/* ==========================================================================
   iangu.me — plain CSS, mobile first. No framework, no build step.
   Palette carried over from the previous site: onyx background, citrine accent.
   ========================================================================== */

:root {
  --bg: #202325;
  --surface: #282c2e;
  --surface-hover: #303538;
  --border: #3a3f42;
  --text: #f1f2f3;
  --muted: #a3a8a6;
  --accent: #e0ca3c;
  --accent-ink: #1e2021;

  --measure: 46rem;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --radius: 10px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif;
}

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

html {
  /* Never let a wide child force the whole page to scroll sideways. */
  overflow-x: hidden;
  scroll-behavior: smooth;
  /* Anchor targets clear the sticky header. */
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0 var(--gutter) env(safe-area-inset-bottom);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3 {
  line-height: 1.2;
  font-weight: 600;
  margin: 0;
  /* Long org names should wrap, not overflow, on narrow screens. */
  overflow-wrap: break-word;
}

p {
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: none;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: var(--gutter);
  top: 0.5rem;
  z-index: 10;
  padding: 0.5rem 0.875rem;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: var(--radius);
  text-decoration: none;
}

/* ── Header / nav ───────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  margin: 0 calc(var(--gutter) * -1);
  padding: 0 var(--gutter);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--measure);
  margin-inline: auto;
  min-height: 3.5rem;
}

.nav__brand {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 3vw, 1.5rem);
}

.nav__list a {
  display: inline-flex;
  align-items: center;
  /* 44px minimum touch target. */
  min-height: 2.75rem;
  padding-inline: 0.25rem;
  color: var(--muted);
  font-size: 0.9375rem;
  text-decoration: none;
}

.nav__list a:hover {
  color: var(--text);
}

/* ── Layout ─────────────────────────────────────────────────────────────── */

main {
  max-width: var(--measure);
  margin-inline: auto;
}

.section {
  padding-block: clamp(2.5rem, 7vw, 4rem);
  border-top: 1px solid var(--border);
}

.section__title {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.section__title--sub {
  margin-top: 3rem;
}

/* ── Hero ───────────────────────────────────────────────────────────────── */

.hero {
  max-width: var(--measure);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 8vw, 4.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.hero__photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.hero__name {
  font-size: clamp(2rem, 1.5rem + 2.4vw, 2.75rem);
  letter-spacing: -0.02em;
}

.hero__title {
  margin-top: 0.5rem;
  color: var(--accent);
  font-weight: 500;
}

.hero__blurb {
  margin-top: 1rem;
  color: var(--muted);
  max-width: 34rem;
}

@media (min-width: 40rem) {
  .hero {
    flex-direction: row;
    align-items: center;
    gap: 2.5rem;
  }

  .hero__photo {
    width: 200px;
    height: 200px;
  }

  .hero__body {
    min-width: 0;
  }
}

/* ── Buttons / link rows ────────────────────────────────────────────────── */

.linklist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  background: var(--surface-hover);
  border-color: var(--muted);
}

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn--primary:hover {
  background: color-mix(in srgb, var(--accent) 85%, white);
  border-color: color-mix(in srgb, var(--accent) 85%, white);
}

.icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

/* ── Roles ──────────────────────────────────────────────────────────────── */

.roles {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.role__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.125rem 1rem;
}

.role__org {
  font-size: 1.0625rem;
}

.role__when {
  color: var(--muted);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Below ~350px the longer org names wrap the date onto its own line while the
   short ones don't. Stack every date instead so the column stays consistent. */
@media (max-width: 22rem) {
  .role__head {
    display: block;
  }
}

.role__what {
  margin-top: 0.125rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.sep {
  opacity: 0.5;
  padding-inline: 0.15rem;
}

.role__points {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.role__points li {
  position: relative;
  padding-left: 1.125rem;
  font-size: 0.9375rem;
  color: var(--text);
}

.role__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── Earlier roles (collapsed) ──────────────────────────────────────────── */

.earlier {
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.earlier summary {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--muted);
  font-size: 0.9375rem;
  cursor: pointer;
  list-style: none;
}

.earlier summary::-webkit-details-marker {
  display: none;
}

.earlier summary::after {
  content: "+";
  margin-left: 0.5rem;
  color: var(--accent);
  font-size: 1.125rem;
  line-height: 1;
}

.earlier[open] summary::after {
  content: "\2212"; /* minus */
}

.earlier summary:hover {
  color: var(--text);
}

.roles--compact {
  padding-top: 0.75rem;
}

/* ── Project cards ──────────────────────────────────────────────────────── */

.cards {
  display: grid;
  /* One column on phones, two once there's room — no breakpoint needed. */
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1rem;
}

.card {
  position: relative;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: var(--muted);
}

.card:focus-within {
  border-color: var(--accent);
}

.card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.card__title {
  font-size: 1.0625rem;
}

.card__year {
  color: var(--muted);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.card__title a {
  text-decoration: none;
}

/* Stretches the title link over the whole card so the card is clickable,
   without nesting interactive elements inside an anchor. */
.card__title a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.card__desc {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.card__tech {
  margin-top: 0.875rem;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

/* ── 404 ────────────────────────────────────────────────────────────────── */

.notfound {
  max-width: var(--measure);
  margin-inline: auto;
  padding-block: clamp(4rem, 14vw, 8rem);
}

.notfound__code {
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.11em;
}

.notfound__title {
  margin-top: 0.75rem;
  font-size: clamp(1.75rem, 1.4rem + 1.8vw, 2.25rem);
  letter-spacing: -0.02em;
}

.notfound__body {
  margin-top: 0.75rem;
  color: var(--muted);
}

/* ── Footer ─────────────────────────────────────────────────────────────── */

.site-footer {
  max-width: var(--measure);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 7vw, 4rem);
  border-top: 1px solid var(--border);
}

.footer__lead {
  color: var(--muted);
  max-width: 34rem;
}

.footer__fine {
  margin-top: 2.5rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

/* ── Motion ─────────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}