/* practice page */
.fine{font-size:.85rem;color:var(--faint);margin-top:10px!important}
.practice{display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:start;padding-bottom:56px}
.brief,.call{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow)}
.brief{padding:24px}
.brief h2{font:600 1.05rem "Instrument Sans",sans-serif;margin:0 0 14px}
.brief dl{margin:0}
.brief dt{font:500 .7rem/1 "JetBrains Mono",ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-top:14px}
.brief dd{margin:6px 0 0;color:var(--ink);font-size:.95rem}
.tip{margin:18px 0 0;padding:12px 14px;border-radius:10px;background:var(--accent-soft);color:var(--ink);font-size:.9rem}
.call{display:flex;flex-direction:column;min-height:560px;overflow:hidden}
.call-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--rule)}
.who{display:flex;align-items:center;gap:12px}
.who strong{display:block;font-weight:600}
.who span{font-size:.85rem;color:var(--muted)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid!important;place-items:center;font:600 .85rem "Instrument Sans",sans-serif}
.linkbtn{white-space:nowrap;background:none;border:0;color:var(--accent);font:inherit;font-size:.9rem;cursor:pointer;text-decoration:underline;text-underline-offset:3px;padding:4px}
.log{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px;max-height:520px;min-height:300px}
.sys{margin:auto 0 0;text-align:center;font-size:.88rem;color:var(--faint)}
.bubble{max-width:80%;padding:10px 14px;border-radius:14px;white-space:pre-wrap;overflow-wrap:anywhere}
.bubble.me{align-self:flex-end;background:var(--accent);color:var(--on-accent);border-bottom-right-radius:4px}
.bubble.them{align-self:flex-start;background:var(--ground);border:1px solid var(--rule);border-bottom-left-radius:4px}
.bubble.typing{color:var(--faint);font-style:italic}
.bubble.err{align-self:center;background:transparent;color:#B3261E;font-size:.9rem}
:root[data-theme="dark"] .bubble.err{color:#F2B8B5}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .bubble.err{color:#F2B8B5}}
.composer{border-top:1px solid var(--rule);padding:14px 16px;display:flex;flex-direction:column;gap:10px}
.composer textarea{width:100%;resize:vertical;min-height:52px;font:inherit;color:var(--ink);background:var(--ground);border:1px solid var(--rule);border-radius:10px;padding:10px 12px}
.composer textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
.composer-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{border:0;cursor:pointer}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.coach{border-top:1px solid var(--rule);padding:20px}
.coach h3{font:600 1.05rem "Instrument Sans",sans-serif;margin:0 0 6px}
.coach .overall{color:var(--muted);margin:0 0 16px}
.score{display:grid;grid-template-columns:170px 92px 1fr;gap:4px 14px;align-items:start;padding:10px 0;border-top:1px solid var(--rule);font-size:.93rem}
.score .name{font-weight:600}
.dots{display:flex;gap:5px;padding-top:6px}
.dots i{width:12px;height:12px;border-radius:50%;background:var(--rule)}
.dots i.on{background:var(--accent)}
.score .ev{color:var(--muted)}
.callouts{display:grid;gap:10px;margin-top:16px}
.callouts p{margin:0;padding:12px 14px;border-radius:10px;background:var(--accent-soft);font-size:.93rem}
.callouts strong{display:block;font:500 .7rem/1.4 "JetBrains Mono",ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.design{padding-bottom:72px;max-width:900px}
.design h2{font:600 1.05rem "Instrument Sans",sans-serif;margin:0 0 20px;padding-bottom:12px;border-bottom:1px solid var(--rule)}
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:24px}
.cols h3{font:600 .98rem "Instrument Sans",sans-serif;margin:0 0 6px}
.cols p{margin:0;color:var(--muted);font-size:.93rem}
details{background:var(--surface);border-radius:12px;box-shadow:var(--shadow);margin-bottom:12px}
summary{cursor:pointer;padding:14px 18px;font-weight:600}
details[open] summary{border-bottom:1px solid var(--rule)}
.rubric{width:100%;border-collapse:collapse;font-size:.93rem}
.rubric th,.rubric td{text-align:left;padding:10px 18px;border-bottom:1px solid var(--rule);vertical-align:top}
.rubric th{font:500 .7rem/1 "JetBrains Mono",ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.rubric td:first-child{font-weight:600;white-space:nowrap}
.guide{margin:0;padding:14px 18px 16px 40px;display:grid;gap:8px;font-size:.93rem;color:var(--muted)}
.guide strong{color:var(--ink)}
@media (max-width:900px){
  .practice{grid-template-columns:1fr}
  .cols{grid-template-columns:1fr}
  .score{grid-template-columns:1fr 92px}
  .score .ev{grid-column:1/-1}
}
@media (max-width:480px){
  .rubric td:first-child{white-space:normal}
  .bubble{max-width:92%}
}

/* hub */
.hub{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;padding-bottom:40px}
.sim{display:flex;flex-direction:column;gap:10px;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;text-decoration:none;transition:box-shadow .15s ease,transform .15s ease}
.sim:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.sim .label{color:var(--accent)}
.sim h2{font:400 1.6rem/1.1 "Instrument Serif",Georgia,serif;margin:0}
.sim p{margin:0;color:var(--muted);font-size:.95rem}
.sim .meta{margin-top:auto;padding-top:10px;border-top:1px solid var(--rule);font-size:.85rem;color:var(--faint)}
.sim .go{color:var(--accent);font-weight:600;font-size:.92rem}
.approach{max-width:900px;padding-bottom:72px}
.approach h2{font:600 1.05rem "Instrument Sans",sans-serif;margin:0 0 20px;padding-bottom:12px;border-bottom:1px solid var(--rule)}
.back{display:inline-block;margin-bottom:14px;font-size:.9rem;color:var(--muted);text-decoration:none}
.back:hover{color:var(--ink)}

/* prompt lab */
.lab{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start;padding-bottom:56px}
.panel{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;min-width:0}
.panel h2{font:600 1.05rem "Instrument Sans",sans-serif;margin:0 0 10px}
.panel p{margin:0 0 12px;color:var(--muted);font-size:.93rem}
.sop{font:500 .8rem/1.55 "JetBrains Mono",ui-monospace,monospace;white-space:pre-wrap;background:var(--ground);border:1px solid var(--rule);border-radius:10px;padding:14px;max-height:430px;overflow:auto;color:var(--ink);margin:0}
#labform textarea{width:100%;min-height:190px;resize:vertical;font:inherit;color:var(--ink);background:var(--ground);border:1px solid var(--rule);border-radius:10px;padding:10px 12px}
#labform textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
.lab-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:10px}
.lab-row .chars{margin-left:auto;font-size:.8rem;color:var(--faint)}
.outhead{display:flex;justify-content:space-between;align-items:baseline;margin:20px 0 8px}
.outhead h3{font:600 .98rem "Instrument Sans",sans-serif;margin:0}
.outhead span{font-size:.8rem;color:var(--faint)}
.lab-out{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--ground);border:1px solid var(--rule);border-radius:10px;padding:14px;font-size:.93rem;max-height:520px;overflow:auto}
.lab-out.typing{color:var(--faint);font-style:italic}
.lab-out.err{color:#B3261E}
.panel .coach{padding:20px 0 0;margin-top:20px}
@media (max-width:900px){.lab{grid-template-columns:1fr}}
.brief-dl{margin:0 0 4px}
.brief-dl dt{font:500 .7rem/1 "JetBrains Mono",ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-top:14px}
.brief-dl dd{margin:6px 0 0;color:var(--ink);font-size:.95rem}