/* 通用样式 */
body, html {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", sans-serif;
  background-color: #121212; /* 全局背景暗色 */
  color: #e0e0e0; /* 默认字体浅色 */
}

.container {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
  width: 220px;
  background-color: #1e1e1e; /* 深灰色暗黑侧边栏 */
  color: #e0e0e0;
  padding: 20px;
  box-sizing: border-box;
  border-right: 1px solid #333; /* 边界分隔 */
}

.sidebar h1 {
  margin-top: 0;
  font-size: 24px;
  color: #ffffff;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  margin-top: 20px;
}

.sidebar nav button {
  background: none;
  border: none;
  color: #b0b0b0;
  padding: 10px 0;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
}

.sidebar nav button:hover {
  color: #ffffff;
}

.sidebar nav button.active {
  font-weight: bold;
  color: #4fc3f7; /* 强调色，蓝色 */
}

/* 内容区 */
#content {
  flex: 1;
  padding: 20px;
  box-sizing: border-box;
  background-color: #181818; /* 深色内容背景 */
  color: #e0e0e0;
}

/* 响应式：手机端 */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    display: flex;
    flex-direction: row;
    overflow-x: auto;
    padding: 10px;
  }

  .sidebar h1 {
    font-size: 22px;
    margin-right: 12px;
  }

  .sidebar nav {
    flex-direction: row;
    gap: 12px;
    margin-top: 0;
  }

  .sidebar nav button {
    padding: 12px 16px;
    font-size: 16px;    /* 字体加大 */
    white-space: nowrap;
  }
}

/* 滚动条美化（可选） */
.sidebar::-webkit-scrollbar {
  height: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
  background-color: #555;
  border-radius: 3px;
}

.stock-page {
  padding: 10px;
}

.refresh-btn {
  background-color: #4fc3f7;
  color: #121212;
  border: none;
  padding: 8px 16px;
  border-radius: 5px;
  cursor: pointer;
  margin-bottom: 10px;
}

.stock-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
}

.stock-card {
  background-color: #1e1e1e;
  padding: 10px;
  border-radius: 8px;
  color: #e0e0e0;
}

.stock-card h3 {
  margin: 0 0 5px 0;
}

.stock-card .price {
  font-size: 18px;
  margin: 0 0 10px 0;
}

.kline {
  height: 150px;
  width: 100%;
}