:root{color-scheme:dark;--bg:#07090d;--panel:#0d1118;--panel2:#111722;--line:#222b39;--text:#f4f6fa;--muted:#8e9aab;--accent:#edf4ff;--shadow:0 22px 80px rgba(0,0,0,.35)}*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:radial-gradient(circle at 15% -10%,#1a2942 0,transparent 27%),var(--bg);color:var(--text);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea{font:inherit}.hidden{display:none!important}.login-shell{min-height:100%;display:grid;place-items:center;padding:24px}.login-card{width:min(430px,100%);background:rgba(13,17,24,.92);border:1px solid var(--line);border-radius:24px;padding:32px;box-shadow:var(--shadow);backdrop-filter:blur(18px)}.brand-mark{width:54px;height:54px;border-radius:16px;background:linear-gradient(145deg,#fff,#97a9c5);color:#08101c;display:grid;place-items:center;font-weight:900;letter-spacing:-.08em;margin-bottom:22px}.brand-mark.small{width:36px;height:36px;border-radius:11px;margin:0;font-size:12px}.login-card h1{margin:0;font-size:24px;letter-spacing:-.03em}.login-card p{margin:5px 0 24px;color:var(--muted)}label{display:grid;gap:8px;color:#c9d2df}input,textarea{width:100%;border:1px solid var(--line);border-radius:12px;background:#090d13;color:var(--text);outline:none;padding:12px 13px}input:focus,textarea:focus{border-color:#53657f;box-shadow:0 0 0 3px rgba(112,138,174,.12)}button,.upload-button{border:1px solid var(--line);background:#121823;color:#dfe7f2;border-radius:10px;padding:9px 12px;cursor:pointer;transition:.15s ease;display:inline-flex;align-items:center;justify-content:center}.upload-button{display:inline-flex}.primary{background:#f0f4fa;color:#0a0e15;border-color:#f0f4fa;font-weight:700}.ghost:hover,.upload-button:hover{background:#1a2230}.primary:hover{filter:brightness(.92)}.login-card .primary{width:100%;margin-top:16px}.error{color:#ff9c9c;min-height:20px;margin-top:10px}.app{height:100%;display:flex;flex-direction:column}.topbar{height:64px;flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line);background:rgba(7,9,13,.86);backdrop-filter:blur(16px)}.brand{display:flex;align-items:center;gap:11px}.brand div{display:grid}.brand strong{font-size:14px}.brand span{font-size:11px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:10px}.badge{font:11px ui-monospace,SFMono-Regular,Menlo,monospace;color:#c0ccdc;background:#111823;border:1px solid var(--line);padding:6px 9px;border-radius:999px}.workspace-grid{flex:1;min-height:0;display:grid;grid-template-columns:minmax(360px,.95fr) minmax(320px,.7fr) minmax(420px,1.25fr);gap:10px;padding:10px}.panel{min-width:0;min-height:0;background:rgba(13,17,24,.92);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 12px 45px rgba(0,0,0,.12)}.panel-head{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line)}.panel-head h2{font-size:13px;margin:0 0 2px}.panel-head p{font-size:11px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px}.messages{flex:1;overflow:auto;padding:18px}.message{margin-bottom:18px}.message .role{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-bottom:5px}.bubble{white-space:pre-wrap;overflow-wrap:anywhere;color:#dde5ef}.message.user .bubble{background:#131a25;border:1px solid var(--line);padding:11px 12px;border-radius:12px}.artifact-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}.artifact{font-size:11px;border:1px solid var(--line);border-radius:9px;padding:6px 8px;color:#c6d5e8;cursor:pointer;background:#101722}.composer{border-top:1px solid var(--line);padding:12px;background:#0a0e14}.composer textarea{resize:none;min-height:76px;max-height:180px}.composer-row{display:flex;align-items:center;gap:9px;margin-top:9px}.composer-row .muted{flex:1}.muted{color:var(--muted);font-size:11px}.file-list{overflow:auto;max-height:42%;border-bottom:1px solid var(--line)}.file-row{display:grid;grid-template-columns:22px 1fr auto;gap:8px;align-items:center;padding:9px 12px;border-bottom:1px solid rgba(34,43,57,.6);cursor:pointer}.file-row:hover{background:#111722}.file-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-meta{font-size:10px;color:var(--muted)}.editor-wrap{flex:1;min-height:0;display:flex;flex-direction:column}.editor-head{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:9px 10px;border-bottom:1px solid var(--line)}.editor-head strong{font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.editor-head>div{display:flex;gap:5px}.editor-head button{padding:6px 8px;font-size:10px}.editor{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.editor-wrap textarea{flex:1;resize:none;border:0;border-radius:0;background:#080c12;padding:14px;font:12px/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.preview-panel iframe{flex:1;width:100%;border:0;background:#fff}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#74d99f;margin-right:6px}@media(max-width:1250px){.workspace-grid{grid-template-columns:1fr 1fr;grid-template-rows:minmax(500px,1fr) minmax(500px,1fr)}.chat-panel{grid-row:1/3}.preview-panel{grid-column:2}}@media(max-width:800px){.workspace-grid{display:flex;overflow:auto;flex-direction:column}.panel{min-height:520px}.chat-panel{min-height:70vh}.preview-panel{min-height:70vh}.badge{display:none}.topbar{padding:0 10px}.workspace-grid{padding:7px;gap:7px}}