:root {
    --primary-background-color: white;
    --primary-foreground-color: black;
    --dark-primary-foreground-color: #f9f9f9;
    --primary-header-color: #f2f2f2;
    --primary-highligh-color: #f9f9f9;
    --secondary-background-color: #343a40;
    --secondary-foreground-color: white;
    --secondary-highligh-color: #ced4da;
    --disabled-color: #ccc;
    --error-foreground-color: #d9534f;
    --dark-error-foreground-color: #d9534f;
    --error-background-color: #f2dede;
    --action-color: #337ab7;
    --action-hover-color: #286090;
    --action-cancel-color: #6c757d;
    --action-cancel-hover-color: #5a6268;
    --success-foreground-color: #28a745;
    --dark-success-foreground-color: #6ADF78;
    --success-background-color: #eaf6ec;
    --warning-background-color: #fff9db;
    --warning-foreground-color: #8a6d3b;
    --warning-highlight-color: #ffe58f;
    --legend-complete-color: #C4D7ED;
    --legend-incomplete-color: #f5c77e;
    --legend-quartile-color: #337ab7;
    --legend-median-color: #000;
    --legend-median-color-light: #222;
    --shadow-color-dark: rgba(0, 0, 0, 0.5);
    --shadow-color-light: rgba(0, 0, 0, 0.1);
}

nav,
footer {
    background-color: var(--secondary-background-color);
    padding: 1rem 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
    color: var(--secondary-foreground-color);
}

nav a,
footer a {
    color: var(--secondary-foreground-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
}

nav a:hover,
footer a:hover {
    color: var(--secondary-highligh-color);
}

.nav-home-link {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--secondary-foreground-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
}

main {
    padding: 1rem 0 3rem 0;
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
}

body {
    color: var(--primary-foreground-color);
    background-color: var(--primary-background-color);
    font-family: 'Inter', sans-serif;
}

.form-group {
    margin-bottom: 1.25rem;
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
}

.starting-amount-group label,
.starting-amount-group input {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.allocation-item {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.allocation-item label {
    width: 180px;
    font-weight: 500;
    flex-shrink: 0;
}

.allocation-item input[type='range'] {
    flex-grow: 1;
}

.allocation-item input[type='number'] {
    width: 70px;
    text-align: right;
}

.total-summary {
    margin-top: 1.5rem;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease-in-out;
}

.total-summary.invalid {
    color: var(--error-foreground-color);
    background-color: var(--error-background-color);
}

.error-message {
    font-weight: normal;
}

button {
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    background-color: var(--action-color);
    color: var(--secondary-foreground-color);
}

button:disabled {
    background-color: var(--disabled-color);
    cursor: not-allowed;
}

.results-container,
.instructions {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--primary-highligh-color);
    border: 1px solid var(--secondary-highligh-color);
    border-radius: 6px;
    box-shadow: 0 2px 4px var(--shadow-color-light);
}

h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-foreground-color);
    border-bottom: 1px solid var(--secondary-highligh-color);
    padding-bottom: 0.5rem;
}

.results-container p {
    margin-bottom: 1rem;
    line-height: 1.5;
    padding: 0;
    margin: 0;
}

.summary,
.instructions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    row-gap: 0.5rem;
    /* smaller space vertically */
    column-gap: 0.5rem;
    /* keep horizontal spacing */
    background-color: var(--primary-highligh-color);
    padding: 1rem;
    border-radius: 4px;
}

.disclaimer {
    padding: 0.5 rem;
    font-style: italic;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th,
td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--primary-highligh-color);
    ;
}

th {
    background-color: var(--primary-header-color);
}

td.positive {
    color: var(--success-foreground-color);
}

td.negative {
    color: var(--error-foreground-color);
}

.form-error-message {
    color: var(--error-foreground-color);
    background-color: var(--error-background-color);
    padding: 0.75rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.form-success-message {
    color: var(--success-foreground-color);
    background-color: var(--success-background-color);
    padding: 0.75rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.chart-container {
    position: relative;
    /* By removing the fixed height, the container's height will now be determined
        by the canvas, which respects the aspectRatio set in the chart options. */
    width: 100%;
    margin-bottom: 2rem;
    margin-top: 1.5rem;
}

#customLegend {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.legend-box.complete {
    width: 15px;
    height: 2px;
    background: var(--legend-complete-color);
    display: inline-block;
}

.legend-line.incomplete {
    width: 15px;
    height: 2px;
    background: var(--legend-incomplete-color);
    display: inline-block;
}

.legend-line.quartile {
    width: 15px;
    height: 2px;
    background: var(--legend-quartile-color);
    display: inline-block;
}

.legend-line.median {
    width: 15px;
    height: 2px;
    background: var(--legend-median-color);
    display: inline-block;
}

.material-icons {
    font-size: 1.2rem;
}

.methodology-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
}

.methodology-container h1 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-foreground-color);
}

.alert-warning {
    display: flex;
    align-items: center;
    gap: 0.5rem;

    background-color: var(--warning-background-color);
    color: var(--warning-foreground-color);
    border: 1px solid var(--warning-highlight-color);
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    font-weight: 500;
    font-size: 1rem;
}

.alert-warning .icon {
    font-size: 1.2rem;
    line-height: 1;
}

/* Container becomes a flexbox */
.info-block {
  display: flex;
  align-items: flex-start; /* top-align text and image */
  gap: 1rem;               /* space between image and text */

  background-color: var(--primary-highligh-color);
  border: 1px solid var(--secondary-highligh-color);
  border-radius: 6px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 4px var(--shadow-color-light);
  flex-wrap: wrap; /* allows stacking on small screens */
}

.advanced-options {
	background-color: var(--primary-background-color);
}

.advanced-options .checkbox-container {
	display: flex;
	gap: 1.5rem;
}

.advanced-options .checkbox-item {
	min-width: 200px;
	flex: 1;
	padding: 0 1rem;
	position: relative;
}

/* Add subtle vertical lines between the three options except the last one */
.advanced-options .checkbox-item:not(:last-child)::after {
	content: "";
	position: absolute;
	top: 10%;
	right: 0;
	width: 1px;
	height: 80%;
	background-color: rgba(0, 0, 0, 0.1); /* subtle vertical line */
}

/* Reset margins for all children */
.info-block > * {
  margin: 0;
}

/* Heading inside the flex container spans full width */
.info-block h2 {
  width: 100%;
  margin-top: 0;
  margin-bottom: 0.25rem;
  font-size: 1.4rem;
  border-bottom: 1px solid var(--secondary-highligh-color);
  padding-bottom: 0.5rem;
}

.info-block h3 {
  width: 100%;
  margin-top: 0;
  margin-bottom: 0.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-bottom: 1px solid var(--secondary-highligh-color);
  padding-bottom: 0.5rem;
}


/* Image now sits in flex flow, no floats needed */
.info-block img {
  max-width: 300px;
  flex-shrink: 0; /* prevents shrinking below max-width */
  border-radius: 4px;
}

/* Style list items for data sets */
.styled-list {
    list-style-type: disc;
    padding-left: 1.5rem;
    line-height: 1.6;
}

.verify-container {
    max-width: 600px;
    margin: 2rem auto;
    padding: 2rem;
    text-align: center;
    background-color: var(--primary-background-color);
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow-color-light);
}

h1 {
    color: var(--action-cancel-hover-color);
    margin-bottom: 1.5rem;
}

.error-message {
    color: var(--error-foreground-color);
    font-weight: bold;
}

/* Checkbox styling */
.checkbox-container {
	display: flex;
	gap: 2rem;
	align-items: center;
}

.checkbox-item {
	display: flex;
	flex-direction: column; /* stack items vertically */
	align-items: flex-start; /* left-align everything */
	gap: 0.25rem; /* smaller gap between elements */
}

.checkbox-item input[type="checkbox"] {
	margin-bottom: 0.25rem;
}

.checkbox-item label {
	font-weight: 500;
}

.checkbox-label-row {
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.tooltip {
	font-size: 0.8rem;
	font-style: italic;
	color: var(--action-cancel-color);
}

/* Tooltip style for info icon and small label */
.label-tooltip {
    display: inline-flex;
    align-items: flex-start;
    cursor: help;
    position: relative;
}

.label-tooltip .material-symbols-outlined {
    font-variation-settings:
        'opsz' 20,
        'wght' 400;
    font-size: 0.9rem;
    vertical-align: super;
    margin-left: 0.15rem;
}

.label-tooltip small {
    display: none;
    position: absolute;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--legend-median-color-light);
    color: var(--dark-primary-foreground-color);
    padding: 0.3em 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 10;
}

.label-tooltip:hover small {
    display: block;
}

/* Background colors for q1, median, q3 rows with lighter hues */
.q1-row {
    color: var(--dark-primary-foreground-color);
    background-color: var(--legend-quartile-color);
}

.median-row {
    color: var(--dark-primary-foreground-color);
    background-color: var(--legend-median-color-light);
}

.median-row .negative,
.q1-row .negative,
.q3-row .negative {
    font-weight: 600;
    color: var(--dark-error-foreground-color);
}

.median-row .positive,
.q1-row .positive,
.q3-row .positive {
    font-weight: 600;
    color: var(--dark-success-foreground-color);
}

.q3-row {
    color: var(--dark-primary-foreground-color);
    background-color: var(--legend-quartile-color);
}