:root {
    --primary-color: #00ff9d;
    --background-color: #1a1a1a;
    --card-background: #2d2d2d;
    --text-color: #ffffff;
    --text-secondary: #b3b3b3;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2rem;
    color: var(--primary-color);
}

.primary-button {
    background-color: var(--primary-color);
    color: var(--background-color);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
}

.primary-button:hover {
    transform: scale(1.05);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.2s;
}

.metric-card:hover {
    transform: translateY(-5px);
}

.metric-card.primary {
    background-color: var(--primary-color);
    color: var(--background-color);
}

.metric-card h2 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
}

.primary .metric-card h2 {
    color: var(--background-color);
}

.metric-value {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.metric-unit {
    font-size: 1rem;
    color: var(--text-secondary);
}

.primary .metric-unit {
    color: var(--background-color);
}

.graph-container {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    height: 300px;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .metric-value {
        font-size: 2rem;
    }
}