/* Everygrid — everygrid.app
   Palette taken from design/DESIGN-SYSTEM.md so the site and the app agree.
   Contrast pairs below are the ones the design system publishes; do not
   substitute a colour without re-checking the ratio. */

:root {
  --surface:      #F9FAFC;
  --surface-alt:  #F3F4F7;
  --ink:          #16171A;
  --ink-soft:     #52555C;
  --line:         #E2E4E9;
  --primary:      #3960BB;   /* 5.64:1 on --surface */
  --grid-0:       #E2E4E9;
  --grid-1:       #C9CEDA;
  --grid-2:       #8FA3CE;
  --grid-3:       #5C7CC4;
  --grid-4:       #3960BB;
  --accent:       #B8342F;
  --radius:       14px;
  --maxw:         720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface:     #16171A;
    --surface-alt: #1D1E21;
    --ink:         #F2F3F5;
    --ink-soft:    #A5A9B2;
    --line:        #2C2E31;
    --primary:     #93B0F5;
    --grid-0:      #232427;
    --grid-1:      #2E3950;
    --grid-2:      #3F5580;
    --grid-3:      #5878B8;
    --grid-4:      #93B0F5;
    --accent:      #FF7A6E;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font: 400 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 10;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 64px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 650; font-size: 18px; letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none;
}
.brand .mark {
  display: grid; grid-template-columns: repeat(3, 6px); gap: 2px;
}
.brand .mark i {
  width: 6px; height: 6px; border-radius: 1.5px; background: var(--grid-1);
  display: block;
}
.brand .mark i:nth-child(1),
.brand .mark i:nth-child(4),
.brand .mark i:nth-child(5),
.brand .mark i:nth-child(8),
.brand .mark i:nth-child(9) { background: var(--grid-4); }

nav.site a {
  color: var(--ink-soft); text-decoration: none; font-size: 15px;
  margin-left: 18px;
}
nav.site a:hover { color: var(--primary); text-decoration: underline; }

/* ---------- hero ---------- */

.hero { padding: 72px 0 56px; }
.hero h1 {
  font-size: clamp(34px, 6vw, 50px); line-height: 1.1; margin: 0 0 18px;
  letter-spacing: -0.025em; font-weight: 680;
}
.hero p.lede {
  font-size: clamp(18px, 2.4vw, 21px); color: var(--ink-soft);
  margin: 0 0 28px; max-width: 34em;
}

.grid-demo {
  display: grid; grid-template-columns: repeat(26, 1fr);
  gap: 3px; margin: 36px 0 8px;
  padding: 18px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface-alt);
}
.grid-demo span {
  aspect-ratio: 1; border-radius: 2px; background: var(--grid-0);
}
.grid-demo span.l1 { background: var(--grid-1); }
.grid-demo span.l2 { background: var(--grid-2); }
.grid-demo span.l3 { background: var(--grid-3); }
.grid-demo span.l4 { background: var(--grid-4); }
.caption { font-size: 14px; color: var(--ink-soft); margin: 0 0 8px; }

.pill {
  display: inline-block; font-size: 13px; font-weight: 600;
  letter-spacing: 0.02em; text-transform: uppercase;
  color: var(--primary); border: 1px solid var(--line);
  background: var(--surface-alt);
  padding: 5px 11px; border-radius: 999px; margin-bottom: 20px;
}

/* ---------- sections ---------- */

section { padding: 40px 0; border-top: 1px solid var(--line); }
section h2 {
  font-size: 24px; letter-spacing: -0.015em; margin: 0 0 14px; font-weight: 650;
}
section h3 {
  font-size: 18px; margin: 28px 0 8px; font-weight: 640;
}

.points { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.points li { padding-left: 26px; position: relative; }
.points li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 10px; height: 10px; border-radius: 2px; background: var(--grid-4);
}
.points strong { display: block; }
.points span { color: var(--ink-soft); }

/* ---------- long-form legal ---------- */

article.doc { padding: 40px 0 8px; }
article.doc h1 { font-size: 32px; letter-spacing: -0.02em; margin: 0 0 6px; }
article.doc .updated { color: var(--ink-soft); font-size: 15px; margin: 0 0 28px; }
article.doc h2 {
  font-size: 21px; margin: 40px 0 10px; letter-spacing: -0.01em;
  padding-top: 8px;
}
article.doc h3 { font-size: 17px; margin: 26px 0 8px; }
article.doc p, article.doc li { color: var(--ink); }
article.doc ul, article.doc ol { padding-left: 22px; }
article.doc li { margin: 7px 0; }
article.doc a { color: var(--primary); }

article.doc blockquote {
  margin: 18px 0; padding: 14px 18px;
  border-left: 3px solid var(--grid-3);
  background: var(--surface-alt); border-radius: 0 var(--radius) var(--radius) 0;
}
article.doc blockquote p { margin: 0; }

.callout {
  border: 1px solid var(--line); background: var(--surface-alt);
  border-radius: var(--radius); padding: 18px 20px; margin: 22px 0;
}
.callout p { margin: 0 0 10px; }
.callout p:last-child { margin: 0; }

.tablewrap { overflow-x: auto; margin: 20px 0; }
table {
  border-collapse: collapse; width: 100%; font-size: 15px; min-width: 460px;
}
th, td {
  text-align: left; vertical-align: top; padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
th { font-weight: 640; background: var(--surface-alt); }

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--line); margin-top: 56px;
  padding: 28px 0 48px; color: var(--ink-soft); font-size: 14px;
}
footer.site .row {
  display: flex; flex-wrap: wrap; gap: 16px 22px;
  align-items: center; justify-content: space-between;
}
footer.site a { color: var(--ink-soft); }
footer.site a:hover { color: var(--primary); }
footer.site nav { display: flex; flex-wrap: wrap; gap: 18px; }

/* ---------- utility ---------- */

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--primary); color: #fff; padding: 10px 14px; z-index: 20;
}
.skip:focus { left: 8px; top: 8px; }

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px;
}

@media (max-width: 520px) {
  .hero { padding: 48px 0 40px; }
  .grid-demo { grid-template-columns: repeat(18, 1fr); }
  nav.site a { margin-left: 12px; font-size: 14px; }
}