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

.controls {
    margin-bottom: 20px;
}

.controls label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: #34495e;
}

.controls select {
    width: 100%;
    max-width: 500px;
    padding: 12px;
    border: 2px solid #e1e8ed;
    border-radius: 6px;
    font-size: 16px;
    background: white;
    cursor: pointer;
    transition: border-color 0.2s;
}

.controls select:hover {
    border-color: #3498db;
}

.controls select:focus {
    outline: none;
    border-color: #2980b9;
}

.comment-section {
    background: #fff9e6;
    border-left: 4px solid #f39c12;
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 14px;
    color: #2c3e50;
    display: none;
}

.comment-section.active {
    display: block;
}

.comparison-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 15px;
}

.algorithm-section {
    background: white;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #e1e8ed;
}

.algorithm-title {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
    padding-bottom: 12px;
    border-bottom: 2px solid #e1e8ed;
    color: #2c3e50;
}

.table-container {
    overflow-x: auto;
    margin-bottom: 15px;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 4px;
}

th, td {
    padding: 8px 10px;
    text-align: center;
    font-size: 12px;
}

th {
    background: #34495e;
    color: white !important;
    font-weight: 600;
    border-radius: 4px;
}

th.corner {
    background: #2c3e50;
    font-size: 11px;
    font-style: italic;
    color: rgba(255,255,255,0.9) !important;
}

th.header-cell {
    font-size: 12px;
    width: 80px;
    max-width: 80px;
    color: white !important;
}

td.row-header {
    background: #34495e;
    color: white !important;
    font-weight: 600;
    text-align: left;
    padding-left: 8px;
    padding-right: 8px;
    border-radius: 4px;
    width: 80px;
    max-width: 80px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 11px;
}

td.data-cell {
    background: white;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    transition: transform 0.2s;
    position: relative;
    width: 80px;
    max-width: 80px;
}

td.data-cell:hover {
    transform: scale(1.05);
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

td.margin-cell {
    background: #ecf0f1;
    font-weight: 600;
    font-size: 13px;
    border-radius: 4px;
    width: 80px;
    max-width: 80px;
}

.quota-info {
    display: block;
    font-size: 10px;
    color: #95a5a6;
    margin-top: 2px;
    font-weight: normal;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 12px;
    background: white;
    border-radius: 6px;
    border: 1px solid #e1e8ed;
}

.stat-item {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 6px;
    text-align: center;
}

.stat-label {
    font-size: 11px;
    color: #7f8c8d;
    margin-bottom: 6px;
    line-height: 1.3;
}

.stat-value {
    font-size: 20px;
    font-weight: 700;
    color: #2c3e50;
}

.stat-item.gini .stat-value {
    color: #3498db;
}

.stat-item.empty .stat-value {
    color: #e74c3c;
}

.stat-item.sparse .stat-value {
    color: #f39c12;
}

.stat-note {
    grid-column: 1 / -1;
    padding: 10px;
    background: #f8f9fa;
    border-left: 3px solid #bdc3c7;
    border-radius: 4px;
    font-size: 12px;
    color: #5a6c7d;
    line-height: 1.4;
}

@media (max-width: 1200px) {
    .comparison-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .algorithm-section {
        padding: 15px;
    }
    
    .algorithm-title {
        font-size: 1.1em;
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    th, td {
        padding: 6px 8px;
        font-size: 11px;
    }
    
    th.header-cell,
    td.row-header {
        width: 60px;
        max-width: 60px;
        font-size: 10px;
    }
    
    td.data-cell {
        width: 60px;
        max-width: 60px;
        font-size: 13px;
    }
    
    td.margin-cell {
        width: 60px;
        max-width: 60px;
        font-size: 12px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 10px;
    }
    
    .stat-label {
        font-size: 12px;
    }
    
    .stat-value {
        font-size: 18px;
    }
    
    .controls select {
        font-size: 14px;
        padding: 10px;
    }
    
    .comparison-wrapper {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    th, td {
        padding: 5px 6px;
        font-size: 10px;
    }
    
    th.header-cell,
    td.row-header {
        width: 50px;
        max-width: 50px;
        font-size: 9px;
    }
    
    td.data-cell {
        width: 50px;
        max-width: 50px;
        font-size: 12px;
    }
    
    td.margin-cell {
        width: 50px;
        max-width: 50px;
        font-size: 11px;
    }
    
    .stat-value {
        font-size: 16px;
    }
}