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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
}

.containerr {
  margin: 0 auto;
}

/* Hero Section */
.hero {
  background-image: url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?auto=format&fit=crop&w=2850&q=80');
  background-size: cover;
  background-position: center;
  height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn-primary {
  background-color: #fff;
  color: #333;
}

.btn-primary:hover {
  background-color: #f0f0f0;
}

.btn-secondary {
  background-color: #333;
  color: #fff;
}

.btn-secondary:hover {
  background-color: #444;
}

/* Stats Section */
.stats {
  background-color: #fff;
  padding: 4rem 0;
  text-align: center;
}

.stats h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.stat-card {
  background-color: #f9f9f9;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
}

.stat-card .icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.stat-card h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.stat-card p {
  color: #666;
}

/* Contributors Section */
.contributors {
  padding: 4rem 0;
  text-align: center;
}

.contributors h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.contributors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.contributor-card {
  background-color: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contributor-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.contributor-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 1.5rem auto;
  display: block;
  border: 4px solid #f0f0f0;
}

.contributor-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.contributor-card p {
  color: #666;
  margin-bottom: 1rem;
}

.contributor-card .contributions {
  background-color: #f0f0f0;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 1rem;
}

.contributor-card .footer {
  background-color: #f9f9f9;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.contributor-card .footer a {
  color: #333;
  text-decoration: none;
  display: flex;
  align-items: center;
}

.contributor-card .footer svg {
  margin-right: 0.5rem;
}

/* Loading Spinner */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #333;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Call to Action Section */
.cta {
  background-color: #333;
  color: #fff;
  padding: 4rem 0;
  text-align: center;
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.cta p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.cta form {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.cta input[type="email"] {
  padding: 0.8rem;
  font-size: 1rem;
  border: none;
  border-radius: 5px;
  width: 300px;
}

.notification {
  background-color: #4CAF50;
  color: white;
  padding: 1rem;
  border-radius: 5px;
  margin-top: 1rem;
}

.hidden {
  display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero h1 {
      font-size: 2.5rem;
  }

  .hero p {
      font-size: 1.2rem;
  }

  .cta form {
      flex-direction: column;
      align-items: center;
  }

  .cta input[type="email"] {
      width: 100%;
      max-width: 300px;
  }
}