/* Тонкий неон по краю + единый leave/enter (keyframes, без same-frame transition) */

.edge-neon {
  --edge-tone: #3ecfbe;
  position: fixed;
  top: 14%;
  bottom: 14%;
  width: 10px;
  z-index: 60;
  border: 0;
  padding: 0;
  margin: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  text-decoration: none;
  color: var(--text, #e8f2f8);
  cursor: pointer;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--edge-tone) 75%, #fff) 50%,
    transparent 100%
  );
  box-shadow: 0 0 14px color-mix(in srgb, var(--edge-tone) 40%, transparent);
  transition:
    width 240ms cubic-bezier(0.22, 0.72, 0.12, 1),
    box-shadow 240ms ease,
    background 240ms ease;
  -webkit-tap-highlight-color: transparent;
}

.edge-neon-left {
  left: 0;
  border-radius: 0 8px 8px 0;
}

.edge-neon-right {
  right: 0;
  border-radius: 8px 0 0 8px;
}

body.shop-page .edge-neon {
  --edge-tone: #d4a24a;
}

body.guide-page .edge-neon {
  --edge-tone: #3ecfbe;
}

.edge-neon-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background: linear-gradient(
    180deg,
    transparent,
    color-mix(in srgb, var(--edge-tone) 50%, transparent),
    transparent
  );
}

.edge-neon-label {
  position: relative;
  z-index: 1;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: "Rajdhani", system-ui, sans-serif;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  color: color-mix(in srgb, var(--edge-tone) 85%, #fff);
  text-shadow: 0 0 10px color-mix(in srgb, var(--edge-tone) 45%, transparent);
  transition: opacity 200ms ease;
}

.edge-neon-right .edge-neon-label {
  transform: none;
}

.edge-neon:hover,
.edge-neon:focus-visible {
  width: 48px;
  outline: none;
  box-shadow: 0 0 22px color-mix(in srgb, var(--edge-tone) 50%, transparent);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--edge-tone) 15%, #0a1018),
    color-mix(in srgb, var(--edge-tone) 55%, #0a1018),
    color-mix(in srgb, var(--edge-tone) 15%, #0a1018)
  );
}

.edge-neon:hover .edge-neon-label,
.edge-neon:focus-visible .edge-neon-label {
  opacity: 1;
}

html.edge-swap-out,
html.edge-swap-in {
  background: #05070a;
}

html.edge-swap-out body,
html.edge-swap-in body {
  pointer-events: none;
  will-change: transform, opacity;
}

/* уход — keyframes (не transition: иначе класс+цель в одном кадре = мгновенный прыжок) */
html.edge-swap-out-left body {
  animation: edge-swap-leave-left 420ms cubic-bezier(0.22, 0.72, 0.12, 1) both;
}

html.edge-swap-out-right body {
  animation: edge-swap-leave-right 420ms cubic-bezier(0.22, 0.72, 0.12, 1) both;
}

html.edge-swap-out-fade body {
  animation: edge-swap-leave-fade 320ms cubic-bezier(0.22, 0.72, 0.12, 1) both;
}

html.edge-swap-in-left body {
  --edge-enter-x: -5%;
  animation: edge-swap-enter 460ms cubic-bezier(0.22, 0.72, 0.12, 1) both;
}

html.edge-swap-in-right body {
  --edge-enter-x: 5%;
  animation: edge-swap-enter 460ms cubic-bezier(0.22, 0.72, 0.12, 1) both;
}

html.edge-swap-in-fade body {
  animation: edge-swap-enter-fade 420ms cubic-bezier(0.22, 0.72, 0.12, 1) both;
}

@keyframes edge-swap-leave-left {
  from {
    transform: none;
    opacity: 1;
  }
  to {
    transform: translateX(6%);
    opacity: 0;
  }
}

@keyframes edge-swap-leave-right {
  from {
    transform: none;
    opacity: 1;
  }
  to {
    transform: translateX(-6%);
    opacity: 0;
  }
}

@keyframes edge-swap-leave-fade {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.985);
  }
}

@keyframes edge-swap-enter {
  from {
    transform: translateX(var(--edge-enter-x, 5%));
    opacity: 0;
  }
  to {
    transform: none;
    opacity: 1;
  }
}

@keyframes edge-swap-enter-fade {
  from {
    opacity: 0;
    transform: scale(0.99);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

body.menu-open .edge-neon {
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 720px) {
  .edge-neon {
    width: 8px;
    top: 18%;
    bottom: 18%;
  }
  .edge-neon:hover,
  .edge-neon:focus-visible {
    width: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .edge-neon,
  html.edge-swap-out body,
  html.edge-swap-in body {
    transition: none !important;
    animation: none !important;
  }
  .edge-neon-label {
    opacity: 1;
  }
}