/* ========================================
   CACHE MANAGEMENT REMINDER
   ======================================== */
/*
   IMPORTANT: When this CSS file is updated, you MUST increment
   the version number in the following HTML files:

   - /index.html (line ~26 and ~32): /css/style.css?vers=00X
   - /survey.html (line ~21 and ~27): /css/style.css?vers=00X

   Current version: 029

   This forces browsers to reload the updated stylesheet and
   prevents users from seeing cached/outdated styles.
*/

/* ========================================
   COLOR PALETTE
   Balanced Dark Mode - AAA Accessible
   ======================================== */
/*
   Primary Colors:
   - Deep Slate: #1a2332 (primary background)
   - Medium Slate: #2a3444 (secondary background)
   - Bright Cyan: #A8D5E2 (primary text)
   - Soft Blue: #D4E8F0 (headings h2)
   - Pale Blue: #E8F4F8 (h1)
   - Muted Teal: #5A93AC (accents, links)
   
   Contrast Ratios (AAA = 7:1+):
   - #E8F4F8 on #1a2332: 13.1:1 ✓
   - #D4E8F0 on #1a2332: 11.8:1 ✓
   - #A8D5E2 on #1a2332: 9.2:1 ✓
   - #5A93AC on #1a2332: 7.1:1 ✓
*/

/* applies border-box to entire site */
*, *::before, *::after {
    box-sizing: border-box;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

/* color applied when user highlights text on a page */ 
/* adapted from HTML5 Boilerplate v8.0.0 | MIT License | https://html5boilerplate.com/ */
::selection {
    color: #1a2332;
    background: #A8D5E2;
    text-shadow: none;
}

/* ========================================
   LAYOUT & SPACING
   ======================================== */

/* styles for entire site */
:root {
    font-family: 'Source Sans Pro', sans-serif;
    font-weight: 400;
    line-height: 1.8;
    color: #D4E8F0;
}

/* main container for html pages */
html {
    background: #1a2332;
    min-height: 100vh;
    scroll-padding-top: 6.5rem;
}

/* main container for body of html pages */
body {
    margin: 0 auto;
    padding: 1.5rem 1rem;
    width: 100%;
    max-width: 1366px;
    overflow-x: hidden;
    text-align: center;
    font-size: 1.3rem;
}

/* Small devices (phones, 480px and up) */
@media (min-width: 480px) {
    body {
        padding: 1.5rem 1.5rem;
    }
}

/* Small to medium devices (large phones/small tablets, 600px and up) */
@media (min-width: 600px) {
    body {
        padding: 1.5rem 2rem;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    body {
        padding: 1.5rem 2.5rem;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    body {
        padding: 1.5rem 3rem;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    body {
        padding: 1.5rem 4rem;
    }
}

/* align header and main content to left */
header,
main,
figure {
    text-align: left;
    max-width: 1366px;
    margin-left: auto;
    margin-right: auto;
}

figure {
    margin: 0 auto;
}

/* Add top margin to all figures except the header figure */
figure:not(#header) {
    margin-top: 2.8rem;
}

/* Ensure images don't overflow their containers */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Clickable images - show cursor and hover effect */
figure a {
    display: block;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

figure a:hover {
    opacity: 0.85;
}

figure a:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Figure caption styling */
.caption {
    font-size: 1.1rem;
    line-height: 1.5;
    text-align: left;
    margin-top: 0.75rem;
    margin-bottom: 2rem;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

/* headings use Noto Serif font */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Serif', serif;
    text-align: center;
}

h1 {
    font-size: 2.3rem;
    line-height: 1.2;
    color: #E8F4F8;
    border-bottom: 3px solid #5A93AC;
    padding-bottom: 1rem;
    margin-bottom: 3rem;
    margin-top: 3.5rem; /* spacing for fixed nav */
    width: 100%;
}

/* Extra small devices (phones, up to 400px) */
@media (max-width: 400px) {
    h1 {
        font-size: 1.85rem;
    }
}

h2 {
    font-size: 2.0rem;
    color: #D4E8F0;
    margin-top: 3rem;
    margin-bottom: 2rem;
    position: relative;
}

/* Extra small devices (phones, up to 400px) */
@media (max-width: 400px) {
    h2 {
        font-size: 1.4rem;
    }
}

h2::after {
    content: '';
    display: block;
    width: 240px;
    height: 3px;
    background: #5A93AC;
    margin: 0.5rem auto 0;
}

h3 {
    font-size: 1.65rem;
    font-style: italic;
    color: #D4E8F0;
    margin-top: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
}

/* Extra small devices (phones, up to 400px) */
@media (max-width: 400px) {
    h3 {
        font-size: 1.25rem;
    }
}

h3::after {
    content: '';
    display: block;
    width: 80px;
    height: 12px;
    background-image: url("data:image/svg+xml,%3Csvg width='80' height='12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M 0 6 Q 20 0, 40 6 Q 60 12, 80 6' stroke='%235A93AC' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    margin: 0.5rem auto 0;
}

h4 {
    font-size: 1.4rem;
    color: #D4E8F0;
    margin-top: 3rem;
    margin-bottom: 1rem;
    text-align: left;
}

/* Extra small devices (phones, up to 400px) */
@media (max-width: 400px) {
    h4 {
        font-size: 1.05rem;
    }
}

/* horizontal rule styling */
hr {
    border: none;
    border-top: 2px solid #5A93AC;
    margin: 3rem auto;
    max-width: 850px;
}

section {
    margin-bottom: 3.5rem;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
}

/* Extra small devices (phones, up to 400px) */
@media (max-width: 400px) {
    section {
        padding: 0;
    }
}

/* Mobile devices (max-width: 767px) */
@media (max-width: 767px) {
    section {
        padding: 0;
    }
}

section[aria-labelledby="survey"],
section[aria-labelledby="survey-box"] {
    border: 2px solid #5A93AC;
    padding: 1.25rem 2rem;
    border-radius: 8px;
    background: rgba(90, 147, 172, 0.05);
}

section[aria-labelledby="survey"] h2,
section[aria-labelledby="survey-box"] h2 {
    margin-top: 0;
}

/* ========================================
   COMPONENTS
   ======================================== */

/* Table styling */
table {
    font-size: 1.2rem;
    width: 100%;
    border-collapse: collapse;
    margin: 2rem auto;
    max-width: 850px;
}

th, td {
    padding: .5rem 1rem;
    text-align: left;
    border: 1px solid #5A93AC;
}

th {
    background: rgba(90, 147, 172, 0.15);
    color: #E8F4F8;
    font-weight: 600;
}

td {
    background: rgba(90, 147, 172, 0.05);
}

/* Contents box styling */
.contents-box {
    border: 2px solid #5A93AC;
    padding: 1.25rem 2rem;
    border-radius: 8px;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.2rem;
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .contents-box {
        max-width: 425px;
    }

    .contents-box:has(#results-brief) {
        max-width: 75%;
    }

    /* Project developers list: center based on longest item */
    #project-developers + ul {
        width: fit-content;
        margin-left: auto;
        margin-right: auto;
    }
}

.contents-box h3 {
    margin-top: 0;
    font-size: 1.4rem;
}

.contents-box h3::after {
    width: 50px;
    background-image: url("data:image/svg+xml,%3Csvg width='50' height='12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M 0 6 Q 12.5 0, 25 6 Q 37.5 12, 50 6' stroke='%235A93AC' stroke-width='2' fill='none'/%3E%3C/svg%3E");
}

.contents-box ol {
    text-align: left;
    margin: 0;
    padding-left: 1.5rem;
}

/* Menu-specific styling: reduce spacing between items and center list */
.contents-box:has(#menu) {
    padding-top: 1.5rem;
    padding-bottom: 2rem;
}

#menu {
    font-style: normal;
    text-transform: uppercase;
    margin-bottom: 0;
}

#menu + ol {
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

/* Results brief specific styling */

.contents-box:has(#results-brief) {
    margin-top: 2.8rem;
}

#results-brief {
    font-style: normal;
}

#results-brief + ol {
    margin-bottom: 0.5rem;
}

/* navigation styling */
[data-include="nav"] {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background: #1a2332;
    z-index: 100;
    padding: 0.75rem 2.5rem;
    width: 100%;
    max-width: 1366px;
    border-bottom: 1px solid transparent;
    transition: border-bottom-color 0.3s ease;
}

[data-include="nav"].scrolled {
    border-bottom-color: white;
}

nav {
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 0;
    gap: 1rem;
}

nav .page-title {
    text-align: left;
    color: #E8F4F8;
    font-weight: 700;
    font-size: 1.1rem;
    flex: 0 1 auto;
}

nav ul,
.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: nowrap;
    gap: 1rem;
    align-items: center;
    flex: 0 0 auto;
}

nav ul li,
.nav-menu li {
    text-align: center;
}

nav ul li a,
.nav-menu li a {
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: block;
}

/* Hamburger button - hidden on desktop */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: #E8F4F8;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    line-height: 1;
    z-index: 200;
}

.hamburger:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Mobile menu clone and overlay - hidden on desktop */
.nav-menu-mobile {
    display: none;
}

.nav-menu-close {
    display: none;
}

.nav-overlay {
    display: none;
}

/* Mobile nav (below 768px) */
@media (max-width: 767px) {
    [data-include="nav"] {
        padding: 0.75rem 1rem;
    }

    .hamburger {
        display: block;
    }

    nav .nav-menu {
        display: none;
    }

    .nav-menu-mobile {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -260px;
        width: 260px;
        height: 100vh;
        background: #2a3444;
        padding: 4rem 1.5rem 2rem;
        margin: 0;
        gap: 0;
        transition: right 0.3s ease;
        z-index: 150;
        box-shadow: -2px 0 8px rgba(0, 0, 0, 0.3);
    }

    .nav-menu-mobile.open {
        right: 0;
    }

    .nav-menu-mobile li {
        text-align: left;
        padding: 0;
    }

    .nav-menu-mobile li a {
        font-size: 1.2rem;
        padding: 0.75rem 0;
        display: block;
    }

    .nav-menu-close {
        display: block;
        position: absolute;
        top: 0.75rem;
        right: 0.75rem;
        background: none;
        border: none;
        color: #E8F4F8;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 0.25rem 0.5rem;
        line-height: 1;
    }

    .nav-menu-close:focus {
        outline: 2px solid white;
        outline-offset: 2px;
    }

    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(200, 200, 210, 0.92);
        z-index: 140;
    }

    .nav-overlay.open {
        display: block;
    }
}

/* footer styling */
footer ul {
    list-style: none;
    padding: 0 1rem;
    margin: 0;
    margin-top: 4rem;
    padding-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0;
    border-top: 1px solid rgba(90, 147, 172, 0.2);
    font-size: 1.1rem;
    text-align: center;
}

footer ul li {
    display: inline;
}

footer ul li:not(:last-child)::after {
    content: ' | ';
    margin-left: 0.25rem;
    margin-right: 0.25rem;
}

/* Extra small devices (phones, up to 400px) */
@media (max-width: 400px) {
    footer ul {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }
}

/* paragraph spacing */
p {
    margin-bottom: 1.25rem;
    line-height: 1.8;
    color: #D4E8F0;
}

/* list styling */
ul, ol {
    padding-left: 1.5rem;
    padding-right: 0;
    margin-top: 0;
    margin-bottom: 0;
}

/* Add spacing for nested lists */
li > ul,
li > ol {
    margin-top: .25rem;
}

/* Style nested unordered lists with hollow circles */
li > ul {
    list-style-type: circle;
}

li {
    padding: .25rem 0;
}

/* Remove top padding only for lists directly following headings */
h1 + ul > li:first-child,
h1 + ol > li:first-child,
h2 + ul > li:first-child,
h2 + ol > li:first-child,
h3 + ul > li:first-child,
h3 + ol > li:first-child,
h4 + ul > li:first-child,
h4 + ol > li:first-child {
    padding-top: 0;
}

/* Remove top padding from list item that follows a list item containing a nested list */
li:has(> ul) + li,
li:has(> ol) + li {
    padding-top: 0;
}

/* Remove bottom padding from last item in nested lists */
li > ul > li:last-child,
li > ol > li:last-child {
    padding-bottom: 0;
}

/* center utility class */
.center {
    text-align: center;
}

/* ========================================
   INTERACTIVE ELEMENTS & LINKS
   ======================================== */

/* link styling */
a {
    color: #5A93AC;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: color 0.3s ease;
}

a:link,
a:visited {
    color: #5A93AC;
}

a:hover {
    color: #A8D5E2;
    outline: 2px solid white;
    outline-offset: 2px;
}

a:active {
    color: #D4E8F0;
}

/* page title link styling */
.page-title a {
    /* text-decoration: none; */
    color: inherit;
    font-weight: 600;
}

/* hover effects for navigation and footer links */
nav ul li a:hover,
.nav-menu li a:hover,
footer ul li a:hover {
    color: #A8D5E2;
}

/* screen-reader-only utility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* custom focus styles for accessibility */
*:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

/* email link styling */
a.email {
    font-size: 1.0rem;
    text-transform: uppercase;
    margin-left: 0.35rem;
    font-weight: 600;
}

a.email::after {
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    content: "\f0e0";
    margin-left: 0.5rem;
}

/* skip to content link for accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 6px;
    background: #1a2332;
    color: white;
    padding: 10px 16px;
    z-index: 1000;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.9rem;
    border: 2px solid white;
}

.skip-link:focus {
    top: 6px;
    outline: 3px solid white;
    outline-offset: 2px;
}

/* ========================================
   SPECIALIZED COMPONENTS
   ======================================== */

/* Sankey Diagram (homepage) — always interactive, CSS-scaled on narrow viewports */
#sankey-chart {
    display: block;
}

#sankey-chart .hoverlayer .hovertext path {
    fill: white !important;
    stroke: #333 !important;
    fill-opacity: 1 !important;
}

#sankey-chart .hoverlayer .hovertext text {
    fill: black !important;
}

/* Tighten gap between h1 and Sankey on homepage */
h1#introduction {
    margin-bottom: 1.5rem;
}

.sankey-chart-container-home {
    width: 100%;
}

.sankey-chart-scaler-home {
    overflow: hidden;
}

@media (max-width: 767px) {
    #sankey-chart {
        width: 768px !important;
        max-width: none !important;
        transform-origin: top left;
    }
}

/* Gradual fade for hover tooltips on all Plotly charts */
.hoverlayer .hovertext {
    transition: opacity 0.3s ease;
}

/* ========================================
   Q8 NETWORK GRAPH
   ======================================== */

.q8-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
}

@media (min-width: 1000px) {
    .q8-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.q8-chart-scaler {
    overflow: hidden;
}

#q8-chart {
    width: 1000px;
    max-width: 100%;
    height: 680px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
}

@media (max-width: 991px) {
    #q8-chart {
        height: 550px;
    }
}

@media (max-width: 767px) {
    #q8-chart {
        width: 768px;
        max-width: none;
        height: 550px;
        transform-origin: top left;
    }
}

.q8-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

.q8-legend {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: rgba(90, 147, 172, 0.08);
    border-radius: 8px;
    border: 1px solid rgba(90, 147, 172, 0.2);
    text-align: left;
}

.q8-legend h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    text-align: center;
}

.q8-legend-items {
    columns: 2;
    column-gap: 1.25rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

@media (max-width: 600px) {
    .q8-legend-items {
        columns: 1;
    }
}

.q8-legend-items li {
    display: flex;
    align-items: flex-start;
    font-size: 1.1rem;
    padding: 0.15rem 0.4rem;
    break-inside: avoid;
}

.q8-legend-color {
    margin-top: 0.3rem;
}

.q8-legend-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-right: 0.5rem;
    flex-shrink: 0;
}

/* ========================================
   Q6 DISTRIBUTION CHART
   ======================================== */

.q6-filter-container {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.q6-filter-row {
    margin-bottom: 1rem;
}

@media (min-width: 860px) {
    .q6-filter-container {
        display: flex;
        justify-content: center;
        gap: 2rem;
    }

    .q6-filter-row {
        display: flex;
        align-items: center;
        gap: 1rem;
        margin-bottom: 0;
    }
}

@media (min-width: 600px) and (max-width: 859px) {
    .q6-filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: -1rem;
    }

    .q6-filter-row {
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
        margin-bottom: 1.4rem;
    }

    .q6-filter-row label {
        position: absolute;
        right: calc(100% + 1rem);
        white-space: nowrap;
    }
}

@media (max-width: 599px) {
    .q6-filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: -1rem;
    }

    .q6-filter-row {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .q6-filter-row label {
        position: static;
    }
}

.q6-filter-row label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #A8D5E2;
    margin: 0;
    white-space: nowrap;
}

.q6-filter-row select {
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    line-height: 1.4;
    border: 2px solid #ddd;
    border-radius: 4px;
    background-color: white;
    color: #333;
    cursor: pointer;
    font-family: 'Source Sans Pro', sans-serif;
    transition: border-color 0.2s;
    min-width: 250px;
}

.q6-filter-row select:hover {
    border-color: #5A93AC;
}

.q6-filter-row select:focus {
    outline: none;
    border-color: #5A93AC;
}

.q6-filter-row select option {
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 0.85rem;
    color: #333;
    line-height: 1.8;
}

.q6-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
    overflow: hidden;
}

@media (min-width: 1000px) {
    .q6-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.q6-chart-scaler {
    overflow: hidden;
}

#q6-chart {
    width: 1000px;
    max-width: 100%;
    height: 540px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

@media (max-width: 991px) {
    #q6-chart {
        height: 500px;
    }
}

@media (max-width: 767px) {
    #q6-chart {
        width: 768px;
        max-width: none;
        height: 500px;
        transform-origin: top left;
    }
}

.q6-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

/* ============================================================
   Q13/Q14 CONTEXT CHARTS (graphs-analysis)
   ============================================================ */

.q13-filter-container {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.q13-filter-row {
    margin-bottom: 1rem;
}

@media (min-width: 860px) {
    .q13-filter-container {
        display: flex;
        justify-content: center;
        gap: 2rem;
    }

    .q13-filter-row {
        display: flex;
        align-items: center;
        gap: 1rem;
        margin-bottom: 0;
    }
}

@media (min-width: 600px) and (max-width: 859px) {
    .q13-filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: -1em;
    }

    .q13-filter-row {
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
        margin-bottom: 1.4rem;
    }

    .q13-filter-row label {
        position: absolute;
        right: calc(100% + 1rem);
        white-space: nowrap;
    }
}

@media (max-width: 599px) {
    .q13-filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: -1.5rem;
    }

    .q13-filter-row {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .q13-filter-row label {
        position: static;
    }
}

.q13-filter-row label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #A8D5E2;
    margin: 0;
    white-space: nowrap;
}

.q13-filter-row select {
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    line-height: 1.4;
    border: 2px solid #ddd;
    border-radius: 4px;
    background-color: white;
    color: #333;
    cursor: pointer;
    font-family: 'Source Sans Pro', sans-serif;
    transition: border-color 0.2s;
    min-width: 250px;
}

.q13-filter-row select:hover {
    border-color: #5A93AC;
}

.q13-filter-row select:focus {
    outline: none;
    border-color: #5A93AC;
}

.q13-filter-row select option {
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 0.85rem;
    color: #333;
    line-height: 1.8;
}

.q13-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
    overflow: hidden;
}

@media (min-width: 1000px) {
    .q13-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.q13-chart-scaler {
    width: 1000px;
    overflow: visible;
    position: relative;
    transform-origin: top left;
}

.q13-legend {
    list-style: none;
    padding: 0;
    margin: 0;
    position: absolute;
    left: 170px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
}

.q13-legend li {
    display: flex;
    align-items: center;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 16px;
    color: black;
    padding: 0.35rem 0;
}

.q13-legend-color {
    width: 14px;
    height: 14px;
    border-radius: 2px;
    margin-right: 0.5rem;
    flex-shrink: 0;
}

#q13-chart {
    width: 1000px;
    height: 540px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

/* Custom HTML hover tooltip for Q13 pie chart */
.q13-hover-tooltip {
    display: none;
    position: fixed;
    background: white;
    color: black;
    border: 1px solid #5AAFE0;
    border-radius: 4px;
    padding: 8px 12px;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 16px;
    line-height: 1.4;
    z-index: 10000;
    pointer-events: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
    white-space: nowrap;
}

.q13-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

.q14-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
    overflow: hidden;
}

@media (min-width: 1000px) {
    .q14-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.q14-chart-scaler {
    width: 1000px;
    overflow: visible;
    position: relative;
    transform-origin: top left;
}

#q14-chart {
    width: 1000px;
    height: 600px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

.q14-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

/* ========================================
   Q15 DISTRIBUTION CHART (Activities)
   ======================================== */

.q15-filter-container {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.q15-filter-row {
    margin-bottom: 1rem;
}

@media (min-width: 860px) {
    .q15-filter-container {
        display: flex;
        justify-content: center;
        gap: 2rem;
    }

    .q15-filter-row {
        display: flex;
        align-items: center;
        gap: 1rem;
        margin-bottom: 0;
    }
}

@media (min-width: 600px) and (max-width: 859px) {
    .q15-filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: -1rem;
    }

    .q15-filter-row {
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
        margin-bottom: 1.4rem;
    }

    .q15-filter-row label {
        position: absolute;
        right: calc(100% + 1rem);
        white-space: nowrap;
    }
}

@media (max-width: 599px) {
    .q15-filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: -1rem;
    }

    .q15-filter-row {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .q15-filter-row label {
        position: static;
    }
}

.q15-filter-row label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #A8D5E2;
    margin: 0;
    white-space: nowrap;
}

.q15-filter-row select {
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    line-height: 1.4;
    border: 2px solid #ddd;
    border-radius: 4px;
    background-color: white;
    color: #333;
    cursor: pointer;
    font-family: 'Source Sans Pro', sans-serif;
    transition: border-color 0.2s;
    min-width: 250px;
}

.q15-filter-row select:hover {
    border-color: #5A93AC;
}

.q15-filter-row select:focus {
    outline: none;
    border-color: #5A93AC;
}

.q15-filter-row select option {
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 0.85rem;
    color: #333;
    line-height: 1.8;
}

.q15-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
    overflow: hidden;
}

.q15-chart-scaler {
    width: 1000px;
    overflow: visible;
    position: relative;
    transform-origin: top left;
}

#q15-chart {
    width: 1000px;
    height: 930px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

@media (min-width: 1000px) {
    .q15-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.q15-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

/* ============================================================
   SANKEY DIAGRAM (graphs-analysis)
   ============================================================ */

.sankey-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
}

@media (min-width: 1000px) {
    .sankey-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.sankey-chart-scaler {
    overflow: hidden;
}

#sankey-chart-ga {
    width: 1000px;
    max-width: 100%;
    height: 600px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

#sankey-chart-ga .hoverlayer .hovertext path {
    fill: white !important;
    stroke: #333 !important;
    fill-opacity: 1 !important;
}

#sankey-chart-ga .hoverlayer .hovertext text {
    fill: black !important;
}

@media (max-width: 991px) {
    #sankey-chart-ga {
        height: 550px;
    }
}

@media (max-width: 767px) {
    #sankey-chart-ga {
        width: 768px;
        max-width: none;
        height: 550px;
        transform-origin: top left;
    }
}

.sankey-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

/* ========================================
   Q15 / Q21 HEATMAP CHART
   ======================================== */

.heatmap-filter-container {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 1rem;
}

@media (min-width: 631px) {
    .heatmap-filter-container {
        flex-direction: row;
        justify-content: space-between;
        gap: 1rem;
    }
}

@media (min-width: 631px) and (max-width: 859px) {
    .heatmap-filter-group legend {
        font-size: 0.85rem; /* Reduced further to ensure it fits on one line */
        padding: 0 0.25rem; /* Shaved down the padding to buy extra horizontal space */
        letter-spacing: -0.02em; /* Very slightly tightens the character spacing */
    }
}

@media (max-width: 630px) {
    .heatmap-filter-container {
        gap: 2rem; /* Creates equal spacing between the two stacked fieldsets */
        margin-bottom: 0; /* Resets the negative margin to balance space above the chart */
    }
    
    .heatmap-filter-group legend {
        margin: 0 auto;
    }
    
    .heatmap-checkbox-container {
        width: fit-content;
        margin-left: auto;
        margin-right: auto;
        text-align: left;
    }
    
    .heatmap-button-group {
        justify-content: center;
    }
}

.heatmap-filter-group {
    flex: 1;
    text-align: left;
}

.heatmap-filter-group fieldset {
    border: 1px solid #5A93AC;
    border-radius: 8px;
    padding: 1rem;
    background: rgba(90, 147, 172, 0.05);
    height: 100%; /* Forces both boxes to be the same height */
    display: flex;
    flex-direction: column;
}

.heatmap-filter-group legend {
    font-size: 1.1rem;
    font-weight: 600;
    color: #A8D5E2;
    padding: 0 0.5rem;
}

.heatmap-checkbox-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
    max-height: 175px;
    overflow-y: auto;
    margin-bottom: 1rem;
    padding-right: 0.5rem;
}

.heatmap-checkbox-item {
    display: flex;
    align-items: flex-start;
}

.heatmap-checkbox-item input {
    margin-top: 0.35rem;
    margin-right: 0.5rem;
    cursor: pointer;
}

.heatmap-checkbox-item label {
    font-size: 1.1rem;
    color: #D4E8F0;
    cursor: pointer;
    line-height: 1.4;
}

.heatmap-button-group {
    display: flex;
    gap: 0.75rem;
    margin-top: auto; /* Anchors buttons to the bottom */
}

.heatmap-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
}

.heatmap-btn.select-all {
    background-color: #5A93AC;
    color: #1a2332;
}

.heatmap-btn.select-all:hover {
    background-color: #A8D5E2;
}

.heatmap-btn.clear-all {
    background-color: transparent;
    color: #A8D5E2;
    border: 1px solid #5A93AC;
}

.heatmap-btn.clear-all:hover {
    background-color: rgba(90, 147, 172, 0.1);
}

.heatmap-chart-container {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
    overflow: hidden;
}

.heatmap-chart-scaler {
    width: 1000px;
    overflow: visible;
    position: relative;
    transform-origin: top left;
}

#heatmap-chart {
    width: 1000px;
    height: 800px;
    margin: 0 auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

@media (min-width: 1000px) {
    .heatmap-chart-container {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }
}

.heatmap-touch-info {
    display: none;
    margin: 0.75rem auto;
    padding: 0.75rem 1rem;
    max-width: 600px;
    background: rgba(90, 147, 172, 0.12);
    border: 1px solid rgba(90, 147, 172, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
}

/* Site Accessibility section */
[aria-labelledby="page-overview"] ul {
    list-style: none;
    padding-left: 1.5rem;
}

[aria-labelledby="page-overview"] ul > li::before {
    content: "– ";
    margin-left: -1.25rem;
}

[aria-labelledby="page-overview"] code {
    font-size: 0.75em;
}