/* Mission (game) styling. Tokens are plain values with a dark variant, so older phone browsers need no light-dark(). */
body.gamemode{background:var(--tg-bg,#f5f3fc)}
.mq-game{--tg-bg:#f5f3fc;--tg-surface:#fff;--tg-ink:#241e3f;--tg-muted:#5b5472;--tg-border:#d9d1ea;--tg-purple:#6734ce;--tg-onpurple:#fff;--tg-soft:#eee7ff;--tg-stage:#e9f7f6;--tg-water:#247fa4;--tg-waterlight:#92e0e8;--tg-outline:#24627a;--tg-orange:#9f4d11;--tg-orangebg:#fff0dd;--tg-good:#116c57;--tg-goodbg:#e3f5ec;--tg-ground:#c9e5e3;color:var(--tg-ink);font-family:ui-rounded,"Avenir Next",system-ui,sans-serif;margin:0 -16px;background:var(--tg-bg);min-height:100vh}
@media (prefers-color-scheme:dark){
  body.gamemode{background:#151321}
  .mq-game{--tg-bg:#151321;--tg-surface:#252136;--tg-ink:#f6f2ff;--tg-muted:#cbc2dc;--tg-border:#4d435c;--tg-purple:#bc9dff;--tg-onpurple:#23103e;--tg-soft:#38284f;--tg-stage:#142e34;--tg-water:#62cde6;--tg-waterlight:#246780;--tg-outline:#94ddeb;--tg-orange:#ffc28b;--tg-orangebg:#423021;--tg-good:#8de4bc;--tg-goodbg:#193c31;--tg-ground:#26464c}
}
.mq-game *{box-sizing:border-box}
.mq-game .tg-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:var(--tg-surface);border-bottom:1px solid var(--tg-border)}
.mq-game .tg-exit{white-space:nowrap;color:var(--tg-purple);font-weight:750;font-size:16px;text-decoration:none;min-height:44px;display:inline-flex;align-items:center;padding:0 6px}
.mq-game .tg-topic{min-width:0;color:var(--tg-purple);background:var(--tg-soft);padding:6px 10px;border-radius:8px;font-size:13px;font-weight:750;text-align:right}
.mq-game .tg-body{padding:18px 18px calc(28px + env(safe-area-inset-bottom));max-width:480px;margin:0 auto}
.mq-game .tg-meta{display:flex;justify-content:space-between;gap:12px;color:var(--tg-muted);font-size:12px;font-weight:750;letter-spacing:1px;text-transform:uppercase}
.mq-game .tg-progress{display:flex;gap:6px;margin:10px 0 20px}
.mq-game .tg-dot{height:6px;border-radius:6px;flex:1;background:var(--tg-border)}
.mq-game .tg-dot.is-done{background:var(--tg-purple)}
.mq-game h2{font-size:28px;line-height:1.15;letter-spacing:-.8px;margin:0 0 8px;font-weight:800;color:var(--tg-ink)}
.mq-game h2:focus{outline:none}
.mq-game p{font-size:17px;line-height:1.5;color:var(--tg-muted);margin:0 0 16px;overflow-wrap:anywhere}
.mq-game .tg-note{font-size:15px;margin:12px 0 0}
.mq-game .tg-repeat{font-size:15px;color:var(--tg-orange);background:var(--tg-orangebg);padding:8px 12px;border-radius:10px}
.mq-game .tg-stage{background:var(--tg-stage);border-radius:20px;overflow:hidden;margin:14px 0}
.mq-game .tg-stage svg{display:block;width:100%;height:auto;max-height:340px}
.mq-game .tg-stage text{font-family:inherit;font-size:16px;font-weight:750;fill:var(--tg-ink)}
.mq-game .tg-stage .tg-dim{stroke:var(--tg-outline);fill:none;stroke-width:2}
.mq-game .tg-stage .tg-wall{fill:var(--tg-surface);stroke:var(--tg-outline);stroke-width:2.5}
.mq-game .tg-stage .tg-math{font-size:14px;font-weight:600;fill:var(--tg-muted)}
.mq-game .tg-caption{font-size:13px;line-height:1.4;text-align:center;color:var(--tg-muted);padding:0 12px 12px}
.mq-game .tg-choices{display:grid;gap:10px;margin-top:14px}
.mq-game .tg-choices.tg-two{grid-template-columns:1fr 1fr}
.mq-game button{font:inherit}
.mq-game button:focus-visible,.mq-game input:focus-visible,.mq-game a:focus-visible{outline:3px solid var(--tg-orange);outline-offset:3px}
.mq-game .tg-choice{background:var(--tg-surface);border:2px solid var(--tg-border);border-radius:14px;color:var(--tg-ink);padding:12px 14px;min-height:54px;font-size:18px;font-weight:750;box-shadow:0 3px 0 var(--tg-border);cursor:pointer;text-align:left}
.mq-game .tg-choices.tg-two .tg-choice{text-align:center}
.mq-game .tg-choice[aria-pressed=true]{background:var(--tg-goodbg);border-color:var(--tg-good);box-shadow:0 3px 0 var(--tg-good);color:var(--tg-good)}
.mq-game .tg-choice[aria-pressed=true]::before{content:"✓ "}
.mq-game .tg-choice:disabled,.mq-game .tg-chip:disabled{cursor:default}
.mq-game .tg-primary{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--tg-purple);color:var(--tg-onpurple);border:0;border-radius:14px;padding:14px 17px;font-weight:750;font-size:17px;min-height:52px;box-shadow:0 4px 0 color-mix(in srgb,var(--tg-purple) 70%,var(--tg-ink));margin-top:14px;text-decoration:none;cursor:pointer}
.mq-game .tg-primary:disabled{background:var(--tg-border);color:var(--tg-muted);box-shadow:none;cursor:default}
.mq-game .tg-ghost{display:inline-flex;align-items:center;background:var(--tg-surface);border:1px solid var(--tg-border);border-radius:10px;min-height:44px;padding:10px 14px;color:var(--tg-ink);font-size:15px;font-weight:650;text-decoration:none;cursor:pointer}
.mq-game .tg-ghost:disabled{opacity:.5;cursor:default}
.mq-game .tg-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px}
.mq-game .tg-chips{gap:8px}
.mq-game .tg-chip{min-width:48px;min-height:48px;padding:8px 14px;border-radius:999px;border:2px solid var(--tg-border);background:var(--tg-surface);color:var(--tg-ink);font-size:18px;font-weight:750;cursor:pointer}
.mq-game .tg-chip[aria-pressed=true]{border-color:var(--tg-purple);background:var(--tg-soft);color:var(--tg-purple)}
.mq-game .tg-chip[aria-pressed=true]::before{content:"✓ "}
.mq-game .tg-equation{padding:12px 16px;background:var(--tg-surface);border:1px solid var(--tg-border);border-radius:13px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px}
.mq-game .tg-equation small{font-size:14px;color:var(--tg-muted)}
.mq-game .tg-equation strong{font-size:19px;color:var(--tg-ink);font-weight:750;font-variant-numeric:tabular-nums;text-align:right;overflow-wrap:anywhere}
.mq-game .tg-feedback{border-radius:13px;background:var(--tg-goodbg);color:var(--tg-good);font-size:16px;line-height:1.5;padding:12px 14px;margin-top:14px;overflow-wrap:anywhere}
.mq-game .tg-feedback.tg-clue{background:var(--tg-orangebg);color:var(--tg-orange)}
.mq-game .tg-answers{display:flex;align-items:center;gap:12px;margin:6px 0 4px}
.mq-game .tg-answers strong{font-size:20px;color:var(--tg-ink)}
.mq-game input[type=text]{font:inherit;font-size:22px;width:100%;min-width:0;background:var(--tg-surface);color:var(--tg-ink);border:2px solid var(--tg-border);border-radius:13px;padding:12px;min-height:52px}
.mq-game .tg-label{font-size:15px;font-weight:750;display:block;margin:14px 0 6px;color:var(--tg-ink)}
.mq-game .tg-badge{display:flex;align-items:center;justify-content:center;gap:9px;background:var(--tg-goodbg);color:var(--tg-good);border-radius:15px;padding:16px;font-weight:750;margin:14px 0}
@media (max-width:370px){.mq-game .tg-body{padding:16px 14px}.mq-game h2{font-size:25px}.mq-game .tg-choices.tg-two{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.mq-game *{transition:none!important;animation:none!important}}
.reduce .mq-game *{transition:none!important;animation:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.badge.mission{background:#EDE9FE;color:#5B21B6}

/* ---------- Responsive layout: phone (default) → tablet → desktop ---------- */
body.gamemode .shell{max-width:none;padding:0}
body.gamemode .notice{margin:8px 16px}
.mq-game{margin:0}
.mq-game .tg-choice:not(:disabled):hover,.mq-game .tg-chip:not(:disabled):hover{border-color:var(--tg-purple)}
.mq-game .tg-primary:not(:disabled):hover{filter:brightness(1.08)}
.mq-game .tg-ghost:hover{border-color:var(--tg-purple)}
@media (min-width:600px){
  .mq-game .tg-body{max-width:640px;padding:24px 28px 40px}
  .mq-game h2{font-size:32px}
  .mq-game .tg-header{padding:12px 28px}
}
/* Portrait tablets: one wider column, picture on top, so tall screens stay filled. */
@media (min-width:720px){
  .mq-game .tg-body{max-width:720px}
  .mq-game .tg-header{padding-inline:max(28px,calc((100% - 720px) / 2 + 28px))}
  .mq-game .tg-stage svg{max-height:440px}
}
/* Landscape tablets, landscape phones, monitors: the picture sits beside the controls and stays in view. */
@media (min-width:720px) and (min-aspect-ratio:1/1),(min-width:1000px){
  .mq-game .tg-body{max-width:1120px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);column-gap:28px;align-items:start;grid-template-areas:"head head" "vis ctrl"}
  .mq-game .tg-header{padding-inline:max(28px,calc((100% - 1120px) / 2 + 28px))}
  .mq-game .tg-head{grid-area:head}
  .mq-game .tg-visual{grid-area:vis;position:sticky;top:16px}
  .mq-game .tg-controls{grid-area:ctrl}
  .mq-game .tg-stage{margin:0}
  .mq-game .tg-stage svg{max-height:min(520px,calc(100vh - 150px))}
  .mq-game .tg-controls>:first-child{margin-top:0}
  .mq-game .tg-choices.tg-two{grid-template-columns:1fr 1fr}
}
/* Short landscape screens: picture gets the whole left column; title and controls stack on the right. */
@media (max-height:520px) and (min-width:720px) and (min-aspect-ratio:1/1){
  .mq-game .tg-header{padding-block:4px}
  .mq-game .tg-body{grid-template-areas:"vis head" "vis ctrl";grid-template-rows:auto 1fr;padding-top:12px;padding-bottom:20px}
  .mq-game .tg-visual{top:8px}
  .mq-game .tg-stage svg{max-height:calc(100vh - 80px)}
  .mq-game .tg-head h2{font-size:24px}
  .mq-game .tg-head p{font-size:16px;margin-bottom:10px}
  .mq-game .tg-progress{margin:8px 0 12px}
}
@media (min-width:1200px){
  .mq-game h2{font-size:38px}
  .mq-game p{font-size:19px}
  .mq-game .tg-body{column-gap:44px}
  .mq-game .tg-choice,.mq-game .tg-primary{font-size:19px}
}

/* ---------- Home and topic pages (same look as missions) ---------- */
.mq-game .tg-brand{font-size:18px;letter-spacing:-.7px;font-weight:800}
.mq-game .tg-brand span{color:var(--tg-purple)}
a.tg-topic{text-decoration:none;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:12px}
.mq-game .tg-page{max-width:480px;margin:0 auto;padding:18px 18px calc(32px + env(safe-area-inset-bottom))}
.mq-game h1{font-size:30px;line-height:1.15;letter-spacing:-.8px;margin:0 0 8px;font-weight:800;color:var(--tg-ink)}
.mq-game h1:focus{outline:none}
.mq-game .tg-h3{font-size:13px;letter-spacing:1px;text-transform:uppercase;color:var(--tg-muted);font-weight:750;margin:24px 0 10px;line-height:1.3}
.mq-game .tg-cards{display:grid;gap:12px;grid-template-columns:minmax(0,1fr);margin:0 0 6px}
.mq-game .tg-card{display:flex;align-items:center;gap:14px;background:var(--tg-surface);border:2px solid var(--tg-border);border-radius:18px;padding:14px 16px;min-height:72px;color:var(--tg-ink);text-decoration:none;box-shadow:0 3px 0 var(--tg-border)}
.mq-game .tg-card:hover{border-color:var(--tg-purple)}
.mq-game .tg-ico{flex:none;width:52px;height:52px;border-radius:14px;background:var(--tg-soft);display:grid;place-items:center;font-size:26px;font-weight:800;color:var(--tg-purple)}
.mq-game .tg-card-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.mq-game .tg-card-title{font-size:19px;font-weight:800;line-height:1.25;overflow-wrap:anywhere}
.mq-game .tg-card-sub{font-size:15px;line-height:1.4;color:var(--tg-muted);overflow-wrap:anywhere}
.mq-game .tg-chev{flex:none;color:var(--tg-purple);font-weight:800;font-size:22px}
.mq-game .tg-seg{display:flex;gap:4px;margin-top:8px}
.mq-game .tg-seg i{flex:1;height:6px;border-radius:6px;background:var(--tg-border)}
.mq-game .tg-seg i.on{background:var(--tg-purple)}
.mq-game .tg-pills{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.mq-game .tg-pill{font-size:13px;font-weight:750;padding:3px 10px;border-radius:999px;background:var(--tg-border);color:var(--tg-muted)}
.mq-game .tg-pill.prog{background:var(--tg-orangebg);color:var(--tg-orange)}
.mq-game .tg-pill.done{background:var(--tg-goodbg);color:var(--tg-good)}
.mq-game .tg-pill.mission{background:var(--tg-soft);color:var(--tg-purple)}
.mq-game .tg-card.tg-resume{background:var(--tg-purple);border-color:var(--tg-purple);color:var(--tg-onpurple);box-shadow:0 4px 0 color-mix(in srgb,var(--tg-purple) 70%,var(--tg-ink))}
.mq-game .tg-resume .tg-ico{background:color-mix(in srgb,var(--tg-onpurple) 20%,transparent);color:var(--tg-onpurple)}
.mq-game .tg-resume .tg-card-sub,.mq-game .tg-resume .tg-chev{color:var(--tg-onpurple)}
.mq-game .tg-callout{font-size:15px;color:var(--tg-orange);background:var(--tg-orangebg);padding:10px 14px;border-radius:12px}
@media (min-width:600px){
  .mq-game .tg-page{max-width:640px;padding:24px 28px 40px}
  .mq-game h1{font-size:36px}
  .mq-game .tg-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mq-game .tg-cards:has(.tg-resume){grid-template-columns:minmax(0,1fr)}
}
@media (min-width:720px){.mq-game .tg-page{max-width:720px}}
@media (min-width:720px) and (min-aspect-ratio:1/1),(min-width:1000px){
  .mq-game .tg-page{max-width:1120px}
  .mq-game .tg-cards{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
  .mq-game .tg-cards:has(.tg-resume){grid-template-columns:minmax(0,520px)}
}
@media (min-width:1200px){.mq-game h1{font-size:40px}}

/* ---------- Learn / Example / Try / quick check / review / summary / settings / reference ---------- */
.mq-game .tg-meta{flex-wrap:wrap;gap:2px 12px}
.mq-game .tg-dot.cur{background:var(--tg-purple);opacity:.5}
.mq-game .tg-eyebrow{font-size:13px;letter-spacing:1px;text-transform:uppercase;font-weight:750;color:var(--tg-purple);margin:0 0 6px;line-height:1.3}
.mq-game .tg-lead{font-size:18px;color:var(--tg-ink);font-weight:650}
.mq-game .tg-prompt{font-size:20px;line-height:1.45;color:var(--tg-ink);font-weight:650;margin:0 0 14px}
.mq-game p a,.mq-game .tg-note a{color:var(--tg-purple);font-weight:750}
.mq-game .tg-panel{background:var(--tg-surface);border:2px solid var(--tg-border);border-radius:18px;padding:16px;margin:0 0 14px;box-shadow:0 3px 0 var(--tg-border);overflow-wrap:anywhere}
.mq-game .tg-panel>:last-child{margin-bottom:0}
.mq-game .tg-panel b{color:var(--tg-ink);font-size:18px}
.mq-game .tg-cards>.tg-panel{margin:0}
.mq-game .tg-rule{background:var(--tg-soft);border-left:6px solid var(--tg-purple);border-radius:12px;padding:14px 16px;margin:14px 0;font-size:20px;font-weight:800;color:var(--tg-ink);overflow-wrap:anywhere}
.mq-game .tg-trap{background:var(--tg-orangebg);color:var(--tg-orange);border-radius:13px;padding:13px 15px;margin:14px 0;font-size:16px;line-height:1.5}
.mq-game .tg-steps{list-style:none;padding:0;margin:12px 0 0}
.mq-game .tg-steps li{background:var(--tg-bg);border:1px solid var(--tg-border);border-radius:12px;padding:10px 14px;margin:0 0 8px;font-size:17px;color:var(--tg-ink)}
.mq-game .tg-steps li.latest{background:var(--tg-soft);border-color:var(--tg-purple);font-weight:750}
.mq-game .tg-hint{background:var(--tg-soft);color:var(--tg-ink);border-radius:13px;padding:12px 14px;margin-top:14px;font-size:16px}
.mq-game .tg-feedback.tg-info{background:var(--tg-soft);color:var(--tg-ink)}
.mq-game .tg-feedback .tg-note{color:inherit;margin:8px 0 0}
.mq-game .tg-fieldset{border:0;padding:0;margin:0}
.mq-game .tg-fieldset legend{padding:0;margin:0 0 10px}
.mq-game .tg-radio{display:flex;align-items:center;gap:12px;min-height:54px;padding:10px 14px;border:2px solid var(--tg-border);border-radius:14px;margin:0 0 10px;background:var(--tg-surface);cursor:pointer;font-weight:750;font-size:18px;color:var(--tg-ink);box-shadow:0 3px 0 var(--tg-border)}
.mq-game .tg-radio input{width:24px;height:24px;flex:none;accent-color:var(--tg-purple)}
.mq-game .tg-radio:has(input:checked){border-color:var(--tg-purple);background:var(--tg-soft)}
.mq-game .tg-radio:has(input:focus-visible){outline:3px solid var(--tg-orange);outline-offset:3px}
.mq-game .tg-radio:hover{border-color:var(--tg-purple)}
.mq-game .tg-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;align-items:stretch}
.mq-game .tg-actions .tg-primary{margin-top:0;flex:1 1 220px;width:auto}
.mq-game .tg-actions .tg-ghost{justify-content:center;flex:0 1 auto}
.mq-game .tg-actions>:only-child{flex:1 1 100%}
.mq-game [data-danger]{border-color:var(--tg-orange);color:var(--tg-orange)}
.mq-game .tg-table{overflow-x:auto;margin:0 0 14px}
.mq-game table{border-collapse:collapse;width:100%;font-size:16px;color:var(--tg-ink)}
.mq-game th,.mq-game td{border:1px solid var(--tg-border);padding:8px 10px;text-align:left;overflow-wrap:anywhere}
.mq-game th{background:var(--tg-soft);color:var(--tg-purple)}
.mq-game .activity-text{font-weight:700;color:var(--tg-ink);min-height:3em}
.mq-game .tg-panel.activity .tg-h3{margin-top:0}

/* diagrams and activity widgets use the mission colour tokens (so they also work in dark mode) */
.mq-game .diagram{width:100%;height:auto;max-height:240px;display:block;margin:8px auto}
.mq-game .diagram .ln{stroke:var(--tg-outline);stroke-width:2;fill:none}
.mq-game .diagram .ln.dim{stroke:var(--tg-border)}
.mq-game .diagram .ln.hot{stroke:var(--tg-orange);stroke-width:3}
.mq-game .diagram .lbl,.mq-game .diagram text{font:750 15px ui-rounded,system-ui,sans-serif;fill:var(--tg-ink)}
.mq-game .diagram .face1{fill:var(--tg-waterlight);stroke:var(--tg-outline);stroke-width:2}
.mq-game .diagram .face2{fill:var(--tg-soft);stroke:var(--tg-outline);stroke-width:2}
.mq-game .diagram .face3{fill:var(--tg-water);fill-opacity:.55;stroke:var(--tg-outline);stroke-width:2}
.mq-game .diagram .cube{fill:var(--tg-water);fill-opacity:.8;stroke:var(--tg-outline);stroke-width:1.5}
.mq-game .diagram .on{fill:var(--tg-waterlight)}
.mq-game .diagram .off{fill:var(--tg-surface);fill-opacity:.6}
.mq-game .tg-stage .diagram{max-height:260px;margin:0 auto;padding:10px 0}
@media (min-width:600px){.mq-game .tg-prompt{font-size:22px}}
/* reading pages: narrower column on wide screens, header aligned to it */
@media (min-width:720px){
  .mq-game.tg-reading .tg-page{max-width:720px}
  .mq-game.tg-reading .tg-header{padding-inline:max(28px,calc((100% - 720px) / 2 + 28px))}
}

.mq-game .tg-answers strong{flex:none;white-space:nowrap}
.mq-game .tg-answers input{flex:1}