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

:root {
    --primary: #1a73e8;
    --b2c-color: #4285f4;
    --b2b-color: #34a853;
    --total-color: #ea4335;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --border: #dadce0;
    --shadow: 0 1px 3px rgba(60,64,67,0.15), 0 1px 2px rgba(60,64,67,0.1);
    --shadow-hover: 0 4px 12px rgba(60,64,67,0.2);
    --positive: #34a853;
    --negative: #ea4335;
    --neutral: #5f6368;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 14px;
}

.dashboard {
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
}

.header {
    margin-bottom: 24px;
}

.header h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.filters {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--card-bg);
    padding: 16px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-group label {
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-group select,
.service-filters select {
    padding: 8px 32px 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: white;
    font-size: 13px;
    cursor: pointer;
    min-width: 140px;
}

.btn-reset {
    margin-left: auto;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-reset:hover {
    background: var(--bg);
    color: var(--text-primary);
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--card-bg);
    padding: 18px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s;
}

.kpi-card:hover {
    box-shadow: var(--shadow-hover);
}

.kpi-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    font-weight: 500;
}

.kpi-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.kpi-value.positive { color: var(--positive); }
.kpi-value.negative { color: var(--negative); }

.chart-section,
.services-section,
.conclusions {
    background: var(--card-bg);
    padding: 24px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.chart-header h2,
.services-section h2,
.conclusions h2 {
    font-size: 18px;
    font-weight: 600;
}

.toggle-group {
    display: flex;
    gap: 4px;
    background: var(--bg);
    padding: 4px;
    border-radius: 8px;
}

.toggle-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.toggle-btn.active {
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

.chart-container {
    position: relative;
    height: 380px;
}

.service-chart {
    height: 320px;
    margin-top: 20px;
}

.table-container {
    overflow-x: auto;
    margin-top: 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    background: var(--bg);
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tr:hover td {
    background: #fafbfc;
}

.service-name {
    font-weight: 500;
    cursor: pointer;
    color: var(--primary);
}

.service-name:hover {
    text-decoration: underline;
}

.cell-positive {
    color: var(--positive);
    font-weight: 500;
}

.cell-negative {
    color: var(--negative);
    font-weight: 500;
}

.cell-neutral {
    color: var(--neutral);
}

.conclusions-list {
    display: grid;
    gap: 12px;
}

.conclusion-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.conclusion-bullet {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    margin-top: 7px;
    flex-shrink: 0;
}

.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 12px;
}

.service-filters {
    margin-bottom: 16px;
}

@media (max-width: 1200px) {
    .kpi-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 900px) {
    .dashboard {
        padding: 16px;
    }
    
    .header h1 {
        font-size: 22px;
    }
    
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .chart-container {
        height: 300px;
    }
}