/* Activity pages */
.top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 0}
.top .brand{font-size:1.25rem}.top .brand .mark{width:32px;height:32px}
.starbar{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--ink);background:#fff;border-radius:999px;padding:6px 14px;box-shadow:0 4px 0 var(--line)}
.mute{border:0;background:#fff;border-radius:999px;width:40px;height:40px;font-size:1.1rem;cursor:pointer;box-shadow:0 4px 0 var(--line)}
.prog{height:14px;background:#fff;border-radius:999px;overflow:hidden;border:2px solid var(--line);margin:8px 0 18px}
.prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--coral),var(--sun),var(--grass));transition:width .35s}
.q{font-size:clamp(1.3rem,3.2vw,1.7rem);margin:0 0 18px}
.q .big{display:block;font-size:2.6rem;letter-spacing:.1em;margin-top:6px;line-height:1.3}
.opts{display:grid;gap:10px}
.opts.two{grid-template-columns:1fr 1fr}
.opt{display:flex;align-items:center;gap:12px;text-align:left;width:100%;background:#F7FAFF;border:3px solid var(--line);border-radius:16px;padding:14px 16px;font:inherit;font-size:1.1rem;font-weight:800;color:var(--text);cursor:pointer;transition:transform .08s}
.opt:hover{border-color:var(--ocean);transform:translateY(-2px)}
.opt .k{flex:0 0 32px;height:32px;border-radius:10px;background:#fff;border:2px solid var(--line);display:grid;place-items:center;font-size:.9rem;color:var(--muted)}
.opt.correct{background:#E7F5EC;border-color:var(--grass);color:#1F5C3A}.opt.correct .k{background:var(--grass);border-color:var(--grass);color:#fff}
.opt.wrong{background:#FBEAE8;border-color:var(--coral);color:#7A2119;animation:shake .35s}.opt.wrong .k{background:var(--coral);border-color:var(--coral);color:#fff}
.opt[disabled]{cursor:default}.opt[disabled]:not(.correct):not(.wrong){opacity:.5}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.seq{display:flex;flex-wrap:wrap;gap:8px;min-height:56px;padding:10px;border:3px dashed var(--line);border-radius:16px;margin-bottom:12px;background:#FAFCFF}
.seq:empty::before{content:"Tap the pieces below in the right order.";color:var(--muted);font-weight:600}
.chip{background:var(--grape);color:#fff;border:0;border-radius:12px;padding:10px 14px;font:inherit;font-weight:800;cursor:pointer}
.chip.pool{background:#fff;color:var(--ink);border:3px solid var(--line)}.chip.pool:hover{border-color:var(--grape)}
.chip.ok{background:var(--grass)}.chip.bad{background:var(--coral)}
.pool{display:flex;flex-wrap:wrap;gap:8px}
.buckets{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin-bottom:12px}
.bucket{border:3px dashed var(--line);border-radius:16px;padding:10px;min-height:90px;background:#FAFCFF}
.bucket h4{margin:0 0 8px;font-family:"Baloo 2";font-weight:600;color:var(--ink)}
.bucket.target{border-color:var(--grape);background:#F5F0FF}
.bucket .chip{margin:3px}
.fill{display:flex;gap:10px}.fill input{flex:1;font:inherit;font-size:1.3rem;font-weight:800;padding:12px 16px;border-radius:14px;border:3px solid var(--line);text-align:center}
.fb{margin-top:16px;padding:14px 16px;border-radius:14px;font-weight:700;display:none}
.fb.show{display:block}.fb.hit{background:#E7F5EC;color:#1F5C3A}.fb.miss{background:#FBEAE8;color:#7A2119}
.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px;flex-wrap:wrap}
.btn[hidden]{display:none}
.score{font-family:"Baloo 2";font-size:3.6rem;color:var(--ink);line-height:1;margin:6px 0}
.score small{font-size:1.1rem;color:var(--muted);font-family:"Nunito";font-weight:800}
.starburst{font-size:2.4rem;letter-spacing:.05em;margin:6px 0 12px}
.missed{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.missed li{background:#FBEAE8;border-radius:12px;padding:10px 14px;font-size:.95rem}.missed li b{display:block;color:#7A2119}
.streak{display:inline-block;background:var(--sun);color:var(--ink);border-radius:999px;padding:2px 10px;font-weight:900;font-size:.85rem;margin-left:8px;animation:pop .3s}
@keyframes pop{0%{transform:scale(.5)}70%{transform:scale(1.2)}100%{transform:scale(1)}}
/* map */
.gradebar{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 14px}
.gradebar .gb{border:0;border-radius:999px;padding:10px 16px;font:inherit;font-weight:900;cursor:pointer;background:#fff;color:var(--ink);box-shadow:0 4px 0 var(--line)}
.gradebar .gb.active{background:var(--ink);color:#fff;box-shadow:0 4px 0 #0e1a33}
.subbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.subbar .sb{border:2px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font:inherit;font-weight:800;cursor:pointer}
.subbar .sb.active{border-color:var(--ink);background:var(--ink);color:#fff}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.act{display:flex;flex-direction:column;gap:8px;border-top:8px solid var(--line);cursor:pointer;transition:transform .1s}
.act:hover{transform:translateY(-4px)}
.act.ela{border-color:var(--ela)}.act.math{border-color:var(--math)}.act.science{border-color:var(--science)}.act.social{border-color:var(--social)}
.act .emoji{font-size:2.2rem}.act h3{font-size:1.15rem}.act .meta{display:flex;gap:8px;align-items:center;font-size:.85rem;margin-top:auto}
.act code{font-size:.72rem;color:var(--muted);background:#F1F5FB;padding:2px 6px;border-radius:5px}
/* game */
.arena{text-align:center}
.hud{display:flex;justify-content:space-between;align-items:center;font-weight:900;color:var(--ink);margin-bottom:10px}
.timer{height:16px;background:#fff;border:3px solid var(--line);border-radius:999px;overflow:hidden}
.timer i{display:block;height:100%;width:100%;background:var(--grass);transition:width .25s linear}
.timer i.low{background:var(--coral)}
.prob{font-family:"Baloo 2";font-size:clamp(3rem,10vw,5rem);color:var(--ink);margin:24px 0 10px}
.combo{font-weight:900;color:var(--grape);height:28px}
.pad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:340px;margin:12px auto}
.pad button{font:inherit;font-size:1.6rem;font-weight:800;padding:16px 0;border-radius:16px;border:0;background:#fff;box-shadow:0 5px 0 var(--line);cursor:pointer;color:var(--ink)}
.pad button:active{transform:translateY(4px);box-shadow:none}
.pad .go{background:var(--grass);color:#fff;box-shadow:0 5px 0 #348F4D}
.answer{font-family:"Baloo 2";font-size:2.4rem;min-height:56px;color:var(--ocean)}
.word-in{font:inherit;font-size:1.8rem;font-weight:800;text-align:center;letter-spacing:.15em;padding:12px;border-radius:16px;border:3px solid var(--line);width:min(420px,90%);text-transform:lowercase}
.scramble{font-family:"Baloo 2";font-size:2.4rem;letter-spacing:.35em;color:var(--grape);margin:20px 0 6px}
.hint{color:var(--muted);font-weight:700;margin-bottom:14px}
/* curriculum */
.cur-subj{margin-bottom:14px;padding:0}
.cur-subj summary{list-style:none;cursor:pointer;display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 22px;font-size:1.05rem}
.cur-subj summary::-webkit-details-marker{display:none}
.cur-subj summary b{font-family:"Baloo 2";font-weight:700;font-size:1.15rem;color:var(--ink)}
.cur-cov{margin-left:auto;font-weight:700}
.cur-subj[open] summary{border-bottom:2px dashed var(--line)}
.cur-strand{padding:14px 22px 6px}
.cur-strand h3{font-size:1.05rem;margin:0 0 8px;color:var(--grape)}
.cur-ses{margin:0;padding:0;list-style:none}
.cur-ses li{padding:8px 0;border-bottom:1px solid var(--line);font-size:.95rem;line-height:1.5}
.cur-ses li:last-child{border:0}
.cur-id{font-weight:900;color:var(--ink);margin-right:4px}
.cur-acts{margin-top:6px;display:flex;flex-wrap:wrap;gap:6px}
.cur-acts .btn.sm{padding:6px 12px;font-size:.85rem}