6px;cursor:pointer;font-size:13px;align-self:flex-end}.filter-clear-btn:hover{background:var(--tng-border)}.filter-refresh-btn{padding:6px 14px;background:var(--tng-gray);border:1px solid var(--tng-border);border-radius:6px;cursor:pointer;font-size:13px;align-self:flex-end}.filter-refresh-btn:hover:not(:disabled){background:var(--tng-border)}.filter-refresh-btn:disabled{opacity:.5;cursor:default}.filter-export-btn{padding:6px 14px;background:var(--tng-orange);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:13px;align-self:flex-end}.filter-export-btn:hover:not(:disabled){opacity:.85}.filter-export-btn:disabled{opacity:.5;cursor:default}.admin-table-wrap{flex:1;overflow:auto}.admin-table{width:100%;border-collapse:collapse;font-size:13px;min-width:900px}.admin-table thead th{background:var(--tng-orange);color:#fff;padding:9px 11px;text-align:left;white-space:nowrap;position:sticky;top:0;z-index:1;font-weight:600}.admin-table thead th.sortable{cursor:pointer;-webkit-user-select:none;user-select:none}.admin-table thead th.sortable:hover{background:#d9581c}.admin-table tbody td{padding:7px 11px;border-bottom:1px solid var(--tng-border);max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:top}.admin-table tbody td.wrap{white-space:normal;max-width:260px;line-height:1.4}.admin-table tbody td.session{max-width:none;overflow:visible;font-family:monospace;-webkit-user-select:all;user-select:all}.admin-table tbody tr:hover td{background:var(--tng-light)}.admin-null{color:#ccc}.role-badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600;color:#fff}.role-user{background:var(--tng-orange)}.role-assistant{background:#4caf50}.admin-pagination{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:#fff;border-top:1px solid var(--tng-border);font-size:13px;color:#555;flex-shrink:0}.page-controls{display:flex;gap:6px;align-items:center}.page-btn{padding:4px 10px;border:1px solid var(--tng-border);border-radius:6px;background:#fff;cursor:pointer;font-size:13px;transition:background .1s}.page-btn:hover:not(:disabled){background:var(--tng-gray)}.page-btn:disabled{opacity:.4;cursor:not-allowed}.page-size-sel{padding:4px 8px;border:1px solid var(--tng-border);border-radius:6px;font-size:13px;font-family:inherit}.admin-back-btn{background:#fff3;border:1px solid rgba(255,255,255,.5);color:#fff;padding:6px 14px;border-radius:6px;cursor:pointer;font-size:13px;font-family:inherit;transition:background .15s}.admin-back-btn:hover{background:#ffffff4d}.admin-loading{text-align:center;padding:32px;color:#888}@media (max-width: 600px){.message{max-width:92%}.header h1{font-size:16px}.login-card{margin:0 16px;padding:32px 24px 28px}}