*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
}

body {
  min-height: 100dvh;
  font-family: var(--ak-font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--ak-ink);
  background-color: var(--ak-bg);
  background-image: var(--ak-bg-art);
  background-size: var(--ak-bg-size);
}

button {
  font-family: inherit;
  touch-action: manipulation;
}

img {
  display: block;
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

.play {
  --pad-top: max(6px, env(safe-area-inset-top, 0px));
  --pad-bot: max(8px, env(safe-area-inset-bottom, 0px));
  --pad-x: max(4px, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px));
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: min(100%, 440px);
  height: 100dvh;
  max-height: 100dvh;
  margin: 0 auto;
  padding: var(--pad-top) var(--pad-x) var(--pad-bot);
  overflow: hidden;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  background-color: transparent;
  background-image: var(--ak-backdrop-layer);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

.mute {
  position: absolute;
  top: var(--pad-top);
  right: var(--pad-x);
  z-index: 6;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 2px solid var(--ak-outline);
  border-radius: var(--ak-radius);
  background: var(--ak-surface);
  color: var(--ak-ink);
  box-shadow: var(--ak-shadow);
}

.mute-icon {
  width: 26px;
  height: 26px;
  margin: 0 auto;
}

.mute.is-muted .wave {
  opacity: 0;
}

.top {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding-right: 52px;
}

.play-logo {
  width: auto;
  height: 44px;
  flex: 0 0 auto;
  object-fit: contain;
}

.turn {
  min-width: 0;
  flex: 1 1 auto;
  padding: 4px 8px;
  background: var(--ak-surface);
  border: 2px solid var(--ak-outline);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
}

.turn-who,
.turn-sub,
.goal,
.voice,
.why-text,
.result-says {
  margin: 0;
}

.turn-who {
  font-family: var(--ak-font-display);
  font-weight: var(--ak-title-weight);
  font-size: 22px;
  line-height: 1;
  letter-spacing: 0.01em;
}

.turn-sub {
  color: var(--ak-ink-muted);
  font-size: 13px;
}

.goal {
  padding: 6px 8px;
  background: var(--ak-surface);
  border: 2px solid var(--ak-outline);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
  font-size: 15px;
  line-height: 1.2;
}

.bench {
  flex: 1 1 auto;
  min-height: 0;
  container-type: size;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagram {
  position: relative;
  width: min(100%, calc((100dvh - 228px) * 384 / 293));
  max-height: 100%;
  aspect-ratio: 384 / 293;
  background-image: url("./art/diagram-board.png");
  background-size: 100% 100%;
  background-repeat: no-repeat;
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow), 0 10px 0 color-mix(in srgb, var(--ak-accent) 35%, transparent);
}

@supports (width: 1cqw) {
  .diagram {
    width: min(100cqw, calc(100cqh * 384 / 293));
    max-height: none;
  }
}

.play.is-ended .goal,
.play.is-ended .voice,
.play.is-ended .dock {
  display: none;
}

.squares,
.burst,
.glint {
  position: absolute;
}

.squares {
  inset: 0;
}

.sq {
  position: absolute;
  display: grid;
  place-items: center;
  min-width: 48px;
  min-height: 48px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  transform: translate(-50%, -58%);
}

.sq:focus {
  outline: none;
}

.sq:focus-visible {
  outline: 3px solid var(--ak-focus);
  outline-offset: 1px;
  border-radius: 8px;
}

.piece {
  position: relative;
  z-index: 1;
  width: 70%;
  height: 92%;
  object-fit: contain;
  object-position: center bottom;
  pointer-events: none;
  transform-origin: 50% 82%;
  filter: drop-shadow(0 3px 0 color-mix(in srgb, var(--ak-ink) 35%, transparent));
}

.ring {
  position: absolute;
  z-index: 0;
  width: 168%;
  height: 168%;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  object-fit: contain;
  pointer-events: none;
  opacity: 0;
}

.sq.is-hint .ring {
  opacity: 1;
}

.sq.is-legal::after,
.sq.is-escape::after {
  content: "";
  position: absolute;
  z-index: 2;
  pointer-events: none;
}

.sq.is-legal::after {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ak-accent-2);
  box-shadow: 0 0 0 2px var(--ak-outline);
  bottom: 10%;
}

.sq.is-escape::after {
  width: 74%;
  height: 74%;
  border: 3px solid var(--ak-accent-2);
  border-radius: 8px;
  box-shadow: 0 0 0 2px var(--ak-ink);
}

.sq.is-picked .piece {
  transform: translateY(-8px);
}

.sq.is-loose .piece {
  filter: drop-shadow(0 0 0 var(--ak-accent-2)) drop-shadow(0 0 8px var(--ak-accent-2));
}

.glint {
  left: 0;
  top: 0;
  height: 8px;
  transform-origin: 0 50%;
  border-radius: 99px;
  background: linear-gradient(90deg, transparent, var(--ak-accent-2), #fff6d2, var(--ak-accent-2), transparent);
  box-shadow: 0 0 12px var(--ak-accent-2);
  pointer-events: none;
  z-index: 4;
}

.burst {
  inset: 0;
  pointer-events: none;
  z-index: 5;
  overflow: visible;
}

.bit {
  position: absolute;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 2px;
  background: var(--ak-accent-2);
}

.dock {
  display: flex;
  justify-content: flex-end;
}

.hint,
.btn-go,
.btn-alt {
  min-height: 48px;
  min-width: 48px;
  border: 2px solid var(--ak-outline);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
  font-size: 16px;
  font-weight: 700;
}

.hint,
.btn-go {
  padding: 8px 16px;
  background: var(--ak-btn-fill);
  color: var(--ak-btn-ink);
}

.btn-alt {
  padding: 8px 12px;
  background: var(--ak-choice-bg);
  color: var(--ak-choice-ink);
}

.hint:focus-visible,
.btn-go:focus-visible,
.btn-alt:focus-visible,
.mute:focus-visible {
  outline: 3px solid var(--ak-focus);
  outline-offset: 2px;
}

.voice {
  min-height: 2.5em;
  padding: 6px 8px;
  background: var(--ak-surface);
  border: 2px solid var(--ak-outline);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
  font-size: 16px;
}

.why {
  position: relative;
  z-index: 4;
  align-self: center;
  width: min(100%, 300px);
  min-height: 0;
}

.why-art {
  width: 100%;
  height: auto;
  max-height: 92px;
  object-fit: contain;
  object-position: center;
}

.why-text {
  position: absolute;
  left: 20%;
  right: 8%;
  top: 40%;
  margin: 0;
  padding: 3px 6px;
  font-size: 14px;
  line-height: 1.15;
  color: var(--ak-ink);
  background: color-mix(in srgb, var(--ak-surface) 88%, transparent);
  border-radius: 8px;
}

.result {
  position: relative;
  z-index: 5;
}

.result-card {
  padding: 12px;
  background: var(--ak-surface);
  color: var(--ak-ink);
  border: 2px solid var(--ak-outline);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
}

.result-says {
  margin: 0 0 10px;
  font-family: var(--ak-font-display);
  font-weight: var(--ak-title-weight);
  font-size: 26px;
  line-height: 1;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.result-actions button {
  flex: 1 1 140px;
}

@media (prefers-reduced-motion: reduce) {
  .piece.is-tip {
    transform: rotate(68deg);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .play-logo {
    animation: logo-idle 3.2s ease-in-out infinite;
  }

  .turn.is-cue {
    animation: turn-cue 420ms cubic-bezier(0.34, 1.56, 0.64, 1);
  }

  .piece {
    animation: piece-idle 2.8s ease-in-out infinite;
  }

  .sq:nth-child(2n) .piece {
    animation-delay: 0.25s;
  }

  .sq:nth-child(3n) .piece {
    animation-delay: 0.5s;
  }

  .sq.is-picked .piece:not(.is-seat):not(.is-snap):not(.is-glide):not(.is-tip) {
    animation: none;
  }

  .piece.is-seat {
    animation: seat 480ms cubic-bezier(0.34, 1.56, 0.64, 1);
  }

  .piece.is-snap {
    animation: snap 420ms cubic-bezier(0.34, 1.2, 0.64, 1);
  }

  .piece.is-glide {
    animation: glide 540ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .piece.is-tip {
    animation: tip 720ms cubic-bezier(0.34, 1.15, 0.64, 1) forwards;
  }

  .sq.is-hint .ring {
    animation: ring-wobble 1.4s ease-in-out infinite;
  }

  .sq.is-legal::after {
    animation: dot-pop 280ms cubic-bezier(0.34, 1.56, 0.64, 1);
  }

  .glint:not([hidden]) {
    animation: glint-run 700ms ease-out;
  }

  .diagram.is-won {
    animation: board-glow 900ms ease-in-out 2;
  }

  .bit {
    animation: bit-fly 780ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  .why.is-out {
    animation: slip-out 460ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .sq:active .piece,
  .hint:active,
  .btn-go:active,
  .btn-alt:active,
  .mute:active {
    transform: scale(0.94);
  }

  .sq.is-picked .piece {
    transform: translateY(-10px) scale(1.08, 0.94);
  }
}

@keyframes logo-idle {
  0%,
  100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

@keyframes turn-cue {
  0% { transform: scale(1); }
  45% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

@keyframes piece-idle {
  0%,
  100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes seat {
  0% { transform: translateY(-22px) scale(1.12, 0.82); }
  58% { transform: translateY(4px) scale(0.92, 1.1); }
  100% { transform: translateY(0) scale(1); }
}

@keyframes snap {
  0% { transform: translate(0, 0) scale(1); }
  38% { transform: translate(var(--dx), var(--dy)) scale(1.06, 0.88); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes glide {
  0% { transform: translate(var(--dx), var(--dy)) scale(1.04, 0.9); }
  72% { transform: translate(0, -8px) scale(0.96, 1.08); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes tip {
  0% { transform: rotate(0deg); }
  55% { transform: rotate(78deg) translateY(4px); }
  100% { transform: rotate(68deg); }
}

@keyframes ring-wobble {
  0%,
  100% { transform: translate(-50%, -50%) rotate(-4deg); }
  50% { transform: translate(-50%, -54%) rotate(5deg); }
}

@keyframes dot-pop {
  0% { transform: scale(0.4); }
  100% { transform: scale(1); }
}

@keyframes glint-run {
  0% { opacity: 0; filter: brightness(1); }
  30% { opacity: 1; }
  100% { opacity: 0.2; filter: brightness(1.6); }
}

@keyframes board-glow {
  0%,
  100% { box-shadow: var(--ak-shadow); }
  50% { box-shadow: 0 0 0 4px var(--ak-accent-2), var(--ak-shadow); }
}

@keyframes bit-fly {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% {
    transform: rotate(var(--a)) translateX(var(--d)) scale(0.4);
    opacity: 0;
  }
}

@keyframes slip-out {
  0% { transform: translateY(120%); }
  100% { transform: translateY(0); }
}