.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.app h1 {
  color: #333;
  border-bottom: 2px solid #4CAF50;
  padding-bottom: 10px;
}

.app nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 20px;
  margin: 20px 0;
  border-bottom: 1px solid #ddd;
  padding-bottom: 10px;
}

.app nav ul li {
  margin: 0;
}

.app nav a {
  text-decoration: none;
  color: #666;
  padding: 8px 16px;
  border-radius: 4px;
  transition: all 0.3s;
}

.app nav a:hover {
  background-color: #f5f5f5;
  color: #333;
}

.app nav a.active {
  background-color: #4CAF50;
  color: white;
}

.page {
  padding: 20px;
  background: #f9f9f9;
  border-radius: 8px;
  margin: 20px 0;
}

.page h2 {
  color: #333;
  margin-top: 0;
}

.features ul {
  line-height: 1.8;
}

.dev-notice {
  background: #e3f2fd;
  border-left: 4px solid #2196F3;
  padding: 15px;
  margin-top: 20px;
  border-radius: 4px;
}

.dev-notice strong {
  color: #1976D2;
  display: block;
  margin-bottom: 8px;
}

/* 开发工具样式 */
.dev-tools {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

.dev-tools-toggle {
  background: #4CAF50;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.dev-tools-toggle:hover {
  background: #45a049;
}

.dev-tools-panel {
  position: absolute;
  bottom: 50px;
  right: 0;
  width: 400px;
  max-height: 500px;
  overflow-y: auto;
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  padding: 20px;
}

.dev-tools-panel h3 {
  margin-top: 0;
  color: #4CAF50;
}

.dev-info {
  font-size: 13px;
}

.dev-info-item {
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid #eee;
}

.dev-info-item:last-child {
  border-bottom: none;
}

.dev-info-item strong {
  display: block;
  margin-bottom: 5px;
  color: #666;
}

.dev-info-item code {
  display: block;
  background: #f5f5f5;
  padding: 8px;
  border-radius: 4px;
  word-break: break-all;
  font-size: 12px;
  margin-top: 5px;
}

.dev-info-item ul {
  margin: 5px 0 0 0;
  padding-left: 20px;
}

.dev-info-item ul li {
  margin: 5px 0;
  font-size: 12px;
}

/* 仪表盘样式 */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.stat-card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  text-align: center;
}

.stat-card h3 {
  margin: 0 0 10px 0;
  color: #666;
  font-size: 14px;
  font-weight: normal;
}

.stat-value {
  font-size: 32px;
  font-weight: bold;
  color: #4CAF50;
  margin: 0;
}

/* 子导航 */
.sub-nav {
  margin: 20px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid #ddd;
}

.sub-nav a {
  margin-right: 20px;
  text-decoration: none;
  color: #666;
  padding: 8px 16px;
  border-radius: 4px;
}

.sub-nav a:hover {
  background-color: #f5f5f5;
}

.sub-nav a.active {
  background-color: #4CAF50;
  color: white;
}

/* 表单样式 */
form {
  max-width: 500px;
}

form div {
  margin-bottom: 15px;
}

form label {
  display: block;
  margin-bottom: 5px;
  color: #333;
  font-weight: 500;
}

form input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  box-sizing: border-box;
}

form button {
  background: #4CAF50;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}

form button:hover {
  background: #45a049;
}

/* React 18 信息样式 */
.react18-info {
  background: #e8f5e9;
  border-left: 4px solid #4CAF50;
  padding: 20px;
  margin: 20px 0;
  border-radius: 4px;
}

.react18-info h3 {
  margin-top: 0;
  color: #2e7d32;
}

.react18-info ul {
  line-height: 1.8;
}

.react18-info ul li {
  margin: 10px 0;
}

.react18-info small {
  display: block;
  color: #666;
  font-size: 12px;
  margin-top: 5px;
}

.dev-warning {
  background: #fff3cd;
  border-left: 4px solid #ffc107;
  padding: 15px;
  margin-top: 15px;
  border-radius: 4px;
}

.dev-warning strong {
  color: #856404;
  display: block;
  margin-bottom: 8px;
}

.dev-warning p {
  margin: 5px 0;
  color: #856404;
  font-size: 14px;
}

/* 调试信息 */
.debug-info {
  margin-top: 20px;
}

.debug-info h3 {
  color: #666;
  font-size: 14px;
  margin: 15px 0 5px 0;
}

.debug-info pre {
  background: #f5f5f5;
  padding: 15px;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.5;
}