:root{
  color-scheme:light dark;--bg:#fff;--panel:#f7f7f8;--panel-2:#ececf1;--text:#202123;--muted:#6b6c7b;
  --border:#e5e5e5;--hover:#ececf1;--user-bubble:#f4f4f4;--composer:#fff;--accent:#111827;--danger:#dc2626;
  --shadow:0 8px 30px rgba(0,0,0,.08);--content:760px
}
@media(prefers-color-scheme:dark){:root{
  --bg:#212121;--panel:#171717;--panel-2:#2f2f2f;--text:#ececec;--muted:#a9a9b2;--border:#383838;
  --hover:#2a2a2a;--user-bubble:#303030;--composer:#2f2f2f;--accent:#fff;--shadow:0 8px 30px rgba(0,0,0,.28)
}}
*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text)}
button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}.hidden{display:none!important}
.center-card{min-height:100%;display:grid;place-items:center;padding:24px;background:var(--bg)}
.login-card{width:min(92vw,400px);padding:30px;border:1px solid var(--border);border-radius:24px;background:var(--composer);box-shadow:var(--shadow)}
.login-card form{display:grid;gap:12px}.login-card input{padding:14px 15px;border:1px solid var(--border);border-radius:12px;background:var(--bg);outline:none}
.login-card input:focus{border-color:var(--muted)}.login-card button{padding:13px;border:0;border-radius:12px;background:var(--accent);color:var(--bg);font-weight:700}
.brand{font-size:34px;font-weight:800;text-align:center;letter-spacing:-.5px}.brand span{opacity:.58}.brand.small{font-size:19px;text-align:right}.login-card p{text-align:center;color:var(--muted)}.error{color:var(--danger);min-height:22px;font-size:13px}
.app{height:100dvh;display:flex;overflow:hidden;background:var(--bg)}
.sidebar{width:270px;flex:0 0 270px;background:var(--panel);border-left:1px solid var(--border);padding:10px;display:flex;flex-direction:column;gap:8px;z-index:40}
.side-head{display:grid;gap:10px;padding:4px}.new-chat-btn{width:100%;text-align:right;border:0;background:transparent;padding:11px 12px;border-radius:10px;font-weight:650}.new-chat-btn:hover{background:var(--hover)}
.section-label{font-size:12px;color:var(--muted);font-weight:650;padding:5px 8px}.conversations-label{margin-top:3px}
.project-panel{border:0;background:transparent;padding:5px 4px 8px;display:grid;gap:7px}.project-panel select{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:10px;background:var(--bg);outline:none}
.project-actions{display:grid;grid-template-columns:1fr 1fr;gap:6px}.mini{border:1px solid var(--border);background:var(--bg);border-radius:9px;padding:8px}.mini:hover{background:var(--hover)}.project-panel small{font-size:10px;color:var(--muted);line-height:1.45;padding:0 4px}
.conversation-list{flex:1;min-height:0;overflow:auto;padding:2px}.conversation{display:flex;gap:4px;align-items:center;margin:2px 0;border-radius:9px}.conversation:hover,.conversation.active{background:var(--hover)}
.conversation button.open{flex:1;min-width:0;text-align:right;border:0;background:transparent;padding:10px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation button.delete{border:0;background:transparent;color:var(--muted);padding:8px;opacity:.45}.conversation:hover button.delete{opacity:1}
.side-footer{display:grid;gap:3px;padding-top:7px;border-top:1px solid var(--border)}.side-action{border:0;background:transparent;color:var(--text);text-align:right;text-decoration:none;border-radius:9px;padding:10px}.side-action:hover{background:var(--hover)}.chat{min-width:0;flex:1;display:flex;flex-direction:column;background:var(--bg);position:relative}.chat-header{height:56px;flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:0 14px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(14px);z-index:20}
.head-copy{min-width:0;flex:1;text-align:right}.chat-header strong{display:block;font-size:14px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-header small{display:block;font-size:11px;color:var(--muted);margin-top:2px}.icon-btn{display:none;width:38px;height:38px;border:0;background:transparent;border-radius:10px;font-size:20px}.icon-btn:hover{background:var(--hover)}
.project-pill{font-size:11px;background:var(--panel);border:1px solid var(--border);padding:6px 9px;border-radius:999px;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.messages{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:26px max(18px,calc((100% - var(--content))/2)) 150px;scroll-behavior:auto}
.welcome{display:grid;place-items:center;text-align:center;margin:15vh auto 0;max-width:560px;color:var(--muted)}.welcome-mark{width:46px;height:46px;border-radius:50%;display:grid;place-content:center;background:var(--text);color:var(--bg);font-weight:800;font-size:18px}.welcome h1{margin:16px 0 5px;color:var(--text);font-size:28px;letter-spacing:-.6px}.welcome p{margin:0;font-size:14px}
.msg{display:flex;width:100%;margin:18px 0}.msg.user{justify-content:flex-start}.msg.assistant{justify-content:stretch}.bubble-wrap{max-width:100%}.user .bubble-wrap{max-width:min(80%,640px)}.assistant .bubble-wrap{width:100%}
.bubble{line-height:1.75;white-space:pre-wrap;word-break:break-word;font-size:15.5px}.user .bubble{background:var(--user-bubble);padding:10px 14px;border-radius:20px;border-bottom-right-radius:6px}.assistant .bubble{background:transparent;padding:0;color:var(--text)}
.assistant .bubble strong{font-weight:750}.assistant .bubble code{background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:1px 5px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92em}
.bubble-tools{display:flex;gap:4px;margin-top:7px;opacity:.25;transition:.15s}.msg:hover .bubble-tools{opacity:1}.bubble-tool{border:0;background:transparent;color:var(--muted);border-radius:7px;padding:5px 7px;font-size:12px}.bubble-tool:hover{background:var(--hover);color:var(--text)}
.composer-shell{position:absolute;z-index:15;bottom:0;left:0;right:0;padding:20px max(14px,calc((100% - var(--content))/2)) max(10px,env(safe-area-inset-bottom));background:linear-gradient(to top,var(--bg) 72%,color-mix(in srgb,var(--bg) 78%,transparent) 88%,transparent)}
.composer{display:flex;flex-wrap:wrap;align-items:flex-end;gap:8px;padding:10px 12px;border:1px solid var(--border);border-radius:27px;background:var(--composer);box-shadow:0 2px 12px rgba(0,0,0,.08)}
.composer textarea{flex:0 0 100%;width:100%;resize:none;max-height:190px;min-height:32px;padding:5px 4px;border:0;background:transparent;outline:none;line-height:1.5;font-size:16px;overflow-y:auto}.composer textarea::placeholder{color:var(--muted)}
.composer-bottom{flex:1 0 100%;display:flex;align-items:center;justify-content:space-between;gap:8px}.composer-tools,.composer-actions{display:flex;align-items:center;gap:7px}.tool-btn,.send-btn,.stop-btn{width:36px;height:36px;border-radius:50%;display:grid;place-content:center;border:1px solid var(--border);background:transparent}.tool-btn:hover{background:var(--hover)}
.tool-chip{height:36px;border:1px solid var(--border);background:transparent;border-radius:999px;padding:0 11px;font-size:12px}.tool-chip:hover{background:var(--hover)}.send-btn{border:0;background:var(--text);color:var(--bg);font-size:20px;font-weight:700}.send-btn:disabled{opacity:.28}.stop-btn{border:0;background:var(--text);color:var(--bg);font-size:13px}.mic-btn.recording{background:#ef4444;color:#fff;border-color:#ef4444;animation:pulse 1.1s infinite}.composer-note{display:block;text-align:center;color:var(--muted);font-size:10px;margin-top:7px}@keyframes pulse{50%{opacity:.55}}
.attachment-tray{display:flex;gap:7px;overflow-x:auto;padding:0 3px 8px}.attachment-chip{display:flex;align-items:center;gap:7px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:7px 9px;font-size:12px;white-space:nowrap}.attachment-remove{border:0;background:transparent;color:var(--muted);font-size:15px;padding:0 2px}.attachment-remove:hover{color:var(--danger)}.connections-drawer{position:fixed;z-index:70;right:18px;bottom:96px;width:min(92vw,430px);max-height:72vh;overflow:auto;background:var(--composer);border:1px solid var(--border);border-radius:20px;padding:14px;box-shadow:var(--shadow)}
.connections-head{display:flex;align-items:center;justify-content:space-between}.connections-head h3{margin:3px 0;font-size:16px}.connections-close{border:0;background:transparent;color:var(--muted);font-size:28px}.provider-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:10px 0}.provider-card,.add-site-btn,.site-save,.site-cancel{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:12px;padding:10px}.provider-card.connected{border-color:#10a37f}.sites-list{display:grid;gap:8px}.site-row{display:flex;gap:8px;align-items:center;justify-content:space-between;padding:10px;border:1px solid var(--border);border-radius:12px}.site-row>div{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.site-form{display:grid;gap:8px;margin-top:10px}.site-form input{padding:11px;border-radius:10px;border:1px solid var(--border);background:var(--bg);outline:none}.site-form-actions{display:flex;gap:8px}.connections-note{font-size:11px;color:var(--muted);margin-top:10px}.artifact-link{display:inline-block!important;margin-top:9px;padding:8px 12px;border-radius:10px;background:var(--text)!important;color:var(--bg)!important;text-decoration:none;font-weight:650}
.sidebar-backdrop{display:none}.admin-card{max-width:980px;margin:30px auto;padding:20px}.user-row{border:1px solid var(--border);border-radius:14px;padding:12px;margin:10px 0;background:var(--panel)}.user-controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.user-controls input{padding:8px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text)}
@media(max-width:760px){
  .app{display:block}.sidebar{position:fixed;top:0;bottom:0;right:0;width:min(86vw,320px);transform:translateX(105%);transition:transform .18s ease;box-shadow:var(--shadow);border-left:1px solid var(--border)}.sidebar.open{transform:none}
  .sidebar-backdrop{display:block;position:fixed;inset:0;z-index:35;background:rgba(0,0,0,.34);opacity:1}.sidebar-backdrop.hidden{display:none!important}.icon-btn{display:grid;place-content:center}.chat{height:100dvh}.chat-header{height:54px;padding:0 9px}.head-copy{text-align:right}.project-pill{max-width:90px}
  .messages{padding:16px 14px 145px}.welcome{margin-top:18vh}.welcome h1{font-size:24px}.msg{margin:16px 0}.user .bubble-wrap{max-width:88%}.bubble{font-size:15.5px}.composer-shell{padding:16px 9px max(7px,env(safe-area-inset-bottom))}.composer{border-radius:25px;padding:9px 10px}.composer-note{display:none}.tool-chip{max-width:128px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .connections-drawer{right:8px;left:8px;bottom:82px;width:auto;max-height:76vh}.provider-grid{grid-template-columns:1fr 1fr}.bubble-tools{opacity:.65}
}
@media(max-width:390px){.tool-chip{font-size:0;width:36px;padding:0}.tool-chip::after{content:'↗';font-size:16px}.project-actions{grid-template-columns:1fr}.welcome p{font-size:13px}}
.send-btn.stop-mode{font-size:13px;background:var(--text);color:var(--bg)}
.mic-btn{font-size:17px;transition:background .15s,color .15s,box-shadow .1s,transform .1s}.mic-btn.recording{background:#ef4444;color:white;border-color:#ef4444}.mic-icon{line-height:1;filter:grayscale(1)}.mic-btn.recording .mic-icon{filter:none}