/**
 * Nico Before/After — .nico-ba-compare（推奨）
 * 互換: .kk-hayamizu-ba-compare / .ba-compare
 */

.nico-ba-compare,
.kk-hayamizu-ba-compare,
.nico-ba-compare *,
.kk-hayamizu-ba-compare *,
.nico-ba-compare *::before,
.kk-hayamizu-ba-compare *::before,
.nico-ba-compare *::after,
.kk-hayamizu-ba-compare *::after {
  box-sizing: border-box;
}

.nico-ba-compare,
.kk-hayamizu-ba-compare {
  position: relative;
  max-width: 980px;
  margin: 24px auto;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #f2f2f2;
  isolation: isolate;
}

.nico-ba-compare img,
.kk-hayamizu-ba-compare img {
  position: absolute;
  inset: 0;
  display: block;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
  vertical-align: top;
}

.nico-ba-compare__after,
.kk-hayamizu-ba-compare__after {
  clip-path: inset(0 0 0 50%);
}

.nico-ba-compare__handle,
.kk-hayamizu-ba-compare__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25);
  z-index: 2;
}

.nico-ba-compare__knob,
.kk-hayamizu-ba-compare__knob {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  z-index: 1;
  --nico-ba-plus: rgba(0, 0, 0, 0.75);
  background:
    linear-gradient(var(--nico-ba-plus), var(--nico-ba-plus)) center / 2px 18px no-repeat,
    linear-gradient(var(--nico-ba-plus), var(--nico-ba-plus)) center / 18px 2px no-repeat,
    #fff;
}

.nico-ba-compare__label,
.kk-hayamizu-ba-compare__label {
  position: absolute;
  z-index: 3;
  top: 10px;
  left: 10px;
  margin: 0 !important;
  padding: 0.35em 0.6em !important;
  border-radius: 6px;
  font-size: 12px !important;
  line-height: 1 !important;
  background: rgba(0, 0, 0, 0.55) !important;
  color: #fff !important;
  border: none !important;
}

.nico-ba-compare__label--after,
.kk-hayamizu-ba-compare__label--after {
  left: auto !important;
  right: 10px;
}

.nico-ba-compare input[type="range"],
.kk-hayamizu-ba-compare input[type="range"] {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  opacity: 0 !important;
  cursor: ew-resize;
  z-index: 4;
  appearance: none !important;
  -webkit-appearance: none !important;
  background: transparent !important;
  border: none !important;
}

/* スクロールヒント演出中のスムーズ移動 */
.nico-ba-compare.nico-ba-intro-running .nico-ba-compare__handle,
.kk-hayamizu-ba-compare.nico-ba-intro-running .kk-hayamizu-ba-compare__handle,
.ba-compare.nico-ba-intro-running .ba-compare__handle {
  transition: left 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.nico-ba-compare.nico-ba-intro-running .nico-ba-compare__after,
.kk-hayamizu-ba-compare.nico-ba-intro-running .kk-hayamizu-ba-compare__after,
.ba-compare.nico-ba-intro-running .ba-compare__after {
  transition: clip-path 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 480px) {
  .nico-ba-compare__knob,
  .kk-hayamizu-ba-compare__knob {
    background:
      linear-gradient(var(--nico-ba-plus), var(--nico-ba-plus)) center / 2px 20px no-repeat,
      linear-gradient(var(--nico-ba-plus), var(--nico-ba-plus)) center / 20px 2px no-repeat,
      #fff;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nico-ba-compare.nico-ba-intro-running .nico-ba-compare__handle,
  .kk-hayamizu-ba-compare.nico-ba-intro-running .kk-hayamizu-ba-compare__handle,
  .ba-compare.nico-ba-intro-running .ba-compare__handle,
  .nico-ba-compare.nico-ba-intro-running .nico-ba-compare__after,
  .kk-hayamizu-ba-compare.nico-ba-intro-running .kk-hayamizu-ba-compare__after,
  .ba-compare.nico-ba-intro-running .ba-compare__after {
    transition: none;
  }
}

/* ---------- .ba-compare 互換 ---------- */
.ba-compare {
  position: relative;
  max-width: 980px;
  margin: 24px auto;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #f2f2f2;
  isolation: isolate;
}

.ba-compare img {
  position: absolute;
  inset: 0;
  display: block;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
}

.ba-compare__after {
  clip-path: inset(0 0 0 50%);
}

.ba-compare__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25);
  z-index: 2;
}

.ba-compare__knob {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  z-index: 1;
  --ba-plus: rgba(0, 0, 0, 0.75);
  background:
    linear-gradient(var(--ba-plus), var(--ba-plus)) center / 2px 18px no-repeat,
    linear-gradient(var(--ba-plus), var(--ba-plus)) center / 18px 2px no-repeat,
    #fff;
}

.ba-compare__label {
  position: absolute;
  z-index: 3;
  top: 10px;
  left: 10px;
  margin: 0 !important;
  padding: 0.35em 0.6em !important;
  border-radius: 6px;
  font-size: 12px !important;
  line-height: 1 !important;
  background: rgba(0, 0, 0, 0.55) !important;
  color: #fff !important;
  border: none !important;
}

.ba-compare__label--after {
  left: auto !important;
  right: 10px;
}

.ba-compare input[type="range"] {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  opacity: 0 !important;
  cursor: ew-resize;
  z-index: 4;
  appearance: none !important;
  -webkit-appearance: none !important;
  background: transparent !important;
  border: none !important;
}

@media (max-width: 480px) {
  .ba-compare__knob {
    background:
      linear-gradient(var(--ba-plus), var(--ba-plus)) center / 2px 20px no-repeat,
      linear-gradient(var(--ba-plus), var(--ba-plus)) center / 20px 2px no-repeat,
      #fff;
  }
}