#app {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #2c3e50;
  min-height: 100vh;
  background-color: #f5f5f5;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
}
/* 全局样式 */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #f5f5f5;
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
  body {
    font-size: 14px;
  }
}

/* 通用按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  outline: none;
}

.btn-primary {
  background-color: #007aff;
  color: white;
}

.btn-primary:hover {
  background-color: #0056cc;
}

.btn-primary:active {
  background-color: #004499;
}

/* Loading 样式 */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #007aff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  margin-top: 16px;
  color: #666;
  font-size: 14px;
}

/* 卡片样式 */
.card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  margin: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 响应式布局 */
.container {
  max-width: 400px;
  margin: 0 auto;
  padding: 20px;
}

@media screen and (max-width: 480px) {
  .container {
    padding: 16px;
  }
  
  .card {
    margin: 8px;
    padding: 20px;
  }
}