/* Crypto Ledger DeFi - Multi-language site */
:root {
  --color1: #7c0839;
  --color2: #da0123;
  --color3: #08afff;
  --color4: #ffb1f4;
  --color5: #fffaf3;
  --bg-dark: #2d0a14;
  --bg-card: #3d1220;
  --text: #1a0a0f;
  --text-muted: #4a2535;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 10px 40px rgba(124, 8, 57, 0.12);
  --shadow-card: 0 4px 24px rgba(124, 8, 57, 0.08);
  --transition: 0.25s ease;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--color5);
  min-height: 100vh;
  overflow-x: hidden;
}

.site-wrap {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 250, 243, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--color4);
  box-shadow: 0 2px 20px rgba(218, 1, 35, 0.06);
}
.site-header .site-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color1);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.logo:hover { color: var(--color2); }

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
}
.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.4em 0.6em;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  color: var(--color2);
  background: rgba(218, 1, 35, 0.08);
}
.main-nav a[aria-current="page"] { font-weight: 600; }

.lang-switcher {
  display: flex;
  gap: 0.3rem;
}
.lang-switcher a {
  padding: 0.4em 0.7em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid rgba(124, 8, 57, 0.25);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.lang-switcher a:hover, .lang-switcher a.active {
  color: var(--color1);
  border-color: var(--color2);
  background: rgba(218, 1, 35, 0.08);
}

/* Hero */
.hero {
  padding: 2.75rem 0 2.25rem;
  background: linear-gradient(135deg, var(--color5) 0%, rgba(255, 177, 244, 0.15) 50%, rgba(8, 175, 255, 0.08) 100%);
  border-bottom: 1px solid rgba(124, 8, 57, 0.1);
}
.hero h1 {
  margin: 0;
  font-size: clamp(1.55rem, 4vw, 2.05rem);
  font-weight: 700;
  color: var(--color1);
  line-height: 1.28;
  text-align: center;
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}

/* Content blocks - alternating styles */
.main-content { padding-bottom: 3rem; }

.content-block {
  margin-bottom: 2.5rem;
}
.content-block h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  color: var(--color1);
  font-weight: 700;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color4);
}
.content-block h3 {
  margin: 1.35rem 0 0.65rem;
  font-size: 1.22rem;
  color: var(--color2);
  font-weight: 600;
}
.content-block p {
  margin: 0 0 1rem;
  color: var(--text);
}
.content-block ul, .content-block ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  color: var(--text);
}
.content-block li { margin-bottom: 0.4rem; }
.content-block a {
  color: var(--color3);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.content-block a:hover {
  color: var(--color1);
  border-bottom-color: var(--color1);
}

/* Block variant: dark card */
.block-dark {
  background: linear-gradient(145deg, var(--bg-dark) 0%, var(--bg-card) 100%);
  color: var(--color5);
  padding: 2rem;
  border-radius: var(--radius-lg);
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow);
}
.block-dark h2 { color: var(--color4); border-bottom-color: rgba(255, 177, 244, 0.3); }
.block-dark h3 { color: var(--color3); }
.block-dark p, .block-dark li { color: rgba(255, 250, 243, 0.92); }
.block-dark a { color: var(--color3); }
.block-dark a:hover { color: var(--color4); }

/* Block variant: accent border */
.block-accent {
  border-left: 4px solid var(--color2);
  padding-left: 1.5rem;
  margin-bottom: 2.5rem;
  background: rgba(218, 1, 35, 0.04);
  padding: 1.5rem 1.5rem 1.5rem calc(1.5rem + 4px);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* Images */
.content-block figure, .block-dark figure, .block-accent figure {
  margin: 1.25rem 0;
}
.content-block img, .block-dark img, .block-accent img {
  max-width: 100%;
  height: auto;
  width: 100%;
  max-width: 720px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.content-block figcaption, .block-dark figcaption {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  text-align: center;
}
.block-dark figcaption { color: rgba(255, 250, 243, 0.7); }

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1.25rem 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(124, 8, 57, 0.12);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(124, 8, 57, 0.1);
}
th {
  background: var(--color1);
  color: var(--color5);
  font-weight: 600;
}
tr:nth-child(even) { background: rgba(124, 8, 57, 0.04); }
tr:hover { background: rgba(8, 175, 255, 0.05); }
.block-dark .table-wrap { border-color: rgba(255,255,255,0.1); }
.block-dark th { background: var(--color2); }
.block-dark tr:nth-child(even) { background: rgba(255,255,255,0.05); }

/* FAQ */
.faq-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.faq-list li {
  margin-bottom: 0.5rem;
  border: 1px solid rgba(124, 8, 57, 0.15);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color5);
}
.faq-q {
  margin: 0;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--color1);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
  transition: background var(--transition);
}
.faq-q:hover { background: rgba(255, 177, 244, 0.12); }
.faq-q::after {
  content: '+';
  font-size: 1.35rem;
  color: var(--color2);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-list li.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  margin: 0;
  padding: 0 1.25rem 1rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-list li.open .faq-a { max-height: 500px; }
.faq-a p {
  margin: 0;
  padding-top: 0.25rem;
  font-size: 0.98rem;
  color: var(--text);
  border-top: 1px solid rgba(124, 8, 57, 0.1);
  padding-top: 0.75rem;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: var(--color5);
  padding: 2.5rem 0 2rem;
  margin-top: 3rem;
  border-top: 2px solid var(--color2);
}
.site-footer .site-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}
.footer-nav h4 {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--color4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-nav li { margin-bottom: 0.4rem; }
.footer-nav a {
  color: rgba(255, 250, 243, 0.85);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--color3); }
.footer-lang {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.footer-lang a {
  color: rgba(255, 250, 243, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-lang a:hover { color: var(--color4); }
.footer-copy {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.88rem;
  color: rgba(255, 250, 243, 0.6);
  grid-column: 1 / -1;
}

/* Mobile */
@media (max-width: 768px) {
  .site-header .site-wrap { flex-direction: column; align-items: stretch; }
  .main-nav ul { justify-content: center; }
  .lang-switcher { justify-content: center; }
  .hero { padding: 2rem 0 1.75rem; }
  .site-footer .site-wrap { grid-template-columns: 1fr; }
  .content-block img, .block-dark img { max-width: 100%; }
}

@media (max-width: 480px) {
  body { font-size: 15px; }
  .content-block h2 { font-size: 1.35rem; }
  .block-dark, .block-accent { padding: 1.25rem; }
}