:root {
  --bg-closed: hsl(220 12% 8%);
  --fg-closed: hsl(220 10% 96%);
  --bg-open: hsl(0 0% 98%);
  --fg-open: hsl(220 10% 12%);
  --eye-accent: #5326c1;
  --ease-eye: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur-bg: 520ms;
  --dur-eye: 220ms;
  --dur-caption: 360ms;
  /* один размер глаза в обеих темах (высота — как ты задал) */
  --eye-size: clamp(9rem, 24vw, 13rem);
  --eye-height: calc(var(--eye-size) * 1.8 / 3);
  --logo-width: clamp(11rem, 30vw, 16rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  min-height: 100%;
  min-height: 100dvh;
  background-color: var(--bg-closed);
  color: var(--fg-closed);
  font-family: Helvetica, "Helvetica Neue", Arial, sans-serif;
  transition: background-color var(--dur-bg) var(--ease-eye),
    color var(--dur-bg) var(--ease-eye);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[data-theme="open"] body {
  background-color: var(--bg-open);
  color: var(--fg-open);
}

.stage {
  min-height: 100%;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

/* В потоке только глаз — якорь центра; лого абсолютно */
.compose {
  position: relative;
  width: var(--eye-size);
  height: var(--eye-height);
}

.mark {
  position: relative;
  width: 100%;
  height: 100%;
}

.logo {
  position: absolute;
  left: 50%;
  bottom: 90px;
  width: var(--logo-width);
  height: auto;
  display: block;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-52%) rotate(0deg) scale(0.98);
  transform-origin: center bottom;
  transition:
    opacity var(--dur-caption) var(--ease-eye),
    transform var(--dur-caption) var(--ease-eye),
    visibility 0s linear var(--dur-caption);
}

.eye-btn {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  border-radius: 0.75rem;
  line-height: 0;
  color: inherit;
  position: relative;
  z-index: 1;
  display: block;
  transition: transform var(--dur-eye) var(--ease-eye);
}

.eye-btn:focus-visible {
  outline: 2px solid var(--eye-accent);
  outline-offset: 4px;
}

.eye-btn:active {
  transform: scale(0.97);
}

.eye-stack {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}

.eye {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  pointer-events: none;
  transition:
    opacity var(--dur-eye) var(--ease-eye),
    transform var(--dur-eye) var(--ease-eye),
    filter var(--dur-eye) var(--ease-eye);
}

.eye-closed {
  opacity: 1;
  transform: scale(1);
}

.eye-open {
  overflow: visible;
  opacity: 0;
  transform: scale(0.94);
}

html[data-theme="open"] .eye-closed {
  opacity: 0;
  transform: scale(0.94);
}

html[data-theme="open"] .eye-open {
  opacity: 1;
  transform: scale(1);
}

html[data-blinking="true"] .eye-closed,
html[data-blinking="true"] .eye-open {
  transform: scaleY(0.22) scaleX(1.06);
  filter: brightness(1.05);
}

html[data-theme="open"] .logo {
  opacity: 1;
  visibility: visible;
  pointer-events: none;
  transform: translateX(-52%) rotate(0deg) scale(1);
  transition:
    opacity var(--dur-caption) var(--ease-eye),
    transform var(--dur-caption) var(--ease-eye),
    visibility 0s linear 0s;
}

@media (max-width: 640px) {
  :root {
    --eye-size: clamp(8rem, 48vw, 11rem);
    --logo-width: clamp(10rem, 70vw, 15rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  body,
  .eye,
  .logo,
  .eye-btn {
    transition: none !important;
  }

  html[data-blinking="true"] .eye-closed,
  html[data-blinking="true"] .eye-open {
    transform: none;
    filter: none;
  }
}