/* ═══════════════════════════════════════════════════════════
   PLATZ — shared stylesheet
   Covers: homepage · division indexes · architect projects
           · matter objects (genealogy rail)
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg:           #000001;
  --surface:      #040406;
  --ink:          #f7f4ed;
  --muted:        rgba(247,244,237,.44);
  --faint:        rgba(247,244,237,.13);
  --logo-w:       clamp(44px, min(13vw, calc(100vh * .1933)), 260px);
  --content-left: var(--logo-w);
  --edge:         clamp(24px, 5vw, 80px);
  --gap:          clamp(8px, 1.2vw, 16px);
  --header-h:     52px;
  --essay-max:    680px;
  --rail-w:       clamp(188px, 18vw, 268px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: clamp(13px, 1.1vw, 16px);
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; image-rendering: high-quality; }
button { font-family: inherit; background: none; border: 0; cursor: pointer; color: inherit; }

/* quiet dark panel instead of a broken-image icon */
.img-cell, .gen-thumb, .hero-bg, .card-media { background: var(--surface); }
img.img-missing { opacity: 0; }

/* ─── progress ─── */
#prog {
  position: fixed; top: 0; left: 0;
  height: 1.5px; width: 0%;
  background: var(--ink); z-index: 9999; opacity: .5;
  transition: width .1s linear;
}

/* ─── side logo — the fixed brand object ─── */
.side-logo {
  position: fixed; top: 0; left: 0;
  width: var(--logo-w); height: auto;
  z-index: 2147483647;
  pointer-events: none; overflow: visible; display: block;
  mix-blend-mode: screen;
}
.side-logo img {
  width: 100%; height: auto;
  max-height: 100vh; max-height: 100dvh;
  object-fit: contain; object-position: left top;
  opacity: .97;
}

/* ─── header + division switch ─── */
header {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--header-h); z-index: 1000;
  display: flex; align-items: center;
  gap: clamp(16px, 2.6vw, 40px);
  padding-left: calc(var(--content-left) + 4px);
  padding-right: var(--edge);
  background: linear-gradient(to bottom, rgba(0,0,1,.9) 0%, transparent 100%);
}
.header-home {
  font-size: .6rem; letter-spacing: .28em; text-transform: uppercase;
  color: var(--muted); transition: color .3s; white-space: nowrap;
}
.header-home:hover { color: var(--ink); }
.header-home.with-arrow::before { content: '← '; }

.division-switch { display: flex; gap: 18px; }
.division-switch a {
  position: relative; padding-bottom: 3px;
  font-size: .58rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--faint); transition: color .35s; white-space: nowrap;
}
.division-switch a:hover { color: var(--muted); }
.division-switch a.is-active { color: var(--ink); }
.division-switch a.is-active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--ink);
}
.division-switch a + a::before {
  content: ''; position: absolute; left: -9px; top: .1em; bottom: .3em;
  width: 1px; background: var(--faint);
}
.header-project {
  margin-left: auto;
  font-size: .6rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--faint); white-space: nowrap;
}

/* ─── main ─── */
main { padding-left: var(--content-left); }
section { position: relative; }

/* ─── hero (shared) ─── */
.hero {
  position: relative; overflow: hidden;
  height: 100vh; min-height: 560px;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding-bottom: clamp(52px, 8vh, 110px);
  padding-right: var(--edge);
}
.hero.full { margin-left: calc(-1 * var(--content-left)); padding-left: var(--content-left); }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img, .hero-bg video {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  filter: grayscale(1) brightness(.34) contrast(1.12);
  transform: scale(1.02);
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to top, rgba(0,0,1,.82) 0%, rgba(0,0,1,.08) 60%, transparent 100%);
}
.hero-content { position: relative; z-index: 2; }
.hero-eyebrow {
  font-size: .6rem; letter-spacing: .32em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 1.1rem;
}
.hero-title {
  font-size: clamp(2.8rem, 7vw, 6.5rem);
  font-weight: 300; letter-spacing: -.02em; line-height: 1.0;
}
.hero-title.xl { font-size: clamp(3.2rem, 9vw, 8rem); }
.hero-subtitle {
  margin-top: 1.2rem;
  font-size: clamp(.75rem, 1vw, .9rem);
  color: var(--muted); font-style: italic; letter-spacing: .06em;
}
.hero-logo-wrap { margin-top: clamp(22px, 3vh, 40px); }
.hero-logo-wrap img {
  height: clamp(15px, 2vh, 22px); width: auto; opacity: .34;
  object-fit: contain;
  transform: rotate(90deg); transform-origin: left center;
}

/* ─── section label / heading ─── */
.section-label {
  font-size: .58rem; letter-spacing: .34em; text-transform: uppercase;
  color: var(--faint); margin-bottom: clamp(20px, 3vh, 40px);
}
.section-title {
  font-size: clamp(1.9rem, 4.4vw, 3.6rem);
  font-weight: 300; letter-spacing: -.015em; line-height: 1.08;
}
.section-desc {
  margin-top: 1.2rem; max-width: 520px;
  font-size: clamp(.85rem, 1.15vw, 1rem);
  color: var(--muted); font-style: italic; line-height: 1.75;
}

/* ─── statement ─── */
#statement {
  padding: clamp(90px, 14vh, 175px) var(--edge) clamp(80px, 12vh, 150px) 0;
  max-width: calc(var(--essay-max) + var(--content-left) + 140px);
}
.statement-body p {
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  font-weight: 300; line-height: 1.75;
}
.statement-body p + p { margin-top: 1.5em; color: var(--muted); }
.value-row {
  display: flex; gap: clamp(24px, 5vw, 76px); flex-wrap: wrap;
  margin-top: clamp(40px, 6vh, 76px);
}
.value-item {
  font-size: .62rem; letter-spacing: .3em; text-transform: uppercase;
  color: var(--muted);
}

/* ─── horizontal carousel ─── */
.carousel-wrap {
  overflow-x: auto; overflow-y: hidden;
  padding-bottom: 1.4rem;
  scrollbar-width: none;
}
.carousel-wrap::-webkit-scrollbar { display: none; }
.carousel-track {
  display: flex; gap: var(--gap); align-items: flex-end;
  padding-right: var(--edge); width: max-content;
}
.carousel-item { flex: 0 0 auto; }
.carousel-item .card-media { overflow: hidden; }
.carousel-item.tall .card-media { width: clamp(210px, 24vw, 380px); aspect-ratio: 3/4; }
.carousel-item.wide .card-media { width: clamp(280px, 34vw, 540px); aspect-ratio: 16/10; }
.carousel-item.sq   .card-media { width: clamp(210px, 24vw, 380px); aspect-ratio: 1/1; }
.item-caption {
  display: block; margin-top: .8rem;
  font-size: .56rem; letter-spacing: .24em; text-transform: uppercase;
  color: var(--faint);
}

/* ─── project grid + cards ─── */
.proj-grid {
  display: grid; gap: clamp(14px, 2vw, 30px);
  grid-template-columns: repeat(auto-fill, minmax(clamp(200px, 24vw, 330px), 1fr));
}
.proj-grid.two { grid-template-columns: repeat(auto-fill, minmax(clamp(240px, 34vw, 480px), 1fr)); }
.card-media { display: block; overflow: hidden; aspect-ratio: 3/4; position: relative; }
.proj-grid.two .card-media { aspect-ratio: 4/5; }
.card-media img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  filter: grayscale(1) brightness(.5) contrast(1.06);
  transform: scale(1.015);
  transition: filter 1.1s cubic-bezier(.16,1,.3,1), transform 1.1s cubic-bezier(.16,1,.3,1);
}
.proj-card:hover .card-media img, .carousel-item:hover .card-media img {
  filter: grayscale(0) brightness(.9) contrast(1);
  transform: scale(1.08);
}
.proj-card, .carousel-item { display: block; }
.card-info { display: block; margin-top: .9rem; }
.card-name {
  display: block;
  font-size: clamp(.85rem, 1.1vw, 1rem); font-weight: 300;
  transition: color .35s;
}
.card-type {
  display: block; margin-top: .25rem;
  font-size: .56rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--faint);
}
.card-gen {
  display: block; margin-top: .3rem;
  font-size: .58rem; font-style: italic; color: var(--muted);
}

/* ─── division block (homepage) ─── */
.division {
  padding: clamp(70px, 10vh, 130px) var(--edge) clamp(70px, 10vh, 130px) 0;
  border-top: 1px solid var(--faint);
}
.division-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
  margin-bottom: clamp(30px, 5vh, 60px);
}
.division-enter {
  font-size: .58rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--muted); transition: color .35s; white-space: nowrap;
}
.division-enter:hover { color: var(--ink); }

/* ─── essay ─── */
.essay {
  position: relative;
  padding-top: clamp(84px, 12vh, 150px);
  padding-bottom: clamp(70px, 10vh, 130px);
  padding-right: var(--edge);
  max-width: calc(var(--essay-max) + var(--content-left));
}
.essay-label {
  font-size: .58rem; letter-spacing: .34em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 2.6rem;
}
.essay-body p {
  font-size: clamp(.95rem, 1.4vw, 1.2rem);
  font-weight: 300; line-height: 1.82;
}
.essay-body p + p { margin-top: 1.7em; }
.essay-body em { font-style: italic; color: var(--muted); }
.essay-pull {
  margin-top: clamp(44px, 6vh, 80px);
  padding-left: clamp(20px, 2.5vw, 40px);
  border-left: 1px solid var(--muted);
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  font-weight: 300; font-style: italic; line-height: 1.5;
  max-width: 540px;
}

/* ─── spec table ─── */
.spec {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: clamp(16px, 2.4vw, 38px);
  margin-top: clamp(38px, 6vh, 70px);
  padding: clamp(20px, 3.4vh, 38px) 0;
  border-top: 1px solid var(--faint);
  border-bottom: 1px solid var(--faint);
}
.spec-k {
  font-size: .52rem; letter-spacing: .3em; text-transform: uppercase;
  color: var(--faint); margin-bottom: .55rem;
}
.spec-v {
  font-size: clamp(.78rem, 1.02vw, .92rem);
  font-weight: 300; color: var(--muted); line-height: 1.5;
}
.spec-v.accent { color: var(--ink); font-style: italic; }

/* ─── image grids ─── */
.images {
  padding-top: clamp(56px, 8vh, 105px);
  padding-bottom: clamp(56px, 8vh, 105px);
  padding-right: var(--edge);
}
.img-grid { display: grid; gap: var(--gap); }
.img-grid.col-2   { grid-template-columns: 1fr 1fr; }
.img-grid.col-3   { grid-template-columns: 1fr 1fr 1fr; }
.img-grid.mixed   { grid-template-columns: 2fr 1fr; }
.img-grid.mixed-r { grid-template-columns: 1fr 2fr; }
.img-cell { position: relative; overflow: hidden; }
.img-cell.tall { aspect-ratio: 3/4; }
.img-cell.wide { aspect-ratio: 16/9; }
.img-cell.sq   { aspect-ratio: 1/1; }
.img-cell.rect { aspect-ratio: 4/3; }
.img-cell img, .img-cell video {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  filter: grayscale(1) brightness(.5) contrast(1.06);
  transform: scale(1.015);
  transition: filter 1.1s cubic-bezier(.16,1,.3,1), transform 1.1s cubic-bezier(.16,1,.3,1);
}
.img-cell:hover img, .img-cell:hover video {
  filter: grayscale(0) brightness(.88) contrast(1);
  transform: scale(1.08);
}
.img-stack { display: flex; flex-direction: column; gap: var(--gap); }
.img-stack .img-cell { flex: 1; }

/* ─── next project ─── */
.next-project {
  padding: clamp(30px, 4.5vh, 56px) var(--edge) clamp(60px, 9vh, 110px) 0;
  border-top: 1px solid var(--faint);
  display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap;
}
.next-link {
  font-size: .58rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--muted); transition: color .35s;
}
.next-link:hover { color: var(--ink); }
.next-link .next-sub {
  display: block; margin-top: .5em;
  font-size: .8rem; letter-spacing: .01em; text-transform: none;
  font-style: italic; color: var(--faint);
}
.next-link.to-right { margin-left: auto; text-align: right; }

/* ═══════════════════════════════════════════════════════════
   MATTER — object pages with a genealogy rail
   body class="object-page"
   ═══════════════════════════════════════════════════════════ */

body.object-page main   { padding-right: var(--rail-w); }
body.object-page footer { padding-right: calc(var(--rail-w) + var(--edge)); }

.genealogy {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: var(--rail-w);
  z-index: 900;
  display: flex;
  overflow-y: auto; scrollbar-width: none;
  border-left: 1px solid var(--faint);
  padding: calc(var(--header-h) + clamp(14px, 2vh, 26px))
           clamp(16px, 1.6vw, 26px)
           clamp(22px, 4vh, 44px);
  background: linear-gradient(to right,
              rgba(0,0,1,0) 0%, rgba(0,0,1,.9) 18%, rgba(0,0,1,.97) 46%);
  backdrop-filter: blur(3px);
}
.genealogy::-webkit-scrollbar { display: none; }
.gen-inner { margin: auto 0; width: 100%; }

.gen-rail-label {
  font-size: .54rem; letter-spacing: .34em; text-transform: uppercase;
  color: var(--faint); margin-bottom: clamp(18px, 3vh, 34px);
}

.gen-list { list-style: none; position: relative; }
.gen-list::before {
  content: ''; position: absolute;
  left: 4px; top: 10px; bottom: 4px; width: 1px;
  background: linear-gradient(to bottom,
              var(--faint) 0%, var(--faint) 72%, transparent 100%);
}

.gen-node {
  position: relative; display: block; width: 100%; text-align: left;
  padding: clamp(9px, 1.4vh, 15px) 0 clamp(9px, 1.4vh, 15px) 24px;
  color: var(--muted);
  transition: color .5s cubic-bezier(.16,1,.3,1);
}
.gen-node::before {
  content: ''; position: absolute;
  left: 0; top: calc(clamp(9px, 1.4vh, 15px) + .34em);
  width: 9px; height: 9px;
  border: 1px solid var(--muted); background: var(--bg);
  transition: background .5s, border-color .5s, transform .5s;
}
.gen-node:hover { color: var(--ink); }
.gen-node:hover::before { border-color: var(--ink); }
.gen-node.is-active { color: var(--ink); }
.gen-node.is-active::before {
  background: var(--ink); border-color: var(--ink); transform: scale(1.08);
}

.gen-num {
  display: block;
  font-size: .54rem; letter-spacing: .3em; text-transform: uppercase;
  color: var(--faint); transition: color .5s;
}
.gen-node.is-active .gen-num, .gen-node:hover .gen-num { color: var(--muted); }
.gen-name {
  display: block; margin-top: .34em;
  font-size: clamp(.82rem, 1.05vw, .95rem); font-weight: 300; color: inherit;
}
.gen-fn {
  display: block; margin-top: .16em;
  font-size: .62rem; font-style: italic; letter-spacing: .04em;
  color: var(--faint); transition: color .5s;
}
.gen-node.is-active .gen-fn { color: var(--muted); }

.gen-thumb {
  display: block; margin-top: .7rem;
  width: clamp(42px, min(4.4vw, 7vh), 60px); aspect-ratio: 3/4;
  overflow: hidden;
}
.gen-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) brightness(.42) contrast(1.08);
  transition: filter 1.1s cubic-bezier(.16,1,.3,1);
}
.gen-node.is-active .gen-thumb img { filter: grayscale(0) brightness(.92) contrast(1); }
.gen-node:hover .gen-thumb img { filter: grayscale(1) brightness(.62) contrast(1.08); }
.gen-node.is-active:hover .gen-thumb img { filter: grayscale(0) brightness(.92) contrast(1); }

.gen-node.is-pending { cursor: default; }
.gen-node.is-pending::before { border-style: dashed; opacity: .6; }
.gen-node.is-pending:hover { color: var(--muted); }
.gen-node.is-pending:hover::before { border-color: var(--muted); }
.gen-thumb.is-empty { border: 1px solid var(--faint); opacity: .5; }

.gen-rail-foot {
  margin-top: clamp(18px, 3vh, 32px);
  font-size: .54rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--faint); line-height: 1.9;
}

/* generation panels */
.gen-panel { display: none; }
.gen-panel.is-active { display: block; animation: genIn .85s cubic-bezier(.16,1,.3,1) both; }
@keyframes genIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.gen-watermark {
  font-size: clamp(4.5rem, 13vw, 11rem);
  line-height: .78; font-weight: 300; letter-spacing: -.04em;
  color: rgba(247,244,237,.05);
  margin-bottom: clamp(-18px, -1.5vh, -8px);
  user-select: none; pointer-events: none;
}

.gen-nav {
  display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
  padding: clamp(26px, 4vh, 48px) var(--edge) clamp(66px, 9vh, 116px) 0;
  border-top: 1px solid var(--faint);
}
.gen-nav-btn {
  font-size: .58rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--muted); transition: color .4s; text-align: left;
}
.gen-nav-btn:hover { color: var(--ink); }
.gen-nav-btn:last-child { margin-left: auto; text-align: right; }
.gen-nav-btn .gen-nav-sub {
  display: block; margin-top: .5em;
  font-size: .72rem; letter-spacing: .02em; text-transform: none;
  font-style: italic; color: var(--faint);
}

/* lineage note */
.lineage {
  padding-top: clamp(76px, 11vh, 138px);
  padding-bottom: clamp(76px, 11vh, 138px);
  padding-right: var(--edge);
  border-top: 1px solid var(--faint);
}
.rel-latin {
  font-size: clamp(1.4rem, 3vw, 2.8rem);
  font-weight: 300; font-style: italic; line-height: 1.1;
  margin-bottom: clamp(28px, 4vh, 52px);
}
.rel-intro {
  font-size: clamp(.88rem, 1.2vw, 1.05rem);
  color: var(--muted); font-style: italic;
  max-width: 520px; line-height: 1.75;
  margin-bottom: clamp(40px, 6vh, 72px);
}
.rel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: clamp(24px, 3.5vw, 52px);
}
.rel-category-label {
  font-size: .56rem; letter-spacing: .32em; text-transform: uppercase;
  color: var(--faint); margin-bottom: .9rem;
}
.rel-items { list-style: none; }
.rel-items li {
  font-size: clamp(.78rem, 1vw, .9rem);
  color: var(--muted); font-weight: 300;
  padding: .45rem 0; border-bottom: 1px solid var(--faint);
  transition: color .3s;
}
.rel-items li:hover { color: var(--ink); }

/* ─── footer ─── */
footer {
  border-top: 1px solid var(--faint);
  padding: clamp(28px, 4vh, 52px) var(--edge)
           clamp(28px, 4vh, 52px) var(--content-left);
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}
.footer-logo img {
  height: clamp(14px, 1.8vh, 20px); width: auto; opacity: .3;
  object-fit: contain;
  transform: rotate(90deg); transform-origin: left center;
}
.footer-nav {
  display: flex; gap: clamp(14px, 2vw, 30px); flex-wrap: wrap;
  font-size: .56rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--muted);
}
.footer-nav a { transition: color .3s; }
.footer-nav a:hover { color: var(--ink); }
.footer-meta {
  font-size: .56rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--faint); line-height: 1.85; text-align: right;
}

/* ─── reveal ─── */
.reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity .9s cubic-bezier(.16,1,.3,1), transform .9s cubic-bezier(.16,1,.3,1);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .1s; }
.reveal-d2 { transition-delay: .2s; }
.reveal-d3 { transition-delay: .3s; }
.reveal-d4 { transition-delay: .4s; }
.reveal-d5 { transition-delay: .5s; }
.reveal-d6 { transition-delay: .6s; }

/* ─── short viewports ─── */
@media (max-height: 840px) {
  .gen-rail-foot { display: none; }
}

/* ─── mobile ─── */
@media (max-width: 900px) {
  body.object-page main { padding-right: var(--edge); }
  body.object-page footer {
    padding-right: var(--edge);
    padding-bottom: calc(clamp(28px, 4vh, 52px) + 74px);
  }
  /* rail pins to the bottom edge so the genealogy stays reachable */
  .genealogy {
    top: auto; bottom: 0; left: 0; right: 0;
    width: 100%; height: auto;
    border-left: 0; border-top: 1px solid var(--faint);
    background: rgba(0,0,1,.94); backdrop-filter: blur(8px);
    padding: 11px var(--edge) 13px var(--content-left);
    overflow: visible;
  }
  .gen-inner { margin: 0; }
  .gen-rail-label, .gen-rail-foot, .gen-thumb, .gen-fn { display: none; }
  .gen-list { display: flex; gap: clamp(18px, 5vw, 38px); overflow-x: auto; scrollbar-width: none; }
  .gen-list::-webkit-scrollbar { display: none; }
  .gen-list::before {
    left: 0; right: 0; top: 4px; bottom: auto; width: auto; height: 1px;
    background: linear-gradient(to right, var(--faint) 0%, var(--faint) 72%, transparent 100%);
  }
  .gen-node { flex: 0 0 auto; min-width: 86px; padding: 18px 0 0 0; }
  .gen-node::before { top: 0; left: 0; }
}

@media (max-width: 640px) {
  .img-grid.col-2, .img-grid.col-3, .img-grid.mixed, .img-grid.mixed-r {
    grid-template-columns: 1fr;
  }
  .rel-grid { grid-template-columns: 1fr 1fr; }
  .value-row { flex-direction: column; gap: 1.1rem; }
  footer { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
  .header-project { display: none; }
}