:root {
    --rkl-primary-color: #3498db;
    --rkl-secondary-color: #2980b9;
    --rkl-accent-color: #2ecc71;
    --rkl-dark-color: #2c3e50;
    --rkl-light-color: #ecf0f1;
    --rkl-error-color: #e74c3c;
}

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

.rkl_container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.rkl_table-container {
    max-height: 500px;
    overflow-y: auto;
    margin-bottom: 30px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.rkl_table-container::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.rkl_table-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.rkl_table-container::-webkit-scrollbar-thumb {
    background: var(--rkl-primary-color);
    border-radius: 4px;
}

.rkl_table-container::-webkit-scrollbar-thumb:hover {
    background: var(--rkl-secondary-color);
}

.rkl_table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0;
}

.rkl_table th {
    position: sticky;
    top: 0;
    background-color: var(--rkl-primary-color);
    z-index: 10;
}

.rkl_title {
    text-align: center;
    color: var(--rkl-primary-color);
    margin-bottom: 30px;
}

.rkl_input-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

.rkl_input-section {
    flex: 1;
    min-width: 250px;
    background-color: var(--rkl-light-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.rkl_input-section h2 {
    color: var(--rkl-secondary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
    border-bottom: 2px solid var(--rkl-primary-color);
    padding-bottom: 8px;
}

.rkl_form-group {
    margin-bottom: 15px;
}

.rkl_label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--rkl-dark-color);
}

.rkl_input,
.rkl_select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border 0.3s;
}

.rkl_input:focus,
.rkl_select:focus {
    outline: none;
    border-color: var(--rkl-primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.rkl_calculate-btn-container {
    width: 100%;
    text-align: center;
    margin: 20px 0;
}

.rkl_button {
    background-color: var(--rkl-primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s;
    min-width: 200px;
    margin: 5px;
}

.rkl_button:hover {
    background-color: var(--rkl-secondary-color);
}

.rkl_button.secondary {
    background-color: var(--rkl-accent-color);
}

.rkl_button.secondary:hover {
    background-color: #27ae60;
}

.rkl_results {
    margin-top: 30px;
    display: none;
}

.rkl_results-title {
    color: var(--rkl-primary-color);
    margin-bottom: 5px;
    text-align: center;
}

.rkl_table,
.rkl_th,
.rkl_td {
    border: 1px solid #ddd;
}

.rkl_th {
    background-color: var(--rkl-primary-color);
    color: white;
    padding: 12px;
    text-align: left;
}

.rkl_td {
    padding: 10px 12px;
}

.rkl_table tr:nth-child(even) {
    background-color: #f2f2f2;
}

.rkl_highlight {
    font-weight: bold;
    color: var(--rkl-accent-color);
}

.rkl_summary-table {
    background-color: var(--rkl-light-color);
}

.rkl_summary-table .rkl_th {
    background-color: var(--rkl-secondary-color);
}

.rkl_export-container {
    text-align: center;
    margin-bottom: 8px;
}

.rkl_chart-container {
    margin: 30px 0;
    position: relative;
    height: 400px;
    width: 100%;
}

@media (max-width: 768px) {
    .rkl_input-row {
        flex-direction: column;
    }

    .rkl_input-section {
        min-width: 100%;
    }

    .rkl_button {
        width: 100%;
    }

    .rkl_export-container {
        text-align: center;
    }

    .rkl_chart-container {
        height: 300px;
    }
}

.rkl_error {
    color: var(--rkl-error-color);
    font-size: 14px;
    margin-top: 5px;
    display: none;
}