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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 3rem 2rem;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.1rem;
  opacity: 0.95;
}

nav {
  background: #333;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

nav a {
  color: white;
  padding: 1rem 1.5rem;
  text-decoration: none;
  border-right: 1px solid #555;
  transition: background 0.3s;
}

nav a:last-child {
  border-right: none;
}

nav a:hover,
nav a.active {
  background: #667eea;
}

main {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.container {
  background: white;
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h2 {
  color: #667eea;
  font-size: 2rem;
  margin: 1.5rem 0 1rem;
  border-bottom: 2px solid #667eea;
  padding-bottom: 0.5rem;
}

h3 {
  color: #764ba2;
  font-size: 1.3rem;
  margin: 1.5rem 0 0.5rem;
}

h4 {
  color: #555;
  font-size: 1.1rem;
  margin: 1rem 0 0.5rem;
}

p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

code {
  background: #f4f4f4;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: #d63384;
}

pre {
  background: #2d2d2d;
  color: #f8f8f2;
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1rem 0;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

pre code {
  background: none;
  color: inherit;
  padding: 0;
}

ul, ol {
  margin: 1rem 0 1rem 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature-item {
  background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
  padding: 1.5rem;
  border-radius: 8px;
  border-left: 4px solid #667eea;
}

.feature-item h4 {
  color: #667eea;
  margin-top: 0;
}

.api-section {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #f9f9f9;
  border-left: 4px solid #667eea;
  border-radius: 4px;
}

.api-section h4 {
  color: #667eea;
  margin-top: 0;
}

.parameter {
  display: flex;
  margin: 0.5rem 0;
  font-size: 0.95rem;
}

.parameter-name {
  font-weight: bold;
  color: #764ba2;
  min-width: 120px;
}

.parameter-type {
  color: #666;
  margin: 0 0.5rem;
}

.parameter-desc {
  flex: 1;
}

.code-example {
  background: #f5f5f5;
  padding: 1.5rem;
  border-radius: 5px;
  margin: 1rem 0;
  border-left: 4px solid #667eea;
}

.code-example h5 {
  color: #667eea;
  margin-top: 0;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

th, td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background: #667eea;
  color: white;
}

tr:hover {
  background: #f9f9f9;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: #667eea;
  color: white;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-right: 0.5rem;
}

.badge.optional {
  background: #6c757d;
}

.badge.required {
  background: #dc3545;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #667eea;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.button:hover {
  background: #764ba2;
}

.button.secondary {
  background: #6c757d;
}

.button.secondary:hover {
  background: #5a6268;
}

footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
}

footer a {
  color: #667eea;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  header h1 {
    font-size: 1.8rem;
  }

  nav {
    flex-direction: column;
  }

  nav a {
    border-right: none;
    border-bottom: 1px solid #555;
  }

  nav a:last-child {
    border-bottom: none;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 1.5rem;
  }
}