:root{--ink:#0e1117;--muted:#64748b;--line:#e2e8f0;--soft:#f8fafc;--accent:#e3175b;--accent-hover:#c4124d;--accent-soft:#fdeef3;--ok:#1f7a3d;--radius:10px}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.5;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit;color:inherit}a{color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 18px;border-radius:var(--radius);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.55;cursor:default}.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}.btn-ghost:hover{background:var(--soft)}.field{width:100%;height:48px;border:1px solid var(--line);border-radius:var(--radius);padding:0 14px;font-size:16px;background:#fff}.field:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.muted{color:var(--muted)}.error{color:#b4123f;font-size:14px}.auth{min-height:100%;display:grid;place-items:center;padding:24px 16px;background:var(--soft)}.auth-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px 24px}.auth-card img{height:26px;margin-bottom:22px}.auth-card h1{font-size:22px;margin:0 0 6px}.auth-card p{margin:0 0 18px}.auth-card form{display:grid;grid-gap:12px;gap:12px}.consent{display:flex;gap:10px;font-size:13px;color:var(--muted);align-items:flex-start}.consent input{width:18px;height:18px;margin-top:1px;accent-color:var(--accent);flex:none}.app{height:100dvh;display:grid;grid-template-columns:280px 1fr}.side{border-right:1px solid 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var(--line)}.menu-btn{display:none;border:0;background:none;font-size:22px;cursor:pointer;padding:4px 6px}.model-btn{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:7px 12px;cursor:pointer;text-align:left;min-width:0}.model-btn small{display:block;color:var(--muted);font-size:11px;line-height:1.2}.model-btn b{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}.balance{margin-left:auto;font-size:13px;font-weight:600;background:var(--accent-soft);color:var(--accent);padding:6px 11px;border-radius:999px;border:0;cursor:pointer;white-space:nowrap}.thread{flex:1 1;overflow:auto;padding:20px 16px 8px}.thread-inner{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px}.empty-state{max-width:560px;margin:8vh auto 0;text-align:center}.empty-state h2{font-size:24px;margin:0 0 8px}.starters{display:grid;grid-template-columns:1fr 1fr;grid-gap:8px;gap:8px;margin-top:18px}.starter{border:1px solid var(--line);border-radius:12px;padding:12px;background:#fff;cursor:pointer;text-align:left;font-size:14px}.starter:hover{border-color:#cbd5e1}.msg{max-width:100%}.msg.user{align-self:flex-end;background:var(--accent);color:#fff;padding:10px 14px;border-radius:16px 16px 4px 16px;max-width:85%;white-space:pre-wrap;word-break:break-word}.msg.assistant{align-self:stretch}.md{font-size:15.5px;line-height:1.6;word-break:break-word}.md p{margin:0 0 10px}.md pre{background:#0e1117;color:#e6e6e6;padding:12px 14px;border-radius:10px;overflow:auto;font-size:13px}.md code{background:var(--soft);border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:.92em}.md pre code{background:none;border:0;padding:0}.md ol,.md ul{margin:0 0 10px;padding-left:22px}.md h3{font-size:17px;margin:14px 0 6px}.msg-meta{display:flex;gap:14px;margin-top:4px}.msg-meta,.msg-meta button{font-size:12px;color:var(--muted)}.msg-meta button{border:0;background:none;padding:0;cursor:pointer}.msg-meta button:hover{color:var(--ink)}.img-out{max-width:min(480px,100%);border-radius:12px;border:1px solid var(--line);display:block}.typing{color:var(--muted);font-size:14px}.composer{border-top:1px solid var(--line);padding:10px 16px calc(12px + env(safe-area-inset-bottom))}.composer-inner{max-width:760px;margin:0 auto}.cost{font-size:12px;color:var(--muted);margin:0 4px 6px}.cost b{color:var(--ink)}.input-row{display:flex;gap:8px;align-items:flex-end}.input-row textarea{flex:1 1;resize:none;min-height:46px;max-height:200px;border:1px solid var(--line);border-radius:14px;padding:11px 14px;font-size:16px;line-height:1.4}.input-row textarea:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.send{width:46px;height:46px;border-radius:50%;border:0;background:var(--accent);color:#fff;font-size:20px;cursor:pointer;flex:none}.send:disabled{opacity:.5;cursor:default}.disclaimer{text-align:center;font-size:11px;color:var(--muted);margin-top:6px}.scrim{inset:0;background:rgba(14,17,23,.45);z-index:40}.scrim,.sheet{position:fixed}.sheet{z-index:41;left:50%;bottom:0;transform:translateX(-50%);width:min(560px,100%);max-height:88dvh;background:#fff;border-radius:22px 22px 0 0;display:flex;flex-direction:column}@media (min-width:761px){.sheet{bottom:auto;top:50%;transform:translate(-50%,-50%);border-radius:18px}}.sheet-body{overflow:auto;padding:18px 18px 22px}.sheet h2{font-size:18px;margin:0 0 12px}.tasks{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:8px;gap:8px;margin-bottom:14px}.task{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 4px 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summary{color:var(--muted);padding:8px 0}.all-models summary,.mini{cursor:pointer;font-size:14px}.mini{display:flex;justify-content:space-between;gap:10px;width:100%;border:0;border-bottom:1px solid var(--line);background:none;padding:10px 2px;text-align:left}.mini span:last-child{color:var(--muted);white-space:nowrap}.mini[aria-checked=true]{color:var(--accent);font-weight:600}.modal{position:fixed;z-index:41;left:50%;top:50%;transform:translate(-50%,-50%);width:min(420px,calc(100% - 32px));background:#fff;border-radius:16px;padding:22px;display:grid;grid-gap:12px;gap:12px}.modal h2{margin:0;font-size:19px}.ok{color:var(--ok);font-weight:600}@media (max-width:760px){.app{grid-template-columns:1fr}.side{position:fixed;inset:0 auto 0 0;width:82%;max-width:320px;z-index:30;transform:translateX(-100%);transition:transform .2s}.side.open{transform:none;box-shadow:0 0 0 100vmax rgba(14,17,23,.35)}.menu-btn{display:block}.starters{grid-template-columns:1fr}.tasks{grid-template-columns:repeat(4,1fr)}}