:root {
  color-scheme: dark;
  --bg: #4D4D4D;
  --panel: #242424;
  --panel-soft: #303030;
  --text: #f7f0e7;
  --muted: #b7aaa0;
  --line: rgba(247, 240, 231, 0.18);
  --accent: #e95b4a;
  --accent-2: #f7b267;
  --shadow: rgba(0, 0, 0, 0.42);
  --card-radius-x: 6.6667%;
  --card-radius-y: 4%;
  --card-shadow: 0 28px 38px rgba(0, 0, 0, 0.44);
  --card-width: min(76vw, 330px);
  --card-half-height: min(63.333vw, 275px);
  --background-image: url("assets/cards/BG-01.svg");
  --twist-pink-image: url("assets/cards/twist_pink-01.svg");
  --twist-green-image: url("assets/cards/twist_green-01.svg");
}

* {
  box-sizing: border-box;
}

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

body {
  position: relative;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  overscroll-behavior: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.bg-pattern,
.bg-twist {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  contain: layout paint style;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.bg-pattern {
  z-index: 1;
  width: 100vw;
  height: 100vh;
  height: 100lvh;
  background-image: var(--background-image);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transform: translateZ(0);
}

.bg-twist {
  z-index: 0;
  top: 50%;
  left: 50%;
  width: max(160vw, 160vh);
  width: max(160vw, 160lvh);
  height: max(160vw, 160vh);
  height: max(160vw, 160lvh);
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
  transform-origin: center;
}

.bg-twist-pink {
  background-image: var(--twist-pink-image);
}

.bg-twist-green {
  background-image: var(--twist-green-image);
}

body.has-countdown .bg-twist {
  animation: twist-spin 1s linear infinite;
}

body.has-countdown .bg-twist-pink {
  animation: twist-spin 1s linear infinite, twist-pink-swap 1.2s steps(1, end) infinite;
}

body.has-countdown .bg-twist-green {
  animation: twist-spin 1s linear infinite, twist-green-swap 1.2s steps(1, end) infinite;
}

button {
  color: inherit;
  font: inherit;
}

.app-shell {
  position: relative;
  z-index: 2;
  height: 100vh;
  height: 100svh;
  display: grid;
  place-items: center;
  padding: max(18px, env(safe-area-inset-top)) 18px max(18px, env(safe-area-inset-bottom));
  overflow: hidden;
}

.game {
  width: min(100%, 440px);
  height: calc(100vh - 36px);
  height: calc(100svh - 36px);
  display: grid;
  place-items: center;
}

.card-stage {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.deck-button {
  position: relative;
  width: var(--card-width);
  aspect-ratio: 3 / 5;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: var(--card-radius-x) / var(--card-radius-y);
  background: transparent;
  padding: 0;
  cursor: pointer;
  touch-action: pan-y;
  perspective: 1400px;
}

.deck-button:focus-visible {
  outline: 3px solid rgba(247, 178, 103, 0.85);
  outline-offset: 10px;
}

.card-tilt {
  position: relative;
  width: 100%;
  height: 100%;
  display: block;
  transform-style: preserve-3d;
  transition: transform 180ms ease;
}

.deck-button.is-dragging .card-tilt {
  transform: translateX(var(--drag-x, 0px)) rotateZ(var(--drag-rot, 0deg)) scale(0.99);
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  display: block;
  transform-style: preserve-3d;
  border-radius: var(--card-radius-x) / var(--card-radius-y);
  box-shadow: var(--card-shadow);
  will-change: transform;
}

.card-tilt.has-result .card-inner {
  opacity: 1;
}

.card-inner.is-spinning {
  animation: card-spin var(--spin-duration, 1150ms) linear both;
}

.card-inner.is-front {
  transform: rotateY(var(--final-rotation, 1260deg));
}

.card-face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--card-radius-x) / var(--card-radius-y);
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.result-card {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--card-radius-x) / var(--card-radius-y);
  object-fit: cover;
  opacity: 0;
  user-select: none;
  pointer-events: none;
  -webkit-user-drag: none;
  box-shadow: var(--card-shadow);
}

.card-tilt.has-result .result-card {
  opacity: 0;
}

.countdown-panel {
  position: absolute;
  left: 50%;
  bottom: calc(50% + var(--card-half-height) + 18px);
  z-index: 5;
  display: grid;
  place-items: center;
  gap: 4px;
  transform: translateX(-50%);
  color: #FFDD00;
  font-size: 32px;
  line-height: 1;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  text-align: center;
  text-shadow: 0 5px 14px rgba(0, 0, 0, 0.42);
  pointer-events: none;
  white-space: nowrap;
}

.countdown-panel[hidden] {
  display: none;
}

.card-front {
  transform: rotateY(180deg) translateZ(2px);
}

.card-back {
  transform: rotateY(0deg) translateZ(2px);
}

.deck-button:disabled {
  cursor: wait;
}

.boom-screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #FFEE82;
}

.boom-screen[hidden] {
  display: none;
}

.boom-pattern {
  position: fixed;
  inset: 0;
  z-index: 0;
  --boom-swap-opacity: 0.5;
  display: none;
  width: 100vw;
  height: 100svh;
  object-fit: cover;
  mix-blend-mode: multiply;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.boom-screen.is-playing .boom-pattern {
  display: block;
}

.boom-screen.is-playing .boom-pattern:not(.boom-pattern-alt) {
  animation: boom-swap-primary 0.25s steps(1, end) infinite;
}

.boom-screen.is-playing .boom-pattern-alt {
  animation: boom-swap-secondary 0.25s steps(1, end) infinite;
}

.boom-layout {
  position: relative;
  z-index: 1;
  width: min(100vw, calc(100svh * 403 / 717));
  aspect-ratio: 403 / 717;
}

.boom-title {
  position: absolute;
  z-index: 6;
  left: 50%;
  top: 0%;
  width: 52%;
  height: auto;
  object-fit: contain;
  transform: translateX(-50%);
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.boom-fire {
  position: absolute;
  left: 50%;
  top: 6%;
  width: 81.6%;
  object-fit: contain;
  z-index: 4;
  transform: translateX(-50%);
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.boom-fire-alt {
  opacity: 0;
}

.boom-screen.is-playing .boom-fire:not(.boom-fire-alt) {
  animation: boom-swap-primary 0.3s steps(1, end) infinite;
}

.boom-screen.is-playing .boom-fire-alt {
  animation: boom-swap-secondary 0.3s steps(1, end) infinite;
}

.boom-bomb-wrap {
  position: absolute;
  left: 50%;
  top: 7.25%;
  width: 80.9%;
  aspect-ratio: 326 / 538;
  transform: translateX(-50%);
}

.boom-bomb {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 23%;
  width: 110%;
  height: auto;
  object-fit: contain;
  transform: translateX(-50%);
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.boom-screen.is-playing .boom-bomb {
  animation: boom-bomb-shake 0.2s steps(1, end) infinite;
  transform-origin: 50% 52%;
}

.boom-state-art {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 60%;
  width: 68%;
  height: auto;
  object-fit: contain;
  transform: translateX(-50%);
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.boom-screen.is-playing .boom-state-art {
  top: 65%;
  width: 67%;
}

.boom-copy {
  position: absolute;
  z-index: 4;
  left: 50%;
  width: 58%;
  min-height: 58px;
  display: grid;
  place-items: center;
  gap: 4px;
  text-align: center;
  font-weight: 800;
  line-height: 1.32;
  pointer-events: none;
  transform: translateX(-50%);
}

.boom-copy[hidden] {
  display: none;
}

.boom-copy-play {
  top: 59.5%;
  color: #ff6b2c;
  font-size: 22px;
}

#boomPromptText {
  display: block;
  width: 100%;
  text-align: center;
  white-space: pre-line;
  overflow-wrap: anywhere;
  align-self: center;
}

.boom-image-button {
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.boom-image-button img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.boom-start-button {
  position: absolute;
  z-index: 5;
  left: 50%;
  top: 90%;
  width: 25.7%;
  transform: translateX(-50%);
}

.boom-actions {
  position: absolute;
  left: 50%;
  top: auto;
  bottom: 0%;
  display: grid;
  place-items: center;
  gap: 14px;
  width: 100%;
  transform: translateX(-50%);
}

.boom-restart-button {
  width: min(42vw, 176px);
}

.boom-back-button {
  width: 36.2%;
}

.boom-screen.is-playing .boom-start-button {
  display: none;
}

.boom-screen.is-ended .boom-fire,
.boom-screen.is-ended .boom-start-button,
.boom-screen.is-ended .boom-state-art,
.boom-screen.is-ended .boom-title,
.boom-screen.is-ended .boom-copy-play {
  display: none;
}

.boom-screen.is-ended .boom-bomb-wrap {
  width: 80.9%;
}

@keyframes boom-swap-primary {
  0%,
  49.99% {
    opacity: var(--boom-swap-opacity, 1);
  }

  50%,
  100% {
    opacity: 0;
  }
}

@keyframes boom-swap-secondary {
  0%,
  49.99% {
    opacity: 0;
  }

  50%,
  100% {
    opacity: var(--boom-swap-opacity, 1);
  }
}

@keyframes boom-bomb-shake {
  0%,
  100% {
    transform: translateX(-50%) rotate(-1deg);
  }

  50% {
    transform: translateX(-50%) rotate(1deg);
  }
}

@keyframes card-spin {
  0% {
    transform: rotateY(0deg) rotateZ(0deg) scale(1);
  }
  100% {
    transform: rotateY(var(--final-rotation)) rotateZ(0deg) scale(1);
  }
}

@keyframes twist-spin {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes twist-pink-swap {
  0%,
  49.999% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@keyframes twist-green-swap {
  0%,
  49.999% {
    opacity: 0;
  }
  50%,
  100% {
    opacity: 1;
  }
}

@media (max-width: 360px) {
  .app-shell {
    padding-left: 14px;
    padding-right: 14px;
  }

  :root {
    --card-width: min(80vw, 286px);
    --card-half-height: min(66.667vw, 238.333px);
  }

  .deck-button {
    border-radius: var(--card-radius-x) / var(--card-radius-y);
  }

  .card-inner,
  .card-face,
  .result-card {
    border-radius: var(--card-radius-x) / var(--card-radius-y);
  }

  .countdown-panel {
    font-size: 28px;
  }

  .boom-copy-play {
    font-size: 19px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-inner.is-spinning {
    animation-duration: 250ms;
  }

  .card-tilt {
    transition: none;
  }

  body.has-countdown .bg-twist,
  body.has-countdown .bg-twist-pink,
  body.has-countdown .bg-twist-green {
    animation-duration: 3s, 1.2s;
  }
}