:root {
    --primary: #5c6ac4;
    --secondary: #47c1bf;
    --success: #50b83c;
    --danger: #de3618;
    --dark: #212b36;
    --gray: #637381;
    --light-gray: #dfe3e8;
    --lighter-gray: #f4f6f8;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--lighter-gray);
    color: var(--dark);
}

.dashboard {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 240px;
    background-color: var(--white);
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--primary);
}

.sidebar nav ul {
    list-style: none;
}

.sidebar nav ul li {
    padding: 12px 10px;
    margin-bottom: 5px;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar nav ul li:hover {
    background-color: var(--lighter-gray);
}

.sidebar nav ul li.active {
    background-color: rgba(92, 106, 196, 0.1);
    color: var(--primary);
}

.main-content {
    flex: 1;
    padding: 30px;
}

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

header h1 {
    font-size: 24px;
}

header select {
    padding: 8px 12px;
    border-radius: 5px;
    border: 1px solid var(--light-gray);
    background-color: var(--white);
}

.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.metric-value {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 5px;
}

.metric-label {
    color: var(--gray);
    margin-bottom: 10px;
}

.metric-trend {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.metric-trend.positive {
    color: var(--success);
}

.metric-trend.negative {
    color: var(--danger);
}

.charts {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.chart-container {
    background-color: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.chart-container h2 {
    font-size: 18px;
    margin-bottom: 20px;
}

.table-container {
    background-color: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.table-container h2 {
    font-size: 18px;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
}

th {
    color: var(--gray);
    font-weight: 500;
}

@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .charts {
        grid-template-columns: 1fr;
    }
}