:root{--bg:#f6f5f2;--panel:#fff;--ink:#1d1d1f;--muted:#6b6b70;--line:#e3e1dc;--accent:#5b4bd6;--accent-ink:#fff;--guide:#efedff;--me:#f1f0ec}
@media (prefers-color-scheme:dark){:root{--bg:#141416;--panel:#1c1c1f;--ink:#ececef;--muted:#9a9aa2;--line:#2c2c31;--accent:#8b7dff;--accent-ink:#111;--guide:#24213d;--me:#232327}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--panel);flex-wrap:wrap}
.brand{font-weight:700}.brand span{font-weight:400;color:var(--muted)}
.meta{display:flex;gap:8px;align-items:center}.pill{font-size:12px;padding:3px 9px;border:1px solid var(--line);border-radius:99px;color:var(--muted)}
main{max-width:1100px;margin:0 auto;padding:16px}
.card{max-width:420px;margin:48px auto;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px}
h1{font-size:22px;margin:0 0 4px}.sub{color:var(--muted);margin:0 0 16px}
label{display:block;font-size:13px;color:var(--muted);margin:10px 0}
input,textarea{width:100%;margin-top:4px;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit}
button{font:inherit;padding:10px 16px;border:0;border-radius:8px;background:var(--accent);color:var(--accent-ink);cursor:pointer;margin-top:8px}
button:disabled{opacity:.5;cursor:wait}button.link{background:none;color:var(--accent);padding:4px 0}
.msg{color:var(--muted);min-height:1.5em}.hidden{display:none!important}
.chat{display:grid;grid-template-columns:1fr 280px;gap:16px;height:calc(100vh - 90px)}
.convo{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:14px;min-height:0}
.log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.b{max-width:80%;padding:10px 13px;border-radius:12px;white-space:pre-wrap;word-wrap:break-word}
.b.guide{background:var(--guide);align-self:flex-start}.b.user{background:var(--me);align-self:flex-end}
.b.wait{color:var(--muted);font-style:italic}
.composer{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line);align-items:flex-end}.composer textarea{margin:0;resize:none}.composer button{margin:0}
.goals{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;overflow:auto}
.goals h2{font-size:14px;margin:0 0 8px;color:var(--muted)}.goals pre{white-space:pre-wrap;font:13px/1.5 inherit;margin:0}
@media (max-width:760px){.chat{grid-template-columns:1fr;height:auto}.convo{height:70vh}.b{max-width:92%}}

.alt { margin: .6rem 0 0; font-size: .9rem; }
.small { font-size: .8rem; opacity: .8; margin-top: 1rem; }