:root{color-scheme:light;--ink: #172433;--ink-soft: #24384c;--paper: #f4efe6;--card: #fffdf8;--line: #e4d9c8;--amber: #c56a12;--amber-deep: #8a4708;--sage: #2f6a4a;--danger: #8d3a2e;--muted: #6e655b;--text: #1c1915;--shadow: 0 18px 50px rgba(23, 36, 51, .12);font-family:"Source Sans 3",Segoe UI,sans-serif;color:var(--text);background:var(--paper)}*{box-sizing:border-box}body{margin:0;min-height:100vh;overflow-x:hidden}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}h1,h2,h3{font-family:Fraunces,Georgia,serif;font-weight:560;letter-spacing:-.03em;margin:0}p{margin:0}.eyebrow{margin:0 0 8px;color:var(--amber);font-size:.78rem;font-weight:650;letter-spacing:.16em;text-transform:uppercase}.muted{color:var(--muted)}.error{color:var(--danger);margin:8px 0 0}.primary,.ghost{border-radius:999px;border:1px solid transparent;padding:10px 16px}.primary{background:var(--amber);color:#fff}.primary:disabled{opacity:.55;cursor:wait}.ghost{background:transparent;border-color:var(--line)}.danger{color:var(--danger)}.gate,.login{min-height:100vh;display:grid}.login{grid-template-columns:minmax(280px,.9fr) minmax(320px,1.1fr)}.login-brand{background:radial-gradient(circle at top left,rgba(197,106,18,.35),transparent 32%),var(--ink);color:#f7f1e7;padding:64px 56px;display:flex;flex-direction:column;justify-content:flex-end;gap:18px}.login-brand h1{font-size:4.5rem;line-height:.9}.login-brand p{max-width:36ch;font-size:1.15rem;line-height:1.45}.model-pill{align-self:flex-start;border:1px solid rgba(247,241,231,.3);border-radius:999px;padding:6px 12px;font-size:.92rem}.login-card{margin:auto;width:min(420px,calc(100% - 48px));background:var(--card);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:32px;display:grid;gap:16px}.login-card h2{font-size:2rem}label{display:grid;gap:6px;font-weight:650}input,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px}textarea{resize:vertical;min-height:112px;line-height:1.45}.shell{min-height:100vh;display:grid;grid-template-columns:320px 1fr}.sidebar{background:var(--ink);color:#f6f1e8;padding:28px 20px;display:flex;flex-direction:column;gap:16px;min-height:100vh}.sidebar-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.sidebar h1{font-size:2rem}.sidebar .muted,.log-count{color:#cabbab}.session-list{list-style:none;margin:0;padding:0;display:grid;gap:8px;overflow:auto}.session-list li{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}.session{text-align:left;background:transparent;color:inherit;border:1px solid transparent;border-radius:16px;padding:12px;display:grid;gap:4px}.session.active,.session:hover{background:var(--ink-soft)}.session-title{font-weight:650}.session-meta{color:#cabbab;font-size:.85rem}.sidebar .ghost{color:#f6f1e8;border-color:#f6f1e840}.conversation{display:grid;grid-template-rows:auto 1fr auto;min-height:100vh;min-width:0}.topbar,.composer-bar{display:flex;justify-content:space-between;gap:16px;align-items:center}.topbar{padding:22px 28px 8px}.topbar h2{font-size:1.7rem}.topbar .ghost{white-space:nowrap;flex:none}.menu,.scrim{display:none}.thread{overflow:auto;padding:12px 28px 20px;display:grid;align-content:start;gap:14px}.empty{max-width:46ch;margin-top:8vh;display:grid;gap:10px}.empty h3{font-size:2.4rem;line-height:1.05}.bubble{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:16px 18px;display:grid;gap:8px;max-width:760px}.bubble header{display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem}.bubble p{white-space:pre-wrap;line-height:1.5}.bubble.assistant{background:#f8f3ea}.bubble.assistant:has(.canvas-app){max-width:min(960px,100%)}.bubble.user{margin-left:auto;border-color:#efd3b0}.activity{color:var(--sage);font-size:.85rem}.canvas-app{margin:4px 0 0;display:grid;gap:8px}.canvas-app figcaption{font-weight:650}.canvas-app iframe{width:100%;height:420px;border:1px solid var(--line);border-radius:16px;background:#11161c}.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}.chips li{display:flex;gap:8px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:6px 8px}.chips img{width:42px;height:42px;object-fit:cover;border-radius:8px}.chips small{display:block;color:var(--muted)}.composer{margin:0 28px 22px;background:var(--card);border:1px solid var(--line);border-radius:24px;padding:14px;display:grid;gap:10px;box-shadow:var(--shadow)}.composer.drag{outline:2px dashed var(--amber)}.file-label input{display:none}.file-label{display:inline-flex;align-items:center}@media(max-width:860px){.login{grid-template-columns:1fr}.login-brand{min-height:280px;padding:32px 24px}.login-brand h1{font-size:3.2rem}.shell{grid-template-columns:1fr}.sidebar{position:fixed;inset:0 auto 0 0;width:min(340px,88vw);z-index:3;transform:translate(-105%);transition:transform .16s ease}.sidebar.open{transform:none}.scrim{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#17243359;border:0;z-index:2}.menu{display:inline-flex}.topbar,.thread{padding-left:16px;padding-right:16px}.composer{margin-left:16px;margin-right:16px}.composer-bar{align-items:stretch;flex-direction:column}.empty h3{font-size:1.8rem}}