/* Ledger Bitcoin Recovery - Design System */
:root {
  --color1: #0e4456;
  --color2: #0680d9;
  --color3: #ff7c2b;
  --color4: #ffdc26;
  --color5: #fffb84;
  --bg-dark: #0a2d38;
  --bg-card: #0d3845;
  --text: #e8f4f8;
  --text-muted: #9ec4d4;
  --border: rgba(6, 128, 217, 0.3);
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0,0,0,0.2);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
}

* { 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;
}

.site-header {
  background: linear-gradient(135deg, var(--color1) 0%, var(--bg-card) 100%);
  border-bottom: 2px solid var(--color2);
  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;
}
.site-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color5);
  text-decoration: none;
}
.site-logo:hover { color: var(--color4); }
.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}
.nav-main a {
  color: var(--text);
  text-decoration: none;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  transition: background .2s, color .2s;
}
.nav-main a:hover {
  background: rgba(255,220,38,0.15);
  color: var(--color4);
}
.lang-switcher { display: flex; gap: 0.25rem; }
.lang-switcher a {
  padding: 0.35rem 0.6rem;
  text-decoration: none;
  color: var(--text-muted);
  border-radius: 6px;
  font-size: 0.9rem;
  transition: background .2s, color .2s;
}
.lang-switcher a:hover,
.lang-switcher a.active { background: var(--color2); color: #fff; }

.hero-block {
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
  padding: 2.5rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-block h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--color5);
  font-weight: 700;
}
.hero-block .lead {
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto;
  font-size: 1rem;
}

.content-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.block {
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.block:nth-child(odd) {
  background: linear-gradient(135deg, rgba(6,128,217,0.08) 0%, var(--bg-card) 100%);
  border-color: rgba(6, 128, 217, 0.25);
}
.block h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  color: var(--color2);
  border-bottom: 2px solid var(--color3);
  padding-bottom: 0.5rem;
}
.block h3 { margin: 1.25rem 0 0.5rem; font-size: 1.15rem; color: var(--color4); }
.block p { margin: 0 0 1rem; }
.block p:last-child { margin-bottom: 0; }
.block ul, .block ol { margin: 0 0 1rem; padding-left: 1.5rem; }
.block table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}
.block th, .block td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
.block th { background: rgba(6, 128, 217, 0.2); color: var(--color4); }
.block a { color: var(--color2); text-decoration: underline; }
.block a:hover { color: var(--color3); }

.content-section img {
  max-width: 100%;
  height: auto;
  width: 320px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin: 1rem 0;
  display: block;
}

.faq-block {
  background: linear-gradient(135deg, rgba(255,124,43,0.06) 0%, var(--bg-card) 100%);
  border-color: rgba(255, 124, 43, 0.3);
}
.faq-item {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.faq-item summary {
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--color4);
  background: rgba(0,0,0,0.15);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; float: right; font-size: 1.25rem; }
.faq-item[open] summary::after { content: '−'; }
.faq-item .faq-answer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
}

.site-footer {
  background: var(--color1);
  border-top: 2px solid var(--color2);
  padding: 2rem 1.5rem;
  margin-top: 3rem;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.footer-nav h4 { margin: 0 0 0.75rem; font-size: 1rem; color: var(--color4); }
.footer-nav ul { list-style: none; margin: 0; padding: 0; }
.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.25rem 0;
  display: block;
}
.footer-nav a:hover { color: var(--color5); }
.footer-lang h4 { margin: 0 0 0.75rem; font-size: 1rem; color: var(--color4); }
.footer-lang a { color: var(--text-muted); text-decoration: none; margin-right: 1rem; }
.footer-lang a:hover { color: var(--color5); }
.footer-copy {
  grid-column: 1 / -1;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: stretch; }
  .nav-main { justify-content: center; }
  .lang-switcher { justify-content: center; }
  .footer-inner { grid-template-columns: 1fr; }
  .content-section img { width: 100%; max-width: 320px; }
}
@media (max-width: 480px) {
  .block { padding: 1rem; }
  .hero-block { padding: 1.5rem 1rem; }
}