/* ============================================================
   ATLAS — instrument-panel design system
   Tokens per build brief §2. Dark is the primary identity;
   light variant provided via prefers-color-scheme.
   ============================================================ */

:root {
  --void: #070A10;
  --surface: #0E131C;
  --ink: #E8ECF2;
  --ink-dim: #8891A3;
  --signal: #33E6C0;
  --gold: #D9A94E;
  --bull: #3FBE8A;
  --bear: #E0654F;
  --hairline: rgba(136, 145, 163, 0.16);
  --hairline-strong: rgba(136, 145, 163, 0.28);
  --signal-dim: rgba(51, 230, 192, 0.12);
  --gold-dim: rgba(217, 169, 78, 0.12);

  --font-display: "Neue Haas Grotesk", "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
}

/* Dark is the committed identity — the site renders dark for every visitor
   regardless of OS/browser theme. Light-variant tokens (kept for reference,
   e.g. print or future marketing surfaces): void #F4F6F9, surface #FFFFFF,
   ink #0E131C, ink-dim #5A6376, signal #0E9C82, gold #A6791F. */

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  background: var(--void);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

::selection { background: var(--signal); color: var(--void); }

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

.wrap {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.mono { font-family: var(--font-mono); }

/* ---------------- Nav ---------------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--void) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.22em;
  color: var(--ink);
}
.wordmark .mark { width: 16px; height: 16px; flex: none; }
.wordmark .mark .apex { fill: var(--signal); }
.wordmark .mark .base { fill: currentColor; }

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
.nav-links a.active { color: var(--signal); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--signal);
  color: #070A10;
  padding: 10px 18px;
  border: 1px solid var(--signal);
  transition: background 0.15s, color 0.15s;
}
.nav-cta:hover, .nav-cta:focus-visible { background: transparent; color: var(--signal); }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--hairline-strong);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 8px 12px;
  cursor: pointer;
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--hairline);
    padding: 8px 24px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; }
  .nav-cta { margin-top: 8px; }
}

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

main { padding-top: 64px; }

.section {
  border-top: 1px solid var(--hairline);
  padding: 96px 0;
}
.section:first-child { border-top: none; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 20px;
}
.eyebrow::before { content: "▸ "; }
.eyebrow.gold { color: var(--gold); }

h1, h2, h3 { font-family: var(--font-display); }

.headline {
  font-size: clamp(28px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.headline .accent { color: var(--signal); }

.sub {
  color: var(--ink-dim);
  font-size: 17px;
  max-width: 56ch;
  margin-top: 20px;
}

/* ---------------- Hero ---------------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 56px;
  align-items: center;
  padding: 88px 0 96px;
}

.hero-copy .headline { max-width: 16ch; }

.cta-row { display: flex; gap: 16px; margin-top: 36px; flex-wrap: wrap; }

.btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 26px;
  display: inline-block;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary {
  background: var(--signal);
  color: #070A10;
  border: 1px solid var(--signal);
}
.btn-primary:hover, .btn-primary:focus-visible { background: transparent; color: var(--signal); }
.btn-ghost {
  border: 1px solid var(--hairline-strong);
  color: var(--ink);
}
.btn-ghost:hover, .btn-ghost:focus-visible { border-color: var(--signal); color: var(--signal); }

/* HUD frame — corner brackets around instrument panels */
.hud-frame {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 4px;
}
.hud-frame::before, .hud-frame::after,
.hud-frame .corner::before, .hud-frame .corner::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--signal);
  border-style: solid;
}
.hud-frame::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.hud-frame::after { top: -1px; right: -1px; border-width: 2px 2px 0 0; }
.hud-frame .corner::before { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; }
.hud-frame .corner::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

.hero-visual canvas {
  display: block;
  width: 100%;
  height: auto;
}

.hud-label {
  position: absolute;
  top: 12px; left: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  z-index: 2;
}
.hud-label .live { color: var(--signal); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding: 56px 0 72px; }
}

/* ---------------- How it works ---------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--hairline);
}

.step {
  border-left: 1px solid var(--hairline);
  padding: 32px 24px 8px;
}
.step:first-child { border-left: none; padding-left: 0; }

.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal);
  letter-spacing: 0.14em;
}

.step h3 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 12px 0 10px;
}

.step p { color: var(--ink-dim); font-size: 14.5px; }

@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(3) { border-left: none; padding-left: 0; }
  .step { padding-bottom: 24px; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .step { border-left: none; padding-left: 0; border-top: 1px solid var(--hairline); }
  .step:first-child { border-top: none; }
}

/* ---------------- Feature grid ---------------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 56px;
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.feature-cell {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 28px 22px;
  transition: background 0.2s;
}
.feature-cell:hover { background: var(--surface); }

.feature-cell h3 {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  margin-bottom: 8px;
}

.feature-cell p { color: var(--ink-dim); font-size: 13.5px; line-height: 1.55; }

.feature-cell .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
  display: block;
  margin-bottom: 14px;
}

@media (max-width: 900px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }

/* ---------------- Dashboard proof ---------------- */

.dash-section-inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 56px;
  align-items: start;
}
@media (max-width: 900px) { .dash-section-inner { grid-template-columns: 1fr; } }

.dashboard {
  font-family: var(--font-mono);
  font-size: 13px;
  width: 100%;
  border-collapse: collapse;
}

.dashboard td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--hairline);
  white-space: nowrap;
}
.dashboard tr:last-child td { border-bottom: none; }

.dashboard .k {
  color: var(--ink-dim);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.dashboard .v { text-align: right; color: var(--ink); }

/* Scoped to .dashboard so these match the specificity of `.dashboard .v`
   above and win on source order — as bare `.v-long` etc. they lose to it
   and every value renders plain ink. */
.dashboard .v-long { color: var(--bull); }
.dashboard .v-short { color: var(--bear); }
.dashboard .v-signal { color: var(--signal); }
.dashboard .v-gold { color: var(--gold); }
.dashboard .v-dim { color: var(--ink-dim); }

/* ---------------- On the chart (proof) ---------------- */

.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 56px;
}
@media (max-width: 700px) { .proof-grid { grid-template-columns: 1fr; } }

.proof-grid figure {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 4px;
}

.proof-grid img {
  display: block;
  width: 100%;
  height: auto;
}

.proof-grid figcaption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 12px 12px 8px;
}

.proof-video { margin-top: 24px; }
.proof-video video {
  display: block;
  width: 100%;
  height: auto;
}

.proof-note {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  color: var(--ink-dim);
  margin-top: 20px;
  max-width: 72ch;
}

/* ---------------- Pricing ---------------- */

.price-panel {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--gold);
  max-width: 520px;
  padding: 40px;
}

.price-panel h3 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.price-figure {
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 24px 0 4px;
}
.price-figure .per { font-size: 16px; color: var(--ink-dim); letter-spacing: 0; font-weight: 400; }
.price-figure .was {
  font-size: 26px;
  font-weight: 400;
  color: var(--ink-dim);
  text-decoration: line-through;
  margin-right: 12px;
  vertical-align: 8px;
}

.price-note { color: var(--ink-dim); font-size: 13px; font-family: var(--font-mono); }

.billing-toggle {
  display: inline-flex;
  border: 1px solid var(--hairline-strong);
  margin: 28px 0 8px;
}
.billing-toggle button {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: none;
  border: none;
  color: var(--ink-dim);
  padding: 10px 20px;
  cursor: pointer;
}
.billing-toggle button.active {
  background: var(--gold);
  color: #070A10;
}

.included {
  list-style: none;
  margin: 28px 0 32px;
}
.included li {
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
  font-size: 14.5px;
}
.included li:last-child { border-bottom: none; }
.included li::before {
  content: "✓";
  font-family: var(--font-mono);
  color: var(--signal);
  margin-right: 12px;
}

.price-panel .btn { width: 100%; text-align: center; }

/* ---------------- FAQ / Docs ---------------- */

.faq { margin-top: 48px; max-width: 760px; }

.faq details {
  border-bottom: 1px solid var(--hairline);
}
.faq details:first-child { border-top: 1px solid var(--hairline); }

.faq summary {
  cursor: pointer;
  padding: 20px 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.01em;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 18px;
  font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }

.faq .a { color: var(--ink-dim); padding: 0 0 24px; max-width: 64ch; font-size: 15px; }

/* Docs steps */
.doc-steps { margin-top: 48px; max-width: 760px; counter-reset: docstep; }

.doc-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--hairline);
}
.doc-step:first-child { border-top: 1px solid var(--hairline); }

.doc-step .n {
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 13px;
  padding-top: 3px;
}

.doc-step h3 { font-size: 17px; font-weight: 800; margin-bottom: 8px; letter-spacing: -0.01em; }
.doc-step p { color: var(--ink-dim); font-size: 14.5px; max-width: 60ch; }

/* ---------------- Feature deep-dive (Features page) ---------------- */

.module {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 56px;
  padding: 72px 0;
  border-top: 1px solid var(--hairline);
}
.module:first-of-type { border-top: none; }

.module h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
}

.module .what { color: var(--ink); font-size: 15.5px; margin-bottom: 16px; }
.module .why { color: var(--ink-dim); font-size: 14.5px; }

.param-table {
  font-family: var(--font-mono);
  font-size: 12.5px;
  width: 100%;
  border-collapse: collapse;
}
.param-table caption {
  text-align: left;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding-bottom: 12px;
}
.param-table td {
  border-bottom: 1px solid var(--hairline);
  padding: 9px 12px 9px 0;
  vertical-align: top;
}
.param-table td:first-child { color: var(--ink); white-space: nowrap; padding-right: 24px; }
.param-table td:last-child { color: var(--ink-dim); }

@media (max-width: 900px) {
  .module { grid-template-columns: 1fr; gap: 28px; padding: 56px 0; }
}

/* ---------------- CTA band ---------------- */

.cta-band { text-align: center; padding: 110px 0; }
.cta-band .headline { margin: 0 auto; }
.cta-band .cta-row { justify-content: center; }

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

footer {
  border-top: 1px solid var(--hairline);
  padding: 56px 0 48px;
  color: var(--ink-dim);
  font-size: 13px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
  font-weight: 400;
}

.footer-grid a { display: block; padding: 5px 0; color: var(--ink-dim); }
.footer-grid a:hover { color: var(--ink); }
.footer-grid a.active { color: var(--signal); }

.disclosure {
  border: 1px solid var(--hairline);
  padding: 20px 24px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-dim);
  margin-bottom: 32px;
}
.disclosure strong {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
}

.colophon {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------- Legal prose ---------------- */

.legal { max-width: 740px; }

.legal .meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  margin-bottom: 44px;
}

.legal h2 {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
}
.legal h2:first-of-type { margin-top: 0; }

.legal p, .legal li {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 14px;
}

.legal ul, .legal ol { padding-left: 22px; margin-bottom: 14px; }

.legal strong { color: var(--ink); }

.legal .callout {
  border: 1px solid var(--hairline-strong);
  border-left: 2px solid var(--gold);
  background: var(--surface);
  padding: 16px 20px;
  margin: 28px 0;
}
.legal .callout strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.legal .callout p { font-size: 13.5px; margin-bottom: 0; }

/* ---------------- Reveal on scroll ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------------- Focus ---------------- */

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}