.App {
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.App-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.App-header h1 {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  font-size: 2.5rem;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}

/* 按钮悬停效果 */
button {
  transition: all 0.3s ease !important;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

button:active {
  transform: translateY(0);
}

/* 卡片阴影效果 */
div[style*="border"] {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s ease;
}

div[style*="border"]:hover {
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

/* 输入框样式 */
input[type="text"] {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input[type="text"]:focus {
  outline: none;
  border-color: #667eea !important;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .App-header h1 {
    font-size: 2rem;
  }
  
  .App-header p {
    font-size: 14px;
  }
  
  nav {
    flex-direction: column !important;
    align-items: center !important;
  }
  
  nav button {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .App-header {
    padding: 15px !important;
  }
  
  main {
    padding: 0 15px 30px 15px !important;
  }
  
  .App-header h1 {
    font-size: 1.8rem;
  }
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main > div {
  animation: fadeIn 0.5s ease-out;
}

/* 代码块样式 */
code {
  background-color: #f4f4f4;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  color: #e83e8c;
}

/* 高亮文本 */
strong {
  color: #495057;
  font-weight: 600;
}

/* 链接样式 */
a {
  color: #667eea;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #764ba2;
  text-decoration: underline;
}