:root {
  --charcoal: #2e2e2e; /* original */
  --ash: #a6a6a6;
  --chalk: #f4f4f4;
  --diamond-blue: #00b5e2;
  --honeycomb: #e4a010;

  /* Terminal depths */
  --bg-0: #0b0f12; /* near-black */
  --bg-1: #0a0d10; /* panels */
  --bg-2: #0f151b; /* elevated */
  --grid: rgba(0, 181, 226, 0.06);
  --glass: rgba(255, 255, 255, 0.02);
  --stroke: rgba(0, 181, 226, 0.2);

  --glow-cyan: 0 0 6px rgba(0,181,226,0.75), 0 0 18px rgba(0,181,226,0.35);
  --glow-amber: 0 0 6px rgba(228,160,16,0.65), 0 0 18px rgba(228,160,16,0.25);

  --container: 1080px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Share Tech Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  color: var(--chalk);
  background: var(--bg-0);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

/* CRT scanlines + vignette */
body::before {
  content: '';
  position: fixed;
  inset: -1px;
  pointer-events: none;
  background: 
    /* subtle grid */
    linear-gradient(to right, transparent 0, var(--grid) 1px, transparent 1px) 0 0/32px 100%,
    linear-gradient(to bottom, transparent 0, var(--grid) 1px, transparent 1px) 0 0/100% 20px,
    /* scanlines */
    repeating-linear-gradient(to bottom, rgba(255,255,255,0.02) 0 1px, rgba(0,0,0,0) 1px 3px);
  mix-blend-mode: lighten;
  opacity: 0.35;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  inset: -1px;
  pointer-events: none;
  background: radial-gradient(120% 80% at 50% 50%, transparent, rgba(0,0,0,0.65));
  z-index: 1;
}

/* Hero */
.hero {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 6rem 1.25rem 4rem;
  background: radial-gradient(1000px 600px at 50% 20%, rgba(0,181,226,0.10), transparent 60%),
              radial-gradient(700px 500px at 20% 80%, rgba(228,160,16,0.08), transparent 60%),
              var(--bg-0);
}

.hero-inner {
  width: min(100%, var(--container));
  text-align: center;
}

.brand {
  margin: 0 0 1rem;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  letter-spacing: 0.16em;
  font-weight: 800;
  line-height: 1.05;
  color: #cfffff;
  text-shadow: var(--glow-cyan);
  filter: drop-shadow(0 0 2px rgba(0,181,226,0.5));
  animation: crt-glow 6s ease-in-out infinite alternate;
}

.brand::after {
  content: ' ▍';
  color: #87e9ff;
  text-shadow: var(--glow-cyan);
  animation: caret-blink 1s steps(1, end) infinite;
}

@keyframes caret-blink { 50% { opacity: 0.15; } }

@keyframes crt-glow {
  0% { text-shadow: var(--glow-cyan); }
  100% { text-shadow: 0 0 4px rgba(0,181,226,0.5), 0 0 10px rgba(0,181,226,0.25); }
}

.tagline {
  margin: 0 0 2.5rem;
  color: #9ad2de;
  text-shadow: 0 0 6px rgba(0,181,226,0.25);
  font-weight: 400;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  opacity: 0.95;
}
.tagline span { display: block; }

.cta {
  display: inline-block;
  padding: 0.85rem 1.15rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #bff7ff;
  background: linear-gradient(180deg, rgba(0,181,226,0.06), rgba(0,181,226,0.02));
  border: 1px solid var(--stroke);
  box-shadow: inset 0 0 12px rgba(0,181,226,0.15), 0 0 0 2px rgba(0,181,226,0.1);
  text-transform: uppercase;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, color 120ms ease;
}
.cta::before { content: '>> '; color: var(--diamond-blue); }
.cta:hover {
  transform: translateY(-1px);
  border-color: rgba(0,181,226,0.5);
  box-shadow: inset 0 0 18px rgba(0,181,226,0.22), 0 0 16px rgba(0,181,226,0.18);
  color: #e7fbff;
}
.cta:active { transform: translateY(0); }
.cta:focus-visible { outline: 2px solid var(--honeycomb); outline-offset: 2px; }

/* Lab */
.lab {
  padding: 5rem 1.25rem 6rem;
  background: linear-gradient(180deg, transparent, rgba(0,181,226,0.04) 20%, transparent 40%);
}

.section-inner {
  width: min(100%, var(--container));
  margin: 0 auto;
}

.lab h2 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: #bff7ff;
  text-shadow: var(--glow-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lab-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.lab-list li {
  position: relative;
  color: #d7fcff;
  background: var(--glass);
  border: 1px solid rgba(0, 181, 226, 0.14);
  border-radius: 8px;
  padding: 0.9rem 1rem 0.9rem 2.25rem;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease, box-shadow 140ms ease;
  box-shadow: inset 0 0 12px rgba(0, 181, 226, 0.08);
}

.lab-list li::before {
  content: '▸';
  color: var(--diamond-blue);
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  text-shadow: var(--glow-cyan);
}

.lab-list li:hover {
  background: rgba(0, 181, 226, 0.08);
  border-color: rgba(0, 181, 226, 0.45);
  transform: translateY(-1px);
  box-shadow: 0 0 18px rgba(0,181,226,0.18);
}
.lab-list li:hover::after {
  content: ' [ENTER]';
  color: #ffd89a;
  text-shadow: var(--glow-amber);
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(0,181,226,0.16);
  color: var(--ash);
  padding: 2rem 1.25rem 3rem;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,0.35));
}

.footer-inner {
  width: min(100%, var(--container));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.signature { font-weight: 600; color: #cfe9ff; text-shadow: 0 0 6px rgba(0,181,226,0.25); }
.copyright { opacity: 0.9; }

/* Boot overlay */
#boot {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background: var(--bg-0);
  transition: opacity 420ms ease, visibility 420ms ease;
}

#boot.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

#boot .boot-inner {
  width: min(100%, 800px);
  padding: 2rem 1.25rem;
}

#boot #boot-log {
  margin: 0;
  color: #bff7ff;
  text-shadow: 0 0 8px rgba(0,181,226,0.35);
  white-space: pre-wrap;
  min-height: 12ch;
}

#boot .boot-hint {
  margin-top: 1rem;
  color: #ffd89a;
  text-shadow: var(--glow-amber);
  font-size: 0.95rem;
  opacity: 0.9;
  animation: caret-blink 1.3s steps(1, end) infinite;
}

@media (prefers-reduced-motion: reduce) {
  #boot { transition: none; }
}

/* Utilities */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Overrides + lab link rows */
.brand::after { content: ' ▌' !important; }
.lab-list li { padding: 0 !important; background: none !important; border: none !important; }
.lab-list li::before { content: none !important; }
.lab-link {
  position: relative;
  display: block;
  padding: 0.9rem 1rem 0.9rem 2.25rem;
  color: inherit;
  text-decoration: none;
  background: var(--glass);
  border: 1px solid rgba(0, 181, 226, 0.14);
  border-radius: 8px;
  box-shadow: inset 0 0 12px rgba(0, 181, 226, 0.08);
}
.lab-link::before {
  content: '>>';
  color: var(--diamond-blue);
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  text-shadow: var(--glow-cyan);
}
.lab-link:hover {
  background: rgba(0, 181, 226, 0.08);
  border-color: rgba(0, 181, 226, 0.45);
  transform: translateY(-1px);
  box-shadow: 0 0 18px rgba(0,181,226,0.18);
}
.lab-link:hover::after {
  content: ' [ENTER]';
  color: #ffd89a;
  text-shadow: var(--glow-amber);
}

/* Neutralize original li hover artifacts to avoid duplicate labels */
.lab-list li:hover { background: none !important; border-color: inherit !important; transform: none !important; box-shadow: none !important; }
.lab-list li:hover::after { content: none !important; }