:root {
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --text-color: #ffffff;
    --text-secondary: #b3b3b3;
    --primary-color: #4CAF50;
    --border-color: #404040;
    --metric-bg: #363636;
}

body.dark-theme {
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --text-color: #ffffff;
    --text-secondary: #b3b3b3;
    --primary-color: #4CAF50;
    --border-color: #404040;
    --metric-bg: #363636;
}

.dashboard {
    max-width: 1200px;
    margin: 1rem auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0,0,0,0.3);
}

.card h2 {
    color: var(--text-color);
    margin-top: 0;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.75rem;
    font-size: 1.2rem;
    text-align: center;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.metric {
    background: var(--metric-bg);
    border-radius: 6px;
    padding: 0.75rem;
    text-align: center;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
}

.metric-value {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.pv-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.pv-main {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.pv-details {
    font-size: 0.4rem;
    color: var(--text-secondary);
    text-align: left;
    line-height: 1.1;
}

.pv-detail {
    display: block;
}

.chart-container {
    margin: 1rem 0;
    height: 160px;
    position: relative;
}

.chart-container.bar-chart {
    height: 200px;
    margin-top: 1.5rem;
}

.timestamp {
    text-align: right;
    color: var(--text-secondary);
    font-size: 0.7rem;
    margin-top: 1rem;
    padding: 0.25rem;
}

.error {
    color: #ff6b6b;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    text-align: center;
    margin: 0.75rem;
}

.distribution {
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--metric-bg);
    border-radius: 6px;
}

.distribution-item {
    display: flex;
    justify-content: space-between;
    margin: 0.25rem 0;
    font-size: 0.85rem;
}

.distribution-label {
    color: var(--text-secondary);
}

.distribution-value {
    font-weight: bold;
    color: var(--text-color);
}

.loading {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-secondary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .dashboard {
        margin: 0.5rem auto;
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .card {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .metrics-grid {
        gap: 0.5rem;
    }
    
    .metric {
        padding: 0.5rem;
    }
    
    .metric-value {
        font-size: 1.1rem;
    }
    
    .pv-main {
        font-size: 1.1rem;
    }
    
    .pv-details {
        font-size: 0.35rem;
    }
    
    .chart-container {
        height: 140px;
    }
    
    .chart-container.bar-chart {
        height: 180px;
    }
    
    .distribution-item {
        font-size: 0.8rem;
    }
    
    .card h2 {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .card h2 {
        font-size: 1rem;
    }
    
    .metrics-grid {
        gap: 0.4rem;
    }
    
    .metric {
        padding: 0.4rem;
    }
    
    .metric-value {
        font-size: 1rem;
    }
    
    .pv-main {
        font-size: 1rem;
    }
    
    .pv-details {
        font-size: 0.3rem;
    }
    
    .chart-container {
        height: 120px;
    }
    
    .chart-container.bar-chart {
        height: 160px;
    }
    
    .distribution-item {
        font-size: 0.75rem;
    }
    
    .error {
        padding: 0.75rem;
        margin: 0.5rem;
    }
    
    .loading {
        padding: 1rem;
    }
}

/* Touch optimizations */
@media (hover: none) and (pointer: coarse) {
    .card:hover {
        transform: none;
    }
}