/* Crypto Ledger Advanced - Multi-language site */
:root {
  --color1: #7af27a;
  --color2: #dbe367;
  --color3: #81008c;
  --color4: #d21787;
  --color5: #ff768f;
  --bg-dark: #0d0a0f;
  --bg-card: #16121a;
  --text: #e8e6ea;
  --text-muted: #a09ba8;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size: 16px;
  --max-width: 1200px;
  --radius: 12px;
  --radius-lg: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--font-size);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color1);
  text-decoration: none;
}

a:hover {
  color: var(--color2);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(129,0,140,0.15) 100%);
  border-bottom: 1px solid rgba(210,23,135,0.3);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color1);
}

.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}

.nav-main a {
  color: var(--text);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius);
}

.nav-main a:hover {
  background: rgba(122,242,122,0.15);
  color: var(--color1);
  text-decoration: none;
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.lang-switch a {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  background: rgba(129,0,140,0.3);
  color: var(--text);
  font-size: 0.9rem;
}

.lang-switch a:hover {
  background: var(--color3);
  color: #fff;
  text-decoration: none;
}

.lang-switch a.active {
  background: var(--color4);
  color: #fff;
}

/* Main content */
.main-content {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* Block variants */
.hero-block {
  background: linear-gradient(180deg, rgba(129,0,140,0.2) 0%, transparent 60%);
  border: 1px solid rgba(210,23,135,0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.hero-block h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  color: var(--color2);
  line-height: 1.25;
}

.content-block {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(122,242,122,0.1);
}

.content-block h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  color: var(--color4);
  border-bottom: 2px solid var(--color3);
  padding-bottom: 0.5rem;
}

.content-block h3 {
  margin: 1.25rem 0 0.75rem;
  font-size: 1.2rem;
  color: var(--color5);
}

.content-block p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.content-block p:last-child {
  margin-bottom: 0;
}

.highlight-block {
  background: linear-gradient(90deg, rgba(122,242,122,0.08) 0%, rgba(129,0,140,0.08) 100%);
  border-left: 4px solid var(--color1);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border-radius: var(--radius);
  border: 1px solid rgba(210,23,135,0.2);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

th {
  background: rgba(129,0,140,0.25);
  color: var(--color2);
  font-weight: 600;
}

tr:hover td {
  background: rgba(255,255,255,0.02);
}

/* Images in content - not too large */
.content-block img,
.hero-block img {
  max-width: 320px;
  width: 100%;
  border-radius: var(--radius);
  margin: 1rem 0;
  border: 1px solid rgba(210,23,135,0.2);
}

/* FAQ */
.faq-block {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
  border: 1px solid rgba(219,227,103,0.2);
}

.faq-block h2 {
  color: var(--color2);
  margin: 0 0 1.5rem;
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 0.5rem;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-q {
  width: 100%;
  padding: 1rem 1.25rem;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-q:hover {
  background: rgba(122,242,122,0.06);
  color: var(--color1);
}

.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color4);
  flex-shrink: 0;
}

.faq-item.open .faq-q::after {
  content: '−';
}

.faq-a {
  padding: 0 1.25rem 1rem;
  color: var(--text-muted);
  display: none;
}

.faq-item.open .faq-a {
  display: block;
}

/* Footer */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid rgba(129,0,140,0.3);
  padding: 2rem 1.5rem;
  margin-top: 3rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 640px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-menu h4 {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--color3);
}

.footer-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-menu li {
  margin-bottom: 0.5rem;
}

.footer-menu a {
  color: var(--text-muted);
}

.footer-menu a:hover {
  color: var(--color1);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Utilities */
.list-steps {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

.list-steps li {
  margin-bottom: 0.5rem;
}

.strong-note {
  color: var(--color5);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 640px) {
  .site-header {
    padding: 0.75rem 1rem;
  }
  .main-content {
    padding: 1.25rem 1rem;
  }
  .hero-block, .content-block {
    padding: 1.25rem;
  }
  .lang-switch a {
    padding: 0.3rem 0.5rem;
    font-size: 0.85rem;
  }
}

@media (min-width: 768px) {
  .content-block img,
  .hero-block img {
    max-width: 380px;
  }
}