* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--yao-ink);
  color: var(--yao-bone);
  font-family: var(--yao-font-sans);
}

main {
  max-width: 32rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 2rem;
}

.hero h1 {
  margin: 0.85rem 0 0.35rem;
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.045em;
}

.tagline {
  margin: 0 0 1rem;
  color: var(--yao-bone-70);
  font-size: 1rem;
  line-height: 1.35;
}

.mark-frame {
  width: min(9.5rem, 42vw);
}

.mark-frame .yao-mark {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  color: var(--yao-bone);
  fill: currentColor;
}

.mark-frame .yao-mark path {
  fill: currentColor;
}

.hero .yao-divider {
  margin: 0.25rem 0 1.1rem;
}

.panel {
  background: var(--yao-ink-2);
  border: 1px solid var(--yao-line);
  border-radius: var(--yao-radius-card);
  padding: 1rem 1rem 1.15rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: var(--yao-bone-70);
}

.field input {
  padding: 0.7rem 0.75rem;
  border-radius: var(--yao-radius);
  border: 1px solid var(--yao-line);
  background: var(--yao-ink);
  color: var(--yao-bone);
  font: inherit;
  font-size: 1rem;
}

#room-input {
  font-family: var(--yao-font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.row {
  display: flex;
  gap: 0.5rem;
}

.btn {
  border: 1px solid transparent;
  border-radius: var(--yao-radius);
  min-height: 48px;
  padding: 0.75rem 1rem;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.btn.wide {
  width: 100%;
  margin-top: 0.5rem;
}

.btn.primary,
.btn.accent {
  background: var(--yao-accent);
  color: var(--yao-on-accent);
  flex: 1;
}

.btn.secondary {
  background: transparent;
  color: var(--yao-bone);
  border-color: var(--yao-line);
}

.btn.choice {
  width: 100%;
  text-align: left;
  background: var(--yao-ink);
  color: var(--yao-bone);
  border-color: var(--yao-line);
  padding: 1rem 1.1rem;
  line-height: 1.35;
  min-height: 4.25rem;
  flex: none;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.choice-digit {
  flex-shrink: 0;
  width: 1.75rem;
  font-family: var(--yao-font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: var(--yao-mono-ls);
  color: var(--yao-bone-70);
}

.choice-label {
  flex: 1;
  min-width: 0;
}

.btn.choice:disabled {
  cursor: default;
}

.btn.choice.selected {
  outline: 2px solid var(--yao-bone);
  outline-offset: 2px;
}

.btn.choice.correct {
  border-color: var(--yao-bone);
  border-width: 2px;
}

.btn.choice.correct::after {
  content: "correct";
  display: block;
  margin-top: 0.35rem;
  font-family: var(--yao-font-mono);
  font-size: var(--yao-mono-size);
  font-weight: 500;
  letter-spacing: var(--yao-mono-ls);
  color: var(--yao-bone);
}

.btn.choice.wrong {
  color: var(--yao-bone-70);
  border-color: var(--yao-line);
}

.error {
  color: var(--yao-bone-70);
  font-size: 0.9rem;
  margin: 0.75rem 0 0;
}

.game-header {
  margin-bottom: 1rem;
  text-align: center;
}

.room-code-label {
  margin: 0;
  color: var(--yao-bone-70);
  font-family: var(--yao-font-mono);
  font-size: var(--yao-mono-size);
  letter-spacing: var(--yao-mono-ls);
  text-transform: uppercase;
}

.room-code {
  margin: 0.15rem 0 0.35rem;
  font-family: var(--yao-font-mono);
  font-size: clamp(2rem, 10vw, 2.75rem);
  font-weight: 600;
  letter-spacing: 0.2em;
  line-height: 1.1;
}

.phase {
  display: inline-block;
  color: var(--yao-bone-70);
  font-family: var(--yao-font-mono);
  font-size: var(--yao-mono-size);
  letter-spacing: var(--yao-mono-ls);
  text-transform: capitalize;
}

.start-hint {
  margin: 0.5rem 0 0;
  color: var(--yao-bone-70);
  font-size: 0.9rem;
  text-align: center;
}

.player-list,
.scoreboard {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}

.player-list li,
.scoreboard li {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--yao-line);
  font-size: 0.95rem;
}

.player-list li.away,
.scoreboard li.away {
  color: var(--yao-bone-70);
}

.player-list .badges {
  display: flex;
  gap: 0.55rem;
  color: var(--yao-bone-70);
  font-family: var(--yao-font-mono);
  font-size: var(--yao-mono-size);
  letter-spacing: var(--yao-mono-ls);
}

.badge.host,
.badge.ready,
.badge.you,
.badge.away-label {
  color: var(--yao-bone-70);
}

#round-panel {
  margin-top: 0.25rem;
}

.round-meta {
  margin: 0 0 0.35rem;
  color: var(--yao-bone-70);
  font-family: var(--yao-font-mono);
  font-size: var(--yao-mono-size);
  letter-spacing: var(--yao-mono-ls);
}

.timer {
  margin: 0;
  color: var(--yao-bone);
  font-family: var(--yao-font-mono);
  font-size: clamp(1.75rem, 6vw, 2.25rem);
  font-weight: 600;
}

.yao-clock {
  height: 6px;
  margin: 0.45rem 0 0.9rem;
  background: var(--yao-line);
  clip-path: polygon(18.5px 0, 100% 0, calc(100% - 18.5px) 100%, 0 100%);
}

#timer-bar {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--yao-accent);
  transform-origin: left center;
}

.prompt {
  font-size: clamp(1.15rem, 4vw, 1.35rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
}

.choices {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.scoreboard li.winner-row {
  color: var(--yao-bone);
  font-weight: 600;
}

.status {
  margin: 1rem 0 0;
  color: var(--yao-bone-70);
  font-size: 0.85rem;
  min-height: 1.2em;
}

.credit {
  display: flex;
  justify-content: center;
  margin-top: 1.75rem;
}

.credit img {
  width: 7.5rem;
  height: auto;
}

@media (max-width: 420px) {
  main {
    padding-inline: 0.75rem;
  }

  .row {
    flex-direction: column;
  }

  .btn.primary,
  .btn.secondary,
  .btn.accent {
    width: 100%;
  }
}