.letters-root {
  min-height: calc(100vh - 140px);
  padding: 56px 16px 96px;
  background: radial-gradient(
    120% 120% at 50% 20%,
    #ffffff 0%,
    #f8f4ea 55%,
    #ece5d4 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 48px;
}

.letters-intro {
  text-align: center;
  color: #3f3623;
  margin-bottom: 32px;
}

.letters-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
}

.letters-tagline {
  font-size: 1.1rem;
  margin: 0 auto;
  max-width: 520px;
  line-height: 1.6;
  color: rgba(63, 54, 35, 0.78);
}

.letters-stage {
  display: flex;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 32px;
  perspective: 1200px;
  margin: 0 auto 32px;
  width: min(720px, 100%);
  position: relative;
  z-index: 101;
}

.letters-tile {
  position: relative;
  width: clamp(220px, 40vw, 320px);
  aspect-ratio: 1 / 1;
  border: none;
  padding: 0;
  background: linear-gradient(160deg, #fcf9ee 0%, #f2e7ca 40%, #fdeed5 100%);
  border-radius: 24px;
  border-right: rgb(179, 158, 105) 6px solid;
  border-bottom: rgb(179, 158, 105) 6px solid;
  cursor: pointer;
  transform-style: preserve-3d;
  /* transition: transform 0.1s ease, box-shadow 0.1s ease; */
  font: inherit;
  color: inherit;
  outline: none;
}

/* Empty tile styling */
.letters-tile--empty {
  background: linear-gradient(160deg, #f4f4f4 0%, #e4e4e4 50%, #d6d6d6 100%);
  border-right: 6px solid #c7c7c7;
  border-bottom: 6px solid #c7c7c7;
  color: #7a7a7a;
  box-shadow: 0 12px 18px rgba(120, 120, 120, 0.18);
  position: relative;
}

.letters-tile--empty .letters-tile__face,
.letters-tile--empty .letters-tile__gloss,
.letters-tile--empty .letters-tile__base {
  display: none;
}

.letters-tile--drop-target::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 20px;
  border: 2px dashed rgba(100, 100, 100, 0.6);
  pointer-events: none;
}

.letters-tile:focus,
.letters-tile:focus-visible {
  outline: none;
}

.letters-tile--active {
  box-shadow: 0px 10px 14px 6px rgba(200, 200, 200, 0.75);
}

.letters-tile--empty.letters-tile--active {
  box-shadow: 0px 10px 16px rgba(120, 120, 120, 0.22);
}

.letters-tile--dragging {
  cursor: grabbing;
}

.letters-tile__face {
  position: absolute;
  inset: 8%;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(150deg, #fffef9 0%, #faf2dc 80%, #f4dcc1 100%);
  box-shadow:
    inset 0 0 0 2px rgba(133, 112, 74, 0.2),
    inset 0 12px 20px rgba(255, 255, 255, 0.85),
    inset 0 -12px 24px rgba(179, 149, 95, 0.35);
  transform: translateZ(26px);
  font-size: clamp(5rem, 16vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  color: #483821;
  /* text-shadow: 0 18px 22px rgba(32, 24, 11, 0.25); */
}

.letters-tile__character {
  font-size: inherit;
  line-height: 1;
}

.letters-tile__value {
  display: none;
}

.letters-tile__gloss {
  position: absolute;
  inset: 10% 12% 55% 12%;
  border-radius: 18px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.85) 0%,
    rgba(255, 255, 255, 0) 100%
  );
  mix-blend-mode: screen;
  pointer-events: none;
  transform: translateZ(30px);
}

.letters-tile__base {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  background: linear-gradient(180deg, #c9b891 0%, #a89263 100%);
  transform: translateZ(-18px);
  filter: blur(0.3px);
  pointer-events: none;
  opacity: 0.9;
}

.letters-tile--flipping {
  animation: lettersTileFlip 0.65s cubic-bezier(0.22, 0.68, 0.16, 0.98);
}

.letters-tile--pulse {
  animation: lettersTilePulse 0.5s ease;
}

@keyframes lettersTileFlip {
  0% {
    transform: rotateY(0deg);
  }
  50% {
    transform: rotateY(90deg);
  }
  100% {
    transform: rotateY(0deg);
  }
}

@keyframes lettersTilePulse {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.letters-controls {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.letters-button {
  padding: 12px 32px;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: linear-gradient(130deg, #f9e4b8 0%, #e6c890 100%);
  color: #3f3623;
  box-shadow: 0 12px 20px rgba(74, 60, 34, 0.2);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
  cursor: pointer;
}

.letters-button:hover,
.letters-button:focus {
  outline: none;
  transform: translateY(-2px);
  box-shadow: 0 16px 24px rgba(74, 60, 34, 0.24);
}

.letters-button:active {
  transform: translateY(1px);
  box-shadow: 0 8px 16px rgba(74, 60, 34, 0.2);
}

.letters-hint {
  font-size: 0.95rem;
  color: rgba(63, 54, 35, 0.7);
  margin: 0;
}

@media (max-width: 768px) {
  .letters-root {
    padding-top: 40px;
    padding-bottom: 72px;
  }

  .letters-stage {
    width: clamp(200px, 70vw, 260px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .letters-tile,
  .letters-tile--flipping,
  .letters-tile--pulse,
  .letters-button {
    transition: none;
    animation: none !important;
  }
}