:root {
  color-scheme: dark;
  --ink: #071117;
  --ink-soft: #0c1a21;
  --ink-raised: #10232b;
  --paper: #dce3dc;
  --paper-soft: #aebdb9;
  --paper-dim: #758a88;
  --line: rgba(191, 209, 204, 0.18);
  --line-strong: rgba(203, 220, 214, 0.36);
  --mint: #b8dbce;
  --cyan: #7dc5c9;
  --violet: #a69acb;
  --amber: #f3b86b;
  --amber-pale: #ffd59d;
  --danger: #d59783;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 76% 18%, rgba(56, 98, 106, 0.11), transparent 31rem),
    var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button,
a,
input[type="range"] {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--amber-pale);
  outline-offset: 4px;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 1rem;
  left: 1rem;
  padding: .75rem 1rem;
  color: var(--ink);
  background: var(--amber-pale);
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.masthead {
  width: min(100% - 4rem, 1560px);
  margin: 0 auto;
  padding: 1.15rem 0 3rem;
  border-top: 1px solid var(--line-strong);
}

.edition {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0 1.1rem;
  border-bottom: 1px solid var(--line);
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.edition span:nth-child(2) {
  margin-left: auto;
  color: var(--amber);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(9rem, .55fr) minmax(24rem, 1.6fr) minmax(17rem, .8fr);
  gap: clamp(1.5rem, 4vw, 5rem);
  align-items: end;
  padding-top: clamp(2.5rem, 7vw, 6.5rem);
}

.kicker,
.eyebrow {
  margin: 0;
  color: var(--amber);
  font-family: var(--mono);
  font-size: .67rem;
  line-height: 1.4;
  letter-spacing: .15em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: -.08em;
  color: #e7ece6;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 7vw, 7.5rem);
  font-weight: 400;
  line-height: .86;
  letter-spacing: -.055em;
  text-wrap: balance;
}

.premise {
  max-width: 28rem;
  color: var(--paper-soft);
  font-family: var(--serif);
  font-size: clamp(1rem, 1.25vw, 1.22rem);
  line-height: 1.55;
}

.premise p {
  margin-bottom: 1rem;
}

.premise .instruction {
  position: relative;
  margin: 1.5rem 0 0;
  padding: 1.1rem 0 0 2.6rem;
  border-top: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--sans);
  font-size: .76rem;
  line-height: 1.55;
}

.instruction > span {
  position: absolute;
  left: 0;
  color: var(--amber);
  font-family: var(--mono);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(28rem, .78fr) minmax(38rem, 1.22fr);
  width: min(100% - 2rem, 1720px);
  min-height: 790px;
  margin: 0 auto;
  border: 1px solid var(--line-strong);
  background: var(--ink-soft);
  box-shadow: 0 30px 100px rgba(0, 0, 0, .25);
}

.records-panel,
.sky-panel {
  min-width: 0;
  padding: clamp(1.25rem, 2.5vw, 2.75rem);
}

.records-panel {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line-strong);
  background:
    linear-gradient(rgba(194, 216, 209, .025) 1px, transparent 1px),
    var(--ink-soft);
  background-size: 100% 5rem;
}

.sky-panel {
  display: flex;
  flex-direction: column;
  background: #08141a;
}

.panel-heading,
.sky-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 4.6rem;
  margin-bottom: 1.2rem;
}

.panel-heading h2,
.sky-heading h2 {
  margin: .42rem 0 0;
  color: var(--paper);
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2vw, 2rem);
  font-weight: 400;
  line-height: 1.08;
}

.scale-note {
  margin: .15rem 0 0;
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.trace-list {
  display: grid;
  gap: .85rem;
}

.trace-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(7, 17, 23, .66);
  transition: border-color 220ms ease, background-color 220ms ease;
}

.trace-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-left: 2px solid transparent;
  transition: border-color 220ms ease, box-shadow 220ms ease;
}

.trace-card.is-aligned {
  border-color: rgba(243, 184, 107, .48);
  background: rgba(21, 31, 31, .8);
}

.trace-card.is-aligned::after {
  border-left-color: var(--amber);
  box-shadow: inset 12px 0 32px rgba(243, 184, 107, .06);
}

.trace-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem 1rem .35rem;
}

.trace-heading > div {
  display: flex;
  align-items: baseline;
  gap: .65rem;
}

.detector-code {
  margin: 0;
  color: var(--amber);
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .08em;
}

.trace-heading h3 {
  margin: 0;
  font-family: var(--sans);
  font-size: .82rem;
  font-weight: 580;
  letter-spacing: .02em;
}

.detector-place {
  margin: .08rem 0 0;
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .58rem;
}

.waveform-frame {
  position: relative;
  height: 6rem;
  overflow: hidden;
  margin: 0 .9rem;
  background:
    linear-gradient(90deg, transparent 49.8%, rgba(243, 184, 107, .045) 49.8%, rgba(243, 184, 107, .045) 50.2%, transparent 50.2%),
    linear-gradient(rgba(184, 219, 206, .04) 1px, transparent 1px);
  background-size: 100% 100%, 100% 23px;
}

.waveform-frame svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.baseline {
  fill: none;
  stroke: rgba(184, 219, 206, .16);
  stroke-width: 1;
}

.waveform {
  fill: none;
  stroke: var(--mint);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.waveform.halo {
  stroke: rgba(184, 219, 206, .18);
  stroke-width: 7;
  filter: blur(2px);
}

.trace-moving {
  transition: transform 70ms linear;
}

.reference-tick {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1;
  stroke-dasharray: 2 4;
  vector-effect: non-scaling-stroke;
}

.reference-dot {
  fill: var(--ink);
  stroke: var(--amber);
  stroke-width: 1.5;
}

.trace-card.is-aligned .reference-dot {
  fill: var(--amber);
  filter: drop-shadow(0 0 7px rgba(243, 184, 107, .76));
}

.trace-control {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .38rem .9rem;
  align-items: center;
  padding: .2rem 1rem .9rem;
}

.trace-control label,
.shift-value,
.trace-status {
  font-family: var(--mono);
  font-size: .61rem;
  line-height: 1.3;
}

.trace-control label {
  color: var(--paper-dim);
  letter-spacing: .07em;
  text-transform: uppercase;
}

.shift-value {
  color: var(--paper-soft);
}

.trace-control input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  height: 44px;
  margin: 0;
  cursor: ew-resize;
  appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--paper-dim), var(--paper-soft));
}

input[type="range"]::-moz-range-track {
  height: 2px;
  border-radius: 2px;
  background: var(--paper-dim);
}

input[type="range"]::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  margin-top: -8px;
  appearance: none;
  border: 1px solid var(--amber-pale);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(243, 184, 107, .07);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 1px solid var(--amber-pale);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(243, 184, 107, .07);
}

.trace-card.is-aligned input[type="range"]::-webkit-slider-thumb {
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(243, 184, 107, .12), 0 0 16px rgba(243, 184, 107, .26);
}

.trace-card.is-aligned input[type="range"]::-moz-range-thumb {
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(243, 184, 107, .12), 0 0 16px rgba(243, 184, 107, .26);
}

.trace-control input:disabled {
  cursor: default;
  opacity: .72;
}

.trace-status {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--paper-dim);
}

.trace-card.is-aligned .trace-status {
  color: var(--amber-pale);
}

.instrument-footer {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1.35rem;
}

.keyboard-note {
  display: flex;
  gap: .65rem;
  align-items: center;
  color: var(--paper-dim);
  font-size: .64rem;
  line-height: 1.4;
}

.keyboard-icon {
  flex: 0 0 auto;
  padding: .22rem .38rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--paper-soft);
  font-family: var(--mono);
}

.triangulate-button,
.replay-button {
  border: 0;
  color: var(--ink);
  background: var(--amber);
  cursor: pointer;
}

.triangulate-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.7rem;
  padding: 0 1.1rem;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  transition: color 180ms ease, background-color 180ms ease, opacity 180ms ease, transform 180ms ease;
}

.triangulate-button:not(:disabled):hover {
  background: var(--amber-pale);
  transform: translateY(-2px);
}

.triangulate-button:disabled {
  color: var(--paper-dim);
  background: rgba(117, 138, 136, .1);
  cursor: not-allowed;
  opacity: .68;
}

.button-mark {
  font-size: 1.25rem;
}

.confidence-block {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .38rem .7rem;
  width: min(12.5rem, 42%);
  padding-top: .1rem;
}

.confidence-block label,
.confidence-number {
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .59rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.confidence-number {
  color: var(--paper-soft);
}

.confidence-block meter {
  grid-column: 1 / -1;
  width: 100%;
  height: 3px;
  border: 0;
  background: rgba(184, 219, 206, .14);
}

meter::-webkit-meter-bar {
  height: 3px;
  border: 0;
  border-radius: 0;
  background: rgba(184, 219, 206, .14);
}

meter::-webkit-meter-optimum-value {
  background: var(--amber);
  transition: width 140ms linear;
}

meter::-moz-meter-bar {
  background: var(--amber);
}

.atlas {
  position: relative;
  overflow: hidden;
  min-height: 0;
  aspect-ratio: 920 / 600;
  border: 1px solid var(--line);
  background: #071117;
}

.sky-map {
  display: block;
  width: 100%;
  height: 100%;
}

.coordinates path {
  fill: none;
  stroke: rgba(159, 181, 181, .095);
  stroke-width: 1;
  stroke-dasharray: 2 7;
}

.coordinates text,
.constellation text {
  fill: rgba(174, 196, 194, .34);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
}

.stars circle {
  fill: #dce8df;
  opacity: .55;
}

.constellation path {
  fill: none;
  stroke: rgba(144, 166, 170, .12);
  stroke-width: 1;
}

.uncertainty-band {
  fill: none;
  stroke-width: 128px;
  stroke-linecap: round;
  opacity: .3;
  mix-blend-mode: screen;
  transition: stroke-width 180ms linear, opacity 180ms linear;
}

.band-livingston {
  stroke: var(--mint);
}

.band-hanford {
  stroke: var(--cyan);
}

.band-virgo {
  stroke: var(--violet);
}

.candidate-field circle {
  fill: none;
  stroke: rgba(222, 233, 225, .4);
  stroke-width: 1.2;
  opacity: .55;
  transition: opacity 380ms ease;
}

.localized-region {
  opacity: 0;
  transform: scale(3.6);
  transform-origin: 594px 245px;
  transition: opacity 700ms ease 500ms, transform 1.15s cubic-bezier(.2, .75, .2, 1) 240ms;
}

.localization-halo {
  fill: rgba(243, 184, 107, .08);
  stroke: rgba(243, 184, 107, .25);
  stroke-width: 1;
}

.localization-ring {
  fill: none;
  stroke: var(--amber);
}

.localization-ring.outer {
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.localization-ring.inner {
  stroke-width: 1.4;
}

.host-point {
  fill: var(--amber-pale);
}

.host-leader {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1;
}

.host-name {
  fill: var(--amber-pale);
  font-family: var(--serif);
  font-size: 19px;
}

.host-detail {
  fill: var(--amber);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
}

.sky-legend {
  position: absolute;
  top: .8rem;
  left: .8rem;
  display: flex;
  gap: .8rem;
  padding: .45rem .55rem;
  border: 1px solid var(--line);
  background: rgba(7, 17, 23, .76);
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .55rem;
}

.sky-legend span {
  display: flex;
  align-items: center;
  gap: .28rem;
}

.legend-line {
  display: block;
  width: 1rem;
  height: 3px;
}

.legend-line.livingston { background: var(--mint); }
.legend-line.hanford { background: var(--cyan); }
.legend-line.virgo { background: var(--violet); }

.localized-copy {
  position: absolute;
  right: 1.2rem;
  bottom: 1.2rem;
  width: min(17rem, 52%);
  padding: 1rem 1.1rem;
  border-left: 1px solid var(--amber);
  background: linear-gradient(90deg, rgba(7, 17, 23, .92), rgba(7, 17, 23, .55));
  opacity: 0;
  transform: translateY(1rem);
  pointer-events: none;
  transition: opacity 600ms ease 850ms, transform 600ms ease 850ms;
}

.resolved-label {
  margin: 0 0 .55rem;
  color: var(--amber);
  font-family: var(--mono);
  font-size: .57rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.resolved-place {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1;
}

.resolved-place span {
  color: var(--paper-soft);
  font-family: var(--mono);
  font-size: .55rem;
  letter-spacing: .05em;
}

.sky-caption {
  flex: 1;
  min-height: 8.4rem;
  padding-top: 1.25rem;
}

.sky-status {
  max-width: 35rem;
  margin: 0;
  color: var(--paper-dim);
  font-family: var(--serif);
  font-size: .92rem;
  line-height: 1.5;
}

.sky-status span {
  color: var(--paper);
}

.deep-time {
  display: none;
  grid-template-columns: minmax(15rem, 1fr) minmax(18rem, 1fr);
  gap: 1rem 2.5rem;
  align-items: start;
}

.coda-lead {
  grid-row: span 2;
  margin: 0;
  color: var(--paper);
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2vw, 2rem);
  line-height: 1.1;
  text-wrap: balance;
}

.arrival-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.arrival-pair p {
  position: relative;
  margin: 0;
  padding-left: 1rem;
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .56rem;
  line-height: 1.55;
}

.arrival-pair strong {
  color: var(--paper-soft);
  font-weight: 500;
}

.arrival-mark {
  position: absolute;
  top: .2rem;
  left: 0;
  width: 4px;
  height: 1.8rem;
  background: var(--mint);
}

.arrival-mark.gamma {
  background: var(--amber);
}

.science-note {
  margin: 0;
  color: var(--paper-dim);
  font-size: .6rem;
  line-height: 1.5;
}

.replay-button {
  grid-column: 2;
  justify-self: start;
  min-height: 2.75rem;
  padding: 0 1rem;
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.replay-button:hover {
  background: var(--amber-pale);
}

.is-localized .uncertainty-band {
  stroke-width: 8px !important;
  opacity: .035 !important;
  transition: stroke-width 1.35s cubic-bezier(.2, .75, .2, 1), opacity 1.2s ease;
}

.is-localized .localization-halo {
  fill: rgba(243, 184, 107, .18);
  stroke: rgba(255, 213, 157, .7);
  filter: drop-shadow(0 0 18px rgba(243, 184, 107, .26));
}

.is-localized .host-point {
  r: 6px;
}

.is-localized .candidate-field circle {
  opacity: .1;
}

.is-localized .localized-region {
  opacity: 1;
  transform: scale(1);
}

.is-localized .localized-copy {
  opacity: 1;
  transform: translateY(0);
}

.is-localized .sky-status {
  display: none;
}

.is-localized .deep-time {
  display: grid;
  animation: coda-in 650ms ease 500ms both;
}

.is-localized .triangulate-button {
  color: var(--paper-dim);
  background: rgba(117, 138, 136, .1);
}

@keyframes coda-in {
  from { opacity: 0; transform: translateY(.6rem); }
  to { opacity: 1; transform: translateY(0); }
}

.page-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  width: min(100% - 4rem, 1560px);
  margin: 0 auto;
  padding: 2.2rem 0 3.5rem;
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: .61rem;
  line-height: 1.6;
}

.page-footer p {
  margin: 0;
}

.page-footer a {
  color: var(--paper-soft);
  text-underline-offset: .25em;
  text-decoration-color: rgba(174, 189, 185, .45);
}

.page-footer a:hover {
  color: var(--amber-pale);
}

@media (max-width: 1100px) {
  .masthead {
    width: min(100% - 2.5rem, 1000px);
  }

  .intro-grid {
    grid-template-columns: 9rem 1fr;
  }

  .intro-grid .premise {
    grid-column: 2;
  }

  .workspace {
    grid-template-columns: minmax(22rem, .78fr) minmax(30rem, 1.22fr);
  }

  .deep-time {
    grid-template-columns: 1fr;
  }

  .coda-lead {
    grid-row: auto;
  }

  .replay-button {
    grid-column: 1;
  }
}

@media (max-width: 820px) {
  .masthead {
    padding-bottom: 2rem;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 2.5rem;
  }

  .intro-grid .premise {
    grid-column: auto;
    max-width: 38rem;
  }

  h1 {
    font-size: clamp(3.3rem, 15vw, 6rem);
  }

  .workspace {
    grid-template-columns: 1fr;
    width: min(100% - 1.25rem, 680px);
  }

  .records-panel {
    border-top: 1px solid var(--line-strong);
    border-right: 0;
  }

  .sky-panel {
    order: 0;
  }

  .atlas {
    min-height: 25rem;
    aspect-ratio: auto;
  }

  .page-footer {
    grid-template-columns: 1fr;
    width: min(100% - 2.5rem, 680px);
    gap: .75rem;
  }
}

@media (max-width: 520px) {
  .masthead {
    width: calc(100% - 1.5rem);
    padding-top: .75rem;
  }

  .edition {
    font-size: .58rem;
  }

  h1 {
    font-size: clamp(3.25rem, 16.5vw, 5rem);
    line-height: .88;
  }

  .premise {
    font-size: 1rem;
  }

  .workspace {
    width: calc(100% - .75rem);
    border-left-color: rgba(203, 220, 214, .22);
    border-right-color: rgba(203, 220, 214, .22);
  }

  .records-panel,
  .sky-panel {
    padding: 1rem;
  }

  .panel-heading,
  .sky-heading {
    min-height: 4.3rem;
    margin-bottom: .8rem;
  }

  .sky-heading h2 {
    max-width: 10rem;
  }

  .confidence-block {
    width: 8.6rem;
  }

  .atlas {
    min-height: 22.2rem;
  }

  .sky-map {
    width: 155%;
    max-width: none;
    transform: translateX(-27%);
  }

  .sky-legend {
    top: .6rem;
    left: .6rem;
  }

  .localized-copy {
    right: .7rem;
    bottom: .7rem;
    width: calc(100% - 1.4rem);
  }

  .sky-caption {
    min-height: 7rem;
  }

  .deep-time {
    gap: 1.1rem;
  }

  .coda-lead {
    font-size: 1.42rem;
  }

  .arrival-pair {
    gap: .5rem;
  }

  .trace-heading {
    padding: .8rem .85rem .25rem;
  }

  .detector-place {
    max-width: 7rem;
    text-align: right;
  }

  .waveform-frame {
    height: 5.4rem;
    margin: 0 .55rem;
  }

  .trace-control {
    padding: .15rem .85rem .8rem;
  }

  .keyboard-note {
    align-items: flex-start;
  }

  .page-footer {
    width: calc(100% - 1.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-delay: 0ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}