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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #2C3E50;
            background: #F8F9FA;
        }

        header {
            background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
            color: white;
            padding: 2rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
        }

        header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            animation: float 15s infinite ease-in-out;
        }

        @keyframes float {

            0%,
            100% {
                transform: translate(0, 0) scale(1);
            }

            50% {
                transform: translate(-30px, 30px) scale(1.1);
            }
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        header h1 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            animation: slideInDown 0.8s ease-out;
        }

        header p {
            font-size: 1.2rem;
            opacity: 0.9;
            animation: slideInUp 0.8s ease-out;
        }

        @keyframes slideInDown {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        nav {
            background: #2C3E50;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
        }

        .nav-toggle {
            display: block;
            background: none;
            border: none;
            color: white;
            padding: 1rem;
            cursor: pointer;
            width: auto;
            position: relative;
            z-index: 101;
            transition: background 0.3s;
        }

        .nav-toggle span:first-child {
            display: none;
        }

        .nav-toggle:hover {
            background: #34495E;
        }

                .menu-icon {
            display: inline-block;
            width: 24px;
            height: 20px;
            position: relative;
        }

        .menu-icon {
            display: inline-block;
            width: 24px;
            height: 20px;
            position: relative;
        }

        .menu-icon span {
            display: block;
            position: absolute;
            height: 3px;
            width: 100%;
            background: white;
            border-radius: 2px;
            opacity: 1;
            left: 0;
            transition: .25s ease-in-out;
        }

        .menu-icon span:nth-child(1) {
            top: 0px;
        }

        .menu-icon span:nth-child(2) {
            top: 8px;
        }

        .menu-icon span:nth-child(3) {
            top: 16px;
        }

        .menu-icon.open span:nth-child(1) {
            top: 8px;
            transform: rotate(135deg);
        }

        .menu-icon.open span:nth-child(2) {
            opacity: 0;
            left: -60px;
        }

        .menu-icon.open span:nth-child(3) {
            top: 8px;
            transform: rotate(-135deg);
        }

        .nav-toggle {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        

        nav ul {
            position: fixed;
            top: 60px;
            left: -100%;
            width: 280px;
            height: calc(100vh - 60px);
            background: #2C3E50;
            list-style: none;
            display: block;
            flex-direction: column;
            padding-top: 1rem;
            transition: left 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            box-shadow: 5px 0 15px rgba(0, 0, 0, 0.3);
            overflow-y: auto;
        }

        nav ul.open {
            left: 0;
        }

        nav li {
            margin: 0;
        }

        nav a {
            display: block;
            padding: 1rem 1.5rem;
            color: white;
            text-decoration: none;
            transition: all 0.3s;
            border-top: 1px solid #34495E;
            position: relative;
            overflow: hidden;
        }

        nav a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 3px;
            background: #0066CC;
            transform: scaleY(0);
            transition: transform 0.3s ease;
        }

        nav a:hover::before,
        nav a.active::before {
            transform: scaleY(1);
        }

        nav a:hover,
        nav a.active {
            background: #34495E;
            padding-left: 2rem;
        }

        nav ul.open::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0, 0, 0, 0.5);
            z-index: -1;
        }

        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
        }

        .section {
            display: none;
            animation: fadeIn 0.5s;
        }

        .section.active {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        h2 {
            color: #0066CC;
            font-size: 2rem;
            margin-bottom: 1.5rem;
            border-bottom: 3px solid #0066CC;
            padding-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 0;
            height: 3px;
            background: #27AE60;
            transition: width 0.6s ease;
        }

        .section.active h2::after {
            width: 100%;
        }

        h3 {
            color: #2C3E50;
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        p {
            margin-bottom: 1rem;
        }

        #accueil .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        #accueil .info-card {
            background: #ECF0F1;
            padding: 1.5rem;
            border-left: 4px solid #0066CC;
            border-radius: 8px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            overflow: hidden;
        }

        #accueil .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
            transition: left 0.6s;
        }

        #accueil .info-card:hover::before {
            left: 100%;
        }

        #accueil .info-card:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 10px 30px rgba(0, 102, 204, 0.2);
            border-left-width: 6px;
        }

        #programme .schedule-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 1rem;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        #programme .schedule-table th {
            background: #003D7A;
            color: #fff;
            padding: 1rem;
            text-align: left;
            font-weight: 600;
        }

        #programme .schedule-table td {
            padding: 1rem;
            border-bottom: 1px solid #ECF0F1;
            transition: all 0.3s;
        }

        #programme .schedule-table tbody tr {
            transition: all 0.3s;
        }

        #programme .schedule-table tbody tr:hover {
            background: #E8F4F8;
            transform: scale(1.01);
        }

        #programme .schedule-table tbody tr:last-child td {
            border-bottom: none;
        }

        #programme .speaker-card {
            background: #fff;
            padding: 1.5rem;
            border-top: 3px solid #27AE60;
            margin-top: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            transition: all 0.4s ease;
            position: relative;
        }

        #programme .speaker-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #0066CC;
            transition: width 0.4s ease;
        }

        #programme .speaker-card:hover::after {
            width: 100%;
        }

        #programme .speaker-card:hover {
            transform: translateX(10px);
            box-shadow: -5px 5px 20px rgba(0, 0, 0, 0.15);
        }

        #programme .speaker-card h3 {
            color: #27AE60;
            margin-bottom: 0.5rem;
        }

        #programme .speaker-card p strong {
            color: #0066CC;
        }

        #infos-pratiques .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        #infos-pratiques .info-card {
            background: #ECF0F1;
            padding: 1.25rem;
            border-radius: 8px;
            border-left: 4px solid #0066CC;
            transition: all 0.3s;
        }

        #infos-pratiques .info-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        #infos-pratiques .info-card h3 {
            margin-bottom: 0.5rem;
        }

        #infos-pratiques .map-container {
            margin-top: 2rem;
            border: 2px solid #0066CC;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
            transition: all 0.3s;
        }

        #infos-pratiques .map-container:hover {
            box-shadow: 0 8px 25px rgba(0, 102, 204, 0.2);
            transform: scale(1.01);
        }

        #infos-pratiques h3 {
            margin-top: 2.5rem;
            margin-bottom: 1rem;
        }

        #infos-pratiques p {
            margin-bottom: 0.75rem;
        }

        #inscription .form {
            max-width: 700px;
            margin: 2rem auto;
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        #inscription .form-group {
            margin-bottom: 1.2rem;
        }

        #inscription label {
            font-weight: bold;
            margin-bottom: 0.4rem;
            display: block;
            color: #2C3E50;
        }

        #inscription .required {
            color: #E74C3C;
        }

        #inscription input,
        #inscription textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #7F8C8D;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: all 0.3s;
        }

        #inscription input:focus,
        #inscription textarea:focus {
            border-color: #0066CC;
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
            transform: translateY(-2px);
        }

        #inscription textarea {
            resize: vertical;
            min-height: 100px;
        }

        #inscription .checkbox-group {
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }

        #inscription .checkbox-group input[type="checkbox"] {
            width: auto;
            margin-top: 0.25rem;
        }

        #inscription .checkbox-group label {
            font-weight: normal;
            margin-bottom: 0;
        }

        #inscription .checkbox-group a {
            color: #0066CC;
            text-decoration: none;
            transition: color 0.3s;
        }

        #inscription .checkbox-group a:hover {
            text-decoration: underline;
            color: #004C99;
        }

        #inscription .cta-button {
            background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        #inscription .cta-button::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        #inscription .cta-button:hover::before {
            width: 300px;
            height: 300px;
        }

        #inscription .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 102, 204, 0.3);
        }

        #inscription .cta-button:active {
            transform: translateY(-1px);
        }

        #inscription .form-message {
            display: none;
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 1.5rem;
            font-weight: bold;
            animation: slideInDown 0.5s ease;
        }

        #inscription .form-message.success {
            display: block;
            background: #27AE60;
            color: #fff;
        }

        #inscription .form-message.error {
            display: block;
            background: #E74C3C;
            color: #fff;
        }

        #equipe .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }

        #equipe .team-member {
            text-align: center;
            background: linear-gradient(135deg, #ECF0F1 0%, #E0E6E8 100%);
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            overflow: hidden;
        }

        #equipe .team-member::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
            transform: scale(0);
            transition: transform 0.6s ease;
        }

        #equipe .team-member:hover::before {
            transform: scale(1);
        }

        #equipe .team-member:hover {
            transform: translateY(-10px) scale(1.05);
            box-shadow: 0 12px 30px rgba(0, 61, 122, 0.2);
        }

        #equipe .team-member h3 {
            margin-bottom: 0.5rem;
            color: #003D7A;
            font-size: 1.2rem;
            position: relative;
            z-index: 1;
        }

        #equipe .team-member p {
            color: #7F8C8D;
            font-style: italic;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }

        #equipe .encadrement {
            margin-top: 2rem;
            text-align: center;
            font-size: 1.1rem;
            padding: 1rem;
            background: #E8F4F8;
            border-radius: 8px;
        }

        /* Section Partenaires */
        #partenaires .partner-logos {
            margin-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }

        #partenaires .partner-logo {
            background: #ECF0F1;
            padding: 2rem;
            border-radius: 8px;
            width: 180px;
            height: 110px;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            font-weight: bold;
            color: #7F8C8D;
        }

        #partenaires .partner-logo:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
        }

        #partenaires h3 {
            margin-top: 3rem;
            text-align: center;
        }

        #partenaires p {
            text-align: center;
        }

        #partenaires .cta-button {
            display: inline-block;
            background: #0066CC;
            color: white;
            padding: 1rem 2rem;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            margin: 1rem auto;
            transition: background 0.3s, transform 0.2s;
            text-align: center;
        }

        #partenaires .cta-button:hover {
            background: #004C99;
            transform: translateY(-2px);
        }

        #partenaires>.cta-button {
            display: block;
            width: fit-content;
            margin-left: auto;
            margin-right: auto;
        }

        #contact .form-contact {
            max-width: 600px;
            margin: 2rem auto;
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        #contact .form-group {
            margin-bottom: 1.2rem;
        }

        #contact label {
            font-weight: bold;
            display: block;
            margin-bottom: 0.4rem;
            color: #2C3E50;
        }

        #contact input,
        #contact textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #7F8C8D;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: all 0.3s;
        }

        #contact input:focus,
        #contact textarea:focus {
            border-color: #0066CC;
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
            transform: translateY(-2px);
        }

        #contact textarea {
            resize: vertical;
            min-height: 120px;
        }

        #contact .cta-button {
            background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        #contact .cta-button::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        #contact .cta-button:hover::before {
            width: 300px;
            height: 300px;
        }

        #contact .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 102, 204, 0.3);
        }

        #contact .cta-button:active {
            transform: translateY(-1px);
        }

        #admin .admin-section {
            background: #ECF0F1;
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 2rem;
        }

        #admin .registrations-table {
            width: 100%;
            border-collapse: collapse;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        #admin .registrations-table th {
            background: #003D7A;
            color: #fff;
            padding: 0.75rem;
            text-align: left;
            font-weight: 600;
        }

        #admin .registrations-table td {
            padding: 0.75rem;
            border-bottom: 1px solid #BDC3C7;
            transition: background 0.3s;
        }

        #admin .registrations-table tbody tr {
            transition: all 0.3s;
        }

        #admin .registrations-table tbody tr:hover {
            background: #E8F4F8;
            transform: scale(1.01);
        }

        #admin .registrations-table tbody tr:last-child td {
            border-bottom: none;
        }

        #admin .delete-btn {
            background: #E74C3C;
            color: white;
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s;
        }

        #admin .delete-btn:hover {
            background: #C0392B;
            transform: scale(1.05);
            box-shadow: 0 4px 10px rgba(231, 76, 60, 0.3);
        }

        #admin .empty-state {
            text-align: center;
            padding: 2rem;
            color: #7F8C8D;
            font-style: italic;
        }


        /* Section Administration */
        #admin .admin-login {
            max-width: 500px;
            margin: 2rem auto;
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        #admin .admin-login p {
            text-align: center;
            margin-bottom: 1.5rem;
            color: #7F8C8D;
        }

        #admin .login-error {
            color: #E74C3C;
            text-align: center;
            margin-top: 1rem;
            font-weight: bold;
        }

        #admin .logout-btn {
            background: #E74C3C;
            color: white;
            padding: 0.5rem 1.5rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            margin-bottom: 1.5rem;
            transition: background 0.3s;
        }

        #admin .logout-btn:hover {
            background: #C0392B;
        }

        footer {
            background: #2C3E50;
            color: white;
            text-align: center;
            padding: 2rem;
            margin-top: 4rem;
        }

        @media (max-width: 768px) {
            header h1 {
                font-size: 1.8rem;
            }
        }