/* ---- Design tokens ---- */
:root {
  --color-bg: #0b0c0e;
  --color-bg-alt: #101215;
  --color-fg: #f2f2ee;
  --color-fg-muted: #9aa0a8;
  --color-border: #2a2d32;
  --color-accent: #4d8dff;
  --color-accent-dim: rgba(77, 141, 255, 0.35);
  --color-grid: rgba(77, 141, 255, 0.08);

  --font-display: "Inter", sans-serif;
  --font-mono: "Space Mono", monospace;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;

  --max-width: 1200px;
  --radius: 2px;
  --transition: 200ms ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 48px 48px;
}

h1, h2, h3 { font-family: var(--font-display); margin: 0; color: var(--color-fg); }
p { margin: 0; }
a { color: inherit; }

img, svg { display: block; max-width: 100%; }

/* ---- Utility ---- */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
.wrap--narrow { max-width: 760px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #05070c;
  padding: var(--space-2);
  z-index: 1000;
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

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

/* ---- Registration marks (blueprint corner marks) ---- */
.reg-mark {
  position: fixed;
  width: 20px;
  height: 20px;
  z-index: 40;
  pointer-events: none;
  opacity: 0.5;
}
.reg-mark::before, .reg-mark::after {
  content: "";
  position: absolute;
  background: var(--color-accent-dim);
}
.reg-mark::before { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }
.reg-mark::after { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.reg-mark--tl { top: 16px; left: 16px; }
.reg-mark--tr { top: 16px; right: 16px; }
.reg-mark--bl { bottom: 16px; left: 16px; }
.reg-mark--br { bottom: 16px; right: 16px; }
@media (max-width: 640px) { .reg-mark { display: none; } }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 14, 0.97);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.wordmark {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--color-fg);
}
.wordmark-accent { color: var(--color-accent); }
.wordmark-sub {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--color-fg-muted);
  margin-top: 2px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}
.primary-nav a {
  text-decoration: none;
  color: var(--color-fg-muted);
  transition: color var(--transition);
  padding: var(--space-1) 0;
}
.primary-nav a:hover,
.primary-nav a:focus-visible { color: var(--color-fg); }
.primary-nav a.nav-cta { color: var(--color-accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  margin: 0 9px;
  background: var(--color-fg);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 780px) {
  .nav-toggle { display: flex; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }
  .primary-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .primary-nav a { width: 100%; }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform 100ms ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--color-accent);
  color: #05070c;
}
.btn-primary:hover, .btn-primary:focus-visible { background: #6ea1ff; }
.btn-ghost {
  background: transparent;
  color: var(--color-fg);
  border-color: var(--color-border);
}
.btn-ghost:hover, .btn-ghost:focus-visible { border-color: var(--color-accent); color: var(--color-accent); }
.btn-block { width: 100%; }

/* ---- Hero ---- */
.hero {
  position: relative;
  padding: var(--space-8) 0 var(--space-7);
  border-bottom: 1px solid var(--color-border);
}
.hero-headline {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 16ch;
}
.hero-sub {
  margin-top: var(--space-3);
  max-width: 52ch;
  font-size: 18px;
  color: var(--color-fg-muted);
}
.hero-actions {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.hero-illustration {
  width: 100%;
}
.blueprint-browser {
  width: 100%;
  height: auto;
  overflow: visible;
}
.blueprint-browser .dim-label {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  fill: var(--color-fg-muted);
}
@media (max-width: 900px) {
  .hero-illustration { max-width: 420px; margin: 0 auto; }
}

/* ---- Sections ---- */
.section {
  padding: var(--space-7) 0;
  border-bottom: 1px solid var(--color-border);
}
.section--alt { background: var(--color-bg-alt); }
.section--cta { border-bottom: none; }
.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  max-width: 20ch;
  margin-bottom: var(--space-5);
}

/* ---- Spec grid ---- */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 900px) {
  .spec-grid { grid-template-columns: 1fr; }
}
.spec-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.015);
}
.spec-card--soon { border-style: dashed; }
.spec-icon {
  width: 28px;
  height: 28px;
  margin-bottom: var(--space-3);
}
.spec-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.spec-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.spec-card p { color: var(--color-fg-muted); }
.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dim);
  border-radius: var(--radius);
  padding: 3px 6px;
}

/* ---- Process ---- */
.process-line {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  counter-reset: step;
}
@media (max-width: 900px) {
  .process-line { grid-template-columns: 1fr; }
}
.process-step {
  position: relative;
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-border);
}
.process-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}
.process-step h3 {
  font-size: 18px;
  margin-bottom: var(--space-1);
}
.process-step p {
  color: var(--color-fg-muted);
  font-size: 15px;
}

/* ---- Bento grid (the numbers) ---- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (max-width: 900px) {
  .bento-grid { grid-template-columns: 1fr; }
}
.bento-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.015);
}
.bento-card--wide {
  grid-column: span 2;
}
@media (max-width: 900px) {
  .bento-card--wide { grid-column: span 1; }
}
.bento-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-3);
}
.bento-highlight {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--color-fg);
  margin-bottom: var(--space-3);
}
.bento-highlight span {
  font-size: 15px;
  font-weight: 400;
  color: var(--color-fg-muted);
}

/* Tree diagram */
.tree-diagram {
  width: 100%;
  height: auto;
  overflow: visible;
}
.tree-diagram text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  fill: var(--color-fg-muted);
}
.tree-node--center text {
  fill: var(--color-fg);
  font-weight: 700;
}

/* Timeline bars */
.timeline-bars {
  display: grid;
  gap: var(--space-2);
}
.timeline-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  gap: var(--space-2);
}
.timeline-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-fg-muted);
}
.timeline-track {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.timeline-fill {
  height: 100%;
  width: 0;
  background: var(--color-accent);
  border-radius: var(--radius);
  transition: width 700ms ease;
}
.reveal.is-visible .timeline-fill {
  width: var(--fill);
}

/* Stat tiles */
.stat-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
@media (max-width: 640px) {
  .stat-tiles { grid-template-columns: repeat(2, 1fr); }
}
.stat-tile {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}
.stat-value {
  font-size: 22px;
  font-weight: 800;
}
.stat-note {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-fg-muted);
}

/* Compare panel */
.compare-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.compare-col {
  border-top: 2px solid var(--color-border);
  padding-top: var(--space-2);
}
.compare-col--with {
  border-top-color: var(--color-accent);
}
.compare-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--color-fg-muted);
  margin-bottom: var(--space-1);
}
.compare-col--with .compare-label {
  color: var(--color-accent);
}
.compare-col p {
  font-size: 14px;
  color: var(--color-fg-muted);
  line-height: 1.5;
}

/* ---- Why copy ---- */
.why-icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-3);
}
.why-copy {
  font-size: 19px;
  line-height: 1.7;
  color: var(--color-fg-muted);
}

/* ---- Contact form ---- */
.contact-form {
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-3);
}
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.field label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--color-fg-muted);
}
.field input,
.field textarea {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-fg);
  font-family: var(--font-display);
  font-size: 16px;
  padding: var(--space-2);
  min-height: 48px;
  transition: border-color var(--transition);
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus,
.field textarea:focus {
  border-color: var(--color-accent);
  outline: none;
}
.form-note {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  min-height: 1.2em;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
}
.wordmark--footer { font-size: 16px; }
.footer-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-fg-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-meta a {
  text-decoration: none;
  color: var(--color-fg-muted);
  transition: color var(--transition);
}
.footer-meta a:hover, .footer-meta a:focus-visible { color: var(--color-accent); }
.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-fg-muted);
  width: 100%;
  margin-top: var(--space-3);
}

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}