body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
    color: #333;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    color: #0056b3;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.panel {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    text-align: center;
}

.panel h2 {
    color: #007bff;
    margin-top: 0;
    margin-bottom: 15px;
}

.panel p {
    font-size: 1.1em;
    margin-bottom: 5px;
}

.panel span {
    font-weight: bold;
    font-size: 1.3em;
    color: #28a745; /* Green for positive, can change dynamically */
}

/* Specific panel colors (optional) */
#gold-panel { border-bottom: 5px solid #FFD700; } /* Gold */
#oil-panel { border-bottom: 5px solid #8B4513; } /* Saddle Brown */
#btc-panel { border-bottom: 5px solid #FFA500; } /* Orange */
#sp500-panel { border-bottom: 5px solid #008000; } /* Green */

/* Loading state styles (optional) */
.panel p span.loading {
    color: #6c757d;
}