:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --success: #3fb950;
  --warning: #d29922;
  --error: #f85149;
  --border: #30363d;
  --code-bg: #0d1117;
  --gradient-start: #1a1f35;
  --gradient-end: #0d1117;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica,
    Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

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

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

code {
  font-family: "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;
  background: var(--bg-tertiary);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

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

pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

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

.nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo {
  font-size: 1.75rem;
}

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

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(
    180deg,
    var(--gradient-start) 0%,
    var(--gradient-end) 100%
  );
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--border);
}

.hero-content {
  text-align: center;
  padding: 4rem 2rem 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--text-primary) 0%,
    var(--accent) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.tagline {
  font-size: 1.5rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1rem;
}

.description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
  color: var(--text-primary);
}

/* Terminal Preview */
.terminal-preview {
  max-width: 700px;
  margin: 3rem auto 0;
  padding: 0 2rem;
}

.terminal {
  background: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
}

.terminal-header {
  background: var(--bg-tertiary);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red {
  background: #ff5f56;
}
.terminal-dot.yellow {
  background: #ffbd2e;
}
.terminal-dot.green {
  background: #27c93f;
}

.terminal-title {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-left: 0.5rem;
}

.terminal-body {
  padding: 1.5rem;
}

.terminal-body pre {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
}

.terminal-body .prompt {
  color: var(--success);
}

.terminal-body .success {
  color: var(--success);
}

.terminal-body .info {
  color: var(--accent);
}

/* Features Section */
.features {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.feature-card pre {
  font-size: 0.8rem;
}

/* Installation Section */
.installation {
  background: var(--bg-secondary);
  padding: 5rem 2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.installation h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.install-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.tab-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

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

.tab-content {
  display: none;
  max-width: 800px;
  margin: 0 auto;
}

.tab-content.active {
  display: block;
}

.content {
  max-width: 800px;
  margin: 0 auto;
  display: block;
}

.install-note {
  text-align: center;
  color: var(--text-secondary);
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.installation > pre {
  max-width: 500px;
  margin: 0 auto;
}

/* Usage Section */
.usage {
  padding: 5rem 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.usage h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.usage-steps {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.step-number {
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: var(--bg-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  margin-bottom: 0.75rem;
}

/* Commands Section */
.commands {
  background: var(--bg-secondary);
  padding: 5rem 2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.commands h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.commands-table {
  max-width: 700px;
  margin: 0 auto;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--text-secondary);
}

td:first-child {
  white-space: nowrap;
}

/* Config Section */
.config {
  padding: 5rem 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.config h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.config > p {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto 2rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-top: 0.25rem;
}

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

.footer-links a {
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Config note */
.config-note {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.config-note strong {
  color: var(--accent);
}

.config-note code {
  background: var(--bg-secondary);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .tagline {
    font-size: 1.25rem;
  }

  .step {
    flex-direction: column;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}