:root {
  --color-bg-base: #09090b;
  --color-bg-surface: #18181b;
  --color-primary: #ffffff;
  --color-accent: #3b82f6;
  --color-text-main: #f4f4f5;
  --color-text-muted: #a1a1aa;
  --color-border: #27272a;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  margin-bottom: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

a:hover {
  color: #2563eb;
}

/* Utilities */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.text-muted { color: var(--color-text-muted); }
.mb-4 { margin-bottom: 2rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  border-radius: 4px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
}

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

.btn-primary:hover {
  background: #e4e4e7;
  color: var(--color-bg-base);
}

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

.btn-outline:hover {
  border-color: var(--color-primary);
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 50;
  background: rgba(9, 9, 11, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 5rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: -0.02em;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 450px;
}

.hero-image-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image-wrapper img {
  width: 100%;
  max-width: 480px;
  height: auto;
  display: block;
  border-radius: 16px;
}

/* Features Section */
.features {
  padding: 6rem 0;
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-size: 2rem;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
}

.feature-card {
  padding: 0;
}

.feature-icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

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

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

/* Specifications */
.specs {
  padding: 6rem 0;
}

.spec-list {
  display: flex;
  flex-direction: column;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.spec-item:first-child {
  border-top: 1px solid var(--color-border);
}

.spec-item strong {
  font-weight: 500;
}

/* Footer */
footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.5rem;
  }
}