:root {
  --bg: #05070a;
  --bg-2: #0a0f14;
  --fg: #e8eef3;
  --muted: #8593a1;
  --dim: #4a5662;
  --line: rgba(120, 255, 220, 0.14);
  --accent: #2df5c4;       /* sentinel */
  --accent-2: #4cc9ff;     /* data */
  --signal: #ff3d6e;       /* threat */
  --glass: rgba(8, 13, 18, 0.62);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --gutter: clamp(16px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--bg); }

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- Background layers ---------- */

#field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
}

.veil {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 55% at 50% 42%, transparent 0%, rgba(5, 7, 10, 0.55) 70%, rgba(5, 7, 10, 0.9) 100%);
}

/* slow horizontal scan sweep */
.veil::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 220px;
  top: -220px;
  background: linear-gradient(180deg, transparent, rgba(45, 245, 196, 0.025) 80%, rgba(45, 245, 196, 0.07) 99%, rgba(45, 245, 196, 0.22) 100%);
  animation: sweep 9s cubic-bezier(.45, 0, .55, 1) infinite;
}

/* faint CRT line texture */
.veil::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}

@keyframes sweep {
  0%   { transform: translateY(0); }
  100% { transform: translateY(calc(100vh + 220px)); }
}

/* ---------- HUD ---------- */

.hud {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.hud::before,
.hud::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 64px;
}
.hud::before { top: 0; background: linear-gradient(180deg, var(--bg) 58%, transparent); }
.hud::after { bottom: 0; background: linear-gradient(0deg, var(--bg) 58%, transparent); }
.hud > div {
  z-index: 1;
  position: absolute;
  padding: 14px var(--gutter);
  white-space: nowrap;
}
.hud__tl { top: 0; left: 0; color: var(--fg); }
.hud__tr { top: 0; right: 0; }
.hud__bl { bottom: 0; left: 0; }
.hud__br { bottom: 0; right: 0; }
.hud .dim { color: var(--dim); }
.hud .accent { color: var(--accent); }
.hud .dot {
  display: inline-block;
  width: 7px; height: 7px;
  margin-right: 6px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: blink 2.4s steps(1) infinite;
  vertical-align: 0;
}
@keyframes blink { 50% { opacity: 0.25; } }

/* ---------- Layout ---------- */

main {
  position: relative;
  z-index: 2;
}

section {
  padding: 0 var(--gutter);
}

.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  position: relative;
  padding-top: 64px;
  padding-bottom: 72px;
}

.brackets {
  position: relative;
  width: min(640px, 100%);
  padding: clamp(28px, 5vw, 48px);
  text-align: left;
}
/* corner brackets */
.brackets::before,
.brackets::after {
  content: "";
  position: absolute;
  width: 26px; height: 26px;
  border: 2px solid var(--accent);
  opacity: 0.9;
}
.brackets::before { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.brackets::after  { bottom: 0; right: 0; border-left: 0; border-top: 0; }

.mark {
  width: 46px;
  height: 46px;
  color: var(--fg);
  display: block;
  margin-bottom: 22px;
  filter: drop-shadow(0 0 14px rgba(45, 245, 196, 0.35));
}

.eyebrow {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.caret { color: var(--accent); }

.wordmark {
  margin: 0;
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(76px, 19vw, 168px);
  line-height: 0.88;
  letter-spacing: -0.04em;
  color: var(--fg);
  position: relative;
  text-shadow: 0 0 40px rgba(45, 245, 196, 0.18);
}
/* glitch slices */
.wordmark.glitch::before,
.wordmark.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.wordmark.glitch::before {
  color: var(--accent);
  transform: translate(-3px, 0);
  clip-path: inset(18% 0 58% 0);
  mix-blend-mode: screen;
}
.wordmark.glitch::after {
  color: var(--signal);
  transform: translate(3px, 0);
  clip-path: inset(62% 0 12% 0);
  mix-blend-mode: screen;
}

.tagline {
  margin: 18px 0 0;
  font-family: var(--mono);
  font-size: clamp(15px, 2.2vw, 18px);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.lede {
  margin: 14px 0 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(15px, 1.8vw, 17px);
}

/* ---------- Link stack ---------- */

.links {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  min-height: 52px;
  background: var(--glass);
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  font-weight: 500;
  overflow: hidden;
  transition: border-color .2s, color .2s, transform .2s;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.link::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(45, 245, 196, 0.16), transparent);
  transform: translateX(-100%);
  transition: transform .5s ease;
}
.link:hover::before { transform: translateX(100%); }
.link:hover { border-color: var(--accent); }
.link:active { transform: scale(0.985); }

.link__idx {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
}
.link__label { flex: 1; white-space: nowrap; }
.link__arrow {
  font-family: var(--mono);
  color: var(--accent);
  transition: transform .2s;
}
.link:hover .link__arrow { transform: translateX(3px); }

.link--primary {
  grid-column: 1 / -1;
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 700;
}
.link--primary .link__idx { color: rgba(5, 7, 10, 0.55); }
.link--primary .link__arrow { color: var(--bg); }
.link--primary::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
}

/* scroll cue */
.scroll-cue {
  position: absolute;
  bottom: 44px;
  left: 50%;
  width: 22px;
  height: 34px;
  margin-left: -11px;
  border: 1px solid var(--dim);
  border-radius: 12px;
}
.scroll-cue span {
  position: absolute;
  left: 50%;
  top: 7px;
  width: 2px;
  height: 7px;
  margin-left: -1px;
  background: var(--accent);
  animation: cue 1.8s ease-in-out infinite;
}
@keyframes cue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { opacity: 0; }
}

/* ---------- Sections ---------- */

.capabilities,
.contact {
  max-width: 1080px;
  margin: 0 auto;
  padding-top: clamp(64px, 12vh, 120px);
  padding-bottom: clamp(32px, 6vh, 56px);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}
.section-idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}

.card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--glass);
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color .25s, transform .25s;
}
.card::after {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 0; height: 2px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  transition: width .45s ease;
}
.card:hover { border-color: rgba(45, 245, 196, 0.4); transform: translateY(-2px); }
.card:hover::after { width: calc(100% + 2px); }

.card__code {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.card h3 {
  margin: 10px 0 8px;
  font-size: 20px;
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Terminal / contact ---------- */

.terminal {
  max-width: 760px;
  background: rgba(6, 10, 14, 0.82);
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 30px 80px -30px rgba(45, 245, 196, 0.18);
  font-family: var(--mono);
  font-size: 14px;
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.terminal__bar span {
  width: 9px; height: 9px;
  border: 1px solid var(--dim);
}
.terminal__bar span:first-child { background: var(--signal); border-color: var(--signal); }
.terminal__bar em {
  margin-left: auto;
  font-style: normal;
  font-size: 11px;
  color: var(--dim);
}
.terminal__body { padding: 18px 18px 22px; }
.terminal p { margin: 0; }
.cmd { margin-top: 14px !important; color: var(--fg); }
.cmd:first-child { margin-top: 0 !important; }
.prompt { color: var(--accent); margin-right: 6px; }
.out { color: var(--muted); }

.kv {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 8px 14px;
  margin: 8px 0 0;
}
.kv dt { color: var(--dim); }
.kv dd { margin: 0; color: var(--fg); overflow-wrap: anywhere; }
.kv a {
  color: var(--accent-2);
  border-bottom: 1px dashed rgba(76, 201, 255, 0.4);
}
.kv a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.mono-dim { color: var(--muted) !important; font-size: 12px; }

.copy {
  margin-left: 8px;
  padding: 2px 8px;
  font: inherit;
  font-size: 11px;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
}
.copy:hover { border-color: var(--accent); }

.typed { color: var(--muted); }
.cursor {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  vertical-align: -2px;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

/* ---------- Footer / toast ---------- */

.footer {
  position: relative;
  z-index: 2;
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px var(--gutter) 72px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.footer a { margin-left: auto; }
.footer .dim { color: var(--dim); }
.footer a.dim:hover { color: var(--accent); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 48px;
  z-index: 10;
  transform: translate(-50%, 20px);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  background: var(--accent);
  color: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Responsive ---------- */

@media (max-width: 720px) and (min-width: 561px) {
  .links { grid-template-columns: 1fr 1fr; }
  .links .link:last-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .hud { font-size: 10px; }
  .hud__tr { display: none; }
  .links { grid-template-columns: 1fr; }
  .scroll-cue { display: none; }
  .kv { grid-template-columns: 58px 1fr; }
  .terminal { font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal { opacity: 1; transform: none; }
}