:root {
  --bg-1: #04070d;
  --bg-2: #081421;
  --ice: #d8f2ff;
  --cyan: #7ce6ff;
  --cyan-2: #2bbad6;
  --amber: #ffcc55;
  --amber-2: #f8891f;
  --alert: #ff5c62;
  --ink: rgba(235, 248, 255, 0.92);
  --panel: rgba(7, 17, 31, 0.72);
  --panel-2: rgba(9, 26, 44, 0.85);
  --line: rgba(154, 228, 255, 0.22);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 50% 5%, rgba(54, 109, 181, 0.45), transparent 26rem),
    linear-gradient(180deg, var(--bg-2), var(--bg-1));
  color: var(--ink);
  font-family: "Trebuchet MS", Verdana, Arial, sans-serif;
}

body {
  overflow-y: auto;
  overflow-x: hidden;
}

.intro-shell {
  position: relative;
  min-height: 100vh;
  padding: 1.25rem;
}

.starfield,
.noise-layer,
.scanline-layer,
.radar-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.starfield {
  opacity: 0.92;
}

.noise-layer {
  opacity: 0.1;
  mix-blend-mode: screen;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.16) 0 1px, transparent 1px),
    radial-gradient(circle at 72% 68%, rgba(255,255,255,0.08) 0 1px, transparent 1px),
    radial-gradient(circle at 42% 84%, rgba(255,255,255,0.14) 0 1px, transparent 1px);
  background-size: 17px 17px, 29px 29px, 23px 23px;
  animation: noise-drift 0.35s steps(2) infinite;
}

.scanline-layer {
  opacity: 0.18;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.08) 0 1px,
      transparent 1px 4px
    );
}

.radar-layer {
  background:
    linear-gradient(90deg, transparent 0 42%, rgba(122, 228, 255, 0.08) 48%, transparent 54%),
    radial-gradient(circle at 76% 30%, rgba(54, 132, 207, 0.18), transparent 18rem);
  mix-blend-mode: screen;
  animation: radar-sweep 8s linear infinite;
}

.topbar,
.controls,
.telemetry-panel,
.caption-box,
.warning-card {
  position: relative;
  z-index: 2;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.channel-bug {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  border: 1px solid rgba(255,255,255,0.35);
  background:
    linear-gradient(180deg, rgba(255, 211, 104, 0.95), rgba(240, 132, 31, 0.95));
  color: #1a0d00;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 0 22px rgba(255, 169, 52, 0.3);
}

.kicker {
  margin: 0 0 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--cyan);
}

.brand h1,
.caption-box h2,
.telemetry-panel p,
.telemetry-panel dl,
.warning-card p {
  margin: 0;
}

.brand h1 {
  font-size: clamp(1.7rem, 2.8vw, 3rem);
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.94rem;
}

.pill {
  padding: 0.4rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255, 92, 98, 0.16);
  color: #ffe4e4;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

.viewport {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) 360px;
  gap: 1rem;
  align-items: stretch;
  min-height: calc(100vh - 13rem);
}

.projection {
  position: relative;
  min-height: 100%;
  padding: 1rem;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(5, 17, 31, 0.72), rgba(4, 9, 18, 0.82));
  overflow: hidden;
  box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.45);
}

.scene-frame {
  position: absolute;
  inset: 1rem;
  overflow: hidden;
  border: 1px solid rgba(201, 240, 255, 0.18);
  background: #000;
}

.scene-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  filter:
    saturate(1.08)
    contrast(1.05)
    brightness(0.8)
    sepia(0.12)
    hue-rotate(-10deg);
  transition: opacity 900ms ease, transform 900ms ease, filter 900ms ease;
}

.scene-frame.scene-change img {
  opacity: 0.16;
  transform: scale(1.12);
  filter: blur(4px) brightness(1.2) saturate(1.3);
}

.projection-overlay {
  position: absolute;
  inset: 1.2rem 1.2rem 8.6rem 1.2rem;
  display: none;
  flex-direction: column;
  gap: 0.9rem;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(3, 10, 20, 0.78), rgba(4, 12, 23, 0.88));
  border: 1px solid rgba(124, 230, 255, 0.18);
  backdrop-filter: blur(2px);
  z-index: 1;
}

.projection-overlay.is-active {
  display: flex;
}

.projection.detail-mode .projection-overlay {
  inset: 1.2rem;
}

.projection.detail-mode .caption-box {
  display: none;
}

.projection.detail-mode .warning-card {
  display: none;
}

.overlay-head {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  align-items: flex-start;
}

.overlay-kicker,
.overlay-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--cyan);
}

.overlay-head h3 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 2rem);
  text-transform: uppercase;
}

.overlay-warning {
  display: block;
  width: min(100%, 30rem);
  max-width: 30rem;
  margin: 0.5rem 0 0.15rem;
  padding: 0.45rem 0.65rem;
  border: 1px solid rgba(255, 204, 85, 0.24);
  background: linear-gradient(180deg, rgba(61, 26, 4, 0.68), rgba(34, 13, 4, 0.76));
  color: rgba(255, 237, 214, 0.95);
  font-size: 0.88rem;
  line-height: 1.35;
}

.projection-canvas {
  width: 100%;
  height: clamp(220px, 32vh, 360px);
  display: block;
  border: 1px solid rgba(124, 230, 255, 0.14);
  background: radial-gradient(circle at 50% 50%, rgba(25, 74, 126, 0.18), rgba(1, 4, 10, 0.95));
}

.overlay-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.overlay-card {
  min-width: 0;
  padding: 0.8rem 0.9rem;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(4, 10, 18, 0.82);
}

.overlay-card-wide {
  grid-column: 1 / -1;
}

.overlay-list {
  margin: 0.55rem 0 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.45rem;
  font-size: 0.92rem;
}

.overlay-summary {
  margin: 0.55rem 0 0;
  font-size: 0.96rem;
  line-height: 1.5;
  color: rgba(228, 244, 255, 0.92);
}

.projection.detail-mode .overlay-list {
  gap: 0.35rem;
  font-size: 0.88rem;
}

.projection.detail-mode .overlay-summary {
  font-size: 0.92rem;
  line-height: 1.42;
}

.scene-flare,
.scene-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.scene-flare {
  background:
    linear-gradient(115deg, transparent 0 55%, rgba(255,255,255,0.18) 64%, transparent 72%),
    radial-gradient(circle at 82% 14%, rgba(255,255,255,0.16), transparent 14rem);
  mix-blend-mode: screen;
}

.scene-vignette {
  box-shadow: inset 0 0 160px rgba(0, 0, 0, 0.8);
}

.warning-card {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: min(22rem, calc(100% - 3rem));
  padding: 0.95rem 1rem;
  border: 1px solid rgba(255, 204, 85, 0.3);
  background: linear-gradient(180deg, rgba(61, 26, 4, 0.88), rgba(34, 13, 4, 0.9));
  box-shadow: 0 0 24px rgba(255, 149, 29, 0.14);
}

.warning-label,
.caption-type,
.panel-label {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
}

.warning-label {
  color: var(--amber);
  margin-bottom: 0.35rem;
}

.caption-box {
  position: absolute;
  left: 1.5rem;
  bottom: 1.5rem;
  width: min(42rem, calc(100% - 3rem));
  padding: 1.15rem 1.2rem 1.25rem;
  background: linear-gradient(180deg, rgba(5, 16, 29, 0.86), rgba(4, 10, 18, 0.94));
  border: 1px solid rgba(124, 230, 255, 0.2);
  backdrop-filter: blur(5px);
}

.caption-type {
  color: var(--cyan);
  margin-bottom: 0.35rem;
}

.caption-box h2 {
  font-size: clamp(1.8rem, 3vw, 3.3rem);
  line-height: 0.95;
  margin-bottom: 0.55rem;
  text-transform: uppercase;
}

.caption-box p {
  max-width: 46rem;
  margin: 0;
  font-size: 1rem;
  color: rgba(230, 245, 255, 0.88);
}

.telemetry {
  display: grid;
  gap: 1rem;
}

.telemetry-panel {
  padding: 1rem;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
}

.panel-label {
  color: var(--cyan);
  margin-bottom: 0.7rem;
}

.source-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.source-list li,
.axis-list li {
  padding-left: 1rem;
  position: relative;
}

.source-list li::before,
.axis-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--amber);
  box-shadow: 0 0 10px rgba(255, 204, 85, 0.4);
}

.dimension-panel {
  display: none;
}

.dimension-panel.is-active {
  display: block;
}

.vector-space-viz {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 0.85rem;
  border: 1px solid rgba(124, 230, 255, 0.18);
  background:
    radial-gradient(circle at 50% 50%, rgba(29, 79, 138, 0.32), rgba(3, 7, 12, 0.94));
}

.dimension-narrative {
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
  color: rgba(222, 243, 255, 0.92);
}

.axis-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.48rem;
  font-size: 0.9rem;
}

.quote {
  font-size: 1.02rem;
  line-height: 1.55;
}

.stats {
  display: grid;
  gap: 0.7rem;
}

.stats div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.stats dt {
  color: rgba(170, 216, 232, 0.78);
}

.stats dd {
  margin: 0;
  font-weight: 700;
}

.controls {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
}

.scene-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.scene-nav-button {
  appearance: none;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(8, 20, 37, 0.72);
  color: rgba(221, 241, 255, 0.92);
  font: inherit;
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  min-width: 2.6rem;
}

.scene-nav-button:hover,
.scene-nav-button:focus-visible {
  border-color: rgba(124, 230, 255, 0.45);
}

.scene-nav-button.is-active {
  border-color: rgba(255, 204, 85, 0.55);
  background: linear-gradient(180deg, rgba(48, 74, 110, 0.92), rgba(15, 31, 55, 0.94));
  color: #fff2c4;
}

.control-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.control-group button,
.enter-link {
  appearance: none;
  border: 1px solid rgba(255,255,255,0.24);
  background: linear-gradient(180deg, rgba(15, 41, 70, 0.95), rgba(8, 20, 37, 0.95));
  color: var(--ice);
  font: inherit;
  text-decoration: none;
  padding: 0.8rem 1rem;
  cursor: pointer;
}

.control-group button:hover,
.control-group button:focus-visible,
.enter-link:hover,
.enter-link:focus-visible {
  border-color: rgba(124, 230, 255, 0.45);
  box-shadow: 0 0 0 1px rgba(124, 230, 255, 0.24) inset;
}

.ticker-wrap {
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.14);
  background: linear-gradient(180deg, rgba(17, 42, 67, 0.95), rgba(6, 12, 20, 0.95));
}

.ticker-track {
  display: inline-flex;
  gap: 2.2rem;
  white-space: nowrap;
  padding: 0.85rem 0;
  min-width: max-content;
  animation: ticker 26s linear infinite;
}

.ticker-item {
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.8rem;
}

@keyframes radar-sweep {
  from { transform: translateX(-14%); }
  to { transform: translateX(14%); }
}

@keyframes noise-drift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(-2px, 1px); }
  100% { transform: translate(2px, -1px); }
}

@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (max-width: 1080px) {
  .viewport {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .projection {
    min-height: 70vh;
  }

  .telemetry {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .scene-nav {
    gap: 0.45rem;
  }
}

@media (max-width: 700px) {
  .intro-shell {
    padding: 0.8rem;
  }

  .topbar,
  .brand,
  .topbar-status,
  .control-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .projection {
    min-height: 78vh;
  }

  .projection-overlay {
    inset: 1rem 1rem 10.5rem 1rem;
  }

  .projection.detail-mode .projection-overlay {
    inset: 1rem;
  }

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

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

  .caption-box,
  .warning-card {
    width: calc(100% - 2rem);
  }
}