:root,[data-theme=dark]{--bg: #212121;--bg-sidebar: #171717;--bg-card: #2a2a2a;--bg-input: #2f2f2f;--bg-hover: rgba(255,255,255,.06);--bg-user-bubble: #2f2f2f;--border: rgba(255,255,255,.1);--text: #ececec;--text-2: rgba(236,236,236,.7);--text-3: rgba(236,236,236,.4);--accent: #2ba5ce;--accent-bg: rgba(43,165,206,.12);--accent-border: rgba(43,165,206,.28);--send-bg: #ececec;--send-icon: #171717;--send-bg-disabled: rgba(255,255,255,.1);--send-icon-disabled: rgba(255,255,255,.2);--shadow: 0 2px 8px rgba(0,0,0,.4);--shadow-drawer: -8px 0 40px rgba(0,0,0,.5)}[data-theme=light]{--bg: #ffffff;--bg-sidebar: #f9f9f9;--bg-card: #f4f4f4;--bg-input: #f4f4f4;--bg-hover: rgba(0,0,0,.04);--bg-user-bubble: #f4f4f4;--border: rgba(0,0,0,.08);--text: #0d0d0d;--text-2: rgba(13,13,13,.65);--text-3: rgba(13,13,13,.4);--accent: #1a91b8;--accent-bg: rgba(26,145,184,.08);--accent-border: rgba(26,145,184,.22);--send-bg: #0d0d0d;--send-icon: #ffffff;--send-bg-disabled: rgba(0,0,0,.08);--send-icon-disabled: rgba(0,0,0,.25);--shadow: 0 2px 8px rgba(0,0,0,.08);--shadow-drawer: -8px 0 40px rgba(0,0,0,.12)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}.root{display:flex;height:100%;width:100%;background:var(--bg);color:var(--text)}.sidebar{display:flex;flex-direction:column;background:var(--bg-sidebar);border-right:1px solid var(--border);transition:width .22s cubic-bezier(.4,0,.2,1);overflow:hidden;flex-shrink:0}.sidebar.open{width:240px}.sidebar.closed{width:56px}.sidebar-top{flex:1;display:flex;flex-direction:column;gap:4px;padding:12px 8px}.sidebar-logo{display:flex;align-items:center;gap:10px;padding:6px 4px 12px;border-bottom:1px solid 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6px;min-width:18px;text-align:center}.sidebar-bottom{padding:8px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:4px}.privacy-note{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--text-3);padding:4px 6px;white-space:nowrap}.theme-toggle-btn{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:10px;border:none;background:transparent;color:var(--text-2);font-size:13.5px;font-weight:500;transition:background .15s;white-space:nowrap}.theme-toggle-btn:hover{background:var(--bg-hover);color:var(--text)}.sidebar-collapse-btn{display:flex;align-items:center;justify-content:center;padding:8px;border-radius:10px;border:none;background:transparent;color:var(--text-3);transition:background .15s,color .15s}.sidebar-collapse-btn:hover{background:var(--bg-hover);color:var(--text)}.collapse-icon{transition:transform .22s ease}.collapse-icon.rotated{transform:rotate(180deg)}.chat-area{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg);overflow:hidden}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0}.chat-header-left,.header-max-info{display:flex;align-items:center;gap:10px}.header-name{font-size:14px;font-weight:700;display:flex;align-items:center;gap:6px}.online-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#1f9c54}.header-sub{font-size:11.5px;color:var(--text-3)}.chat-header-right{display:flex;align-items:center;gap:4px}.icon-btn{position:relative;display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;border:none;background:transparent;color:var(--text-2);transition:background .15s,color .15s}.icon-btn:hover{background:var(--bg-hover);color:var(--text)}.icon-badge{position:absolute;top:4px;right:4px;background:var(--accent);color:#fff;border-radius:99px;font-size:9px;font-weight:700;padding:0 3px;min-width:14px;height:14px;line-height:14px;text-align:center}.messages-area{flex:1;overflow-y:auto;padding:0;display:flex;flex-direction:column}.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 24px;max-width:680px;margin:0 auto;width:100%;text-align:center}.welcome-title{margin-top:20px;font-size:2rem;font-weight:800;letter-spacing:-.03em;color:var(--text)}.welcome-sub{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.65;max-width:480px}.starters{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:28px;width:100%;max-width:580px}.starter-btn{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:var(--bg-card);color:var(--text);font-size:13.5px;font-weight:500;text-align:left;transition:all .15s}.starter-btn:hover{background:var(--bg-hover);border-color:var(--accent-border);color:var(--accent)}.starter-btn svg{flex-shrink:0;color:var(--text-3)}.messages{padding:20px 0 8px;display:flex;flex-direction:column}.msg-row{display:flex;gap:12px;padding:6px 24px;transition:background .1s}.msg-row:hover{background:var(--bg-hover)}.msg-row.user{flex-direction:row-reverse;justify-content:flex-start}.msg-avatar-wrap{flex-shrink:0;padding-top:2px}.user-avatar{order:1}.user-icon{width:28px;height:28px;border-radius:999px;background:var(--bg-card);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-2)}.msg-bubble{max-width:min(680px,calc(100% - 56px));font-size:15px;line-height:1.65;word-break:break-word;overflow-wrap:anywhere}.msg-bubble.user{background:var(--bg-user-bubble);border:1px solid var(--border);border-radius:18px 18px 4px;padding:10px 16px}.msg-bubble.assistant{padding:4px 0;color:var(--text)}.msg-para{margin-bottom:8px}.msg-para:last-child{margin-bottom:0}.thinking{display:flex;align-items:center;gap:6px;color:var(--text-3);font-size:13px;font-weight:600;padding:6px 0;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.5}50%{opacity:1}}.code-block-wrap{margin:10px 0;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:#0d1117}.code-lang{padding:6px 14px;font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:#fff6;background:#ffffff0a;border-bottom:1px solid rgba(255,255,255,.06);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.code-pre{padding:14px;overflow-x:auto;font-size:13.5px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;color:#e6edf3;line-height:1.55;background:transparent}.ic{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--bg-card);border:1px solid var(--border);padding:1px 5px;border-radius:4px;font-size:.88em;color:var(--accent)}.rate-banner{display:flex;align-items:center;gap:8px;margin:0 24px 8px;padding:10px 14px;border-radius:10px;background:#ef444414;border:1px solid rgba(239,68,68,.2);color:#f87171;font-size:13.5px;flex-shrink:0}.input-area{padding:12px 24px 16px;flex-shrink:0;background:var(--bg)}.input-box{display:flex;align-items:flex-end;gap:8px;background:var(--bg-input);border:1px solid var(--border);border-radius:16px;padding:10px 10px 10px 16px;transition:border-color .2s,box-shadow .2s}.input-box:focus-within{border-color:var(--accent-border);box-shadow:0 0 0 2px var(--accent-bg)}.chat-input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-family:inherit;font-size:15px;line-height:1.5;resize:none;overflow-y:auto;max-height:160px;min-height:24px}.chat-input::placeholder{color:var(--text-3)}.send-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;border:none;background:var(--send-bg);color:var(--send-icon);flex-shrink:0;transition:opacity .15s,background .15s}.send-btn:not(.disabled):hover{opacity:.85}.send-btn.disabled{background:var(--send-bg-disabled);color:var(--send-icon-disabled);cursor:not-allowed}.input-hint{margin-top:6px;font-size:11.5px;color:var(--text-3);text-align:center}.drawer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:flex;justify-content:flex-end;animation:fadein .18s ease}.drawer{width:min(400px,100%);height:100%;background:var(--bg-sidebar);border-left:1px solid var(--border);box-shadow:var(--shadow-drawer);display:flex;flex-direction:column;animation:slidein .22s cubic-bezier(.16,1,.3,1)}.drawer-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);flex-shrink:0}.drawer-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700}.close-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;border:none;background:transparent;color:var(--text-2);transition:background .15s}.close-btn:hover{background:var(--bg-hover);color:var(--text)}.drawer-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.drawer-desc{font-size:13px;color:var(--text-2);line-height:1.6}.mem-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:14px}.mem-card-title{display:flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-2);margin-bottom:10px}.mem-stats{display:grid;grid-template-columns:1fr 1fr;gap:8px}.mem-stat{background:var(--bg);border-radius:8px;padding:10px 12px;display:flex;flex-direction:column;gap:2px}.mem-stat-label{font-size:11px;color:var(--text-3)}.mem-stat-val{font-size:14px;font-weight:700}.mem-stat-val.accent{color:var(--accent)}.mem-list{list-style:none;display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--text-2)}.mem-list li{line-height:1.5}.mem-empty{font-size:13px;color:var(--text-3);font-style:italic;line-height:1.55}.reset-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;width:100%;border-radius:10px;border:1px solid rgba(239,68,68,.22);background:#ef444412;color:#f87171;font-size:13.5px;font-weight:500;margin-top:auto;transition:background .15s}.reset-btn:hover{background:#ef444424}@keyframes fadein{0%{opacity:0}to{opacity:1}}@keyframes slidein{0%{transform:translate(100%)}to{transform:translate(0)}}@media (max-width: 700px){.sidebar{display:none}.msg-row{padding:6px 14px}.input-area{padding:10px 14px 14px}.welcome{padding:32px 16px}.starters{grid-template-columns:1fr}.welcome-title{font-size:1.6rem}.messages{padding:12px 0 8px}}