*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,sans-serif;background:#f6f7fb;color:#111;display:flex;flex-direction:column}
.app-header{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;align-items:center;padding:1rem 1.2rem;background:#0e7c86;color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.brand{display:flex;gap:.8rem;align-items:center}.brand .logo{font-size:2rem}.subtitle{margin:.2rem 0 0;opacity:.9}
.controls{display:flex;gap:.8rem;align-items:center;flex-wrap:wrap}
.controls .primary,.secondary{border:none;border-radius:12px;padding:.6rem .9rem;font-weight:600;cursor:pointer}
.primary{background:#ffd23f}.primary:hover{filter:brightness(1.05)}.secondary{background:#e8ecf3}.secondary:hover{filter:brightness(1.03)}
.toggle{display:flex;gap:.4rem;align-items:center;background:#095e65;padding:.3rem .5rem;border-radius:10px}
.toggle input{transform:scale(1.2)}
main{display:flex;flex-direction:column;gap:1rem;padding:1rem;max-width:1100px;margin:0 auto;flex:1;width:100%}
.status-card,.game-card,.pool-card{background:#fff;border-radius:16px;box-shadow:0 8px 24px rgba(0,0,0,.08);padding:1rem}
.status{display:flex;gap:1rem;font-weight:700;align-items:center}
.progress{height:10px;background:#eef2f9;border-radius:999px;overflow:hidden;margin-top:.4rem}
#progressBar{height:100%;width:0%;background:#0e7c86}
.sentence{font-size:1.6rem;line-height:2rem;padding:.6rem 0;min-height:3.6rem}
.sentence .token{padding:.15rem .2rem;border-radius:6px;margin:0 .05rem}
.sentence .target{background:#ffe8b2;border:2px solid #ffbf00;box-shadow:0 2px 0 #ffbf00aa}
.answers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem;margin-top:.6rem}
.answers .answer{padding:.7rem .8rem;border-radius:12px;border:2px solid #d0d7e2;background:#f2f6ff;font-weight:700;cursor:pointer;text-align:left}
.answers .answer:hover{filter:brightness(1.02)}.answers .key{font-weight:600;opacity:.55;margin-left:.4rem}
.help{margin-top:.4rem}.help .grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.4rem}.help .grid>div{background:#f7f9ff;border:1px dashed #cdd6ea;border-radius:10px;padding:.4rem .6rem}
.feedback{min-height:2.2rem;margin-top:.6rem;padding:.6rem .8rem;border-radius:12px;background:#f7fbf6;border:2px solid #cfe7cf;display:none}
.feedback.error{background:#fff5f5;border-color:#f2cccc}
.feedback-controls{display:flex;justify-content:flex-end;gap:.5rem;margin-top:.3rem}
.actions{display:flex;justify-content:flex-end;margin-top:.6rem}
.app-footer{padding:1rem;text-align:center;color:#333}
.pool-controls{display:flex;gap:.6rem;align-items:center;margin:.6rem 0}
.pool-controls input{flex:1;padding:.5rem;border:1px solid #ccd5e3;border-radius:10px}
.pool-list{display:grid;grid-template-columns:1fr;gap:.5rem}
.pool-item{padding:.5rem .6rem;border:1px solid #e6e9f1;border-radius:12px;background:#fafbff}
.pool-item .meta{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:.2rem}
/* Whiteboard mode */
.whiteboard body{background:#fff}.whiteboard .app-header{background:#0b5560}.whiteboard .sentence{font-size:2.2rem;line-height:2.6rem}.whiteboard .answers{grid-template-columns:repeat(3,minmax(0,1fr))}.whiteboard .answers .answer{font-size:1.2rem;padding:1rem}