/* Shared styling for Beacon legal & guide pages (zolvus.dev/beacon/*).
   Mirrors the marketing site's design system: black / white / cyan #57C7D6,
   Century Gothic. Self-contained — no external fonts or scripts. */

:root {
  --bg: #000000;
  --bg-soft: #0a0b0c;
  --panel: #0f1113;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.22);
  --ink: #ffffff;
  --ink-soft: rgba(255, 255, 255, 0.66);
  --ink-faint: rgba(255, 255, 255, 0.42);
  --cyan: #57c7d6;
  --cyan-deep: #2b8a97;
  --maxw: 760px;
  --font: "Century Gothic", "URW Gothic", "Avant Garde", "Questrial",
    "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* ---------- top bar ---------- */
.doc-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1.1rem, 5vw, 2.5rem);
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.doc-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.doc-nav__brand svg {
  width: 26px;
  height: 26px;
}

.doc-nav__word {
  font-weight: 700;
  letter-spacing: 0.22em;
  font-size: 0.95rem;
  color: var(--ink);
}

.doc-nav a.doc-nav__back {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.doc-nav a.doc-nav__back:hover {
  color: var(--ink);
  text-decoration: none;
}

/* ---------- layout ---------- */
.doc {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 4.5rem) clamp(1.2rem, 5vw, 2rem)
    clamp(4rem, 9vw, 7rem);
}

.doc__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.72rem;
  color: var(--cyan);
  margin: 0 0 1rem;
}

.doc h1 {
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 0.6rem;
}

.doc__meta {
  color: var(--ink-faint);
  font-size: 0.9rem;
  margin: 0 0 2.6rem;
}

.doc__lead {
  color: var(--ink-soft);
  font-size: 1.08rem;
  margin: 0 0 2.4rem;
}

.doc h2 {
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 2.8rem 0 0.9rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}

.doc h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 1.8rem 0 0.6rem;
  color: var(--ink);
}

.doc p {
  color: var(--ink-soft);
  margin: 0 0 1.1rem;
}

.doc strong {
  color: var(--ink);
  font-weight: 700;
}

.doc ul,
.doc ol {
  color: var(--ink-soft);
  margin: 0 0 1.3rem;
  padding-left: 1.3rem;
}

.doc li {
  margin: 0 0 0.55rem;
}

.doc li::marker {
  color: var(--cyan-deep);
}

.doc code {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", monospace;
  font-size: 0.88em;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  color: var(--ink);
}

.doc a {
  color: var(--cyan);
}

/* callout */
.doc__note {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin: 1.6rem 0;
}

.doc__note p {
  margin: 0;
  color: var(--ink-soft);
}

.doc__note strong {
  color: var(--cyan);
}

/* numbered how-to steps */
.step {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.3rem 1.4rem;
  margin: 0 0 1.1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
}

.step__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: var(--cyan);
  color: #04181c;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.7rem;
}

.step h3 {
  margin: 0 0 0.5rem;
}

.step p:last-child,
.step ul:last-child {
  margin-bottom: 0;
}

/* small table for definitions */
.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.6rem;
  font-size: 0.95rem;
}

.doc th,
.doc td {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.doc th {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--line-strong);
}

.doc td {
  color: var(--ink-soft);
}

.doc__toc {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1.4rem;
  margin: 0 0 2.6rem;
}

.doc__toc p {
  margin: 0 0 0.6rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.7rem;
}

.doc__toc ul {
  margin: 0;
  columns: 2;
  column-gap: 2rem;
}

/* ---------- footer (shared across all Beacon pages) ---------- */
.footer {
  border-top: 1px solid var(--line);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.6rem clamp(1.2rem, 5vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  font-size: 0.9rem;
  color: var(--ink);
}

.footer__links {
  display: flex;
  gap: 1.4rem;
  font-size: 0.9rem;
}

.footer__links a {
  color: var(--ink-soft);
  transition: color 0.2s ease;
}

.footer__links a:hover {
  color: var(--cyan);
  text-decoration: none;
}

.footer__fine {
  color: var(--ink-faint);
  font-size: 0.8rem;
  margin: 0;
  flex-basis: 100%;
  text-align: center;
}

@media (max-width: 560px) {
  .doc__toc ul {
    columns: 1;
  }
}