/* Ledger Cold Wallet Official - Neon theme, responsive */
:root {
  --color1: #003210;
  --color2: #006855;
  --color3: #88a400;
  --color4: #e9df4b;
  --color5: #ffffc0;
  --bg-dark: #001a0f;
  --bg-card: #002a18;
  --text: #e8f5e9;
  --text-muted: #a5d6a7;
  --border: rgba(136, 164, 0, 0.3);
  --shadow: 0 4px 20px rgba(0, 102, 85, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size: 1rem;
  --line-height: 1.6;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(16px, 2vw, 18px);
  line-height: var(--line-height);
  color: var(--text);
  background: var(--bg-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color4);
  text-decoration: none;
  transition: color 0.2s, box-shadow 0.2s;
}

a:hover {
  color: var(--color5);
  text-decoration: underline;
}

/* Layout */
.site-header {
  background: var(--bg-card);
  border-bottom: 2px solid var(--border);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color4);
}

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

.logo a:hover {
  text-decoration: none;
  color: var(--color5);
}

/* Nav */
.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  color: var(--text-muted);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
}

.nav-menu a:hover {
  color: var(--color4);
  background: rgba(136, 164, 0, 0.1);
}

/* Lang switcher */
.lang-switcher {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.lang-switcher a {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 102, 85, 0.3);
  color: var(--color5);
  font-size: 0.9rem;
}

.lang-switcher a:hover {
  background: var(--color2);
  color: var(--color5);
}

.lang-switcher a.active {
  background: var(--color3);
  color: var(--color1);
}

/* Main */
main {
  flex: 1;
  padding: 2rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

/* Blocks */
.hero {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 102, 85, 0.2) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

.hero h1 {
  color: var(--color4);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin: 0 0 1rem;
  line-height: 1.3;
}

.hero p {
  margin: 0;
  color: var(--text-muted);
  max-width: 72ch;
  margin-left: auto;
  margin-right: auto;
}

.section {
  margin-bottom: 2.5rem;
}

.section h2 {
  color: var(--color3);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.section h3 {
  color: var(--color4);
  font-size: clamp(1.1rem, 2.5vw, 1.25rem);
  margin: 1.25rem 0 0.75rem;
}

.section p {
  margin: 0 0 1rem;
  color: var(--text);
}

.card-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-block h2,
.card-block h3 {
  border-bottom: none;
  margin-top: 0;
}

.figure-wrap {
  margin: 1.5rem 0;
  text-align: center;
}

.figure-wrap img {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  max-height: 280px;
  width: auto;
  margin: 0 auto;
  object-fit: contain;
}

.figure-wrap figcaption {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  min-width: 400px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: rgba(0, 102, 85, 0.4);
  color: var(--color4);
  font-weight: 600;
}

tr:hover td {
  background: rgba(136, 164, 0, 0.05);
}

/* FAQ */
.faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  background: var(--bg-card);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: inherit;
  font-weight: 600;
  color: var(--color4);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.faq-q:hover {
  color: var(--color5);
  background: rgba(136, 164, 0, 0.08);
}

.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  flex-shrink: 0;
}

.faq-item.is-open .faq-q::after {
  content: '−';
}

.faq-a {
  padding: 0 1.25rem 1rem;
  display: none;
  color: var(--text-muted);
}

.faq-item.is-open .faq-a {
  display: block;
}

.faq-a p {
  margin: 0;
}

/* Footer */
.site-footer {
  background: var(--bg-card);
  border-top: 2px solid var(--border);
  padding: 2rem 1.5rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}

.footer-menu a {
  color: var(--text-muted);
}

.footer-lang {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.footer-lang a {
  margin-right: 1rem;
}

.copyright {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* Utility */
.color1 { color: #003210; }
.color2 { color: #006855; }
.color3 { color: #88a400; }
.color4 { color: #e9df4b; }
.color5 { color: #ffffc0; }

/* Mobile */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-menu {
    flex-direction: column;
    width: 100%;
  }

  main {
    padding: 1.25rem 1rem;
  }

  .hero {
    padding: 1.5rem 1rem;
  }

  th, td {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .lang-switcher {
    width: 100%;
  }
}