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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.header-info {
  display: flex;
  align-items: center;
}

.icon {
  background: rgba(0,0,0,0.2);
  padding: 8px;
  border-radius: 8px;
  margin-right: 10px;
}

.debug-badge {
  background: rgba(255,255,255,0.2);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
}

main {
  flex: 1;
  padding: 40px 0;
}

footer {
  background: white;
  border-top: 1px solid #e0e0e0;
  padding: 20px 0;
  text-align: center;
  color: #666;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #667eea;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  margin: 5px;
  transition: background 0.3s;
}

.btn:hover {
  background: #5a6fd8;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  margin: 20px 0;
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }

  .debug-badge {
    margin-top: 10px;
  }
}