:root{--bg:#f6f4ef;--fg:#1d1b18;--muted:#6b665d;--card:#fff;--line:#e2ddd3;--accent:#2f6fdb;--ok:#2b8a3e;--warn:#c77700;--bad:#c92a2a;--code:#f0ede6;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#15171a;--fg:#ecebe7;--muted:#9a978f;--card:#1f2226;--line:#30343a;--accent:#5b93f0;--ok:#51cf66;--warn:#fcc419;--bad:#ff6b6b;--code:#262a2f;color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
#app{max-width:760px;margin:0 auto;padding:16px}
h1{font-size:1.4rem;margin:0}
h2{font-size:1rem;margin:0 0 8px}
.sub{color:var(--muted);margin:2px 0 0;font-size:.9rem}
header{margin-bottom:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:4px;font-size:.9rem}
.checks li{display:flex;gap:8px;align-items:baseline}
.checks .dot{flex:none;width:10px;height:10px;border-radius:50%;transform:translateY(1px);background:var(--muted)}
.checks .ok .dot{background:var(--ok)}
.checks .warn .dot{background:var(--warn)}
.checks .bad .dot{background:var(--bad)}
.checks small{color:var(--muted)}
.field{display:grid;gap:4px;font-size:.85rem;color:var(--muted)}
select,textarea{font:inherit;font-size:16px;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px;width:100%;min-width:0}
textarea{resize:vertical}
.hint{color:var(--muted);font-size:.85rem;margin:6px 0 0}
button{font:inherit;color:inherit;cursor:pointer}
button:disabled{opacity:.45;cursor:default}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:10px}
.primary{background:var(--fg);color:var(--bg);border:0;border-radius:8px;padding:10px 16px;font-weight:600}
.ghost{background:none;border:1px solid var(--line);border-radius:8px;padding:10px 16px}
.progress{margin-top:10px}
.bar{height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.bar span{display:block;height:100%;width:0;background:var(--accent);transition:width .2s}
.tabs{display:flex;gap:6px;margin-bottom:10px}
.tab{background:none;border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-size:.9rem;color:var(--muted)}
.tab.on{background:var(--fg);border-color:var(--fg);color:var(--bg)}
.log{display:grid;gap:10px;max-height:55vh;overflow:auto;padding:2px}
.log:empty::before{content:"Lataa malli ja kirjoita jotain.";color:var(--muted);font-size:.9rem}
.msg{padding:10px 12px;border-radius:10px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.95rem}
.msg.user{background:var(--code);justify-self:end;max-width:85%}
.msg.ai{border:1px solid var(--line)}
.msg.err{border:1px solid var(--bad);color:var(--bad)}
.msg pre{background:var(--code);padding:8px;border-radius:6px;overflow:auto;font-size:.8rem;white-space:pre;margin:6px 0}
.think{color:var(--muted);font-size:.85rem;border-left:3px solid var(--line);padding-left:8px;margin-bottom:6px}
.composer{margin-top:10px}
.stats{color:var(--muted);font-size:.8rem;margin-left:auto;font-variant-numeric:tabular-nums}
.examples{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.examples button{background:none;border:1px dashed var(--line);border-radius:999px;padding:4px 10px;font-size:.8rem;color:var(--muted)}
.preview-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.preview-head .actions{margin-top:0}
#preview{width:100%;height:420px;border:1px solid var(--line);border-radius:8px;background:#fff;margin-top:10px}