:root {
  color-scheme: dark;
  --ink: #090a10;
  --ink-lift: #171725;
  --brass: #c6a45b;
  --brass-dim: #80683b;
  --ivory: #efe6cf;
  --violet: #7773d8;
  --muted: #9993ac;
  --frame: rgba(198, 164, 91, 0.48);
  --display: Georgia, "Times New Roman", serif;
  --utility: "Trebuchet MS", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  background: var(--ink);
}

body {
  min-height: 100svh;
  overflow: hidden;
  color: var(--ivory);
  font-family: var(--utility);
}

.stage {
  position: relative;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 50% 43%, rgba(64, 60, 105, 0.64) 0, rgba(23, 23, 37, 0.86) 31%, transparent 62%),
    linear-gradient(145deg, #0d0e16, var(--ink) 65%);
}

.grain {
  position: absolute;
  z-index: -1;
  inset: -40%;
  opacity: 0.12;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.26'/%3E%3C/svg%3E");
  animation: grain-drift 18s steps(10) infinite;
}

.deco-frame {
  position: absolute;
  inset: clamp(14px, 2.6vw, 32px);
  border: 1px solid var(--frame);
  pointer-events: none;
}

.deco-frame::before,
.deco-frame::after {
  position: absolute;
  left: 50%;
  width: 88px;
  height: 16px;
  border-right: 1px solid var(--frame);
  border-left: 1px solid var(--frame);
  content: "";
  transform: translateX(-50%);
}

.deco-frame::before {
  top: -1px;
  border-bottom: 1px solid var(--frame);
  clip-path: polygon(0 0, 35% 0, 50% 100%, 65% 0, 100% 0, 100% 100%, 0 100%);
}

.deco-frame::after {
  bottom: -1px;
  border-top: 1px solid var(--frame);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 65% 100%, 50% 0, 35% 100%, 0 100%);
}

.deco-frame__corner {
  position: absolute;
  width: 34px;
  height: 34px;
  border-color: var(--brass-dim);
}

.deco-frame__corner--north-west { top: 8px; left: 8px; border-top: 1px solid; border-left: 1px solid; }
.deco-frame__corner--north-east { top: 8px; right: 8px; border-top: 1px solid; border-right: 1px solid; }
.deco-frame__corner--south-west { bottom: 8px; left: 8px; border-bottom: 1px solid; border-left: 1px solid; }
.deco-frame__corner--south-east { right: 8px; bottom: 8px; border-right: 1px solid; border-bottom: 1px solid; }

.transmission-meta {
  position: absolute;
  z-index: 3;
  top: clamp(34px, 5vw, 60px);
  right: clamp(36px, 6vw, 78px);
  left: clamp(36px, 6vw, 78px);
  display: flex;
  justify-content: space-between;
  color: var(--brass);
  font-size: clamp(0.52rem, 0.65vw, 0.66rem);
  letter-spacing: 0.24em;
}

.signal {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(92vw, 760px);
  place-items: center;
  text-align: center;
}

.signal__geometry {
  position: absolute;
  top: 45%;
  left: 50%;
  width: clamp(260px, 37vw, 430px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
}

.signal__halo {
  position: absolute;
  inset: 8%;
  border: 1px solid rgba(225, 193, 113, 0.78);
  border-radius: 50%;
  box-shadow: 0 0 58px rgba(119, 115, 216, 0.27), inset 0 0 48px rgba(119, 115, 216, 0.12);
  animation: halo-breathe 7s ease-in-out infinite;
}

.signal__halo::before,
.signal__halo::after {
  position: absolute;
  border: 1px solid rgba(198, 164, 91, 0.18);
  border-radius: 50%;
  content: "";
}

.signal__halo::before { inset: 8%; }
.signal__halo::after { inset: -12%; border-style: dashed; }

.signal__ray {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1px;
  height: 57%;
  background: linear-gradient(rgba(198, 164, 91, 0.34), transparent);
  transform-origin: top;
}

.signal__ray--one { transform: rotate(45deg); }
.signal__ray--two { transform: rotate(135deg); }
.signal__ray--three { transform: rotate(225deg); }
.signal__ray--four { transform: rotate(315deg); }

.crest {
  position: relative;
  z-index: 2;
  width: clamp(175px, 22vw, 250px);
  padding: 0;
  border: 0;
  border-radius: 50%;
  outline: 1px solid transparent;
  background: transparent;
  color: inherit;
  cursor: pointer;
  filter: drop-shadow(0 0 20px rgba(220, 187, 102, 0.18));
  transition: filter 260ms ease, transform 260ms ease;
}

.crest:hover {
  filter: drop-shadow(0 0 25px rgba(220, 187, 102, 0.42));
  transform: scale(1.015);
}

.crest:focus-visible {
  outline: 2px solid var(--ivory);
  outline-offset: 8px;
}

.crest[data-state="acknowledged"] {
  filter: drop-shadow(0 0 32px rgba(119, 115, 216, 0.76));
}

.crest__mark {
  display: block;
  width: 100%;
  overflow: visible;
}

.crest__orbit,
.crest__inner-orbit {
  fill: none;
  stroke: var(--brass);
  stroke-width: 1;
}

.crest__inner-orbit { opacity: 0.3; }

.crest__wedge { fill: #cba958; }
.crest__edge { fill: #82632f; opacity: 0.92; }
.crest__hole { fill: #3d3329; opacity: 0.82; }
.crest__crown { fill: var(--brass); }

.signal__copy {
  margin-top: clamp(26px, 4vh, 46px);
}

.signal__copy h1 {
  margin: 0;
  color: var(--ivory);
  font-family: var(--display);
  font-size: clamp(1.65rem, 4.2vw, 3.35rem);
  font-weight: 400;
  letter-spacing: 0.22em;
  line-height: 1.08;
  text-indent: 0.22em;
}

.signal__copy p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(0.5rem, 0.78vw, 0.66rem);
  letter-spacing: 0.3em;
  line-height: 1.6;
}

.telemetry {
  position: absolute;
  right: clamp(36px, 6vw, 78px);
  bottom: clamp(36px, 6vw, 66px);
  text-align: right;
}

.telemetry dl { margin: 0; }
.telemetry dl > div { display: flex; justify-content: flex-end; gap: 0.55rem; }
.telemetry dt,
.telemetry dd { margin: 0; font-size: 0.56rem; letter-spacing: 0.18em; line-height: 1.75; }
.telemetry dt { color: var(--brass); }
.telemetry dd { color: #d8ca9c; }

.ornament {
  position: absolute;
  bottom: clamp(38px, 5vw, 62px);
  left: 50%;
  color: var(--brass-dim);
  font-family: var(--display);
  letter-spacing: 0.55em;
  transform: translateX(-50%);
}

@keyframes halo-breathe {
  0%, 100% { opacity: 0.72; transform: scale(0.99); }
  50% { opacity: 1; transform: scale(1.015); }
}

@keyframes grain-drift {
  0% { transform: translate3d(-2%, -3%, 0); }
  50% { transform: translate3d(3%, 2%, 0); }
  100% { transform: translate3d(-2%, -3%, 0); }
}

@media (max-width: 560px), (max-height: 600px) {
  body { overflow: auto; }
  .stage { min-height: 100svh; padding: 104px 28px 138px; }
  .signal { width: 100%; max-width: 760px; }
  .deco-frame { inset: 12px; }
  .transmission-meta {
    top: 31px;
    right: 30px;
    left: 30px;
    flex-direction: column;
    gap: 6px;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
  }
  .transmission-meta span:last-child { text-align: right; }
  .signal__geometry { top: 41%; width: min(82vw, 330px); }
  .crest { width: min(53vw, 210px); }
  .signal__copy { margin-top: 32px; }
  .signal__copy h1 { font-size: clamp(1.45rem, 7vw, 2rem); }
  .signal__copy p { max-width: 25rem; margin-inline: auto; font-size: 0.75rem; line-height: 1.9; }
  .telemetry { right: 32px; bottom: 57px; left: 32px; text-align: center; }
  .telemetry dl { display: grid; grid-template-columns: 1fr; }
  .telemetry dt,
  .telemetry dd { font-size: 0.75rem; }
  .telemetry dl > div { justify-content: center; }
  .ornament { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}