/* ============================================================
   De-Extinct: Jurassic Dinosaurs — EXCAVATION LOG skin
   Volcanic earth ground, bone-white ink, museum serif headings, and a
   stratigraphic layout: each section is a numbered layer with a depth
   marker, so the page reads top-to-bottom as a dig site.
   Deliberately unlike the military-briefing reference (cold green +
   amber + condensed sans on flat signal panels).
   ============================================================ */
:root{
  --bg:#12100c;
  --surface:#1a1712;
  --elevated:#221d16;
  --text:#f2ece0;
  --muted:#a89b85;
  --border:#2f2820;
  --accent:#c8a15a;
  --accent-2:#e0c489;
  --bone:#f2ece0;
  --shell:min(1100px,calc(100% - 36px));
  --radius:3px;
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --serif:Georgia,'Iowan Old Style','Times New Roman',serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font);line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
.shell{width:var(--shell);margin:0 auto}
.vh{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.9rem 1.5rem;border:1px solid var(--accent);border-radius:var(--radius);
  font:inherit;font-weight:700;font-size:.95rem;text-decoration:none;
  cursor:pointer;background:var(--accent);color:#1a1408;
  transition:background .14s,color .14s;
}
.btn:hover{background:var(--accent-2);border-color:var(--accent-2)}
.btn:active{transform:translateY(1px)}
.btn-lg{padding:1rem 1.8rem;font-size:1rem}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(18,16,12,.9);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.head-row{display:flex;align-items:center;gap:.9rem;height:62px}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;min-height:44px}
.brand img{width:30px;height:30px;border-radius:5px}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-family:var(--serif);font-size:.95rem;letter-spacing:.02em}
.brand-txt small{
  color:var(--muted);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;
}
.head-note{
  color:var(--muted);font-family:var(--mono);font-size:.68rem;
  letter-spacing:.1em;text-transform:uppercase;margin-inline-end:auto;
}

/* ---------- language switcher ---------- */
.lang{position:relative}
.lang-btn{
  display:inline-flex;align-items:center;gap:.42rem;min-height:40px;
  border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);
  padding:.5rem .8rem;font:inherit;font-size:.82rem;font-weight:700;
  color:var(--text);cursor:pointer;transition:border-color .14s;
}
.lang-btn:hover{border-color:var(--accent)}
.lang-globe{display:inline-flex}
.lang-globe svg{width:16px;height:16px}
.lang-caret{display:inline-flex}
.lang-caret svg{width:11px;height:11px;transition:transform .18s}
.lang-btn[aria-expanded="true"] .lang-caret svg{transform:rotate(180deg)}
.lang-list{
  position:absolute;inset-inline-end:0;top:calc(100% + .5rem);z-index:80;
  min-width:232px;max-height:70vh;overflow-y:auto;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:0 20px 50px rgba(0,0,0,.6);margin:0;padding:.35rem;list-style:none;
  animation:langIn .14s ease-out;
}
@keyframes langIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.lang-list[hidden]{display:none}
.lang-list button{
  display:flex;justify-content:space-between;gap:1rem;width:100%;
  border:0;background:none;font:inherit;font-size:.9rem;color:var(--text);
  padding:.62rem .7rem;min-height:44px;border-radius:2px;
  cursor:pointer;text-align:start;
}
.lang-list button:hover,
.lang-list button[aria-current="true"]{background:rgba(242,236,224,.07)}
.lang-list button[aria-current="true"]{color:var(--accent)}
.lang-native{color:var(--muted);font-size:.8rem}
.lang-list li+li{margin-top:1px}

/* ---------- shared type ---------- */
.kicker{
  margin:0 0 .6rem;color:var(--accent);font-family:var(--mono);
  font-size:.7rem;font-weight:600;letter-spacing:.17em;text-transform:uppercase;
}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:-.01em}
.lede{margin:0 0 1.3rem;color:var(--muted);font-size:1rem;max-width:58ch}

/* ---------- hero ---------- */
.hero{padding:2.6rem 0 3rem;border-bottom:1px solid var(--border)}
.hero-in{display:grid;gap:2rem}
@media (min-width:920px){
  .hero-in{grid-template-columns:minmax(0,1fr) minmax(0,520px);
           align-items:center;gap:3rem}
}
.hero-copy h1{margin:0 0 .9rem;font-size:2.9rem;line-height:1.08}
.hero-cta{margin:1.4rem 0 .6rem}
.hero-note{margin:0 0 1.6rem;color:var(--muted);font-size:.78rem}

.chips{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;background:var(--border);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
}
.chips li{background:var(--surface);padding:.85rem .6rem;text-align:center}
.chips b{
  display:block;font-family:var(--serif);font-size:1.35rem;
  color:var(--accent);line-height:1.1;
}
.chips span{display:block;margin-top:.2rem;color:var(--muted);font-size:.7rem;line-height:1.35}

.hero-plate{margin:0}
.hero-plate img{
  width:100%;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--elevated);
}
.hero-plate figcaption{
  margin:.7rem 0 0;color:var(--muted);font-size:.8rem;line-height:1.5;
  padding-inline-start:.9rem;border-inline-start:2px solid var(--accent);
}

/* ---------- stratigraphic layers ---------- */
.layer{padding:3rem 0;border-bottom:1px solid var(--border)}
.layer-alt{background:var(--surface)}
.layer-in{display:grid;gap:1.2rem}
@media (min-width:860px){
  .layer-in{grid-template-columns:130px minmax(0,1fr);gap:2.4rem}
}
/* the depth marker: reads as a core sample beside each layer */
.depth{
  margin:0;display:flex;align-items:baseline;gap:.7rem;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;
}
.depth span{color:var(--accent);font-weight:700}
.depth b{color:var(--muted);font-weight:400}
@media (min-width:860px){
  .depth{flex-direction:column;gap:.35rem;position:sticky;top:86px;align-self:start}
  .depth b{font-size:1.05rem;letter-spacing:0}
}
.layer-body h2{margin:0 0 .8rem;font-size:2rem;line-height:1.18;max-width:24ch}
.layer-body > p{color:var(--muted);max-width:62ch}
.layer-body > p + p{margin-top:.9rem}

/* ---------- plates (screenshot gallery) ---------- */
.plates{
  margin:1.8rem 0 0;display:grid;gap:1.1rem;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:780px){.plates{grid-template-columns:repeat(3,minmax(0,1fr))}}
.plate{margin:0}
/* the store images are 2.17:1; the box matches so nothing is cropped */
.plate img{
  width:100%;aspect-ratio:1242/572;object-fit:cover;
  border:1px solid var(--border);border-radius:var(--radius);background:var(--elevated);
}
@media (min-width:780px){
  .plate-wide{grid-column:span 2}
}
.plate figcaption{
  margin:.55rem 0 0;color:var(--muted);font-size:.78rem;line-height:1.45;
  display:flex;gap:.5rem;align-items:baseline;
}
.cat{
  flex:0 0 auto;color:var(--accent);font-family:var(--mono);
  font-size:.66rem;letter-spacing:.1em;
}

/* ---------- systems ---------- */
.systems{
  list-style:none;margin:1.8rem 0 0;padding:0;
  display:grid;gap:1px;background:var(--border);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
}
@media (min-width:700px){.systems{grid-template-columns:repeat(2,minmax(0,1fr))}}
.systems li{background:var(--surface);padding:1.3rem 1.2rem}
.sys-n{
  display:block;font-family:var(--mono);font-size:.72rem;
  color:var(--accent);letter-spacing:.14em;margin-bottom:.5rem;
}
.systems h3{margin:0 0 .45rem;font-size:1.12rem;line-height:1.3}
.systems p{margin:0;color:var(--muted);font-size:.9rem}

/* ---------- record (definition list) ---------- */
.record{
  margin:1.8rem 0 0;display:grid;gap:1px;
  background:var(--border);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;
}
.record > div{background:var(--surface);padding:1rem 1.2rem}
@media (min-width:700px){
  .record > div{display:grid;grid-template-columns:190px minmax(0,1fr);gap:1.4rem;align-items:baseline}
}
.record dt{
  margin:0;color:var(--accent);font-family:var(--mono);
  font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
}
.record dd{margin:.35rem 0 0}
@media (min-width:700px){.record dd{margin:0}}
.record dd{color:var(--text);font-size:.94rem}

/* ---------- faq ---------- */
.faq{margin:1.8rem 0 0;display:grid;gap:.6rem}
.faq details{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:0;
}
.faq summary{
  cursor:pointer;padding:1rem 1.2rem;font-weight:600;font-size:.98rem;
  list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:flex-start;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:0 0 auto;width:9px;height:9px;margin-top:.45rem;
  border-inline-end:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:rotate(45deg);transition:transform .18s;
}
.faq details[open] summary::after{transform:rotate(225deg)}
.faq details p{
  margin:0;padding:0 1.2rem 1.1rem;color:var(--muted);font-size:.92rem;
  max-width:64ch;
}

/* ---------- final ---------- */
.final{
  padding:3.4rem 0;background:var(--elevated);
  border-bottom:1px solid var(--border);text-align:center;
}
.final-in{max-width:640px}
.final h2{margin:0 0 .8rem;font-size:2.1rem;line-height:1.15}
.final p{color:var(--muted);margin:0 0 .4rem}
.final .hero-cta{margin:1.6rem 0 .6rem}
.final .hero-note{margin:0}

/* ---------- footer ---------- */
.site-foot{padding:2.2rem 0}
.foot-in{display:grid;gap:.7rem}
.foot-brand{margin:0;font-family:var(--serif);font-weight:700;font-size:1.02rem}
.disclaimer{margin:0;color:var(--muted);font-size:.78rem;max-width:74ch;line-height:1.6}

/* ---------- skip link ---------- */
.skip{
  position:absolute;top:0;inset-inline-start:0;z-index:100;
  background:var(--accent);color:#1a1408;padding:.6rem 1rem;border-radius:0 0 6px 0;
  width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;
}
.skip:focus{width:auto;height:auto;overflow:visible;clip-path:none}

/* ---------- responsive ---------- */
@media (max-width:760px){
  .hero-copy h1{font-size:2.15rem}
  .layer-body h2{font-size:1.6rem}
  .final h2{font-size:1.65rem}
  .layer{padding:2.4rem 0}
  .head-note{display:none}
}
@media (max-width:420px){
  .hero-copy h1{font-size:1.9rem}
  .plates{grid-template-columns:1fr}
  .plate-wide{grid-column:auto}
  .chips b{font-size:1.15rem}
  .brand-txt small{display:none}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}