/* sembl-stack site — same industrial system as the sembl site.
   Onyx surfaces, 1px beams instead of shadows. The stack leads with cyan
   (the pipeline); safety-green stays the verdict color (PASS), coral is BLOCK. */

:root {
  --onyx: #0a0a0b;
  --charcoal: #121213;
  --surface-1: #161617;
  --surface-2: #1c1b1c;
  --surface-3: #232224;
  --beam: #27272a;
  --beam-bright: #3a393a;

  --text: #e8e6e7;
  --text-dim: #a1a1aa;
  --text-faint: #71717a;

  --green: #ccff00;
  --green-dim: #abd600;
  --cyan: #7cd4df;
  --cyan-dim: #56aab5;
  --cyan-deep: #0e7c86;
  --coral: #ff6f61;
  --coral-dim: #c8463b;

  --font-head: "Hanken Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius: 4px;
  --margin: 48px;
  --max: 1200px;
  --header-h: 64px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--onyx);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Fixed blueprint grid behind everything */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.grid-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(124, 212, 223, 0.055), transparent 70%);
}

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

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--margin); }

.section { padding: 96px 0; position: relative; }
.section + .section { border-top: 1px solid var(--beam); }

.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-dim);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.kicker::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--cyan-dim);
}

h1, h2, h3 { font-family: var(--font-head); font-weight: 650; letter-spacing: -0.02em; line-height: 1.08; }

.section-head { max-width: 660px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin: 16px 0 12px; }
.section-head p { color: var(--text-dim); font-size: 17px; }
.section-head strong { color: var(--text); font-weight: 600; }

code.inl {
  font-family: var(--font-mono);
  font-size: 0.86em;
  color: var(--cyan);
  background: var(--surface-1);
  border: 1px solid var(--beam);
  border-radius: 2px;
  padding: 1px 5px;
}

/* -- Header -------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--beam);
  background: rgba(10, 10, 11, 0.72);
  backdrop-filter: blur(12px);
}
.header .wrap { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 650; font-size: 18px; }
.brand svg { width: 26px; height: 26px; display: block; }
.brand .suffix { color: var(--cyan); }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  transition: color 0.18s;
}
.nav a:hover { color: var(--text); }
.nav .ghost {
  border: 1px solid var(--beam-bright);
  padding: 8px 16px;
  border-radius: var(--radius);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.18s, color 0.18s;
}
.nav .ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.gh-ico { width: 15px; height: 15px; display: block; flex-shrink: 0; }

/* Scroll progress beam */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--cyan);
  z-index: 60;
  box-shadow: 0 0 12px rgba(124, 212, 223, 0.6);
}

/* -- Hero ---------------------------------------------------- */
.hero { padding: 80px 0 72px; position: relative; }
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--beam);
  border-radius: var(--radius);
  padding: 6px 12px;
  background: var(--charcoal);
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(124, 212, 223, 0.5); }
  70% { box-shadow: 0 0 0 7px rgba(124, 212, 223, 0); }
  100% { box-shadow: 0 0 0 0 rgba(124, 212, 223, 0); }
}
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } }

.hero h1 { font-size: clamp(38px, 5.6vw, 62px); margin: 22px 0 20px; font-weight: 700; max-width: 17em; }
.hero h1 .accent { color: var(--cyan); }
.hero-lede { font-size: 19px; color: var(--text-dim); max-width: 42em; }
.hero-lede strong { color: var(--text); font-weight: 600; }
.hero-actions { display: flex; align-items: center; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 12px 18px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.18s, border-color 0.18s, color 0.18s;
}
.btn-ghost { border-color: var(--beam-bright); color: var(--text); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.copy-cmd {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  background: #000;
  border: 1px solid var(--beam);
  border-radius: var(--radius);
  padding: 11px 14px;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.18s;
}
.copy-cmd:hover { border-color: var(--cyan-dim); }
.copy-cmd .prompt { color: var(--cyan); }
.copy-cmd .hint { color: var(--text-faint); font-size: 11px; }
.copy-cmd.copied .hint { color: var(--green); }

/* -- The demo (terminal + stage rail) ------------------------- */
.demo { margin-top: 56px; }
.demo-frame {
  display: grid;
  grid-template-columns: 1fr 236px;
  border: 1px solid var(--beam);
  border-radius: var(--radius);
  background: #000;
  overflow: hidden;
}
.demo-frame .terminal { border: 0; border-right: 1px solid var(--beam); border-radius: 0; box-shadow: none; }

.terminal {
  position: relative;
  border: 1px solid var(--beam);
  border-radius: var(--radius);
  background: #000;
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--beam);
  background: var(--charcoal);
}
.terminal-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--surface-3); display: block; }
.terminal-bar i:nth-child(1) { background: #3a2a2a; }
.terminal-bar i:nth-child(2) { background: #3a352a; }
.terminal-bar span { margin-left: 8px; font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); }
.terminal-bar .replay {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  background: none;
  border: 1px solid var(--beam-bright);
  border-radius: 2px;
  padding: 3px 10px;
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s;
}
.terminal-bar .replay:hover { color: var(--cyan); border-color: var(--cyan); }

.terminal-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.85;
  min-height: 468px;
}
.terminal-body .line { display: block; white-space: pre-wrap; }
.c-prompt { color: var(--cyan); }
.c-cmd { color: var(--text); }
.c-dim { color: var(--text-faint); }
.c-ok { color: var(--green); }
.c-cyan { color: var(--cyan); }
.c-err { color: var(--coral); }
.c-warn { color: #f3cf5c; }
.cursor { display: inline-block; width: 8px; height: 15px; background: var(--cyan); vertical-align: text-bottom; animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

/* Stage rail */
.rail { background: var(--charcoal); padding: 16px 0; }
.rail-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 0 18px 12px;
  border-bottom: 1px solid var(--beam);
}
.rail-stages { padding: 12px 0; }
.stage {
  display: grid;
  grid-template-columns: 14px 34px 1fr;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  position: relative;
}
.stage .pip {
  width: 7px; height: 7px;
  border-radius: 50%;
  border: 1px solid var(--beam-bright);
  background: transparent;
  justify-self: center;
}
.stage .lx { font-size: 10.5px; font-weight: 700; letter-spacing: 0.04em; }
.stage .nm { font-size: 12px; letter-spacing: 0.01em; }
.stage.running { color: var(--cyan); }
.stage.running .pip { border-color: var(--cyan); background: var(--cyan); animation: pulse-cyan 1.2s infinite; }
@keyframes pulse-cyan {
  0% { box-shadow: 0 0 0 0 rgba(124, 212, 223, 0.5); }
  70% { box-shadow: 0 0 0 5px rgba(124, 212, 223, 0); }
  100% { box-shadow: 0 0 0 0 rgba(124, 212, 223, 0); }
}
.stage.done { color: var(--text-dim); }
.stage.done .pip { border-color: var(--green); background: var(--green); }
.stage.done .lx { color: var(--green-dim); }
.stage.blocked { color: var(--coral); }
.stage.blocked .pip { border-color: var(--coral); background: var(--coral); }
@media (prefers-reduced-motion: reduce) { .stage.running .pip { animation: none; } }

.rail-verdict {
  margin: 10px 18px 0;
  border: 1px solid var(--beam);
  border-radius: 2px;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.05em;
}
.rail-verdict b { display: block; font-size: 15px; letter-spacing: 0.02em; margin-top: 2px; }
.rail-verdict.pass { border-color: rgba(204, 255, 0, 0.4); }
.rail-verdict.pass b { color: var(--green); }
.rail-verdict.block { border-color: rgba(255, 111, 97, 0.4); }
.rail-verdict.block b { color: var(--coral); }

.demo-caption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-faint);
  text-align: center;
}
.demo-caption a { color: var(--cyan); text-decoration: underline; text-underline-offset: 2px; }

/* -- Stage map table ------------------------------------------ */
.stage-map { border: 1px solid var(--beam); border-radius: var(--radius); overflow: hidden; }
.stage-row {
  display: grid;
  grid-template-columns: 64px 200px 1fr 148px;
  gap: 20px;
  align-items: baseline;
  padding: 17px 24px;
  background: var(--charcoal);
  transition: background 0.2s;
}
.stage-row:hover { background: var(--surface-1); }
.stage-row + .stage-row { border-top: 1px solid var(--beam); }
.stage-row .lx { font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--cyan); }
.stage-row .nm { font-family: var(--font-head); font-weight: 600; font-size: 15.5px; color: var(--text); }
.stage-row .ds { font-size: 14px; color: var(--text-dim); }
.stage-row .who {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  justify-self: end;
  padding: 3px 8px;
  border-radius: 2px;
  border: 1px solid var(--beam-bright);
  color: var(--text-dim);
  white-space: nowrap;
}
.stage-row .who.own { border-color: rgba(204, 255, 0, 0.4); color: var(--green); }
.stage-row .who.gate { background: var(--green); border-color: var(--green); color: #161e00; }

/* -- Steps (shared with sembl site) --------------------------- */
.steps { display: grid; gap: 0; border: 1px solid var(--beam); border-radius: var(--radius); overflow: hidden; }
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 26px 28px;
  background: var(--charcoal);
  transition: background 0.2s;
}
.step + .step { border-top: 1px solid var(--beam); }
.step:hover { background: var(--surface-1); }
.step .idx { font-family: var(--font-mono); font-size: 13px; font-weight: 700; color: var(--cyan); padding-top: 3px; }
.step h3 { font-size: 19px; margin-bottom: 5px; font-weight: 600; letter-spacing: -0.01em; }
.step p { color: var(--text-dim); font-size: 15px; max-width: 62ch; }
.step p strong { color: var(--text); font-weight: 600; }
.step .tools { margin-top: 9px; display: flex; gap: 8px; flex-wrap: wrap; }

.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--beam-bright);
  border-radius: 2px;
  padding: 3px 7px;
}

/* -- Artifact contract / swap split --------------------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.codeblock { background: #000; border: 1px solid var(--beam); border-radius: var(--radius); padding: 18px 20px; overflow-x: auto; }
.codeblock code { font-family: var(--font-mono); font-size: 13px; line-height: 1.8; color: var(--text); white-space: pre; display: block; }
.codeblock .c { color: var(--text-faint); }
.codeblock .g { color: var(--green); }
.codeblock .y { color: var(--cyan); }
.codeblock .r { color: var(--coral); }
.cb-label { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); margin: 0 0 8px; display: block; }

.artifact-list { list-style: none; display: grid; gap: 0; border: 1px solid var(--beam); border-radius: var(--radius); overflow: hidden; }
.artifact-list li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  padding: 13px 18px;
  background: var(--charcoal);
  font-size: 14px;
  color: var(--text-dim);
}
.artifact-list li + li { border-top: 1px solid var(--beam); }
.artifact-list code { font-family: var(--font-mono); font-size: 12.5px; color: var(--cyan); }

/* -- Own vs adapt --------------------------------------------- */
.own-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.own-card {
  border: 1px solid var(--beam);
  border-radius: var(--radius);
  background: var(--charcoal);
  padding: 24px;
}
.own-card.owned { border-color: rgba(124, 212, 223, 0.35); }
.own-card .oc-mark {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
}
.own-card h3 { font-size: 18px; margin: 8px 0 6px; }
.own-card p { font-size: 14px; color: var(--text-dim); }
.own-note { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); margin-top: 20px; }

/* -- Gate band (cross-link to sembl) --------------------------- */
.gate-band {
  border: 1px solid rgba(204, 255, 0, 0.3);
  border-radius: var(--radius);
  background: var(--charcoal);
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
.gate-band h3 { font-size: 24px; margin-bottom: 8px; }
.gate-band h3 .g { color: var(--green); }
.gate-band p { color: var(--text-dim); font-size: 15px; max-width: 58ch; }
.gate-band .btn-gate {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 12px 18px;
  background: var(--green);
  color: #161e00;
  white-space: nowrap;
  transition: background 0.18s;
}
.gate-band .btn-gate:hover { background: #d8ff33; }

/* -- Install ------------------------------------------------- */
.install-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.cmd-block {
  border: 1px solid var(--beam);
  border-radius: var(--radius);
  background: var(--charcoal);
  padding: 20px;
  min-width: 0;
}
.cmd-block .cmd-lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan-dim);
  margin-bottom: 12px;
}
.cmd-block code {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.7;
}
.cmd-block code .p { color: var(--text-faint); }

/* -- Footer -------------------------------------------------- */
.footer { border-top: 1px solid var(--beam); padding: 48px 0 60px; }
.footer .wrap { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.footer .f-brand { max-width: 320px; }
.footer .f-brand .brand { margin-bottom: 12px; }
.footer .f-brand p { color: var(--text-faint); font-size: 14px; }
.footer .f-links { display: flex; gap: 56px; flex-wrap: wrap; }
.footer .f-col h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 14px; font-weight: 700; }
.footer .f-col a { display: block; font-size: 14px; color: var(--text-dim); margin-bottom: 9px; transition: color 0.18s; }
.footer .f-col a:hover { color: var(--cyan); }
.copyright { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--beam); }

/* -- Reveal -------------------------------------------------- */
[data-reveal], [data-reveal-stagger] > * { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.revealed[data-reveal], [data-reveal-stagger].revealed > * { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-reveal-stagger] > * { opacity: 1; transform: none; transition: none; }
}

/* -- Responsive ----------------------------------------------- */
@media (max-width: 960px) {
  .nav a:not(.ghost) { display: none; }
  .demo-frame { grid-template-columns: 1fr; }
  .demo-frame .terminal { border-right: 0; border-bottom: 1px solid var(--beam); }
  .rail-stages { display: grid; grid-template-columns: repeat(3, 1fr); }
  .stage { padding: 7px 12px; }
  .split, .own-grid, .install-cols { grid-template-columns: 1fr; }
  .stage-row { grid-template-columns: 48px 1fr; }
  .stage-row .ds { grid-column: 1 / -1; }
  .stage-row .who { grid-column: 2; justify-self: start; }
  .gate-band { grid-template-columns: 1fr; padding: 28px; }
}
@media (max-width: 640px) {
  :root { --margin: 20px; }
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 48px; }
  .terminal-body { min-height: 0; font-size: 12px; }
  .rail-stages { grid-template-columns: repeat(2, 1fr); }
}