/* Ledger Cold Wallet Security - Design system */
:root {
  --color1: #ff0fba;
  --color2: #ff7e52;
  --color3: #ffe742;
  --color4: #fffca2;
  --color5: #d2fff5;
  --dark: #0d0d12;
  --dark2: #1a1a22;
  --text: #e8e8ec;
  --text-muted: #a0a0b0;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
  --font: 'DM Sans', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--dark);
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, .font-display { font-family: var(--font-display); }
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); color: var(--color4); margin: 0 0 1rem; line-height: 1.2; }
h2 { font-size: clamp(1.35rem, 3vw, 1.75rem); color: var(--color5); margin: 2.5rem 0 1rem; }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.35rem); color: var(--color3); margin: 1.5rem 0 0.75rem; }
p { margin: 0 0 1rem; color: var(--text-muted); }
a { color: var(--color2); text-decoration: none; }
a:hover { color: var(--color1); text-decoration: underline; }

/* Layout */
.container { max-width: 900px; margin: 0 auto; padding: 0 1.25rem; }
.container-wide { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }

/* Header */
.site-header {
  background: linear-gradient(180deg, var(--dark2) 0%, transparent 100%);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.logo { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; color: var(--color4); }
.logo a { color: inherit; text-decoration: none; }
.logo a:hover { text-decoration: none; opacity: 0.9; }
.nav-main { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; align-items: center; }
.nav-main a { color: var(--text-muted); font-size: 0.95rem; padding: 0.4rem 0.6rem; border-radius: 8px; }
.nav-main a:hover { color: var(--color5); text-decoration: none; background: rgba(210,255,245,0.08); }
.lang-switch { display: flex; gap: 0.5rem; align-items: center; }
.lang-switch a { color: var(--text-muted); font-size: 0.9rem; padding: 0.35rem 0.6rem; border-radius: 8px; }
.lang-switch a:hover { color: var(--color3); text-decoration: none; background: rgba(255,231,66,0.1); }
.lang-switch .active { color: var(--color3); font-weight: 600; }

/* Hero / intro block */
.hero {
  padding: 3rem 0 2.5rem;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,15,186,0.12) 0%, transparent 55%);
}
.hero h1 { margin-bottom: 1.25rem; }
.hero .lead { font-size: 1.1rem; color: var(--text); max-width: 720px; }

/* Content blocks */
.content-block { padding: 2rem 0; }
.content-block:nth-child(even) { background: rgba(255,255,255,0.02); }
.block-card {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}
.block-card h3 { margin-top: 0; }
.block-accent { border-left: 4px solid var(--color1); padding-left: 1.25rem; margin: 1.5rem 0; }
.block-accent.color2 { border-color: var(--color2); }
.block-accent.color3 { border-color: var(--color3); }
.block-accent.color5 { border-color: var(--color5); }

/* Images */
.content-block img, .block-card img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
  margin: 1rem 0;
  max-height: 280px;
  object-fit: cover;
  width: 100%;
}
figure { margin: 1.5rem 0; }
figure img { margin-bottom: 0.5rem; }
figcaption { font-size: 0.9rem; color: var(--text-muted); }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.95rem; }
th, td { padding: 0.65rem 0.85rem; text-align: left; border: 1px solid rgba(255,255,255,0.08); }
th { background: rgba(255,15,186,0.15); color: var(--color4); font-weight: 600; }
tr:nth-child(even) { background: rgba(255,255,255,0.03); }

/* Lists */
ul, ol { margin: 0 0 1rem; padding-left: 1.5rem; color: var(--text-muted); }
li { margin: 0.35rem 0; }

/* FAQ */
.faq-section { padding: 2.5rem 0; }
.faq-list { margin: 0; padding: 0; list-style: none; }
.faq-item {
  margin: 0 0 0.75rem;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(26,26,34,0.95);
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.faq-q {
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--color5);
  background: rgba(0,0,0,0.2);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
  text-align: left;
  border: none;
  font-family: inherit;
  font-size: 1rem;
}
.faq-q::after { content: '+'; font-size: 1.25rem; color: var(--color2); flex-shrink: 0; transition: transform 0.2s; }
.faq-item.is-open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  padding: 1rem 1.25rem 1.25rem;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.6;
  display: none;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.15);
}
.faq-item.is-open .faq-a { display: block; }

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 2.5rem 0 1.5rem;
  background: var(--dark2);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.footer-grid h4 { font-size: 0.9rem; color: var(--color4); margin: 0 0 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin: 0.35rem 0; }
.footer-grid a { color: var(--text-muted); font-size: 0.9rem; }
.footer-grid a:hover { color: var(--color5); }
.footer-bottom { padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.06); text-align: center; font-size: 0.85rem; color: var(--text-muted); }

/* Utility */
.color1 { color: var(--color1); }
.color2 { color: var(--color2); }
.color3 { color: var(--color3); }
.color4 { color: var(--color4); }
.color5 { color: var(--color5); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

@media (max-width: 640px) {
  .site-header .container { flex-direction: column; align-items: flex-start; }
  .nav-main { width: 100%; }
  .hero { padding: 2rem 0 1.5rem; }
  table { font-size: 0.85rem; }
  th, td { padding: 0.5rem 0.5rem; }
}