/* 全局样式 */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 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;
}

#root {
  height: 100%;
}

.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-content {
  flex: 1;
  overflow-y: auto;
  height: 100%;
}

/* 加载状态样式 */
.app-loading {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f5f5f5;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #e5e5e5;
  border-top: 4px solid #000;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

.loading-text {
  color: #666;
  font-size: 14px;
  margin-top: 1rem;
}

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