:root {
    --primary-blue: #004E89;
    --primary-blue-dark: #003a6b;
    --secondary-blue: #00B4D8;
    --neutral-lightest: #f8f9fa;
    --neutral-light: #F4F4F4;
    --neutral-medium: #dee2e6;
    --text-dark: #333333;
    --text-light: #555555;
    --white: #FFFFFF;
    --success-green: #22c55e;
    --error-red: #ef4444;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background-color: var(--neutral-lightest);
    font-family: 'Lato', sans-serif;
    color: var(--text-dark);
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header h1 {
    color: var(--primary-blue);
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
}

.tabs-container {
    border-bottom: 2px solid var(--neutral-medium);
    margin-bottom: 2rem;
    display: flex;
}

.tab-link {
    padding: 1rem 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-light);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: color 0.3s ease, border-color 0.3s ease;
    -webkit-appearance: none;
    appearance: none;
    white-space: nowrap;
}

.tab-link:hover, .tab-link:focus {
    color: var(--primary-blue);
    outline: none;
}

.tab-link.active {
    color: var(--primary-blue);
    font-weight: 700;
    border-bottom-color: var(--primary-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

.section-title {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--neutral-medium);
    padding-bottom: 0.5rem;
}

.kpi-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.kpi-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    border-top: 5px solid var(--primary-blue);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.kpi-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.kpi-icon {
    background-color: #e6f0f7;
    color: var(--primary-blue);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kpi-icon i {
    width: 24px;
    height: 24px;
}

.kpi-content {
    display: flex;
    flex-direction: column;
}

.kpi-title {
    font-size: 1rem;
    color: var(--text-light);
}

.kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
}

.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1rem;
}

.chart-container {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    height: 400px;
}

.chart-container.full-width {
    grid-column: 1 / -1;
}

.chart-container h4 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 700;
    color: var(--text-dark);
}

#rdAllocationChart {
    max-height: 300px;
    margin: 0 auto;
}

.data-table-container {
    overflow-x: auto;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

.data-table th, .data-table td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.data-table thead th {
    background-color: var(--neutral-lightest);
    font-weight: 700;
    color: var(--primary-blue);
    position: sticky;
    top: 0;
    white-space: nowrap;
}

.data-table thead th[data-sort-type] {
    cursor: pointer;
}

.data-table thead th[data-sort-type]:hover {
    background-color: #e9ecef;
}

.data-table thead th[aria-sort]::after {
    display: inline-block;
    margin-left: 0.5em;
    opacity: 0.7;
}

.data-table thead th[aria-sort='ascending']::after {
    content: '▲';
}

.data-table thead th[aria-sort='descending']::after {
    content: '▼';
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover {
    background-color: #f1f3f5;
}

.filter-container {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--white);
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid var(--neutral-medium);
}

.filter-container label {
    font-weight: 700;
    color: var(--primary-blue);
}

.filter-container select {
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--neutral-medium);
    font-family: 'Lato', sans-serif;
    font-size: 1rem;
    background-color: var(--white);
    cursor: pointer;
}

.funnel-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1.5rem;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.funnel-stage {
    background-color: #e6f0f7;
    padding: 1.5rem 2rem;
    border-radius: 4px;
    text-align: center;
    border: 2px solid var(--primary-blue);
    min-width: 200px;
}

.funnel-stage-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.funnel-stage-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 0.25rem;
}

.funnel-conversion {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-light);
}

.funnel-conversion-rate {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-blue);
    background-color: var(--white);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--neutral-medium);
    margin-bottom: 0.25rem;
}

.calculator-section {
    margin-top: 1.5rem;
}

.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    align-items: center;
}

.calculator-inputs .input-group {
    margin-bottom: 1.5rem;
}

.calculator-inputs label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--text-light);
}

.calculator-inputs input {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--neutral-medium);
    border-radius: 4px;
    transition: border-color 0.3s ease;
}

.calculator-inputs input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(0, 78, 137, 0.2);
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-blue-dark);
}

.calculator-result {
    text-align: center;
    background-color: #e6f0f7;
    padding: 2rem;
    border-radius: 8px;
}

.calculator-result h4 {
    margin: 0 0 1rem 0;
    color: var(--primary-blue);
    font-size: 1.25rem;
}

.calculator-result p {
    margin: 0;
    font-size: 3rem;
    font-weight: 700;
    color: var(--success-green);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 992px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }
    .calculator-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .tabs-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 5px;
    }

    .funnel-container {
        flex-direction: column;
        gap: 1.5rem;
    }

    .funnel-conversion i {
        transform: rotate(90deg);
        margin: 0.5rem 0;
    }
}