/* ==========================================================================
   Aaron Beaudoin portfolio
   Colors are checked for WCAG 2.2 AA (most pass AAA). Ratios are against
   --panel unless noted. Change the theme here.
   ========================================================================== */

:root {
  --bg: #0b0d14;            /* page base under the starfield */
  --panel: #151a24;         /* text always sits on this, never on the photo */
  --panel-raised: #1c2230;
  --line: #2c3444;          /* decorative borders only */
  --line-strong: #6b7488;   /* borders that identify a control: 3.9:1 */
  --text: #e8eaf0;          /* 14.5:1 */
  --text-muted: #a9b1c2;    /* 8.1:1 */
  --accent: #40b8c4;        /* teal, from the ATB logo: 7.4:1 */
  --accent-strong: #7fd8e0; /* hover: 10.6:1 */
  --on-accent: #0b0d14;     /* text on teal: 8.2:1 */
  --warn-bg: #3a2a00;       /* draft-only placeholder highlights */
  --warn-text: #ffd27a;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 0.75rem;
  --wrap: 72rem;
  --prose: 42rem;
  --gutter: clamp(1rem, 4vw, 2rem);
  --space: clamp(2.5rem, 6vw, 4.5rem);
}

/* ---- Base ---------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1rem;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1.0625rem;      /* rem-based so the user's text-size setting applies */
  line-height: 1.65;
}

/* Starfield (Aaron's photo) on a fixed layer, so it doesn't jank on mobile. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(rgb(11 13 20 / 0.35), rgb(11 13 20 / 0.6)),
    image-set(url("/img/starfield-2400.webp") type("image/webp"), url("/img/starfield-2400.jpeg") type("image/jpeg")) center / cover no-repeat,
    var(--bg);
}
@media (max-width: 48rem) {
  body::before {
    background:
      linear-gradient(rgb(11 13 20 / 0.35), rgb(11 13 20 / 0.6)),
      image-set(url("/img/starfield-1200.webp") type("image/webp"), url("/img/starfield-1200.jpeg") type("image/jpeg")) center / cover no-repeat,
      var(--bg);
  }
}

main { flex: 1; }
main:focus { outline: none; }

img, picture, video, svg { display: block; max-width: 100%; height: auto; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.6em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2rem); letter-spacing: -0.01em; margin-top: 2em; }
h3 { font-size: 1.25rem; margin-top: 1.6em; }
p, ul, ol, figure, blockquote { margin: 0 0 1.1em; }

a { color: var(--accent); text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; }
a:hover { color: var(--accent-strong); text-decoration-thickness: 0.14em; }

/* Visible keyboard focus everywhere (WCAG 2.4.7 / 2.4.13). */
:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -100%;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  border-radius: 0 0 0.5rem 0.5rem;
}
.skip-link:focus { top: 0; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---- Header and footer --------------------------------------------------- */

.site-header {
  background: rgb(11 13 20 / 0.92);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  padding-block: 0.75rem;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--text);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}
.wordmark:hover { color: var(--accent-strong); }
.wordmark__logo, .hero__logo { mix-blend-mode: screen; } /* logo is on black; screen blending drops the black */
.wordmark__logo { width: 4rem; height: auto; margin-right: 0.6rem; }
.hero__logo { width: min(26rem, 80%); height: auto; margin: 0 0 1.5rem -0.5rem; }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;      /* 44px targets, above the 24px minimum */
  padding-inline: 0.75rem;
  color: var(--text);
  text-decoration: none;
  border-radius: 0.5rem;
}
.nav a:hover { color: var(--accent-strong); background: var(--panel); }
.nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4em;
}

.site-footer {
  margin-top: var(--space);
  background: rgb(11 13 20 / 0.92);
  border-top: 1px solid var(--line);
  font-size: 0.9375rem;
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem 2rem;
  padding-block: 1.25rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: 0.5rem;
  overflow-wrap: anywhere;
}
.footer-links li:first-child a { padding-left: 0; }
.footer-meta { margin: 0; color: var(--text-muted); }

/* ---- Panels and page layout --------------------------------------------- */

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.page-head { padding-block: var(--space) 1.5rem; }
/* Text that sits on the starfield: a soft shadow keeps contrast even over the brightest stars. */
.page-head, .hero { text-shadow: 0 0 0.35em rgb(11 13 20 / 0.95), 0 1px 2px rgb(11 13 20 / 0.95); }
.hero .button { text-shadow: none; }
.page-head .lede { font-size: 1.1875rem; color: var(--text-muted); max-width: var(--prose); }
.page-head h1 { margin-bottom: 0.4em; }

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.prose { max-width: var(--prose); }
.prose > :first-child { margin-top: 0; }
.prose blockquote {
  margin-inline: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
  color: var(--text);
}

.stack > * + * { margin-top: 1.5rem; }

/* ---- Figures ------------------------------------------------------------- */

figure { margin-inline: 0; }
.figure {
  margin-block: 2rem;
}
.figure picture, .figure img { border-radius: 0.5rem; }
.figure--light img { background: #fff; }
figcaption {
  margin-top: 0.75rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.55;
}
figcaption strong { color: var(--text); }

.figure-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---- Cards --------------------------------------------------------------- */

.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.card:hover { border-color: var(--line-strong); background: var(--panel-raised); }
.card:focus-within { outline: 3px solid var(--accent-strong); outline-offset: 3px; }
.card__media { aspect-ratio: 16 / 10; background: var(--bg); overflow: hidden; }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__media--contain img { object-fit: contain; }
.card__media--light { background: #fff; padding: 1rem; }
.card__media--top img { object-position: center 20%; }
.card__missing { margin: 0; padding: 1rem; }
.card__body { display: flex; flex-direction: column; gap: 0.5rem; padding: 1.25rem 1.25rem 1.5rem; flex: 1; }
.card__title { margin: 0; font-size: 1.25rem; }
.card__title a { color: var(--text); text-decoration: none; }
/* Whole card is clickable through the title link (one link, one tab stop). */
.card__title a::after { content: ""; position: absolute; inset: 0; }
.card__title a:focus-visible { outline: none; }
.card__text { margin: 0; color: var(--text-muted); }
.card__meta { margin: 0; color: var(--text-muted); font-size: 0.9375rem; }

.card--feature { display: grid; grid-template-columns: 1fr; }
@media (min-width: 52rem) {
  .card--feature { grid-template-columns: 1.3fr 1fr; }
  .card--feature .card__media { aspect-ratio: auto; min-height: 20rem; }
  .card--feature .card__body { justify-content: center; padding: 2rem; }
}

/* Status label: text, not color alone. */
.status {
  order: -1;                /* shown above the title, read after it */
  align-self: flex-start;
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.status--complete { color: var(--accent); }
.status--progress { color: var(--warn-text); }
.status--other { color: var(--text-muted); }

/* ---- Buttons ------------------------------------------------------------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.5rem 1.25rem;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  text-decoration: none;
  border-radius: 0.5rem;
}
.button:hover { background: var(--accent-strong); color: var(--on-accent); }
.button--ghost { background: transparent; color: var(--accent); border: 2px solid var(--accent); }
.button--ghost:hover { background: var(--panel-raised); color: var(--accent-strong); }
.button-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1rem; }

/* ---- Home ---------------------------------------------------------------- */

.hero { padding-block: clamp(3rem, 10vw, 7rem) var(--space); }
.hero h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); margin-bottom: 0.3em; }
.hero__line { font-size: clamp(1.1875rem, 2.6vw, 1.5rem); max-width: 38rem; margin: 0; }

.section { padding-block: 0 var(--space); }
.section__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 0.5rem 1rem; margin-bottom: 1.25rem; }
.section__head h2 { margin: 0; }

/* ---- Case study ---------------------------------------------------------- */

.cs-hero { margin: 0 0 1.5rem; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.cs-meta {
  display: grid;
  gap: 1rem 2rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  margin: 0 0 1.5rem;
}
.cs-meta dt { color: var(--accent); font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.cs-meta dd { margin: 0.25rem 0 0; }
.cs-layout { display: grid; gap: 2rem; }
@media (min-width: 64rem) {
  .cs-layout { grid-template-columns: 13rem 1fr; align-items: start; }
  .cs-toc { position: sticky; top: 1rem; }
}
.cs-toc ol { margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.cs-toc li { counter-increment: toc; }
.cs-toc a { display: flex; gap: 0.5rem; min-height: 2.25rem; align-items: center; color: var(--text-muted); text-decoration: none; }
.cs-toc a::before { content: counter(toc, decimal-leading-zero); color: var(--accent); font-size: 0.8125rem; font-variant-numeric: tabular-nums; }
.cs-toc a:hover { color: var(--accent-strong); }
.cs-toc h2 { font-size: 0.875rem; margin: 0 0 0.5rem; color: var(--text); letter-spacing: 0.06em; text-transform: uppercase; }
.cs-body > section + section { margin-top: 3.5rem; padding-top: 3rem; border-top: 1px solid var(--line); }
.cs-body section > h2 { margin-top: 0; }
.cs-body h2 .eyebrow { display: block; margin-bottom: 0.4rem; }

.callout { background: var(--panel-raised); border-left: 4px solid var(--accent); border-radius: 0 0.5rem 0.5rem 0; padding: 1rem 1.25rem; margin: 1.5rem 0; }
.callout > :last-child { margin-bottom: 0; }
.callout--progress { border-left-color: var(--warn-text); }
.callout__title { font-weight: 700; margin-bottom: 0.4rem; }

.quote-list { display: grid; gap: 1rem; margin: 1.5rem 0; padding: 0; list-style: none; }
.quote-list blockquote { margin: 0; padding: 1rem 1.25rem; background: var(--panel-raised); border-left: 3px solid var(--accent); border-radius: 0 0.5rem 0.5rem 0; }
.quote-list blockquote p { margin: 0 0 0.4rem; font-size: 1.0625rem; }
.quote-list cite { color: var(--text-muted); font-style: normal; font-size: 0.9375rem; }

.persona-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); margin: 1.5rem 0; }
.persona { background: var(--panel-raised); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; }
.persona h3 { margin-top: 0; }
.persona h4 { font-size: 0.875rem; margin: 1rem 0 0.25rem; color: var(--accent); letter-spacing: 0.04em; text-transform: uppercase; }
.persona ul { padding-left: 1.1rem; margin-bottom: 0; }

.compare { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); margin: 1.5rem 0; padding: 0; list-style: none; }
.compare .figure { margin: 0; }
.figure--phone img { max-width: 20rem; margin-inline: auto; border-radius: 1.25rem; border: 1px solid var(--line); }
.compare .figure--phone img { max-width: 100%; }
.figure__full { display: inline-flex; align-items: center; min-height: 1.5rem; margin-left: 0.5rem; }

.change-list { list-style: none; padding: 0; margin: 1.5rem 0; display: grid; gap: 1rem; }
.change-list li { background: var(--panel-raised); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.25rem; }
.change-list .change__what { font-weight: 700; margin: 0 0 0.25rem; }
.change-list p { margin: 0 0 0.35rem; }
.change-list .change__why { color: var(--text-muted); font-size: 0.9375rem; margin: 0; }

.table-wrap { overflow-x: auto; margin: 1.5rem 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--accent); font-size: 0.8125rem; letter-spacing: 0.04em; text-transform: uppercase; }

/* ---- Research ------------------------------------------------------------ */

.paper + .paper { margin-top: 2.5rem; }
.paper h2 { margin-top: 0; }
.byline { color: var(--text-muted); margin-top: -0.25rem; }
.references { padding-left: 1.25rem; color: var(--text-muted); font-size: 0.9375rem; }

/* ---- Draft-only placeholders (never in the live build) ------------------- */

.todo, .proposed {
  background: var(--warn-bg);
  color: var(--warn-text);
  outline: 2px dashed var(--warn-text);
  outline-offset: 2px;
  border-radius: 4px;
  padding: 0 0.25rem;
}
.proposed { color: var(--text); }
.proposed__label { color: var(--warn-text); font-weight: 700; font-size: 0.8125rem; }
.draft-banner {
  margin: 0;
  padding: 0.5rem var(--gutter);
  background: var(--warn-bg);
  color: var(--warn-text);
  text-align: center;
  font-weight: 700;
}

/* ---- User preferences ---------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Windows high-contrast / forced colors: keep borders and focus visible. */
@media (forced-colors: active) {
  body::before { display: none; }
  .card, .panel, .status, .button { border: 1px solid CanvasText; }
  .card:focus-within { outline: 3px solid Highlight; }
}

@media print {
  body::before, .site-header nav, .skip-link { display: none; }
  body { background: #fff; color: #000; }
  .panel, .card { background: #fff; border-color: #999; }
  a { color: #000; }
}

/* ---- About --------------------------------------------------------------- */

.about__intro { display: grid; gap: 1.5rem 2.5rem; align-items: start; margin-bottom: 2.5rem; }
@media (min-width: 48rem) { .about__intro { grid-template-columns: 16rem 1fr; } }
.about__photo img { width: 100%; max-width: 16rem; border-radius: var(--radius); border: 1px solid var(--line); }
.about h2 { margin-top: 2.5rem; }
.timeline { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.25rem; }
.timeline li { border-left: 3px solid var(--accent); padding-left: 1rem; }
.timeline p { margin: 0 0 0.25rem; }
.timeline__when { color: var(--accent); font-size: 0.875rem; font-weight: 700; letter-spacing: 0.04em; }
.timeline__what { color: var(--text-muted); }
.skills { display: grid; gap: 1rem; margin: 0; }
.skills dt { font-weight: 700; color: var(--text); }
.skills dd { margin: 0.2rem 0 0; color: var(--text-muted); }

/* ↗ after links that open in a new tab */
.ext-icon { display: inline-block; margin-left: 0.2em; font-size: 0.85em; line-height: 1; text-decoration: none; }