/*==============================================================
  PREQOLIMS Website Stylesheet
  
  Table of Contents:
  1. General Styles
  2. Typography
  3. Navigation
  4. Header Styles
  5. Section Styles
  6. Cards & Boxes
  7. Forms & Inputs
  8. Buttons
  9. Footer
  10. Responsive Adjustments
  11. Utility Classes
  12. Page-Specific Styles
==============================================================*/

/*--------------------------------------------------------------
1. General Styles
--------------------------------------------------------------*/
:root {
    /* Primary color palette */
    --primary-color: #4a89dc; /* Blue shade for primary actions */
    --primary-dark: #2B65AF; /*  Darker blue for hover states colore_old #3a6db0; */
    --primary-light: #e8f1ff; /* Light blue for backgrounds */
    
    /* Secondary/accent colors */
    --secondary-color: #5cb85c; /* Green for positive actions */
    --secondary-dark: #409a40; /* Darker green */
    --accent-color: #f0ad4e; /* Orange-yellow accent for attention */
    
    /* Neutral colors */
    --neutral-dark: #333333; /* Dark gray for text */
    --neutral-medium: #666666; /* Medium gray for secondary text */
    --neutral-light: #f8f9fa; /* Light gray for backgrounds */
    --white: #ffffff;
    
    /* Spacing variables */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-xxl: 4rem;
    
    /* Border radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Font sizes */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --font-size-hero: 3rem;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-y: scroll;
}

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--neutral-dark);
    background-color: var(--white);
    overflow-x: hidden;
    padding-top: 76px; /* Navbar height */
    padding-bottom: 100px; /* quanto è alto il footer */
}

img, svg {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

section {
    padding: var(--spacing-xxl) 0;
}

/*--------------------------------------------------------------
2. Typography
--------------------------------------------------------------*/
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--neutral-dark);
}

h1 {
    font-size: var(--font-size-hero);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-lg);
}

.lead {
    font-size: var(--font-size-lg);
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
}

p {
    margin-bottom: var(--spacing-md);
}

.section-divider {
    height: 3px;
    width: 60px;
    background-color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.text-primary {
    color: var(--primary-color) !important;
}

/*--------------------------------------------------------------
3. Navigation
--------------------------------------------------------------*/
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    padding: var(--spacing-sm) 0;
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background-color: rgba(255, 255, 255, 0.98);
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--neutral-dark);
}

.navbar-brand img {
    margin-right: var(--spacing-sm);
}

.navbar-brand span {
    color: var(--primary-color);
}

.nav-link {
    color: var(--neutral-dark);
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    position: relative;
}

.nav-link:hover, .nav-link:focus {
    color: var(--primary-color);
}

.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: var(--primary-color);
}

.dropdown-menu {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius-md);
}

.dropdown-item.active, .dropdown-item:active {
    background-color: var(--primary-color);
}

/*--------------------------------------------------------------
4. Header Styles
--------------------------------------------------------------*/
.hero-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--primary-light);
    position: relative;
    overflow: hidden;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.hero-section h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero-buttons {
    margin-top: var(--spacing-lg);
}

.hero-buttons .btn {
    margin-right: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.page-header {
    background-color: var(--primary-light);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.breadcrumb {
    margin-bottom: 0;
    background-color: transparent;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
}

/*--------------------------------------------------------------
5. Section Styles
--------------------------------------------------------------*/
.bg-light {
    background-color: var(--neutral-light);
}

.about-section, .objectives-section {
    padding: var(--spacing-xxl) 0;
}

.participation-cta {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.participation-cta h2, .contact-cta h2 {
    color: var(--white);
}

.participation-cta .lead, .contact-cta .lead {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    margin-top: var(--spacing-lg);
}

.contact-cta {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.ethics-funding {
    padding: var(--spacing-xxl) 0;
}

.research-team {
    padding: var(--spacing-xxl) 0;
}

.how-to-join {
    padding: var(--spacing-xxl) 0;
}

.eligibility-overview, .patient-eligibility, .hcp-eligibility {
    padding: var(--spacing-xxl) 0;
}

.participation-details {
    padding: var(--spacing-xxl) 0;
}

.what-is-dce, .dce-in-preqolims, .dce-example, .how-dce-works, .participating-dce {
    padding: var(--spacing-xl) 0;
}

.patient-intro, .qol-dimensions, .assessment-tools, .personal-experiences, .how-to-participate {
    padding: var(--spacing-xl) 0;
}

.professional-intro, .research-background, .study-constructs, .dce-professional, .research-implications, .how-to-participate-hcp {
    padding: var(--spacing-xl) 0;
}

.results-status, .preliminary-findings, .study-progress, .upcoming-results {
    padding: var(--spacing-xl) 0;
}

.publication-tabs, .media-coverage, .future-presentations {
    padding: var(--spacing-xl) 0;
}

.centers-intro, .centers-map, .centers-list, .online-participation {
    padding: var(--spacing-xl) 0;
}

.glossary-intro, .glossary-terms {
    padding: var(--spacing-xl) 0;
}

.faq-intro, .faq-content, .additional-questions {
    padding: var(--spacing-xl) 0;
}

.contact-intro, .contact-info, .contact-form, .contact-centers, .follow-us {
    padding: var(--spacing-xl) 0;
}

/*--------------------------------------------------------------
6. Cards & Boxes
--------------------------------------------------------------*/
.card {
    border: none;
    border-radius: var(--border-radius-md);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-title {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.objective-card {
    padding: var(--spacing-lg);
    text-align: center;
    height: 100%;
}

.objective-icon {
    margin-bottom: var(--spacing-md);
}

.team-member {
    text-align: center;
}

.member-avatar {
    margin-bottom: var(--spacing-md);
}

.member-title {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.note-box {
    background-color: var(--primary-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-left: 4px solid var(--primary-color);
}

.note-box h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.info-box {
    background-color: var(--neutral-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.criteria-list {
    margin-bottom: var(--spacing-lg);
    padding-left: 1.5rem;
}

.criteria-list li {
    margin-bottom: var(--spacing-sm);
}

.participation-card {
    text-align: center;
    height: 100%;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.participation-icon {
    margin-bottom: var(--spacing-md);
}

.time-estimate {
    margin-top: var(--spacing-md);
    font-style: italic;
    color: var(--neutral-medium);
}

.join-steps {
    margin: var(--spacing-xl) 0;
}

.join-step {
    display: flex;
    margin-bottom: var(--spacing-lg);
    align-items: flex-start;
}

.step-number {
    background-color: var(--primary-color);
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-right: var(--spacing-md);
    flex-shrink: 0;
}

.step-content {
    flex-grow: 1;
}

.step-content h3 {
    margin-bottom: var(--spacing-sm);
}

.dimension-card, .implication-card, .result-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    height: 100%;
}

.dimension-icon, .implication-icon, .result-icon {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.tool-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    height: 100%;
}

.quote-box {
    background-color: var(--primary-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
    position: relative;
}

.quote-box:before {
    content: '\201C'; /* Opening quotation mark */
    font-size: 5rem;
    color: rgba(74, 137, 220, 0.2);
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: Georgia, serif;
}

.quote {
    font-size: var(--font-size-lg);
    font-style: italic;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.quote-author {
    font-weight: 600;
    text-align: right;
    color: var(--primary-color);
}

.participation-steps {
    margin: var(--spacing-xl) 0;
}

.participation-step {
    display: flex;
    margin-bottom: var(--spacing-lg);
    align-items: flex-start;
}

.dce-example-task {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
    margin: var(--spacing-lg) 0;
}

.dce-option {
    background-color: var(--neutral-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.perspective-box {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.perspective-box h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.study-status-box {
    display: flex;
    align-items: center;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    margin: var(--spacing-lg) 0;
}

.status-icon {
    margin-right: var(--spacing-lg);
    flex-shrink: 0;
}

.status-content {
    flex-grow: 1;
}

.status-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.finding-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.finding-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.progress-charts {
    margin: var(--spacing-lg) 0;
}

.chart-container {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.timeline {
    position: relative;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
}

.timeline:before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-lg);
}

.timeline-marker {
    position: absolute;
    left: 35px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background-color: var(--white);
    transform: translateX(-50%);
}

.timeline-item.completed .timeline-marker {
    background-color: var(--primary-color);
}

.timeline-item.active .timeline-marker {
    background-color: var(--white);
    border-width: 3px;
}

.timeline-content {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.timeline-content h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.publication-list {
    margin-top: var(--spacing-lg);
}

.publication-item {
    display: flex;
    margin-bottom: var(--spacing-lg);
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.publication-icon {
    margin-right: var(--spacing-lg);
    flex-shrink: 0;
}

.publication-content {
    flex-grow: 1;
}

.publication-details {
    color: var(--neutral-medium);
    margin-bottom: var(--spacing-sm);
}

.publication-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.publication-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
}

.future-publication {
    background-color: var(--primary-light);
}

.presenters {
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.authors {
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.media-item {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    height: 100%;
}

.media-date {
    color: var(--neutral-medium);
    margin-bottom: var(--spacing-xs);
}

.media-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.upcoming-events {
    margin-top: var(--spacing-lg);
}

.event-item {
    display: flex;
    margin-bottom: var(--spacing-lg);
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    overflow: hidden;
}

.event-date {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    text-align: center;
}

.event-date .month {
    font-weight: 700;
    font-size: var(--font-size-md);
}

.event-date .day {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1;
    margin: var(--spacing-xs) 0;
}

.event-date .year {
    font-size: var(--font-size-sm);
}

.event-content {
    padding: var(--spacing-lg);
    flex-grow: 1;
}

.event-location {
    color: var(--neutral-medium);
    margin-bottom: var(--spacing-sm);
}

.methodology-box, .key-findings {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.theme-card {
    background-color: var(--primary-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--primary-color);
}

.theme-card h5 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.publication-list-simple {
    list-style-type: none;
    padding-left: 0;
}

.publication-list-simple li {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.publication-list-simple li:last-child {
    border-bottom: none;
}

.map-container {
    height: 500px;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
}

.map-disclaimer {
    font-style: italic;
    color: var(--neutral-medium);
}

.centers-filter {
    margin: var(--spacing-lg) 0;
}

.region-group {
    margin-bottom: var(--spacing-xl);
}

.region-group h3 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.center-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    height: 100%;
}

.center-location {
    color: var(--neutral-medium);
    margin-bottom: var(--spacing-md);
}

.center-details {
    margin-bottom: var(--spacing-md);
}

.center-actions {
    display: flex;
    justify-content: space-between;
}

.online-info-box {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
    margin: var(--spacing-lg) 0;
}

.glossary-section {
    margin-bottom: var(--spacing-xl);
}

.glossary-letter {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.glossary-term {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.glossary-term:last-child {
    border-bottom: none;
}

.glossary-term h3 {
    color: var(--neutral-dark);
    margin-bottom: var(--spacing-sm);
}

.glossary-search, .glossary-filter, .glossary-index {
    margin-bottom: var(--spacing-lg);
}

.index-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.index-link {
    display: inline-block;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border-radius: var(--border-radius-sm);
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-weight: 500;
}

.index-link:hover {
    text-decoration: none;
    background-color: var(--primary-color);
    color: var(--white);
}

.faq-category-section {
    margin-bottom: var(--spacing-xl);
}

.faq-category-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-color);
}

.accordion-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.accordion-button {
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-lg);
}

.accordion-button:not(.collapsed) {
    color: var(--primary-color);
    background-color: var(--primary-light);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(0, 0, 0, 0.1);
}

.accordion-body {
    padding: var(--spacing-lg);
}

.contact-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.contact-icon {
    margin-bottom: var(--spacing-md);
}

.contact-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.social-links-large {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.social-link:hover {
    transform: translateY(-5px);
    text-decoration: none;
    color: var(--primary-dark);
}

.social-link span {
    margin-top: var(--spacing-xs);
}

.online-participation {
    text-align: center;
}

/*--------------------------------------------------------------
7. Forms & Inputs
--------------------------------------------------------------*/
.form-control, .form-select {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(74, 137, 220, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.input-group-text {
    background-color: var(--primary-light);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--primary-color);
}

.no-results-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--neutral-light);
    border-radius: var(--border-radius-md);
    margin: var(--spacing-lg) 0;
}

/*--------------------------------------------------------------
8. Buttons
--------------------------------------------------------------*/
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-lg {
    padding: 1rem 2rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--secondary-dark);
    border-color: var(--secondary-dark);
}

.btn-outline-secondary {
    color: var(--neutral-dark);
    border-color: var(--neutral-dark);
}

.btn-outline-secondary:hover, .btn-outline-secondary:focus {
    background-color: var(--neutral-dark);
    border-color: var(--neutral-dark);
    color: var(--white);
}

.btn-link {
    color: var(--primary-color);
    text-decoration: none;
}

.btn-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.btn-group .btn {
    margin-right: 0;
}

/*--------------------------------------------------------------
9. Footer
--------------------------------------------------------------*/
.footer {
    background-color: var(--neutral-dark);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
    text-decoration: none;
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--white);
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    margin-top: var(--spacing-lg);
}

/*--------------------------------------------------------------
10. Responsive Adjustments
--------------------------------------------------------------*/
@media (max-width: 991.98px) {
    body {
        padding-top: 56px;
    }
    
    h1 {
        font-size: 2.25rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-section {
        text-align: center;
    }
    
    .hero-image {
        margin-top: var(--spacing-lg);
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
    }
    
    .join-step, .participation-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .step-number {
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
    }
    
    .publication-item, .study-status-box {
        flex-direction: column;
        text-align: center;
    }
    
    .publication-icon, .status-icon {
        margin-right: 0;
        margin-bottom: var(--spacing-md);
    }
    
    .timeline:before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-marker {
        left: 20px;
    }
    
    .glossary-filter .btn-group {
        display: flex;
        flex-wrap: wrap;
    }
    
    .glossary-filter .btn {
        flex: 1 0 calc(50% - 0.5rem);
        margin: 0.25rem;
    }
    
    .faq-categories .btn-group {
        display: flex;
        flex-wrap: wrap;
    }
    
    .faq-categories .btn {
        flex: 1 0 calc(50% - 0.5rem);
        margin: 0.25rem;
    }
    
    .event-item {
        flex-direction: column;
    }
    
    .event-date {
        width: 100%;
        padding: var(--spacing-sm);
        flex-direction: row;
        justify-content: center;
    }
    
    .event-date .month, .event-date .day, .event-date .year {
        margin: 0 var(--spacing-xs);
    }
}

@media (max-width: 767.98px) {
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .objective-card, .participation-card, .dimension-card, .implication-card, .result-card {
        margin-bottom: var(--spacing-md);
    }
    
    .social-links-large {
        gap: var(--spacing-md);
    }
}

@media (max-width: 575.98px) {
    .index-links {
        justify-content: center;
    }
    
    .glossary-filter .btn, .faq-categories .btn {
        flex: 1 0 calc(100% - 0.5rem);
    }
}

/*--------------------------------------------------------------
11. Accessibility Features
--------------------------------------------------------------*/
.accessibility-controls {
    position: fixed;
    top: 80px;
    right: 0;
    z-index: 1000;
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    box-shadow: -2px 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    transform: translateX(100%);
}

.accessibility-controls.active {
    transform: translateX(0);
}

.accessibility-toggle {
    position: absolute;
    left: -40px;
    top: 0;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    cursor: pointer;
}

.accessibility-toggle:hover, .accessibility-toggle:focus {
    background-color: var(--primary-dark);
}

.text-size-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.text-size-controls h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.text-size-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.text-size-btn {
    width: 36px;
    height: 36px;
    background-color: var(--neutral-light);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-dark);
}

.text-size-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.text-size-btn:hover, .text-size-btn:focus {
    background-color: var(--primary-light);
}

.text-size-btn.active:hover, .text-size-btn.active:focus {
    background-color: var(--primary-dark);
}

/* Font size modifiers */
html.text-size-small {
    font-size: 14px;
}

html.text-size-medium {
    font-size: 16px;
}

html.text-size-large {
    font-size: 18px;
}

html.text-size-xl {
    font-size: 20px;
}

/*--------------------------------------------------------------
12. Utility Classes
--------------------------------------------------------------*/
.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

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

.mb-0 {
    margin-bottom: 0 !important;
}

.mb-1 {
    margin-bottom: 0.25rem !important;
}

.mb-2 {
    margin-bottom: 0.5rem !important;
}

.mb-3 {
    margin-bottom: 1rem !important;
}

.mb-4 {
    margin-bottom: 1.5rem !important;
}

.mb-5 {
    margin-bottom: 3rem !important;
}

.mt-0 {
    margin-top: 0 !important;
}

.mt-1 {
    margin-top: 0.25rem !important;
}

.mt-2 {
    margin-top: 0.5rem !important;
}

.mt-3 {
    margin-top: 1rem !important;
}

.mt-4 {
    margin-top: 1.5rem !important;
}

.mt-5 {
    margin-top: 3rem !important;
}

.p-0 {
    padding: 0 !important;
}

.p-1 {
    padding: 0.25rem !important;
}

.p-2 {
    padding: 0.5rem !important;
}

.p-3 {
    padding: 1rem !important;
}

.p-4 {
    padding: 1.5rem !important;
}

.p-5 {
    padding: 3rem !important;
}

/*--------------------------------------------------------------
12. Page-Specific Styles
--------------------------------------------------------------*/
/* DCE Examples Page */
.dce-illustration, .patient-illustration, .professional-illustration {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    height: 100%;
}

/* Results Page */
.chart-container canvas {
    max-width: 100%;
}

/* Glossary Page */
.glossary-index .index-links {
    display: flex;
    flex-wrap: wrap;
}

/* FAQ Page */
.accordion-button::after {
    min-width: 1.25em;
    min-height: 1.25em;
}


/* personalizzazioni */
.logo {
    height: 40px;
}


.section-divider {
    height: 3px;
    /*width: 60px;*/
    background-color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.footer {
    /*background-color: var(--neutral-dark);*/
    background-color: #2B65AF;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    color: var(--white);
    padding: var(--spacing-sm) 0 var(--spacing-sm);
    z-index: 1000;
}

.footer img {
    max-height: 80px;
}

@media (max-width: 576px) {
    .footer img {
        max-height: 50px !important;
      padding-top: 5px;
      padding-bottom: 5px;
    }
}

.footer .col-6,
.footer .col-md-3 {
    justify-content: center;
    align-items: center;
    display: flex;
}

.center-logo {
    height: 8em;
    width: auto;
    object-fit: contain;
    vertical-align: middle;
}