/* ianhardman.com — Ian H. Hardman
   Single stylesheet for all pages. No external dependencies. */

:root {
  --ink: #14181d;
  --body: #333b45;
  --muted: #6b7683;
  --line: #e3e7ec;
  --bg: #ffffff;
  --bg-soft: #f7f9fb;
  --accent: #16537e;
  --accent-hover: #0f3d5e;
  --maxw: 900px;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f0f3f6;
    --body: #c6ced7;
    --muted: #909aa6;
    --line: #2a3138;
    --bg: #14181d;
    --bg-soft: #1b2128;
    --accent: #79b8e3;
    --accent-hover: #a5d0ef;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Layout ---------- */

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

main {
  padding: 56px 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius) 0;
  z-index: 100;
}

.skip-link:focus { left: 0; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
  flex-wrap: wrap;
}

.brand {
  font-size: 1.0625rem;
  font-weight: 640;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand,
.site-nav a { border-bottom: 0; }

.brand:hover { color: var(--accent); }

.site-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 7px;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.site-nav a:hover {
  color: var(--ink);
  background: var(--bg-soft);
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--bg-soft);
  font-weight: 600;
}

/* ---------- Typography ---------- */

h1 {
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin: 0 0 6px;
  font-weight: 660;
}

h2 {
  font-size: 1.1875rem;
  letter-spacing: -0.012em;
  color: var(--ink);
  font-weight: 640;
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

h3 {
  font-size: 1rem;
  color: var(--ink);
  font-weight: 620;
  margin: 0 0 14px;
  letter-spacing: -0.005em;
}

p { margin: 0 0 16px; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
  transition: color 0.15s ease, border-color 0.15s ease;
}

a:hover {
  color: var(--accent-hover);
  border-bottom-color: currentColor;
}

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

.lede {
  font-size: 1.0625rem;
  color: var(--body);
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

/* ---------- Intro (home) ---------- */

.intro {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 56px;
}

.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--bg-soft);
  display: block;
}

.fields {
  margin: 18px 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.fields strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- Sections ---------- */

section { margin-bottom: 48px; }

.entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry-list > li { margin-bottom: 26px; }

.entry-list > li:last-child { margin-bottom: 0; }

.entry-title {
  color: var(--ink);
  font-weight: 600;
  display: block;
  margin-bottom: 3px;
  line-height: 1.45;
}

.entry-meta {
  font-size: 0.9375rem;
  color: var(--muted);
  margin: 0;
}

.entry-meta + .entry-meta { margin-top: 2px; }

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  border-radius: 999px;
  padding: 3px 10px;
  margin-top: 8px;
}

.media-line {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 6px;
}

.media-line a { font-size: 0.875rem; }

/* Two-column definition-style blocks (education, contact, teaching) */

.stack {
  list-style: none;
  margin: 0;
  padding: 0;
}

.stack > li { margin-bottom: 14px; }

.stack > li:last-child { margin-bottom: 0; }

.address {
  font-style: normal;
  margin: 0 0 14px;
  color: var(--body);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.course {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: baseline;
}

.course-code {
  color: var(--ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.course-term {
  font-size: 0.9375rem;
  color: var(--muted);
}

.institution {
  margin-top: 36px;
}

.institution:first-of-type { margin-top: 0; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 24px;
  padding: 26px 0 40px;
  font-size: 0.875rem;
  color: var(--muted);
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer a { color: var(--muted); }

.site-footer a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  body { font-size: 16px; }

  main { padding-top: 36px; }

  h1 { font-size: 1.625rem; }

  .intro {
    grid-template-columns: 1fr;
    gap: 26px;
    margin-bottom: 40px;
  }

  .portrait {
    max-width: 220px;
    aspect-ratio: 1 / 1;
  }

  .site-header .wrap {
    min-height: 0;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .site-nav { margin-left: -12px; }
}

@media print {
  .site-header, .site-footer, .skip-link { display: none; }
  body { font-size: 11pt; color: #000; }
  a { color: #000; border: 0; }
}