:root {
    --main-bg: #F0F8FF;
    --primary-color: #B0C4DE;
    --secondary-color: #6495ED;
    --hover-color: #4169E1;
    --title-color: #000080;
    --text-color: #2F4F4F;
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--main-bg);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 1600px;
    margin: auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
    color: var(--title-color);
    text-align: center;
    margin-bottom: 20px;
}

.main-content {
    display: flex;
    gap: 20px;
}

.input-column {
    flex: 1;
}

.output-column {
    flex: 2;
}

/* Form Styling */
.form-group-box {
    border: 1px solid var(--primary-color);
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 20px;
}

.form-group-title {
    font-weight: bold;
    color: var(--title-color);
    margin-bottom: 15px;
}

.form-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    align-items: center;
}

label {
    font-weight: bold;
}

input[type="text"], input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    width: 100%;
    margin-top: 10px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--hover-color);
}

#advButton {
    background-color: var(--primary-color);
    color: var(--text-color);
}
#advButton:hover {
    background-color: var(--secondary-color);
    color: white;
}

/* Tabs */
.tabs {
    overflow: hidden;
    border-bottom: 1px solid var(--primary-color);
}

.tab-link {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
    width: auto;
    margin: 0;
    border-radius: 5px 5px 0 0;
}

.tab-link:hover {
    background-color: var(--primary-color);
}

.tab-link.active {
    background-color: var(--hover-color);
    color: white;
}

.tab-content {
    display: none;
    padding: 6px 12px;
    border-top: none;
}

/* Table */
.table-container {
    max-height: 600px;
    overflow-y: auto;
    margin-top: 10px;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    border: 1px solid var(--primary-color);
    padding: 8px;
    text-align: right;
}
th {
    background-color: var(--title-color);
    color: white;
    position: sticky;
    top: 0;
}

/* Charts & Metrics */
.chart-metrics-container {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.chart-container {
    flex: 2;
}
.metrics-container {
    flex: 1;
}

/* Modal */
.modal { display: none; position: fixed; z-index: 1; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.4); }
.modal-content { background-color: #fefefe; margin: 15% auto; padding: 20px; border: 1px solid #888; width: 50%; border-radius: 8px; }
.close-button { color: #aaa; float: right; font-size: 28px; font-weight: bold; }
.close-button:hover, .close-button:focus { color: black; text-decoration: none; cursor: pointer; }