/* ---- tokens ---- */
:root{
  --bg: #14151a;
  --bg-panel: #1c1e25;
  --bg-panel-2: #22252d;
  --line: #33363f;
  --text: #eceae4;
  --text-dim: #8d919c;
  --lime: #a6ff5e;
  --lime-dim: #6b8f45;
  --amber: #ffb648;

  --mono: "Space Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap{
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

a{ color: inherit; }

:focus-visible{
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* subtle device-plastic grain, purely decorative */
.grain{
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- nav ---- */
.nav{
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--line);
}
.nav-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo{
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--text);
}
.logo span{ color: var(--lime); }
.nav-links{ display: flex; gap: 10px; }
.nav-link{
  font-family: var(--mono);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 14px;
  transition: color .15s ease, border-color .15s ease;
}
.nav-link:hover{ color: var(--lime); border-color: var(--lime-dim); }

/* ---- hero ---- */
.hero{
  position: relative;
  z-index: 2;
  padding: 88px 0 96px;
}
.hero-inner{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.eyebrow{
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--lime);
  margin: 0 0 18px;
  letter-spacing: 0.02em;
}
h1{
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.12;
  margin: 0 0 22px;
  letter-spacing: -0.01em;
}
.lede{
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 46ch;
  margin: 0 0 32px;
}
.hero-actions{ display: flex; gap: 14px; flex-wrap: wrap; }

.btn{
  display: inline-block;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 13px 22px;
  border-radius: 8px;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--lime);
  color: #10130b;
}
.btn-primary:hover{ background: #b9ff7a; }
.btn-ghost{
  border: 1px solid var(--line);
  color: var(--text);
}
.btn-ghost:hover{ border-color: var(--lime-dim); color: var(--lime); }
.btn-lg{ font-size: 1.05rem; padding: 16px 28px; }

/* ---- HUD signature panel ---- */
.hero-hud{ display: flex; justify-content: center; }
.hud-panel{
  width: 100%;
  max-width: 360px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
  overflow: hidden;
  font-family: var(--mono);
}
.hud-titlebar{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-panel-2);
  border-bottom: 1px solid var(--line);
}
.hud-dot{
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 8px var(--lime);
}
.hud-title{
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}
.hud-min{ margin-left: auto; color: var(--text-dim); }

.hud-toggles{
  list-style: none;
  margin: 0;
  padding: 14px 14px 8px;
}
.hud-toggles li{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 0;
  font-size: 0.82rem;
  color: var(--text);
  border-bottom: 1px dashed var(--line);
}
.hud-toggles li:last-child{ border-bottom: none; }

.toggle{
  --w: 36px; --h: 20px;
  width: var(--w); height: var(--h);
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #14151a;
  position: relative;
  cursor: default;
  padding: 0;
  transition: background .25s ease, border-color .25s ease;
}
.toggle::after{
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: transform .25s ease, background .25s ease;
}
.toggle.is-on{
  background: rgba(166,255,94,0.15);
  border-color: var(--lime-dim);
}
.toggle.is-on::after{
  transform: translateX(16px);
  background: var(--lime);
  box-shadow: 0 0 6px var(--lime);
}

.hud-status{
  border-top: 1px solid var(--line);
  padding: 10px 14px 12px;
  font-size: 0.76rem;
  color: var(--lime);
  min-height: 1.6em;
}
.hud-cursor{ color: var(--text-dim); margin-right: 6px; }
.hud-caret{
  animation: blink 1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity: 0; } }

/* ---- what section ---- */
.what{
  position: relative;
  z-index: 2;
  padding: 72px 0;
  border-top: 1px solid var(--line);
}
.what h2{
  font-size: 1.6rem;
  margin: 0 0 12px;
}
.section-sub{
  color: var(--text-dim);
  margin: 0 0 40px;
  max-width: 50ch;
}
.feature-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature{
  display: block;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  text-decoration: none;
  color: var(--text);
  transition: border-color .15s ease, transform .15s ease;
}
.feature:hover{
  border-color: var(--lime-dim);
  transform: translateY(-2px);
}
.feature-tag{
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
}
.feature h3{
  font-size: 1.05rem;
  margin: 0 0 10px;
}
.feature p{
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0 0 14px;
}
.feature-link{
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--lime);
}

/* ---- project subpages ---- */
.proj-hero{
  position: relative;
  z-index: 2;
  padding: 72px 0 48px;
}
.back-link{
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  text-decoration: none;
  margin-bottom: 28px;
}
.back-link:hover{ color: var(--lime); }
.proj-hero .lede{ max-width: 60ch; }

.proj-body{
  position: relative;
  z-index: 2;
  padding: 0 0 88px;
  border-top: 1px solid var(--line);
}
.prose{
  max-width: 68ch;
  padding-top: 48px;
  color: var(--text);
  font-size: 1.02rem;
}
.prose p{
  color: var(--text-dim);
  margin: 0 0 22px;
}
.prose a{
  color: var(--lime);
  text-decoration: underline;
  text-decoration-color: var(--lime-dim);
  text-underline-offset: 3px;
}
.prose a:hover{ text-decoration-color: var(--lime); }

/* ---- cta ---- */
.cta{
  position: relative;
  z-index: 2;
  padding: 84px 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(166,255,94,0.05), transparent 60%);
}
.cta-inner{ text-align: center; }
.cta h2{
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 28px;
}

/* ---- footer ---- */
.site-footer{
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  padding: 24px 0;
}
.footer-inner{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--text-dim);
}
.footer-text p{ margin: 0 0 6px; }
.footer-text p:last-child{ margin-bottom: 0; }
.footer-disclaimer{ color: #6c7078; font-size: 0.78rem; }
.footer-links{ display: flex; gap: 16px; flex-shrink: 0; }
.footer-inner a{ text-decoration: none; color: var(--text-dim); }
.footer-inner a:hover{ color: var(--lime); }

/* ---- responsive ---- */
@media (max-width: 880px){
  .hero-inner{ grid-template-columns: 1fr; }
  .hero-hud{ order: -1; }
  .feature-grid{ grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .hud-caret{ animation: none; }
  .toggle, .toggle::after{ transition: none; }
}