.flip-body .flip-game-panel {
  position: relative;
  overflow: hidden;
}

.side-picker {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.side-picker legend {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.side-picker input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.side-picker .side {
  display: grid;
  place-items: center;
  min-height: 2.7rem;
  border-radius: 0.45rem;
  border: 1px solid #335368;
  background: #0d202b;
  color: #dcecf4;
  font-weight: 900;
  cursor: pointer;
}

.side-picker input:focus-visible + .side {
  outline: 3px solid rgba(111, 194, 255, 0.8);
  outline-offset: 2px;
}

.side-picker input:checked + .side.heads {
  border-color: #f2a83a;
  background: #503312;
  color: #fff2d8;
}

.side-picker input:checked + .side.tails {
  border-color: #45a9ff;
  background: #123a59;
  color: #e5f6ff;
}

.profit-card {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem;
  border-radius: 0.45rem;
  background: #142f3d;
}

.profit-card span {
  color: #bdd2de;
}

.flip-stage {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 1rem;
  min-height: 31rem;
  overflow: hidden;
  border-radius: 0.45rem;
  background:
    radial-gradient(circle at 50% 42%, rgba(72, 112, 132, 0.32), transparent 17rem),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.026) 0 0.08rem, transparent 0.08rem 5rem),
    #061b25;
}

.coin {
  position: relative;
  width: 12rem;
  height: 12rem;
  transform-style: preserve-3d;
  transition: transform 0.25s ease;
}

.coin.flipping {
  animation: coin-flip 0.9s cubic-bezier(0.2, 0.7, 0.15, 1);
}

.coin.tails {
  transform: rotateY(180deg);
}

.coin-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  backface-visibility: hidden;
  border: 0.55rem solid rgba(255, 255, 255, 0.18);
  font-size: 4rem;
  font-weight: 950;
  box-shadow:
    inset 0 -1.2rem 2.2rem rgba(0, 0, 0, 0.22),
    0 1.2rem 2.8rem rgba(0, 0, 0, 0.34);
}

.coin-heads {
  background:
    radial-gradient(circle at 50% 45%, #ffd36a 0 18%, transparent 19%),
    radial-gradient(circle at 50% 50%, #ff9f1d, #d36b19);
  color: #241103;
}

.coin-tails {
  transform: rotateY(180deg);
  background:
    linear-gradient(135deg, transparent 39%, rgba(255, 255, 255, 0.55) 40% 46%, transparent 47%),
    radial-gradient(circle at 50% 50%, #55b9ff, #1c6fb0);
  color: #041a2c;
}

.flip-status {
  display: grid;
  justify-items: center;
  gap: 0.25rem;
  text-align: center;
}

.flip-status strong {
  color: #ffffff;
  font-size: 2.2rem;
  line-height: 1;
}

.flip-status span {
  color: #bad0db;
  font-weight: 850;
}

.flip-auto-mode .coin,
.flip-auto-mode .flip-status,
.flip-auto-mode .flip-history {
  display: none;
}

.flip-auto-mode .flip-stage {
  align-content: center;
  gap: 1.25rem;
}

.auto-plan-board[hidden],
.auto-plan-summary[hidden] {
  display: none;
}

.auto-plan-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(4.6rem, 5.4rem));
  justify-content: center;
  align-items: center;
  gap: 1.6rem 1.15rem;
  width: min(37rem, calc(100% - 2rem));
  margin-block: 1rem 0.25rem;
}

.auto-coin-plan {
  position: relative;
  display: grid;
  place-items: center;
  width: 5.4rem;
  aspect-ratio: 1;
  border: 0.12rem solid #335368;
  border-radius: 0.45rem;
  background: #294555;
  cursor: pointer;
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.auto-coin-plan:hover:not(:disabled) {
  border-color: #7eb9d4;
  transform: translateY(-0.08rem);
}

.auto-coin-plan:focus-visible {
  outline: 3px solid rgba(111, 194, 255, 0.8);
  outline-offset: 2px;
}

.auto-coin-plan:disabled {
  cursor: default;
}

.auto-coin-badge {
  position: absolute;
  top: -0.78rem;
  right: 0.14rem;
  z-index: 2;
  display: grid;
  place-items: center;
  min-width: 1.6rem;
  height: 1rem;
  padding-inline: 0.35rem;
  border-radius: 999px;
  background: #435b6d;
  color: #f0f7fb;
  font-size: 0.67rem;
  font-weight: 950;
  line-height: 1;
}

.auto-coin-face {
  position: absolute;
  display: block;
  width: 4.2rem;
  aspect-ratio: 1;
  border-radius: 50%;
  box-shadow: inset 0 -0.55rem 1rem rgba(0, 0, 0, 0.18);
}

.auto-coin-plan.heads .auto-coin-predicted,
.auto-coin-actual.heads {
  background:
    radial-gradient(circle at 50% 50%, #061b25 0 30%, transparent 31%),
    #ff9f1d;
}

.auto-coin-plan.tails .auto-coin-predicted,
.auto-coin-actual.tails {
  background: #5679ff;
}

.auto-coin-plan.tails .auto-coin-predicted::before,
.auto-coin-actual.tails::before {
  content: "";
  position: absolute;
  inset: 1.28rem;
  transform: rotate(45deg);
  border-radius: 0.08rem;
  background: #061b25;
}

.auto-coin-plan.revealed {
  border-width: 0.18rem;
}

.auto-coin-plan.revealed .auto-coin-predicted {
  top: 0.35rem;
  left: 0.35rem;
  width: 2.15rem;
  opacity: 0.72;
}

.auto-coin-plan.revealed .auto-coin-predicted::before {
  inset: 0.64rem;
}

.auto-coin-plan.revealed .auto-coin-actual {
  right: 0.08rem;
  bottom: 0.08rem;
  z-index: 1;
  width: 4rem;
}

.auto-coin-plan.hit {
  border-color: #16e06f;
}

.auto-coin-plan.miss {
  border-color: #ff2d59;
}

.auto-coin-plan.hit .auto-coin-badge {
  background: #16e06f;
  color: #03150b;
}

.auto-coin-plan.miss .auto-coin-badge {
  background: #ff2d59;
  color: #ffffff;
}

.auto-plan-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  width: min(42rem, calc(100% - 2rem));
  padding: 0.8rem;
  border-radius: 0.45rem;
  background: #173544;
}

.auto-plan-summary > div {
  display: grid;
  gap: 0.4rem;
}

.auto-plan-summary > div > strong {
  display: block;
  min-height: 2.5rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid #335368;
  border-radius: 0.35rem;
  background: #09202b;
  color: #f8fbff;
  font-size: 0.9rem;
}

.flip-history {
  display: grid;
  grid-template-columns: repeat(20, 1fr);
  gap: 0.32rem;
  width: min(34rem, calc(100% - 2rem));
  padding: 0.55rem;
  border-radius: 0.45rem;
  background: #0d2532;
}

.flip-history .slot {
  display: grid;
  place-items: center;
  min-width: 0;
  aspect-ratio: 1;
  border-radius: 0.22rem;
  background: #17313f;
  color: #9cb9c7;
  font-size: 0.65rem;
  font-weight: 900;
}

.flip-history .slot.heads {
  background: #f0a638;
  color: #1d1000;
}

.flip-history .slot.tails {
  background: #357ee6;
  color: #eaf4ff;
}

.flip-history .slot.miss {
  outline: 0.14rem solid #ff2d59;
}

.flip-body .recent-chip.heads {
  background: #f0a638;
  color: #1d1000;
}

.flip-body .recent-chip.tails {
  background: #357ee6;
  color: #eaf4ff;
}

.flip-body .recent-chip.loss {
  background: #344b5a;
  color: #f0f7fb;
}

@keyframes coin-flip {
  0% {
    transform: rotateY(0) scale(1);
  }
  48% {
    transform: rotateY(720deg) scale(1.07);
  }
  100% {
    transform: rotateY(1080deg) scale(1);
  }
}

@media (max-width: 780px) {
  .flip-stage {
    min-height: 25rem;
  }

  .coin {
    width: 8.5rem;
    height: 8.5rem;
  }

  .coin-face {
    font-size: 2.7rem;
  }

  .flip-history {
    gap: 0.22rem;
  }

  .flip-history .slot {
    font-size: 0.52rem;
  }

  .auto-plan-board {
    grid-template-columns: repeat(auto-fit, minmax(4rem, 4.7rem));
    gap: 1.35rem 0.75rem;
  }

  .auto-coin-plan {
    width: 4.7rem;
  }

  .auto-coin-face {
    width: 3.6rem;
  }

  .auto-coin-plan.revealed .auto-coin-actual {
    width: 3.45rem;
  }

  .auto-plan-summary {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .coin,
  .coin.flipping {
    animation: none;
    transition: none;
  }
}