:root {
    --primary-color: #e0e0e0;
    --border-color: #444;
    --hover-color: #2a2a2a;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1a1a1a;
    padding: 20px;
    margin: 0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background-color: #262626;
    padding: 50px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

h1 {
    color: var(--primary-color);
    margin: 0;
    flex: 1;
    text-align: center;
}

.stats-container {
    display: flex;
    gap: 20px;
    align-items: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 20px;
    background-color: #1e3a5f;
    border-radius: 6px;
    border: 1px solid #2a5a8f;
}

.stat-label {
    font-size: 12px;
    color: #a0a0a0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
    font-weight: 600;
}

.stat-value {
    font-size: 24px;
    font-weight: bold;
    color: #007bff;
}

#checkboxContainer {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    max-height: 70vh;
    overflow-y: auto;
    gap: 25px;
    align-items: center;
}

.checkbox {
    width: 40px;
    height: 40px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-color: #2a2a2a;
    border: 2px solid #555;
    border-radius: 4px;
    transition: all 0.2s ease;
    accent-color: #0099ff;
}

.checkbox:hover {
    border-color: #0099ff;
    background-color: #333;
}

.checkbox:checked {
    background-color: #0099ff;
    border-color: #0099ff;
    box-shadow: inset 0 0 0 3px #0099ff;
}