/* English Quests app styles. Components use semantic tokens only (tokens.css). Adapted from design/mockups.html. */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--color-bg); font: var(--fw-regular) var(--fs-body)/var(--lh-body) var(--font-text); color: var(--color-text); -webkit-tap-highlight-color: transparent; }
button, input { font-family: inherit; }
button { -webkit-appearance: none; appearance: none; }
a { color: inherit; }
/* ================= App components ================= */
.app { max-width: 520px; margin: 0 auto; min-height: 100vh; min-height: 100dvh; background: var(--color-surface); position: relative; overflow-x: hidden; font: var(--fw-regular) var(--fs-body)/var(--lh-body) var(--font-text); color: var(--color-text); }
.hero {
  background: var(--hero-bg); color: var(--hero-fg);
  padding: calc(var(--safe-top) + var(--content-top) + 8px) var(--gutter) calc(var(--radius-sheet) + 24px);
  position: relative; overflow: hidden;
}
.sheet {
  position: relative; z-index: 2; margin-top: calc(-1 * var(--radius-sheet));
  background: var(--color-surface); border-radius: var(--radius-sheet) var(--radius-sheet) 0 0;
  padding: var(--space-6) var(--gutter) calc(var(--safe-bottom) + 112px);
}
.sheet > * + * { margin-top: var(--space-3); }
.sheet > .section-title { margin-top: var(--space-8); }

.eyebrow { font: var(--fw-semibold) var(--fs-small)/var(--lh-small) var(--font-text); color: var(--hero-fg-muted, var(--color-text-muted)); margin: 0 0 var(--space-2); }
.muted { color: var(--color-text-muted); }
.small { font-size: var(--fs-small); line-height: var(--lh-small); }
.micro { font-size: var(--fs-micro); line-height: var(--lh-micro); }
h1, h2, h3, p { margin: 0; }
.h1 { font: var(--fw-heavy) var(--fs-h1)/var(--lh-h1) var(--title-font); letter-spacing: -.01em; }
[data-volume="teen"] .h1 { font-size: 24px; line-height: 1.2; letter-spacing: 0; }
.h2 { font: var(--fw-bold) var(--fs-h2)/var(--lh-h2) var(--font-text); letter-spacing: -.01em; }
.h3 { font: var(--fw-bold) var(--fs-h3)/var(--lh-h3) var(--font-text); }
.section-title { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.section-title .link { font: var(--fw-semibold) var(--fs-small)/1 var(--font-text); color: var(--color-brand); }

.card { background: var(--color-surface-muted); border-radius: var(--radius-lg); padding: var(--space-5); }
.card--accent { background: var(--card-accent-bg); color: var(--card-accent-fg); }
.card--accent .muted { color: var(--ink-700); }
.card--line { background: var(--color-surface); border: 1.5px solid var(--color-border); }
.row { display: flex; align-items: center; gap: var(--space-3); }
.grow { flex: 1; min-width: 0; } /* any flex row: text takes the space, chevrons and badges sit at the edge */
.chip { display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 12px; border-radius: var(--radius-pill); font: var(--fw-semibold) 13px/1 var(--font-text); background: var(--color-surface-sunken); color: var(--color-text); white-space: nowrap; }
.chip--on-hero { background: rgba(255,255,255,.16); color: var(--hero-fg); }
[data-volume="adult"] .chip--on-hero { background: var(--color-brand-soft); color: var(--color-brand); }
.chip--brand { background: var(--color-brand); color: var(--color-on-brand); }
.chip--ink { background: var(--ink-900); color: var(--white); }
.meta { display: inline-flex; align-items: center; gap: 6px; font: var(--fw-medium) var(--fs-small)/1 var(--font-text); }
.lvl { display: inline-flex; align-items: flex-end; gap: 2px; height: 12px; }
.lvl b { width: 4px; border-radius: 1px; background: currentColor; opacity: .25; }
.lvl b:nth-child(1) { height: 5px; opacity: 1; } .lvl b:nth-child(2) { height: 8px; opacity: 1; } .lvl b:nth-child(3) { height: 12px; }

.btn { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; height: var(--btn-h); border: 0; border-radius: var(--radius-btn); font: var(--fw-bold) 17px/1 var(--font-text); cursor: pointer; }
.btn--primary { background: var(--color-brand); color: var(--color-on-brand); }
.btn--soft { background: var(--color-brand-soft); color: var(--color-brand); }
.btn--ghost { background: transparent; color: var(--color-text); border: 1.5px solid var(--color-border-strong); }
.btn--sm { height: var(--touch); font-size: 15px; width: auto; padding: 0 18px; }
.btn-row { display: flex; gap: var(--space-2); }
.btn-row .btn { flex: 1; }
.dock { position: fixed; z-index: 10; left: 50%; transform: translateX(-50%); width: 100%; max-width: 520px; bottom: 0; padding: 12px var(--gutter) calc(var(--safe-bottom) + 8px); background: linear-gradient(to top, var(--color-surface) 70%, rgba(255,255,255,0)); }

.play { flex: none; width: 56px; height: 56px; border-radius: 50%; background: var(--color-brand); display: grid; place-items: center; }
.play::before { content: ""; margin-left: 4px; border-left: 16px solid var(--color-on-brand); border-top: 10px solid transparent; border-bottom: 10px solid transparent; }
.chev { flex: none; width: 10px; height: 10px; border-right: 2px solid var(--color-text-muted); border-top: 2px solid var(--color-text-muted); transform: rotate(45deg); margin-right: 4px; }
.check { display: inline-block; width: 12px; height: 7px; border-left: 2.5px solid currentColor; border-bottom: 2.5px solid currentColor; transform: rotate(-45deg) translate(1px, -1px); }

.avatar { width: var(--touch); height: var(--touch); border-radius: 50%; display: grid; place-items: center; font: 700 17px/1 var(--font-text); background: var(--color-brand); color: var(--color-on-brand); flex: none; }

/* Illustration placeholders: owner-drawn assets go here (see ASSETS.md) */
.ph { flex: none; display: grid; place-items: center; text-align: center; padding: 6px; border-radius: 20px; background: var(--color-placeholder); border: 1.5px dashed var(--color-border-strong); color: var(--color-placeholder-ink); font: 600 11px/1.25 var(--font-text); }
.ph--hero { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.45); color: var(--brand-100); }
[data-volume="adult"] .ph--hero { background: rgba(47,91,255,.06); border-color: var(--brand-300); color: var(--brand-700); }
.ph--icon { border-radius: 12px; font-size: 9px; padding: 2px; }
.ph--round { border-radius: 50%; }

/* Progress */
.bar { height: 10px; border-radius: 5px; background: var(--color-surface-sunken); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 5px; background: var(--color-brand); }
.card--accent .bar { background: rgba(21,20,43,.12); }
.card--accent .bar > i { background: var(--ink-900); }

/* Weekly rhythm */
.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; }
.week span { font: 600 13px/1 var(--font-text); color: var(--color-text-muted); }
.week span.today { color: var(--color-text); }
.day { margin: 8px auto 0; width: 40px; height: 40px; border-radius: 50%; border: 2.5px solid var(--color-border-strong); display: grid; place-items: center; }
.day.done { background: var(--color-brand); border-color: var(--color-brand); color: var(--color-on-brand); }
.day.today { border-style: dashed; border-color: var(--color-brand); }

/* Bottom pill nav (js/navbar.js): frosted bar + one sliding blob behind the active tab; press-and-drag lifts it into a lens */
.nav { position: fixed; z-index: 15; left: 50%; transform: translateX(-50%); width: min(calc(100% - 2 * var(--gutter)), 488px); bottom: max(12px, calc(var(--safe-bottom) - 10px)); height: 68px; padding: 6px; border-radius: var(--radius-pill); background: var(--color-surface); box-shadow: var(--shadow-float); display: flex; gap: 4px; touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .nav { background: rgba(255,255,255,.72); -webkit-backdrop-filter: blur(18px) saturate(1.8); backdrop-filter: blur(18px) saturate(1.8); box-shadow: var(--shadow-float), inset 0 0 0 1px rgba(255,255,255,.6); }
}
.nav a { position: relative; z-index: 1; cursor: pointer; flex: 1; min-width: 0; border-radius: var(--radius-pill); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; font: 600 12px/1 var(--font-text); color: var(--color-text-muted); text-decoration: none; -webkit-user-drag: none; }
.nav a i { width: 24px; height: 24px; background: currentColor; -webkit-mask: var(--icon) center / 24px 24px no-repeat; mask: var(--icon) center / 24px 24px no-repeat; }
.nav a.on { color: var(--nav-active-fg); }
.nav a.on i { -webkit-mask-image: var(--icon-on); mask-image: var(--icon-on); }
.nav-blob { position: absolute; z-index: 0; left: 0; top: 6px; bottom: 6px; width: 0; border-radius: var(--radius-pill); background: var(--nav-active-bg); pointer-events: none; will-change: transform; }
/* lifted: a glass lens over the bar; the tab under it lights up, the old active tab goes quiet */
.nav--lifted .nav-blob { background: rgba(255,255,255,.28); box-shadow: inset 0 1px 1px rgba(255,255,255,.9), inset 0 -1px 2px rgba(20,26,51,.10), inset 0 0 0 1px rgba(47,91,255,.18), 0 10px 24px rgba(20,26,51,.18); -webkit-backdrop-filter: blur(3px) saturate(1.9) brightness(1.05); backdrop-filter: blur(3px) saturate(1.9) brightness(1.05); }
.nav--lifted a.on:not(.near) { color: var(--color-text-muted); }
.nav--lifted a.on:not(.near) i { -webkit-mask-image: var(--icon); mask-image: var(--icon); }
.nav--lifted a.near { color: var(--color-brand); }
.nav--lifted a.near i { -webkit-mask-image: var(--icon-on); mask-image: var(--icon-on); }

/* Segmented control */
.seg { display: flex; height: var(--touch); padding: 4px; border-radius: var(--radius-pill); background: var(--color-surface-sunken); }
.seg span { flex: 1; display: grid; place-items: center; border-radius: var(--radius-pill); font: 600 14px/1 var(--font-text); color: var(--color-text-muted); }
.seg span.on { background: var(--color-surface); color: var(--color-text); box-shadow: 0 1px 3px rgba(21,20,43,.12); }

/* Big number */
.mega { font: 900 var(--fs-mega)/var(--lh-mega) var(--font-display); color: var(--hero-number); letter-spacing: -.03em; }

/* ---- a) Invite ---- */
.invite .hero { height: 400px; display: grid; place-items: center; }
.invite .deco { position: absolute; background: var(--color-accent); }
.invite .deco.c1 { width: 88px; height: 88px; border-radius: 50%; left: -24px; top: 150px; }
.invite .deco.c2 { width: 56px; height: 56px; border-radius: 16px; right: 34px; top: 118px; transform: rotate(14deg); }
.invite .deco.c3 { width: 180px; height: 180px; border-radius: 50%; right: -70px; bottom: 30px; background: var(--brand-500); }
.perks { list-style: none; padding: 0; margin: var(--space-5) 0 0; display: grid; gap: var(--space-3); }
.perks li { display: flex; align-items: center; gap: var(--space-3); font-weight: 500; }

/* ---- c) Teen home ---- */
.countdown { display: flex; align-items: flex-end; justify-content: space-between; gap: 8px; margin-top: var(--space-4); }
.countdown .mega { font-size: 96px; }
.countdown .lbl { font: 700 20px/1.15 var(--font-display); margin-top: var(--space-2); }
.ct-grid { display: grid; grid-template-columns: repeat(9, 1fr); gap: 4px; }
.ct-grid b { height: 32px; border-radius: var(--radius-xs); display: grid; place-items: center; font: 600 12px/1 var(--font-text); background: var(--scale-0); color: var(--color-text-muted); }
.ct-grid b.s3 { background: var(--scale-3); color: var(--scale-3-ink); }
.ct-grid b.s1 { background: var(--scale-1); color: var(--scale-1-ink); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font: 500 var(--fs-micro)/1 var(--font-text); color: var(--color-text-muted); }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 4px; vertical-align: -2px; margin-right: 6px; }

/* ---- d) Quest player ---- */
.task { font: 500 var(--fs-task)/2.05 var(--font-text); }
.gap { white-space: nowrap; }
.gap b { font-weight: 700; }
.gap input { font: 600 var(--fs-task)/1 var(--font-text); color: var(--color-text); height: 36px; padding: 0 6px; margin-left: 1px; border-radius: var(--radius-xs); border: 2px solid var(--color-border-strong); background: var(--color-surface); vertical-align: 1px; }
.gap input.ok { border-color: var(--color-success); background: var(--color-success-soft); color: var(--color-success); }
.gap input.oops { border-color: var(--color-oops-border); background: var(--color-oops-soft); color: var(--color-oops); }
.gap input.focus { border-color: var(--color-brand); box-shadow: 0 0 0 4px var(--color-brand-soft); }
.hint { border-radius: var(--radius-md); padding: var(--space-4); background: var(--color-oops-soft); color: var(--ink-900); display: flex; gap: var(--space-3); }
.hint .ico { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--color-oops); color: #fff; display: grid; place-items: center; font: 800 15px/1 var(--font-text); }
.hint b { color: var(--color-oops); }
.pb-row { display: flex; align-items: center; gap: var(--space-3); }
.pb-row .bar { flex: 1; height: 12px; }
.pb-row .bar i { border-radius: 6px; }


/* ---- shell / additions ---- */
.hero { min-height: 160px; }
.sheet { min-height: 60vh; }
.sheet--dock { padding-bottom: calc(var(--safe-bottom) + 112px); }
.invite .hero { min-height: 340px; display: grid; place-items: center; }
.center { display: grid; place-items: center; text-align: center; }
.stack > * + * { margin-top: var(--space-3); }
.tile { display: flex; align-items: center; gap: var(--space-3); min-height: 64px; padding: 12px var(--space-4); border-radius: var(--radius-md); background: var(--color-surface-muted); width: 100%; border: 0; text-align: left; font: inherit; color: inherit; cursor: pointer; text-decoration: none; }
.tile .done { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--color-success-soft); color: var(--color-success); display: grid; place-items: center; }
.tile .todo { flex: none; width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--color-border-strong); }
.card.tap { cursor: pointer; }
.linkback { display: inline-flex; align-items: center; min-height: var(--touch); padding: 0 12px 0 0; border: 0; background: none; font: var(--fw-semibold) var(--fs-small)/1 var(--font-text); color: var(--hero-fg); cursor: pointer; }
.err { border-radius: var(--radius-md); padding: var(--space-4); background: var(--color-oops-soft); }
.ct-grid b { min-width: 0; }
.day { border-radius: 50%; }
.q-count { font: var(--fw-heavy) 32px/1 var(--font-display); color: var(--color-brand); }

/* player */
.flash { display: block; width: 100%; min-height: 220px; padding: var(--space-6) var(--space-5); border: 0; text-align: center; cursor: pointer; font: inherit; color: inherit; }
.flash .front { font: var(--fw-bold) 26px/1.25 var(--font-text); overflow-wrap: anywhere; }
.flash .back { margin-top: var(--space-4); font: var(--fw-medium) var(--fs-body)/1.4 var(--font-text); overflow-wrap: anywhere; }
.flash .ex { margin-top: var(--space-3); font: var(--fw-regular) var(--fs-small)/1.4 var(--font-text); color: var(--color-text-muted); font-style: italic; }
.flash .tip { margin-top: var(--space-5); font: var(--fw-semibold) var(--fs-small)/1 var(--font-text); color: var(--color-brand); }
.task { overflow-wrap: anywhere; line-height: 2.4; }
.gap input { height: 44px; min-width: 0; font-weight: 600; }
.field { width: 100%; height: 52px; padding: 0 var(--space-4); border-radius: var(--radius-md); border: 2px solid var(--color-border-strong); background: var(--color-surface); font: var(--fw-semibold) var(--fs-h3)/1 var(--font-text); color: var(--color-text); }
.field:focus, .gap input:focus { outline: 0; border-color: var(--color-brand); box-shadow: 0 0 0 4px var(--color-brand-soft); }
.field.ok, .gap input.ok { border-color: var(--color-success); background: var(--color-success-soft); color: var(--color-success); }
.field.oops, .gap input.oops { border-color: var(--color-oops-border); background: var(--color-oops-soft); color: var(--color-oops); }
.opts { display: grid; gap: var(--space-2); }
.opt { display: flex; align-items: center; width: 100%; text-align: left; min-height: 56px; padding: 10px var(--space-4); border-radius: var(--radius-md); border: 2px solid var(--color-border); background: var(--color-surface); font: 600 17px/1.25 var(--font-text); color: var(--color-text); cursor: pointer; overflow-wrap: anywhere; }
.opt:disabled { cursor: default; }
.opt.ok { border-color: var(--color-success); background: var(--color-success-soft); color: var(--color-success); }
.opt.oops { border-color: var(--color-oops-border); background: var(--color-oops-soft); color: var(--color-oops); }
.opt.dim { opacity: .55; }
.ok-line { display: flex; align-items: center; gap: 8px; color: var(--color-success); font: var(--fw-semibold) var(--fs-small)/1.35 var(--font-text); }
.hint { overflow-wrap: anywhere; }
.readtext { font: var(--fw-regular) 18px/1.55 var(--font-text); overflow-wrap: anywhere; }
.q-tip { font: var(--fw-medium) var(--fs-small)/1.4 var(--font-text); color: var(--color-text-muted); }
.btn:disabled { opacity: .5; cursor: default; }
.btn { text-decoration: none; }
.hero .bar { background: rgba(21,20,43,.1); }
[data-volume="teen"] .hero .bar { background: rgba(255,255,255,.2); }
[data-volume="teen"] .hero .bar > i { background: var(--color-accent); }
@media (prefers-reduced-motion: no-preference) { .bar > i { transition: width var(--dur) var(--ease); } }

/* ---- f) Teacher panel (from design/mockups.html screen f) ---- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-2); margin-top: var(--space-5); }
.stats div { background: var(--color-surface); border-radius: var(--radius-md); padding: 14px 12px; min-width: 0; }
.stats b { display: block; font: 800 32px/1 var(--font-display); color: var(--color-brand); }
.stats span { font: 500 13px/1.2 var(--font-text); color: var(--color-text-muted); }
.counts { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2); }
.counts div { background: rgba(255,255,255,.6); border-radius: var(--radius-sm); padding: 10px 12px; font: 500 14px/1.2 var(--font-text); min-width: 0; }
.counts b { display: block; font: 800 24px/1 var(--font-display); margin-bottom: 4px; }
.fixrow { display: flex; align-items: center; gap: var(--space-3); min-height: var(--touch); padding: 10px 14px; border-radius: var(--radius-sm); background: var(--color-surface); font: 600 14px/1.3 var(--font-text); color: inherit; text-decoration: none; }
.fixrow .dot { flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--color-oops); }
.list { background: var(--color-surface-muted); border-radius: var(--radius-lg); padding: 4px var(--space-4); }
.list .item { display: flex; align-items: center; gap: var(--space-3); min-height: 64px; padding: 10px 0; color: inherit; text-decoration: none; }
.list .item + .item { border-top: 1px solid var(--color-border-strong); }
.list .item .grow { overflow-wrap: anywhere; }
.gbadge { flex: none; width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; font: 800 13px/1 var(--font-display); background: var(--color-brand-soft); color: var(--color-brand); overflow: hidden; }
.section-title a.link { display: inline-flex; align-items: center; min-height: var(--touch); padding: 0 4px; text-decoration: none; }
.h3s { font: var(--fw-bold) 16px/1.25 var(--font-text); }
.heat-scroll { overflow-x: auto; }
.heat { display: grid; gap: 4px; align-items: stretch; }
.heat .hd { font: 700 13px/1 var(--font-text); text-align: center; padding: 4px 0 6px; color: var(--color-text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.heat .tag { font: 600 13px/1.25 var(--font-text); padding: 6px 4px 6px 0; display: flex; flex-direction: column; justify-content: center; min-width: 0; overflow-wrap: anywhere; }
.heat .tag span { font-weight: 500; color: var(--color-text-muted); }
.heat .c { border-radius: var(--radius-xs); min-height: 48px; display: grid; place-items: center; font: 700 14px/1 var(--font-text); background: var(--scale-0); color: var(--color-text-muted); }
.heat .c.l1 { background: var(--scale-1); color: var(--scale-1-ink); }
.heat .c.l2 { background: var(--scale-2); color: var(--scale-2-ink); }
.heat .c.l3 { background: var(--scale-3); color: var(--scale-3-ink); }
.heat-wrap.busy { opacity: .5; }
.seg button { flex: 1; min-height: 44px; border: 0; background: transparent; border-radius: var(--radius-pill); font: 600 14px/1 var(--font-text); color: var(--color-text-muted); cursor: pointer; padding: 0; }
.seg button.on { background: var(--color-surface); color: var(--color-text); box-shadow: 0 1px 3px rgba(21,20,43,.12); }
.seg--tap { height: 52px; }
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.cbtn { min-height: var(--touch); padding: 0 16px; border-radius: var(--radius-sm); border: 2px solid var(--color-border-strong); background: var(--color-surface); font: 600 15px/1.2 var(--font-text); color: var(--color-text); cursor: pointer; overflow-wrap: anywhere; text-align: left; }
.cbtn[aria-pressed="true"] { border-color: var(--color-brand); background: var(--color-brand); color: var(--color-on-brand); }
.vh { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); border: 0; }
.filepick { position: relative; display: flex; align-items: center; gap: var(--space-3); min-height: 64px; padding: 12px var(--space-4); border-radius: var(--radius-md); border: 2px dashed var(--color-border-strong); background: var(--color-surface); font: 600 16px/1.3 var(--font-text); cursor: pointer; overflow-wrap: anywhere; }
.filepick:focus-within { border-color: var(--color-brand); }
.filepick.has { border-style: solid; border-color: var(--color-brand); }
.actrow { display: flex; align-items: center; gap: var(--space-3); width: 100%; min-height: 64px; padding: 10px var(--space-4); border: 0; border-radius: var(--radius-md); background: var(--color-surface-muted); text-align: left; font: inherit; color: inherit; cursor: pointer; }
.actrow .grow { min-width: 0; overflow-wrap: anywhere; }
.actrow.off .grow { opacity: .5; }
.actrow:disabled { cursor: default; }
.sw { flex: none; width: 52px; height: 32px; border-radius: 16px; background: var(--color-border-strong); position: relative; }
.sw::after { content: ""; position: absolute; top: 3px; left: 3px; width: 26px; height: 26px; border-radius: 50%; background: var(--color-surface); box-shadow: 0 1px 3px rgba(21,20,43,.25); }
.actrow[aria-checked="true"] .sw { background: var(--color-brand); }
.actrow[aria-checked="true"] .sw::after { left: 23px; }
@media (prefers-reduced-motion: no-preference) { .sw, .sw::after { transition: all var(--dur-fast) var(--ease); } }
.optchip { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 48px; padding: 8px var(--space-3); border-radius: var(--radius-sm); border: 2px solid var(--color-border-strong); background: var(--color-surface); font: 500 15px/1.3 var(--font-text); color: var(--color-text); text-align: left; cursor: pointer; overflow-wrap: anywhere; }
.optchip b { flex: none; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--color-surface-sunken); font: 700 12px/1 var(--font-text); }
.optchip[aria-pressed="true"] { border-color: var(--color-brand); background: var(--color-brand); color: var(--color-on-brand); }
.optchip[aria-pressed="true"] b { background: var(--color-accent); color: var(--color-on-accent); }
.linkbox { padding: 12px var(--space-4); border-radius: var(--radius-sm); background: var(--color-surface); border: 1.5px solid var(--color-border-strong); font: 600 15px/1.35 var(--font-text); overflow-wrap: anywhere; user-select: all; -webkit-user-select: all; }
.miniprog { display: flex; align-items: center; gap: 10px; }
.miniprog .bar { flex: 1; height: 8px; }
.miniprog span { flex: none; font: 600 13px/1 var(--font-text); color: var(--color-text-muted); }
.unk-lines { margin: 6px 0 0; padding: 0; list-style: none; font: 400 14px/1.35 var(--font-text); color: var(--color-text-muted); overflow-wrap: anywhere; }
.msg { font: 500 14px/1.35 var(--font-text); color: var(--color-oops); }
.msg--ok { color: var(--color-success); }
[hidden] { display: none !important; }

/* teacher: what's inside an activity */
.actblock { background: var(--color-surface-muted); border-radius: var(--radius-md); }
.actblock .actrow { background: transparent; }
.actdetails { padding: 0 var(--space-4) var(--space-3); }
.actdetails summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; font-weight: 600; color: var(--color-brand); }
.actitems { margin: 0 0 var(--space-3); padding-left: 20px; display: grid; gap: 10px; overflow-wrap: anywhere; }
.actitems .ans { color: var(--color-brand); font-weight: 700; }
.passage { margin-bottom: var(--space-3); }
.passage summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; font-weight: 600; color: var(--color-brand); }
.passage p { margin: var(--space-2) 0 0; line-height: 1.5; }

/* gem import (teacher) + fill task (student) */
.pastebox { display: block; width: 100%; min-height: 148px; padding: 12px var(--space-4); border-radius: var(--radius-md); border: 2px solid var(--color-border-strong); background: var(--color-surface); font: 500 16px/1.4 var(--font-text); color: var(--color-text); resize: vertical; box-sizing: border-box; }
.pastebox:focus { outline: 0; border-color: var(--color-brand); box-shadow: 0 0 0 4px var(--color-brand-soft); }
.gemsum { overflow-wrap: anywhere; }
.gemsum ul { margin: 6px 0 0; padding-left: 18px; display: grid; gap: 4px; }
.improw { display: flex; align-items: center; gap: var(--space-3); padding: 10px var(--space-4); border-radius: var(--radius-md); background: var(--color-surface-muted); }
.improw > div { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.steps { margin: 0; padding-left: 22px; display: grid; gap: 12px; overflow-wrap: anywhere; }
.blank { display: inline-block; min-width: 3.2em; height: 1em; border-bottom: 3px solid var(--color-border-strong); vertical-align: -3px; margin: 0 2px; }

/* ---- e) Live quiz (mockup e) + teacher big screen ---- */
.chip--live { background: var(--color-accent); color: var(--color-on-accent); }
.live .hero { padding-bottom: calc(var(--radius-sheet) + 28px); }
.ring { position: relative; width: 132px; height: 132px; flex: none; }
.ring svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.ring .track { stroke: rgba(255,255,255,.18); }
.ring .arc { stroke: var(--hero-number); }
[data-volume="adult"] .ring .track { stroke: rgba(47,91,255,.12); }
.ring .n { position: absolute; inset: 0; display: grid; place-items: center; font: 800 44px/1 var(--font-display); color: var(--hero-number); text-align: center; }
.ring .n small { display: block; font: 600 12px/1 var(--font-text); color: var(--hero-fg-muted); margin-top: 4px; text-align: center; }
@media (prefers-reduced-motion: no-preference) { .ring .arc { transition: stroke-dashoffset .25s linear; } }
.ring--big { width: 168px; height: 168px; }
.ring--big .n { font-size: 56px; }
.opt .k { flex: none; width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; margin-right: var(--space-3); background: var(--color-surface-sunken); font: 700 14px/1 var(--font-text); color: var(--color-text-muted); }
.opt .lbl { min-width: 0; }
.opt .tag { margin-left: auto; padding-left: var(--space-3); font: 600 12px/1 var(--font-text); color: var(--color-brand); white-space: nowrap; }
.opt.sel { border-color: var(--color-brand); background: var(--color-brand-softer); }
.opt.sel .k { background: var(--color-brand); color: var(--color-on-brand); }
.opt.sel:disabled, .opt.dim:disabled { color: var(--color-text); }
.opt--static { cursor: default; }
.dots { display: flex; flex-wrap: wrap; gap: 6px; }
.dots i { width: 14px; height: 14px; border-radius: 50%; background: var(--color-surface-sunken); }
.dots i.on { background: var(--color-brand); }
.q-text { font: 700 22px/1.35 var(--font-text); overflow-wrap: anywhere; }
.q-text u { text-decoration: none; display: inline-block; min-width: 64px; border-bottom: 3px solid var(--color-brand); height: 1em; vertical-align: -2px; }
.live .q-text + .opts, .live .q-text + .card, .live .q-text + .stack { margin-top: var(--space-4); }
.hero-title { font: var(--fw-bold) 18px/1.3 var(--font-text); }
.livebanner { text-decoration: none; color: inherit; }
.livebanner .h3 { margin-top: 8px; }
.livebanner .small { margin-top: 2px; }

/* answer distribution + team scores */
.dopt { position: relative; display: flex; align-items: center; gap: var(--space-3); min-height: 56px; padding: 8px var(--space-4); border-radius: var(--radius-md); border: 2px solid var(--color-border); background: var(--color-surface); overflow: hidden; font: 600 17px/1.25 var(--font-text); overflow-wrap: anywhere; }
.dopt > i { position: absolute; left: 0; top: 0; bottom: 0; background: var(--color-brand-soft); z-index: 0; }
.dopt > :not(i) { position: relative; z-index: 1; }
.dopt .k { flex: none; width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: var(--color-surface); font: 700 14px/1 var(--font-text); color: var(--color-text-muted); }
.dopt .tag { padding-left: var(--space-2); font: 600 12px/1 var(--font-text); color: var(--color-brand); white-space: nowrap; }
.dopt .n { margin-left: auto; font: 800 20px/1 var(--font-display); }
.dopt .lbl { min-width: 0; }
.dopt.ok { border-color: var(--color-success); }
.dopt.ok > i { background: var(--color-success-soft); }
.tboard { display: grid; gap: var(--space-2); }
.trow { display: grid; grid-template-columns: minmax(96px, 30%) 1fr auto; align-items: center; gap: var(--space-3); min-height: var(--touch); font: 600 15px/1.2 var(--font-text); }
.trow .bar { height: 14px; }
.trow.mine .tn { color: var(--color-brand); }
.trow b { font: 800 18px/1 var(--font-display); min-width: 2.5ch; text-align: right; }
.podium { display: flex; align-items: flex-end; justify-content: center; gap: var(--space-2); padding-top: var(--space-3); }
.podium .pl { flex: 1 1 0; max-width: 168px; min-width: 0; text-align: center; overflow-wrap: anywhere; }
.podium .blk { margin: 6px 0; border-radius: var(--radius-md) var(--radius-md) 0 0; background: var(--color-brand-soft); color: var(--color-brand); display: grid; place-items: center; font: 800 15px/1 var(--font-text); }
.podium .pl.first .blk { background: var(--color-accent); color: var(--color-on-accent); }
.podium .pl.mine .blk { box-shadow: inset 0 0 0 3px var(--color-brand); }
.strong { font-weight: 700; }

/* teacher run view: lobby lists, who-answered, final by-question lines */
.tcols { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--space-2); }
.tcol { padding: var(--space-4); min-width: 0; }
.names { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-2); }
.sheet > .names { margin-top: var(--space-3); }
.pname { display: inline-flex; align-items: center; min-height: var(--touch); padding: 0 14px; border-radius: var(--radius-pill); background: var(--color-brand-soft); color: var(--color-brand); border: 0; font: 600 15px/1 var(--font-text); overflow-wrap: anywhere; }
button.pname { cursor: pointer; }
.who { margin: var(--space-2) 0 0; padding: 0; list-style: none; display: grid; gap: 6px; font: 500 14px/1.3 var(--font-text); color: var(--color-text-muted); }
.who li.yes { color: var(--color-text); font-weight: 600; }
.qline { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); min-height: var(--touch); padding: 8px var(--space-4); border-radius: var(--radius-md); background: var(--color-surface-muted); overflow-wrap: anywhere; }
.qline b { flex: none; font: 800 18px/1 var(--font-display); }

@media (min-width: 900px) {
  .live--wide { max-width: 1080px; }
  .live--wide .dock { max-width: 1080px; }
  .live--wide .hero { min-height: 0; padding-left: 40px; padding-right: 40px; padding-bottom: calc(var(--radius-sheet) + 12px); }
  .live--wide .sheet { padding-left: 40px; padding-right: 40px; min-height: 0; }
  .live--wide .h1 { font-size: 40px; }
  .live--wide .mega { font-size: 120px; }
  .live--wide .hero-title { font-size: 26px; }
  .live--wide .q-text { font-size: 34px; }
  .live--wide .opts--grid { grid-template-columns: 1fr 1fr; }
  .live--wide .opt, .live--wide .dopt { min-height: 72px; font-size: 24px; }
  .live--wide .dopt .n { font-size: 28px; }
  .live--wide .trow { font-size: 20px; }
  .live--wide .opts:not(.opts--grid) { max-width: 760px; }
}

/* owner's art (web/img): object-fit keeps any aspect; soft shadows ground the cut-out objects and the mascot */
.art { display: block; object-fit: contain; flex: none; pointer-events: none; user-select: none; }
.art--mascot { filter: drop-shadow(0 10px 14px rgba(8,20,90,.28)); }
.art:not(.art--mascot) { filter: drop-shadow(0 6px 8px rgba(20,26,51,.14)); }
.perks .art { margin: -4px 0; }

/* owner "view as student": back-to-teacher pill above the nav (outside #app, see owner.js) */
.viewpill { position: fixed; z-index: 30; right: var(--gutter); bottom: calc(max(12px, calc(var(--safe-bottom) - 10px)) + 80px); display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 9px 16px; border: 0; border-radius: 18px; background: var(--ink-900); color: #fff; font: 600 14px/1.1 var(--font-text); box-shadow: var(--shadow-float); cursor: pointer; }
.viewpill .small { font-size: 11px; font-weight: 500; opacity: .7; }

/* ================= Motion =================
   One spring for things that move, one ease-out for things that appear. Everything is off with reduced motion. */
:root { --spring: cubic-bezier(.34, 1.36, .64, 1); --ease-out: cubic-bezier(.22, 1, .36, 1); }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes dock-in { from { opacity: 0; translate: 0 18px; } to { opacity: 1; translate: 0 0; } }
@keyframes pop { 0% { scale: 1; } 40% { scale: 1.035; } 100% { scale: 1; } }
@keyframes sway { 0%, 100% { translate: 0 0; } 25% { translate: -4px 0; } 60% { translate: 3px 0; } 85% { translate: -1px 0; } }

@media (prefers-reduced-motion: no-preference) {
  /* nav blob: slides with a little overshoot; the lens grows/shrinks the same way */
  .nav-blob { transition: transform .5s var(--spring), width .5s var(--spring), scale .35s var(--spring), background-color .25s ease, box-shadow .25s ease; }
  .nav--lifted .nav-blob { transition: transform .09s linear, scale .12s ease-out, background-color .2s ease, box-shadow .2s ease; }
  .nav--instant .nav-blob { transition: none; }
  .nav a { transition: color .3s ease, scale .25s var(--spring); }
  .nav a:active { scale: .92; }
  .nav--lifted a:active { scale: 1; }

  /* screen entrance: hero content fades, sheet blocks rise one after another (mount() adds .enter for ~0.7 s) */
  .app.enter .hero > * { animation: fade .45s var(--ease-out) both; }
  .app.enter .sheet > * { animation: rise .5s var(--ease-out) both; }
  .app.enter .sheet > :nth-child(2) { animation-delay: .05s; }
  .app.enter .sheet > :nth-child(3) { animation-delay: .1s; }
  .app.enter .sheet > :nth-child(4) { animation-delay: .15s; }
  .app.enter .sheet > :nth-child(5) { animation-delay: .2s; }
  .app.enter .sheet > :nth-child(n+6) { animation-delay: .24s; }
  .app.enter .dock { animation: dock-in .45s var(--ease-out) .12s both; }
  .art--mascot { animation: rise .6s var(--spring) .08s both; }

  /* quest player: each new item and the verdict under it slide in */
  .sheet.swap > * { animation: rise .38s var(--ease-out) both; }
  .flash > div:not([hidden]) { animation: rise .32s var(--ease-out) both; }

  /* press feedback: things under the finger sink a little and spring back */
  .btn, .tile, .opt, .card.tap, a.card, .actrow, .cbtn, .optchip, .play, .list .item, .fixrow, .pname, .flash, .seg button, .improw, .linkback {
    transition: scale .28s var(--spring), background-color .2s ease, border-color .2s ease, color .2s ease, opacity .2s ease, box-shadow .2s ease;
  }
  .btn:active:not(:disabled), .opt:active:not(:disabled), .cbtn:active, .optchip:active, .seg button:active, .pname:active, .play:active { scale: .96; }
  .tile:active, .card.tap:active, a.card:active, .actrow:active:not(:disabled), .list .item:active, .fixrow:active, .flash:active { scale: .98; }

  /* answers: right = small pop, not yet = soft sway (never a harsh shake) */
  .opt.ok, .field.ok, .gap input.ok { animation: pop .42s var(--spring); }
  .opt.oops, .field.oops, .gap input.oops { animation: sway .45s ease-in-out; }
  .opt.dim { transition: opacity .3s ease, scale .28s var(--spring); }
  .day.done { animation: pop .5s var(--spring) both; }
}