:root {
        --primary: #0052FF;
        --primary-dark: #003dcc;
        --secondary: #10B981;
        --danger: #EF4444;
        --dark: #0A0B0D;
        --gray: #6B7280;
        --light: #F5F7FA;
        --white: #FFFFFF;
        --radius: 8px;
        --shadow: 0 2px 8px rgba(0,0,0,0.1);
        --border: #E5E7EB;
    }
    
    .register-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 2rem 1rem;
    }
    
    .register-header {
        text-align: center;
        margin-bottom: 3rem;
    }
    
    .register-header h1 {
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 1rem;
    }
    
    .register-header p {
        font-size: 1.1rem;
        color: var(--gray);
        max-width: 600px;
        margin: 0 auto;
    }
    
    .register-card {
        background: var(--white);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 2rem;
        max-width: 600px;
        margin: 0 auto 3rem;
    }
    
    .register-form {
        margin-bottom: 1.5rem;
    }
    
    .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
        margin-bottom: 1rem;
    }
    
    .form-group {
        margin-bottom: 1.5rem;
    }
    
    .form-group label {
        display: block;
        font-weight: 500;
        margin-bottom: 0.5rem;
        color: var(--dark);
    }
    
    .form-group input {
        width: 100%;
        padding: 0.75rem 1rem;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        font-size: 1rem;
        transition: border-color 0.2s;
    }
    
    .form-group input:focus {
        border-color: var(--primary);
        outline: none;
        box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
    }
    
    .phone-input-group {
        display: flex;
        gap: 0.5rem;
    }
    
    .country-select {
        min-width: 120px;
        padding: 0.75rem;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        font-size: 1rem;
        background: var(--white);
        cursor: pointer;
        transition: border-color 0.2s;
    }
    
    .country-select:focus {
        border-color: var(--primary);
        outline: none;
        box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
    }
    
    .form-group small {
        display: block;
        margin-top: 0.5rem;
        color: var(--gray);
        font-size: 0.8rem;
    }
    
    .checkbox-group {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .checkbox-item {
        display: flex;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .checkbox-item input[type="checkbox"] {
        margin-top: 0.25rem;
    }
    
    .checkbox-item label {
        color: var(--dark);
        line-height: 1.4;
    }
    
    .checkbox-item a {
        color: var(--primary);
        text-decoration: none;
    }
    
    .checkbox-item a:hover {
        text-decoration: underline;
    }
    
    .form-actions {
        margin-top: 2rem;
    }
    
    .btn-large {
        padding: 1rem 2rem;
        font-size: 1.1rem;
        width: 100%;
    }
    
    .btn-primary {
        background: var(--primary);
        color: var(--white);
        border: none;
        padding: 0.75rem 1.5rem;
        border-radius: var(--radius);
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: background 0.2s;
        text-decoration: none;
        display: inline-block;
    }
    
    .btn-primary:hover {
        background: var(--primary-dark);
    }
    
    .register-footer {
        text-align: center;
        padding-top: 1.5rem;
        border-top: 1px solid var(--border);
        margin-top: 1.5rem;
    }
    
    .register-footer p {
        color: var(--gray);
    }
    
    .register-footer a {
        color: var(--primary);
        text-decoration: none;
        font-weight: 500;
    }
    
    .register-footer a:hover {
        text-decoration: underline;
    }
    
    .register-benefits {
        background: var(--white);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        padding: 2rem;
    }
    
    .register-benefits h3 {
        font-size: 1.5rem;
        font-weight: 600;
        color: var(--dark);
        margin-bottom: 1.5rem;
        text-align: center;
    }
    
    .benefits-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .benefit-item {
        text-align: center;
        padding: 1.5rem;
        border-radius: var(--radius);
        transition: transform 0.2s;
    }
    
    .benefit-item:hover {
        transform: translateY(-5px);
        background: var(--light);
    }
    
    .benefit-icon {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }
    
    .benefit-item h4 {
        font-size: 1.1rem;
        color: var(--dark);
        margin-bottom: 0.5rem;
    }
    
    .benefit-item p {
        color: var(--gray);
        line-height: 1.5;
    }
    
    .alert {
        padding: 1rem;
        border-radius: var(--radius);
        margin-bottom: 1.5rem;
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }
    
    .alert.success {
        background: #f0fdf4;
        color: #166534;
        border: 1px solid #bbf7d0;
    }
    
    .alert.error {
        background: #fef2f2;
        color: #b91c1c;
        border: 1px solid #fecaca;
    }
    .message-container {
    margin-bottom: 20px;
    text-align: center;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 10px;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}
    
    /* === AMÉLIORATIONS MOBILE - Formulaire d'inscription === */