:root {
  --bg: #f6f4ef;
  --panel: #ffffff;
  --ink: #1d1b18;
  --muted: #6b665d;
  --line: #e2ddd2;
  --accent: #c4561b;
  --accent-ink: #ffffff;
  --accent-soft: #fbe9de;
  --good: #1f7a46;
  --good-soft: #e3f3e9;
  --bad: #b3261e;
  --bad-soft: #fbe5e3;
  --code-bg: #f1eee7;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 4px 14px rgb(0 0 0 / 5%);
  --radius: 12px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15130f;
    --panel: #1f1c17;
    --ink: #f1ece2;
    --muted: #a59d8f;
    --line: #353028;
    --accent: #ee7a3a;
    --accent-ink: #1a0f08;
    --accent-soft: #3a2416;
    --good: #5bc98a;
    --good-soft: #17301f;
    --bad: #f08a80;
    --bad-soft: #3a1c19;
    --code-bg: #262219;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
button, input, textarea { font: inherit; color: inherit; }
a { color: var(--accent); }
code, pre, .mono { font-family: var(--mono); font-size: 0.9em; }
pre { background: var(--code-bg); padding: 12px 14px; border-radius: 8px; overflow: auto; white-space: pre-wrap; word-break: break-word; margin: 0; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; }
p { margin: 0 0 0.8em; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--panel);
  position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 700; font-size: 1.15rem; display: flex; align-items: center; gap: 8px; }
.logo { color: var(--accent); font-size: 1.3rem; }
.clock {
  font-weight: 800; font-size: 1.35rem; font-variant-numeric: tabular-nums; padding: 6px 16px; border-radius: 999px;
  background: var(--code-bg); border: 2px solid var(--line); white-space: nowrap;
}
.clock-running { border-color: var(--good); color: var(--good); }
.clock-hurry { border-color: var(--bad); color: var(--bad); }
.clock-ended { border-color: var(--accent); color: var(--accent); }
.clock-lobby { color: var(--muted); font-size: 1rem; }
dialog.host { max-width: 560px; }
.host-status { font-weight: 700; font-size: 1.1rem; margin: 0; }
.host-min { width: 80px; }
.topright { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
#nav-slides { text-decoration: none; padding: 7px 16px; }
.hint { font-size: 0.875rem; color: var(--muted); }
.hint.warn { color: var(--bad); font-weight: 600; }
.topnav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
#who { color: var(--muted); }
.badge { font-size: 0.72rem; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); text-transform: uppercase; letter-spacing: 0.04em; }
.badge.live { background: var(--good-soft); color: var(--good); }

main { max-width: 1280px; margin: 0 auto; padding: 24px 20px 64px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.stack > * + * { margin-top: 16px; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }

.btn {
  border: 1px solid var(--line); background: var(--panel); padding: 9px 16px; border-radius: 9px;
  cursor: pointer; font-weight: 600;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.07); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.big { padding: 13px 22px; font-size: 1.05rem; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 0; font-weight: 600; }
.danger { color: var(--bad); }

input[type=text], input[type=password], textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--bg);
  padding: 9px 11px; outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
textarea { resize: vertical; font-family: var(--mono); font-size: 0.88rem; line-height: 1.45; }
label { display: block; font-weight: 600; font-size: 0.875rem; margin-bottom: 4px; }

/* Join / gate */
.hero { max-width: 560px; margin: 8vh auto 0; text-align: center; }
.hero h1 { font-size: 2.3rem; }
.hero form { display: flex; gap: 10px; margin-top: 20px; }
.error { color: var(--bad); font-weight: 600; min-height: 1.5em; margin-top: 8px; }

/* Learn */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
.step { position: relative; padding-top: 44px; }
.step .num {
  position: absolute; top: 16px; left: 20px; width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-weight: 800;
}
.callout { border-left: 4px solid var(--accent); background: var(--accent-soft); padding: 12px 16px; border-radius: 0 8px 8px 0; }

/* Play */
.play { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 20px; align-items: start; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: -4px 0 16px; flex-wrap: wrap; }
.tab { background: none; border: 0; padding: 8px 12px; cursor: pointer; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab[aria-selected=true] { color: var(--accent); border-color: var(--accent); }
.locked { position: relative; padding-top: 30px; }
.locked::before { content: "🔒 locked"; position: absolute; top: 8px; right: 10px; font-size: 0.75rem; color: var(--muted); font-family: system-ui; }
.standard { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.standard h3 { font-size: 1rem; }
.standard pre { background: transparent; padding: 0; font-family: inherit; font-size: 0.92rem; }
.sticky { position: sticky; top: 76px; max-height: calc(100vh - 96px); overflow: auto; }

.skill { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.skill.open { padding: 14px; }
.skill + .skill { margin-top: 8px; }
.skill-head { display: flex; align-items: center; gap: 10px; min-width: 0; }
.skill-head input[type=checkbox] { width: 18px; height: 18px; flex: none; accent-color: var(--accent); }
.skill-title { flex: 1; min-width: 0; display: flex; gap: 8px; align-items: baseline; background: none; border: 0; padding: 4px 0; cursor: pointer; text-align: left; }
.skill-title b { flex: none; font-family: var(--mono); font-size: 0.92rem; }
.skill-preview { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 0.88rem; }
.skill.open .skill-preview { display: none; }
.skill-caret { color: var(--muted); width: 16px; flex: none; font-size: 1.1rem; }
.skill-badge { flex: none; font-size: 0.75rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.skill-badge.ok { background: var(--good-soft); color: var(--good); }
.skill-badge.bad { background: var(--bad-soft); color: var(--bad); }
.skill { position: relative; }
.skill.shrinking { min-height: 96px; }
.shrink-overlay {
  position: absolute; inset: 0; z-index: 3; display: flex; align-items: center; justify-content: center; gap: 14px;
  border-radius: 10px; background: color-mix(in srgb, var(--panel) 88%, transparent); color: var(--ink); text-align: left; padding: 12px;
}
.shrink-overlay b { font-size: 1.05rem; color: var(--accent); }
.shrink-secs { font-variant-numeric: tabular-nums; color: var(--muted); }
.spinner {
  width: 30px; height: 30px; flex: none; border-radius: 50%;
  border: 4px solid var(--accent-soft); border-top-color: var(--accent); animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2.4s; } }
.btn.shrink { flex: none; padding: 5px 10px; font-size: 0.85rem; border-color: var(--accent); color: var(--accent); }
.skill .grid { margin-top: 12px; }
.skill-note:empty, .problems:empty { display: none; }
.skill-note { margin-top: 6px; }
.take-skills { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; border: 2px dashed var(--accent); border-radius: 16px; padding: 20px; }
.take-logos { display: flex; gap: 12px; flex: none; }
.take-logos img { width: 56px; height: 56px; object-fit: contain; border-radius: 12px; background: #fff; padding: 6px; }
.take-text { flex: 1; min-width: 220px; }
.take-text h2 { margin: 0 0 4px; }
.take-text p { margin: 0; }
dialog.catalog { max-width: 860px; width: calc(100% - 32px); max-height: calc(100vh - 48px); }
.catalog-head { position: sticky; top: -20px; background: var(--panel); padding: 4px 0 10px; z-index: 2; border-bottom: 1px solid var(--line); }
.catalog-group h3 { margin: 14px 0 8px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); }
.catalog-item { display: flex; gap: 14px; align-items: flex-start; justify-content: space-between; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.catalog-item + .catalog-item { margin-top: 8px; }
.catalog-item.added { background: var(--good-soft); border-color: var(--good); }
.catalog-main { flex: 1; min-width: 0; display: grid; gap: 4px; }
.catalog-main pre { margin-top: 6px; }
.catalog-item .btn { flex: none; }
.slots { font-weight: 700; font-size: 0.9rem; color: var(--muted); }
.slots.full { color: var(--bad); }
.attempt-old { border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; }
.attempt-old > summary { cursor: pointer; }
.attempt-old[open] > .result { margin-top: 10px; border: 0; padding: 0; }
.final-banner .spinner { display: inline-block; width: 18px; height: 18px; border-width: 3px; vertical-align: -3px; margin-right: 8px; }
.final-banner { border: 2px solid var(--accent); background: var(--accent-soft); border-radius: 12px; padding: 12px 16px; }
.final-banner.done { border-color: var(--good); background: var(--good-soft); }
@media (max-width: 560px) { .skill-preview { display: none; } }
.skill.off { opacity: 0.6; }
.skill .grid { display: grid; gap: 10px; }
.counter { font-size: 0.78rem; color: var(--muted); text-align: right; margin-top: 2px; }
.counter.over { color: var(--bad); font-weight: 700; }
.problems { margin: 8px 0 0; padding-left: 18px; color: var(--bad); font-size: 0.875rem; }
.save-state { font-size: 0.85rem; color: var(--muted); }
.save-state.err { color: var(--bad); }
.toggle { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.875rem; cursor: pointer; }

.run-box { border: 2px dashed var(--accent); border-radius: var(--radius); padding: 16px; text-align: center; }
.progress { font-weight: 600; color: var(--accent); }

/* Step 2 overlay: three numbered callouts on the real game screen */
.eyebrow { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin: 0; }
.tour-host { position: relative; border-radius: var(--radius); }
.tour-backdrop { position: fixed; inset: 0; background: rgb(10 8 5 / 62%); z-index: 50; cursor: pointer; }
.tour-lift { position: relative; z-index: 51; border-radius: var(--radius); }
.tour-lift.sticky { position: sticky; overflow: visible; max-height: none; }
.tour-1 { box-shadow: 0 0 0 5px #2f6fed; }
.tour-2 { box-shadow: 0 0 0 5px #ee7a3a; }
.tour-3 { box-shadow: 0 0 0 5px #2e9e5b; }
/* Pill sits ON the panel's top edge, so it never covers the panel's content. */
.tour-tag {
  position: absolute; top: 0; left: 16px; transform: translateY(-50%); z-index: 52; max-width: calc(100% - 32px);
  display: flex; gap: 10px; align-items: center; padding: 6px 14px 6px 6px; border-radius: 999px;
  color: #fff; font-size: 0.9rem; line-height: 1.25; box-shadow: 0 4px 14px rgb(0 0 0 / 35%); pointer-events: none;
}
.tour-tag b { font-size: 1rem; margin-right: 6px; }
.tour-text { opacity: 0.95; }
/* The sticky score can only travel inside its column, so that column must be as tall as the page. */
.play > section:last-child { align-self: stretch; }
.score-pin { position: sticky; top: 73px; z-index: 4; box-shadow: 0 6px 18px rgb(0 0 0 / 18%); }
.tour-score { z-index: 51; }
.panel.tour-lift { padding-top: 40px; }
.tour-host.tour-lift { padding-top: 26px; }
.tour-banner .btn { white-space: nowrap; }
.tour-tag-1 { background: #2f6fed; }
.tour-tag-2 { background: #d9642a; }
.tour-tag-3 { background: #23864c; }
.tour-num {
  flex: none; width: 32px; height: 32px; border-radius: 50%; background: #fff; display: grid; place-items: center;
  font-weight: 800; font-size: 1.3rem;
}
.tour-tag-1 .tour-num { color: #2f6fed; }
.tour-tag-2 .tour-num { color: #d9642a; }
.tour-tag-3 .tour-num { color: #23864c; }
.tour-banner {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 53;
  width: min(720px, calc(100% - 32px)); display: flex; gap: 16px; align-items: center; justify-content: space-between;
  background: var(--panel); color: var(--ink); border-radius: 16px; padding: 16px 20px; box-shadow: 0 10px 40px rgb(0 0 0 / 40%);
}
.tour-banner-title { font-weight: 800; font-size: 1.25rem; }
@media (max-width: 560px) {
  .tour-tag { font-size: 0.82rem; }
  .tour-text { display: none; }
  .tour-banner { bottom: 12px; padding: 10px 12px; gap: 10px; }
  .tour-banner .eyebrow { display: none; }
  .tour-banner-title { font-size: 1rem; }
  .tour-banner .btn.big { padding: 9px 14px; font-size: 0.95rem; }
}

/* Score meter */
.meter { display: grid; gap: 8px; }
.meter-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.meter-label { font-weight: 700; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.meter-num { font-weight: 800; font-size: 2.2rem; line-height: 1; font-variant-numeric: tabular-nums; }
.meter-num small { font-size: 0.45em; color: var(--muted); font-weight: 600; margin-left: 2px; }
.meter-lg .meter-num { font-size: 3.4rem; }
.meter-track { position: relative; height: 14px; border-radius: 99px; overflow: visible; }
.meter-lg .meter-track { height: 20px; }
.meter-mask { position: absolute; top: 0; bottom: 0; right: 0; background: var(--panel); opacity: 0.78; border-radius: 0 99px 99px 0; }
.meter-pin { position: absolute; top: 50%; width: 26px; height: 26px; border-radius: 50%; background: var(--panel); border: 5px solid; transform: translate(-50%, -50%); box-shadow: 0 1px 4px rgb(0 0 0 / 30%); }
.meter-lg .meter-pin { width: 32px; height: 32px; border-width: 6px; }
.meter-ghost { position: absolute; top: -4px; bottom: -4px; width: 3px; background: var(--ink); opacity: 0.35; transform: translateX(-50%); border-radius: 2px; }
.meter-note { font-size: 0.9rem; color: var(--ink); }
.callout .meter-mask { background: var(--accent-soft); }

/* Results */
.result { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.score { font-size: 2.6rem; font-weight: 800; line-height: 1; }
.score small { font-size: 1rem; color: var(--muted); font-weight: 600; }
.delta.up { color: var(--good); font-weight: 700; }
.delta.down { color: var(--bad); font-weight: 700; }
.facet { margin-top: 12px; }
.bar { height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; margin: 4px 0 6px; }
.bar > span { display: block; height: 100%; background: var(--good); }
.checks { list-style: none; margin: 0; padding: 0; font-size: 0.9rem; }
.checks li { padding: 2px 0; display: flex; gap: 8px; }
.checks .ok { color: var(--good); }
.checks .no { color: var(--bad); }
.checks .detail { color: var(--muted); font-size: 0.82rem; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-size: 0.8rem; padding: 2px 9px; border-radius: 99px; background: var(--good-soft); color: var(--good); font-family: var(--mono); }
.chip.miss { background: var(--bad-soft); color: var(--bad); }
.cost { font-family: var(--mono); font-size: 0.85rem; background: var(--code-bg); padding: 8px 10px; border-radius: 8px; }
details summary { cursor: pointer; font-weight: 600; }

/* Leaderboard */
.table-wrap { overflow-x: auto; max-width: 100%; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
tr.me td { background: var(--accent-soft); font-weight: 700; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.rank { font-weight: 800; }

dialog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); color: var(--ink); max-width: 640px; width: calc(100% - 32px); padding: 20px; }
.modal-pre { max-height: 55vh; overflow: auto; }
dialog::backdrop { background: rgb(0 0 0 / 45%); }

@media (max-width: 960px) {
  .play, .steps { grid-template-columns: minmax(0, 1fr); }
  .tabs { overflow-x: auto; flex-wrap: nowrap; }
  .sticky { position: static; max-height: none; }
  /* One column: score, mission, skills, run, then results. */
  .play { display: flex; flex-direction: column; gap: 16px; align-items: stretch; }
  .play > section { display: contents; }
  .score-pin { order: 1; } .o-mission { order: 2; } .o-skills { order: 3; } .o-run { order: 4; } .o-results { order: 5; } .o-board { order: 6; }
}
@media (max-width: 560px) {
  .topbar { position: static; }
  .score-pin { top: 0; padding: 10px 14px; }
  .score-pin .meter-lg .meter-num { font-size: 2.2rem; }
  .score-pin .meter-note { display: none; }
}
@media (max-width: 560px) {
  main { padding: 16px 16px 48px; }
  .hero form { flex-direction: column; }
  .topbar { flex-direction: column; align-items: flex-start; }
  th, td { padding: 6px 5px; }
  th { font-size: 0.7rem; letter-spacing: 0; }
}