:root {
            --primary-color: #2c3e50;
            --secondary-color: #e74c3c;
            --accent-color: #e74c3c;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Poppins', sans-serif;
            margin: 0;
            background-color: #f8f9fa;
            line-height: 1.6;
            color: #333;
        }

        .header-banner {
            max-width: 50%;
            height: auto;
            max-height: 700px;
            display: block;
            margin: 0 auto;
            animation: fadeIn 1s ease-in;
            box-shadow: 0 8px 30px rgba(44, 62, 80, 0.15);
            border: 1px solid rgba(44, 62, 80, 0.1);
            transform: translateZ(0);
        }

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

        .title-section {
            text-align: center;
            margin: 2rem 0;
        }

        .main-title {
            color: var(--primary-color);
            font-size: clamp(1.8rem, 5vw, 2.5rem);
            margin-bottom: 1rem;
            text-transform: uppercase;
            line-height: 1.2;
            font-weight: 700;
            animation: fadeInUp 0.8s ease-out;
        }

        .subtitle {
            color: var(--accent-color);
            font-size: clamp(1.9rem, 5vw, 2.8rem);
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 1rem;
            display: inline-block;
            font-weight: 600;
            animation: fadeInUp 1s ease-out;
        }

        .logo-container {
            text-align: center;
            margin: 2rem 0;
            animation: slideUp 0.8s ease-out;
        }

        .logo {
            max-width: min(300px, 100%);
            height: auto;
            transition: transform 0.3s ease;
            filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.1));
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .form-container {
            background: white;
            border-radius: 15px;
            padding: clamp(1.5rem, 5vw, 3rem);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin: 2rem auto;
            position: relative;
        }

        .form-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(to bottom, var(--secondary-color), var(--accent-color));
            border-top-left-radius: 15px;
            border-bottom-left-radius: 15px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(calc(100% - 0.6rem), 1fr));
            gap: 1rem;
        }

        .form-group {
            margin-bottom: 0.4rem;
            opacity: 0;
            transform: translateY(20px);
            animation: formEnter 0.5s ease forwards;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--primary-color);
            font-weight: 600;
            position: relative;
            font-size: 0.95rem;
        }

        .form-label b[style*="red"] {
            margin-left: 4px;
            font-weight: 400;
            color: var(--accent-color);
        }

        .forum-selection {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            border: 2px solid #dee2e6;
            margin-bottom: 2rem;
        }

        .forum-selection h3 {
            color: var(--primary-color);
            font-size: 1.2rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .forum-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
        }

        .forum-checkbox {
            display: flex;
            align-items: flex-start;
            padding: 1rem;
            background: white;
            border-radius: 8px;
            border: 2px solid #dee2e6;
            transition: var(--transition);
            cursor: pointer;
        }

        .forum-checkbox:hover {
            border-color: var(--accent-color);
            box-shadow: 0 3px 10px rgba(231, 76, 60, 0.1);
        }

        .forum-checkbox input[type="checkbox"] {
            width: 20px;
            height: 20px;
            margin-right: 12px;
            cursor: pointer;
            accent-color: var(--accent-color);
        }

        .forum-info {
            flex: 1;
        }

        .forum-name {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 4px;
        }

        .forum-date {
            font-size: 0.85rem;
            color: #6c757d;
        }

        .submit-btn {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.8rem;
            margin: 2rem auto 0;
            width: 100%;
            max-width: 300px;
            position: relative;
            overflow: hidden;
        }

        .submit-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: 0.5s;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
            opacity: 0.95;
        }

        .submit-btn:hover::before {
            left: 100%;
        }

        .submit-btn:active {
            transform: translateY(0);
        }

        .submit-btn i {
            transition: transform 0.3s ease;
        }

        .submit-btn:hover i {
            transform: translateX(5px);
        }

        #autre_domaine {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, opacity 0.2s ease;
            opacity: 0;
        }

        #autre_domaine.visible {
            max-height: 100px;
            opacity: 1;
        }

        #participation_details {
            display: none;
            margin-top: 1rem;
            padding: 1rem;
            background: #f8f9fa;
            border-radius: 8px;
            border: 2px solid #dee2e6;
        }

        #participation_details.visible {
            display: block;
        }

        .participation-entry {
            display: grid;
            grid-template-columns: 1fr 1fr auto;
            gap: 1rem;
            margin-bottom: 1rem;
            align-items: end;
        }

        .btn-remove {
            background: #dc3545;
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-remove:hover {
            background: #c82333;
        }

        .btn-add {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.5rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        .alert {
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            font-weight: 500;
            animation: fadeIn 0.5s ease-in;
        }

        .modal-content {
            border-radius: 15px;
            border: none;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
        }

        .modal-header {
            background: linear-gradient(135deg, var(--secondary-color), #c0392b);
            color: white;
            border-top-left-radius: 15px;
            border-top-right-radius: 15px;
            border-bottom: none;
            padding: 1.5rem;
        }

        .modal-header .btn-close {
            filter: brightness(0) invert(1);
        }

        .modal-title {
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .modal-body {
            padding: 2rem;
            font-size: 1.05rem;
            color: #333;
        }

        .modal-footer {
            border-top: none;
            padding: 1rem 2rem 1.5rem;
        }

        .modal-footer .btn {
            padding: 0.7rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }

        .modal-footer .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border: none;
        }

        .modal-footer .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(231, 76, 60, 0.3);
        }

        @media (max-width: 768px) {
            .forum-options {
                grid-template-columns: 1fr;
            }
            
            .forum-checkbox {
                padding: 0.8rem;
            }
            
            .header-banner {
                max-width: 100%;
                padding: 0 1rem;
            }
            
            .main-container {
                padding: 1rem;
            }
            
            .form-container {
                padding: 1.5rem;
            }
            
            .date-input {
                min-height: 48px;
                font-size: 16px;
            }
            
            input[type="date"]::-webkit-calendar-picker-indicator {
                font-size: 1.2rem;
                padding: 8px;
            }
            
            .participation-entry {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }
            
            .btn-remove {
                width: 100%;
            }
            
            .forum-selection {
                padding: 1rem;
            }
            
            .forum-selection h3 {
                font-size: 1rem;
            }
            
            .forum-selection p {
                font-size: 0.85rem;
            }
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

         /* Style supplémentaire pour la modal d'erreur */
    #cvErrorModal .modal-header {
        border-bottom: 2px solid #dc3545;
    }
    
    #cvErrorModal .modal-body {
        padding: 1.5rem;
        font-size: 1rem;
    }
    
    #cvErrorModal .text-danger {
        margin-right: 0.5rem;
    }
    
    #cvErrorText {
        font-weight: 500;
    }