:root {
  --bitcoin-orange: #F7931A;
  --bitcoin-orange-light: #FFF3E0;
  --bitcoin-orange-dark: #C47A15;
  --nostr-purple: #8B5CF6;
  --nostr-purple-light: #F3F0FF;
  --nostr-purple-dark: #6D28D9;
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --text: #1A1A1A;
  --text-secondary: #555;
  --border: #E1E4E8;
  --code-bg: #F0F0F0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 24px;
  background: var(--bg);
}

a {
  color: var(--nostr-purple-dark);
  text-decoration: none;
}

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

h1 {
  border-bottom: 3px solid var(--bitcoin-orange);
  padding-bottom: 12px;
  margin-top: 32px;
  color: var(--text);
}

h2 {
  border-bottom: 1px solid var(--nostr-purple-light);
  padding-bottom: 8px;
  margin-top: 28px;
  color: var(--nostr-purple-dark);
}

h3 {
  margin-top: 24px;
  color: var(--bitcoin-orange-dark);
}

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  color: var(--nostr-purple-dark);
}

pre {
  background: #282c34;
  color: #abb2bf;
  padding: 16px 20px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85em;
  line-height: 1.5;
  border-left: 4px solid var(--bitcoin-orange);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

blockquote {
  border-left: 4px solid var(--nostr-purple);
  margin: 0;
  padding: 8px 16px;
  color: var(--text-secondary);
  background: var(--nostr-purple-light);
  border-radius: 0 4px 4px 0;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0;
}

th {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
  background: var(--bitcoin-orange-light);
  color: var(--bitcoin-orange-dark);
  font-weight: 600;
}

td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

tr:nth-child(even) {
  background: var(--bg);
}

ul, ol {
  padding-left: 24px;
}

li {
  margin: 4px 0;
}

li::marker {
  color: var(--bitcoin-orange);
}

ol li::marker {
  color: var(--nostr-purple);
}

hr {
  border: none;
  border-top: 2px solid;
  border-image: linear-gradient(to right, var(--bitcoin-orange), var(--nostr-purple)) 1;
  margin: 32px 0;
}

.nav {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 32px;
  border-top: 4px solid var(--bitcoin-orange);
}

.nav h3 {
  margin-top: 0;
  margin-bottom: 12px;
  color: var(--text);
  font-size: 1.3em;
}

.nav h3 span.orange {
  color: var(--bitcoin-orange);
}

.nav h3 span.purple {
  color: var(--nostr-purple);
}

.nav ul {
  list-style: none;
  padding-left: 0;
}

.nav li {
  margin: 6px 0;
}

.nav li::marker {
  content: none;
}

.nav .section {
  font-weight: 600;
  color: var(--nostr-purple);
  margin-top: 16px;
  margin-bottom: 4px;
  font-size: 0.85em;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 1px solid var(--nostr-purple-light);
  padding-bottom: 4px;
}

#content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 40px;
  border-top: 4px solid var(--nostr-purple);
}

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--nostr-purple-dark);
  font-weight: 600;
}

.back-link:hover {
  color: var(--bitcoin-orange);
}

strong {
  color: var(--bitcoin-orange-dark);
}

em {
  color: var(--nostr-purple-dark);
  font-style: italic;
}

@media (max-width: 600px) {
  body {
    padding: 16px 12px;
  }
  #content {
    padding: 20px;
  }
  .nav {
    padding: 16px;
  }
}