/* Palette A (grey indigo), chosen by the owner 2026-10-18. Dark tokens appear twice: once for the system setting, once for the toggle. */
:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #555b66;
  --line: #e2e4e8;
  --accent: #50547a;
  --accent-fg: #ffffff;
  --tint: #eff0f5;
  --chip: #eff0f5;
  --c-indigo: #50547a;
  --c-teal: #4f6b68;
  --c-tan: #85704f;
  --gutter: 16px;
  --measure: 720px;
  --radius: 8px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111317;
    --fg: #ececf0;
    --muted: #a3a9b5;
    --line: #2a2e36;
    --accent: #b4b7d2;
    --accent-fg: #14162a;
    --tint: #1b1d2b;
    --chip: #1b1d2b;
    --c-indigo: #b4b7d2;
    --c-teal: #9fc0bb;
    --c-tan: #d3bd97;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111317;
  --fg: #ececf0;
  --muted: #a3a9b5;
  --line: #2a2e36;
  --accent: #b4b7d2;
  --accent-fg: #14162a;
  --tint: #1b1d2b;
  --chip: #1b1d2b;
  --c-indigo: #b4b7d2;
  --c-teal: #9fc0bb;
  --c-tan: #d3bd97;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 1rem/1.6 var(--font);
}
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.site-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 16px;
  padding: 8px var(--gutter);
  background: var(--bg); border-bottom: 1px solid var(--line);
}
.brand { color: var(--fg); font-weight: 700; text-decoration: none; padding: 10px 0; }
.site-header nav { display: flex; gap: 4px; }
.site-header nav a {
  color: var(--fg); text-decoration: none; padding: 10px 12px; border-radius: var(--radius);
  min-height: 44px; display: inline-flex; align-items: center;
}
.site-header nav a:hover { background: var(--chip); }

main, .site-footer { max-width: var(--measure); margin: 0 auto; padding: 0 var(--gutter); }
.intro { padding: 56px 0 24px; }
.page { padding-top: 40px; }
.page:first-child { border-top: 0; }
h1 { font-size: clamp(2.2rem, 8vw, 3.2rem); line-height: 1.1; margin: 0 0 12px; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 0; }
section { padding: 32px 0; border-top: 1px solid var(--line); }
.intro { border-top: 0; }
h2 { font-size: 1.5rem; margin: 0 0 16px; }
h3 { font-size: 1.1rem; margin: 24px 0 6px; }
section > h3:first-of-type { margin-top: 0; }

.project { padding: 20px 0; }
.project + .project { border-top: 1px solid var(--line); }
.project h3 { margin-top: 0; }
.project p { margin: 0 0 8px; }
.tech { color: var(--muted); font-size: 0.95rem; }
.note { color: var(--muted); font-size: 0.95rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-top: 12px; }
.button {
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
  background: var(--accent); color: var(--accent-fg);
  border: 0; border-radius: var(--radius); padding: 10px 16px; min-height: 44px;
  display: inline-flex; align-items: center;
}
.button:hover { filter: brightness(1.1); }
.text-link { padding: 10px 0; min-height: 44px; display: inline-flex; align-items: center; }

.demo { margin-top: 16px; }
.demo iframe {
  display: block; width: 100%; height: 70vh; min-height: 420px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg);
}

.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { background: var(--chip); border-radius: 999px; padding: 4px 12px; font-size: 0.95rem; }

.site-footer { padding-top: 24px; padding-bottom: 40px; color: var(--muted); border-top: 1px solid var(--line); }
.site-footer p { margin: 0; }

#contact a { display: inline-flex; align-items: center; min-height: 44px; }

.site-header nav a[aria-current="page"] { background: var(--chip); font-weight: 600; }
.brand[aria-current="page"] { text-decoration: underline; }
.cards { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.card {
  display: flex; flex-direction: column; gap: 4px; min-height: 44px; padding: 16px;
  border: 1px solid var(--line); border-radius: var(--radius); color: var(--fg); text-decoration: none;
}
.card:hover { border-color: var(--accent); }
.card strong { color: var(--accent); }
.card span { color: var(--muted); font-size: 0.95rem; }

.page h1 { font-size: 1.8rem; margin: 0 0 16px; }
.page h2 { font-size: 1.1rem; margin: 24px 0 6px; }
.page > h1 + h2, .project h2 { margin-top: 0; }

.hero { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.portrait { width: 160px; height: 160px; border-radius: 50%; object-fit: cover; flex: none; }
.hero > div { flex: 1 1 280px; }
.entry { margin: 0 0 16px; }
.entry p { margin: 0; }
.entry-title { font-weight: 600; }
.entry-meta { color: var(--muted); }
.project h3 { font-size: 1rem; margin: 16px 0 4px; }
.facts { margin: 0 0 8px; padding-left: 20px; }

a[href^="mailto:"] { display: inline-flex; align-items: center; min-height: 44px; }

/* Colour and theme toggle */
.site-header { border-bottom: 3px solid var(--accent); }
.header-tools { display: flex; align-items: center; gap: 4px; }
.theme-toggle {
  font: inherit; cursor: pointer; color: var(--fg); background: transparent;
  border: 1px solid var(--line); border-radius: var(--radius);
  min-height: 44px; min-width: 44px; padding: 0 12px;
}
.theme-toggle:hover { background: var(--tint); border-color: var(--accent); }
h1, .page h2 { color: var(--accent); }
.page h2 { border-bottom: 2px solid var(--line); padding-bottom: 4px; }
.hero { background: var(--tint); border-radius: var(--radius); padding: 24px; border-left: 6px solid var(--accent); }
.portrait { border: 4px solid var(--accent); }
.card { border-top: 4px solid var(--card, var(--accent)); background: var(--tint); }
.card strong { color: var(--card, var(--accent)); }
.card:hover { border-color: var(--card, var(--accent)); }
.cards li:nth-child(1) .card { --card: var(--c-indigo); }
.cards li:nth-child(2) .card { --card: var(--c-teal); }
.cards li:nth-child(3) .card { --card: var(--c-tan); }
.project {
  --pc: var(--accent);
  margin: 16px 0; padding: 20px; background: var(--tint);
  border-left: 6px solid var(--pc); border-radius: var(--radius);
}
.project + .project { border-top: 0; }
.project.p-teal { --pc: var(--c-teal); }
.project.p-tan { --pc: var(--c-tan); }
.project h2 { color: var(--pc); border: 0; }
.project .button { background: var(--pc); }
.project a:not(.button) { color: var(--pc); }
.button { background: var(--accent); }
.entry { background: var(--tint); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 12px 16px; }
.entry-title a { color: var(--accent); }
.chips li { border: 1px solid var(--line); }
.external::after { content: " \2197"; }