:root {
  --primary-color: #1a237e;
  --secondary-color: #673ab7;
  --accent-color: #ff9800;
  --text-color: #ffffff;
  --background-gradient: linear-gradient(135deg, #1a237e, #673ab7);
}

body {
  font-family: 'Roboto', sans-serif;
  background: var(--background-gradient);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

header {
  text-align: center;
  padding: 40px 20px;
  background: rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: -webkit-linear-gradient(#ff9800, #ff5722);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.container {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  grid-column: span 4;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease-in-out;
}

.card:hover {
  transform: translateY(-5px);
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

pre {
  background: rgba(0, 0, 0, 0.2);
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
}

code {
  color: #ff9800;
  font-family: 'Courier New', Courier, monospace;
}

@media (max-width: 768px) {
  .card {
    grid-column: span 6;
  }
}

@media (max-width: 480px) {
  .card {
    grid-column: span 12;
  }
}

button {
  background: var(--accent-color);
  color: var(--text-color);
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: transform 0.3s ease-in-out;
}

button:hover {
  transform: scale(1.1);
}

.particle {
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  animation: particles 2s infinite;
}

@keyframes particles {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1); opacity: 0; }
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

th, td {
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 10px;
  text-align: left;
}

th {
  background: rgba(255, 255, 255, 0.1);
}