:root {
  --bg-0: #02050b;
  --bg-1: rgba(7, 13, 20, 0.68);
  --bg-2: rgba(11, 20, 32, 0.84);
  --bg-3: rgba(10, 18, 29, 0.48);
  --panel-edge: rgba(122, 198, 245, 0.18);
  --panel-soft: rgba(255, 255, 255, 0.04);
  --text-0: #f4f7fb;
  --text-1: rgba(231, 240, 252, 0.78);
  --text-2: rgba(200, 216, 235, 0.56);
  --cyan: #82ebff;
  --cyan-soft: rgba(130, 235, 255, 0.16);
  --amber: #ff9a3d;
  --amber-soft: rgba(255, 154, 61, 0.16);
  --shadow: 0 16px 54px rgba(0, 0, 0, 0.3);
  --radius-l: 1.18rem;
  --radius-m: 0.92rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 18%, rgba(26, 58, 90, 0.16), transparent 28%),
    radial-gradient(circle at 88% 20%, rgba(255, 154, 61, 0.08), transparent 32%),
    linear-gradient(180deg, #02050b 0%, #040911 48%, #07111c 100%);
  color: var(--text-0);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

body {
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: radial-gradient(circle at center, black 38%, transparent 100%);
}

body::after {
  background:
    radial-gradient(circle at center, rgba(130, 235, 255, 0.06), transparent 38%),
    radial-gradient(circle at 68% 26%, rgba(255, 154, 61, 0.06), transparent 30%);
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hud {
  position: fixed;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 2;
  display: grid;
  gap: 0.62rem;
  width: min(22rem, calc(100vw - 1.7rem));
  max-height: calc(100vh - 1.7rem);
  overflow: auto;
  padding-right: 0.18rem;
  pointer-events: none;
  transition:
    width 220ms ease,
    gap 220ms ease,
    opacity 220ms ease;
}

.hud::-webkit-scrollbar {
  width: 0.45rem;
}

.hud::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

.cluster {
  position: relative;
  overflow: hidden;
  padding: 0.84rem 0.88rem 0.9rem;
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-l);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012)),
    linear-gradient(135deg, rgba(130, 235, 255, 0.045), transparent 44%),
    linear-gradient(315deg, rgba(255, 154, 61, 0.04), transparent 30%),
    var(--bg-1);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
  pointer-events: auto;
  transition:
    opacity 220ms ease,
    transform 220ms ease,
    border-color 220ms ease,
    background 220ms ease;
}

.cluster::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(130, 235, 255, 0.08), transparent 16%),
    linear-gradient(0deg, rgba(255, 154, 61, 0.05), transparent 22%);
  opacity: 0.85;
}

.overview {
  padding-bottom: 0.82rem;
}

.identity,
.mode-strip,
.phase-track,
.hint,
.section-head,
.progress-stack,
.telemetry-grid,
.control {
  position: relative;
  z-index: 1;
}

.eyebrow,
.kicker {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
  font-size: 0.67rem;
  font-weight: 600;
}

.identity-row {
  display: flex;
  justify-content: space-between;
  gap: 0.72rem;
  align-items: flex-start;
  margin-top: 0.42rem;
}

h1,
h2 {
  margin: 0;
  font-family: "Avenir Next Condensed", "Arial Narrow", sans-serif;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 0.94;
}

h1 {
  font-size: clamp(1.9rem, 4.8vw, 3.1rem);
  text-transform: uppercase;
  white-space: nowrap;
}

h2 {
  font-size: 1.14rem;
}

.lede {
  margin: 0.44rem 0 0;
  color: var(--text-1);
  font-size: 0.85rem;
  line-height: 1.42;
  max-width: 13.5rem;
}

.phase-chip {
  min-width: 5.2rem;
  padding: 0.46rem 0.56rem 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-m);
  background:
    linear-gradient(135deg, rgba(130, 235, 255, 0.08), rgba(255, 154, 61, 0.08)),
    rgba(255, 255, 255, 0.03);
  text-align: left;
}

.phase-chip span {
  display: block;
  margin-bottom: 0.22rem;
  color: var(--text-2);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.phase-chip strong {
  display: block;
  color: var(--text-0);
  font-size: 0.92rem;
  letter-spacing: 0.03em;
}

.mode-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.56rem;
  margin-top: 0.78rem;
}

.segmented,
.action-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 0.62rem 0.9rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(7, 13, 20, 0.76);
  color: var(--text-0);
  font: inherit;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease,
    opacity 180ms ease;
}

button:hover,
button:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(130, 235, 255, 0.28);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  outline: none;
}

.mode-button {
  min-width: 5rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015)),
    rgba(6, 12, 20, 0.78);
}

.mode-button.is-active,
.mode-button[aria-pressed="true"] {
  border-color: rgba(130, 235, 255, 0.34);
  background:
    linear-gradient(135deg, rgba(130, 235, 255, 0.18), rgba(255, 154, 61, 0.12)),
    rgba(13, 24, 36, 0.9);
}

.action-button {
  color: var(--text-1);
}

.phase-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.4rem;
  list-style: none;
  margin: 0.78rem 0 0;
  padding: 0;
}

.phase-track li {
  padding: 0.4rem 0.44rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.7rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.03);
  transition:
    color 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.phase-track li.is-complete {
  color: var(--text-1);
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
}

.phase-track li.is-active {
  color: var(--text-0);
  border-color: rgba(130, 235, 255, 0.3);
  background:
    linear-gradient(135deg, rgba(130, 235, 255, 0.15), rgba(255, 154, 61, 0.1)),
    rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}

.hint {
  margin: 0.72rem 0 0;
  color: var(--text-2);
  font-size: 0.78rem;
  line-height: 1.45;
}

.hint span {
  display: inline-block;
  margin: 0 0.12rem;
  padding: 0.08rem 0.38rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--amber);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 0.64rem;
  align-items: flex-end;
}

.section-head p {
  margin: 0;
  max-width: 8.8rem;
  color: var(--text-2);
  font-size: 0.72rem;
  line-height: 1.4;
  text-align: right;
}

.controls-panel,
.telemetry-panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.01)),
    linear-gradient(135deg, rgba(130, 235, 255, 0.035), transparent 48%),
    linear-gradient(315deg, rgba(255, 154, 61, 0.03), transparent 34%),
    var(--bg-3);
  transform-origin: top left;
}

.control {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.42rem 0.7rem;
  align-items: center;
  margin-top: 0.8rem;
}

.control span {
  color: var(--text-0);
  font-size: 0.84rem;
}

.control output {
  color: rgba(255, 225, 185, 0.88);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.control input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  grid-column: 1 / -1;
  width: 100%;
  height: 1.2rem;
  background: transparent;
}

.control input[type="range"]::-webkit-slider-runnable-track {
  height: 0.2rem;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(130, 235, 255, 0.7), rgba(255, 154, 61, 0.7)),
    rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.control input[type="range"]::-moz-range-track {
  height: 0.2rem;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(130, 235, 255, 0.7), rgba(255, 154, 61, 0.7)),
    rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 0.92rem;
  height: 0.92rem;
  margin-top: -0.36rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.92), rgba(130, 235, 255, 0.9)),
    rgba(130, 235, 255, 0.9);
  box-shadow:
    0 0 0 0.18rem rgba(130, 235, 255, 0.08),
    0 0 22px rgba(130, 235, 255, 0.22);
}

.control input[type="range"]::-moz-range-thumb {
  width: 0.92rem;
  height: 0.92rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.92), rgba(130, 235, 255, 0.9)),
    rgba(130, 235, 255, 0.9);
  box-shadow:
    0 0 0 0.18rem rgba(130, 235, 255, 0.08),
    0 0 22px rgba(130, 235, 255, 0.22);
}

.progress-stack {
  margin-top: 0.82rem;
}

.progress-labels {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  color: var(--text-1);
  font-size: 0.82rem;
}

.progress-labels output {
  color: var(--text-0);
  font-variant-numeric: tabular-nums;
}

.progress-bar {
  overflow: hidden;
  height: 0.34rem;
  margin-top: 0.45rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.progress-bar span {
  display: block;
  width: 100%;
  height: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), rgba(255, 255, 255, 0.95), var(--amber));
  box-shadow: 0 0 16px rgba(130, 235, 255, 0.26);
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.58rem;
  margin: 0.82rem 0 0;
}

.telemetry-grid div {
  padding: 0.62rem 0.66rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-m);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
    rgba(255, 255, 255, 0.01);
}

.telemetry-grid dt {
  margin-bottom: 0.34rem;
  color: var(--text-2);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.telemetry-grid dd {
  margin: 0;
  color: var(--text-0);
  font-size: 0.92rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.hud[data-mode="transit"] .controls-panel,
.hud[data-mode="transit"] .telemetry-panel {
  opacity: 0.52;
  transform: translateX(-0.14rem) scale(0.985);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.22);
}

.hud[data-mode="transit"] .controls-panel:hover,
.hud[data-mode="transit"] .controls-panel:focus-within,
.hud[data-mode="transit"] .telemetry-panel:hover,
.hud[data-mode="transit"] .telemetry-panel:focus-within {
  opacity: 1;
  transform: translateX(0) scale(1);
}

.hud[data-mode="transit"][data-phase="entry"] .controls-panel,
.hud[data-mode="transit"][data-phase="entry"] .telemetry-panel,
.hud[data-mode="transit"][data-phase="transit"] .controls-panel,
.hud[data-mode="transit"][data-phase="transit"] .telemetry-panel {
  opacity: 0.34;
  transform: translateX(-0.22rem) scale(0.97);
}

.hud[data-mode="transit"] .overview {
  transition:
    opacity 220ms ease,
    transform 220ms ease,
    background 220ms ease;
}

.hud[data-mode="transit"][data-phase="entry"] .overview,
.hud[data-mode="transit"][data-phase="transit"] .overview {
  opacity: 0.74;
}

.hud[data-mode="transit"][data-focus="scene"] .hint,
.hud[data-mode="transit"][data-focus="scene"] .section-head p {
  opacity: 0.34;
}

.hud[data-mode="transit"][data-phase="transit"] .hint {
  opacity: 0.22;
}

.hud[data-mode="transit"][data-phase="transit"] .telemetry-grid div,
.hud[data-mode="transit"][data-phase="entry"] .telemetry-grid div {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.018), rgba(255, 255, 255, 0.008)),
    rgba(255, 255, 255, 0.008);
}

.hud[data-phase="transit"] .overview,
.hud[data-phase="exit"] .overview {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.01)),
    linear-gradient(135deg, rgba(130, 235, 255, 0.03), transparent 50%),
    linear-gradient(315deg, rgba(255, 154, 61, 0.026), transparent 32%),
    rgba(5, 10, 18, 0.56);
}

.hud[data-mode="transit"][data-focus="scene"] {
  width: min(17rem, calc(100vw - 1.7rem));
  gap: 0;
  overflow: visible;
}

.hud[data-mode="transit"][data-focus="scene"] .overview {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.008)),
    linear-gradient(135deg, rgba(130, 235, 255, 0.022), transparent 52%),
    linear-gradient(315deg, rgba(255, 154, 61, 0.02), transparent 36%),
    rgba(5, 10, 18, 0.42);
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.2);
}

.hud[data-mode="transit"][data-focus="scene"] .action-strip,
.hud[data-mode="transit"][data-focus="scene"] .phase-track,
.hud[data-mode="transit"][data-focus="scene"] .hint {
  display: none;
}

.hud[data-mode="transit"][data-focus="scene"] .mode-strip {
  margin-top: 0.58rem;
}

.hud[data-mode="transit"][data-focus="scene"] .controls-panel,
.hud[data-mode="transit"][data-focus="scene"] .telemetry-panel {
  display: none;
}

@media (max-width: 820px) {
  .hud {
    top: 0.64rem;
    left: 0.64rem;
    width: min(21rem, calc(100vw - 1.28rem));
    max-height: calc(100vh - 1.4rem);
  }

  .hud[data-mode="transit"][data-focus="scene"] {
    width: min(15.75rem, calc(100vw - 1.28rem));
  }

  .identity-row,
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-head p {
    max-width: none;
    text-align: left;
  }
}

@media (max-width: 620px) {
  .hud {
    gap: 0.5rem;
    width: calc(100vw - 0.85rem);
    top: 0.42rem;
    left: 0.42rem;
    max-height: calc(100vh - 0.84rem);
  }

  .hud[data-mode="transit"][data-focus="scene"] {
    width: min(14.1rem, calc(100vw - 0.85rem));
  }

  .cluster {
    padding: 0.74rem 0.78rem 0.8rem;
  }

  .overview {
    padding-bottom: 0.72rem;
  }

  .identity-row {
    flex-direction: row;
    align-items: flex-start;
    gap: 0.56rem;
    margin-top: 0.34rem;
  }

  .identity-row > div:first-child {
    min-width: 0;
  }

  h1 {
    font-size: clamp(1.52rem, 8.7vw, 2.26rem);
    white-space: normal;
    max-width: 7.6ch;
    line-height: 0.92;
  }

  .eyebrow,
  .kicker {
    font-size: 0.62rem;
  }

  h2 {
    font-size: 1.03rem;
  }

  .lede {
    margin-top: 0.32rem;
    max-width: 10.8rem;
    font-size: 0.76rem;
    line-height: 1.34;
  }

  .phase-chip {
    min-width: 4.65rem;
    padding: 0.38rem 0.46rem 0.42rem;
  }

  .phase-chip span {
    margin-bottom: 0.16rem;
    font-size: 0.62rem;
  }

  .phase-chip strong {
    font-size: 0.82rem;
  }

  .mode-strip {
    flex-direction: column;
    align-items: stretch;
    gap: 0.42rem;
    margin-top: 0.66rem;
  }

  .segmented,
  .action-strip {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.42rem;
  }

  .segmented button,
  .action-strip button {
    width: 100%;
  }

  button {
    padding: 0.56rem 0.68rem;
    font-size: 0.84rem;
  }

  .phase-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.34rem;
    margin-top: 0.66rem;
  }

  .phase-track li {
    padding: 0.35rem 0.36rem;
    font-size: 0.66rem;
  }

  .lede {
    max-width: 10.8rem;
  }

  .hint {
    margin-top: 0.56rem;
    font-size: 0.72rem;
    line-height: 1.35;
  }

  .hint span {
    margin: 0 0.08rem;
    padding: 0.06rem 0.32rem;
  }

  .section-head {
    gap: 0.46rem;
  }

  .section-head p {
    font-size: 0.68rem;
    line-height: 1.32;
  }

  .control {
    gap: 0.36rem 0.58rem;
    margin-top: 0.7rem;
  }

  .control span,
  .control output,
  .progress-labels {
    font-size: 0.78rem;
  }

  .control input[type="range"]::-webkit-slider-thumb,
  .control input[type="range"]::-moz-range-thumb {
    width: 0.86rem;
    height: 0.86rem;
  }

  .progress-stack {
    margin-top: 0.7rem;
  }

  .telemetry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.44rem;
    margin-top: 0.7rem;
  }

  .telemetry-grid div {
    padding: 0.52rem 0.56rem;
  }

  .telemetry-grid dt {
    margin-bottom: 0.26rem;
    font-size: 0.62rem;
  }

  .telemetry-grid dd {
    font-size: 0.82rem;
  }

  .hud[data-mode="transit"] .controls-panel,
  .hud[data-mode="transit"] .telemetry-panel {
    opacity: 0.44;
  }
}

@media (max-width: 420px) {
  .hud {
    gap: 0.44rem;
    width: calc(100vw - 0.5rem);
    top: 0.25rem;
    left: 0.25rem;
    max-height: calc(100vh - 0.5rem);
  }

  .hud[data-mode="transit"][data-focus="scene"] {
    width: min(13.3rem, calc(100vw - 0.5rem));
  }

  .cluster {
    padding: 0.66rem 0.68rem 0.72rem;
  }

  .identity-row {
    gap: 0.44rem;
  }

  h1 {
    font-size: clamp(1.4rem, 8vw, 1.94rem);
    max-width: 7ch;
  }

  .lede {
    max-width: 9.8rem;
    font-size: 0.72rem;
  }

  .phase-chip {
    min-width: 4.35rem;
    padding-inline: 0.42rem;
  }

  button {
    min-height: 2.2rem;
    padding: 0.5rem 0.56rem;
    font-size: 0.8rem;
  }

  .hint {
    font-size: 0.69rem;
  }

  .telemetry-grid dd {
    font-size: 0.78rem;
  }
}