/* Grund: a sandbank on a chart. Warm paper and sand from Rikke's board, an ink band for her
   black slides, one italic word per headline, the ripple drawn as contour lines.
   Tokens only in :root. Record changes in CLAUDE.md in the same commit. */

:root {
  --paper: #F4F1EB;
  --ink: #1C1917;
  --muted: #645B55;
  --rule: rgba(28, 25, 23, 0.9);
  --hair: rgba(28, 25, 23, 0.14);
  --sand: #CFAD76;          /* the mark's ground */
  --mark-ink: #1C1917;      /* ripples in the mark, same in both themes */
  --bank: #E6D9C0;          /* the sandbank panel */
  --line: #855D52;          /* ripple contours */
  --clay: #855D52;          /* accent: the call to action and the mail underline, nothing else */
  --on-clay: #F4F1EB;
  --band: #1C1917;          /* the dark principles band */
  --band-ink: #EDE7DE;
  --band-muted: #B3A89E;
  --band-rule: rgba(237, 231, 222, 0.35);

  --display: "Newsreader", Georgia, serif;
  --body: "Public Sans", system-ui, sans-serif;

  --gutter: clamp(16px, 3.2vw, 44px);
  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 40px; --s5: 72px; --s6: 120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #161311; --ink: #EDE7DE; --muted: #ADA298;
    --rule: rgba(237, 231, 222, 0.85); --hair: rgba(237, 231, 222, 0.14);
    --bank: #241E1A; --line: #B98B72; --clay: #D3A48D; --on-clay: #161311;
    --band: #0D0B0A; --band-ink: #EDE7DE; --band-muted: #ADA298; --band-rule: rgba(237, 231, 222, 0.3);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #161311; --ink: #EDE7DE; --muted: #ADA298;
  --rule: rgba(237, 231, 222, 0.85); --hair: rgba(237, 231, 222, 0.14);
  --bank: #241E1A; --line: #B98B72; --clay: #D3A48D; --on-clay: #161311;
  --band: #0D0B0A; --band-ink: #EDE7DE; --band-muted: #ADA298; --band-rule: rgba(237, 231, 222, 0.3);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--clay); outline-offset: 3px; }
h1, h2, h3, p, figure { margin: 0; }
em { font-style: italic; }

.wrap { max-width: 1480px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

.kicker {
  font: 600 12px/1.2 var(--body); letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
}

/* Header */
.bar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s3);
  padding-top: var(--s3); padding-bottom: var(--s3);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; min-height: 44px; }
.mark { width: 30px; height: 30px; flex: none; color: var(--mark-ink); }
.mark-ground { fill: var(--sand); }
.wordmark { font: 500 21px/1 var(--display); letter-spacing: -0.005em; }
nav { display: flex; align-items: center; gap: var(--s3); }
nav a { font-size: 15px; text-decoration: none; padding: 12px 0; }
nav a:hover { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.theme {
  width: 44px; height: 44px; display: grid; place-items: center; margin-right: -12px;
  background: none; border: 0; color: var(--ink); cursor: pointer;
}
.theme svg { width: 18px; height: 18px; }

/* Hero */
.hero {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--s5);
  align-items: stretch; padding-top: var(--s5); padding-bottom: var(--s5);
}
.hero-text { display: flex; flex-direction: column; justify-content: center; padding: var(--s4) 0; }
.hero .kicker { margin-bottom: var(--s3); }
h1 {
  font: 400 clamp(44px, 6.4vw, 104px)/0.98 var(--display);
  font-optical-sizing: auto; letter-spacing: -0.025em; text-wrap: balance;
}
.lede { max-width: 54ch; font-size: 19px; line-height: 1.55; margin-top: var(--s4); text-wrap: pretty; }
.cta {
  align-self: flex-start; display: inline-flex; align-items: center; min-height: 52px; padding: 0 28px;
  margin-top: var(--s4); background: var(--clay); color: var(--on-clay); text-decoration: none;
  font: 600 16px/1 var(--body);
}
.cta:hover { filter: brightness(1.1); }

.bank { position: relative; background: var(--bank); min-height: 560px; overflow: hidden; }
.ripple {
  position: absolute; inset: 0; background: var(--line); opacity: 0.75;
  -webkit-mask: url(/ripple.svg) center / cover no-repeat; mask: url(/ripple.svg) center / cover no-repeat;
}
.bank figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: var(--s5) var(--s3) var(--s3);
  background: linear-gradient(to top, var(--bank) 55%, transparent);
  font: italic 400 26px/1.2 var(--display);
}
.bank figcaption span { display: block; font: 400 14px/1.4 var(--body); color: var(--muted); margin-top: 4px; }

/* Section heads */
.sec-head { margin-bottom: var(--s4); }
.sec-head .kicker { margin-bottom: var(--s2); }
h2 { font: 400 clamp(32px, 3.8vw, 56px)/1.05 var(--display); letter-spacing: -0.015em; max-width: 20ch; text-wrap: balance; }
h3 { font: 600 19px/1.3 var(--body); letter-spacing: -0.005em; }

/* What we do */
.work { padding-top: var(--s5); padding-bottom: var(--s5); }
.chapters {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--s5);
}
.chapters li {
  display: grid; grid-template-columns: 96px minmax(0, 1fr); grid-template-rows: auto 1fr;
  align-content: start; column-gap: var(--s3);
  border-top: 1px solid var(--rule); padding: var(--s3) 0 var(--s4);
}
.chapters h3, .chapters p { grid-column: 2; }
.num { font: 400 56px/0.9 var(--display); letter-spacing: -0.02em; font-variant-numeric: lining-nums tabular-nums; }
.chapters li .num { grid-row: 1 / span 2; }
.chapters p { color: var(--muted); margin-top: 8px; max-width: 46ch; text-wrap: pretty; }
.next {
  display: grid; grid-template-columns: 96px minmax(0, 1fr); column-gap: var(--s3); align-items: baseline;
  border-top: 1px solid var(--hair); padding-top: var(--s3); color: var(--muted);
  font: 400 22px/1.3 var(--display);
}
.next .num { color: var(--muted); }

/* How we work: the dark band */
.principles { background: var(--band); color: var(--band-ink); padding: var(--s6) 0; }
.principles .kicker { color: var(--band-muted); }
.rules {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s4);
  counter-reset: rule;
}
.rules li { border-top: 1px solid var(--band-rule); padding-top: var(--s3); counter-increment: rule; }
.rules li::before {
  content: counter(rule, upper-roman); display: block; margin-bottom: var(--s2);
  font: italic 400 22px/1 var(--display); color: var(--band-muted);
}
.rules p { margin-top: 10px; color: var(--band-muted); max-width: 42ch; }

/* Contact */
.contact { padding-top: var(--s6); padding-bottom: var(--s6); }
.contact .kicker { margin-bottom: var(--s3); }
.mail {
  display: inline-block; font: 400 clamp(26px, 5.2vw, 76px)/1.1 var(--display); letter-spacing: -0.02em;
  text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 0.16em;
  text-decoration-color: var(--clay); overflow-wrap: anywhere;
}
.mail:hover { color: var(--clay); }
.owners { margin-top: var(--s3); color: var(--muted); }

/* Footer */
.foot {
  display: flex; justify-content: space-between; gap: var(--s2); flex-wrap: wrap;
  padding-top: var(--s3); padding-bottom: var(--s4); border-top: 1px solid var(--rule);
  font-size: 14px; color: var(--muted);
}

/* Tablet */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: var(--s4); }
  .hero-text { padding: var(--s4) 0 0; }
  .bank { min-height: 260px; }
  .chapters { grid-template-columns: 1fr; }
  .rules { grid-template-columns: 1fr; gap: var(--s3); }
}

/* Phone */
@media (max-width: 640px) {
  body { font-size: 16px; }
  nav a { display: none; }
  .lede { font-size: 17px; }
  .bank { min-height: 200px; }
  .chapters li, .next { grid-template-columns: 64px minmax(0, 1fr); column-gap: var(--s2); }
  .num { font-size: 40px; }
  .principles { padding: var(--s5) 0; }
  .contact { padding-top: var(--s5); padding-bottom: var(--s5); }
  .wordmark { font-size: 19px; }
}