/* Main styles */
:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --background-color: #f8f9fa;
  --text-color: #333;
  --border-color: #dee2e6;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  background-color: var(--background-color);
  color: var(--text-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  gap: 1px;
  background-color: var(--border-color);
  border-radius: 8px 8px 0 0;
  overflow: hidden;
}

.tab {
  padding: 12px 24px;
  background-color: #fff;
  border: none;
  cursor: pointer;
  flex: 1;
  font-size: 1rem;
  transition: background-color 0.2s;
}

.tab:hover {
  background-color: #f0f0f0;
}

.tab.active {
  background-color: var(--secondary-color);
  color: white;
}

/* Feed Container */
.feed-container {
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: 0 0 8px 8px;
  padding: 20px;
  min-height: 400px;
}

/* Feed Items */
.feed-item {
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s;
}

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

.feed-item:hover {
  background-color: var(--background-color);
}

.feed-item h2 {
  margin: 0 0 8px 0;
  color: var(--primary-color);
}

.feed-item .meta {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 8px;
}

.feed-item .content {
  margin-top: 8px;
}

/* Loading State */
.loading {
  text-align: center;
  padding: 40px;
  color: #666;
}

/* Error State */
.error {
  color: #dc3545;
  padding: 20px;
  text-align: center;
  background-color: #f8d7da;
  border-radius: 4px;
  margin: 20px 0;
}