:root{--bg: #07070a;--bg-elev-1: #0c0c11;--bg-elev-2: #131319;--bg-elev-3: #1b1b23;--bg-input: #101016;--border: rgba(255, 255, 255, .07);--border-strong: rgba(255, 255, 255, .13);--text: #f3f4f8;--text-dim: #9b9ca8;--text-faint: #62636f;--accent: #34a06b;--accent-hover: #3eb079;--accent-press: #2c8a5b;--accent-soft: rgba(52, 160, 107, .14);--accent-glow: rgba(52, 160, 107, .34);--accent-grad: linear-gradient(135deg, #34a06b 0%, #2f9c83 100%);--accent-grad-soft: linear-gradient(135deg, rgba(52, 160, 107, .18), rgba(47, 156, 131, .12));--danger: #ff6b6b;--success: #4ade80;--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--radius-xl: 22px;--font: "Inter", -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;--shadow-pop: 0 12px 40px rgba(0, 0, 0, .55);--shadow-soft: 0 4px 18px rgba(0, 0, 0, .35);color-scheme:dark;font-family:var(--font);font-synthesis:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);background-image:radial-gradient(900px 500px at 12% -8%,rgba(52,160,107,.1),transparent 60%),radial-gradient(800px 600px at 105% 0%,rgba(47,156,131,.08),transparent 55%);background-attachment:fixed}button{cursor:pointer;font:inherit;color:inherit}button:disabled{cursor:not-allowed}a{color:inherit;text-decoration:none}input,textarea,select{font:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}*{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}*::-webkit-scrollbar{width:10px;height:10px}*::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:999px;border:3px solid transparent;background-clip:content-box}*::-webkit-scrollbar-thumb:hover{background:#ffffff38;background-clip:content-box}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}@keyframes pulse-dot{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}@keyframes glow{0%,to{box-shadow:0 0 0 0 var(--accent-glow)}50%{box-shadow:0 0 22px 2px var(--accent-glow)}}.login{height:100%;display:grid;place-items:center;padding:24px}.login-card{position:relative;background:linear-gradient(180deg,var(--bg-elev-2),var(--bg-elev-1));padding:48px 44px;border-radius:var(--radius-xl);text-align:center;border:1px solid var(--border);max-width:400px;width:100%;box-shadow:var(--shadow-pop);animation:fadeUp .5s ease both}.login-logo{width:72px;height:72px;border-radius:18px;margin:0 auto 20px;display:grid;place-items:center;overflow:hidden;box-shadow:0 8px 30px var(--accent-glow);animation:glow 4s ease-in-out infinite}.login-logo svg{width:32px;height:32px;color:#fff}.login-logo img{width:100%;height:100%;object-fit:contain}.login-card h1{margin:0 0 8px;font-size:26px;font-weight:700;letter-spacing:-.02em}.login-card p{margin:0;color:var(--text-dim);font-size:15px;line-height:1.5}.login-card button{margin-top:28px;width:100%;background:var(--accent-grad);color:#fff;border:0;padding:14px 24px;border-radius:var(--radius);font-weight:600;font-size:15px;transition:transform .12s ease,box-shadow .2s ease;box-shadow:0 6px 20px var(--accent-glow)}.login-card button:hover{transform:translateY(-1px);box-shadow:0 10px 28px var(--accent-glow)}.login-card button:active{transform:translateY(0)}.layout{display:grid;grid-template-columns:280px 1fr;height:100%}.main{overflow:hidden;display:flex;flex-direction:column;min-width:0}.mobile-topbar,.nav-backdrop{display:none}.hamburger{width:40px;height:40px;border-radius:10px;background:transparent;border:1px 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svg{width:15px;height:15px;color:#fff}.brand-name{font-weight:600;font-size:15px;letter-spacing:-.01em}.bell-wrap{position:relative;margin-left:auto;flex:none}.bell-btn{position:relative;width:32px;height:32px;display:grid;place-items:center;background:transparent;border:0;border-radius:8px;color:var(--text-dim)}.bell-btn:hover{background:var(--bg-elev-2);color:var(--text)}.bell-btn svg{width:17px;height:17px}.bell-badge{position:absolute;top:1px;right:1px;min-width:15px;height:15px;padding:0 3px;display:grid;place-items:center;background:var(--danger, #e5484d);color:#fff;font-size:9.5px;font-weight:700;border-radius:999px;line-height:1}.bell-menu{position:fixed;z-index:60;width:300px;max-width:calc(100vw - 16px);max-height:60vh;overflow-y:auto;background:var(--bg-elev-1);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:0 12px 34px #00000057;animation:dd-pop .14s ease}.bell-head{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint);padding:6px 8px}.bell-empty{color:var(--text-faint);font-size:13px;padding:8px}.bell-item{display:block;width:100%;text-align:left;background:transparent;border:0;color:var(--text);padding:9px 10px;border-radius:8px;font-size:13px;line-height:1.4;cursor:pointer}.bell-item:hover{background:var(--bg-elev-2)}.bell-item.unread,.bell-item.unread:hover{background:var(--accent-soft)}.new-row{display:flex;align-items:center;gap:6px;margin-bottom:8px}.new-chat,.quick-action{display:flex;align-items:center;background:transparent;border:0;color:var(--text-dim);height:38px;padding:0 11px;border-radius:10px;font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;transition:background .15s,color .15s}.new-chat{flex:1;min-width:0;color:var(--text);font-size:14px}.quick-actions{display:flex;align-items:center;gap:4px;flex:none}.quick-action{flex:none}.new-chat svg,.quick-action svg{width:16px;height:16px;flex:none;opacity:.85}.new-chat span,.quick-action span{max-width:160px;opacity:1;margin-left:9px;overflow:hidden;text-overflow:ellipsis;transition:max-width .25s ease,opacity .18s ease,margin-left .25s ease}.quick-action span{max-width:0;opacity:0;margin-left:0}.new-chat:hover,.quick-action:hover{background:var(--bg-elev-2);color:var(--text)}.quick-action:hover span{max-width:160px;opacity:1;margin-left:9px}.new-row:has(.quick-actions:hover) .new-chat span{max-width:0;opacity:0;margin-left:0}.side-search{display:flex;align-items:center;gap:8px;width:100%;margin:0 2px 8px;padding:8px 10px;background:var(--bg-elev-1);border:1px solid var(--border);border-radius:9px;color:var(--text-faint);cursor:pointer;transition:background .15s,border-color .15s}.side-search:hover{background:var(--bg-elev-2);border-color:var(--border-strong);color:var(--text-dim)}.side-search svg{width:14px;height:14px;flex:none}.side-search-ph{font-size:13px}.search-modal{display:flex;flex-direction:column;gap:14px}.search-field{display:flex;align-items:center;gap:9px;padding:11px 13px;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:var(--radius)}.search-field:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.search-field svg{width:17px;height:17px;flex:none;color:var(--text-dim)}.search-field input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--text);font-size:15px}.search-field input::placeholder{color:var(--text-faint)}.search-body{min-height:120px;max-height:52vh;overflow-y:auto;display:flex;flex-direction:column;gap:6px}.search-hint{color:var(--text-faint);font-size:13.5px;padding:18px 6px;text-align:center}.search-loading{display:flex;align-items:center;gap:14px;padding:20px 8px}.search-loading b{display:block;font-size:14px}.search-loading span{color:var(--text-dim);font-size:12.5px}.search-spinner{width:26px;height:26px;flex:none;border-radius:50%;border:3px solid var(--bg-elev-3);border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.search-result{display:flex;align-items:flex-start;gap:11px;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:10px;padding:10px 11px;cursor:pointer;transition:background .12s,border-color .12s}.search-result:hover{background:var(--bg-elev-2);border-color:var(--border)}.search-result .sr-icon{width:28px;height:28px;flex:none;border-radius:8px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-hover)}.search-result .sr-icon svg{width:15px;height:15px}.search-result .sr-main{display:flex;flex-direction:column;gap:2px;min-width:0}.search-result 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.side-add{opacity:1}.side-add:hover{background:var(--bg-elev-3);color:var(--text)}.side-item{display:flex;align-items:center;gap:10px;padding:8px 11px;border-radius:9px;color:var(--text-dim);font-size:14px;font-weight:450;white-space:nowrap;overflow:hidden;transition:background .12s,color .12s}.side-item svg{width:15px;height:15px;flex:none;opacity:.6}.side-item span{overflow:hidden;text-overflow:ellipsis}.side-item:hover{background:var(--bg-elev-2);color:var(--text)}.side-item.active{background:#ffffff0f;color:var(--text)}.side-hint{color:var(--text-faint);font-size:12.5px;padding:4px 11px}.nav-links{display:flex;flex-direction:column;gap:1px;border-top:1px solid var(--border);padding-top:8px;margin-top:2px}.nav-links a{display:flex;align-items:center;gap:10px;padding:8px 11px;border-radius:9px;color:var(--text-dim);font-size:14px;font-weight:450;transition:background .12s,color .12s}.nav-links a svg{width:16px;height:16px;flex:none;opacity:.85}.nav-links a:hover{background:var(--bg-elev-2);color:var(--text)}.nav-links a.active{background:#ffffff0f;color:var(--text)}.chat-list{flex:1;overflow-y:auto;margin:0 -2px;padding:0 2px}.chat-list h4{color:var(--text-faint);font-size:11px;font-weight:600;letter-spacing:.04em;margin:14px 10px 4px}.chat-item-wrap{position:relative;border-radius:9px}.chat-item-wrap:hover{background:var(--bg-elev-2)}.chat-item-wrap.active{background:#ffffff0f}.chat-item{display:flex;align-items:center;gap:9px;padding:8px 34px 8px 11px;border-radius:9px;color:var(--text-dim);font-size:14px;font-weight:450;white-space:nowrap;overflow:hidden;transition:color .12s}.chat-item svg{width:15px;height:15px;flex:none;opacity:.6}.chat-item span{overflow:hidden;text-overflow:ellipsis}.chat-item-wrap:hover .chat-item,.chat-item-wrap.active .chat-item{color:var(--text)}.chat-item.editing{padding:4px 6px}.chat-item.editing input{width:100%;background:var(--bg-input);border:1px solid var(--accent);color:var(--text);border-radius:7px;padding:6px 8px;font-size:14px}.chat-item.editing input:focus{outline:none}.chat-menu-btn{position:absolute;right:5px;top:50%;transform:translateY(-50%);width:26px;height:26px;border:0;background:transparent;color:var(--text-dim);border-radius:6px;display:grid;place-items:center;opacity:0;transition:opacity .12s,background .12s}.chat-menu-btn svg{width:16px;height:16px}.chat-item-wrap:hover .chat-menu-btn{opacity:1}.chat-menu-btn:hover{background:var(--bg-elev-3);color:var(--text)}.chat-menu{position:absolute;right:4px;top:calc(100% - 2px);z-index:30;min-width:150px;background:var(--bg-elev-2);border:1px solid var(--border-strong);border-radius:10px;padding:5px;box-shadow:var(--shadow-pop);animation:fadeUp .14s ease both}.chat-menu button{display:flex;align-items:center;gap:9px;width:100%;background:transparent;border:0;color:var(--text-dim);padding:8px 10px;border-radius:7px;font-size:13px;text-align:left}.chat-menu button svg{width:15px;height:15px}.chat-menu button:hover{background:var(--bg-elev-3);color:var(--text)}.chat-menu button.danger{color:var(--danger)}.chat-menu button.danger:hover{color:var(--danger);background:var(--bg-elev-3)}.chat-empty-hint{color:var(--text-faint);font-size:13px;padding:6px 10px}.sidebar-footer{position:relative;border-top:1px solid var(--border);padding:10px 4px 4px;margin-top:4px}.user-btn{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:0;padding:6px 8px;border-radius:10px;text-align:left;transition:background .15s}.user-btn:hover{background:var(--bg-elev-2)}.user-menu{position:absolute;bottom:calc(100% - 2px);left:4px;right:4px;z-index:30;background:var(--bg-elev-2);border:1px solid var(--border-strong);border-radius:11px;padding:5px;box-shadow:var(--shadow-pop);animation:fadeUp .14s ease both}.user-menu button{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:0;color:var(--text-dim);padding:9px 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.title{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-header-title{display:flex;flex-direction:column;gap:3px;min-width:0}.project-tag{display:inline-flex;align-items:center;gap:5px;align-self:flex-start;max-width:100%;background:var(--accent-soft);color:var(--accent-hover);border:1px solid var(--accent);font-size:11.5px;font-weight:600;padding:1px 9px;border-radius:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.project-tag svg{width:12px;height:12px;flex:none;opacity:.9}.chat-header .ghost-btn{display:flex;align-items:center;gap:7px}.chat-header-actions{display:flex;align-items:center;gap:8px;flex:none}.help-wrap{position:relative}.help-wrap .ghost-btn{padding:8px;display:grid;place-items:center}.help-popover{position:absolute;top:calc(100% + 8px);right:0;z-index:40;width:300px;background:var(--bg-elev-1);border:1px solid var(--border);border-radius:12px;padding:12px 14px;box-shadow:0 12px 34px #00000052;animation:dd-pop .14s ease;font-size:13px}.help-popover b{display:block;margin-bottom:8px}.help-popover ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:6px;color:var(--text-dim)}.msg-notice{font-size:12.5px;color:var(--text-dim);background:var(--bg-elev-2);border:1px solid var(--border);border-radius:8px;padding:6px 10px;margin-bottom:8px}.branch-tabs{display:flex;gap:6px;padding:10px 20px 0;flex-wrap:wrap}.branch-tab{display:inline-flex;align-items:center;gap:6px;background:var(--bg-elev-1);border:1px solid var(--border);color:var(--text-dim);padding:6px 12px;border-radius:999px;font-size:12.5px;font-weight:500;cursor:pointer}.branch-tab .ro{font-size:10px;color:var(--text-faint);border-left:1px solid var(--border);padding-left:6px}.branch-tab:hover{background:var(--bg-elev-2);color:var(--text)}.branch-tab.active{background:var(--accent-soft);color:var(--accent-hover);border-color:transparent}.branch-tab.active .ro{border-color:var(--accent-hover);color:var(--accent-hover)}.branch-readonly{max-width:820px;margin:0 auto;padding:16px;text-align:center;color:var(--text-dim);font-size:13px}.branch-readonly .link-btn{margin-left:8px;background:transparent;border:0;color:var(--accent-hover);cursor:pointer;text-decoration:underline;font-size:13px}.ghost-btn{background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text-dim);padding:8px 13px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;transition:background .15s,color .15s,border-color .15s}.ghost-btn svg{width:15px;height:15px}.ghost-btn:hover{background:var(--bg-elev-3);color:var(--text);border-color:var(--border-strong)}.messages{flex:1;overflow-y:auto;padding:28px 20px 12px;scroll-behavior:smooth}.msg{max-width:820px;width:100%;margin:0 auto 18px;display:flex;animation:fadeUp .3s ease both}.msg-user{justify-content:flex-end}.msg-assistant{justify-content:flex-start}.msg-main{min-width:0;max-width:88%}.msg-user 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