:root {
  --bg-color: #050505;
  --text-color: #ffffff;
  --text-secondary: #a1a1aa;
  --border-color: #333333;
  --accent-color: #ffffff;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.nav-links a {
  margin-left: 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

/* Hero Section */
.hero {
  padding: 100px 0;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
  line-height: 1.1;
  background: linear-gradient(to bottom right, #fff, #aaa);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.cta-group {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background-color: #e0e0e0;
}

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

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

/* Features Grid */
.features {
  padding: 80px 0;
  border-top: 1px solid var(--border-color);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 60px;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-card {
  padding: 30px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0) 100%);
  transition: transform 0.2s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: #555;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 20px;
  display: block;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
  font-weight: 600;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Hero Installation & Video */
.hero-install-container {
  margin: 30px auto;
  max-width: 600px;
  text-align: left;
}

.hero-code {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.hero-code code {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', 'Droid Sans Mono', 'Source Code Pro', monospace;
  font-size: 0.95rem;
  color: #e0e0e0;
  line-height: 1.6;
  white-space: pre-wrap;
  flex: 1;
}

.copy-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 5px;
  margin-left: 10px;
  transition: all 0.2s;
  opacity: 0.7;
}

.copy-btn:hover {
  color: var(--text-color);
  opacity: 1;
  transform: scale(1.1);
}

.hero-note {
  margin-top: 15px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.5;
}

.hero-note code {
  background: rgba(255,255,255,0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  color: #f59e0b;
}

.hero-video {
  margin: 50px auto 40px;
  max-width: 600px;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
}

/* Footer */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

footer a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .cta-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}