:root {
  color-scheme: light;
  --ink: #000000;
  --paper: #ffffff;
  --serif: "Times New Roman", Times, serif;
  --mono: "SFMono-Regular", "Cascadia Mono", "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  background: var(--paper);
}

body {
  color: var(--ink);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

main {
  position: relative;
  display: grid;
  min-height: 100svh;
  padding: clamp(1.25rem, 3vw, 3.25rem);
  place-items: center;
}

.date-time {
  display: grid;
  gap: clamp(0.45rem, 1.2vw, 0.75rem);
  justify-items: center;
  font-family: var(--serif);
  font-style: normal;
  font-weight: 400;
  text-align: center;
  white-space: nowrap;
}

#date {
  font-size: clamp(0.75rem, 1.2vw, 0.875rem);
  font-style: italic;
  line-height: 1;
}

#time {
  font-size: clamp(3.25rem, 9vw, 7rem);
  font-variant-numeric: lining-nums tabular-nums;
  letter-spacing: -0.055em;
  line-height: 0.82;
}

.smiley {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  font-family: Helvetica, sans-serif;
  font-size: 1.4rem;
  font-style: normal;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 1;
}

.smiley.is-following {
  top: 0;
  right: auto;
  left: 0;
}

@media (pointer: fine) {
  .cursor-ready,
  .cursor-ready * {
    cursor: none;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .date-time {
    opacity: 0;
    animation: appear 900ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  .smiley.is-following {
    will-change: transform;
  }

  @keyframes appear {
    from {
      opacity: 0;
      transform: translateY(0.5rem);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}