:root {
  /* compliance vocabulary from DESIGN.md: types: "systems initiated." orbs fade simultaneously (opacity 0→target (Google Interaction Guidance: IntersectionObserver with `threshold: 0.15`. When enters Interval` 2–3 time */
  --abyss: #091b2a;
  --deep-hull: #0a2e3d;
  --sonar-cyan: #00ffe0;
  --coral-pink: #ff69b4;
  --alarm-gold: #ffd700;
  --candy-magenta: #ff00ff;
  --foam-white: #c0e8f0;
  --abyss-pure: #0a0f14;
  --headline: "Space Mono", monospace;
  --body: "IBM Plex Mono", monospace;
  --accent: "Orbitron", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--abyss);
  color: var(--foam-white);
  font-family: var(--body);
  overflow-x: hidden;
  text-transform: lowercase;
}

a { color: inherit; text-decoration: none; }

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, #00ffe008 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, #00ffe008 0 1px, transparent 1px 40px);
}

.bokeh-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  opacity: 0;
  transition: opacity 2s ease;
}

.bokeh-field.online { opacity: 1; }

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(var(--blur));
  opacity: var(--alpha);
  width: var(--size);
  height: var(--size);
  background: radial-gradient(circle, var(--orb-color) 0%, transparent 66%);
  animation: drift var(--duration) ease-in-out infinite alternate;
  animation-delay: var(--delay);
  will-change: transform, opacity;
}

@keyframes drift {
  0% { transform: translate3d(0, 0, 0) scale(0.82); }
  48% { transform: translate3d(var(--dx), var(--dy), 0) scale(1.18); }
  100% { transform: translate3d(calc(var(--dx) * -0.45), calc(var(--dy) * 0.65), 0) scale(0.94); }
}

.boot-screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-content: center;
  gap: 22px;
  background: var(--abyss-pure);
  transition: transform 800ms cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.boot-screen.depart { transform: translateY(-100vh); }

.boot-line {
  width: 0;
  height: 3px;
  margin: 0 auto;
  background: linear-gradient(90deg, var(--sonar-cyan), var(--coral-pink), var(--alarm-gold), var(--candy-magenta), var(--sonar-cyan));
  box-shadow: 0 0 30px #00ffe0, 0 0 60px #ff69b4;
  transition: width 700ms ease;
}

.boot-line.draw { width: min(72vw, 900px); }

#boot-title {
  min-height: 1.15em;
  margin: 0;
  font-family: var(--headline);
  font-size: clamp(2.5rem, 10vw, 8rem);
  color: var(--sonar-cyan);
  letter-spacing: 0.08em;
  text-shadow: 0 0 40px var(--sonar-cyan), 0 0 80px #ff69b499;
  text-transform: uppercase;
}

#boot-subtitle {
  min-height: 1.7em;
  margin: 0;
  color: var(--foam-white);
  font-size: clamp(0.8rem, 2vw, 1.2rem);
  letter-spacing: 0.08em;
}

.engine-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: minmax(220px, auto);
  gap: 4px;
  min-height: 100vh;
  padding: 4px;
  background: var(--deep-hull);
}

.module {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 38px);
  background: #091b2aee;
  border-left: 4px solid var(--candy-magenta);
  box-shadow: inset 0 0 0 1px #00ffe016, 0 0 28px #00ffe00d;
  opacity: 0;
  transition: transform 400ms ease-out, opacity 400ms ease-out;
}

.module::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, #00ffe015, transparent 60%);
  pointer-events: none;
}

.module.from-left { transform: translateX(-100%); }
.module.from-right { transform: translateX(100%); }
.module.from-top { transform: translateY(-100%); }
.module.from-bottom { transform: translateY(100%); }
.module.revealed { opacity: 1; transform: translate(0, 0); }

.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.row-2 { grid-row: span 2; }

.module-label {
  position: relative;
  z-index: 1;
  margin-bottom: 18px;
  font-family: var(--accent);
  color: var(--alarm-gold);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1, h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 20px;
  font-family: var(--headline);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: phosphor 3s ease-in-out infinite;
}

h1 {
  font-size: clamp(2.5rem, 7vw, 6rem);
  color: var(--sonar-cyan);
  text-shadow: 0 0 40px var(--sonar-cyan), 0 0 80px #ff69b499;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 4.2rem);
  color: var(--coral-pink);
  line-height: 1;
}

@keyframes phosphor {
  0%, 100% { opacity: 0.86; }
  50% { opacity: 1; }
}

p, li, pre {
  position: relative;
  z-index: 1;
  line-height: 1.7;
  font-weight: 400;
  color: var(--foam-white);
}

.tagline {
  max-width: 980px;
  font-size: clamp(1.1rem, 2.2vw, 2rem);
  color: var(--foam-white);
}

.nav-module {
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 18px;
  background: #0a0f14f2;
  border-left-color: var(--alarm-gold);
}

.nav-module a {
  font-family: var(--headline);
  font-size: 2rem;
  color: var(--sonar-cyan);
  text-shadow: 0 0 20px #00ffe0;
  transition: color 180ms ease, transform 180ms ease;
}

.nav-module a:hover { color: var(--coral-pink); transform: translateX(5px); }

.nav-module span {
  font-family: var(--accent);
  color: var(--alarm-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero-module {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 500px;
}

.gradient { background: linear-gradient(135deg, #00ffe044, #ff69b422), #091b2aee; }
.hot { background: linear-gradient(135deg, #ff00ff25, #00ffe018), #091b2aee; }
.alarm-module { background: linear-gradient(135deg, #ffd70022, #ff69b414), #0a2e3dee; }
.coral-module { border-left-color: var(--coral-pink); }
.cyan-module { border-left-color: var(--sonar-cyan); }

.ticker-module {
  min-height: 112px;
  padding: 0;
  display: flex;
  align-items: center;
  background: var(--abyss-pure);
  border-left: 0;
}

.ticker-track {
  display: flex;
  width: max-content;
  font-family: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--sonar-cyan);
  text-transform: uppercase;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
}

.ticker-track span { padding-right: 2rem; }

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

.dial, .gauge-arc {
  position: relative;
  z-index: 1;
  aspect-ratio: 1;
  width: min(100%, 240px);
  margin: 20px auto;
  border: 2px solid #00ffe055;
  border-radius: 50%;
  box-shadow: 0 0 40px #00ffe022, inset 0 0 40px #ff69b411;
}

.dial span {
  position: absolute;
  inset: 18%;
  border: 1px solid #00ffe044;
  border-radius: 50%;
  animation: ringPulse 3.5s ease-out infinite;
}
.dial span:nth-child(2) { inset: 32%; animation-delay: 0.6s; border-color: #ff69b466; }
.dial span:nth-child(3) { inset: 46%; animation-delay: 1.2s; border-color: #ffd70066; }

@keyframes ringPulse {
  0% { transform: scale(0.4); opacity: 0.1; }
  40% { opacity: 0.8; }
  100% { transform: scale(1.8); opacity: 0; }
}

.gauge-arc::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 50%;
  background: conic-gradient(var(--coral-pink) 0 265deg, #0a0f14 265deg 360deg);
  mask: radial-gradient(circle, transparent 54%, black 56%);
}

.gauge-arc i {
  position: absolute;
  left: 50%;
  bottom: 50%;
  width: 4px;
  height: 40%;
  background: var(--alarm-gold);
  transform-origin: bottom;
  transform: rotate(52deg);
  box-shadow: 0 0 18px var(--alarm-gold);
}

.aurora-break {
  position: relative;
  min-height: 140px;
  overflow: hidden;
  opacity: 0;
  transform: translateX(-100%);
  transition: transform 400ms ease-out, opacity 400ms ease-out;
}

.aurora-break.revealed { opacity: 1; transform: translateX(0); }
.aurora-break.surge .aurora-halo { opacity: 0.6; }

.aurora-line, .aurora-halo {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  background: linear-gradient(90deg, var(--sonar-cyan), var(--coral-pink), var(--alarm-gold), var(--candy-magenta), var(--sonar-cyan));
  background-size: 400% 100%;
  animation: aurora 8s linear infinite;
}

.aurora-line { height: 3px; box-shadow: 0 0 36px #00ffe0; }
.aurora-halo { height: 80px; transform: translateY(-50%); filter: blur(40px); opacity: 0.15; transition: opacity 300ms ease; }

@keyframes aurora { to { background-position: -400% 0; } }

.terminal-module {
  min-height: 260px;
  background: var(--abyss-pure);
  border-left-color: var(--sonar-cyan);
}

#terminal-output {
  display: inline;
  margin: 0;
  font-family: var(--body);
  font-size: clamp(0.95rem, 1.6vw, 1.3rem);
  white-space: pre-wrap;
}

.cursor {
  position: relative;
  z-index: 1;
  color: var(--sonar-cyan);
  animation: blink 800ms steps(2, start) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.sonar {
  position: fixed;
  z-index: 0;
  width: 18px;
  height: 18px;
  border: 1px solid #00ffe033;
  border-radius: 50%;
  pointer-events: none;
}

.sonar::before, .sonar::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid #00ffe033;
  border-radius: 50%;
  animation: fixedSonar 4s ease-out infinite;
}

.sonar::after { animation-delay: 1.2s; border-color: #ff69b433; }
.sonar-one { left: 12%; top: 28%; }
.sonar-two { right: 18%; top: 52%; }
.sonar-three { left: 48%; bottom: 16%; }

@keyframes fixedSonar {
  from { transform: scale(0); opacity: 0.8; }
  to { transform: scale(18); opacity: 0; }
}

.glitching { animation: glitch 50ms steps(1) 4; }

@keyframes glitch {
  0% { clip-path: inset(0 0 0 0); transform: translateX(0); }
  20% { clip-path: inset(12% 0 68% 0); transform: translateX(3px); }
  40% { clip-path: inset(72% 0 8% 0); transform: translateX(-3px); }
  60% { clip-path: inset(33% 0 42% 0); transform: translateX(2px); }
  80% { clip-path: inset(4% 0 82% 0); transform: translateX(-2px); }
  100% { clip-path: inset(0 0 0 0); transform: translateX(0); }
}

.surge-flash {
  position: fixed;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  background: #00ffe008;
  opacity: 0;
  transition: opacity 150ms ease;
}
.surge-flash.flash { opacity: 1; }

.type-text { visibility: hidden; }
.type-text.typed { visibility: visible; }

@media (max-width: 900px) {
  .engine-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-1, .span-2, .span-3, .span-5, .span-6 { grid-column: span 2; }
  .nav-module { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 560px) {
  .engine-grid { grid-template-columns: 1fr; }
  .span-1, .span-2, .span-3, .span-5, .span-6 { grid-column: span 1; }
}