/* gbcboot.com — one stylesheet. White ground, one type family, no rules, no frames. */

:root {
  --ink: #111;
  --mute: #777;
  --hair: #ccc;
  --gutter: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { background: #fff; }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  font-weight: 300;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(40px, 8vh, 96px) var(--gutter) clamp(80px, 14vh, 160px);
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }

/* Logotype */
.logo { margin: 0 0 clamp(56px, 10vh, 120px); line-height: 0; }
.logo a { display: inline-block; }
.mark { width: clamp(132px, 16vw, 200px); height: auto; color: var(--ink); display: block; }

/* Five staggered squares on a twelve-column grid. */
.pictures {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: calc((min(1120px, 100vw - 2 * var(--gutter)) - 11 * 16px) / 12);
  gap: 16px;
  margin: 0 0 clamp(72px, 12vh, 140px);
}
.pictures img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-width: 0;
  max-width: 100%;
  background: #f4f4f4;
}
.pictures img:nth-child(1) { grid-column: 1 / span 5;  grid-row: 1 / span 5; }
.pictures img:nth-child(2) { grid-column: 8 / span 4;  grid-row: 2 / span 4; }
.pictures img:nth-child(3) { grid-column: 3 / span 3;  grid-row: 7 / span 3; }
.pictures img:nth-child(4) { grid-column: 7 / span 5;  grid-row: 7 / span 5; }
.pictures img:nth-child(5) { grid-column: 1 / span 4;  grid-row: 11 / span 4; }

@media (max-width: 720px) {
  .pictures { grid-template-columns: repeat(6, minmax(0, 1fr)); grid-auto-rows: auto; gap: 12px; }
  .pictures img { aspect-ratio: 1; height: auto; }
  .pictures img:nth-child(1) { grid-column: 1 / span 5; grid-row: auto; }
  .pictures img:nth-child(2) { grid-column: 3 / span 4; grid-row: auto; }
  .pictures img:nth-child(3) { grid-column: 1 / span 3; grid-row: auto; }
  .pictures img:nth-child(4) { grid-column: 2 / span 5; grid-row: auto; }
  .pictures img:nth-child(5) { grid-column: 1 / span 4; grid-row: auto; }
}

/* One block of text */
.text { max-width: 36em; margin: 0 0 clamp(40px, 7vh, 72px); }
.text p { margin: 0 0 1.2em; }
.text p:first-child { font-weight: 400; }

.contact { margin: 0 0 clamp(40px, 7vh, 72px); }
.contact p { margin: 0; }

/* Mailing list: a label, a field, a word. */
.join { max-width: 36em; }
.join form { margin: 0; }
.join label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 10px;
}
.row { display: flex; align-items: baseline; gap: 24px; }
.join input[type="email"] {
  flex: 1;
  min-width: 0;
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--hair);
  border-radius: 0;
  padding: 6px 0;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
.join input[type="email"]:focus { border-bottom-color: var(--ink); }
.join input::placeholder { color: #b5b5b5; }
.join button {
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  background: none;
  border: 0;
  border-radius: 0;
  padding: 6px 0;
  cursor: pointer;
}
.join button:hover { text-decoration: underline; text-underline-offset: 0.3em; text-decoration-thickness: 1px; }

/* Honeypot: off-canvas, never shown. */
.hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }

/* Error state, no script: the Worker sends failed posts back to /#retry. */
.retry { display: none; margin: 14px 0 0; font-size: 14px; color: var(--mute); }
.retry:target { display: block; }

main.short .logo { margin-bottom: clamp(40px, 8vh, 80px); }