:root {
  --bg: #0a0a0a;
  --bg-alt: #111;
  --fg: #f0f0f0;
  --fg-muted: #999;
  --accent: #b794f6;
  --accent-hover: #d4bcfa;
  --border: #222;
  --code-bg: #161616;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

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

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

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.nav-links a:hover {
  color: var(--fg);
}

/* Main content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  margin-bottom: 3rem;
  text-align: center;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 4rem;
}

.hero h1 {
  font-size: 5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
}

.tagline {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.description {
  max-width: 600px;
  color: var(--fg-muted);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

.cta {
  display: flex;
  gap: 1rem;
}

.btn {
  padding: 0.875rem 2rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.btn.primary {
  background: var(--accent);
  color: var(--bg);
}

.btn.primary:hover {
  background: var(--accent-hover);
}

.btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
}

.btn.secondary:hover {
  border-color: var(--fg-muted);
}

/* Features */
.features {
  background: var(--bg-alt);
  margin: 0 -2rem;
  padding-left: 2rem;
  padding-right: 2rem;
}

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

.feature {
  padding: 2rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.feature h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.feature p {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* Install */
.install-steps {
  max-width: 700px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  align-items: flex-start;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
}

.step h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.step p {
  color: var(--fg-muted);
  font-size: 0.95rem;
}

.step code {
  display: block;
  background: var(--code-bg);
  padding: 1rem;
  border-radius: 6px;
  font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
  font-size: 0.85rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  margin-top: 0.5rem;
}

.step-note {
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

/* Code block with copy */
.code-block {
  position: relative;
  margin-top: 0.5rem;
}

.code-block code {
  display: block;
  background: var(--code-bg);
  padding: 1rem;
  padding-right: 3rem;
  border-radius: 6px;
  font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
  font-size: 0.95rem;
  overflow-x: auto;
  border: 1px solid var(--border);
}

.copy-btn {
  position: absolute;
  top: 50%;
  right: 0.75rem;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--fg-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.copy-btn:hover {
  color: var(--fg);
  background: var(--border);
}

.copy-btn.copied {
  color: #4ade80;
}

.copy-btn svg {
  width: 18px;
  height: 18px;
}

/* Architecture */
.architecture {
  text-align: center;
}

.arch-note {
  color: var(--fg-muted);
  max-width: 500px;
  margin: 2rem auto 0;
}

/* Use cases */
.use-cases {
  background: var(--bg-alt);
  margin: 0 -2rem;
  padding-left: 2rem;
  padding-right: 2rem;
}

.disk-layout {
  display: inline-block;
  text-align: left;
  background: var(--code-bg);
  padding: 2rem;
  border-radius: 8px;
  font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  line-height: 1.4;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 3rem;
  }

  .tagline {
    font-size: 1.2rem;
  }

  .description {
    font-size: 1rem;
  }

  .cta {
    flex-direction: column;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  nav {
    padding: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }
}