:root {
  --paper: #e8eef4;
  --grid: rgba(36, 62, 99, 0.09);
  --card: #ffffff;
  --ink: #12274a;
  --muted: #3f5272;
  --line: #9db0c8;
  --accent: #ffc72c;
  --accent-ink: #1a1a1a;
  --good: #14693a;
  --bad: #a3231f;
  --focus: #0b57d0;
  --sky: #cfe6f7; --hill: #bcd6c8; --cloud: #ffffff; --grass: #6aa84f; --soil: #9a7b57; --clay: #bf8a5e; --rockc: #a4afbb;
  --water: #5aa9d6; --voidc: #6f7f94; --leaf: #2f7d4f; --trunk: #6b4a2b; --br: #12274a; --craneyel: #f2b705;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1b2e; --grid: rgba(150, 180, 220, 0.08); --card: #17263d; --ink: #e6eefb; --muted: #b3c3dc;
    --line: #3c5273; --good: #6fd49b; --bad: #ff8a84; --focus: #8ab4ff;
    --sky: #1b3350; --hill: #2a4a45; --cloud: #3d5a80; --grass: #3d7a3a; --soil: #5e4a35; --clay: #7a5538; --rockc: #4e5a68;
    --water: #2b6c96; --voidc: #05080d; --leaf: #1f5a38; --trunk: #4a3320; --br: #ffc72c;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1b2e; --grid: rgba(150, 180, 220, 0.08); --card: #17263d; --ink: #e6eefb; --muted: #b3c3dc;
  --line: #3c5273; --good: #6fd49b; --bad: #ff8a84; --focus: #8ab4ff;
  --sky: #1b3350; --hill: #2a4a45; --cloud: #3d5a80; --grass: #3d7a3a; --soil: #5e4a35; --clay: #7a5538; --rockc: #4e5a68;
  --water: #2b6c96; --voidc: #05080d; --leaf: #1f5a38; --trunk: #4a3320; --br: #ffc72c;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { font-size: 100%; }
body {
  margin: 0; font: 1.125rem/1.55 var(--sans); color: var(--ink); background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px; min-height: 100vh;
}
.wrap { max-width: 80rem; margin: 0 auto; padding: 1rem 1rem 3rem; }
.num, .status__value.num, .facts .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 0; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.topbar { display: flex; justify-content: space-between; align-items: center; gap: .5rem; flex-wrap: wrap; max-width: 80rem; margin: 0 auto; padding: .75rem 1rem 0; }
.topbar__tools { display: flex; gap: .5rem; }

h1, h2, h3, h4 { line-height: 1.2; margin: 1.1rem 0 .5rem; }
h2 { font-size: 1.75rem; }
h2:focus { outline: none; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; margin-bottom: .2rem; }
p { margin: .5rem 0; max-width: 68ch; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .85rem; color: var(--muted); font-weight: 700; margin-bottom: 0; }
.hint { color: var(--muted); font-size: 1rem; }
.big { font-size: 1.5rem; font-weight: 700; }
.good { color: var(--good); font-weight: 700; }
.bad { color: var(--bad); font-weight: 700; }
code { font-family: var(--mono); font-size: .95rem; word-break: break-all; }

.screen { display: block; }
.stack { display: grid; gap: .75rem; }

.btn {
  font: inherit; font-weight: 700; min-height: 44px; padding: .55rem 1.1rem; border-radius: 6px; cursor: pointer;
  background: var(--card); color: var(--ink); border: 2px solid var(--ink);
}
.btn:hover { background: var(--grid); }
.btn--primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent-ink); }
.btn--primary:hover { background: #ffd65a; }
.btn--small { min-height: 36px; padding: .25rem .75rem; font-size: .95rem; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn--choice { display: block; width: 100%; text-align: left; font-weight: 400; }
.controls { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1rem 0; }

fieldset { border: 0; padding: 0; margin: 1rem 0; }
legend { font-weight: 700; font-size: 1.15rem; padding: 0; margin-bottom: .4rem; }
.choices { display: grid; gap: .6rem; }
.choice {
  display: flex; gap: .75rem; align-items: flex-start; background: var(--card); border: 2px solid var(--line);
  border-radius: 8px; padding: .75rem 1rem; cursor: pointer;
}
.choice:has(input:checked) { border-color: var(--ink); box-shadow: inset 0 0 0 2px var(--accent); }
.choice:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.choice.is-disabled { opacity: .6; cursor: not-allowed; }
.choice input { width: 1.4rem; height: 1.4rem; margin-top: .2rem; flex: none; accent-color: var(--ink); }
.choice__body { display: grid; gap: .15rem; }
.choice__title { font-weight: 700; display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.choice__line { color: var(--ink); }

.badge { font-size: .85rem; padding: .05rem .5rem; border-radius: 999px; border: 2px solid currentColor; font-weight: 700; }
.badge--low, .badge--safer { color: var(--good); }
.badge--medium { color: var(--ink); background: var(--accent); border-color: var(--accent-ink); color: var(--accent-ink); }
.badge--high, .badge--riskier { color: var(--bad); }

.field { display: grid; gap: .3rem; margin: 1rem 0; }
.field label { font-weight: 700; }
input[type=text], textarea {
  font: inherit; color: var(--ink); background: var(--card); border: 2px solid var(--line); border-radius: 6px; padding: .5rem .7rem; width: 100%;
}
textarea { resize: vertical; }

.facts { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1.25rem; background: var(--card); border: 2px solid var(--line); border-radius: 8px; padding: .75rem 1rem; margin: 1rem 0; }
.facts dt { font-weight: 700; }
.facts dd { margin: 0; }
.facts--tight { border: 0; padding: 0; margin: .25rem 0 .5rem; background: transparent; }
.panel { background: var(--card); border: 2px solid var(--ink); border-radius: 8px; padding: .5rem 1rem 1rem; margin: 1rem 0; }
.panel h3 { margin-top: .5rem; }
.note { background: var(--accent); color: var(--accent-ink); border-radius: 8px; padding: .75rem 1rem; margin: 1rem 0; border: 2px solid var(--accent-ink); }

progress { width: 100%; height: 1rem; accent-color: var(--ink); }

.status {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr)); gap: .5rem .75rem;
  background: var(--card); border: 2px solid var(--ink); border-radius: 8px; padding: .6rem .8rem; margin-bottom: 1rem;
}
.status__cell { display: grid; gap: .1rem; align-content: start; }
.status__label { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 700; }
.status__value { font-weight: 700; font-size: 1.05rem; }
.status__cell.is-bad .status__value { color: var(--bad); }

.daylog { list-style: none; padding: 0; margin: 0; display: grid; gap: .35rem; max-height: 18rem; overflow: auto; }
.daylog li { background: var(--card); border-left: 6px solid var(--line); padding: .35rem .7rem; border-radius: 4px; }
.daylog li.is-event { border-left-color: var(--accent); font-weight: 700; }

.eventcard { background: var(--card); border: 3px solid var(--accent); border-radius: 10px; padding: .25rem 1.1rem 1.1rem; }
.eventcard .btn--choice { border-radius: 8px; }

.loadlines { padding-left: 1.4rem; font-size: 1.2rem; }
.loadlines li { margin: .6rem 0; }
.verdict { font-weight: 800; list-style: none; margin-left: -1.4rem; }
.stars { letter-spacing: .15em; color: var(--ink); }
.starlist { list-style: none; padding: 0; display: grid; gap: .5rem; }
.starlist li { display: flex; gap: .75rem; background: var(--card); padding: .6rem .9rem; border-radius: 8px; border: 2px solid var(--line); }
.starlist li.is-earned { border-color: var(--good); }
.starlist li.is-missed { border-color: var(--bad); }
.starlist__icon { font-size: 1.4rem; line-height: 1.2; }
.report { background: var(--card); border: 2px solid var(--bad); border-radius: 10px; padding: .25rem 1.1rem 1rem; margin: 1rem 0; }

.table { width: 100%; border-collapse: collapse; background: var(--card); margin: 1rem 0; }
.table th, .table td { border: 2px solid var(--line); padding: .5rem .7rem; text-align: left; }

.teacher { margin-top: 1.5rem; background: var(--card); border: 2px solid var(--line); border-radius: 8px; padding: .5rem 1rem; }
.teacher summary { cursor: pointer; font-weight: 700; min-height: 32px; }

.termwrap { display: inline; }
.term { font: inherit; color: inherit; background: none; border: 0; border-bottom: 2px dotted var(--ink); padding: 0; cursor: help; }
.termdef { display: block; background: var(--accent); color: var(--accent-ink); border-radius: 6px; padding: .4rem .7rem; margin: .3rem 0; font-size: 1rem; }

dialog { background: var(--card); color: var(--ink); border: 3px solid var(--ink); border-radius: 10px; max-width: min(34rem, 92vw); padding: 0 1.2rem 1rem; }
dialog::backdrop { background: rgba(0, 0, 0, .5); }
.dialog__head { display: flex; justify-content: space-between; align-items: center; }
.glossary dt { font-weight: 700; text-transform: capitalize; margin-top: .6rem; }
.glossary dd { margin: 0; }

#print-root { display: none; }

@media (max-width: 520px) {
  .facts { grid-template-columns: 1fr; }
  h2 { font-size: 1.5rem; }
}
@media (prefers-reduced-motion: no-preference) {
  progress { transition: all .3s; }
}

/* ---------- Phase 2 art ---------- */
.scene { margin: 0 0 1rem; border: 2px solid var(--ink); border-radius: 8px; overflow: hidden; background: var(--sky); }
.scene__svg { display: block; width: 100%; height: auto; }
.choice__icon { flex: none; width: 7.5rem; border: 2px solid var(--line); border-radius: 6px; overflow: hidden; align-self: center; }
.bridge-icon { display: block; width: 100%; height: auto; }
@media (max-width: 520px) { .choice { flex-wrap: wrap; } .choice__icon { width: 6rem; } }

.a-sky { fill: var(--sky); }
.a-hill { fill: var(--hill); }
.a-cloud { fill: var(--cloud); opacity: .85; }
.a-water { fill: var(--water); }
.a-wave { fill: none; stroke: var(--cloud); stroke-width: 2; opacity: .6; }
.a-void { fill: var(--voidc); }
.a-quarry { fill: var(--rockc); }
.a-bank--rock, .a-rockpile { fill: var(--rockc); }
.a-bank--firm { fill: var(--soil); }
.a-bank--soft { fill: var(--clay); }
.a-top--firm { fill: var(--grass); }
.a-top--soft { fill: #c9a56a; }
.a-top--rock { fill: #a8b2bd; }
.a-trunk { fill: var(--trunk); }
.a-leaf { fill: var(--leaf); }
.a-bird, .a-eagle { fill: none; stroke: var(--br); stroke-width: 2; stroke-linecap: round; }
.a-eagle { fill: var(--br); }
.a-mill { fill: #d9c3a0; }
.a-roof { fill: #a33; }
.a-wheel { fill: none; stroke: var(--trunk); stroke-width: 3; }
.a-wheel-spoke { stroke: var(--trunk); stroke-width: 2; }
.a-fall { fill: var(--cloud); opacity: .7; }
.a-fall-line { stroke: var(--water); stroke-width: 2; fill: none; }
.a-post { fill: var(--rockc); }
.a-lamp { fill: #e53935; }
.a-rail { fill: var(--rockc); }
.a-hull { fill: #8b3a2b; }
.a-sail { fill: var(--cloud); }
.a-tower { fill: var(--cloud); }
.a-tower-top { fill: #4a4a4a; }

.a-line { fill: none; stroke: var(--br); stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; }
.a-line--thin { stroke-width: 2.5; }
.a-deck { fill: var(--br); }
.a-pier, .a-tower-br { fill: var(--br); opacity: .85; }
.a-person { fill: var(--br); }
.a-person-line { fill: none; stroke: var(--br); stroke-width: 2.5; stroke-linecap: round; }
.a-veh-body { fill: #e5484d; stroke: #1a1a1a; stroke-width: 1.5; }
.a-veh-cab { fill: #2d6cdf; stroke: #1a1a1a; stroke-width: 1.5; }
.a-wheel-v { fill: #1a1a1a; }
.a-crane-line { fill: none; stroke: var(--craneyel); stroke-width: 3; stroke-linejoin: round; }
.a-crane-base { fill: #1a1a1a; }
.a-crane-hook { fill: var(--craneyel); stroke: #1a1a1a; stroke-width: 1.5; }
.a-person, .a-person-line { stroke-linejoin: round; }

/* Scene people and vehicles on the load test. Motion only when the person has not asked for less. */
.a-veh.is-hidden { display: none; }
.a-half--l { transform-origin: 150px 110px; }
.a-half--r { transform-origin: 450px 110px; }
.a-half--l.is-down { transform: rotate(34deg); }
.a-half--r.is-down { transform: rotate(-34deg); }
.a-half--l.sag-1 { transform: rotate(3deg); }
.a-half--r.sag-1 { transform: rotate(-3deg); }
.a-half--l.sag-2 { transform: rotate(7deg); }
.a-half--r.sag-2 { transform: rotate(-7deg); }
.a-veh { transform-box: fill-box; }
@media (prefers-reduced-motion: no-preference) {
  .a-half--l, .a-half--r { transition: transform 1.1s cubic-bezier(.55, 0, .9, .6); }
  .a-veh.cross { transform: translateX(780px); transition: transform 1.6s linear; }
  .a-veh.mid { transform: translateX(410px); transition: transform .95s linear; }
  .a-veh.fall { transform-origin: center; transform: translate(410px, 120px) rotate(28deg); transition: transform .8s ease-in; }
}
@media (prefers-reduced-motion: reduce) {
  .a-veh { display: none; }
}

.speed { display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; }
.speed__label { font-weight: 700; margin-right: .25rem; }
.speed__opt { display: inline-flex; align-items: center; gap: .35rem; min-height: 44px; padding: .2rem .7rem; border: 2px solid var(--line); border-radius: 999px; background: var(--card); cursor: pointer; font-weight: 700; }
.speed__opt:hover { border-color: var(--ink); }
.speed__opt:has(input:checked) { background: var(--accent); color: var(--accent-ink); border-color: var(--accent-ink); }
.speed__opt:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.speed__icon { display: inline-grid; width: 1.9rem; height: 1.9rem; }
.speed__icon svg { width: 100%; height: 100%; display: block; }
select { font: inherit; color: var(--ink); background: var(--card); border: 2px solid var(--ink); border-radius: 6px; min-height: 44px; padding: .3rem .6rem; }
@media (prefers-reduced-motion: no-preference) {
  .a-clip { transition: width 1.8s ease-in-out; }
  .a-crane { transition: transform 1.8s ease-in-out; }
}

.topbar__title { font-size: 1.5rem; margin: 0; flex: 1 1 auto; }
.topbar__title a { color: inherit; text-decoration: none; }
.topbar__title a:hover { text-decoration: underline; }
.about { max-width: 78rem; width: calc(100% - 2rem); margin: 1rem auto 0; background: var(--card); border: 2px solid var(--line); border-radius: 8px; padding: .5rem 1rem; }
.about summary { cursor: pointer; min-height: 32px; display: flex; align-items: center; }
.about summary h2 { font-size: 1.1rem; margin: 0; display: inline; }
.about p, .about li { max-width: 68ch; }
.about a { color: var(--ink); }
/* Same small pill the other Maker404 apps show at the bottom. */
.sitefoot { display: flex; justify-content: center; padding: 18px 12px calc(env(safe-area-inset-bottom, 0px) + 18px); }
.madeby {
  display: inline-flex; align-items: center; gap: .35rem; margin: 0; padding: 7px 10px; border-radius: 999px;
  background: rgba(15, 23, 42, .56); border: 1px solid rgba(255, 255, 255, .16); box-shadow: 0 10px 30px rgba(0, 0, 0, .22);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  color: rgba(255, 255, 255, .82); font: 600 11px/1 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; letter-spacing: .01em; white-space: nowrap;
}
.madeby a { color: #fff; text-decoration: none; }
.madeby a:hover, .madeby a:focus-visible { text-decoration: underline; }

/* ---------- Wider layout for Chromebook-size screens ---------- */
.howto { background: var(--card); border: 2px solid var(--line); border-radius: 8px; padding: .25rem 1rem .5rem; margin: 1rem 0; }
.howto h3 { margin-top: .5rem; }
.howto ol { margin: .25rem 0 .5rem; padding-left: 1.4rem; }
.howto li { margin: .3rem 0; }
.screen--narrow { max-width: 46rem; margin: 0 auto; }
.scene { max-width: 52rem; }
.buildgrid { display: grid; gap: 0 1.5rem; grid-template-areas: "scene" "main" "log"; }
.buildgrid__scene { grid-area: scene; margin-bottom: 1rem; width: 100%; }
.build-main { grid-area: main; }
.buildgrid__log { grid-area: log; }
.buildgrid__log h3 { margin-top: .25rem; }

@media (min-width: 900px) {
  .split { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 0 2rem; align-items: start; }
  .split--side { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
  .split__b--sticky { position: sticky; top: 1rem; }
  .split__a .scene { max-width: none; }
  .choices--grid { grid-template-columns: 1fr 1fr; }
  .buildgrid { grid-template-columns: minmax(0, clamp(500px, calc((100vh - 470px) * 2.7), 66%)) minmax(0, 1fr); grid-template-areas: "scene log" "main log"; grid-template-rows: auto 1fr; align-items: start; }
  .buildgrid__scene { max-width: none; }
  .daylog { max-height: calc(100vh - 15rem); min-height: 12rem; }
  .eventcard { margin-top: 0; }
  .split__b h2 { margin-top: 0; }
}
@media (min-width: 900px) and (max-height: 760px) {
  body { font-size: 1.0625rem; }
  .choice { padding: .55rem .8rem; }
}

/* Live crew pay control (Challenge mode) */
.paypanel { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; margin: 0 0 .75rem; }
.paypanel__cost { font-size: .9rem; font-weight: 400; }
.paypanel__hint { flex-basis: 100%; margin: 0; font-size: .95rem; }

/* Mode cards with an "i" button for the longer description */
.choicebox { display: grid; grid-template-columns: 1fr auto; align-items: center; background: var(--card); border: 2px solid var(--line); border-radius: 8px; }
.choicebox:has(input:checked) { border-color: var(--ink); box-shadow: inset 0 0 0 2px var(--accent); }
.choicebox:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.choicebox__main { display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem; cursor: pointer; min-height: 52px; }
.choicebox__main input { width: 1.4rem; height: 1.4rem; flex: none; accent-color: var(--ink); }
.choicebox__more { grid-column: 1 / -1; margin: 0 .75rem .75rem; background: var(--accent); color: var(--accent-ink); border-radius: 6px; padding: .5rem .75rem; font-size: 1rem; }
.info { background: none; border: 0; padding: 0; min-width: 44px; min-height: 44px; cursor: pointer; display: grid; place-items: center; margin-right: .25rem; }
.info__dot { display: grid; place-items: center; width: 1.6rem; height: 1.6rem; border-radius: 50%; border: 2px solid var(--ink); color: var(--ink); background: var(--card); font: 700 1rem/1 Georgia, "Times New Roman", serif; font-style: italic; }
.info:hover .info__dot, .info[aria-expanded="true"] .info__dot { background: var(--accent); color: var(--accent-ink); border-color: var(--accent-ink); }

/* Compact event card so it fits under the animation on a 1366x768 Chromebook */
@media (min-width: 900px) {
  .buildgrid .eventcard { padding: .1rem .9rem .8rem; border-width: 2px; }
  .buildgrid .eventcard h2 { font-size: 1.4rem; margin: .3rem 0 .3rem; }
  .buildgrid .eventcard p { margin: .25rem 0; font-size: 1rem; }
  .buildgrid .eventcard .eyebrow { font-size: .75rem; }
  .buildgrid .eventcard .choice__line { font-size: .95rem; }
  .buildgrid .eventcard .stack { gap: .5rem; }
  .buildgrid .eventcard .btn { padding: .4rem .8rem; min-height: 0; }
}

/* Switch between the two bridge games */
.gameswitch { display: inline-flex; border: 2px solid var(--ink); border-radius: 999px; overflow: hidden; background: var(--card); }
.gameswitch a { display: flex; align-items: center; min-height: 38px; padding: .25rem .95rem; font-weight: 700; font-size: .95rem; text-decoration: none; color: var(--ink); }
.gameswitch a:hover { background: var(--grid); }
.gameswitch a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); }
.gameswitch a:focus-visible { outline-offset: -3px; }
.otheroffer { background: var(--card); border: 2px solid var(--line); border-radius: 8px; padding: .5rem 1rem .9rem; margin: 1rem 0; }
.otheroffer h3 { margin-top: .3rem; }
.otheroffer .btn { display: inline-flex; align-items: center; text-decoration: none; }