/* ==========================================================================
   John Bruner — resume stylesheet
   Layout is CSS Grid + Flexbox only. No floats, no inline styles.
   Colour pairs below are chosen to clear WCAG 2.1 AA (4.5:1 body text).
   ========================================================================== */

:root {
  --ink: #1f2933; /* 14.0:1 on white  */
  --ink-muted: #52606d; /*  7.3:1 on white  */
  --accent: #0b5d8a; /*  6.5:1 on white  */
  --rule: #d9e2ec;
  --page: #f5f7fa;
  --card: #ffffff;

  --space: 1rem;
  --measure: 68ch;
  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: clamp(1rem, 4vw, 3rem);
  background-color: var(--page);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial,
    sans-serif;
  /* Fluid but bounded: never below 16px, never above ~19px. */
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.1875rem);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Skip link — visually hidden until it receives keyboard focus.
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.75rem 1rem;
  background-color: var(--accent);
  color: #ffffff;
  border-radius: 0 0 var(--radius) 0;
  z-index: 10;
}

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

/* --------------------------------------------------------------------------
   Typographic scale
   -------------------------------------------------------------------------- */
h1,
h2,
h3 {
  line-height: 1.2;
  color: var(--ink);
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 1.5rem + 2.2vw, 3rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--rule);
  margin-bottom: var(--space);
}

h3 {
  font-size: 1.125rem;
}

p {
  margin: 0 0 0.75rem;
  max-width: var(--measure);
}

a {
  color: var(--accent);
}

a:hover {
  text-decoration: none;
}

/* A visible focus ring on every interactive element is an AA requirement. */
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.resume-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-width: 72rem;
  margin: 0 auto var(--space);
  padding: clamp(1.25rem, 3vw, 2rem);
  background-color: var(--card);
  border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: 4px solid var(--accent);
}

.role {
  margin: 0;
  font-size: 1.125rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.resume-header address {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-top: 0.5rem;
  font-style: normal; /* <address> italicises by default */
  color: var(--ink-muted);
}

.resume-header address p {
  margin: 0;
}

/* --------------------------------------------------------------------------
   Section navigation
   -------------------------------------------------------------------------- */
nav {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.75rem clamp(1.25rem, 3vw, 2rem);
  background-color: var(--card);
  border-bottom: 1px solid var(--rule);
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

nav a {
  font-weight: 600;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Main grid: content column + skills sidebar
   -------------------------------------------------------------------------- */
main {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  max-width: 72rem;
  margin: 0 auto;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background-color: var(--card);
  border-radius: 0 0 var(--radius) var(--radius);
}

@media (min-width: 52rem) {
  main {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    align-items: start;
  }

  #objective,
  #experience,
  #education,
  #references {
    grid-column: 1;
  }

  /* Sidebar occupies the second column alongside all four content blocks. */
  #skills {
    grid-column: 2;
    grid-row: 1 / span 4;
  }
}

/* --------------------------------------------------------------------------
   Experience & education entries
   -------------------------------------------------------------------------- */
article {
  padding-bottom: 1.25rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule);
}

article:last-of-type {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.employer {
  margin: 0.15rem 0 0;
  font-weight: 600;
  color: var(--ink-muted);
}

.dates {
  margin: 0 0 0.6rem;
  font-size: 0.9375rem;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

article ul {
  margin: 0;
  padding-left: 1.2rem;
  max-width: var(--measure);
}

article li {
  margin-bottom: 0.35rem;
}

/* --------------------------------------------------------------------------
   Skills sidebar
   -------------------------------------------------------------------------- */
#skills {
  padding: 1.25rem;
  background-color: var(--page);
  border-radius: var(--radius);
}

#skills dl {
  margin: 0 0 1.25rem;
}

#skills dt {
  font-weight: 700;
  margin-top: 0.75rem;
}

#skills dt:first-child {
  margin-top: 0;
}

#skills dd {
  margin: 0.15rem 0 0;
  color: var(--ink-muted);
}

#skills ul {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
  color: var(--ink-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
footer {
  max-width: 72rem;
  margin: var(--space) auto 0;
  padding: var(--space) clamp(1.25rem, 3vw, 2rem);
  font-size: 0.875rem;
  color: var(--ink-muted);
}

footer p {
  margin: 0 0 0.35rem;
  max-width: var(--measure);
}

/* --------------------------------------------------------------------------
   Respect a reduced-motion preference (WCAG 2.1 success criterion 2.3.3).
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* --------------------------------------------------------------------------
   Print: a resume gets printed. Drop the chrome, keep the content.
   -------------------------------------------------------------------------- */
@media print {
  body {
    padding: 0;
    background-color: #ffffff;
    font-size: 11pt;
  }

  nav,
  .skip-link {
    display: none;
  }

  main {
    grid-template-columns: 1fr;
    padding: 0;
  }

  #skills {
    grid-column: 1;
    grid-row: auto;
    background-color: transparent;
    padding: 0;
  }

  article {
    break-inside: avoid;
  }
}