* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  border-bottom: 1px solid #334155;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo { font-size: 1.8rem; font-weight: 700; }
.logo span { color: #60a5fa; }
.nav-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-link {
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}
.nav-link:hover { color: #60a5fa; }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}
.hero-content {
  flex: 1;
  max-width: 600px;
}
.hero-content h1 {
  font-size: 4.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-content h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #94a3b8;
}
.hero-content p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  color: #94a3b8;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn-primary {
  background: #3b82f6;
  color: white;
  padding: 14px 32px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
}
.btn-primary:hover {
  background: #2563eb;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}
.btn-primary.large {
  padding: 18px 40px;
  font-size: 1.2rem;
}
.btn-secondary {
  background: transparent;
  color: #e2e8f0;
  border: 2px solid #475569;
  padding: 12px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.btn-secondary:hover {
  border-color: #60a5fa;
  color: #60a5fa;
}
.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
}
.mockup {
  width: 500px;
  height: 350px;
  background: #1e293b;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  transform: rotate(-5deg);
}
.screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Sections */
section {
  padding: 100px 0;
}
.section-title {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 4rem;
  color: #f1f5f9;
}

/* Features */
.features {
  background: #1e293b;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}
.feature-card {
  background: #0f172a;
  padding: 2.5rem;
  border-radius: 16px;
  text-align: center;
  border: 1px solid #334155;
  transition: transform 0.3s;
}
.feature-card:hover {
  transform: translateY(-10px);
  border-color: #60a5fa;
}
.feature-card i {
  color: #60a5fa;
  margin-bottom: 1.5rem;
}
.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Tech Stack */
.tech {
  background: #0f172a;
}
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
}
.tech-item {
  background: #1e293b;
  padding: 12px 24px;
  border-radius: 50px;
  border: 1px solid #475569;
  font-weight: 500;
}
.tech-note {
  text-align: center;
  color: #94a3b8;
  font-style: italic;
}

/* Demo Section */
.demo {
  background: #1e293b;
  text-align: center;
}
.demo p {
  font-size: 1.2rem;
  margin-bottom: 3rem;
  color: #94a3b8;
}
.demo-preview img {
  width: 100%;
  max-width: 1000px;
  margin: 3rem auto 0;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

/* Footer */
footer {
  background: #020617;
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid #334155;
}
footer a {
  color: #60a5fa;
  text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }
  .hero-content h1 { font-size: 3.5rem; }
  .hero-content h2 { font-size: 1.6rem; }
  .mockup { width: 90%; height: auto; transform: none; }
  .nav-menu { display: none; } /* Add hamburger menu if needed */
}