body {
    font-family: Tahoma, sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f5;
}

.header {
    background: #333;
    color: white;
    padding: 20px;
    border-bottom: 3px solid #42a5f5;
}

.header h1 {
    margin: 0 0 5px 0;
}

.header p {
    margin: 0;
    color: #ccc;
}

.benchmark-selector {
    background: #f0f0f0;
    padding: 15px 20px;
    border-bottom: 2px solid #333;
    display: flex;
    gap: 15px;
    align-items: center;
}

.benchmark-selector label {
    font-weight: bold;
    font-size: 14px;
}

.benchmark-selector select {
    padding: 8px 12px;
    border: 2px solid #42a5f5;
    border-radius: 4px;
    background: white;
    color: #333;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    min-width: 200px;
}

#benchmark-content {
    padding: 20px;
}

.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.welcome-message h2 {
    color: #333;
}

.load-button {
    padding: 8px 20px;
    background: #66bb6a;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 14px;
    margin-bottom: 20px;
}

.load-button:hover {
    background: #43a047;
}

.error-message {
    color: #d32f2f;
    padding: 20px;
    background: #ffebee;
    border: 2px solid #ef5350;
    border-radius: 8px;
    margin: 20px;
    max-width: 800px;
}

.error-message h3 {
    margin-top: 0;
    color: #c62828;
}

.error-message pre {
    background: #f5f5f5;
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
    color: #333;
    font-family: monospace;
    font-size: 13px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.stat-item {
    padding: 12px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-align: center;
}

.stat-label {
    font-weight: bold;
    color: #666;
    font-size: 12px;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 24px;
    color: #333;
    font-weight: bold;
}

.qa-results {
    margin-top: 20px;
}

.qa-item {
    margin-bottom: 15px;
    border-radius: 8px;
}