:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --primary: #58a6ff;
  --accent: #bc8cff;
  --text: #c9d1d9;
  --text-bright: #ffffff;
  --text-dim: #8b949e;
  --terminal-bg: #090d13;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

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

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

a:hover {
  text-decoration: underline;
}

/* Navbar */
.navbar {
  background-color: rgba(22, 27, 34, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-bright);
}

.logo-icon {
  color: var(--primary);
  font-size: 1.35rem;
}

.badge {
  font-size: 0.75rem;
  background-color: rgba(88, 166, 255, 0.15);
  color: var(--primary);
  border: 1px solid rgba(88, 166, 255, 0.3);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.95rem;
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  color: var(--text-bright);
  font-weight: 500;
}

.btn-github:hover {
  background-color: var(--border);
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 4.5rem 1.5rem 3.5rem;
  text-align: center;
  background: radial-gradient(circle at 50% 10%, rgba(88, 166, 255, 0.08) 0%, transparent 60%);
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-bright);
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.gradient-text {
  background: linear-gradient(135deg, #58a6ff 0%, #bc8cff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.code-pill {
  display: flex;
  align-items: center;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.4rem 0.5rem 0.4rem 1rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--primary);
}

.copy-btn {
  background-color: rgba(88, 166, 255, 0.15);
  color: var(--primary);
  border: 1px solid rgba(88, 166, 255, 0.3);
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 0.75rem;
  transition: all 0.2s ease;
}

.copy-btn:hover {
  background-color: var(--primary);
  color: #000;
}

.btn-primary {
  background-color: var(--primary);
  color: #000;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-size: 0.95rem;
}

.btn-primary:hover {
  opacity: 0.9;
  text-decoration: none;
}

/* Sections */
.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 2.5rem;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 0.5rem;
}

.section-header p {
  color: var(--text-dim);
}

.features-section, .playground-section, .guides-section {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

/* Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 1.5rem;
}

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

.card-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.card h3, .guide-card h3 {
  font-size: 1.15rem;
  color: var(--text-bright);
  margin-bottom: 0.5rem;
}

.card p, .guide-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.guide-card pre {
  margin-top: 1rem;
  background-color: var(--terminal-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  overflow-x: auto;
}

/* Playground */
.playground-container {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1.5rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}

.component-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0.75rem 0 0.25rem 0.5rem;
}

.nav-category:first-child {
  margin-top: 0;
}

.nav-item {
  background: none;
  border: none;
  color: var(--text);
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s ease;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-bright);
}

.nav-item.active {
  background-color: rgba(88, 166, 255, 0.15);
  color: var(--primary);
  font-weight: 600;
}

.preview-pane {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.terminal-window {
  background-color: var(--terminal-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.terminal-header {
  background-color: #12161f;
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.terminal-buttons {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

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

.terminal-title {
  margin-left: auto;
  margin-right: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.terminal-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  white-space: pre;
  overflow-x: auto;
  min-height: 200px;
  line-height: 1.4;
}

.code-container {
  background-color: #0b0f14;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0.75rem;
  background-color: #12161f;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.code-container pre {
  padding: 1rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  overflow-x: auto;
  color: #e6edf3;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}