:root {
  --ground: #f2f6f3;
  --ink: #13261f;
  --muted: #55675f;
  --card: #ffffff;
  --line: #d6e1db;
  --green: #078566;
  --green-deep: #05634c;
  --gold: #f2c14e;
  --right: #0b7a4b;
  --wrong: #b23a3a;
  --a: #078566;
  --b: #1a64d0;
  --c: #6d34d1;
  --d: #b8601a;
  --shadow: 0 1px 2px rgb(19 38 31 / 0.06), 0 6px 20px rgb(19 38 31 / 0.06);
  --display: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0e1513; --ink: #e5efe9; --muted: #9aaba3; --card: #17201c; --line: #2a3832;
    --shadow: none; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ground: #0e1513; --ink: #e5efe9; --muted: #9aaba3; --card: #17201c; --line: #2a3832;
  --shadow: none; color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--ground); color: var(--ink); font: 17px/1.55 var(--body); min-height: 100vh; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.12; margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--b); outline-offset: 2px; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

/* Bar */
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 20px; max-width: 1400px; margin: 0 auto; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none;
  font-family: var(--display); font-weight: 600; font-size: 20px; }
.brand b { color: var(--green); font-weight: 700; }
.mark { width: 30px; height: 30px; border-radius: 8px; background: url("/icon.png") center/cover; box-shadow: 0 1px 3px rgb(0 0 0 / 0.15); }
#nav { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
#nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 15px; white-space: nowrap;
  padding: 7px 12px; border-radius: 99px; }
#nav a:hover { color: var(--green); background: color-mix(in srgb, var(--green) 8%, transparent); }
#nav a[aria-current="page"] { color: var(--green); background: color-mix(in srgb, var(--green) 12%, transparent); }
@media (max-width: 520px) {
  .bar { padding: 10px 12px; }
  .brand .word { display: none; }
  #nav a { padding: 6px 9px; font-size: 14px; }
}

/* Shared pieces */
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 24px; box-shadow: var(--shadow); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 12px;
  padding: 13px 22px; font-weight: 700; background: var(--green); color: #fff; min-height: 48px; }
.btn:hover { background: var(--green-deep); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--green); color: var(--green); }
.btn.big { font-size: 20px; padding: 16px 30px; min-height: 60px; }
.eyebrow { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 700; color: var(--green); }
.muted { color: var(--muted); }
.error { color: var(--wrong); font-weight: 600; min-height: 1.5em; margin: 8px 0 0; }
label.field { display: grid; gap: 6px; font-weight: 600; font-size: 15px; }
.field input, .field select { width: 100%; border: 1.5px solid var(--line); background: var(--card); border-radius: 12px;
  padding: 12px 14px; min-height: 50px; }
.field input:focus, .field select:focus { border-color: var(--green); outline: none; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.row > * { flex: 1 1 140px; }
.tabnums { font-variant-numeric: tabular-nums; }

/* Join */
.join { max-width: 460px; margin: 6vh auto 40px; padding: 0 16px; display: grid; gap: 22px; }
.join h1 { font-size: clamp(34px, 7vw, 52px); }
.join .code-input { font-family: var(--display); font-size: 34px; letter-spacing: 0.22em; text-transform: uppercase;
  text-align: center; font-weight: 700; }
.join form { display: grid; gap: 16px; }
.teacher-link { text-align: center; font-size: 15px; }
.teacher-link a { color: var(--green); font-weight: 700; }

/* Host setup */
.setup { max-width: 1100px; margin: 16px auto 60px; padding: 0 16px; display: grid; gap: 20px; }
.setup h1 { font-size: clamp(30px, 4vw, 44px); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1.5px solid var(--line); background: var(--card); border-radius: 999px; padding: 8px 16px;
  font-weight: 600; font-size: 15px; display: inline-flex; gap: 8px; align-items: center; }
.chip .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--c-subject, var(--green)); }
.chip[aria-pressed="true"] { border-color: var(--c-subject, var(--green)); background: color-mix(in srgb, var(--c-subject, var(--green)) 12%, var(--card)); }
.topics { display: grid; gap: 18px; }
.topics h3 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-family: var(--body); margin-bottom: 8px; }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px; }
.topic { display: flex; gap: 12px; align-items: center; border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px;
  background: var(--card); text-align: left; }
.topic input { width: 20px; height: 20px; accent-color: var(--green); flex: none; }
.topic span { flex: 1; font-weight: 600; font-size: 15px; line-height: 1.3; }
.topic small { color: var(--muted); font-size: 13px; white-space: nowrap; }
.topic:has(input:checked) { border-color: var(--green); background: color-mix(in srgb, var(--green) 8%, var(--card)); }
.create { position: sticky; bottom: 0; background: color-mix(in srgb, var(--ground) 92%, transparent); backdrop-filter: blur(8px);
  padding: 14px 0; display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; border-top: 1px solid var(--line); }

/* Projector */
.stage { max-width: 1400px; margin: 0 auto; padding: 8px 20px 40px; }
.lobby { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
@media (max-width: 860px) { .lobby { grid-template-columns: minmax(0, 1fr); } }
.joinbox { background: linear-gradient(140deg, #078566, #0a7fa8); color: #fff; border-radius: 22px; padding: 30px; }
.joinbox .how { font-size: 22px; opacity: 0.92; }
.joinbox .url { font-family: var(--display); font-weight: 700; font-size: clamp(26px, 3vw, 38px); }
.joinbox .code { font-family: var(--display); font-weight: 700; font-size: clamp(64px, 9vw, 120px); letter-spacing: 0.14em; line-height: 1; margin: 14px 0; }
.joinbox .meta { font-size: 18px; opacity: 0.9; }
.roster { display: flex; flex-wrap: wrap; gap: 10px; }
.player { display: inline-flex; gap: 8px; align-items: center; background: var(--card); border: 1px solid var(--line);
  border-radius: 999px; padding: 8px 14px 8px 10px; font-weight: 700; font-size: 18px; animation: pop 0.35s ease-out; }
.player button { border: 0; background: none; color: var(--muted); font-size: 18px; padding: 0 0 0 4px; line-height: 1; }
.player button:hover { color: var(--wrong); }
@keyframes pop { from { transform: scale(0.6); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.qhead { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px; }
.qhead .count { font-weight: 700; color: var(--muted); font-size: 18px; }
.timer { font-family: var(--display); font-weight: 700; font-size: 44px; min-width: 2.2ch; text-align: right; }
.timer.low { color: var(--wrong); }
.track { height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: 22px; }
.track > div { height: 100%; background: var(--green); width: 100%; transition: width 0.25s linear; }
.stem { font-family: var(--display); font-weight: 600; font-size: clamp(28px, 3.4vw, 48px); line-height: 1.18; margin: 4px 0 26px; max-width: 34ch; }
.stem.small { font-size: clamp(22px, 2.4vw, 34px); max-width: 48ch; }
.options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 640px) { .options { grid-template-columns: minmax(0, 1fr); } }
.option { --o: var(--a); position: relative; display: flex; gap: 14px; align-items: center; text-align: left;
  border: 0; border-radius: 16px; padding: 18px 20px; min-height: 84px; color: #fff; background: var(--o);
  font-weight: 700; font-size: clamp(18px, 1.8vw, 26px); line-height: 1.25; overflow-wrap: anywhere; }
.option:nth-child(2) { --o: var(--b); } .option:nth-child(3) { --o: var(--c); } .option:nth-child(4) { --o: var(--d); }
.option .letter { flex: none; width: 42px; height: 42px; border-radius: 10px; background: rgb(255 255 255 / 0.22);
  display: grid; place-items: center; font-family: var(--display); font-weight: 700; }
.option .tally { margin-left: auto; font-family: var(--display); font-weight: 700; padding-left: 8px; }
.option.dim { opacity: 0.32; }
.option.correct { box-shadow: 0 0 0 5px var(--card), 0 0 0 9px var(--right); }
.option .tick { margin-left: auto; font-size: 28px; }
.answered { margin-top: 18px; font-size: 20px; font-weight: 700; color: var(--muted); display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.reveal { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr); gap: 22px; margin-top: 22px; }
@media (max-width: 960px) { .reveal { grid-template-columns: minmax(0, 1fr); } }
.explain { font-size: 20px; line-height: 1.5; }
.explain b { color: var(--right); }
.board { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 8px; }
.board li { display: flex; align-items: center; gap: 10px; background: var(--ground); border-radius: 12px; padding: 10px 14px;
  font-weight: 700; font-size: 19px; }
.board .pos { width: 1.6em; color: var(--muted); }
.board .pts { margin-left: auto; font-variant-numeric: tabular-nums; }
.controls { display: flex; gap: 12px; justify-content: flex-end; margin-top: 22px; flex-wrap: wrap; }

.podium { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; align-items: end; max-width: 820px; margin: 20px auto 30px; }
.step { text-align: center; }
.step .who { font-weight: 700; font-size: 22px; margin-bottom: 8px; overflow-wrap: anywhere; }
.step .animal { font-size: 46px; display: block; }
.step .block { border-radius: 16px 16px 6px 6px; color: #fff; font-family: var(--display); font-weight: 700; font-size: 40px; display: grid; place-items: center; }
.step:nth-child(1) .block { height: 150px; background: var(--b); }
.step:nth-child(2) .block { height: 210px; background: var(--green); }
.step:nth-child(3) .block { height: 110px; background: var(--d); }
.step .score { font-size: 16px; color: var(--muted); margin-top: 6px; }
.missed { display: grid; gap: 10px; }
.missed li { display: grid; gap: 2px; }
.missed .share { font-weight: 700; color: var(--wrong); }
.plug { margin-top: 20px; display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  background: color-mix(in srgb, var(--green) 10%, var(--card)); border: 1px solid color-mix(in srgb, var(--green) 30%, var(--line)); border-radius: 16px; padding: 18px 22px; }
.plug strong { font-family: var(--display); font-size: 22px; }

/* Player */
.play { max-width: 680px; margin: 12px auto 40px; padding: 0 16px; display: grid; gap: 18px; }
.me { display: flex; align-items: center; gap: 10px; font-weight: 700; justify-content: space-between; }
.me .animal { font-size: 30px; }
.wait { text-align: center; padding: 50px 20px; }
.wait h2 { font-size: clamp(28px, 6vw, 40px); margin: 10px 0 8px; }
.wait .big { font-size: 64px; }
.play .stem { font-size: clamp(22px, 4.6vw, 30px); margin: 0 0 6px; max-width: none; }
.play .options { grid-template-columns: minmax(0, 1fr); }
.play .option { min-height: 68px; font-size: 19px; }
.play .option:disabled { cursor: default; }
.play .option.picked { box-shadow: 0 0 0 4px var(--card), 0 0 0 8px var(--ink); }
.result { text-align: center; border-radius: 20px; padding: 30px 20px; color: #fff; }
.result.good { background: var(--right); }
.result.bad { background: var(--wrong); }
.result.none { background: var(--muted); }
.result h2 { font-size: clamp(32px, 7vw, 46px); }
.result .pts { font-family: var(--display); font-size: 28px; font-weight: 700; margin-top: 6px; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; text-align: center; }
.stats div { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 8px; }
.stats b { display: block; font-family: var(--display); font-size: 28px; }
.stats span { color: var(--muted); font-size: 14px; }

/* Study (signed-in web app) */
.study { max-width: 980px; margin: 8px auto 60px; padding: 0 16px; }
.small { font-size: 14px; }
.link { background: none; border: 0; color: var(--green); font-weight: 700; padding: 6px 0; }
.danger { color: var(--wrong) !important; }
.age { border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; display: grid; gap: 6px; }
.years { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 12px; max-width: 520px; }
.year { background: var(--card); border: 1.5px solid var(--line); border-radius: 18px; padding: 14px 0; display: grid; place-items: center; }
.year:hover { border-color: var(--green); }
.year b { font-family: var(--display); font-size: 36px; color: var(--green); }
.home { display: grid; gap: 18px; }
.hello { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.hello h1 { font-size: clamp(30px, 5vw, 44px); }
.streak { text-align: center; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 8px 16px; }
.streak b { display: block; font-family: var(--display); font-size: 28px; color: var(--d); }
.streak span { font-size: 12px; color: var(--muted); }
.modes { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 12px; }
.mode { border: 0; border-radius: 18px; padding: 18px; color: #fff; text-align: left; display: grid; gap: 2px; min-height: 96px; opacity: .55; }
.mode b { font-family: var(--display); font-size: 24px; }
.mode.learn { background: linear-gradient(140deg, #6b3fd0, #a3337a); opacity: .35; cursor: not-allowed; }
.mode.cards { background: linear-gradient(140deg, #1470e6, #0b55b8); }
.mode.test { background: linear-gradient(140deg, #078566, #0a8bb3); }
.mode.on { opacity: 1; box-shadow: 0 0 0 3px var(--ground), 0 0 0 6px currentColor; }
.ready { display: flex; justify-content: space-between; align-items: center; text-align: left; border: 1px solid var(--line); cursor: pointer; }
.ready div { display: grid; }
.ready b { font-family: var(--display); font-size: 20px; }
.ready .go { font-size: 30px; color: var(--muted); }
.ready:disabled { cursor: default; opacity: .6; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.tile { background: color-mix(in srgb, var(--c-subject) 10%, var(--card)); border: 1px solid color-mix(in srgb, var(--c-subject) 30%, var(--line));
  border-radius: 16px; padding: 16px; text-align: left; display: grid; gap: 2px; }
.tile .pct { font-family: var(--display); font-weight: 700; font-size: 26px; color: var(--c-subject); }
.tile b { font-size: 18px; }
.sync { text-align: center; }
.sync a { color: var(--green); }
.unit { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 18px 0 8px; font-family: var(--body); }
.topic-list { display: grid; gap: 8px; }
.topic-row { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; text-align: left; display: grid; gap: 3px; }
.topic-row:hover { border-color: var(--green); }
.topic-row:disabled { opacity: .5; }
.topic-row b { font-size: 18px; }
.option.wrongpick { box-shadow: 0 0 0 5px var(--card), 0 0 0 9px var(--wrong); opacity: 1; }
.explain.good b { color: var(--right); } .explain.bad b { color: var(--wrong); }
.play .explain { font-size: 17px; margin-top: 14px; }
.track.cards > div { background: #1470e6; }
.flashcard { width: 100%; min-height: 260px; border-radius: 22px; border: 0; padding: 26px; display: grid; gap: 10px; align-content: center; text-align: center;
  background: linear-gradient(150deg, #1470e6, #0b55b8); color: #fff; box-shadow: var(--shadow); cursor: pointer; }
.flashcard.back { background: var(--card); color: var(--ink); border: 2px solid #1470e6; }
.flashcard .face { font-family: var(--display); font-size: clamp(22px, 3.4vw, 32px); font-weight: 600; line-height: 1.25; }
.flashcard .eyebrow { color: inherit; opacity: .75; }
.cardbtns { justify-content: center; }
.cardsbtn { background: #1470e6; } .cardsbtn:hover { background: #0b55b8; }
@media (max-width: 640px) { .modes { grid-template-columns: 1fr 1fr 1fr; } .mode { padding: 12px; min-height: 80px; } .mode b { font-size: 18px; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Subject and topic icons (Material Symbols standing in for the app's SF Symbols) */
.msym { font-family: "Material Symbols Rounded"; font-weight: normal; font-style: normal; font-size: 24px; line-height: 1;
  letter-spacing: normal; text-transform: none; white-space: nowrap; direction: ltr; -webkit-font-smoothing: antialiased;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24; display: inline-block; }
.tile .tile-top { display: flex; justify-content: space-between; align-items: center; }
.tile .msym { color: var(--c-subject); font-size: 28px; }
.topic-row { grid-template-columns: 44px 1fr; column-gap: 12px; align-items: start; }
.topic-row > .ticon { grid-row: span 3; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: color-mix(in srgb, var(--c-subject) 14%, var(--card)); color: var(--c-subject); }
.topic .msym { color: var(--green); font-size: 22px; }
.chip .msym { font-size: 18px; color: var(--c-subject, var(--green)); }
.ready.caught { justify-content: flex-start; gap: 14px; cursor: default; }
.caught .msym { font-size: 28px; }
.caught .msym { color: var(--right); }

/* Live leaderboard beside the question */
.stage.live { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; }
@media (max-width: 980px) { .stage.live { grid-template-columns: minmax(0, 1fr); } }
.side { position: sticky; top: 16px; display: grid; gap: 10px; }
.live-board { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.live-board li { display: flex; align-items: center; gap: 8px; background: var(--ground); border-radius: 12px; padding: 9px 12px;
  font-weight: 700; font-size: 17px; will-change: transform; }
.live-board li.top { background: color-mix(in srgb, var(--gold) 22%, var(--card)); }
.live-board .pos { width: 1.5em; color: var(--muted); text-align: right; }
.live-board .who { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.live-board .pts { font-variant-numeric: tabular-nums; }
.live-board .gain { background: var(--right); color: #fff; border-radius: 99px; padding: 2px 8px; font-size: 13px; animation: pop .5s .3s both; }
.live-board .move { font-size: 12px; font-weight: 700; }
.live-board .move.up { color: var(--right); } .live-board .move.down { color: var(--wrong); }
.live-board .tick { color: var(--right); font-weight: 700; animation: pop .3s both; }
.result .breakdown { margin-top: 6px; font-size: 15px; opacity: .92; }

.savebar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  background: color-mix(in srgb, var(--green) 8%, var(--card)); }
.savebar div { display: grid; gap: 2px; }

/* Teachers: classes, to-dos and progress */
.teach section { display: grid; gap: 12px; }
.teach > .link, .home > .link { justify-self: start; }
.teach h2 { font-size: 24px; }
.teach summary { cursor: pointer; }
.teach-head, .teach-sub { display: flex; justify-content: space-between; align-items: end; gap: 16px; flex-wrap: wrap; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px; }
.steps div { display: grid; gap: 4px; }
.class-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.class-card { display: grid; gap: 4px; text-align: left; padding: 18px 20px; cursor: pointer; }
.class-card:hover { border-color: var(--green); }
.class-card b { font-family: var(--display); font-size: 22px; }
.class-code, .joincode b { font-family: var(--display); font-weight: 700; letter-spacing: 0.12em; color: var(--green); }
.joincode { display: grid; gap: 2px; padding: 14px 20px; text-align: center; }
.joincode b { font-size: 38px; line-height: 1.1; }
.task-list { display: grid; gap: 10px; }
.task { display: grid; grid-template-columns: 1fr auto auto; gap: 16px; align-items: center; padding: 16px 20px; text-align: left; }
.task > div:first-child, .todo > div { display: grid; gap: 2px; }
.task-done { display: grid; justify-items: end; gap: 4px; min-width: 70px; }
.task-done b { font-family: var(--display); font-size: 22px; }
.pbar { display: block; width: 90px; height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.pbar > span { display: block; height: 100%; background: var(--green); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
table.progress { border-collapse: collapse; width: 100%; font-size: 15px; }
table.progress th, table.progress td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; white-space: nowrap; }
table.progress thead th { font-size: 13px; font-weight: 700; color: var(--muted); max-width: 160px; overflow: hidden; text-overflow: ellipsis; }
table.progress thead th span { display: block; font-weight: 600; }
table.progress tbody th { font-weight: 700; position: sticky; left: 0; background: var(--card); }
table.progress tr:last-child > * { border-bottom: 0; }
.cell { display: grid; gap: 3px; }
.cell .pbar { width: 70px; }
.cell.full .pbar > span { background: var(--right); }
.cell:not(.some):not(.full) .small { color: var(--muted); }
.game summary { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.game-results { margin: 12px 0 0; padding-left: 22px; display: grid; gap: 4px; }
.game-results li span:last-child { float: right; color: var(--muted); }
.from-teacher { display: grid; gap: 10px; }
.todo { cursor: pointer; grid-template-columns: auto 1fr auto; border: 1px solid color-mix(in srgb, var(--d) 40%, var(--line)); background: color-mix(in srgb, var(--d) 7%, var(--card)); }
.todo:hover { border-color: var(--d); }
.todo-icon .msym { font-size: 28px; color: var(--d); }
.todo.complete { background: var(--card); border-color: var(--line); }
.todo.complete .todo-icon .msym, .todo.complete .task-done b { color: var(--right); }
.late { color: var(--wrong); font-weight: 700; }
.note { margin: 10px 0 0; padding: 14px 18px; }
.joined { list-style: none; padding: 0; margin: 0 0 12px; display: grid; gap: 8px; }
.joined li { display: flex; justify-content: space-between; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
@media (max-width: 560px) {
  .task { grid-template-columns: 1fr auto; }
  .task > .link { grid-column: 1 / -1; justify-self: start; }
  .todo { grid-template-columns: auto 1fr; }
  .todo .task-done { grid-column: 2; justify-items: start; }
}
.panel .track { margin: 10px 0 0; }

/* Home: every way in, on one page — students on the left, teachers on the right */
.hub { max-width: 1100px; margin: 12px auto 60px; padding: 0 16px; display: grid; gap: 28px; }
.hub-hero { max-width: 760px; }
.hub-hero h1 { font-size: clamp(34px, 5vw, 56px); margin: 8px 0 10px; }
.hub-hero p { font-size: 19px; margin: 0; }
.hub-sides { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
.hub-side { --hub-c: var(--green); display: grid; gap: 14px; align-content: start; grid-auto-rows: auto; border-radius: 20px; padding: 22px;
  background: color-mix(in srgb, var(--hub-c) 7%, var(--card)); border: 1.5px solid color-mix(in srgb, var(--hub-c) 30%, var(--line)); }
.hub-side.teachers { --hub-c: var(--c); }
.hub-side h2 { display: flex; align-items: center; gap: 12px; font-size: 26px; color: var(--hub-c); }
.hub-icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; flex: none;
  background: var(--hub-c, var(--green)); color: #fff; }
.hub-icon .msym { font-size: 24px; }
.hub-join { display: grid; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.hub-join .field span { display: block; margin-bottom: 8px; font-weight: 500; }
.hub-join .code-input { font-family: var(--display); font-size: 30px; letter-spacing: 0.22em; text-transform: uppercase; text-align: center; padding: 10px; }
.hub-join .error:empty { display: none; }
.hub-option { display: grid; gap: 8px; text-decoration: none; color: var(--ink); background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 18px; transition: border-color .15s, transform .15s; }
.hub-option > span:first-child { display: grid; gap: 3px; }
.hub-option b { font-family: var(--display); font-size: 21px; line-height: 1.15; }
.hub-option .muted { font-size: 16px; }
.hub-option:hover { border-color: var(--hub-c); transform: translateY(-2px); }
.hub-go { font-weight: 700; color: var(--hub-c); }
@media (prefers-reduced-motion: reduce) { .hub-option { transition: none; } .hub-option:hover { transform: none; } }
@media (max-width: 820px) { .hub-sides { grid-template-columns: minmax(0, 1fr); } }
.hub-foot { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  border-top: 1px solid var(--line); padding-top: 22px; }
.hub-foot div { display: grid; gap: 2px; max-width: 46em; }
.hub-sign { text-align: center; margin: 0; }
.hub-sign a, .eyebrow a { color: var(--green); font-weight: 700; }
.code-input::placeholder { color: var(--muted); opacity: .45; }
/* Both sides fill the same height, with the cards inside sharing it out. */
.hub-side { display: flex; flex-direction: column; }
.hub-side .hub-option { flex: 1; align-content: space-between; }