:root{--bg:#0a0912;--card:#15121f;--line:#2a2540;--tx:#f1edff;--mut:#8f88a8;--ac:#a78bfa;--on:#0a0912}
[data-theme=light]{--bg:#f6f4fb;--card:#fff;--line:#e5e1f0;--tx:#1a1530;--mut:#6b6485;--ac:#6d3df0;--on:#fff}
[data-theme=bw]{--bg:#000;--card:#101010;--line:#333;--tx:#fff;--mut:#999;--ac:#fff;--on:#000}
*{box-sizing:border-box;margin:0}
body{font:16px/1.5 system-ui,"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;background:var(--bg);color:var(--tx);padding-bottom:calc(110px + env(safe-area-inset-bottom))}
main{max-width:880px;margin:auto;padding:20px 16px}
h2{margin:6px 0 14px;font-weight:700}h3{font-size:.9rem;color:var(--mut);margin-bottom:6px;font-weight:600}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;margin-bottom:12px}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px}.c{text-align:center}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.grid .card{margin:0}
button{background:var(--ac);color:var(--on);border:0;border-radius:12px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;margin:8px 8px 0 0}
button.g{background:transparent;color:var(--tx);border:1px solid var(--line)}
button:focus-visible,input:focus-visible,select:focus-visible,.tb:focus-visible{outline:2px solid var(--ac);outline-offset:2px}
input,select{width:100%;background:var(--bg);color:var(--tx);border:1px solid var(--line);border-radius:12px;padding:11px 14px;font:inherit;margin:8px 0}
.mut{color:var(--mut)}.big{font-size:1.8rem;font-weight:700}.tag{font-size:.75rem;color:var(--ac);border:1px solid var(--line);border-radius:99px;padding:2px 10px;white-space:nowrap}
.bar{height:10px;background:var(--line);border-radius:9px;overflow:hidden}.bar i{display:block;height:100%;background:var(--ac);transition:width .5s}
.q{font-size:1.9rem;text-align:center;margin:8px 0}.ok{color:#4ade80}.no{color:#f87171}.kb{font-size:3rem;line-height:1;margin-right:14px}
[data-theme=bw] .ok,[data-theme=bw] .no{color:#fff}
.msg{padding:10px 14px;border-radius:14px;margin:6px 0;white-space:pre-wrap}.msg.user{background:var(--ac);color:var(--on);margin-left:20%}.msg.assistant{background:var(--card);border:1px solid var(--line);margin-right:12%}
.bars{display:flex;gap:8px;height:120px}.col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center}.col i{width:100%;background:var(--ac);border-radius:6px 6px 0 0;min-height:2px}
.toast{position:fixed;top:16px;left:50%;transform:translateX(-50%);background:var(--ac);color:var(--on);padding:8px 16px;border-radius:99px;z-index:9;font-weight:600}
#tabs{position:fixed;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));background:var(--card);border:1px solid var(--line);border-radius:22px;display:flex;padding:8px 4px;z-index:5;box-shadow:0 10px 30px #0006}
.tb{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.7rem;color:var(--mut);cursor:pointer}
.tb i{font-style:normal;font-size:1.3rem;width:40px;height:40px;display:grid;place-items:center;border-radius:50%;transition:transform .25s,background .25s}
.tb span{transition:transform .25s}
.tb.on{color:var(--tx)}.tb.on i{background:var(--ac);color:var(--on);transform:translateY(-16px);box-shadow:0 0 0 6px var(--bg)}.tb.on span{transform:translateY(-14px)}
#side{display:none}
#mc{position:fixed;right:14px;bottom:100px;z-index:4;pointer-events:none;display:flex;flex-direction:column;align-items:flex-end}
.bub{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 10px;font-size:.8rem;opacity:0;transition:opacity .3s}
.cat .e{display:none}.cat .o,.cat.sleep .s,.cat.happy .h{display:block}.cat.sleep .o,.cat.happy .o{display:none}
.cat .z{opacity:0}.cat.sleep .z{opacity:1;animation:zz 2s infinite}
.cat{animation:fl 3s ease-in-out infinite}.cat.happy{animation:bn .5s 3}.cat.think{animation:none;transform:rotate(-8deg)}.cat.sleep{animation:br 3s infinite}.cat.study{animation:fl 1.4s infinite}
@keyframes fl{50%{transform:translateY(-3px)}}@keyframes bn{50%{transform:translateY(-12px)}}@keyframes br{50%{transform:scale(1.04)}}@keyframes zz{50%{transform:translateY(-6px);opacity:.3}}
@media(prefers-reduced-motion){*{animation:none!important;transition:none!important}}
@media(min-width:900px){#tabs{display:none}body{padding:0}main{margin-left:230px;max-width:none;padding:28px 40px}#mc{bottom:20px}.grid{grid-template-columns:repeat(4,1fr)}
#side{display:block;position:fixed;inset:0 auto 0 0;width:230px;padding:20px 12px;border-right:1px solid var(--line);background:var(--card)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.1em;margin:0 8px 18px}.logo img{border-radius:10px}
.sb{display:flex;gap:12px;padding:10px 14px;border-radius:12px;cursor:pointer;color:var(--mut)}.sb i{font-style:normal;width:20px;text-align:center}.sb.on{background:var(--bg);color:var(--ac)}}