:root {
  color-scheme: dark;
  --bg: oklch(32% 0.13 25);
  --bg-2: oklch(20% 0.1 25);
  --fg: oklch(95% 0.02 85);
  --muted: oklch(80% 0.04 60 / 0.7);
  --accent: oklch(82% 0.14 85);

  --serif: "Cormorant Garamond", "Times New Roman", serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
}

html,
body {
  height: 100%;
}

body {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: clamp(1.5rem, 5vw, 3rem);
  font-family: var(--serif);
  color: var(--fg);
  background: radial-gradient(
    120% 80% at 50% 0%,
    var(--bg) 0%,
    var(--bg-2) 70%
  );
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
main {
  position: relative;
  z-index: 1;
}

main {
  text-align: center;
  display: grid;
  gap: clamp(2rem, 6vw, 3.5rem);
  max-width: 60ch;
}

main p:first-of-type {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: lowercase;
}

h1 {
  font-weight: 400;
  font-size: clamp(2.75rem, 11vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
h1 em {
  display: block;
  font-style: italic;
  color: var(--accent);
}

time {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.5rem, 3vw, 1.5rem);
  font-variant-numeric: tabular-nums;
}
time span {
  display: grid;
  gap: 0.35rem;
  padding-block: 1rem 0;
  border-top: 1px solid color-mix(in oklch, var(--fg) 18%, transparent);
}
time b {
  font-weight: 400;
  font-size: clamp(2rem, 9vw, 4rem);
  font-feature-settings: "lnum";
  line-height: 1;
}
time i {
  font-style: normal;
  font-family: var(--mono);
  font-size: clamp(0.6rem, 2.73vw, 0.7rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

main p:last-of-type {
  font-style: italic;
  color: var(--muted);
  font-size: 1.05rem;
}

[data-sr-only] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[data-merry] {
  display: none;
}

body.christmas [data-almost],
body.christmas time {
  display: none;
}
body.christmas [data-merry] {
  display: inline;
}

[data-fullscreen] {
  position: fixed;
  inset-block-end: clamp(1rem, 3vw, 1.5rem);
  inset-inline-start: clamp(1rem, 3vw, 1.5rem);
  z-index: 1;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid color-mix(in oklch, var(--fg) 18%, transparent);
  border-radius: 0.375rem;
  background: color-mix(in oklch, var(--bg-2) 70%, transparent);
  color: var(--muted);
  cursor: pointer;
  backdrop-filter: blur(6px);
}
[data-fullscreen]:hover,
[data-fullscreen]:focus-visible {
  color: var(--fg);
  border-color: color-mix(in oklch, var(--fg) 40%, transparent);
  background: color-mix(in oklch, var(--bg-2) 90%, transparent);
  outline: none;
}
[data-fullscreen] svg {
  width: 1.1rem;
  height: 1.1rem;
}
[data-fullscreen] [data-icon-exit] {
  display: none;
}
body.fullscreen [data-fullscreen] [data-icon-enter] {
  display: none;
}
body.fullscreen [data-fullscreen] [data-icon-exit] {
  display: block;
}

@media (prefers-reduced-motion: no-preference) {
  h1 em {
    animation: glow 4s ease-in-out infinite alternate;
  }
  [data-fullscreen] {
    transition:
      color 0.2s,
      border-color 0.2s,
      background 0.2s;
  }
}
@keyframes glow {
  from {
    opacity: 0.85;
  }
  to {
    opacity: 1;
  }
}