/* ============================================================
   Cards — WebP faces, absolute-positioned player fan
   ============================================================ */

:root {
  --card-w-pile: 62px;
  --card-h-pile: calc(var(--card-w-pile) * 1.38);
  --card-w-hand: 110px;
  --card-h-hand: calc(var(--card-w-hand) * 1.38);
  --card-w-mini: 42px;
  --card-h-mini: calc(var(--card-w-mini) * 1.38);
  --fan-step: 50px;
  --radius-card: 6px;
}

.game-stage {
  --card-w-pile: 6.8cqi;
  --card-h-pile: calc(var(--card-w-pile) * 1.38);
  --card-w-hand: 5.1cqi;
  --card-h-hand: calc(var(--card-w-hand) * 1.38);
  --card-w-mini: 2.75cqi;
  --card-h-mini: calc(var(--card-w-mini) * 1.38);
  --fan-step: calc(var(--card-w-hand) * 0.38);
}

.card {
  position: relative;
  width: var(--card-w-pile);
  height: var(--card-h-pile);
  perspective: 900px;
  flex-shrink: 0;
  transition: transform 0.2s var(--ease-out-soft), filter 0.15s;
  touch-action: manipulation;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s var(--ease-out-soft);
  transform: rotateY(180deg);
}
.card-inner.is-face-up { transform: rotateY(0deg); }

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  backface-visibility: hidden;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.card-front {
  background: url('../assets/card-front.webp') center/cover no-repeat;
  padding: 6%;
  overflow: hidden;
}

.card-back {
  background: url('../assets/card-back.webp') center/cover no-repeat;
  transform: rotateY(180deg);
}

.card-front.suit-ink { color: #111; }
.card-front.suit-ruby { color: #b71c1c; }

.corner {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
  font-family: var(--font-display);
  font-weight: 700;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}
.corner .r { font-size: 1.1cqi; }
.corner .s { font-size: 0.95cqi; margin-top: 1px; }
.corner-tl { top: 5%; left: 6%; }
.corner-br { bottom: 5%; right: 6%; transform: rotate(180deg); }

.card-watermark {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5cqi;
  opacity: 0.05;
}

.card-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.center-rank {
  font-family: var(--font-display);
  font-size: 2.2cqi;
  font-weight: 700;
  line-height: 1;
}
.center-suit { font-size: 1.7cqi; line-height: 1; }

/* ---- Player hand: absolute horizontal fan ---- */
.player-hand .card--hand {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: var(--card-w-hand);
  height: var(--card-h-hand);
  margin: 0;
  transform:
    translate3d(calc(-50% + var(--fan-x, 0px) + var(--preview-shift, 0px)), var(--fan-y, 0px), 0)
    rotate(var(--fan-deg, 0deg));
  transform-origin: center bottom;
  will-change: transform;
}

.card--hand .corner .r { font-size: 1.5cqi; }
.card--hand .corner .s { font-size: 1.25cqi; }
.card--hand .center-rank { font-size: 2.8cqi; }
.card--hand .center-suit { font-size: 2.1cqi; }

/* ---- AI mini hand ---- */
.hand {
  display: flex;
  flex-direction: row;
  align-items: flex-end;
  justify-content: center;
}

.ai-hand .card {
  position: relative;
  width: var(--card-w-mini);
  height: var(--card-h-mini);
  margin: 0 calc(var(--card-w-mini) * -0.42);
  transform: rotate(var(--fan-deg, 0deg));
  transform-origin: center bottom;
}
.ai-hand .card:first-child { margin-left: 0; }
.ai-hand .card:last-child { margin-right: 0; }

.card--back .card-inner { transform: rotateY(180deg); transition: none; }

/* Interaction */
.card.is-interactive { cursor: grab; touch-action: none; }

@media (hover: hover) and (pointer: fine) {
  .player-hand .card--hand.is-interactive.is-pointer-hover {
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px) + var(--preview-shift, 0px)), calc(var(--fan-y, 0px) - 14px), 0)
      rotate(var(--fan-deg, 0deg));
    filter: brightness(1.04) drop-shadow(0 14px 20px rgba(255, 215, 64, 0.34));
  }
}

.player-hand .card--hand.is-selected {
  transform:
    translate3d(calc(-50% + var(--fan-x, 0px) + var(--preview-shift, 0px)), calc(var(--fan-y, 0px) - 16px), 0)
    rotate(var(--fan-deg, 0deg));
  filter: drop-shadow(0 14px 22px rgba(255, 215, 64, 0.35));
}

@media (hover: none), (pointer: coarse) {
  .player-hand .card--hand.is-selected:not(.is-dragging) {
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px) + var(--preview-shift, 0px)), calc(var(--fan-y, 0px) - 12px), 0)
      rotate(var(--fan-deg, 0deg));
    filter: drop-shadow(0 10px 16px rgba(255, 215, 64, 0.32));
  }
}

.card.is-dragging {
  transition: none !important;
  cursor: grabbing;
  z-index: 999 !important;
  will-change: transform;
  filter: drop-shadow(0 18px 28px rgba(0, 0, 0, 0.55));
  transform:
    translate3d(
      calc(-50% + var(--fan-x, 0px) + var(--drag-x, 0px)),
      calc(var(--fan-y, 0px) + var(--drag-y, 0px)),
      0
    )
    rotate(var(--fan-deg, 0deg))
    scale(1.06) !important;
}

.player-hand.has-insertion-preview .card--hand:not(.is-dragging) {
  transition-duration: 170ms;
}

.card.is-meld .card-front {
  box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.85), 0 8px 18px rgba(0, 0, 0, 0.4);
}
.card.is-deadwood .card-front { filter: saturate(0.85) brightness(0.95); }

/* Stock pile */
.stock .stock-layer {
  position: absolute;
  inset: 0;
  margin: 0;
  transform: translate(calc(var(--i) * -1px), calc(var(--i) * -2px));
}
.stock .stock-layer .card-inner { transform: rotateY(180deg); transition: none; }
.stock.is-actionable:hover .stock-layer:last-child { transform: translate(0, -4px); }
.stock { cursor: default; }
.stock.is-empty { opacity: 0.25; pointer-events: none; }
.stock .pile-count { display: none; }

/* Discard pile */
.discard { cursor: default; }
.discard .discard-layer {
  position: absolute;
  inset: 0;
  margin: 0;
  transform: translate(calc(var(--i) * 2px), calc(var(--i) * -2px)) rotate(calc(var(--i) * -3deg));
}
.discard.is-empty::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px dashed rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-card);
}
.discard.is-drop-target::before {
  content: '';
  position: absolute;
  inset: -10px;
  border-radius: 12px;
  border: 2px dashed rgba(255, 215, 64, 0.6);
  animation: pulseRing 1.1s ease-in-out infinite;
}

/* Hand card animations preserve fan transform */
.card--hand.card-enter {
  animation: cardEnterHand 0.28s var(--ease-spring) both;
}

.game-stage.is-dealing .ai-hand .card-enter {
  animation-delay: calc(var(--deal-index, 0) * 54ms);
}

.game-stage.is-dealing .card--hand.card-enter {
  animation-name: cardEnterHandFromPile;
  animation-duration: 0.3s;
  animation-delay: calc(var(--deal-index, 0) * 54ms + 27ms);
}

.card--hand.card-enter-from-pile:not(.is-dragging) {
  animation-name: cardEnterHandFromPile;
  animation-duration: 0.34s;
}

@keyframes cardEnterHandFromPile {
  0% {
    opacity: 0;
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px) + var(--entry-x, 0px)), calc(var(--fan-y, 0px) + var(--entry-y, -36px)), 0)
      rotate(calc(var(--fan-deg, 0deg) - 8deg))
      scale(0.48);
  }
  72% { opacity: 1; }
  100% {
    opacity: 1;
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px)), var(--fan-y, 0px), 0)
      rotate(var(--fan-deg, 0deg))
      scale(1);
  }
}

@keyframes cardEnterHand {
  0% {
    opacity: 0;
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px)), calc(var(--fan-y, 0px) - 36px), 0)
      rotate(var(--fan-deg, 0deg))
      scale(0.86);
  }
  100% {
    opacity: 1;
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px)), var(--fan-y, 0px), 0)
      rotate(var(--fan-deg, 0deg))
      scale(1);
  }
}

.card--hand.card-exit {
  animation: cardExitHand 0.2s var(--ease-out-soft) both;
}

@keyframes cardExitHand {
  0% {
    opacity: 1;
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px)), var(--fan-y, 0px), 0)
      rotate(var(--fan-deg, 0deg));
  }
  100% {
    opacity: 0;
    transform:
      translate3d(calc(-50% + var(--fan-x, 0px)), calc(var(--fan-y, 0px) + 24px), 0)
      rotate(var(--fan-deg, 0deg))
      scale(0.78);
  }
}

.card-enter:not(.card--hand) { animation: cardEnter 0.48s var(--ease-spring) both; }
.card-exit:not(.card--hand) { animation: cardExit 0.24s var(--ease-out-soft) both; }