:root {
    --primary-color: #022949;
    --primary-dark: #0056b3;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-gray: #f8f9fa;
    --border-gray: #e9ecef;
    --text-muted: #6c757d;
    --navbar-bg: #022949;
    --footer-bg: #2d3748;
    --hero-gradient: linear-gradient(135deg, #022949 0%, #764ba2 100%);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.navbar-custom {
    background-color: var(--navbar-bg);
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.4rem;
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    transform: translateY(-2px);
}

footer {
    background-color: var(--footer-bg);
    color: white;
    margin-top: auto;
}


.hero-gradient {
    background: var(--hero-gradient);
}

.banner-container {
    text-align: center;
    margin: 0px 0;
}

.banner-image {
    max-width: 100%;
    height: auto;
}

.required {
    color: var(--danger-color);
}

.section-header {
    background-color: var(--light-gray);
    border-left: 4px solid var(--primary-color);
    padding: 10px 15px;
    margin: 20px 0 15px 0;
    border-radius: 0 0.25rem 0.25rem 0;
}

.section-header h1,
.section-header h2,
.section-header h3,
.section-header h4,
.section-header h5,
.section-header h6 {
    margin-bottom: 0;
    color: var(--primary-color);
}

.content-section, .form-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--border-gray);
    border-radius: 0.5rem;
    background-color: #fff;
}

.content-section {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.highlight-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
    text-align: center;
}

.highlight-box h1,
.highlight-box h2,
.highlight-box h3,
.highlight-box h4,
.highlight-box h5,
.highlight-box h6 {
    color: white;
    margin-bottom: 0.5rem;
}

.congress-info {
    border-left: 4px solid var(--success-color);
    background-color: var(--light-gray);
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 0 0.25rem 0.25rem 0;
}

.congress-info h5 {
    color: var(--success-color);
    margin-bottom: 0.75rem;
}

.download-link {
    background-color: var(--light-gray);
    border: 2px dashed var(--primary-color);
    padding: 1rem;
    text-align: center;
    border-radius: 0.5rem;
    margin: 1rem 0;
    transition: all 0.3s ease;
}

.download-link:hover {
    background-color: rgba(0, 123, 255, 0.1);
    border-color: var(--primary-dark);
}

.download-link a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: bold;
    transition: color 0.3s ease;
}

.download-link a:hover {
    color: var(--primary-dark);
}

.pricing-table {
    font-size: 0.9rem;
}

.pricing-table th {
    background-color: var(--border-gray);
    color: var(--primary-dark);
    font-weight: 600;
}

.pricing-table td {
    vertical-align: middle;
}

.pricing-table tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.05);
}

.alert-info {
    border-left: 4px solid var(--info-color);
}

.alert-warning {
    border-left: 4px solid var(--warning-color);
}

.alert-success {
    border-left: 4px solid var(--success-color);
}

.card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid var(--border-gray);
    border-radius: 12px;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.card-title {
    font-weight: 600;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
}

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

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
}

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

.jumbotron {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.form-group {
    margin-bottom: 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

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

.fa, .fas, .far, .fal, .fab {
    margin-right: 0.5rem;
}

h1 .fa, h1 .fas, h1 .far, h1 .fal, h1 .fab,
h2 .fa, h2 .fas, h2 .far, h2 .fal, h2 .fab,
h3 .fa, h3 .fas, h3 .far, h3 .fal, h3 .fab,
h4 .fa, h4 .fas, h4 .far, h4 .fal, h4 .fab,
h5 .fa, h5 .fas, h5 .far, h5 .fal, h5 .fab,
h6 .fa, h6 .fas, h6 .far, h6 .fal, h6 .fab {
    margin-right: 0.75rem;
}

.lead {
 font-weight: 500;
    font-size: 1.15rem;
    line-height: 1.6;
    color: var(--text-primary, #212529);
}

.intro-paragraph {
    font-weight: 500;
    font-size: 1.15rem;
    line-height: 1.6;
    color: white;
    margin-bottom: 1.5rem;
}

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

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

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

.hover-lift {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

.bg-opacity-10 {
    --bs-bg-opacity: 0.1;
}

.border-end {
    border-right: 1px solid #dee2e6;
}

.price-card {
    transition: transform 0.3s;
    position: relative;
}

.price-card:hover {
    transform: translateY(-10px);
}

.price-header {
    padding: 30px;
    color: white;
    border-radius: 10px 10px 0 0;
}

.early-bird {
    background: linear-gradient(135deg, #4caf50, #2e7d32);
}

.regular-price {
    background: linear-gradient(135deg, #2196f3, #1565c0);
}

.price-amount {
    font-size: 3rem;
    font-weight: bold;
}




.best-value {
    position: absolute;
    top: -15px;
    right: 20px;
    background: #ff5722;
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-weight: bold;
}

.included-item {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.included-item:last-child {
    border-bottom: none;
}

.optional-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
}

.program-day {
    border-left: 4px solid var(--primary-color);
    margin-bottom: 2rem;
}

.session-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 1rem;
    position: relative;
}

.session-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.session-plenary {
    border-left: 4px solid #dc3545;
    background: linear-gradient(90deg, rgba(220, 53, 69, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-parallel {
    border-left: 4px solid #28a745;
    background: linear-gradient(90deg, rgba(40, 167, 69, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-workshop {
    border-left: 4px solid #ffc107;
    background: linear-gradient(90deg, rgba(255, 193, 7, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-break {
    border-left: 4px solid #6c757d;
    background-color: #f8f9fa;
}

.session-social {
    border-left: 4px solid #17a2b8;
    background: linear-gradient(90deg, rgba(23, 162, 184, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-ceremony {
    border-left: 4px solid #6f42c1;
    background: linear-gradient(90deg, rgba(111, 66, 193, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-poster {
    border-left: 4px solid #fd7e14;
    background: linear-gradient(90deg, rgba(253, 126, 20, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-roundtable {
    border-left: 4px solid #20c997;
    background: linear-gradient(90deg, rgba(32, 201, 151, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.session-visit {
    border-left: 4px solid #007bff;
    background: linear-gradient(90deg, rgba(0, 123, 255, 0.1) 0%, rgba(255, 255, 255, 1) 100%);
}

.time-badge {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem;
    border-radius: 0.375rem;
    display: inline-block;
    min-width: 100px;
    text-align: center;
}

.parallel-sessions {
    background-color: rgba(40, 167, 69, 0.05);
    border-radius: 0.25rem;
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.workshop-sessions {
    background-color: rgba(255, 193, 7, 0.05);
    border-radius: 0.25rem;
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.session-icon {
    width: 20px;
    text-align: center;
}

.nav-pills .nav-link {
    border-radius: 2rem;
    margin: 0 0.25rem;
    font-weight: 500;
}

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

 .large-select {
        height: auto; /* Permet à la liste de s'agrandir en fonction du nombre d'options */
        min-height: 200px; /* Définit une hauteur minimale */
        width: 100%; /* Assure que la liste prend toute la largeur de son conteneur */
        padding: 10px; /* Ajoute un peu d'espace à l'intérieur de la liste */
        font-size: 16px; /* Augmente la taille de la police pour une meilleure lisibilité */
    }

.timeline-item {
    margin-bottom: 1.5rem;
}

    
    .theme-card {
        transition: all 0.3s;
        cursor: pointer;
    }
    
    .theme-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        background-color: #e3f2fd;
    }
    
    .type-card {
        border-top: 5px solid;
    }
    
    .type-article {
        border-color: #dc3545;
    }
    
    .type-wip {
        border-color: #ffc107;
    }
    
    .type-poster {
        border-color: #17a2b8;
    }
    
    @media (max-width: 768px) {
        .timeline::before {
            left: 30px;
        }
        
        .timeline-item::before {
            left: 30px;
        }
        
        .timeline-content {
            width: calc(100% - 60px);
            margin-left: 60px !important;
        }
    }

.day-header {
    text-align: center;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
}

.bg-purple {
    background-color: #9c27b0 !important;
}

.text-purple {
    color: #9c27b0 !important;
}

.bg-teal {
    background-color: #20c997 !important;
}

a {
    color: var(--primary-color);
    transition: color 0.3s ease;
}

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

.is-valid {
    border-color: var(--success-color);
}

.is-invalid {
    border-color: var(--danger-color);
}

.valid-feedback {
    color: var(--success-color);
}

.invalid-feedback {
    color: var(--danger-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-section,
.form-section {
    animation: fadeIn 0.5s ease-out;
}

.btn:focus,
.form-control:focus,
.form-check-input:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

@media (max-width: 768px) {
    .section-header {
        padding: 8px 12px;
        margin: 15px 0 10px 0;
    }

    .content-section,
    .form-section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }

    .highlight-box {
        padding: 1rem;
        margin: 1rem 0;
    }

    .pricing-table {
        font-size: 0.8rem;
    }
}

    .venue-card {
        transition: transform 0.3s;
    }
    
    .venue-card:hover {
        transform: translateY(-5px);
    }
    
    .hotel-card {
        border-left: 4px solid #ffc107;
    }
    
    .transport-icon {
        font-size: 3rem;
        margin-bottom: 15px;
    }
    
    #map {
        height: 500px;
        border-radius: 10px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    }
    
    .star-rating {
        color: #ffc107;
    }

        .thematique-item {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 10px;
            transition: all 0.2s;
        }
        .thematique-item:hover {
            background-color: #f8f9fa;
        }
        .thematique-item.selected {
            border-color: #0d6efd;
            background-color: #e7f3ff;
        }
        .thematique-badge {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }
        .form-check-input:checked + .form-check-label .thematique-item {
            border-color: #0d6efd;
            background-color: #e7f3ff;
        }