:root {
  color-scheme: dark;
  --bg: #05090b;
  --surface: #071217;
  --surface-2: #0a181e;
  --line: #17343c;
  --line-strong: #28616a;
  --text: #edf7f6;
  --muted: #94adb2;
  --quiet: #68848a;
  --accent: #43e0cd;
  --accent-soft: rgba(67, 224, 205, 0.11);
  --amber: #f4bf5f;
  --red: #ff7474;
  --blue: #80adff;
  --violet: #be96ff;
  --header: 62px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 72% -12%, rgba(36, 115, 119, 0.15), transparent 36rem),
    var(--bg);
  color: var(--text);
  font: 14px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
select,
a,
input {
  font: inherit;
}

button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
select:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--text);
  color: var(--bg);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 clamp(16px, 3vw, 52px);
  border-bottom: 1px solid var(--line);
  background: rgba(5, 13, 16, 0.96);
  backdrop-filter: blur(18px);
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
  border: 2px solid var(--accent);
  transform: rotate(45deg);
}

.brand > span:last-child {
  min-width: 0;
  display: grid;
  line-height: 1.15;
}

.brand strong {
  font-size: 14px;
}

.brand small {
  color: var(--muted);
  font: 10px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.truth-strip {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font: 10px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.truth-strip strong {
  color: var(--amber);
}

.truth-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  background: var(--amber);
  box-shadow: 0 0 14px rgba(244, 191, 95, 0.48);
}

.observatory {
  width: min(1880px, 100%);
  margin: 0 auto;
  padding: 0 clamp(16px, 2.5vw, 46px) 60px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 48px;
  padding: 30px 0 24px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--accent);
  font: 10px/1.35 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 950px;
  margin-bottom: 10px;
  font-size: clamp(2rem, 4vw, 4.35rem);
  line-height: 0.98;
  letter-spacing: -0.048em;
}

.intro-copy {
  max-width: 880px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.coverage {
  display: grid;
  grid-template-columns: repeat(3, minmax(78px, 1fr));
  margin: 0;
  border: 1px solid var(--line);
  background: var(--surface);
}

.coverage div {
  min-width: 88px;
  padding: 12px 16px;
  border-right: 1px solid var(--line);
}

.coverage div:last-child {
  border-right: 0;
}

.coverage dt {
  color: var(--quiet);
  font: 9px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.coverage dd {
  margin: 3px 0 0;
  color: var(--text);
  font: 17px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.control-deck {
  position: sticky;
  top: var(--header);
  z-index: 15;
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) minmax(150px, 0.8fr) minmax(130px, 0.65fr) auto auto;
  align-items: end;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 9, 11, 0.95);
  backdrop-filter: blur(14px);
}

.control-deck label {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.control-deck label > span {
  color: var(--quiet);
  font: 9px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

select,
.view-switch,
.scene-link {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--surface);
  color: var(--text);
}

select {
  width: 100%;
  padding: 0 34px 0 11px;
}

.view-switch {
  display: flex;
  overflow: hidden;
}

.view-switch button {
  min-width: 78px;
  min-height: 40px;
  padding: 0 11px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.view-switch button:last-child {
  border-right: 0;
}

.view-switch button.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.scene-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 14px;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.scene-link:hover {
  border-color: var(--accent);
}

.workspace {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr) 310px;
  min-height: 680px;
  border-bottom: 1px solid var(--line);
}

.scene-rail,
.evidence {
  min-width: 0;
  background: var(--surface);
}

.scene-rail {
  border-right: 1px solid var(--line);
}

.evidence {
  border-left: 1px solid var(--line);
}

.panel-heading {
  min-height: 63px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

.panel-heading h2 {
  margin: 0;
  font-size: 13px;
  line-height: 1.25;
}

.panel-heading > span,
.stage-status {
  color: var(--quiet);
  font: 9px/1.35 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.scene-list {
  max-height: 616px;
  overflow: auto;
  scrollbar-color: var(--line-strong) transparent;
}

.scene-record {
  width: 100%;
  min-height: 74px;
  display: grid;
  align-content: center;
  gap: 5px;
  padding: 11px 13px;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.scene-record:hover {
  background: rgba(255, 255, 255, 0.025);
}

.scene-record.active {
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

.scene-record strong {
  overflow: hidden;
  font-size: 11px;
  line-height: 1.35;
  text-overflow: ellipsis;
}

.scene-record span {
  color: var(--quiet);
  font: 9px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.scene-record .manual {
  color: var(--accent);
}

.scene-record .auto,
.scene-record .unknown {
  color: var(--amber);
}

.trajectory-stage {
  min-width: 0;
  background: #030709;
}

.stage-heading {
  background: var(--surface);
}

.stage-status {
  display: grid;
  justify-items: end;
  gap: 3px;
}

.stage-status strong {
  color: var(--accent);
  font-weight: 600;
}

.canvas-wrap {
  position: relative;
  min-height: 550px;
}

#trajectory-canvas {
  width: 100%;
  height: 550px;
  display: block;
}

.canvas-legend {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  color: var(--muted);
  font: 9px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

.canvas-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.canvas-legend i {
  width: 20px;
  height: 2px;
  display: inline-block;
  background: var(--quiet);
}

.canvas-legend .legend-selected {
  background: var(--accent);
}

.canvas-legend .legend-cohort {
  background: var(--violet);
}

.plane-note {
  position: absolute;
  right: 14px;
  bottom: 12px;
  margin: 0;
  color: var(--quiet);
  font: 9px/1.35 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 5px;
  padding: 20px;
  background: rgba(3, 7, 9, 0.94);
  color: var(--muted);
  text-align: center;
}

.empty-state strong {
  color: var(--text);
}

.transport {
  min-height: 66px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 54px;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.transport button {
  min-width: 58px;
  min-height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}

.transport input {
  width: 100%;
  accent-color: var(--accent);
}

.transport output {
  color: var(--text);
  font: 10px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-align: right;
}

.evidence-list {
  margin: 0;
  padding: 10px 14px 14px;
  border-bottom: 1px solid var(--line);
}

.evidence-list div {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 10px;
  padding: 6px 0;
}

.evidence-list dt {
  color: var(--quiet);
  font-size: 10px;
}

.evidence-list dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--text);
  font: 10px/1.35 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-align: right;
}

.proxy-state {
  padding: 14px;
}

.section-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.section-label h3 {
  margin: 0;
  font-size: 11px;
}

.section-label span {
  color: var(--amber);
  font: 8px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

.proxy-glyph {
  position: relative;
  height: 88px;
  margin: 10px 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(transparent 49%, var(--line) 50%, transparent 51%),
    linear-gradient(90deg, transparent 49%, var(--line) 50%, transparent 51%);
}

.proxy-glyph i {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  border: 1px solid var(--accent);
  transform: translate(-50%, -50%) rotate(45deg);
}

#proxy-arrow {
  position: absolute;
  top: calc(50% - 1px);
  left: 50%;
  width: 36px;
  height: 2px;
  background: var(--amber);
  transform-origin: 0 50%;
}

#proxy-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--amber);
  border-right: 2px solid var(--amber);
  transform: rotate(45deg);
}

.state-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
}

.state-grid div {
  min-width: 0;
  padding: 8px;
  background: var(--surface-2);
}

.state-grid dt {
  color: var(--quiet);
  font: 8px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

.state-grid dd {
  margin: 3px 0 0;
  overflow: hidden;
  color: var(--text);
  font: 10px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-overflow: ellipsis;
}

.research-boundary {
  margin: 0 14px 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
}

.signals {
  margin-top: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
}

#signal-canvas {
  width: 100%;
  height: 220px;
  display: block;
  background: #030709;
}

.signal-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding: 9px 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 9px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

.signal-legend span::before {
  content: "";
  width: 15px;
  height: 2px;
  display: inline-block;
  margin-right: 6px;
  vertical-align: middle;
  background: var(--accent);
}

.signal-legend .accel::before {
  background: var(--amber);
}

.signal-legend .jerk::before {
  background: var(--red);
}

.signal-legend .curve::before {
  background: var(--violet);
}

footer {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 clamp(16px, 3vw, 52px);
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font: 9px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 1320px) {
  .workspace {
    grid-template-columns: 220px minmax(0, 1fr) 280px;
  }

  .control-deck {
    grid-template-columns: minmax(200px, 1.2fr) minmax(140px, 0.7fr) minmax(120px, 0.6fr) auto;
  }

  .scene-link {
    grid-column: 1 / -1;
    justify-self: end;
    min-height: 34px;
  }
}

@media (max-width: 1000px) {
  .workspace {
    grid-template-columns: 210px minmax(0, 1fr);
  }

  .evidence {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr);
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .evidence > .panel-heading,
  .evidence-list {
    grid-column: 1;
  }

  .proxy-state {
    grid-column: 2;
    grid-row: 1 / span 2;
    border-left: 1px solid var(--line);
  }

  .research-boundary {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  :root {
    --header: 56px;
  }

  .truth-strip span:last-child {
    display: none;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .coverage {
    width: 100%;
  }

  .control-deck {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .control-deck label:first-child,
  .view-switch,
  .scene-link {
    grid-column: 1 / -1;
  }

  .scene-link {
    justify-self: stretch;
    min-height: 42px;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .scene-rail {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .scene-list {
    max-height: none;
    display: flex;
    overflow-x: auto;
  }

  .scene-record {
    min-width: 210px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    border-left: 0;
    border-top: 2px solid transparent;
  }

  .scene-record.active {
    border-top-color: var(--accent);
    border-left: 0;
  }

  .canvas-wrap,
  #trajectory-canvas {
    min-height: 430px;
    height: 430px;
  }

  .evidence {
    display: block;
  }

  .proxy-state {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .plane-note {
    max-width: 65%;
    text-align: right;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 0 13px;
  }

  .brand strong {
    font-size: 12px;
  }

  .brand small {
    display: none;
  }

  .truth-strip {
    gap: 6px;
    font-size: 8px;
  }

  .observatory {
    padding: 0 13px 42px;
  }

  h1 {
    font-size: 2rem;
  }

  .intro-copy {
    font-size: 13px;
  }

  .coverage div {
    min-width: 0;
    padding: 10px;
  }

  .control-deck {
    grid-template-columns: 1fr;
  }

  .control-deck label,
  .control-deck label:first-child,
  .view-switch,
  .scene-link {
    grid-column: 1;
  }

  .view-switch button {
    min-width: 0;
    flex: 1;
  }

  .canvas-wrap,
  #trajectory-canvas {
    min-height: 360px;
    height: 360px;
  }

  .transport {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .transport output {
    grid-column: 1 / -1;
  }

  .state-grid {
    grid-template-columns: 1fr;
  }

  .signals .panel-heading > span {
    display: none;
  }

  #signal-canvas {
    height: 190px;
  }

  footer {
    min-height: 70px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 3px;
    padding: 12px 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}