/* ==========================================================================
   Bradley Schalk — Engineering Portfolio
   Design tokens and shared components.
   Edit colors and spacing here; every page reads from this file.
   ========================================================================== */

:root {
  /* --- Surface ---------------------------------------------------------- */
  --bg:          #0F1319;
  --surface:     #161B23;
  --surface-2:   #1C232D;
  --panel-light: #EEF1F4;   /* backing for CAD/CAM screenshots (white bg) */
  --line:        #262F3B;
  --line-strong: #36404F;

  /* --- Text ------------------------------------------------------------- */
  --text:        #E8ECF1;
  --text-dim:    #A8B4C2;
  --text-faint:  #7B8896;

  /* --- Accent ----------------------------------------------------------
     One restrained accent. To switch to a UIUC orange, change these three
     values to #E84A27 / rgba(232,74,39,.14) / rgba(232,74,39,.42).        */
  --accent:      #4FA3D9;
  --accent-soft: rgba(79, 163, 217, .13);
  --accent-line: rgba(79, 163, 217, .42);

  /* --- Type ------------------------------------------------------------- */
  --font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system,
               "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo,
               Consolas, monospace;

  /* --- Layout ----------------------------------------------------------- */
  --wrap:      1180px;
  --wrap-text: 760px;
  --nav-h:     64px;
  --radius:    3px;
}

/* ==========================================================================
   Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, video { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: #F2F5F8;
}

h1 { font-size: clamp(2.1rem, 4.6vw, 3.15rem); }
h2 { font-size: clamp(1.55rem, 2.9vw, 2.05rem); }
h3 { font-size: 1.16rem; letter-spacing: -0.01em; }
h4 { font-size: 1rem; letter-spacing: 0; }

p { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1.05em; padding-left: 1.15em; }
li { margin-bottom: .42em; }
li:last-child { margin-bottom: 0; }

hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

::selection { background: var(--accent-line); color: #fff; }

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

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--accent);
  color: #06121C;
  font-weight: 600;
  border-radius: var(--radius);
  transition: top .15s ease;
}
.skip-link:focus { top: 12px; text-decoration: none; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-left: auto;
  margin-right: auto;
  margin-inline: auto;
  padding-left: 28px;
  padding-right: 28px;
  padding-inline: 28px;
}

.section { padding-block: 84px; }
.section + .section { border-top: 1px solid var(--line); }
.section--tight { padding-block: 60px; }

.section__head { margin-bottom: 42px; max-width: var(--wrap-text); }
.section__head h2 { margin-bottom: .5em; }
.section__head p { color: var(--text-dim); margin-bottom: 0; }

/* Mono label used for eyebrows, captions, and data keys.
   This is the site's main typographic signal — keep it small and spaced. */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: .705rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow--dim { color: var(--text-faint); }

.lead {
  font-size: 1.13rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.prose { max-width: var(--wrap-text); }
.prose h3 { margin: 2.1em 0 .65em; }
.prose h3:first-child { margin-top: 0; }
.prose ul { color: var(--text-dim); }
.prose p { color: var(--text-dim); }
.prose strong { color: var(--text); font-weight: 600; }

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .09em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease, color .15s ease;
}
.btn:hover { border-color: var(--accent); color: #fff; text-decoration: none; }

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06121C;
  font-weight: 600;
}
.btn--primary:hover { background: #63B2E3; border-color: #63B2E3; color: #06121C; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(15, 19, 25, .88);
  backdrop-filter: saturate(150%) blur(12px);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav__brand:hover { text-decoration: none; color: #fff; }

.nav__mark {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .04em;
}

.nav__links { display: flex; align-items: center; gap: 4px; }

.nav__link {
  padding: 8px 13px;
  border-radius: var(--radius);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: .745rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: color .15s ease, background-color .15s ease;
}
.nav__link:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav__link[aria-current="page"] { color: var(--accent); }

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
}
.nav__toggle svg { width: 19px; height: 19px; }
.nav__toggle .icon-close { display: none; }
.nav__toggle[aria-expanded="true"] .icon-open  { display: none; }
.nav__toggle[aria-expanded="true"] .icon-close { display: block; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero { padding-block: 92px 78px; }

.hero__grid {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 60px;
  align-items: start;
}

/* The hero itself is the one place the two columns should centre on each other. */
.hero .hero__grid { align-items: center; }

.hero h1 { margin-bottom: 20px; }

.hero__role {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}

.hero__lead {
  font-size: 1.1rem;
  line-height: 1.62;
  color: var(--text-dim);
  max-width: 52ch;
  margin-bottom: 32px;
}

.hero__figure {
    margin: 0;
    width: 100%;
    max-width: 320px;
    justify-self: end;
}
/* Portrait photograph, so no fixed ratio box: height follows the image and the
   frame wraps it exactly. A forced aspect-ratio would letterbox a 4:5 photo and
   leave the dark bands this used to show. */
.hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

/* ==========================================================================
   Spec block — mono key/value rows. Used on cards and project pages.
   ========================================================================== */

.specs {
  margin: 0;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .775rem;
  line-height: 1.5;
}

.specs__row {
  display: grid;
  grid-template-columns: 138px 1fr;
  gap: 18px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.specs__key {
  color: var(--text-faint);
  letter-spacing: .09em;
  text-transform: uppercase;
  font-size: .705rem;
  padding-top: 1px;
}
.specs__val { color: var(--text-dim); margin: 0; }

/* ==========================================================================
   Tags
   ========================================================================== */

.tags { display: flex; flex-wrap: wrap; gap: 7px; list-style: none; margin: 0; padding: 0; }

.tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: var(--surface);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: .69rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  margin: 0;
}
.tag--accent { border-color: var(--accent-line); background: var(--accent-soft); color: var(--accent); }

/* ==========================================================================
   Project cards
   ========================================================================== */

/* align-items: start is what keeps a short card short. Grid items stretch to
   the row height by default, which combined with `.pcard__foot { margin-top:
   auto }` was pushing the tags of shorter cards to the bottom of a tall row and
   leaving a dead band in between. Cards now size to their own content. */
.pgrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  align-items: start;
}

/* Independent column stacks.
   A plain two-column grid shares row heights across columns, so a short card
   is pinned to a row sized by its taller neighbour and the gap underneath it
   grows. Each column is its own flex stack instead, so a card only ever waits
   for the card directly above it in the SAME column. The flagship card stays a
   direct grid child and still spans both columns. */
.pcol {
  display: flex;
  flex-direction: column;
  gap: 26px;
  min-width: 0;
}

.pcard {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .18s ease, transform .18s ease;
}
.pcard:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.pcard:focus-within { border-color: var(--accent); }

.pcard__media { position: relative; background: var(--surface-2); }
.pcard__media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
/* CAD renders keep the white canvas they were exported on. A white block
   inside a dark card is intentional — it separates engineering documentation
   from site photography, and it means the geometry is shown exactly as
   exported rather than cut out of its background. */
.pcard__media--contain,
.pcard__media--cad { background: #FFFFFF; }
.pcard__media--contain img,
.pcard__media--cad img { object-fit: contain; padding: 12px; }
.pcard__media--cad img { aspect-ratio: 4 / 3; }

/* Dark `contain` — for photographs and renders whose full geometry has to
   read at card size but which carry their own background (sky, benchtop). */
.pcard__media--fit { background: var(--surface-2); }
.pcard__media--fit img { object-fit: contain; padding: 8px; }

/* Frame shapes, chosen per project to sit close to the media's own ratio so
   `contain` leaves as little dead space as possible. */
.pcard__media--cine img {
    height: 285px;
    aspect-ratio: auto;
    object-fit: contain;
    object-position: center;
}

.pcard__media--wide img {
    height: 305px;
    aspect-ratio: auto;
    object-fit: contain;
    object-position: center;
}   

/* About portrait. The source is 1244x1555 (4:5), so the frame is set to the
   same ratio: `contain` then fills it exactly with no letterboxing and no
   crop. Capped in width so it sits with the information block beneath it. */
/* The frame wraps the photograph rather than boxing it: height is driven by
   the image, so there is no dark area above or below it and no forced card
   height. The details block sits one normal gap underneath. */
.portrait { margin: 0 0 22px; }
.portrait img {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  aspect-ratio: auto;
  min-height: 0;
  object-fit: contain;
  margin-inline: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

/* Portrait + details are one compact stack pinned to the top of the column,
   level with the Background heading, rather than centred against the much
   longer text on the left. */
.about-side { align-self: start; }

.pcard__body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.pcard__body .eyebrow { margin-bottom: 10px; }

.pcard__title { font-size: 1.24rem; margin-bottom: 10px; }
.pcard__title a { color: inherit; }
.pcard__title a:hover { color: var(--accent); text-decoration: none; }
/* Make the whole card clickable while keeping a real, focusable link. */
.pcard__title a::after { content: ""; position: absolute; inset: 0; }
.pcard { position: relative; }

.pcard__desc { color: var(--text-dim); font-size: .95rem; margin-bottom: 18px; }
.pcard__foot { margin-top: auto; }

/* Flagship card: full width, media beside content */
.pcard--flagship { grid-column: 1 / -1; }

@media (min-width: 861px) {
  .pcard--flagship { flex-direction: row; align-items: stretch; }
  .pcard--flagship .pcard__media { flex: 1 1 54%; min-width: 0; }
  .pcard--flagship .pcard__media img { height: 100%; aspect-ratio: auto; min-height: 340px; }
  .pcard--flagship .pcard__media--fit img { object-fit: contain; }
  .pcard--flagship .pcard__body { flex: 1 1 46%; justify-content: center; padding: 34px 32px; }
  .pcard--flagship .pcard__title { font-size: 1.52rem; }
}

/* ==========================================================================
   Galleries
   ========================================================================== */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  gap: 20px;
}
.gallery--wide { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.gallery--parts { grid-template-columns: repeat(auto-fill, minmax(192px, 1fr)); gap: 16px; }

.shot { margin: 0; }

.shot__btn {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  cursor: zoom-in;
  overflow: hidden;
  transition: border-color .15s ease;
}
.shot__btn:hover { border-color: var(--accent); }

.shot__btn img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: opacity .15s ease;
}
.shot__btn:hover img { opacity: .9; }

/* CAD/CAM screenshots have white backgrounds — seat them on a light panel
   and contain rather than crop, so geometry is never cut off. */
.shot--cad .shot__btn { background: var(--panel-light); }
.shot--cad .shot__btn img { object-fit: contain; padding: 12px; }

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

.shot figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .735rem;
  line-height: 1.5;
  color: var(--text-faint);
}

/* ==========================================================================
   Comparison rail — CAD -> machined -> assembled, and problem -> result.
   Order carries real meaning here, so the connector is part of the content.
   ========================================================================== */

.rail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.rail__step { padding: 22px 24px; border-right: 1px solid var(--line); }
.rail__step:last-child { border-right: 0; }

.rail__num {
  display: block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 9px;
}
.rail__step h4 { margin-bottom: 6px; }
.rail__step p {
  margin: 0;
  font-size: .875rem;
  line-height: 1.55;
  color: var(--text-faint);
}

@media (max-width: 640px) {
  .rail__step { border-right: 0; border-bottom: 1px solid var(--line); }
  .rail__step:last-child { border-bottom: 0; }
}

/* ==========================================================================
   Metrics — measured results. Used where real numbers exist and matter.
   ========================================================================== */

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.metric { background: var(--bg); padding: 28px 26px; }

.metric__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4.6vw, 2.75rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin-bottom: 10px;
}

.metric__unit {
  font-size: .42em;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-left: .38em;
}

.metric__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .705rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ==========================================================================
   Video
   ========================================================================== */

.videos { display: grid; gap: 30px; }
.videos--pair { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: start; }

.vfig { margin: 0; }

.vfig video {
  width: 100%;
  height: auto;
  background: #000;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

/* The cycle and placement clips are portrait phone footage. Cap their width
   so the browser never upscales them past their native resolution. */
.vfig--portrait video { max-width: 420px; margin-inline: auto; }

.vfig figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: .755rem;
  line-height: 1.55;
  color: var(--text-faint);
}
.vfig figcaption b {
  display: block;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-size: .705rem;
  margin-bottom: 5px;
}

/* ==========================================================================
   Skills
   ========================================================================== */

.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); }

.skills__group { background: var(--bg); padding: 26px 24px; }
.skills__group h3 {
  font-family: var(--font-mono);
  font-size: .73rem;
  font-weight: 500;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.skills__group ul { list-style: none; margin: 0; padding: 0; }
.skills__group li {
  color: var(--text-dim);
  font-size: .915rem;
  padding: 5px 0;
  border-bottom: 1px solid rgba(38, 47, 59, .6);
}
.skills__group li:last-child { border-bottom: 0; }

/* ==========================================================================
   Contact
   ========================================================================== */

.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); gap: 18px; }

.contact-card {
  display: block;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color .15s ease, background-color .15s ease;
}
.contact-card:hover { border-color: var(--accent); background: var(--surface-2); text-decoration: none; }
.contact-card .eyebrow { margin-bottom: 8px; }
.contact-card span.value {
  display: block;
  font-family: var(--font-mono);
  font-size: .875rem;
  color: var(--text-dim);
  word-break: break-word;
}

/* ==========================================================================
   Page header (project + interior pages)
   ========================================================================== */

.phead { padding-block: 58px 44px; border-bottom: 1px solid var(--line); }
.phead h1 { margin-bottom: 18px; }
.phead .lead { max-width: 66ch; margin-bottom: 26px; }
.phead .tags { margin-bottom: 30px; }

.backlink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .735rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 26px;
}
.backlink:hover { color: var(--accent); text-decoration: none; }

.phero { margin: 0 0 6px; }
.phero img {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.phero--natural img {
  aspect-ratio: auto;
  max-height: 640px;
  object-fit: contain;
  background: var(--surface);
}

.phero figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .735rem;
  color: var(--text-faint);
}

.pagenav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  padding-block: 34px;
  border-top: 1px solid var(--line);
}

/* ==========================================================================
   Notes / callouts
   ========================================================================== */

.note {
  border-left: 2px solid var(--accent-line);
  background: var(--accent-soft);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .93rem;
  color: var(--text-dim);
}
.note p { margin-bottom: .6em; }
.note p:last-child { margin-bottom: 0; }

/* ==========================================================================
   Footer
   ========================================================================== */

.footer { border-top: 1px solid var(--line); padding-block: 34px; }
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: .73rem;
  letter-spacing: .06em;
  color: var(--text-faint);
}
.footer__links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__links a { color: var(--text-faint); }
.footer__links a:hover { color: var(--accent); }

/* ==========================================================================
   Lightbox
   ========================================================================== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  background: rgba(8, 11, 15, .95);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.lightbox[open], .lightbox.is-open { display: grid; grid-template-rows: auto 1fr auto; }

.lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
}

.lightbox__count {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--text-faint);
}

.lightbox__stage {
  position: relative;
  display: grid;
  place-items: center;
  padding: 22px;
  min-height: 0;
}
.lightbox__stage img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius);
}
/* White-background CAD art needs a light backing so it reads as a drawing. */
.lightbox__stage img.is-cad { background: var(--panel-light); padding: 8px; }

.lightbox__caption {
  padding: 16px 22px 26px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.55;
  color: var(--text-dim);
  max-width: 78ch;
  margin-inline: auto;
}

.lb-btn {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  padding: 0;
  background: rgba(28, 35, 45, .82);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease;
}
.lb-btn:hover { border-color: var(--accent); background: var(--surface-2); }
.lb-btn svg { width: 20px; height: 20px; }

.lightbox__prev, .lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
}
.lightbox__prev { left: 18px; }
.lightbox__next { right: 18px; }

body.lb-open { overflow: hidden; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 980px) {
    .hero__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero {
        padding-block: 62px 56px;
    }

    /* keep the portrait compact and centred once the hero stacks — a
       full-width portrait photo would be enormous on a phone */
    .hero__figure {
        max-width: 260px;
        justify-self: center;
        margin-inline: auto;
    }
}

@media (max-width: 860px) {
  .pgrid { grid-template-columns: 1fr; }
  /* display:contents lifts the cards out of their columns so they stack as a
     single list in source order, with the grid's own gap between them. */
  .pcol { display: contents; }
  .section { padding-block: 62px; }

  .nav__toggle { display: inline-grid; }
  .nav__links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 18px 18px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .nav__links.is-open { display: flex; }
  .nav__link { padding: 13px 8px; border-bottom: 1px solid var(--line); font-size: .8rem; }
  .nav__links .btn { margin-top: 14px; justify-content: center; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding-left: 20px; padding-right: 20px; padding-inline: 20px; }
  .section { padding-block: 52px; }
  .hero { padding-block: 46px 44px; }

  .specs__row { grid-template-columns: 1fr; gap: 3px; padding: 11px 0; }

  .portrait img { max-width: 240px; }
  .hero__figure { max-width: 240px; }

  /* keep every card frame landscape and modest on a narrow screen */
  .pcard__media img { aspect-ratio: 16 / 10; }
  .pcard__media--cine img {
        height: auto;
        aspect-ratio: 16 / 9;
    }

  .pcard__media--wide img {
        height: auto;
        aspect-ratio: 4 / 3;
    }

  .pcard__media--cad img {
        aspect-ratio: 4 / 3;
    }

  .gallery, .gallery--wide { grid-template-columns: 1fr; }
  .gallery--parts { grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); }

  .videos--pair { grid-template-columns: 1fr; }
  .vfig--portrait video { max-width: 100%; }

  .lightbox__prev { left: 10px; }
  .lightbox__next { right: 10px; }
  .lb-btn { width: 38px; height: 38px; }
  .lightbox__stage { padding: 12px; }

  .btn { padding: 11px 18px; font-size: .74rem; }
  .btn-row .btn { flex: 1 1 auto; justify-content: center; }
}

/* ==========================================================================
   Motion / print
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .pcard:hover { transform: none; }
}

@media print {
  .nav, .footer, .lightbox, .btn-row { display: none; }
  body { background: #fff; color: #000; }
}