/* Crypto Ledger App - Digital Asset Management - Multi-language */
:root {
  --color1: #1b2317;
  --color2: #1f5741;
  --color3: #ff5017;
  --color4: #ffd148;
  --color5: #ffffc2;
  --bg-dark: #0f1510;
  --bg-card: #161d18;
  --text: #1b2317;
  --text-muted: #2d3d2a;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 8px 32px rgba(27, 35, 23, 0.12);
  --shadow-card: 0 4px 20px rgba(31, 87, 65, 0.1);
  --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, 255, 194, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--color4);
  box-shadow: 0 2px 16px rgba(31, 87, 65, 0.08);
}
.site-header .site-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}
.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 0.75rem;
}
.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(31, 87, 65, 0.1);
}
.main-nav a[aria-current="page"] { font-weight: 600; }

.lang-switcher {
  display: flex;
  gap: 0.25rem;
}
.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(31, 87, 65, 0.3);
  background: #fff;
  transition: all var(--transition);
}
.lang-switcher a:hover, .lang-switcher a.active {
  color: var(--color2);
  border-color: var(--color2);
  background: rgba(31, 87, 65, 0.08);
}
.lang-switcher a.active { border-color: var(--color3); color: var(--color3); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color2) 0%, var(--color1) 100%);
  color: var(--color5);
  padding: 2.5rem 0;
  margin-bottom: 2rem;
}
.hero h1 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.3;
  font-weight: 700;
  text-align: center;
}

/* Main content blocks */
.main-content { padding-bottom: 3rem; }

.content-block {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(31, 87, 65, 0.12);
}
.content-block.block-dark {
  background: var(--bg-card);
  color: var(--color5);
  border-color: rgba(255, 255, 255, 0.06);
}
.content-block.block-dark h2, .content-block.block-dark h3 { color: var(--color4); }
.content-block.block-dark a { color: var(--color4); }
.content-block.block-dark p, .content-block.block-dark li { color: rgba(255, 255, 194, 0.92); }
.content-block.block-accent {
  background: linear-gradient(135deg, rgba(255, 209, 72, 0.2) 0%, rgba(255, 80, 23, 0.08) 100%);
  border-color: rgba(255, 80, 23, 0.2);
}
.content-block h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.45rem;
  color: var(--color2);
}
.content-block h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 1.2rem;
  color: var(--color1);
}
.content-block p { margin: 0 0 1rem; }
.content-block p:last-child { margin-bottom: 0; }
.content-block ul, .content-block ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}
.content-block li { margin-bottom: 0.35rem; }
.content-block a {
  color: var(--color2);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.content-block a:hover { color: var(--color3); }

/* Images - not very large */
.content-block figure, .article-figure {
  margin: 1.5rem 0;
  text-align: center;
}
.content-block img, .article-figure img {
  max-width: 100%;
  width: 560px;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: inline-block;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.25rem 0;
  border-radius: var(--radius);
  border: 1px solid rgba(31, 87, 65, 0.2);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  padding: 0.65rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(31, 87, 65, 0.15);
}
th {
  background: rgba(31, 87, 65, 0.12);
  color: var(--color1);
  font-weight: 600;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(31, 87, 65, 0.04); }

/* FAQ */
.faq-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.faq-list > li {
  margin-bottom: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 194, 0.4);
  border-radius: var(--radius);
  border-left: 4px solid var(--color2);
}
.faq-q {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--color1);
  cursor: pointer;
}
.faq-a { margin: 0; }
.faq-a p { margin: 0; font-size: 0.98rem; }
/* FAQ script: answers visible by default; script toggles on click */
.faq-list .faq-a { display: block; }

/* Footer */
.site-footer {
  background: var(--color1);
  color: var(--color5);
  padding: 2.5rem 0 1.5rem;
  margin-top: 3rem;
}
.site-footer .site-wrap { padding-bottom: 1rem; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}
.footer-nav a {
  color: var(--color4);
  text-decoration: none;
  font-size: 0.95rem;
}
.footer-nav a:hover { color: var(--color5); text-decoration: underline; }
.footer-lang {
  text-align: center;
  margin-bottom: 1rem;
}
.footer-lang a {
  color: var(--color4);
  text-decoration: none;
  margin: 0 0.5rem;
  font-size: 0.9rem;
}
.footer-lang a:hover { color: var(--color5); }
.footer-copy {
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 194, 0.75);
  margin: 0;
}

/* Mobile */
@media (max-width: 768px) {
  .site-header .site-wrap { flex-direction: column; align-items: flex-start; }
  .main-nav ul { gap: 0.25rem; }
  .hero { padding: 1.75rem 0; }
  .content-block { padding: 1.25rem; }
  .content-block img, .article-figure img { width: 100%; max-width: 100%; }
  .footer-nav { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  body { font-size: 15px; }
  .site-wrap { padding: 0 1rem; }
}