.split-action.available {
  border-color: var(--gold);
  color: var(--gold2);
  box-shadow: inset 0 0 20px rgba(214, 184, 117, .08);
}

/* Klasik iskambil destesi arka yüzü. Kapalıyken ön yüzdeki değerler gizlenir. */
.card.face-down .card-face {
  visibility: hidden;
}

.card-back {
  overflow: hidden;
  background-color: #f2ead6;
  background-image:
    linear-gradient(45deg, #8e292b 25%, transparent 25%, transparent 75%, #8e292b 75%),
    linear-gradient(-45deg, #173b48 25%, transparent 25%, transparent 75%, #173b48 75%),
    linear-gradient(45deg, transparent 44%, #c5a868 44%, #c5a868 56%, transparent 56%);
  background-position: 0 0, 7px 7px, 0 0;
  background-size: 14px 14px;
  border: 4px solid #eee2c5;
  box-shadow: 0 7px 18px rgba(0, 0, 0, .42), inset 0 0 0 2px #173b48;
}

.card-back::before {
  content: "";
  position: absolute;
  inset: 8px;
  z-index: 1;
  border: 2px solid #f2ead6;
  outline: 1px solid #8e292b;
  background: repeating-conic-gradient(from 45deg, rgba(142, 41, 43, .16) 0 25%, rgba(23, 59, 72, .16) 0 50%) 50% / 12px 12px;
}

.card-back::after {
  inset: 12px;
  z-index: 2;
  border: 1px solid rgba(242, 234, 214, .9);
}

.card-back span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  z-index: 3;
  border: 1px solid #f2ead6;
  border-radius: 50%;
  background: #173b48;
  color: #f2ead6;
  font: 500 12px Georgia, serif;
  box-shadow: 0 0 0 3px #8e292b;
}

.cards.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
  padding-top: 0;
}

.split-hand {
  min-width: 0;
  padding: 5px 8px 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  transition: border-color .25s, background .25s, box-shadow .25s;
}

.split-hand.active {
  border-color: rgba(214, 184, 117, .65);
  background: rgba(214, 184, 117, .06);
  box-shadow: 0 0 24px rgba(214, 184, 117, .08);
}

.split-label {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font: 500 8px "DM Mono";
  letter-spacing: 1.4px;
  text-align: center;
}

.split-hand.active .split-label { color: var(--gold2); }
.split-cards { display: flex; justify-content: center; }
.split-layout .card { width: 67px; height: 98px; margin-left: -21px; }
.split-layout .card:first-child { margin-left: 0; }
.split-layout .card-corner { font-size: 11px; }
.split-layout .card-suit { font-size: 27px; }

@media (max-width: 1100px) {
  .play-buttons { gap: 5px; }
  .game-action { min-width: 98px; padding: 0 9px; font-size: 9px; }
}

@media (max-width: 820px) {
  .cards.split-layout { gap: 8px; }
  .split-hand { padding-inline: 3px; }
  .split-layout .card { width: 59px; height: 87px; margin-left: -23px; }
  .split-layout .card-corner { font-size: 10px; }
  .split-layout .card-suit { font-size: 24px; }
}

@media (max-width: 430px) {
  .play-buttons { flex-wrap: wrap; }
  .game-action { flex: 1 1 22%; height: 54px; }
  .split-layout .card { width: 51px; height: 76px; margin-left: -23px; }
  .split-layout .card-corner { font-size: 8px; }
  .split-layout .card-suit { font-size: 20px; }
}