body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f7fb;
  color: #1f2937;
}

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

.sidebar {
  width: 220px;
  background: #111827;
  color: #fff;
  padding: 20px;
}

.symbol-btn {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 10px;
  border: 0;
  border-radius: 8px;
  background: #1f2937;
  color: #fff;
  cursor: pointer;
}

.main {
  flex: 1;
  padding: 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.chart-wrap, .news-wrap {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

#chart {
  width: 100%;
  height: 420px;
}

.news-item {
  padding: 10px 0;
  border-bottom: 1px solid #e5e7eb;
}

.meta {
  color: #6b7280;
  font-size: 13px;
  margin-top: 4px;
}