:root {
  --primary-color: #2b5876;
  --secondary-color: #4e4376;
  --accent-color: #f5d76e;
  --text-color: #f0f0f0;
  --card-bg: rgba(255, 255, 255, 0.1);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', 'Open Sans', sans-serif;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  background-size: 400% 400%;
  animation: gradientAnimation 15s ease infinite;
  color: var(--text-color);
  line-height: 1.6;
}

@keyframes gradientAnimation {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.header {
  text-align: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.notice {
  background: rgba(0,0,0,0.2);
  padding: 1rem;
  border-radius: 8px;
  margin: 2rem auto;
  max-width: 800px;
  text-align: center;
  border: 1px solid var(--accent-color);
  box-shadow: 0 0 20px rgba(245, 215, 110, 0.3);
}

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

article {
  background: rgba(0,0,0,0.2);
  border-radius: 15px;
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  backdrop-filter: blur(10px);
}

h1, h2, h3, h4 {
  color: var(--accent-color);
  margin-top: 2rem;
  position: relative;
}

h2::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color), transparent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.card {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid rgba(255,255,255,0.1);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

.img-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin: 2rem 0;
}

.img-container img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  transition: transform 0.3s;
}

.img-container img:hover {
  transform: scale(1.05);
}

pre {
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  border-left: 3px solid var(--accent-color);
  margin: 1.5rem 0;
}

code {
  font-family: 'Courier New', monospace;
  color: var(--accent-color);
}

.nav-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.nav-links a {
  color: var(--accent-color);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  border: 1px solid var(--accent-color);
  transition: all 0.3s;
}

.nav-links a:hover {
  background: var(--accent-color);
  color: var(--primary-color);
}

.sparkle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  animation: sparkleAnimation 3s infinite;
}

@keyframes sparkleAnimation {
  0%, 100% { opacity: 0; transform: scale(0.5); }
  50% { opacity: 1; transform: scale(1.5); }
}

@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  article {
    padding: 1rem;
  }
  
  .img-container img {
    width: 120px;
    height: 120px;
  }
}