:root {
  --bg-color: #0b0f19;
  --surface-color: #111827;
  --border-color: #1f2937;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.15);
  --code-bg: #030712;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: #000;
  padding: 8px;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

.site-header {
  border-bottom: 1px solid var(--border-color);
  background: rgba(17, 24, 39, 0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-mark {
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 3px;
  box-shadow: 0 0 10px var(--accent);
}

.brand-text small {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
}

nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

nav a {
  color: var(--text-muted);
}

nav a:hover, nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration: none;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

h1, h2, h3, h4 {
  color: #ffffff;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.75rem;
  margin-top: 2.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

h3 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}

ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

li {
  margin-bottom: 0.5rem;
}

code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.875em;
  color: #34d399;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.9rem;
  color: #e5e7eb;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  background: var(--accent-glow);
  border-radius: 0 8px 8px 0;
  margin-bottom: 2rem;
  color: #d1fae5;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}

.card h3 {
  margin-top: 0;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  margin-bottom: 0.75rem;
}

.site-footer {
  border-top: 1px solid var(--border-color);
  background: var(--surface-color);
  padding: 3rem 1.5rem 1.5rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col strong {
  display: block;
  color: #ffffff;
  margin-bottom: 1rem;
}

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

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

.footer-col a:hover {
  color: var(--accent);
}

.footer-sub {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: #6b7280;
  text-align: center;
}