/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Navbar */
.navbar {
  background: #fff;
  padding: 1rem 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #000;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  color: #333;
  font-weight: 600;
  font-size: 1rem;
}

/* Hero */
.hero {
  background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://via.placeholder.com/1200x600') center/cover no-repeat;
  height: 100vh;
  display: flex;
  align-items: center;
  color: white;
  text-align: center;
  margin-top: 70px;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #000;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
}

.btn-outline {
  background: transparent;
  border: 2px solid white;
}

/* Sections */
.section {
  padding: 4rem 0;
}

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

.bg-light {
  background-color: #f9f9f9;
}

/* Collections */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.collection-card {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  text-align: center;
}

.collection-card h3 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

/* Lenses */
.lens-content {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.lens-text {
  flex: 1;
}

.lens-image {
  flex: 1;
  display: flex;
  justify-content: center;
}

.placeholder-image {
  width: 100%;
  height: 300px;
  background: #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #666;
}

/* Footer */
footer {
  background: #000;
  color: white;
  text-align: center;
  padding: 1.5rem 0;
}

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

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .lens-content {
    flex-direction: column;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}