/* Crypto Ledger Security - Main Styles */
:root {
  --color1: #121107;
  --color2: #123f2e;
  --color3: #ef6e8a;
  --color4: #f6baa7;
  --color5: #f8efc9;
  --white: #fff;
  --gray: #5a5a52;
  --gray-light: #e8e6e0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color1);
  background: var(--color5);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color2);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color3);
}

/* Layout */
.site-header {
  background: var(--color1);
  color: var(--color5);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(18,17,7,0.2);
}

.header-inner {
  max-width: 1200px;
  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(--color5);
}

.logo a {
  color: inherit;
}

.logo a:hover {
  color: var(--color4);
}

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

.nav-main a {
  color: var(--color5);
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
}

.nav-main a:hover {
  color: var(--color4);
  background: rgba(246,186,167,0.15);
}

.lang-switcher {
  display: flex;
  gap: 0.5rem;
}

.lang-switcher a {
  color: var(--color5);
  padding: 0.35rem 0.6rem;
  border: 1px solid rgba(248,239,201,0.4);
  border-radius: 4px;
  font-size: 0.9rem;
}

.lang-switcher a:hover,
.lang-switcher a.active {
  background: var(--color2);
  border-color: var(--color2);
  color: var(--color5);
}

/* Main content */
.main-content {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* Blocks */
.hero-block {
  background: linear-gradient(135deg, var(--color2) 0%, #0d2a20 100%);
  color: var(--color5);
  padding: 2.5rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.hero-block h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.2;
}

.hero-block p {
  margin: 0;
  opacity: 0.95;
  font-size: 1rem;
}

.content-block {
  margin-bottom: 2.5rem;
}

.content-block h2 {
  color: var(--color2);
  font-size: 1.4rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color4);
}

.content-block h3 {
  color: var(--color1);
  font-size: 1.15rem;
  margin: 1.25rem 0 0.5rem;
}

.content-block p {
  margin: 0 0 1rem;
}

.content-block ul {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

.content-block li {
  margin-bottom: 0.35rem;
}

.card-block {
  background: var(--white);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 10px rgba(18,17,7,0.06);
  border-left: 4px solid var(--color3);
}

.highlight-block {
  background: linear-gradient(90deg, rgba(239,110,138,0.12) 0%, rgba(246,186,167,0.15) 100%);
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  margin: 1.5rem 0;
  border: 1px solid rgba(239,110,138,0.25);
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

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

th, td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border: 1px solid var(--gray-light);
}

th {
  background: var(--color2);
  color: var(--color5);
  font-weight: 600;
}

tr:nth-child(even) {
  background: rgba(248,239,201,0.5);
}

/* Images */
.content-img {
  max-width: 420px;
  margin: 1.25rem 0;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(18,17,7,0.1);
}

/* FAQ */
.faq-block {
  margin-top: 2rem;
}

.faq-item {
  background: var(--white);
  border-radius: 8px;
  margin-bottom: 0.75rem;
  box-shadow: 0 1px 6px rgba(18,17,7,0.06);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  padding: 1rem 1.25rem;
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color2);
  background: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.faq-q:hover {
  background: var(--color5);
}

.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color3);
  flex-shrink: 0;
}

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

.faq-a {
  padding: 0 1.25rem 1rem;
  display: none;
}

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

.faq-a p {
  margin: 0;
  padding-top: 0.25rem;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  background: var(--color1);
  color: var(--color5);
  padding: 2rem 1.5rem;
  margin-top: 3rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-bottom: 1.5rem;
}

.footer-nav a {
  color: var(--color4);
}

.footer-nav a:hover {
  color: var(--color5);
}

.footer-lang {
  margin-bottom: 1rem;
}

.footer-lang a {
  color: var(--color4);
  margin-right: 1rem;
}

.footer-copy {
  font-size: 0.9rem;
  opacity: 0.85;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header {
    padding: 0.75rem 1rem;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-main {
    width: 100%;
  }

  .main-content {
    padding: 1.25rem 1rem;
  }

  .hero-block {
    padding: 1.5rem 1rem;
  }

  table {
    font-size: 0.85rem;
  }

  th, td {
    padding: 0.5rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  .content-img {
    max-width: 100%;
  }
}