:root {
            --blue-light: #e3f2fd;
            --blue-border: #64b5f6;
            --blue-dark: #0d47a1;
            --green-light: #e8f5e9;
            --green-border: #81c784;
            --green-dark: #1b5e20;
            --orange-light: #fff3e0;
            --orange-border: #ffb74d;
            --orange-dark: #e65100;
            --red-light: #ffebee;
            --red-border: #ef5350;
            --red-dark: #b71c1c;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html, body {
            min-height: 100%;
        }
        
        body {
            font-family: 'Comic Sans MS', 'Segoe UI', sans-serif;
            background: #fafafa;
            color: #333;
            padding: 2vh 2vw;
            font-size: calc(14px + 0.3vw);
            line-height: 1.5;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }
        
        .page {
            background: white;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            padding: clamp(20px, 4vw, 40px);
            max-width: 700px;
            width: 100%;
        }
        
        /* En-tête */
        .header {
            background: var(--blue-light);
            border: 2px solid var(--blue-border);
            padding: clamp(15px, 3vw, 25px);
            text-align: center;
            margin-bottom: clamp(15px, 3vw, 25px);
        }
        
        .header h1 {
            color: var(--blue-dark);
            font-size: clamp(1.3em, 4vw, 1.8em);
            margin-bottom: 5px;
        }
        
        .header .subtitle {
            color: var(--blue-dark);
            font-size: clamp(0.85em, 2vw, 1em);
            opacity: 0.9;
        }
        
        /* Section info */
        .info-section {
            background: var(--orange-light);
            border: 2px solid var(--orange-border);
            padding: clamp(15px, 3vw, 25px);
            margin-bottom: clamp(15px, 3vw, 25px);
            text-align: center;
        }
        
        .info-section .icon {
            font-size: clamp(2.5em, 6vw, 3.5em);
            margin-bottom: 10px;
        }
        
        .info-section h2 {
            color: var(--orange-dark);
            font-size: clamp(1em, 2.5vw, 1.3em);
            margin-bottom: 15px;
        }
        
        .info-section p {
            font-size: clamp(0.9em, 2vw, 1.05em);
            margin-bottom: 10px;
            color: #555;
        }
        
        /* Formulaire */
        .form-section {
            background: white;
            border: 2px solid var(--blue-border);
            padding: clamp(15px, 3vw, 25px);
            margin-bottom: clamp(15px, 3vw, 25px);
        }
        
        .form-section h3 {
            color: var(--blue-dark);
            font-size: clamp(1em, 2.5vw, 1.2em);
            margin-bottom: 15px;
            text-align: center;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--blue-border);
        }
        
        .form-group {
            margin-bottom: 15px;
        }
        
        .form-group label {
            display: block;
            color: var(--blue-dark);
            font-weight: bold;
            margin-bottom: 5px;
            font-size: clamp(0.9em, 2vw, 1em);
        }
        
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: clamp(10px, 2vw, 15px);
            border: 2px solid var(--blue-border);
            font-family: inherit;
            font-size: clamp(0.9em, 2vw, 1em);
            transition: border-color 0.3s;
        }
        
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--blue-dark);
        }
        
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #aaa;
        }
        
        .btn-submit {
            width: 100%;
            padding: clamp(12px, 2.5vw, 18px);
            background: var(--blue-light);
            border: 2px solid var(--blue-dark);
            color: var(--blue-dark);
            font-family: inherit;
            font-size: clamp(1em, 2.5vw, 1.2em);
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .btn-submit:hover {
            background: var(--blue-dark);
            color: white;
        }
        
        .btn-submit:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        
        /* Messages de feedback */
        .feedback {
            padding: clamp(12px, 2vw, 18px);
            margin-top: 15px;
            text-align: center;
            font-weight: bold;
            display: none;
        }
        
        .feedback.success {
            background: var(--green-light);
            border: 2px solid var(--green-border);
            color: var(--green-dark);
            display: block;
        }
        
        .feedback.error {
            background: var(--red-light);
            border: 2px solid var(--red-border);
            color: var(--red-dark);
            display: block;
        }
        
        .feedback.loading {
            background: var(--orange-light);
            border: 2px solid var(--orange-border);
            color: var(--orange-dark);
            display: block;
        }
        
        /* Spinner */
        .spinner {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(0,0,0,0.2);
            border-radius: 50%;
            border-top-color: var(--orange-dark);
            animation: spin 1s linear infinite;
            margin-right: 10px;
            vertical-align: middle;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        /* Liens */
        .links-section {
            display: flex;
            flex-direction: column;
            gap: clamp(10px, 2vw, 15px);
        }
        
        .link-box {
            padding: clamp(15px, 3vw, 20px);
            border: 2px solid;
            text-align: center;
            text-decoration: none;
            transition: all 0.3s;
            display: block;
        }
        
        .link-box:hover {
            transform: translateY(-3px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        
        .link-public {
            background: var(--green-light);
            border-color: var(--green-border);
        }
        
        .link-public .icon {
            font-size: clamp(1.8em, 4vw, 2.5em);
            margin-bottom: 8px;
        }
        
        .link-public h3 {
            color: var(--green-dark);
            font-size: clamp(1em, 2.5vw, 1.2em);
            margin-bottom: 5px;
        }
        
        .link-public p {
            color: var(--green-dark);
            font-size: clamp(0.8em, 1.8vw, 0.95em);
            opacity: 0.8;
        }
        
        .link-presentation {
            background: var(--blue-light);
            border-color: var(--blue-border);
        }
        
        .link-presentation .icon {
            font-size: clamp(1.8em, 4vw, 2.5em);
            margin-bottom: 8px;
        }
        
        .link-presentation h3 {
            color: var(--blue-dark);
            font-size: clamp(1em, 2.5vw, 1.2em);
            margin-bottom: 5px;
        }
        
        .link-presentation p {
            color: var(--blue-dark);
            font-size: clamp(0.8em, 1.8vw, 0.95em);
            opacity: 0.8;
        }
        
        /* Footer */
        .footer {
            margin-top: clamp(15px, 3vw, 25px);
            text-align: center;
            font-size: clamp(0.75em, 1.5vw, 0.9em);
            color: #999;
        }
        
        .footer a {
            color: var(--blue-dark);
            text-decoration: none;
        }
        
        .footer a:hover {
            text-decoration: underline;
        }
        
        /* Masquer le formulaire après envoi */
        .form-hidden {
            display: none;
        }
        
        /* Message de succès final */
        .success-message {
            text-align: center;
            padding: 20px;
        }
        
        .success-message .icon {
            font-size: 3em;
            margin-bottom: 10px;
        }