/* Palette: graphite band, silver accent, warm-neutral greys */
:root {
  --bg: #f5f5f4;
  --surface: #ffffff;
  --ink: #1c1c1e;
  --muted: #5b5b60;
  --rule: #dcdcdc;
  --band: #2b2b2e;
  --band-top: #3a3a3e;
  --band-bottom: #1f1f22;
  --band-ink: #f4f4f5;
  --band-muted: #b9b9be;
  --band-accent: #a8a8ad;   /* rule and ring on the graphite band */
  --accent: #3f3f46;        /* link underlines, stars on light background */
  --chip: rgb(28 28 30 / 6%);
  --focus: #52525b;
  --logo-filter: none;      /* logo artwork is black on transparent */

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --measure: 52rem;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121214;
    --surface: #1b1b1e;
    --ink: #ececee;
    --muted: #a1a1a8;
    --rule: #2e2e33;
    --band-top: #2a2a2e;
    --band-bottom: #161618;
    --accent: #d4d4d8;
    --chip: rgb(236 236 238 / 8%);
    --focus: #d4d4d8;
    --logo-filter: invert(1);
  }
}

:root[data-theme="dark"] {
  --bg: #121214;
  --surface: #1b1b1e;
  --ink: #ececee;
  --muted: #a1a1a8;
  --rule: #2e2e33;
  --band-top: #2a2a2e;
  --band-bottom: #161618;
  --accent: #d4d4d8;
  --chip: rgb(236 236 238 / 8%);
  --focus: #d4d4d8;
  --logo-filter: invert(1);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-color: currentColor;
}

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

.wrap {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  color: var(--ink);
  z-index: 10;
}

.skip-link:focus {
  top: 1rem;
}

/* ---------- Hero ----------
   Graphite band with the portrait sitting on the silver rule on wide screens. */
.hero {
  background: var(--band);
  background-image: linear-gradient(160deg, var(--band-top), var(--band-bottom));
  color: var(--band-ink);
  border-bottom: 6px solid var(--band-accent);
  padding-block: clamp(2.25rem, 7vw, 4.5rem) 2.25rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);   /* let the logo shrink on phones */
  gap: 1.25rem;
  justify-items: start;
}

.hero-text {
  width: 100%;
}

.hero-photo {
  width: 8rem;
  aspect-ratio: 1;
  height: auto;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--band-accent);
  background: var(--band);
}

.hero-name {
  margin: 0;
  line-height: 1;
}

/* The logo artwork is black; the band is always dark, so always invert it. */
.hero-logo {
  display: block;
  width: min(24rem, 100%);
  height: auto;
  filter: invert(1);
}

.hero-role {
  margin: 1rem 0 0;
  font-size: 1.125rem;
  color: var(--band-muted);
  max-width: 34rem;
}

.hero-role a {
  color: var(--band-ink);
}

.hero a {
  text-decoration-color: var(--band-accent);
}

.hero a:focus-visible {
  outline-color: var(--band-accent);
}

.hero-links ul {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-weight: 600;
}

@media (min-width: 46rem) {
  .hero {
    padding-bottom: 2.75rem;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 13rem;
    align-items: end;
    gap: 2.5rem;
  }

  .hero-text {
    grid-column: 1;
    grid-row: 1;
  }

  .hero-photo {
    grid-column: 2;
    grid-row: 1;
    width: 13rem;
    margin-bottom: -6.5rem;            /* drop through the silver rule */
    border: 6px solid var(--bg);       /* cut-out ring in the page colour */
    box-shadow: 0 0 0 4px var(--band-accent);
    position: relative;
  }
}

/* ---------- Sections ---------- */
main {
  padding-block: 1.5rem 3rem;
}

main section {
  padding-block: 2rem 0.5rem;
}

h2 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  line-height: 1.25;
  font-weight: 750;
}

p {
  margin: 0 0 1rem;
}

.about p {
  max-width: 34rem;   /* clears the portrait on wide screens */
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0 1rem;
}

.section-intro {
  color: var(--muted);
}

.stars-total {
  margin: 0 0 0.5rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* ---------- Repository lists ----------
   One grid per list; rows use subgrid so names, stars and docs links line up
   in columns whatever the name length. */
.repo-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: max-content 1fr auto auto;
  column-gap: 1.25rem;
  border-top: 1px solid var(--rule);
}

.repo {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: subgrid;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule);
}

.repo-name {
  grid-column: 1;
  font-weight: 700;
  text-decoration: none;
}

.repo-name:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
}

.repo-desc {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
}

.repo-stars {
  grid-column: 3;
  font-variant-numeric: tabular-nums;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  text-align: right;
}

/* Star pinned left, number pinned right; all pills share the column width. */
.repo-stars:not(:empty) {
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
  padding: 0.05rem 0.6rem;
  border-radius: 999px;
  background: var(--chip);
}

.repo-stars-icon {
  opacity: 0.8;
}

.repo-docs {
  grid-column: 4;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

/* Phone: name, stars and docs on the first line, description below it. */
@media (max-width: 36rem) {
  .repo-list {
    grid-template-columns: 1fr auto auto;
    column-gap: 1rem;
  }

  .repo-name {
    grid-column: 1;
    grid-row: 1;
    font-size: 1.125rem;
  }

  .repo-stars {
    grid-column: 2;
    grid-row: 1;
  }

  .repo-docs {
    grid-column: 3;
    grid-row: 1;
  }

  .repo-desc {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-top: 0.15rem;
    color: var(--ink);
  }
}

.email {
  font-size: 1.25rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.footer {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9375rem;
  padding-block: 1.5rem;
}

.footer-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  width: 2rem;
  height: 2rem;
  filter: var(--logo-filter);
}

.footer p {
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}