.image-compare {
  --split: 50%;
  --compare-handle-size: 44px;
  --compare-handle-edge: 22px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.image-compare > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

.image-compare > .image-compare__before {
  z-index: 1;
}

.image-compare > .image-compare__after {
  z-index: 2;
  clip-path: inset(0 0 0 var(--split));
  will-change: clip-path;
}

.image-compare__line {
  position: absolute;
  z-index: 4;
  top: 0;
  bottom: 0;
  left: clamp(var(--compare-handle-edge), var(--split), calc(100% - var(--compare-handle-edge)));
  width: 2px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 0 0 1px rgba(36, 29, 31, 0.08);
  transform: translateX(-1px);
  pointer-events: none;
}

.image-compare__handle {
  position: absolute;
  z-index: 5;
  box-sizing: border-box;
  top: 50%;
  left: clamp(var(--compare-handle-edge), var(--split), calc(100% - var(--compare-handle-edge)));
  display: grid;
  grid-template-columns: 1fr 1fr;
  place-items: center;
  width: var(--compare-handle-size);
  height: var(--compare-handle-size);
  padding: 0 7px;
  border: 1px solid rgba(47, 41, 43, 0.09);
  border-radius: 50%;
  background: #fff;
  color: #30292b;
  box-shadow: 0 8px 24px rgba(45, 34, 37, 0.2);
  transform: translate(-50%, -50%);
  pointer-events: auto;
  touch-action: none;
  cursor: grab;
}

.image-compare__handle:active {
  cursor: grabbing;
}

.image-compare__handle::before,
.image-compare__handle::after {
  font: 700 15px/1 "Noto Sans JP", sans-serif;
}

.image-compare__handle::before {
  content: "‹";
}

.image-compare__handle::after {
  content: "›";
}

.image-compare__label {
  position: absolute;
  z-index: 6;
  bottom: 20px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.93);
  color: #3b3436;
  font: 500 13px/1.2 "Noto Sans JP", sans-serif;
  box-shadow: 0 3px 14px rgba(47, 36, 39, 0.08);
  pointer-events: none;
  backdrop-filter: blur(8px);
}

.image-compare__label--before {
  left: 20px;
}

.image-compare__label--after {
  right: 20px;
}

.image-compare__range {
  position: absolute;
  z-index: 7;
  top: 50%;
  left: clamp(var(--compare-handle-edge), var(--split), calc(100% - var(--compare-handle-edge)));
  width: var(--compare-handle-size);
  height: var(--compare-handle-size);
  margin: 0;
  padding: 0;
  border: 0;
  transform: translate(-50%, -50%);
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  opacity: 0;
  cursor: grab;
  touch-action: none;
  pointer-events: none;
}

.image-compare__range:active {
  cursor: grabbing;
}

.image-compare__range::-webkit-slider-runnable-track {
  width: 100%;
  height: 100%;
  background: transparent;
}

.image-compare__range::-webkit-slider-thumb {
  width: var(--compare-handle-size);
  height: var(--compare-handle-size);
  border: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
}

.image-compare__range::-moz-range-track {
  width: 100%;
  height: 100%;
  background: transparent;
}

.image-compare__range::-moz-range-thumb {
  width: var(--compare-handle-size);
  height: var(--compare-handle-size);
  border: 0;
  background: transparent;
}

.image-compare:focus-within {
  outline: 3px solid #8f2038;
  outline-offset: 3px;
}

@media (max-width: 800px) {
  .image-compare__handle {
    padding: 0 6px;
  }

  .image-compare__handle::before,
  .image-compare__handle::after {
    font-size: 14px;
  }

  .image-compare__label {
    bottom: 14px;
    padding: 7px 12px;
    font-size: 11px;
  }

  .image-compare__label--before {
    left: 14px;
  }

  .image-compare__label--after {
    right: 14px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .image-compare__handle,
  .image-compare__line {
    transition: left 80ms linear;
  }
}