:root {
  --ink: #07131f;
  --gold: #d59651;
  --gold-soft: #edc38f;
  --teal: #5c9291;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; background: var(--ink); }

body {
  color: var(--gold-soft);
  font-family: var(--font-geist-mono), monospace;
}

.archive-shell {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 72% 51%, rgba(25, 84, 101, .18), transparent 31%),
    radial-gradient(circle at 58% 86%, rgba(179, 89, 31, .12), transparent 24%),
    linear-gradient(120deg, #06111d 0%, #071725 54%, #04101a 100%);
}

.grain {
  position: absolute;
  inset: -35%;
  z-index: -1;
  opacity: .18;
  pointer-events: none;
  background-image: url("afterlight-concept.png");
  background-size: 42%;
  background-position: center;
  mix-blend-mode: soft-light;
  filter: contrast(180%) saturate(30%);
  transform: rotate(.001deg);
}

.archive-shell::before,
.archive-shell::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.archive-shell::before {
  inset: 22px;
  border: 1px solid rgba(213, 150, 81, .08);
}

.archive-shell::after {
  width: 10px;
  height: 10px;
  right: 6.2vw;
  bottom: 13.6vh;
  border-right: 1px solid var(--teal);
  border-bottom: 1px solid var(--teal);
  box-shadow: 5px 5px 14px rgba(85, 161, 159, .5);
}

.index-mark {
  position: absolute;
  top: clamp(28px, 6.6vh, 68px);
  left: clamp(26px, 4.5vw, 78px);
  display: grid;
  grid-template-columns: auto auto minmax(100px, 20vw);
  align-items: center;
  gap: 22px;
  color: var(--gold);
  font: 500 clamp(10px, .85vw, 14px)/1 var(--font-geist-mono), monospace;
  letter-spacing: .34em;
}

.index-mark .cross { font-size: 24px; font-weight: 200; letter-spacing: 0; }
.index-mark i { display: block; height: 1px; background: linear-gradient(90deg, var(--gold), transparent); }

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, .9fr);
  align-items: end;
  gap: clamp(30px, 5vw, 96px);
  padding: clamp(120px, 18vh, 180px) clamp(38px, 6vw, 110px) clamp(94px, 12vh, 130px);
}

.intro { align-self: end; padding-bottom: 2.5vh; position: relative; z-index: 2; }
.kicker {
  margin: 0 0 22px;
  color: rgba(225, 177, 119, .54);
  font-size: clamp(.68rem, .76vw, .82rem);
  letter-spacing: .32em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 840px;
  color: #edc18d;
  font: 400 clamp(3.1rem, 6.1vw, 7rem)/.86 var(--font-display), Georgia, serif;
  letter-spacing: .045em;
  text-shadow: 0 0 34px rgba(207, 130, 60, .12);
}

.title-rule {
  width: min(100%, 760px);
  height: 1px;
  margin: 27px 0 22px;
  position: relative;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(213,150,81,.7) 72%, transparent 100%);
}

.title-rule span { position: absolute; right: 4px; top: -8px; color: var(--gold); font-size: 13px; }
.subtitle { margin: 0; color: var(--gold); font: italic 400 clamp(1.15rem, 1.7vw, 2rem)/1.4 var(--font-display), Georgia, serif; letter-spacing: .025em; }

.specimen {
  position: relative;
  align-self: center;
  justify-self: center;
  width: min(100%, 560px);
  margin: 2vh 0 0;
  transform: translateY(1.5vh);
  animation: arrive 1.2s cubic-bezier(.2,.8,.2,1) both;
}

.specimen img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  border-radius: 24px;
  filter: saturate(.94) contrast(1.06) drop-shadow(0 24px 42px rgba(0,0,0,.55));
  mix-blend-mode: screen;
}

.specimen-glow {
  position: absolute;
  inset: 8% 4%;
  background: rgba(210, 107, 36, .28);
  filter: blur(55px);
  border-radius: 40%;
  animation: breathe 6s ease-in-out infinite;
}

.specimen figcaption {
  display: flex;
  justify-content: space-between;
  padding: 12px 9px 0;
  color: rgba(213, 150, 81, .58);
  font-size: 7px;
  letter-spacing: .2em;
}

.coordinates {
  position: absolute;
  right: clamp(28px, 4.8vw, 90px);
  bottom: 9vh;
  display: grid;
  gap: 7px;
  color: var(--teal);
  text-align: right;
  font-size: clamp(8px, .75vw, 12px);
  line-height: 1;
  letter-spacing: .24em;
  opacity: .8;
}

footer {
  position: absolute;
  left: clamp(26px, 4.5vw, 78px);
  right: clamp(26px, 4.5vw, 78px);
  bottom: 25px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  padding-top: 12px;
  border-top: 1px solid rgba(213, 150, 81, .16);
  color: rgba(213, 150, 81, .42);
  font-size: 7px;
  letter-spacing: .2em;
}

footer span:last-child { text-align: right; }

@keyframes arrive { from { opacity: 0; transform: translateY(4vh) scale(.98); } to { opacity: 1; transform: translateY(1.5vh) scale(1); } }
@keyframes breathe { 0%, 100% { opacity: .55; transform: scale(.96); } 50% { opacity: .85; transform: scale(1.04); } }

@media (max-width: 860px) {
  .archive-shell { overflow-y: auto; }
  .hero { grid-template-columns: 1fr; align-items: start; padding-top: 130px; padding-bottom: 140px; }
  .specimen { grid-row: 1; width: min(78vw, 510px); margin-top: 0; }
  .intro { grid-row: 2; padding: 10px 0 0; }
  h1 { font-size: clamp(3rem, 12vw, 5.8rem); }
  .coordinates { position: static; grid-row: 3; text-align: left; }
  .footer-center { display: none; }
  footer { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .index-mark { grid-template-columns: auto auto 1fr; gap: 12px; letter-spacing: .2em; }
  .hero { padding-inline: 26px; }
  .kicker { line-height: 1.6; }
  .specimen { width: 92vw; }
}

@media (prefers-reduced-motion: reduce) {
  .specimen, .specimen-glow { animation: none; }
}