:root {
  --primary-color: #007bff;
  --secondary-color: #28a745;
  --background-color: #f8f9fa;
  --text-color: #333;
  --light-bg: #fff;
  --border-color: #dee2e6;
  --spacing: 1rem;
  --border-radius: 0.375rem;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  margin: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing);
}

header {
  background-color: var(--light-bg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
}

nav li {
  margin: 0 var(--spacing);
}

nav a {
  text-decoration: none;
  color: var(--text-color);
  padding: var(--spacing);
  display: block;
  transition: background-color 0.3s;
}

nav a:hover,
nav a:focus {
  background-color: var(--background-color);
  outline: 2px solid var(--primary-color);
  outline-offset: -2px;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem var(--spacing);
}

h1, h2, h3, h4 {
  margin-top: 0;
  line-height: 1.2;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--primary-color);
  transition: color 0.3s;
}

a:hover,
a:focus {
  color: var(--secondary-color);
  text-decoration: underline;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 500;
  text-align: center;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background-color: #0056b3;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover,
.btn-outline:focus {
  background-color: var(--primary-color);
  color: var(--light-bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

.hero {
  text-align: center;
  padding: 2rem 0;
}

.hero img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing);
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing);
}

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

.featured-ngos h2,
.featured-media h2 {
  text-align: center;
  margin-bottom: var(--spacing);
}

.ngo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing);
  margin-bottom: 2rem;
}

.card {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.card h3 {
  margin-top: 0;
  color: var(--primary-color);
}

.ngo-card {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing);
  margin-bottom: var(--spacing);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.ngo-card h2 {
  color: var(--primary-color);
}

.ngo-card ul {
  list-style: none;
  padding: 0;
  margin: var(--spacing) 0;
}

.ngo-card li {
  margin-bottom: 0.5rem;
}

/* responsive media */
img,
video {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

video {
  outline: none;
}


.watch-link {
  color: var(--secondary-color);
  font-weight: 500;
}

.watch-link:hover,
.watch-link:focus {
  text-decoration: underline;
}

.cta {
  text-align: center;
  padding: 2rem 0;
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  margin-top: 2rem;
}

footer {
  text-align: center;
  padding: var(--spacing);
  background-color: var(--light-bg);
  border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
  }

  nav li {
    margin: 0;
  }

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

  .hero p {
    font-size: 1.1rem;
  }

  .ngo-cards {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
    margin-bottom: 0.5rem;
  }
}