.entrance-puzzle {
  position: fixed;
  inset: 0;
  z-index: 420;
  display: grid;
  place-items: center;
  background: rgba(4, 8, 16, 0.72);
  backdrop-filter: blur(6px);
  touch-action: none;
  transition: opacity 0.32s ease, background 0.32s ease;
}

.entrance-puzzle[hidden] {
  display: none;
}

.entrance-puzzle.is-resolving {
  pointer-events: none;
}

.entrance-puzzle.is-fading {
  opacity: 0;
  background: rgba(255, 255, 255, 0.55);
}

.entrance-puzzle__panel {
  width: min(920px, calc(100vw - 28px));
  max-height: calc(100vh - 28px);
  overflow: auto;
  padding: 18px 18px 14px;
  border-radius: 16px;
  border: 1px solid var(--panel-border);
  background: linear-gradient(165deg, rgba(14, 22, 40, 0.97), rgba(8, 12, 22, 0.96));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  transition: opacity 0.28s ease, transform 0.28s ease, filter 0.28s ease;
}

.entrance-puzzle.is-resolving .entrance-puzzle__panel {
  filter: saturate(1.15);
}

.entrance-puzzle.is-fading .entrance-puzzle__panel {
  opacity: 0;
  transform: scale(1.04);
  filter: brightness(2.4);
}

.entrance-puzzle__title {
  margin: 0 0 6px;
  font-family: Syne, "Segoe UI", sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: #f8fafc;
}

.entrance-puzzle__hint {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--text-dim);
}

.entrance-puzzle.is-resolving .entrance-puzzle__hint {
  color: #fef9c3;
}

.entrance-puzzle__layout {
  display: grid;
  grid-template-columns: minmax(140px, 220px) minmax(220px, 1fr);
  gap: 16px;
  align-items: start;
}

.entrance-puzzle__preview {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(56, 189, 248, 0.22);
  background: #0a121c;
  image-rendering: pixelated;
  transition: opacity 0.35s ease, filter 0.35s ease;
}

.entrance-puzzle.is-resolving .entrance-puzzle__preview {
  opacity: 0.35;
  filter: blur(1px) brightness(1.4);
}

.entrance-puzzle__board {
  --puzzle-size: 4;
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--puzzle-size), 1fr);
  gap: 4px;
  aspect-ratio: 1;
  width: 100%;
  max-width: min(64vh, 560px);
  touch-action: none;
  user-select: none;
  transform-origin: center;
}

.entrance-puzzle__board.is-charging {
  animation:
    entrance-puzzle-board-shake 1.2s ease-in forwards,
    entrance-puzzle-board-glow 1.2s ease-in forwards;
}

.entrance-puzzle__board.is-charging::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 8px;
  pointer-events: none;
  background: rgba(255, 255, 255, 0);
  mix-blend-mode: screen;
  animation: entrance-puzzle-board-whiteout 1.2s ease-in forwards;
}

.entrance-puzzle__board.is-whiteout::after {
  background: rgba(255, 255, 255, 1);
}

.entrance-puzzle__slot {
  position: relative;
  padding: 0;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 6px;
  overflow: hidden;
  background: #0b1220;
  cursor: grab;
}

.entrance-puzzle.is-resolving .entrance-puzzle__slot {
  cursor: default;
  border-color: rgba(255, 255, 255, 0.45);
}

.entrance-puzzle__slot:focus-visible {
  outline: 2px solid #38bdf8;
  outline-offset: 1px;
}

.entrance-puzzle__piece {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  pointer-events: none;
  image-rendering: pixelated;
  background-color: #0b1220;
  background-repeat: no-repeat;
  overflow: hidden;
}

.entrance-puzzle__piece.is-dragging {
  opacity: 0.35;
}

.entrance-puzzle__ghost {
  position: fixed;
  z-index: 430;
  margin: 0;
  transform: translate(-50%, -50%);
  border-radius: 8px;
  pointer-events: none;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  image-rendering: pixelated;
  /* Não herdar height/min-height % da peça (no body vira viewport). */
  min-width: 0 !important;
  min-height: 0 !important;
  max-width: none;
  max-height: none;
  overflow: hidden;
  background-repeat: no-repeat;
  background-color: #0b1220;
  box-sizing: border-box;
  flex: none;
}

.entrance-puzzle__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 14px;
}

.entrance-puzzle__cancel {
  border: 0;
  border-radius: 10px;
  padding: 8px 14px;
  background: rgba(148, 163, 184, 0.16);
  color: #e2e8f0;
  font-weight: 700;
  cursor: pointer;
}

.entrance-puzzle__cancel:hover {
  background: rgba(148, 163, 184, 0.28);
}

.entrance-quake {
  position: fixed;
  inset: 0;
  z-index: 410;
  pointer-events: none;
  opacity: 0;
  background:
    radial-gradient(ellipse at center, rgba(255, 248, 230, 0.08), transparent 55%),
    radial-gradient(ellipse at center, transparent 35%, rgba(20, 14, 10, 0.42) 100%);
  mix-blend-mode: multiply;
  transition: opacity 0.08s linear;
}

.entrance-quake[hidden] {
  display: none;
}

.entrance-quake.is-active {
  display: block;
  animation: entrance-quake-flicker 0.12s steps(2) infinite;
}

@keyframes entrance-puzzle-board-shake {
  0% {
    transform: translate(0, 0) scale(1);
  }
  18% {
    transform: translate(-2px, 1px) scale(1.01);
  }
  36% {
    transform: translate(3px, -2px) scale(1.02);
  }
  54% {
    transform: translate(-4px, 3px) scale(1.03);
  }
  72% {
    transform: translate(5px, -4px) scale(1.045);
  }
  88% {
    transform: translate(-6px, 5px) scale(1.06);
  }
  100% {
    transform: translate(0, 0) scale(1.08);
  }
}

@keyframes entrance-puzzle-board-glow {
  0% {
    filter: brightness(1) saturate(1);
    box-shadow: 0 0 8px rgba(250, 250, 255, 0.15);
  }
  55% {
    filter: brightness(1.55) saturate(1.25);
    box-shadow:
      0 0 18px rgba(250, 250, 255, 0.45),
      0 0 36px rgba(125, 211, 252, 0.35);
  }
  100% {
    filter: brightness(2.4) saturate(0.4);
    box-shadow:
      0 0 28px rgba(255, 255, 255, 0.9),
      0 0 54px rgba(255, 255, 255, 0.65);
  }
}

@keyframes entrance-puzzle-board-whiteout {
  0% {
    background: rgba(255, 255, 255, 0);
  }
  55% {
    background: rgba(255, 255, 255, 0.2);
  }
  78% {
    background: rgba(255, 255, 255, 0.55);
  }
  100% {
    background: rgba(255, 255, 255, 1);
  }
}

@keyframes entrance-quake-flicker {
  0% {
    opacity: var(--quake-opacity, 0.35);
  }
  100% {
    opacity: calc(var(--quake-opacity, 0.35) * 0.78);
  }
}

@media (max-width: 720px) {
  .entrance-puzzle__layout {
    grid-template-columns: 1fr;
  }

  .entrance-puzzle__preview {
    max-width: 180px;
  }
}