/* ---------- Fonts ---------- */
@font-face {
  font-family: 'Sfizia';
  src: url("assets/fonts/sfizia-reg.woff") format('woff');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Sfizia';
  src: url("assets/fonts/sfizia-bd.woff") format('woff');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Sfizia';
  src: url("assets/fonts/sfizia-it.woff") format('woff');
  font-weight: 400; font-style: italic; font-display: swap;
}
@font-face {
  font-family: 'Engravers Gothic';
  src: url("assets/fonts/eng-gothic.woff") format('woff');
  font-weight: 400; font-style: normal; font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --green:   #1c4a31;
  --green-d: #143523;
  --ink:     #221f1f;
  --paper:   #f5f3ec;
  --paper-2: #efece2;
  --sand:    #dcdbd0;
  --rust:    #8c432a;
  --line:    #ddd9cc;
  --line-2:  #cfcabb;
  --muted:   #6f6e63;

  --sans: 'Engravers Gothic', ui-sans-serif, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --body: ui-sans-serif, -apple-system, 'Helvetica Neue', 'Segoe UI', Arial, sans-serif;
  --serif: 'Sfizia', Georgia, 'Times New Roman', serif;

  --maxw: 1180px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; }

.kicker {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: .34em;
  font-size: .72rem;
  color: var(--green);
  margin: 0 0 1.1rem;
}

/* ---------- Nav ---------- */
.nav {
  display: flex; justify-content: center;
  padding: 1.6rem 1rem;
}
.nav__logo img { height: 34px; width: auto; }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: 8.5rem 1.5rem 5rem; text-align: center;
}
.hero__title {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(3rem, 8vw, 6rem); line-height: .98;
  letter-spacing: -.01em; margin: 0 0 1.6rem; color: var(--green);
}
.hero__standard {
  display: block;
  font-family: var(--sans);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: .28em;
  font-size: clamp(1.3rem, 3.2vw, 2.1rem);
  margin-top: 1.1rem;
  /* offset the trailing letter-spacing so the word stays optically centred */
  margin-left: .28em;
}
.hero__lead {
  max-width: 44ch; margin: 0 auto 2.4rem;
  font-size: 1.12rem; color: var(--muted);
}
.hero__jump { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }
.hero__jump a {
  font-family: var(--sans); text-transform: uppercase;
  letter-spacing: .22em; font-size: .74rem; text-decoration: none;
  padding-bottom: 3px; border-bottom: 1px solid var(--green);
  transition: opacity .2s var(--ease);
}
.hero__jump a:hover { opacity: .55; }

/* ---------- Sections ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 5rem 1.5rem; }
.section--alt {
  max-width: none; background: var(--paper-2);
  border-block: 1px solid var(--line);
}
.section--alt > * { max-width: var(--maxw); margin-inline: auto; }
.section__head { margin-bottom: 2.6rem; }
.section__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2rem, 4.5vw, 3rem); margin: 0 0 1rem; color: var(--green);
}
.section__note { max-width: 52ch; color: var(--muted); margin: 0; }
.section__note--foot { margin-top: 2.5rem; padding-top: 1.6rem; border-top: 1px solid var(--line); }

/* ---------- Tile rows (square, single line) ---------- */
.tile-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.1rem;
}
.tile-row--six { grid-template-columns: repeat(6, 1fr); }

.cell { margin: 0; display: flex; flex-direction: column; gap: .85rem; }

.tile {
  position: relative;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--paper);
  transition: box-shadow .3s var(--ease), transform .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
}
.tile--interactive { cursor: pointer; }
.tile--interactive:hover { box-shadow: 0 18px 40px -22px rgba(20,53,35,.5); transform: translateY(-3px); }
.tile.is-dark { background: var(--green); border-color: var(--green-d); }

.tile__stage { position: absolute; inset: 0; display: grid; place-items: center; padding: 22%; }
.tile__stage img { max-height: 100%; max-width: 100%; width: auto; }
.tile--type .tile__stage { padding: 16%; }

/* hover-reveal download bar */
.tile__dl {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
  display: flex; gap: .4rem; justify-content: center;
  padding: .7rem;
  background: linear-gradient(to top, color-mix(in srgb, var(--paper) 92%, transparent), transparent);
  opacity: 0; transform: translateY(8px);
  transition: opacity .25s var(--ease), transform .25s var(--ease);
  pointer-events: none;
}
.tile:hover .tile__dl, .tile:focus-within .tile__dl { opacity: 1; transform: translateY(0); pointer-events: auto; }
.tile.is-dark .tile__dl { background: linear-gradient(to top, color-mix(in srgb, var(--green) 92%, transparent), transparent); }

.tile__dl a {
  font-family: var(--sans); text-transform: uppercase; letter-spacing: .12em;
  font-size: .6rem; text-decoration: none;
  background: var(--paper); color: var(--ink);
  border: 1px solid var(--line-2); padding: .4rem .6rem; border-radius: 999px;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.tile__dl a:hover { background: var(--green); color: #fff; border-color: var(--green); }
.tile.is-dark .tile__dl a { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.3); }
.tile.is-dark .tile__dl a:hover { background: #fff; color: var(--green); }

/* flip hint */
.tile__flip {
  position: absolute; right: .8rem; top: .8rem; z-index: 3;
  width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  border: 1px solid var(--line-2); background: var(--paper); color: var(--muted);
  font-size: .85rem; opacity: 0; transition: opacity .25s var(--ease);
}
.tile--interactive:hover .tile__flip { opacity: 1; }
.tile.is-dark .tile__flip { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.3); color: #fff; }

/* colour tile */
.tile--colour { cursor: pointer; }
.tile--colour:hover { box-shadow: 0 18px 40px -22px rgba(20,53,35,.5); transform: translateY(-3px); }
.tile--colour .tile__copy {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--sans); text-transform: uppercase; letter-spacing: .24em;
  font-size: .64rem; color: #fff; background: rgba(0,0,0,.26);
  opacity: 0; transition: opacity .22s var(--ease);
}
.tile--colour:hover .tile__copy { opacity: 1; }

/* caption */
.cell__cap { line-height: 1.35; }
.cell__name {
  font-family: var(--serif); font-size: 1.05rem; color: var(--ink); display: block;
}
.cell__hex {
  font-family: var(--sans); text-transform: uppercase; letter-spacing: .14em;
  font-size: .7rem; color: var(--muted);
  background: none; border: none; padding: 0; cursor: pointer; font-weight: inherit;
  transition: color .18s var(--ease);
}
.cell__hex:hover { color: var(--green); }
.cell__sub {
  font-family: var(--sans); text-transform: uppercase; letter-spacing: .18em;
  font-size: .64rem; color: var(--muted);
}

/* ---------- Tiles responsive: stack vertically on small screens ---------- */
@media (max-width: 900px) {
  .tile-row, .tile-row--six { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .tile-row, .tile-row--six { grid-template-columns: 1fr; }
  .tile { aspect-ratio: 16 / 9; }
}

/* ---------- Typography cards ---------- */
.type-card {
  display: grid; grid-template-columns: 320px 1fr; gap: 2.5rem; align-items: center;
  padding: 2.5rem 0; border-top: 1px solid var(--line);
}
.type-card:first-of-type { border-top: none; }
@media (max-width: 760px) { .type-card { grid-template-columns: 1fr; gap: 1.5rem; } }
.type-card__name { font-family: var(--serif); font-size: 2rem; margin: 0 0 .6rem; color: var(--green); }
.type-card__desc { color: var(--muted); margin: 0 0 1.3rem; }
.type-card__downloads { display: flex; gap: .55rem; flex-wrap: wrap; }
.type-card__downloads a {
  font-family: var(--sans); text-transform: uppercase; letter-spacing: .12em;
  font-size: .64rem; text-decoration: none;
  border: 1px solid var(--line-2); padding: .42rem .7rem; border-radius: 999px;
  transition: background .18s var(--ease), color .18s var(--ease);
}
.type-card__downloads a:hover { background: var(--green); color: #fff; border-color: var(--green); }
.type-card__specimen { color: var(--green); overflow: hidden; }
.specimen__big { font-size: clamp(4rem, 12vw, 8rem); line-height: .9; }
.specimen__set { font-size: 1.25rem; line-height: 1.7; color: var(--ink); margin-top: .6rem; }

/* ---------- Footer ---------- */
.footer { text-align: center; padding: 4rem 1.5rem 3.5rem; border-top: 1px solid var(--line); color: var(--muted); }
.footer__mark { height: 34px; width: auto; margin: 0 auto 1.2rem; opacity: .9; }
.footer p { margin: .2rem 0; }
.footer__fine { font-family: var(--sans); text-transform: uppercase; letter-spacing: .2em; font-size: .64rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 2rem; transform: translate(-50%, 1.5rem);
  background: var(--green); color: #fff;
  font-family: var(--sans); text-transform: uppercase; letter-spacing: .16em; font-size: .72rem;
  padding: .8rem 1.4rem; border-radius: 999px;
  opacity: 0; pointer-events: none; z-index: 100;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
  box-shadow: 0 12px 30px -10px rgba(20,53,35,.6);
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }