.chat{height:100%;display:flex;flex-direction:column;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.chat-header{display:flex;align-items:center;gap:10px;padding:20px 24px;border-bottom:1px solid var(--border);font-weight:600;font-size:17px}.status-dot{width:10px;height:10px;background:var(--success);border-radius:50%}.test-panel{display:flex;align-items:center;gap:12px;padding:12px 24px;background:#fef3c7;border-bottom:1px solid #fcd34d}.test-label{font-size:13px;font-weight:600;color:#92400e;white-space:nowrap}.test-buttons{display:flex;gap:8px;flex-wrap:wrap}.test-btn{padding:6px 12px;background:#fff;border:1px solid #fcd34d;border-radius:6px;font-size:12px;font-weight:500;color:#92400e;cursor:pointer;transition:all .15s}.test-btn:hover:not(:disabled){background:#fef3c7;border-color:#f59e0b}.test-btn:disabled{opacity:.5;cursor:not-allowed}.messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:20px}.message{max-width:75%}.message.user{align-self:flex-end}.message.assistant,.message.error{align-self:flex-start}.message-content{padding:16px 20px;border-radius:var(--radius);font-size:16px;line-height:1.6}.message.user .message-content{background:var(--accent);color:#fff}.message.assistant .message-content{background:var(--bg-tertiary);color:var(--text-primary)}.message.error .message-content{background:#fef2f2;color:var(--error);border:1px solid #fecaca}.failed-badge{display:block;margin-top:10px;padding:6px 10px;background:#fff;border-radius:6px;font-size:13px;font-weight:500;text-transform:capitalize}.message-meta{margin-top:6px;font-size:13px;color:var(--text-muted)}.message-content.loading{display:flex;gap:6px;padding:20px}.message-content.loading 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16px;font-size:15px;gap:8px}.status-dot{width:8px;height:8px}.test-panel{flex-direction:column;align-items:flex-start;gap:8px;padding:10px 12px}.test-label{font-size:12px}.test-buttons{gap:6px;width:100%}.test-btn{padding:5px 8px;font-size:11px;flex:1;min-width:fit-content;text-align:center}.messages{padding:14px;gap:14px}.message{max-width:88%}.message-content{padding:12px 14px;font-size:14px;line-height:1.5}.failed-badge{margin-top:8px;padding:4px 8px;font-size:11px}.message-meta{font-size:11px}.message-content.loading{padding:14px}.message-content.loading span{width:6px;height:6px}.input-area{gap:10px;padding:12px}.input-area input{padding:12px 14px;font-size:15px}.input-area button{padding:12px 18px;font-size:14px}}@media (max-width: 480px){.chat-header{padding:12px 14px;font-size:14px}.test-panel{padding:8px 10px}.test-buttons{gap:4px}.test-btn{padding:4px 6px;font-size:10px;border-radius:4px}.messages{padding:10px;gap:12px}.message{max-width:92%}.message-content{padding:10px 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auto;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:12px;font-weight:600;font-size:22px}.logo-icon{color:var(--accent);font-size:26px}.header-actions{display:flex;align-items:center;gap:12px}.github-link{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--radius);color:var(--text-secondary);text-decoration:none;border:1px solid transparent;background:transparent;font-size:14px;transition:all .15s}.github-link:hover{border-color:var(--border);background:var(--bg-tertiary);color:var(--accent)}.github-icon{width:18px;height:18px;fill:currentColor}.toggle-btn{padding:12px 24px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);font-size:15px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .15s}.toggle-btn:hover{background:var(--bg-secondary);border-color:var(--accent);color:var(--accent)}.toggle-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.main{flex:1;padding:32px;max-width:1600px;width:100%;margin:0 auto}.layout{display:flex;gap:32px;height:calc(100vh - 136px)}.layout:not(.split) .chat-panel{max-width:900px;margin:0 auto}.chat-panel,.architecture-panel{flex:1;min-width:0}@media (max-width: 1000px){.layout.split{flex-direction:column}.layout.split .chat-panel,.layout.split .architecture-panel{flex:none;height:50%}}@media (max-width: 768px){.header{padding:0 16px;height:60px}.logo{font-size:18px;gap:8px}.logo-icon{font-size:22px}.header-actions{gap:8px}.github-link{padding:8px 10px;font-size:13px}.github-link span{display:none}.github-icon{width:20px;height:20px}.toggle-btn{padding:10px 14px;font-size:13px}.main{padding:12px}.layout{gap:12px;height:calc(100vh - 84px)}.layout.split .chat-panel{height:55%}.layout.split .architecture-panel{height:45%}}@media (max-width: 480px){.header{padding:0 12px;height:56px}.logo{font-size:16px;gap:6px}.logo-icon{font-size:20px}.toggle-btn{padding:8px 12px;font-size:12px}.main{padding:8px}.layout{gap:8px;height:calc(100vh - 72px)}}:root{--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--border: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--accent: #2563eb;--accent-light: #3b82f6;--success: #16a34a;--error: #dc2626;--warning: #d97706;--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-secondary);color:var(--text-primary);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}#root{min-height:100vh}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}@media (max-width: 768px){body{font-size:15px;-webkit-tap-highlight-color:transparent;touch-action:manipulation}::-webkit-scrollbar{width:4px}input,textarea,select{font-size:16px!important}*{-webkit-overflow-scrolling:touch}}@media (max-width: 480px){body{font-size:14px}::-webkit-scrollbar{width:3px}}