/* Ledger Crypto Wallet — Neon theme, responsive */
:root {
  --color1: #ffb65e;
  --color2: #f6de5b;
  --color3: #001a93;
  --color4: #0058cb;
  --color5: #00aaff;
  --bg-dark: #0a0a12;
  --bg-card: rgba(0, 26, 147, 0.15);
  --text: #e8e8f0;
  --text-muted: #a0a0b8;
  --border-glow: rgba(0, 170, 255, 0.4);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius: 12px;
  --shadow-neon: 0 0 20px rgba(0, 170, 255, 0.2), 0 0 40px rgba(0, 88, 203, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-dark);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Layout blocks */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 18, 0.95);
  border-bottom: 1px solid var(--color4);
  box-shadow: 0 4px 24px rgba(0, 88, 203, 0.15);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color5);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--color2); }
.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
}
.nav-main a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav-main a:hover { color: var(--color5); background: rgba(0, 170, 255, 0.1); }
.lang-switch {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}
.lang-switch a {
  padding: 0.35rem 0.6rem;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: color .2s, background .2s;
}
.lang-switch a:hover,
.lang-switch a.active { color: var(--color2); background: rgba(246, 222, 91, 0.12); }

main { max-width: 900px; margin: 0 auto; padding: 2rem 1.25rem 3rem; }
.hero-block {
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(0, 88, 203, 0.3);
  margin-bottom: 2rem;
}
.hero-block h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color5);
  text-shadow: 0 0 30px rgba(0, 170, 255, 0.3);
}
.hero-block .lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 70ch;
}

.content-block {
  margin-bottom: 2.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(0, 88, 203, 0.2);
}
.content-block:last-of-type { border-bottom: 0; }
h2 {
  font-size: 1.5rem;
  color: var(--color4);
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color4);
}
h3 {
  font-size: 1.2rem;
  color: var(--color1);
  margin: 1.5rem 0 0.75rem;
}
h2 + h3 { margin-top: 1rem; }
p { margin: 0 0 1rem; }
.color1 { color: var(--color1); }
.color2 { color: var(--color2); }
.color3 { color: var(--color3); }
.color4 { color: var(--color4); }
.color5 { color: var(--color5); }

/* Images — not too large */
.content-block img,
.hero-block img {
  max-width: 100%;
  width: 420px;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(0, 170, 255, 0.3);
  box-shadow: var(--shadow-neon);
  margin: 1rem 0;
  display: block;
}
@media (max-width: 480px) {
  .content-block img,
  .hero-block img { width: 100%; }
}

/* Tables */
.table-wrap { overflow-x: auto; margin: 1rem 0; }
table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(0, 88, 203, 0.3);
}
th, td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(0, 88, 203, 0.2);
}
th {
  background: rgba(0, 26, 147, 0.4);
  color: var(--color5);
  font-weight: 600;
}
tr:last-child td { border-bottom: 0; }
tr:hover td { background: rgba(0, 170, 255, 0.05); }

/* Lists */
ul, ol { margin: 0 0 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.35rem; }
ul ul, ol ol { margin-bottom: 0; }

/* Links inside content */
main a {
  color: var(--color5);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s, color .2s;
}
main a:hover { border-bottom-color: var(--color5); color: var(--color2); }

/* FAQ accordion */
.faq-block { margin-top: 2rem; }
.faq-block h2 { margin-bottom: 1rem; }
.faq-item {
  border: 1px solid rgba(0, 88, 203, 0.3);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  background: var(--bg-card);
  overflow: hidden;
}
.faq-q {
  width: 100%;
  padding: 1rem 1.25rem;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color2);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background .2s;
}
.faq-q:hover { background: rgba(0, 170, 255, 0.08); }
.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color5);
  flex-shrink: 0;
  transition: transform .25s;
}
.faq-item.is-open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  padding: 0 1.25rem 1rem;
  display: none;
  color: var(--text-muted);
  line-height: 1.6;
}
.faq-item.is-open .faq-a { display: block; }
.faq-a p:last-child { margin-bottom: 0; }

/* Footer */
.site-footer {
  background: rgba(0, 26, 147, 0.2);
  border-top: 1px solid var(--color4);
  margin-top: 3rem;
  padding: 2rem 1.25rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 600px) {
  .footer-inner { grid-template-columns: 1fr; }
}
.footer-col h4 {
  font-size: 0.9rem;
  color: var(--color5);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.25rem 0;
  display: inline-block;
  transition: color .2s;
}
.footer-col a:hover { color: var(--color2); }
.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(0, 88, 203, 0.3);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}