/* Ledger Cold Wallet Risks — Neon theme, responsive */
:root {
  --color1: #002b4a;
  --color2: #044376;
  --color3: #5361ae;
  --color4: #ad84ed;
  --color5: #ffa9ff;
  --bg-dark: #0a0e1a;
  --bg-card: rgba(4, 67, 118, 0.15);
  --text: #e8ecf4;
  --text-muted: #a0b0c8;
  --border-glow: rgba(173, 132, 237, 0.4);
  --font-main: 'Segoe UI', system-ui, sans-serif;
  --max-width: 1200px;
  --radius: 12px;
  --shadow-glow: 0 0 20px rgba(255, 169, 255, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color4);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}
a:hover {
  color: var(--color5);
  text-shadow: 0 0 8px rgba(255, 169, 255, 0.5);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

/* Layout blocks */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: linear-gradient(180deg, rgba(0, 43, 74, 0.95) 0%, rgba(10, 14, 26, 0.9) 100%);
  border-bottom: 1px solid var(--border-glow);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 16px;
  padding-bottom: 16px;
}
.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color5);
  text-shadow: 0 0 12px rgba(255, 169, 255, 0.4);
}
.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
}
.nav-main a {
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--text);
}
.nav-main a:hover {
  background: rgba(83, 97, 174, 0.3);
  color: var(--color5);
}
.lang-switch {
  display: flex;
  gap: 8px;
  align-items: center;
}
.lang-switch a {
  padding: 6px 12px;
  border: 1px solid var(--color3);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
}
.lang-switch a:hover,
.lang-switch a.active {
  border-color: var(--color5);
  color: var(--color5);
  box-shadow: var(--shadow-glow);
}

/* Hero / page title block */
.hero {
  padding: 40px 0 32px;
  text-align: center;
  background: linear-gradient(180deg, var(--color1) 0%, transparent 70%);
  border-bottom: 1px solid rgba(83, 97, 174, 0.3);
}
.hero h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--color5);
  text-shadow: 0 0 20px rgba(255, 169, 255, 0.3);
  max-width: 800px;
  margin: 0 auto 12px;
  line-height: 1.3;
}
.hero p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Content blocks */
.content-block {
  padding: 36px 0;
}
.content-block:nth-child(even) {
  background: var(--bg-card);
  border-top: 1px solid rgba(83, 97, 174, 0.2);
  border-bottom: 1px solid rgba(83, 97, 174, 0.2);
}
.content-block .container {
  display: grid;
  gap: 24px;
}
.content-block h2 {
  font-size: 1.5rem;
  color: var(--color4);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-glow);
}
.content-block h3 {
  font-size: 1.2rem;
  color: var(--color3);
  margin: 20px 0 12px;
}
.content-block p {
  margin-bottom: 12px;
  color: var(--text);
}
.content-block ul {
  margin: 12px 0 12px 24px;
}
.content-block li {
  margin-bottom: 6px;
}

/* Card block (for tables / feature grids) */
.card {
  background: rgba(0, 43, 74, 0.25);
  border: 1px solid rgba(83, 97, 174, 0.3);
  border-radius: var(--radius);
  padding: 20px;
  margin: 16px 0;
  box-shadow: var(--shadow-glow);
}
.card h3 {
  margin-top: 0;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border-radius: var(--radius);
  border: 1px solid rgba(83, 97, 174, 0.3);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(83, 97, 174, 0.2);
}
th {
  background: var(--color2);
  color: var(--color5);
  font-weight: 600;
}
tr:hover td {
  background: rgba(83, 97, 174, 0.1);
}

/* Images in content — not too large */
.content-block figure {
  margin: 20px 0;
  max-width: 480px;
}
.content-block figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-glow);
}
.content-block figcaption {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* FAQ */
.faq-block {
  padding: 36px 0;
  background: var(--bg-card);
}
.faq-block h2 {
  color: var(--color4);
  margin-bottom: 24px;
  text-align: center;
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid rgba(83, 97, 174, 0.3);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  background: rgba(0, 43, 74, 0.2);
}
.faq-item summary {
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--color5);
  transition: transform 0.2s;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item .faq-answer {
  padding: 0 20px 16px;
  color: var(--text-muted);
  border-top: 1px solid rgba(83, 97, 174, 0.2);
}

/* Footer */
.site-footer {
  background: var(--color1);
  border-top: 1px solid var(--border-glow);
  padding: 40px 0 24px;
  margin-top: 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 28px;
  margin-bottom: 28px;
}
.footer-grid h3 {
  font-size: 1rem;
  color: var(--color5);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-grid li {
  margin-bottom: 8px;
}
.footer-grid a {
  color: var(--text-muted);
}
.footer-grid a:hover {
  color: var(--color5);
}
.footer-lang {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(83, 97, 174, 0.3);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Mobile menu (optional toggle for small screens) */
@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-main {
    width: 100%;
  }
  .hero {
    padding: 28px 0 24px;
  }
  .content-block {
    padding: 24px 0;
  }
  th, td {
    padding: 10px 12px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }
  .container {
    padding: 0 16px;
  }
  .hero h1 {
    font-size: 1.35rem;
  }
}