@import url('https://unpkg.com/normalize.css') layer(normalize);
@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap');
@layer normalize, base, demo;

@layer demo {
  .title {
    --accent: #0285ff;
    font-family: 'Inter', sans-serif;
    font-size: 2.5rem;
    text-decoration: none;
    display: grid;
    grid-auto-flow: column;
    color: inherit;
    gap: 0.75rem;
    font-weight: 500;
    color: var(--accent);
  }

  .logo {
    pointer-events: none;
    height: 100%;
    aspect-ratio: 1;
    /* outline: blue dashed 2px; */
    position: relative;
    container-type: size;
  }

  .logo svg {
    position: absolute;
  }

  .track {
    display: inline-block;
    width: 500%;
    aspect-ratio: 1 / 1.5;
    border-radius: 50%;
    /* outline: 2px dashed red; */
    position: absolute;
    top: 50%;
    right: 50%;
    translate: 0 -50%;
  }

  .butterfly {
    display: inline-block;
    width: 100cqi;
    aspect-ratio: 1;
    position: relative;
    offset-path: border-box;
    offset-distance: 25%;
    offset-rotate: auto -90deg;
    /* animation: float 1s infinite linear; */
  }

  @-webkit-keyframes float {
    to {
      offset-distance: 0;
    }
  }

  @keyframes float {
    to {
      offset-distance: 0;
    }
  }

  .butterfly__wings {
    transform-style: preserve-3d;
    perspective: 50px;
    position: absolute;
    inset: 0;
  }

  .title:hover .butterfly__wings svg {
    -webkit-animation: flutter 0.1s 0.1s 4 alternate ease;
            animation: flutter 0.1s 0.1s 4 alternate ease;
  }

  .title:hover .butterfly__shadow svg {
    -webkit-animation: shade 0.1s 0.1s 4 alternate ease-in;
            animation: shade 0.1s 0.1s 4 alternate ease-in;
  }

  @-webkit-keyframes flutter {
    to {
      rotate: y var(--r, 45deg);
    }
  }

  @keyframes flutter {
    to {
      rotate: y var(--r, 45deg);
    }
  }

  @-webkit-keyframes shade {
    from {
      transform: skewY(0deg);
      scale: 1 1;
    }
    to {
      translate: var(--tx, 0) 0;
      transform: skewY(var(--skew, -20deg));
      scale: var(--scale-x, 0.65) var(--scale-y, 1.2);
    }
  }

  @keyframes shade {
    from {
      transform: skewY(0deg);
      scale: 1 1;
    }
    to {
      translate: var(--tx, 0) 0;
      transform: skewY(var(--skew, -20deg));
      scale: var(--scale-x, 0.65) var(--scale-y, 1.2);
    }
  }

  :where(.butterfly__wings, .butterfly__shadow) svg:first-of-type {
    -webkit-clip-path: inset(0 50% 0 0);
            clip-path: inset(0 50% 0 0);
  }

  :where(.butterfly__wings, .butterfly__shadow) svg:last-of-type {
    -webkit-clip-path: inset(0 0 0 50%);
            clip-path: inset(0 0 0 50%);
  }

  .butterfly__wings svg:first-of-type {
    --r: 75deg;
  }

  .butterfly__wings svg:last-of-type {
    --r: -75deg;
  }

  .butterfly__shadow svg:first-of-type {
    --skew: -20deg;
    --scale-x: 0.65;
    --scale-y: 1.2;
  }

  .butterfly__shadow svg:last-of-type {
    --skew: 20deg;
    --scale-x: 0.35;
    --scale-y: 1.2;
    --tx: -6%;
  }

  .butterfly__wings path {
    fill: var(--accent);
  }

  .butterfly__shadow path {
    fill: hsl(0 0% 10% / 0.25);
  }
}

@layer base {
  :root {
    --font-size-min: 16;
    --font-size-max: 20;
    --font-ratio-min: 1.2;
    --font-ratio-max: 1.33;
    --font-width-min: 375;
    --font-width-max: 1500;
  }

  html {
    color-scheme: light dark;
  }

  [data-theme='light'] {
    color-scheme: light only;
  }

  [data-theme='dark'] {
    color-scheme: dark only;
  }

  :where(.fluid) {
    --fluid-min: calc(
      var(--font-size-min) * pow(var(--font-ratio-min), var(--font-level, 0))
    );
    --fluid-max: calc(
      var(--font-size-max) * pow(var(--font-ratio-max), var(--font-level, 0))
    );
    --fluid-preferred: calc(
      (var(--fluid-max) - var(--fluid-min)) /
        (var(--font-width-max) - var(--font-width-min))
    );
    --fluid-type: clamp(
      (var(--fluid-min) / 16) * 1rem,
      ((var(--fluid-min) / 16) * 1rem) -
        (((var(--fluid-preferred) * var(--font-width-min)) / 16) * 1rem) +
        (var(--fluid-preferred) * var(--variable-unit, 100vi)),
      (var(--fluid-max) / 16) * 1rem
    );
    font-size: var(--fluid-type);
  }

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

  body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    font-family: 'SF Pro Text', 'SF Pro Icons', 'AOS Icons', 'Helvetica Neue',
      Helvetica, Arial, sans-serif, system-ui;
  }

  body::before {
    --size: 45px;
    --line: color-mix(in lch, canvasText, transparent 70%);
    content: '';
    height: 100vh;
    width: 100vw;
    position: fixed;
    background: linear-gradient(
          90deg,
          var(--line) 1px,
          transparent 1px var(--size)
        )
        50% 50% / var(--size) var(--size),
      linear-gradient(var(--line) 1px, transparent 1px var(--size)) 50% 50% /
        var(--size) var(--size);
    -webkit-mask: linear-gradient(-20deg, transparent 50%, white);
            mask: linear-gradient(-20deg, transparent 50%, white);
    top: 0;
    transform-style: flat;
    pointer-events: none;
    z-index: -1;
  }

  /* Utilities */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }
}