/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  background-color: #f5f5f5;
  color: #333;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

#app {
  max-width: 750px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
}

/* 头部导航 */
.nav-header {
  background-color: #ffffff;
  padding: 16px 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-header h1 {
  font-size: 20px;
  font-weight: 600;
  color: #333;
  text-align: center;
}

/* 主内容区 */
#content {
  flex: 1;
  padding: 16px;
  padding-bottom: 80px;
  overflow-y: auto;
}

/* 卡片样式 */
.card {
  background: #ffffff;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s;
}

.card:active {
  transform: scale(0.98);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #333;
}

.card-content {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  text-align: center;
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
  color: white;
}

.btn-primary:active {
  transform: scale(0.98);
  box-shadow: 0 2px 8px rgba(76, 175, 80, 0.4);
}

.btn-secondary {
  background: #f5f5f5;
  color: #333;
}

.btn-danger {
  background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
  color: white;
}

/* 底部标签栏 */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-width: 750px;
  margin: 0 auto;
  background-color: #ffffff;
  border-top: 1px solid #e0e0e0;
  display: flex;
  justify-content: space-around;
  padding: 8px 0;
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 100;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.3s;
}

.tab-icon {
  font-size: 24px;
  margin-bottom: 4px;
}

.tab-item span {
  font-size: 11px;
  color: #8b8b9a;
}

.tab-item.active span {
  color: #4CAF50;
  font-weight: 600;
}

/* 加载状态 */
.loading {
  text-align: center;
  padding: 40px;
  color: #999;
  font-size: 14px;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #999;
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

/* 表单样式 */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 14px;
  color: #666;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  font-size: 15px;
  transition: border-color 0.3s;
}

.form-input:focus {
  outline: none;
  border-color: #4CAF50;
}

/* 列表样式 */
.list-item {
  display: flex;
  align-items: center;
  padding: 12px;
  border-bottom: 1px solid #f0f0f0;
  cursor: pointer;
  transition: background-color 0.2s;
}

.list-item:active {
  background-color: #f5f5f5;
}

.list-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  margin-right: 12px;
}

.list-item-content {
  flex: 1;
}

.list-item-title {
  font-size: 15px;
  font-weight: 500;
  color: #333;
  margin-bottom: 4px;
}

.list-item-desc {
  font-size: 13px;
  color: #999;
}

/* 状态标签 */
.status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.status-online {
  background-color: #e8f5e9;
  color: #4CAF50;
}

.status-offline {
  background-color: #ffebee;
  color: #f44336;
}

/* 网格布局 */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.grid-item {
  background: #f8f8f8;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.grid-item:active {
  transform: scale(0.95);
  background: #f0f0f0;
}

.grid-item-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.grid-item-text {
  font-size: 13px;
  color: #666;
}

/* 响应式 */
@media (max-width: 480px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 安装提示样式 */
.install-prompt {
  position: fixed;
  bottom: 80px;
  left: 16px;
  right: 16px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  padding: 20px;
  z-index: 999;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.install-content p {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #333;
}

.install-buttons {
  display: flex;
  gap: 12px;
}

.install-buttons .btn {
  flex: 1;
}