/* 全局样式 */
:root {
  --primary-color: #409eff;
  --secondary-color: #67c23a;
  --background-color: #f5f7fa;
  --text-color: #2c3e50;
  --border-color: #e4e7ed;
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s;
  --sidebar-width: 280px;
  --sidebar-bg: #fff;
  --sidebar-hover-bg: #f5f7fa;
  --sidebar-active-bg: #ecf5ff;
}

body, html { 
  margin: 0; 
  padding: 0; 
  font-family: '微软雅黑', Arial, sans-serif;
  color: var(--text-color);
  background: var(--background-color);
}

/* 布局容器 */
.container { 
  display: flex; 
  height: 100vh;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e7ed 100%);
}

/* 侧边栏样式 */
aside { 
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-speed);
  position: relative;
}

.sidebar-header {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(135deg, var(--primary-color) 0%, #66b1ff 100%);
  color: #fff;
}

.sidebar-header i {
  font-size: 24px;
}

.sidebar-header h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

#metric-list {
  padding: 16px 0;
}

.metric-item {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: all var(--transition-speed);
  position: relative;
  color: var(--text-color);
  text-decoration: none;
}

.metric-item:hover {
  background: var(--sidebar-hover-bg);
  color: var(--primary-color);
  padding-left: 24px;
}

.metric-item.active {
  background: var(--sidebar-active-bg);
  color: var(--primary-color);
  font-weight: 500;
}

.metric-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
  background: var(--primary-color);
  border-radius: 0 2px 2px 0;
}

.metric-item i {
  font-size: 18px;
  transition: transform var(--transition-speed);
}

.metric-item:hover i {
  transform: scale(1.1);
}

.metric-item span {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.predictions-item {
  margin-top: 16px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.predictions-item i {
  color: var(--secondary-color);
}

/* 侧边栏滚动条 */
aside::-webkit-scrollbar {
  width: 6px;
}

aside::-webkit-scrollbar-track {
  background: transparent;
}

aside::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

aside::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* 主内容区域 */
main { 
  flex: 1; 
  padding: 32px;
  overflow-y: auto;
}

/* 头部样式 */
header { 
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  margin-bottom: 24px;
}

#main-title { 
  font-size: 1.8rem; 
  margin: 0;
  color: var(--primary-color);
  font-weight: 600;
}

#metric-tag { 
  margin: 12px 0;
  color: var(--secondary-color);
  font-size: 1.1rem;
}

/* 图表控制区域 */
.chart-controls { 
  margin: 16px 0;
  display: flex;
  gap: 12px;
}

button {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  background: #fff;
  color: var(--text-color);
  cursor: pointer;
  transition: all var(--transition-speed);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

button:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-2px);
}

/* 图表区域 */
#chart {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  margin-bottom: 24px;
}

/* 统计卡片 */
#stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

#stat-cards div {
  background: #fff;
  padding: 16px;
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  text-align: center;
  transition: transform var(--transition-speed);
}

#stat-cards div:hover {
  transform: translateY(-4px);
}

/* 预测图片区域 */
.tabs { 
  margin-bottom: 24px;
  display: flex;
  gap: 12px;
}

.tabs button {
  padding: 10px 20px;
  border-radius: 20px;
}

.tabs button.active { 
  background: var(--primary-color); 
  color: #fff;
}

#predictions-list, #predictions-slideshow { 
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  padding: 16px 0;
}

.prediction-card { 
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  padding: 20px;
  transition: all var(--transition-speed);
}

.prediction-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.prediction-card h3 {
  color: var(--primary-color);
  margin: 0 0 12px 0;
  font-size: 1.2rem;
}

.prediction-card img { 
  width: 100%;
  border-radius: 8px;
  cursor: pointer;
  transition: transform var(--transition-speed);
}

.prediction-card img:hover {
  transform: scale(1.02);
}

/* 全屏模态框 */
.modal { 
  position: fixed;
  z-index: 999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-speed);
}

.modal.show {
  opacity: 1;
  visibility: visible;
}

.modal-content { 
  max-width: 90vw;
  max-height: 80vh;
  border-radius: 8px;
  box-shadow: 0 0 32px rgba(0, 0, 0, 0.3);
}

.close { 
  position: absolute;
  top: 24px;
  right: 40px;
  color: #fff;
  font-size: 40px;
  cursor: pointer;
  transition: transform var(--transition-speed);
}

.close:hover {
  transform: rotate(90deg);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container { 
    flex-direction: column;
  }
  
  aside { 
    width: 100%;
    height: auto;
    max-height: 300px;
  }
  
  main {
    padding: 16px;
  }
  
  #predictions-list, #predictions-slideshow {
    grid-template-columns: 1fr;
  }
}

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

.prediction-card {
  animation: fadeIn 0.5s ease-out;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #66b1ff;
}

/* 分类样式 */
.metric-category {
  margin-bottom: 8px;
}

.category-header {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  color: var(--text-color);
  font-weight: 500;
  transition: all var(--transition-speed);
}

.category-header:hover {
  color: var(--primary-color);
  background: var(--sidebar-hover-bg);
}

.category-header i {
  font-size: 18px;
  transition: transform var(--transition-speed);
}

.category-header:hover i {
  transform: rotate(15deg);
}

.category-items {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow: hidden;
  transition: all var(--transition-speed);
}

.category-items .metric-item {
  padding-left: 48px;
  font-size: 0.95rem;
}

.category-items .metric-item:hover {
  padding-left: 52px;
}

/* 动画效果 */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.category-items {
  animation: slideDown 0.3s ease-out;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .category-header {
    padding: 10px 16px;
  }
  
  .category-items .metric-item {
    padding-left: 40px;
  }
  
  .category-items .metric-item:hover {
    padding-left: 44px;
  }
}

/* 首页欢迎区样式 */
.welcome-section {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px #e4e7ed;
  padding: 48px 0 32px 0;
  margin-bottom: 32px;
  text-align: center;
  animation: fadeIn 0.6s;
}
.welcome-section h2 {
  color: var(--primary-color);
  font-size: 2rem;
  margin-bottom: 32px;
  font-weight: 600;
}
.welcome-img img {
  width: 300px;
  margin-bottom: 24px;
  opacity: 0.9;
}
.welcome-tip {
  color: #888;
  font-size: 1.1rem;
  margin-top: 12px;
}