:root {
  --primary-color: #0F4C81;
  --secondary-color: #9B59B6;
  --highlight-color: #34C759;
  --gradient-start: #E0EAFC;
  --gradient-end: #CFDEF3;
  --font-title: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #333;
  line-height: 1.6;
}

header {
  text-align: center;
  padding: 40px 20px;
  background: var(--primary-color);
  color: white;
  font-family: var(--font-title);
}

header h1 {
  font-size: 2.5rem;
  margin: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
}

.card img {
  width: 100%;
  height: auto;
  display: block;
}

.card-content {
  padding: 20px;
}

h2, h3 {
  font-family: var(--font-title);
  color: var(--secondary-color);
}

pre {
  background: #f4f4f4;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
}

code {
  background: #eaeaea;
  padding: 2px 5px;
  border-radius: 3px;
  color: var(--highlight-color);
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  padding: 20px;
}

.grid-item {
  background: var(--gradient-start);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  .grid-container {
    grid-template-columns: 1fr;
  }

  header h1 {
    font-size: 2rem;
  }
}

@keyframes float {
  0% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0); }
}

.star {
  position: absolute;
  width: 10px;
  height: 10px;
  background: white;
  border-radius: 50%;
  animation: float 5s infinite ease-in-out;
}

.progress-ring {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: conic-gradient(var(--highlight-color) 70%, var(--gradient-start) 0);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 20px auto;
}

.progress-text {
  font-size: 16px;
  color: var(--highlight-color);
}

footer {
  text-align: center;
  padding: 20px;
  background: var(--primary-color);
  color: white;
  margin-top: 40px;
}