/* ==========================================================================
   Layout, components, responsive rules.
   All colors/fonts/spacing come from tokens.css — don't hardcode values here.
   ========================================================================== */

/* --- Reset ---------------------------------------------------------- */

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

body,
h1, h2, h3, h4, p, ul, ol, figure, dl, dd { margin: 0; padding: 0; }

ul, ol { list-style: none; }

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

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

html {
  scroll-behavior: smooth;
  /* keep anchored sections clear of the sticky header */
  scroll-padding-top: calc(var(--header-height) + var(--space-5));
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--size-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

/* --- Shared helpers -------------------------------------------------- */

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

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-2);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius);
  transform: translateY(-200%);
  transition: transform var(--transition);
}
.skip-link:focus { transform: translateY(0); }

/* --- Header / nav ---------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
}

.site-header__inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-right: auto;
}

.nav__link {
  font-size: var(--size-small);
  letter-spacing: 0.01em;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding-block: var(--space-1);
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.nav__link:hover { color: var(--color-text); }
.nav__link.is-active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.nav__contact {
  font-size: var(--size-small);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: 999px;
  color: var(--color-text);
  transition: border-color var(--transition), background-color var(--transition);
  white-space: nowrap;
}
.nav__contact:hover,
.nav__contact.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  align-items: center;
  justify-content: center;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
}
.nav-toggle__bars::before { transform: translateY(-6px); }
.nav-toggle__bars::after  { transform: translateY(6px); }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: rotate(-45deg); }

/* --- Hero ------------------------------------------------------------ */

.hero {
  padding-block: var(--space-9) var(--space-8);
  border-bottom: 1px solid var(--color-divider);
}

.hero__eyebrow {
  font-size: var(--size-xsmall);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.hero__name {
  font-family: var(--font-serif);
  font-size: var(--size-hero);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

.hero__layout {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
}
.hero__text { flex: 1; min-width: 0; }

.hero__bio {
  margin-top: var(--space-5);
  max-width: var(--max-width-prose);
  color: var(--color-text);
}

.hero__portrait {
  flex: 0 0 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
}

.hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin-top: var(--space-6);
  font-size: var(--size-small);
}
.hero__links a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: 2px;
  transition: border-color var(--transition);
}
.hero__links a:hover { border-bottom-color: var(--color-accent); }

/* --- Sections -------------------------------------------------------- */

.section { padding-block: var(--space-8); }
.section + .section { border-top: 1px solid var(--color-divider); }

.section__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.section__number {
  font-family: var(--font-serif);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.section__title {
  font-family: var(--font-serif);
  font-size: var(--size-h2);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: var(--leading-tight);
}

/* --- Timeline (Education + Experience) -------------------------------- */

.timeline { display: flex; flex-direction: column; }

.timeline__item {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-6);
  text-align: left;
  width: 100%;
}
.timeline__item + .timeline__item { border-top: 1px solid var(--color-divider); }

/* Education entries are <button>s that open a modal */
button.timeline__item {
  border-radius: var(--radius);
  transition: background-color var(--transition);
}
button.timeline__item:hover { background: var(--color-accent-soft); }

.timeline__meta { padding-top: 2px; }

.timeline__date {
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.badge {
  display: inline-block;
  margin-top: var(--space-2);
  font-size: var(--size-xsmall);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: 2px var(--space-2);
  border-radius: var(--radius);
}
.badge--muted {
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-divider);
}

.timeline__title {
  font-size: var(--size-h3);
  font-weight: 600;
  line-height: var(--leading-tight);
}

.timeline__org {
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.timeline__note {
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  font-style: italic;
  margin-top: var(--space-1);
}

/* Lead sentence sitting above an entry's bullets. */
.timeline__lead {
  font-size: var(--size-small);
  margin-top: var(--space-3);
  max-width: var(--max-width-prose);
}

.bullets {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--size-small);
  max-width: var(--max-width-prose);
}
.bullets li {
  position: relative;
  padding-left: var(--space-4);
}
.bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 4px;
  height: 1px;
  background: var(--color-text-secondary);
}

/* Screenshots shown inline inside an experience entry. */
.timeline figure img {
  width: 100%;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
}

.figure__caption {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

.link-cue {
  display: inline-block;
  margin-top: var(--space-4);
  font-size: var(--size-small);
  color: var(--color-accent);
}
.link-cue::after {
  content: " →";
  transition: transform var(--transition);
  display: inline-block;
}
button:hover .link-cue::after { transform: translateX(3px); }

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

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: var(--space-6);
}

.card {
  display: flex;
  flex-direction: column;
  text-align: left;
  padding: var(--space-5);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
  overflow: hidden;
}

/* Sits below the text, pulled out to the card's bottom edges. */
.card__thumb {
  margin: var(--space-5) calc(-1 * var(--space-5)) calc(-1 * var(--space-5));
  border-top: 1px solid var(--color-divider);
  aspect-ratio: 3 / 2;
  background: var(--color-accent-soft);
}
.card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.card__title {
  font-size: var(--size-h3);
  font-weight: 600;
  line-height: var(--leading-tight);
}

.card__date {
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

.card__tags {
  font-size: var(--size-xsmall);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin-top: var(--space-3);
}
.card__tags .badge {
  margin-top: 0;
  margin-right: var(--space-2);
  vertical-align: middle;
}

.card__summary {
  font-size: var(--size-small);
  margin-top: var(--space-3);
  flex: 1;
}

/* --- Skills & hobbies -------------------------------------------------- */

.skill-group + .skill-group { margin-top: var(--space-6); }

.skill-group__label {
  font-size: var(--size-xsmall);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.skill-group__items { font-size: var(--size-small); }

.hobby-photos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-5);
}
.hobby-photos figure {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  overflow: hidden;
}
/* Uniform framing regardless of each photo's native aspect ratio. */
.hobby-photos img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.hobby-photos figcaption {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
}

/* --- Contact ----------------------------------------------------------- */

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-list__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--space-4);
  align-items: baseline;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--size-small);
}

.contact-list__label {
  font-size: var(--size-xsmall);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.contact-list a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: 2px;
  transition: border-color var(--transition);
  overflow-wrap: anywhere;
}
.contact-list a:hover { border-bottom-color: var(--color-accent); }

/* --- Footer ------------------------------------------------------------ */

.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-6);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-5);
  align-items: center;
  justify-content: space-between;
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}
.site-footer__name {
  font-family: var(--font-serif);
  color: var(--color-text);
}
.site-footer nav { display: flex; gap: var(--space-5); }
.site-footer a { text-decoration: none; transition: color var(--transition); }
.site-footer a:hover { color: var(--color-text); }

/* --- Modal ------------------------------------------------------------- */

.modal {
  width: min(760px, calc(100vw - 2 * var(--space-4)));
  max-height: 85vh;
  padding: 0;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-bg-raised);
  color: var(--color-text);
  overflow: hidden;
}
.modal::backdrop {
  background: rgb(26 25 22 / 0.42);
  backdrop-filter: blur(2px);
}

.modal__scroll {
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-6);
}

.modal__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--color-text-secondary);
  transition: background-color var(--transition), color var(--transition);
}
.modal__close:hover {
  background: var(--color-accent-soft);
  color: var(--color-text);
}

.modal h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  line-height: var(--leading-tight);
  padding-right: var(--space-6);
}

.modal__meta {
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.modal .bullets { margin-top: var(--space-5); }

.modal figure { margin-top: var(--space-5); }
.modal figure img {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  width: 100%;
}
.modal figcaption {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

/* Coursework list inside the education modal. */
.course-group + .course-group { margin-top: var(--space-5); }

.course-group__label {
  font-size: var(--size-xsmall);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-2);
}

.course {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-2);
  font-size: var(--size-small);
}
.course + .course { border-top: 1px solid var(--color-divider); }

.course__grade {
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
}

.modal__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.modal__stats span {
  font-size: var(--size-xsmall);
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
}

/* Prominent outbound link to a live project, shown inside a modal. */
.modal__link {
  display: block;
  margin-top: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition);
}
.modal__link:hover,
.modal__link:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}
.modal__link-label {
  display: block;
  font-weight: 600;
  font-size: var(--size-small);
  color: var(--color-text);
}
/* Call-to-action variant: accent border so it reads as an offer, not just a link. */
.modal__link--cta {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}
.modal__link--cta:hover,
.modal__link--cta:focus-visible { background: var(--color-bg-raised); }

.modal__link-note {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Callout used to explain a withheld image (e.g. patent-pending work). */
.modal__notice {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  background: var(--color-accent-soft);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.modal__notice strong { color: var(--color-text); }

.modal__hint {
  margin-top: var(--space-5);
  padding: var(--space-4);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px dashed var(--color-divider);
  border-radius: var(--radius);
}

/* --- Project cards that link to a full page ----------------------------- */

a.card { color: inherit; text-decoration: none; }
a.card:hover .link-cue::after { transform: translateX(3px); }

/* --- Project pages ------------------------------------------------------ */

.back-link {
  display: inline-block;
  font-size: var(--size-small);
  color: var(--color-accent);
  text-decoration: none;
}
.back-link::before {
  content: "← ";
  display: inline-block;
  transition: transform var(--transition);
}
.back-link:hover::before { transform: translateX(-3px); }

.project-hero {
  padding-block: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--color-divider);
}

.project-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
  margin-top: var(--space-7);
}

.project-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5vw, 3rem);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

.project-hero__lead {
  margin-top: var(--space-5);
  max-width: var(--max-width-prose);
}

.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-5);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
}
.facts dt {
  font-size: var(--size-xsmall);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}
.facts dd {
  font-size: var(--size-small);
  margin-top: var(--space-1);
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.stats span {
  font-size: var(--size-xsmall);
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
}

/* Any photo that opens in the lightbox. */
.zoomable {
  display: block;
  width: 100%;
  padding: 0;
  cursor: zoom-in;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-accent-soft);
}
.zoomable img {
  width: 100%;
  transition: transform 300ms ease;
}
.zoomable:hover img { transform: scale(1.02); }

.project-hero__media figcaption,
.viewer figcaption {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

.prose {
  max-width: var(--max-width-prose);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.prose .bullets { margin-top: 0; font-size: var(--size-body); }
.prose__subhead {
  font-size: var(--size-h3);
  font-weight: 600;
  margin-top: var(--space-4);
}
.prose--note {
  margin-top: var(--space-5);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}

/* Text beside an image or viewer. */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
}

/* "How it works" station cards. */
.station-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-5);
  counter-reset: step;
}
.station-steps li {
  counter-increment: step;
  display: flex;
  flex-direction: column;
}
.station-steps .zoomable img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.station-steps h3 {
  font-size: var(--size-h3);
  font-weight: 600;
  line-height: var(--leading-tight);
  margin-top: var(--space-4);
}
.station-steps h3::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-serif);
  font-size: var(--size-small);
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}
.station-steps h3 .badge { display: table; margin: var(--space-2) 0 0; }
.station-steps p {
  font-size: var(--size-small);
  margin-top: var(--space-2);
}
.station-steps__mine .zoomable { border: 2px solid var(--color-accent); }

/* Text-only variant: three bordered cards (until photos are added). */
.station-steps--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.station-steps--three li {
  padding: var(--space-5);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
}
.station-steps--three li.station-steps__mine { border: 2px solid var(--color-accent); }
.station-steps--three h3 { margin-top: 0; }

/* Single-column hero (no side image). */
.project-hero__layout--stacked { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }
.facts--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.project-hero__layout--stacked .project-hero__lead { max-width: 80ch; }

/* Photos cut out onto white: frame them in white instead of the accent wash. */
.zoomable--white { background: var(--color-bg-raised); }

/* Two prototype iterations side by side. */
.proto-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}
.proto-pair figcaption {
  font-size: var(--size-small);
  margin-top: var(--space-3);
  max-width: 52ch;
}
.proto-pair__label {
  display: block;
  font-size: var(--size-xsmall);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.evolution {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--size-small);
  border-left: 1px solid var(--color-divider);
  padding-left: var(--space-4);
}
.evolution span {
  display: block;
  font-size: var(--size-xsmall);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

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

.viewer__stage {
  position: relative;
  aspect-ratio: 1 / 1;
  background:
    radial-gradient(circle at 50% 40%, var(--color-bg-raised), var(--color-accent-soft));
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
}
.viewer__stage:active { cursor: grabbing; }
.viewer__stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.viewer__status {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}
.viewer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-divider);
  border-top: 0;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: var(--color-bg-raised);
}
.viewer__hint {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
}
.viewer__btn {
  font-size: var(--size-xsmall);
  color: var(--color-accent);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  transition: background-color var(--transition);
}
.viewer__btn:hover { background: var(--color-accent-soft); }

/* --- Animated station model --- */

.station {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: var(--space-5);
  align-items: start;
}

.station__viewport,
.station__side { min-width: 0; }

.station__stage {
  position: relative;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(ellipse at 50% 35%, var(--color-bg-raised), var(--color-accent-soft));
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
}
.station__stage:active { cursor: grabbing; }
.station__stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.station__loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}

.station__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-divider);
  border-top: 0;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: var(--color-bg-raised);
}
.station__status {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.station__controls { display: flex; gap: var(--space-1); flex-shrink: 0; }

.station__legend-title {
  font-size: var(--size-xsmall);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}
.station__legend {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-divider);
}
.station__legend li { border-bottom: 1px solid var(--color-divider); }
.station__legend-btn {
  width: 100%;
  text-align: left;
  font-size: var(--size-small);
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition);
}
.station__legend-btn:hover { background: var(--color-accent-soft); }
.station__legend-btn[aria-pressed="true"] {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 600;
}
.station__note {
  margin-top: var(--space-4);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  min-height: 4.5em;
}

.station__caption {
  grid-column: 1 / -1;
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
}

.station-text { margin-top: var(--space-7); }

/* Anesto device viewer controls. */
.station__stage--device { aspect-ratio: 4 / 3; }
.device-cards { margin-top: var(--space-7); }
.device-notice { max-width: var(--max-width-prose); margin: 0 0 var(--space-6); }

.slider {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: var(--size-small);
  margin-bottom: var(--space-4);
}
.slider__head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--color-text-secondary);
}
.slider output {
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}
.slider input { width: 100%; accent-color: var(--color-accent); }

.readout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-1) var(--space-3);
  font-size: var(--size-small);
  padding-block: var(--space-3);
  margin-bottom: var(--space-4);
  border-block: 1px solid var(--color-divider);
}
.readout dt { color: var(--color-text-secondary); }
.readout dd { font-variant-numeric: tabular-nums; text-align: right; }

.part-toggles { display: flex; flex-direction: column; gap: var(--space-2); }
.toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--size-small);
  cursor: pointer;
}
.toggle input { accent-color: var(--color-accent); }

/* Part colours mirror the materials in js/anesto-device.js. */
.swatch { width: 12px; height: 12px; border-radius: 2px; flex: none; }
.swatch--shell { background: var(--color-anesto-shell); }
.swatch--head  { background: var(--color-anesto-head); border: 1px solid var(--color-divider); }
.swatch--bar   { background: var(--color-anesto-bar); }
.swatch--cush  { background: var(--color-anesto-cush); }
.swatch--rest  { background: var(--color-anesto-rest); }
.swatch--pin   { background: var(--color-anesto-pin); }
.swatch--ghost { background: var(--color-text-secondary); opacity: 0.4; }
.split--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.prose__subhead--first { margin-top: 0; }

/* --- Results table --- */

.table-wrap {
  margin-top: var(--space-6);
  overflow-x: auto;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-bg-raised);
}
.results {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: var(--size-small);
}
.results th {
  text-align: left;
  font-size: var(--size-xsmall);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.results td {
  padding: var(--space-3) var(--space-4);
  vertical-align: top;
}
.results tr + tr td { border-top: 1px solid var(--color-divider); }
.results td:first-child { font-weight: 600; }

.pill {
  display: inline-block;
  font-size: var(--size-xsmall);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px var(--space-2);
  border-radius: var(--radius);
}
.pill--pass { color: var(--color-pass); background: var(--color-pass-soft); }
.pill--fail { color: var(--color-fail); background: var(--color-fail-soft); }

/* --- Embedded report --- */

.report {
  margin-top: var(--space-6);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-accent-soft);
}
.report__frame {
  display: block;
  width: 100%;
  height: min(85vh, 1100px);
}
.report__fallback {
  padding: var(--space-6);
  font-size: var(--size-small);
  color: var(--color-text-secondary);
}
.report__fallback a { color: var(--color-accent); }

.report__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.button {
  display: inline-block;
  font-size: var(--size-small);
  text-decoration: none;
  padding: var(--space-2) var(--space-5);
  border-radius: 999px;
  background: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
  transition: opacity var(--transition), background-color var(--transition);
}
.button:hover { opacity: 0.85; }
.button--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-divider);
}
.button--ghost:hover { opacity: 1; background: var(--color-accent-soft); }

.project-footer-nav {
  padding-block: var(--space-6) var(--space-8);
  border-top: 1px solid var(--color-divider);
}

/* --- Lightbox --- */

.lightbox {
  max-width: min(1100px, calc(100vw - 2 * var(--space-4)));
  max-height: calc(100vh - 2 * var(--space-4));
  padding: var(--space-3);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-bg-raised);
  overflow: hidden;
}
.lightbox::backdrop {
  background: rgb(26 25 22 / 0.72);
  backdrop-filter: blur(2px);
}
.lightbox__img {
  max-width: 100%;
  max-height: calc(100vh - 8rem);
  width: auto;
  margin-inline: auto;
  border-radius: var(--radius);
}
.lightbox__caption {
  font-size: var(--size-xsmall);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-6) 0 var(--space-1);
}
.lightbox__close { background: var(--color-bg-raised); }

/* --- Responsive -------------------------------------------------------- */

@media (max-width: 900px) {
  .project-hero__layout,
  .split {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .project-hero__media { max-width: 440px; }
  .station-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .station-steps--three { grid-template-columns: 1fr; }
  .proto-pair { grid-template-columns: 1fr; }
  .facts--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split--even { grid-template-columns: 1fr; }

  .station { grid-template-columns: 1fr; }
  .station__stage { aspect-ratio: 4 / 5; }
  .station__legend {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-2);
    border-top: 0;
  }
  .station__legend li { border-bottom: 0; }
  .station__legend-btn {
    width: auto;
    font-size: var(--size-xsmall);
    padding: var(--space-1) var(--space-3);
    border: 1px solid var(--color-divider);
    border-radius: 999px;
  }
  .station__note { min-height: 0; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; position: relative; }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--space-2) var(--gutter) var(--space-4);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
  }
  .nav.is-open { display: flex; }

  .nav__link {
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--color-divider);
  }
  .nav__link.is-active { border-bottom-color: var(--color-accent); }

  .nav__contact {
    margin-top: var(--space-4);
    text-align: center;
  }

  .hero { padding-block: var(--space-7) var(--space-7); }
  .hero__layout { flex-direction: column-reverse; gap: var(--space-5); }
  .hero__portrait { flex: 0 0 auto; width: 150px; }

  .timeline__item,
  .contact-list__row {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .modal__scroll { padding: var(--space-5); }
}