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.strategy-radio:after{content:"";width:5px;height:5px;border-radius:50%;background:#fff}.strategy-text{flex:1}.strategy-name{font-size:13px;font-weight:500;color:var(--text-primary)}.strategy-desc{font-size:11px;color:var(--text-secondary);margin-top:2px}.params-grid{display:flex;flex-direction:column;gap:10px;margin-top:12px;padding:12px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm)}.param-row{display:flex;align-items:center;gap:10px}.param-label{font-size:12px;color:var(--text-secondary);width:110px;flex-shrink:0}.param-input{flex:1;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:5px 8px;color:var(--text-primary);font-size:12px;outline:none;transition:border-color .15s}.param-input:focus{border-color:var(--border-focus)}.param-value{font-size:12px;color:var(--accent-hover);width:36px;text-align:right;flex-shrink:0}.chunk-preview{display:flex;flex-direction:column;gap:6px;margin-top:10px}.chunk-preview-item{padding:8px 10px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:11px;color:var(--text-secondary);line-height:1.5}.chunk-preview-label{font-size:10px;font-weight:600;color:var(--accent-hover);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}.embed-section{display:flex;flex-direction:column;gap:10px}.embed-btn{width:100%;padding:12px;background:var(--accent);border:none;border-radius:var(--radius-md);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;gap:8px}.embed-btn:hover:not(:disabled){background:var(--accent-hover);box-shadow:0 0 20px var(--accent-glow)}.embed-btn:disabled{opacity:.4;cursor:not-allowed}.progress-wrap{display:flex;flex-direction:column;gap:6px}.progress-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-secondary)}.progress-bar-bg{height:5px;background:var(--bg-elevated);border-radius:99px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-hover));border-radius:99px;transition:width .3s ease}.status-msg{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:var(--radius-sm);font-size:12px}.status-msg.success{background:var(--success-dim);color:var(--success);border:1px solid rgba(34,197,94,.2)}.status-msg.error{background:var(--error-dim);color:var(--error);border:1px solid rgba(239,68,68,.2)}.status-msg.loading{background:var(--accent-dim);color:var(--accent-hover);border:1px solid rgba(91,91,214,.2)}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:14px;height:14px;border:2px solid transparent;border-top-color:currentColor;border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.chat-panel{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-base)}.chat-header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;background:var(--bg-panel)}.chat-header-title{display:flex;align-items:center;gap:10px}.chat-header-title h1{font-size:15px;font-weight:600;letter-spacing:-.02em}.model-selector{display:flex;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:2px;gap:2px}.model-btn{padding:4px 10px;background:none;border:none;border-radius:4px;color:var(--text-secondary);font-size:12px;font-weight:500;cursor:pointer;transition:all .15s;white-space:nowrap}.model-btn.active{background:var(--accent);color:#fff}.model-btn:hover:not(.active){color:var(--text-primary);background:var(--bg-elevated)}.model-badge{font-size:11px;padding:3px 8px;background:var(--accent-dim);color:var(--accent-hover);border-radius:99px;font-weight:500;border:1px solid rgba(91,91,214,.2)}.doc-badge{font-size:11px;padding:3px 8px;background:var(--success-dim);color:var(--success);border-radius:99px;font-weight:500;max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.messages-area{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.message{display:flex;gap:12px;max-width:820px}.message.user{flex-direction:row-reverse;align-self:flex-end}.message-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;margin-top:2px}.message.assistant .message-avatar{background:var(--accent-dim);border:1px solid rgba(91,91,214,.25)}.message.user .message-avatar{background:var(--bg-elevated);border:1px solid var(--border)}.message-body{display:flex;flex-direction:column;gap:6px;max-width:calc(100% - 44px)}.message-bubble{padding:12px 15px;border-radius:var(--radius-md);font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word}.message.assistant .message-bubble{background:var(--bg-panel);border:1px solid var(--border);color:var(--text-primary);border-top-left-radius:4px}.message.user .message-bubble{background:var(--accent);color:#fff;border-top-right-radius:4px}.message.error .message-bubble{background:var(--error-dim);border-color:#ef444433;color:var(--error)}.message-sources{display:flex;flex-wrap:wrap;gap:5px}.source-chip{font-size:10px;padding:2px 8px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:99px;color:var(--text-muted);max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-input-area{padding:16px 20px;border-top:1px solid var(--border);background:var(--bg-panel);flex-shrink:0}.chat-input-wrap{display:flex;align-items:flex-end;gap:10px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-lg);padding:10px 14px;transition:border-color .15s}.chat-input-wrap:focus-within{border-color:var(--border-focus)}.chat-input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:14px;resize:none;line-height:1.5;max-height:140px;font-family:inherit}.chat-input::placeholder{color:var(--text-muted)}.send-btn{width:34px;height:34px;background:var(--accent);border:none;border-radius:var(--radius-sm);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;flex-shrink:0}.send-btn:hover:not(:disabled){background:var(--accent-hover)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.chat-input-hint{font-size:11px;color:var(--text-muted);margin-top:8px;text-align:center}.typing-dots{display:flex;align-items:center;gap:4px;padding:14px 15px}.typing-dot{width:6px;height:6px;background:var(--text-muted);border-radius:50%;animation:bounce 1.2s ease-in-out infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-5px)}}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--text-secondary);padding:40px}.empty-state-icon{font-size:40px;opacity:.6}.empty-state h3{font-size:16px;font-weight:600;color:var(--text-primary)}.empty-state p{font-size:13px;text-align:center;max-width:280px;line-height:1.6;color:var(--text-secondary)}.sample-prompts{display:flex;flex-direction:column;gap:8px;margin-top:8px;width:100%;max-width:420px}.sample-prompt-btn{padding:10px 14px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:13px;text-align:left;cursor:pointer;transition:all .15s;line-height:1.4}.sample-prompt-btn:hover:not(:disabled){border-color:var(--accent);color:var(--text-primary);background:var(--accent-dim)}.sample-prompt-btn:disabled{opacity:.55;color:var(--text-secondary);cursor:default}.btn-sm{padding:6px 12px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:12px;cursor:pointer;transition:all .15s}.btn-sm:hover{border-color:var(--accent);background:var(--accent-dim)}.divider{height:1px;background:var(--border);margin:4px 0}