:root {
  color-scheme: dark;
  --bg: #080b16;
  --panel: rgba(15, 22, 42, .86);
  --panel-2: rgba(23, 34, 62, .84);
  --ink: #f8fbff;
  --muted: #a8b3c8;
  --line: rgba(255,255,255,.14);
  --cyan: #45e6ff;
  --pink: #ff4faf;
  --gold: #ffd166;
  --green: #8cff8c;
}

.faceoff-body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 14%, rgba(69,230,255,.22), transparent 24%),
    radial-gradient(circle at 82% 12%, rgba(255,79,175,.2), transparent 22%),
    linear-gradient(145deg, #070914, #11182a 48%, #070914);
}

.faceoff-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 46px;
}

.faceoff-hero,
.score-strip,
.arena-layout {
  display: grid;
  gap: 16px;
}

.faceoff-hero {
  grid-template-columns: minmax(0, 1fr) 330px;
  align-items: end;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.02)),
    rgba(8, 11, 22, .72);
  box-shadow: 0 26px 90px rgba(0,0,0,.36);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(3rem, 9vw, 6.4rem);
  line-height: .9;
  letter-spacing: 0;
}

.lede {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.55;
}

.setup-panel {
  display: grid;
  gap: 10px;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  color: var(--ink);
  background: rgba(0,0,0,.24);
}

button {
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 900;
}

.primary {
  color: #08111e;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 14px 28px rgba(69,230,255,.18);
}

.secondary {
  color: var(--ink);
  background: rgba(255,255,255,.08);
  border: 1px solid var(--line);
}

.score-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 16px 0;
}

.score-strip div,
.arena-card,
.side-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.score-strip div {
  padding: 12px;
}

.score-strip span {
  display: block;
  color: var(--muted);
  font-size: .75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.score-strip strong {
  display: block;
  margin-top: 6px;
}

.arena-layout {
  grid-template-columns: minmax(320px, 1fr) 350px;
  align-items: start;
}

.arena-card {
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,0)),
    rgba(8,11,22,.86);
}

.challenge-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.09);
}

.track-item {
  padding: 10px 8px;
  color: var(--muted);
  background: rgba(255,255,255,.04);
  font-size: .78rem;
  font-weight: 900;
  text-align: center;
}

.track-item.is-active {
  color: #07111f;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
}

.track-item.is-done {
  color: var(--green);
}

.challenge-stage {
  min-height: 500px;
  padding: clamp(18px, 4vw, 34px);
  display: grid;
  align-content: start;
  gap: 14px;
}

.stage-kicker {
  margin: 0;
  color: var(--pink);
  font-size: .8rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.challenge-stage h2 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: .95;
}

.challenge-stage p {
  color: var(--muted);
  line-height: 1.5;
}

.playfield {
  min-height: 270px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 50%, rgba(69,230,255,.14), transparent 42%),
    rgba(0,0,0,.22);
  overflow: hidden;
}

.target-grid,
.choice-grid,
.pattern-grid {
  display: grid;
  gap: 12px;
  width: min(360px, 100%);
}

.target-grid {
  grid-template-columns: repeat(3, 1fr);
}

.pattern-grid,
.choice-grid {
  grid-template-columns: repeat(2, 1fr);
}

.target-cell,
.pattern-cell,
.choice-button {
  min-height: 86px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
}

.target-cell.is-hot,
.pattern-cell.is-lit {
  background: radial-gradient(circle, var(--gold), var(--pink));
  box-shadow: 0 0 34px rgba(255,79,175,.4);
}

.choice-button {
  font-size: 2.6rem;
}

.ring-wrap {
  width: min(300px, 80vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(255,79,175,.2), var(--cyan), var(--gold), rgba(255,79,175,.2));
  box-shadow: 0 0 60px rgba(69,230,255,.25);
}

.ring-core {
  width: 72%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #0b1020;
  border: 1px solid rgba(255,255,255,.14);
  font-size: 2.8rem;
  font-weight: 900;
}

.logic-answer {
  font-size: 2rem;
  font-weight: 900;
}

.side-panel {
  display: grid;
  gap: 18px;
  padding: 18px;
}

.steps {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.5;
}

.steps strong {
  color: var(--ink);
}

.share-panel {
  display: grid;
  gap: 10px;
}

.results-panel {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.results-panel h2 {
  margin: 0 0 8px;
}

.round-breakdown {
  display: grid;
  gap: 8px;
}

.round-breakdown div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px;
  border-radius: 8px;
  background: rgba(255,255,255,.06);
}

@media (max-width: 880px) {
  .faceoff-hero,
  .score-strip,
  .arena-layout {
    grid-template-columns: 1fr;
  }

  .challenge-stage {
    min-height: 430px;
  }
}