/* Digital Gardens — style.css */

@font-face { font-family: "IBM Plex Mono"; font-weight: 500; font-style: normal; font-display: swap; src: url("../assets/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Instrument Serif"; font-weight: 400; font-style: normal; font-display: swap; src: url("../assets/fonts/instrument-serif-latin-400-normal.woff2") format("woff2"); }

:root {
  --paper: #e9ebed;          /* light grey, tipped cool so it can never read as beige */
  --ink: #11161a;
  --soft: #4b545b;
  --mute: #7a838a;
  --leaf: #177a49;
  --serif: "Instrument Serif", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --pad: clamp(20px, 5.2vw, 88px);
  /* side gutters also clear a notch or system bar on phones held sideways */
  --pad-l: max(var(--pad), env(safe-area-inset-left, 0px));
  --pad-r: max(var(--pad), env(safe-area-inset-right, 0px));
  --ease: cubic-bezier(.2, .7, .15, 1);
}

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

html { background: var(--paper); -webkit-text-size-adjust: 100%; }
html.turning { cursor: grabbing; user-select: none; -webkit-user-select: none; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(19px, 1.55vw, 23px);
  line-height: 1.32;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: #c5e3bd; color: var(--ink); }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 1px solid var(--leaf); outline-offset: 5px; }

/* ---------- the drawing ---------- */
#garden {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100lvh;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.ready #garden { opacity: 1; }

/* ---------- top bar ---------- */
.bar {
  position: absolute;
  z-index: 10;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-block: clamp(18px, 2.4vw, 30px);
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
  font-size: clamp(19px, 1.5vw, 22px);
  line-height: 1;
  letter-spacing: -0.01em;
  pointer-events: none;
}
.bar > * { pointer-events: auto; }
.bar nav { display: flex; gap: clamp(18px, 2.2vw, 32px); align-items: baseline; }
.bar nav a, .bar nav button {
  font: inherit;
  letter-spacing: inherit;
  color: var(--soft);
  background: none;
  border: 0;
  padding: 4px 0;
  cursor: pointer;
  transition: color .3s;
}
.bar nav a:hover, .bar nav button:hover { color: var(--ink); }
.bar nav button::after {
  content: "";
  display: inline-block;
  width: 5px; height: 5px;
  margin-left: 7px;
  border-radius: 50%;
  border: 1px solid currentColor;
  vertical-align: 0.16em;
  transition: background .3s, border-color .3s;
}
.bar nav button[aria-pressed="true"] { color: var(--ink); }
.bar nav button[aria-pressed="true"]::after { background: var(--leaf); border-color: var(--leaf); }

/* ---------- stages ---------- */
main { position: relative; z-index: 2; }

.stage {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  align-items: center;
  padding-block: 16vh;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
}
.stage + .stage { margin-top: 55vh; }

.copy { max-width: 25.5em; }
.stage[data-side="right"] .copy { justify-self: end; }

h1, h2 {
  margin: 0;
  font-weight: 400;
  letter-spacing: -0.024em;
  text-wrap: balance;
}
h1 { font-size: clamp(52px, 7.6vw, 128px); line-height: 0.9; }
h2 { font-size: clamp(40px, 4.7vw, 74px); line-height: 0.95; }

.copy p { margin: 1.25em 0 0; max-width: 21em; color: var(--soft); text-wrap: pretty; }

/* hero */
.hero { align-items: end; padding-bottom: clamp(56px, 10vh, 120px); }
.hero .copy { max-width: min(47rem, 58vw); }

/* closing */
.closing { justify-items: center; text-align: center; align-items: end; padding-bottom: 16vh; min-height: 112vh; }
.closing .copy { max-width: 40rem; }
.closing .copy p { margin-left: auto; margin-right: auto; }
.cta {
  display: inline-block;
  padding-bottom: 3px;
  color: var(--ink);
  border-bottom: 1px solid currentColor;
  transition: color .3s;
}
.cta:hover { color: var(--leaf); }

/* copy arrives a line at a time (only once scripts are running, so it is never lost without them) */
.js .copy > * { opacity: 0; transform: translateY(18px); transition: opacity 1.2s var(--ease), transform 1.2s var(--ease); }
.js .copy.in > * { opacity: 1; transform: none; }
.js .copy.in > :nth-child(2) { transition-delay: .12s; }

/* ---------- footer ---------- */
.foot {
  position: relative;
  z-index: 2;
  padding-block: 0 26px;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
  font-size: 16px;
  color: var(--mute);
}

/* ---------- narrow screens: drawing above, words below ---------- */
@media (max-width: 760px), (max-aspect-ratio: 19/20) {
  .stage { align-items: end; padding-top: 0; padding-bottom: 11vh; }
  .stage[data-side="right"] .copy { justify-self: start; }
  .stage + .stage { margin-top: 50vh; }
  .hero { padding-bottom: 56px; }
  .hero .copy { max-width: none; }
  h1 { font-size: clamp(46px, 13.4vw, 78px); }
  h2 { font-size: clamp(38px, 10.4vw, 60px); }
  .closing { text-align: left; justify-items: start; }
  .closing .copy p { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .js .copy > * { transition-duration: .01s; transform: none; }
  html { scroll-behavior: auto; }
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}