/* Visionframe — shared styles
   Palette and type are defined once here. Change these values to restyle the whole site. */

:root {
  --abyss:   #04121a;
  --hull:    #0b2431;
  --shelf:   #123245;
  --amber:   #e8933a;
  --scan:    #5fd4e8;
  --foam:    #e7eff2;
  --muted:   #82a0ad;

  --measure: 68ch;
  --rail: 76px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--abyss);
  color: var(--foam);
  font-family: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Depth rail: the signature element ----------
   A sonar depth scale runs down the left edge of every page. */

.rail {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--rail);
  border-right: 1px solid rgba(95, 212, 232, 0.16);
  background: linear-gradient(180deg, var(--hull), var(--abyss) 70%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 0 24px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  z-index: 10;
}

.rail span {
  display: block;
  text-align: right;
  padding-right: 10px;
  position: relative;
}

.rail span::after {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  width: 8px;
  height: 1px;
  background: rgba(95, 212, 232, 0.4);
}

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

.page {
  margin-left: var(--rail);
  padding: 0 40px 96px;
}

.wrap {
  max-width: 940px;
  margin: 0 auto;
}

nav {
  display: flex;
  align-items: baseline;
  gap: 28px;
  padding: 26px 0 0;
  flex-wrap: wrap;
}

nav .mark {
  font-family: "Archivo", system-ui, sans-serif;
  font-weight: 800;
  font-stretch: 112%;
  letter-spacing: -0.02em;
  font-size: 19px;
  color: var(--foam);
  text-decoration: none;
  margin-right: auto;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

nav a:hover, nav a:focus-visible { color: var(--scan); }

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

.hero { padding: 76px 0 64px; }

.eyebrow {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--scan);
  margin: 0 0 20px;
}

h1 {
  font-family: "Archivo", system-ui, sans-serif;
  font-weight: 800;
  font-stretch: 115%;
  font-size: clamp(2.4rem, 6.5vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
  max-width: 16ch;
}

h1 em { font-style: normal; color: var(--amber); }

.lede {
  font-size: 1.22rem;
  color: var(--muted);
  max-width: 54ch;
  margin: 0 0 36px;
}

/* ---------- Sonar canvas ---------- */

.sonar {
  width: 100%;
  height: 190px;
  display: block;
  border: 1px solid rgba(95, 212, 232, 0.18);
  background: #061a24;
  margin: 8px 0 0;
}

.sonar-caption {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
  margin: 10px 0 0;
}

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

section { padding: 56px 0; border-top: 1px solid rgba(130, 160, 173, 0.16); }

h2 {
  font-family: "Archivo", system-ui, sans-serif;
  font-weight: 700;
  font-stretch: 110%;
  font-size: 1.7rem;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

h3 {
  font-family: "Archivo", system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 8px;
}

p { max-width: var(--measure); }

a { color: var(--scan); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.card {
  background: var(--hull);
  border: 1px solid rgba(95, 212, 232, 0.14);
  padding: 24px;
}

.card p { color: var(--muted); font-size: 0.95rem; margin: 0; }

/* ---------- Price ---------- */

.price {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 8px;
}

.price .amount {
  font-family: "Archivo", system-ui, sans-serif;
  font-weight: 800;
  font-stretch: 115%;
  font-size: 3rem;
  letter-spacing: -0.03em;
  color: var(--amber);
}

.price .terms {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.buy {
  display: inline-block;
  margin: 22px 0 0;
  padding: 15px 30px;
  background: var(--amber);
  color: var(--abyss);
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--amber);
  transition: background 0.15s ease, color 0.15s ease;
}

.buy:hover, .buy:focus-visible {
  background: transparent;
  color: var(--amber);
}

/* ---------- Legal pages ---------- */

.legal { padding-top: 56px; }

.legal h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  max-width: 22ch;
  margin-bottom: 8px;
}

.legal .updated {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  margin: 0 0 40px;
}

.legal h2 { font-size: 1.25rem; margin-top: 42px; }

.legal ul { max-width: var(--measure); color: var(--foam); }

.legal li { margin-bottom: 8px; }

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

footer {
  border-top: 1px solid rgba(130, 160, 173, 0.16);
  padding: 34px 0 0;
  font-size: 14px;
  color: var(--muted);
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: baseline;
}

footer .org { margin-right: auto; }

footer a { color: var(--muted); text-decoration: none; }
footer a:hover, footer a:focus-visible { color: var(--scan); }

/* ---------- Accessibility and small screens ---------- */

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

@media (max-width: 640px) {
  .rail { display: none; }
  .page { margin-left: 0; padding: 0 20px 72px; }
  body { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}