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

        :root {
            --primary: #1F3D67;
            --primary-dark: #162d4c;
            --secondary: #FF9926;
            --secondary-light: #ffb45c;
            --white: #FFFFFF;
            --light: #F5F7FA;
            --border: #E4EAF1;
            --text: #1B2430;
            --text-light: #5F6B7A;
            --shadow: 0 20px 35px -10px rgba(0,0,0,0.05);
            --shadow-hover: 0 25px 40px -12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            background: var(--light);
            color: var(--text);
        }

        /* HERO */
        .page-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 3rem 1.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 10% 20%, rgba(255,153,38,0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero h1 {
            font-size: clamp(2rem, 5vw, 2.8rem);
            font-weight: 800;
            background: linear-gradient(135deg, #ffffff, var(--secondary-light));
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 0.5rem;
        }
        .page-hero p {
            color: rgba(255,255,255,0.85);
            font-size: 1rem;
            max-width: 700px;
            margin: 0 auto;
        }

        /* CONTENEUR PRINCIPAL */
        .main-flex {
            max-width: 1280px;
            margin: 2rem auto;
            padding: 0 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
        }

        /* FORMULAIRE */
        .preinscription {
            background: var(--white);
            border-radius: 10px;
            padding: 2rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            flex: 2;
        }
        .preinscription:hover {
            box-shadow: var(--shadow-hover);
        }
        .preinscription h2 {
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .preinscription h2 i {
            color: var(--secondary);
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: var(--primary);
        }
        .input-icon {
            position: relative;
        }
        .input-icon i {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--secondary);
            font-size: 1rem;
            pointer-events: none;
        }
        .input-icon input,
        .input-icon select,
        .input-icon textarea {
            width: 100%;
            padding: 0.8rem 1rem 0.8rem 2.5rem;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-family: inherit;
            font-size: 0.9rem;
            transition: var(--transition);
            background: var(--white);
        }
        .input-icon textarea {
            padding-top: 0.8rem;
            resize: vertical;
        }
        .input-icon input:focus,
        .input-icon select:focus,
        .input-icon textarea:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(255,153,38,0.2);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: linear-gradient(105deg, var(--primary), var(--secondary));
            color: var(--white);
            padding: 0.7rem 1.8rem;
            border-radius: 10px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            margin-top: 0.5rem;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px -5px rgba(31,61,103,0.4);
            gap: 0.8rem;
        }
        .form-response {
            margin-top: 1rem;
            padding: 0.8rem;
            border-radius: 10px;
            display: none;
            font-size: 0.9rem;
        }
        .form-response.success {
            background: #dcfce7;
            color: #166534;
            border: 1px solid #bbf7d0;
            display: block;
        }
        .form-response.error {
            background: #fee2e2;
            color: #991b1b;
            border: 1px solid #fecaca;
            display: block;
        }

        /* BLOC INFORMATIONS (formations) */
        .info-block {
            flex: 1;
            background: var(--white);
            border-radius: 10p;
            padding: 1.5rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            height: fit-content;
        }
        .info-block h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .info-block h3 i {
            color: var(--secondary);
        }
        .info-block .formation-list {
            list-style: none;
            margin-top: 1rem;
        }
        .info-block .formation-list li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }
        .info-block .formation-list li i {
            color: var(--secondary);
            width: 24px;
        }
        .info-block .badge {
            background: rgba(31,61,103,0.08);
            color: var(--primary);
            padding: 0.2rem 0.7rem;
            border-radius: 10px;
            font-size: 0.7rem;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        .info-note {
            margin-top: 1rem;
            padding: 1rem;
            background: rgba(255,153,38,0.08);
            border-radius: 10px;
            font-size: 0.85rem;
            color: var(--text-light);
            border-left: 3px solid var(--secondary);
        }

       

        /* RESPONSIVE */
        @media (max-width: 900px) {
            .main-flex {
                flex-direction: column;
            }
            .preinscription, .info-block {
                flex: auto;
            }
        }
        @media (max-width: 550px) {
            .preinscription {
                padding: 1.5rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }