/* ─── Embryonic Shifts — page-scoped design system ──────────────────── */
.es-page {
  --es-bg:        #0b0b0c;
  --es-bg-raised: #141416;
  --es-fg:        #f2ede4;
  --es-fg-muted:  #a8a49a;
  --es-border:    #2a2a2c;
  --es-ox:        #9a3b3b;
  --es-ox-dim:    #5c2626;
  --es-teal:      #2c6e6b;
  --es-teal-dim:  #1c4644;
  --es-gold:      #c9a15a;

  --es-serif: 'Fraunces', 'Playfair Display', 'EB Garamond', Georgia, serif;
  --es-sans:  'Inter', 'Nunito', system-ui, -apple-system, sans-serif;
  --es-bn:    'Noto Serif Bengali', 'Kalpurush', 'Vrinda', serif;

  --es-content-width: 760px;
  --es-wide-width: 1200px;

  background: var(--es-bg);
  color: var(--es-fg);
  font-family: var(--es-sans);
  line-height: 1.65;
}

.es-page * { box-sizing: border-box; }
.es-page img, .es-page video { max-width: 100%; height: auto; display: block; }
.es-page a { color: var(--es-gold); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.es-page a:hover { text-decoration: none; }

.es-page h1, .es-page h2, .es-page h3 {
  font-family: var(--es-serif);
  font-weight: 300;
  font-optical-sizing: auto;
  line-height: 1.1;
  margin: 0 0 0.5em;
  color: var(--es-fg);
}
.es-page h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
.es-page h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
.es-page p { margin: 0 0 1.1em; }
.es-page p:last-child { margin-bottom: 0; }

.es-wrap {
  max-width: var(--es-content-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.es-wrap-wide {
  max-width: var(--es-wide-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.es-section {
  padding: clamp(3rem, 8vw, 6rem) 0;
  border-top: 1px solid var(--es-border);
}
.es-section:first-of-type { border-top: none; }
.es-eyebrow {
  font-family: var(--es-sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--es-gold);
  margin-bottom: 0.75rem;
  display: block;
}

/* ─── Sub-nav ─────────────────────────────────────────────────────── */
.es-subnav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 11, 12, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--es-border);
  overflow-x: auto;
  scrollbar-width: none;
}
.es-subnav::-webkit-scrollbar { display: none; }
.es-subnav-list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0.85rem 1.5rem;
  white-space: nowrap;
  font-size: 0.82rem;
  font-family: var(--es-sans);
}
.es-subnav-list a {
  color: var(--es-fg-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.es-subnav-list a:hover { color: var(--es-gold); }

/* ─── Hero ────────────────────────────────────────────────────────── */
.es-hero {
  position: relative;
  height: 100svh;
  min-height: 480px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  background: #000;
}
.es-hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.es-hero-media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.es-hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.15) 40%, rgba(11,11,12,0.95) 100%);
  transition: opacity 0.3s ease;
}
.es-hero.is-playing-full .es-hero-media::after {
  opacity: 0;
  pointer-events: none;
}
.es-hero.is-playing-full .es-hero-inner {
  display: none;
}
.es-hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  min-width: 0;
  padding: 0 1.5rem clamp(2rem, 6vw, 4rem);
}
.es-hero-title {
  font-size: clamp(2rem, 8vw, 5rem);
  overflow-wrap: break-word;
  margin-bottom: 0.2em;
}
.es-hero-title-bn {
  display: block;
  font-family: var(--es-bn);
  font-size: 0.45em;
  color: var(--es-fg-muted);
  margin-top: 0.15em;
}
.es-hero-specs {
  font-family: var(--es-sans);
  font-size: 0.85rem;
  color: var(--es-fg-muted);
  letter-spacing: 0.02em;
  max-width: 640px;
}
.es-hero-subtitle {
  font-family: var(--es-serif);
  font-style: italic;
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  color: var(--es-fg-muted);
  margin: 0.6em 0 1em;
  max-width: 640px;
}

.es-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: clamp(64px, 10vw, 92px);
  height: clamp(64px, 10vw, 92px);
  border-radius: 50%;
  border: 1px solid rgba(242,237,228,0.5);
  background: rgba(11,11,12,0.35);
  color: var(--es-fg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.es-play-btn:hover { background: rgba(154,59,59,0.5); border-color: var(--es-ox); transform: translate(-50%, -50%) scale(1.06); }
.es-play-btn svg { width: 38%; height: 38%; margin-left: 3px; }
.es-hero.is-playing-full .es-play-btn { display: none; }

/* ─── Perception section ─────────────────────────────────────────── */
.es-perception {
  background: var(--es-bg-raised);
}
.es-perception-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
.es-perception-lede {
  font-family: var(--es-serif);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 300;
  color: var(--es-fg);
  max-width: 680px;
}
.es-perception-lede em {
  display: inline-block;
  margin-top: 0.75rem;
}
.es-perception-setup {
  display: inline-block;
  font-family: var(--es-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--es-fg);
}
.es-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  font-family: var(--es-sans);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--es-teal);
  margin: 1.5rem 0;
  padding: 1.25rem;
  border: 1px solid var(--es-teal-dim);
  border-radius: 4px;
  background: rgba(44,110,107,0.08);
}
.es-flow span.es-arrow { color: var(--es-fg-muted); }
.es-flow strong { color: var(--es-fg); font-family: var(--es-serif); font-weight: 400; }

/* ─── Process ─────────────────────────────────────────────────────── */
.es-step {
  margin-bottom: 2.5rem;
  padding-left: 1.25rem;
  border-left: 2px solid var(--es-ox-dim);
}
.es-step h3 { color: var(--es-ox); }
.es-quote {
  font-family: var(--es-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--es-fg);
  border-left: 2px solid var(--es-gold);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
}
.es-quote cite {
  display: block;
  font-family: var(--es-sans);
  font-style: normal;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--es-fg-muted);
  margin-top: 0.6em;
}
.es-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}
.es-gallery figure { margin: 0; }
.es-gallery img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 2px;
}
.es-gallery figcaption {
  font-size: 0.75rem;
  color: var(--es-fg-muted);
  margin-top: 0.4rem;
}
.es-process-video {
  margin-top: 2.5rem;
}
.es-process-video video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 2px;
}
.es-process-video figcaption {
  font-size: 0.75rem;
  color: var(--es-fg-muted);
  margin-top: 0.5rem;
}

/* ─── Zoetrope / build ────────────────────────────────────────────── */
.es-zoetrope { background: var(--es-bg-raised); }
.es-zoetrope-hero {
  width: 100%;
  aspect-ratio: 4/5;
  max-height: 640px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 2rem;
}
.es-specs-dl {
  display: grid;
  grid-template-columns: minmax(140px, 220px) minmax(0, 1fr);
  gap: 0.6rem 1.5rem;
  font-size: 0.9rem;
  margin: 1.5rem 0 2.5rem;
}
.es-specs-dl dt {
  color: var(--es-fg-muted);
  font-family: var(--es-sans);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.es-specs-dl dd { margin: 0; }
.es-diagrams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.es-diagrams figure { margin: 0; background: #000; border: 1px solid var(--es-border); }
.es-diagrams img { width: 100%; }
.es-diagrams figcaption {
  font-size: 0.75rem;
  color: var(--es-fg-muted);
  padding: 0.6rem 0.8rem;
}
.es-build-credit {
  font-size: 0.85rem;
  color: var(--es-fg-muted);
  border-top: 1px solid var(--es-border);
  padding-top: 1.25rem;
  margin-top: 0.5rem;
  overflow-wrap: anywhere;
}
.es-build-credit a { color: var(--es-fg); font-family: var(--es-sans); }

/* ─── Gender and Biology carousel ────────────────────────────────── */
.es-car {
  position: relative;
  margin-top: 2.5rem;
}
.es-car-lang-toggle {
  display: inline-flex;
  border: 1px solid var(--es-border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.es-car-lang-toggle button {
  font-family: var(--es-sans);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding: 0.45rem 1.1rem;
  background: transparent;
  border: none;
  color: var(--es-fg-muted);
  cursor: pointer;
}
.es-car-lang-toggle button.is-active {
  background: var(--es-gold);
  color: #1a1408;
}
.es-car-viewport {
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--es-border);
  background: var(--es-bg);
}
.es-car-track {
  display: flex;
  transition: transform 0.4s ease;
}
.es-car-slide {
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .es-car-slide { grid-template-columns: 1fr 1fr; }
}
.es-car-slide img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.es-car-copy { padding: clamp(1.25rem, 3vw, 2.5rem); }
.es-car-cat {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--es-teal);
  display: block;
  margin-bottom: 0.5rem;
}
.es-car-copy h3 { margin-bottom: 0.6em; }
.es-car-copy p[lang="bn"] { font-family: var(--es-bn); font-size: 1.02rem; line-height: 1.85; }
.es-car-sources {
  display: block;
  margin-top: 1rem;
  font-size: 0.72rem;
  color: var(--es-fg-muted);
}
.es-car-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}
.es-car-arrows { display: flex; gap: 0.5rem; }
.es-car-arrows button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--es-border);
  background: transparent;
  color: var(--es-fg);
  cursor: pointer;
  font-family: var(--es-sans);
}
.es-car-arrows button:hover { border-color: var(--es-gold); color: var(--es-gold); }
.es-car-dots { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.es-car-dots button {
  width: 8px; height: 8px; border-radius: 50%;
  border: none; background: var(--es-border); padding: 0; cursor: pointer;
}
.es-car-dots button.is-active { background: var(--es-gold); }
.es-car-ph {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 200px;
  color: var(--es-fg-muted);
  font-size: 0.8rem;
  background: repeating-linear-gradient(45deg, #17171a, #17171a 10px, #131315 10px, #131315 20px);
}

/* ─── Reading room ────────────────────────────────────────────────── */
.es-doc-list { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.es-doc {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--es-border);
}
.es-doc:last-child { border-bottom: 1px solid var(--es-border); }
.es-doc-title { font-family: var(--es-serif); font-size: 1.05rem; color: var(--es-fg); text-decoration: none; }
.es-doc-title:hover { color: var(--es-gold); }
.es-doc-meta { font-size: 0.75rem; color: var(--es-fg-muted); white-space: nowrap; }

/* ─── Bibliography ────────────────────────────────────────────────── */
.es-bib-toggle {
  font-family: var(--es-sans);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  background: transparent;
  border: 1px solid var(--es-border);
  color: var(--es-fg);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  cursor: pointer;
  margin-bottom: 1.5rem;
}
.es-bib-toggle:hover { border-color: var(--es-gold); color: var(--es-gold); }
.es-bib-body { display: none; }
.es-bib-body.is-open { display: block; }
.es-bib-section { margin-bottom: 2rem; }
.es-bib-section h3 {
  font-family: var(--es-sans);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--es-teal);
  margin-bottom: 0.8em;
}
.es-bib ol {
  padding-left: 1.4rem;
  margin: 0;
  font-size: 0.85rem;
  color: var(--es-fg-muted);
}
.es-bib li { margin-bottom: 0.55rem; }
.es-bib li a { color: var(--es-fg-muted); text-decoration-color: var(--es-border); }
.es-bib li a:hover { color: var(--es-gold); }
.es-bib-note {
  font-size: 0.8rem;
  font-style: italic;
  color: var(--es-fg-muted);
  margin-bottom: 2rem;
}

/* ─── Credits ─────────────────────────────────────────────────────── */
.es-credits { text-align: center; padding-bottom: clamp(4rem, 10vw, 7rem); }
.es-credits-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  margin: 2.5rem 0;
  text-align: left;
}
.es-credits-grid h4 {
  font-family: var(--es-sans);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--es-fg-muted);
  margin: 0 0 0.5em;
}
.es-credits-grid p { margin: 0; font-size: 0.92rem; }
.es-back-link {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--es-sans);
  font-size: 0.85rem;
  color: var(--es-fg-muted);
}

@media (max-width: 640px) {
  .es-specs-dl { grid-template-columns: 1fr; }
  .es-specs-dl dt { margin-top: 0.6rem; }
}