/* ==========================================================================
   Portfolio styles
   The look borrows from engineering drawings: paper-toned background,
   thin rules, a faint grid, monospace labels and one blue accent.
   Change the colors in :root to restyle the whole site.
   ========================================================================== */

:root {
  --paper: #f5f4ef;
  --surface: #fbfaf7;
  --ink: #16191d;
  --ink-soft: #4a5058;
  --rule: #d8d6cd;
  --grid: rgba(31, 79, 160, 0.07);
  --accent: #1f4fa0;
  --accent-soft: #e3e9f5;

  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --width: 68rem;
  --measure: 40rem; /* comfortable line length for reading */
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121417;
    --surface: #181b1f;
    --ink: #e8e6e1;
    --ink-soft: #a3a8af;
    --rule: #2c3036;
    --grid: rgba(120, 160, 230, 0.06);
    --accent: #8db0ef;
    --accent-soft: #1d2738;
  }
}

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

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: clip; /* the hero grid is full-bleed */
}

main {
  flex: 1;
  padding-block: 3rem 5rem;
}

.wrap {
  width: 100%;
  max-width: var(--width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

h1,
h2,
h3 {
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.45rem;
  margin: 2.5rem 0 0.75rem;
}

h3 {
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}

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

/* Small monospace labels, like annotations on a drawing */
.eyebrow,
.card-meta,
.back {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- Header & footer ---------- */

.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-block: 1rem;
}

.wordmark {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
}

.nav,
.contact,
.tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding-block: 0.25rem;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--ink);
}

.nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-block: 1.5rem;
}

.footer-inner p {
  margin: 0;
}

.built {
  font-family: var(--mono);
  font-size: 0.75rem;
}

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

.hero {
  position: relative;
  padding: 3.5rem 0 3rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
  isolation: isolate;
}

/* Faint graph-paper grid behind the hero */
.hero::before {
  content: "";
  position: absolute;
  inset: -3rem calc(50% - 50vw) 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(to bottom, black 40%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent);
  z-index: -1;
  pointer-events: none;
}

.tagline {
  font-size: 1.25rem;
  color: var(--ink-soft);
  margin: 0 0 1.5rem;
  max-width: var(--measure);
}

.contact-hero a {
  font-family: var(--mono);
  font-size: 0.9rem;
}

.intro {
  padding-block: 1.5rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 2.5rem 0 1.25rem;
}

.section-head h2 {
  margin: 0;
}

/* ---------- Project cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 6px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1.25rem 1.35rem 1.35rem;
  color: inherit;
  text-decoration: none;
}

.card-link p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 0.97rem;
}

.card-meta {
  margin-bottom: 0.6rem !important;
}

.card .tags {
  margin-top: auto;
}

.tags {
  gap: 0.4rem;
}

.tags li {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  background: var(--accent-soft);
  color: var(--accent);
}

.status {
  margin-left: 0.5rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--rule);
  color: var(--accent);
}

.status.solo {
  margin-left: 0;
  padding-left: 0;
  border-left: 0;
}

/* ---------- Project & content pages ---------- */

.page-head {
  margin-bottom: 2rem;
}

.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin: 0 0 1.25rem;
}

.back {
  display: inline-block;
  margin-bottom: 1.5rem;
  text-decoration: none;
}

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

/* Long-form text written in Markdown */
.prose {
  max-width: var(--measure);
}

.prose > :first-child {
  margin-top: 0;
}

.prose li + li {
  margin-top: 0.3rem;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.prose pre {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
}

.prose pre code {
  background: none;
  padding: 0;
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}

@media (prefers-reduced-motion: reduce) {
  .card {
    transition: none;
  }
  .card:hover {
    transform: none;
  }
}

/* ---------- Figures (posters, photos with captions) ---------- */

.prose figure {
  margin: 0 0 2rem;
}

.prose figure img {
  display: block;
  border: 1px solid var(--rule);
}

.prose figcaption {
  margin-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

/* A poster is wider than the text column, so let it use the full page width */
.prose figure.poster {
  width: min(100vw - 2.5rem, var(--width) - 2.5rem);
}

/* ---------- Side-by-side comparison (photo vs. CAD) ---------- */

.compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
  width: min(100vw - 2.5rem, var(--width) - 2.5rem);
  margin-bottom: 2.5rem;
}

.compare figure {
  margin: 0;
}

.compare img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Technical drawings are black on white, so give them a white backing
   (keeps them readable in dark mode too) */
figure.drawing img,
.gallery.drawings img {
  background: #fff;
  object-fit: contain;
}

.prose figure.wide {
  width: min(100vw - 2.5rem, var(--width) - 2.5rem);
}

/* ---------- Image galleries ---------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 9.5rem), 1fr));
  gap: 0.75rem;
  width: min(100vw - 2.5rem, var(--width) - 2.5rem);
  margin: 1.25rem 0 2rem;
}

.gallery a {
  display: block;
  text-decoration: none;
  color: var(--ink-soft);
}

.gallery img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--rule);
  transition: border-color 0.15s ease;
}

.gallery a:hover img {
  border-color: var(--accent);
}

.gallery span {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--mono);
  font-size: 0.75rem;
}

/* ---------- Tables ---------- */

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 1rem 0 2rem;
}

.prose th,
.prose td {
  text-align: left;
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--rule);
}

.prose th {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.bom td:first-child,
.bom td:last-child {
  font-family: var(--mono);
  width: 4rem;
}

/* ---------- Resume page ---------- */

.button {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--paper);
  background: var(--accent);
}

.button:hover {
  background: transparent;
  color: var(--accent);
}

.resume-note {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.entry {
  margin-top: 1.5rem;
}

.entry-head,
.entry-sub {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0 1rem;
}

.entry-head span,
.entry-sub span {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.entry-sub em {
  color: var(--ink-soft);
}

.entry + ul {
  margin-top: 0.5rem;
}

/* ---------- Portrait photos and videos ---------- */

.compare.tall img {
  aspect-ratio: 3 / 4;
}

.prose figure.photo,
.prose figure.video {
  margin: 1rem 0 2rem;
}

.prose figure.photo img {
  max-width: 26rem;
  width: 100%;
}

.prose figure.video video {
  display: block;
  width: 100%;
  max-width: 22rem;
  border-radius: 4px;
  background: #000;
}

.prose h3 {
  font-size: 1rem;
  font-family: var(--mono);
  font-weight: 500;
  color: var(--ink-soft);
  margin: 2rem 0 0.5rem;
}

/* ---------- 3D model viewer ---------- */

.prose figure.model {
  margin: 0 0 2.5rem;
}

.prose figure.model model-viewer {
  display: block;
  width: 100%;
  height: clamp(18rem, 55vw, 30rem);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 6px;
  cursor: grab;
}

.prose figure.model model-viewer:active {
  cursor: grabbing;
}

/* Square tiles: video next to a photo */
.compare.square img,
.compare.square video {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  width: 100%;
  max-width: none;
}

.compare figure.video {
  margin: 0;
}

.prose .compare figure.video video {
  max-width: none;
}

/* Light backdrop for dark-colored models (e.g. the black pull-up bar),
   kept light even when the site is in dark mode */
.prose figure.model.light model-viewer {
  background: radial-gradient(circle at 50% 40%, #ffffff 0%, #eceae4 100%);
  border-color: #d8d6cd;
}