/* The Code Cipher – tokens */
:root {
  --paper: #e9ecef;
  --surface: #f6f7f9;
  --ink: #14181f;
  --muted: #545d6b;
  --rule: #c9cfd7;
  --accent: #2b3fd6;
  --accent-ink: #ffffff;
  --signal: #9a5f0a;
  --signal-bg: #f3d9a8;

  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --measure: 1080px;
  --gutter: 16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0e1116;
    --surface: #161a21;
    --ink: #e6e9ee;
    --muted: #98a1ae;
    --rule: #2a3039;
    --accent: #8c9bff;
    --accent-ink: #0e1116;
    --signal: #e8a33d;
    --signal-bg: #3a2a10;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0e1116;
  --surface: #161a21;
  --ink: #e6e9ee;
  --muted: #98a1ae;
  --rule: #2a3039;
  --accent: #8c9bff;
  --accent-ink: #0e1116;
  --signal: #e8a33d;
  --signal-bg: #3a2a10;
  color-scheme: dark;
}
@media (min-width: 720px) {
  :root { --gutter: 40px; }
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, .button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
h1, h2, h3 { margin: 0; }
.wrap {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 16px;
  top: 12px;
  background: var(--surface);
  padding: 8px 12px;
  z-index: 10;
}

/* Header */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 24px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font: 700 18px/1 var(--display);
  letter-spacing: -0.01em;
}
.site-header nav {
  display: flex;
  gap: 20px;
  font: 500 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover { color: var(--ink); }

/* Hero */
.hero {
  padding-top: clamp(40px, 10vw, 112px);
  padding-bottom: clamp(56px, 10vw, 120px);
}
.key {
  display: flex;
  gap: 12px;
  margin: 0 0 28px;
  font: 400 12px/1.9 var(--mono);
  color: var(--muted);
}
.key-label {
  flex-shrink: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
}
.key-pairs {
  display: flex;
  flex-wrap: wrap;
  gap: 0 12px;
}
.key-pairs span {
  border-radius: 3px;
  padding: 0 3px;
  margin: 0 -3px;
  transition: background-color 0.3s, color 0.3s;
}
.key-pairs span.hit {
  background: var(--signal-bg);
  color: var(--ink);
  transition: none;
}
.hero h1 {
  max-width: 17ch;
  text-wrap: balance;
  font: 800 clamp(44px, 9vw, 112px)/0.98 var(--display);
  letter-spacing: -0.035em;
  font-variation-settings: "opsz" 96;
}
.hero h1 .word { display: inline-block; white-space: nowrap; }
.hero h1 .ch { display: inline-block; text-align: center; }
.hero h1 .ch.enc { color: var(--accent); }
.lede {
  max-width: 38rem;
  margin: 32px 0 0;
  font-size: clamp(18px, 2.2vw, 21px);
  color: var(--muted);
}

/* Sections */
.section {
  padding-block: 48px;
  border-top: 1px solid var(--rule);
}
.section:last-child { padding-bottom: 72px; }
.eyebrow {
  margin-bottom: 28px;
  font: 500 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* Product */
.product {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px 28px;
  padding: clamp(20px, 4vw, 36px);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 16px;
}
.product-icon { border-radius: 20px; }
.product-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
}
.product h3 {
  font: 700 clamp(30px, 4vw, 40px)/1.05 var(--display);
  letter-spacing: -0.02em;
}
.status {
  font: 500 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--signal);
  padding: 6px 8px;
  border: 1px solid currentColor;
  border-radius: 999px;
}
.product-line { max-width: 40rem; margin: 12px 0 0; }
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 6px 24px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-size: 15px;
  color: var(--muted);
}
.facts li::before {
  content: "→ ";
  font-family: var(--mono);
  color: var(--accent);
}
.product-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin: 28px 0 0;
}
.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  text-decoration: none;
}
.button:hover { filter: brightness(1.1); }
.next {
  margin: 20px 0 0;
  font: 400 14px/1.5 var(--mono);
  color: var(--muted);
}

/* Principles */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px 40px;
  margin: 0;
}
.principles dt {
  font: 700 21px/1.2 var(--display);
  letter-spacing: -0.01em;
}
.principles dd { margin: 8px 0 0; color: var(--muted); }

/* Contact & footer */
.contact-line {
  margin: 0;
  max-width: 40rem;
  font: 500 clamp(22px, 3vw, 30px)/1.3 var(--display);
  letter-spacing: -0.01em;
}
.contact-line a { overflow-wrap: anywhere; }
.site-footer {
  padding-block: 24px 40px;
  font: 400 13px/1 var(--mono);
  color: var(--muted);
}

@media (max-width: 560px) {
  .product { grid-template-columns: 1fr; }
  .product-icon { width: 72px; height: 72px; border-radius: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .key-pairs span { transition: none; }
}