:root {
  --blontea-pink: #ff2ec4;
  --paper: #fff5fb;
  --ink: #121212;
  --beton: #b8b5b0;

  /* Spacing scale (8px base). Use only these. */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
  --margin: clamp(1.25rem, 6vw, 5rem);
  --rule: 1px solid var(--ink);
}

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

html {
  background: var(--paper);
  color: var(--ink);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font:
    0.75rem/1.6 "Jost",
    Futura,
    "Century Gothic",
    sans-serif;
  letter-spacing: 0.08em;
}

h1,
h2,
p {
  margin: 0;
  font: inherit;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
  background: var(--blontea-pink);
}

.poster {
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  grid-template-areas: "info" "stage" "guest" "imprint";
  gap: var(--space-4);
  min-height: 100svh;
  padding: var(--margin);
  overflow: clip;
}

/* Mobile wrapper for everything above the imprint rule; invisible to the desktop grid. */
.fold {
  display: contents;
}

/* Desktop: equal gaps between texts of any length. Mobile switches to a grid. */
.row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
}

/* Info head */
.info {
  grid-area: info;
  align-items: start;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* Desktop has room: address on one line. Mobile keeps the break. */
@media (width > 48rem) {
  .info br {
    display: none;
  }
}

.jp {
  font-family: "Dela Gothic One", sans-serif;
  font-size: 1rem;
  line-height: 1;
  letter-spacing: 0.2em;
  white-space: nowrap;
}

/* Stage */
.stage {
  grid-area: stage;
  container-type: inline-size;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: var(--space-2);
  text-align: center;
}

.hero {
  display: grid;
  justify-items: center;
  gap: var(--space-3);
}

.logo {
  width: clamp(4rem, 10cqi, 7rem);
  fill: var(--blontea-pink);
}

/* Only the burst spins; the lettering stays readable. */
.lettering {
  fill: #fff;
}

@media (prefers-reduced-motion: no-preference) {
  .burst {
    transform-box: fill-box;
    transform-origin: center;
    animation: brew 24s linear infinite;
  }
}

@keyframes brew {
  to {
    transform: rotate(1turn);
  }
}

.head {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2.5rem, 7cqi, 6rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
}

.head span {
  white-space: nowrap;
}

/* Pink on paper is ~3.1:1: keep at 1.5rem (24px) or larger. */
.claim {
  font-family: "Mister Slasher", sans-serif;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--blontea-pink);
}

/* Guest list */
.guest {
  grid-area: guest;
  max-width: 36ch;
  justify-self: center;
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  /* Lift the block off the imprint rule, closer to the stage. */
  padding-bottom: var(--space-4);
  font-size: 0.875rem;
  text-align: center;
  text-wrap: balance;
}

.guest-mail {
  font-family: "Bebas Neue", sans-serif;
  font-size: 1.125rem;
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Imprint: the one rule on the page. */
.imprint {
  grid-area: imprint;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  padding-top: var(--space-2);
  border-top: var(--rule);
  font-size: 0.625rem;
}

.imprint h2 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 0.8125rem;
  line-height: 1.2;
  letter-spacing: 0.14em;
}

@media (max-width: 48rem) {
  .poster {
    grid-template-rows: auto auto;
    grid-template-areas: "fold" "imprint";
    gap: var(--space-3);
  }

  /* Everything down to the imprint rule fills the first screen; the rule sits one margin
     above the bottom edge, mirroring the top padding. */
  .fold {
    grid-area: fold;
    display: grid;
    grid-template-rows: 1fr auto auto;
    grid-template-areas: "stage" "info" "guest";
    gap: var(--space-3);
    min-height: calc(100svh - 2 * var(--margin) - var(--space-3));
  }

  /* Keeps the imprint text below the fold. */
  .imprint {
    padding-top: var(--margin);
  }

  .logo {
    width: clamp(4rem, 22cqi, 7rem);
  }

  .head {
    font-size: 16cqi;
  }

  .head span {
    display: block;
  }

  .row {
    display: grid;
    grid-template-columns: 1fr;
    row-gap: var(--space-2);
  }

  /* No room for one line: 黙って淹れろ as a single vertical column at the edge.
     min-height = 6 glyphs × 1.1em (letter-spacing) at 1.125rem. */
  .info {
    position: relative;
    padding-right: var(--space-3);
    min-height: 7.5rem;
  }

  .jp {
    position: absolute;
    top: 0;
    right: 0;
    writing-mode: vertical-rl;
    letter-spacing: 0.1em;
    font-size: 1.125rem;
  }

  .guest {
    justify-self: start;
    justify-items: start;
    padding-bottom: 0;
    text-align: left;
  }
}