:root {
            --primary-color: rgb(169, 5, 5);
            --sombre-primary-color: rgb(121, 3, 3);
            --secondary-color: #000000;
            --accent-color: #ffffff;
            --background-dark: rgba(0, 0, 0, 0.5);
            --light-gray: #f8f9fa;
            --medium-gray: #e9ecef;
            --dark-gray: #495057;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * {
            font-family: 'Inria Sans', sans-serif;
            font-style: normal;
            transition: var(--transition);   
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        body {
            color: var(--secondary-color);
            line-height: 1.6;
            background-color: var(--light-gray);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
            background-image: linear-gradient(135deg, rgba(169, 5, 5, 0.05) 0%, rgba(255, 255, 255, 0.05) 100%);
        }

        .auth-container {
            background-color: var(--accent-color);
            border-radius: 16px;
            box-shadow: var(--shadow);
            width: 100%;
            max-width: 480px;
            overflow: hidden;
            position: relative;
            z-index: 1;
        }

        .auth-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 8px;
            background: linear-gradient(90deg, var(--primary-color) 0%, var(--sombre-primary-color) 100%);
            z-index: 2;
        }

        .auth-header {
            padding: 30px 30px 20px;
            text-align: center;
            position: relative;
        }

        .auth-header img {
            height: 60px;
            margin-bottom: 15px;
            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
        }

        .auth-header h2 {
            color: var(--primary-color);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .auth-header p {
            color: var(--dark-gray);
            font-size: 14px;
        }

        .auth-tabs {
            display: flex;
            margin: 25px 30px 0;
            background-color: var(--medium-gray);
            border-radius: 50px;
            padding: 5px;
            position: relative;
        }

        .auth-tab {
            flex: 1;
            text-align: center;
            padding: 12px;
            cursor: pointer;
            font-weight: 600;
            color: var(--dark-gray);
            z-index: 1;
            position: relative;
            border-radius: 50px;
        }

        .auth-tab.active {
            color: var(--accent-color);
        }

        .tab-indicator {
            position: absolute;
            top: 5px;
            left: 5px;
            height: calc(100% - 10px);
            width: calc(50% - 5px);
            background: linear-gradient(90deg, var(--primary-color) 0%, var(--sombre-primary-color) 100%);
            border-radius: 50px;
            transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
        }

        .auth-content {
            padding: 30px;
        }

        .auth-form {
            display: none;
        }

        .auth-form.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .form-group {
            margin-bottom: 20px;
            position: relative;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark-gray);
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid var(--medium-gray);
            border-radius: 8px;
            font-size: 15px;
            background-color: var(--light-gray);
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
            background-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(169, 5, 5, 0.1);
        }

        .password-container {
            position: relative;
        }

        .toggle-password {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--dark-gray);
            cursor: pointer;
        }

        .checkbox-group {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }

        .checkbox-group input {
            margin-right: 12px;
            margin-top: 3px;
            min-width: 18px;
            min-height: 18px;
            accent-color: var(--primary-color);
        }

        .checkbox-group label {
            font-size: 13px;
            color: var(--dark-gray);
            line-height: 1.5;
            user-select: none;
        }

        .checkbox-group label a {
            color: var(--primary-color);
            font-weight: 600;
        }

        .btn {
            display: inline-block;
            background: linear-gradient(90deg, var(--primary-color) 0%, var(--sombre-primary-color) 100%);
            color: var(--accent-color);
            border: none;
            padding: 16px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 16px;
            width: 100%;
            font-weight: 600;
            text-align: center;
            box-shadow: 0 4px 6px rgba(169, 5, 5, 0.1);
            transition: var(--transition);
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(169, 5, 5, 0.15);
        }

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

        .btn-google {
            background: var(--accent-color);
            color: var(--dark-gray);
            border: 1px solid var(--medium-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 25px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        }

        .btn-google:hover {
            background: var(--light-gray);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }

        .btn-google img {
            height: 20px;
            margin-right: 12px;
        }

        .auth-footer {
            text-align: center;
            margin-top: 25px;
            font-size: 14px;
            color: var(--dark-gray);
        }

        .auth-footer a {
            color: var(--primary-color);
            font-weight: 600;
            margin-left: 5px;
        }

        .divider {
            display: flex;
            align-items: center;
            margin: 25px 0;
            color: var(--dark-gray);
            font-size: 13px;
        }

        .divider::before, .divider::after {
            content: "";
            flex: 1;
            border-bottom: 1px solid var(--medium-gray);
        }

        .divider::before {
            margin-right: 15px;
        }

        .divider::after {
            margin-left: 15px;
        }

        .loading {
            display: none;
            text-align: center;
            margin-top: 20px;
        }

        .loading-spinner {
            border: 3px solid rgba(169, 5, 5, 0.1);
            border-radius: 50%;
            border-top: 3px solid var(--primary-color);
            width: 24px;
            height: 24px;
            animation: spin 1s linear infinite;
            margin: 0 auto 10px;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .error-message {
            color: var(--primary-color);
            font-size: 13px;
            margin-top: 5px;
            display: none;
            font-weight: 500;
        }

        /* Modal de vérification */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 100;
            justify-content: center;
            align-items: center;
            animation: fadeIn 0.3s ease;
        }

        .content {
            background-color: var(--accent-color);
            border-radius: 16px;
            padding: 30px;
            width: 100%;
            max-width: 400px;
            box-shadow: var(--shadow);
            text-align: center;
            position: relative;
        }

        .content h3 {
            color: var(--primary-color);
            margin-bottom: 15px;
            font-size: 20px;
        }

        .content p {
            color: var(--dark-gray);
            margin-bottom: 25px;
            font-size: 15px;
            line-height: 1.5;
        }

        .verification-options {
            margin-bottom: 25px;
        }

        .verification-option {
            display: flex;
            align-items: center;
            padding: 15px;
            border: 2px solid var(--medium-gray);
            border-radius: 8px;
            margin-bottom: 10px;
            cursor: pointer;
            transition: var(--transition);
        }

        .verification-option:hover {
            border-color: var(--primary-color);
            background-color: rgba(169, 5, 5, 0.03);
        }

        .verification-option.selected {
            border-color: var(--primary-color);
            background-color: rgba(169, 5, 5, 0.05);
        }

        .verification-option input {
            margin-right: 12px;
            accent-color: var(--primary-color);
        }

        .verification-option label {
            display: flex;
            align-items: center;
            width: 100%;
            cursor: pointer;
            font-weight: 500;
        }

        .verification-option .icon {
            margin-right: 10px;
            color: var(--primary-color);
            font-size: 20px;
        }

        .close-modal {
            position: absolute;
            top: 15px;
            right: 15px;
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            color: var(--dark-gray);
        }

        /* Animation pour le changement d'onglet */
        @keyframes slideInLeft {
            from { transform: translateX(-10px); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }

        @keyframes slideInRight {
            from { transform: translateX(10px); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }

        .slide-in-left {
            animation: slideInLeft 0.4s ease;
        }

        .slide-in-right {
            animation: slideInRight 0.4s ease;
        }

        /* Modal overlay */
        .traitementInscription-modal {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 9999;
        }

        /* Fenêtre centrée */
        .traitementInscription-content {
            background: #fff;
            border-radius: 16px;
            padding: 32px 24px;
            max-width: 400px;
            width: 90%;
            box-shadow: 0 8px 32px rgba(0,0,0,0.15);
            position: relative;
            text-align: center;
            animation: fadeIn 0.3s;
        }

        .traitementInscription-content .close-modal {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 2rem;
            color: #900;
            cursor: pointer;
        }

        .traitementInscription-content .modal-title {
            margin-bottom: 16px;
            color: #900;
            font-size: 1.4rem;
            font-weight: 700;
        }

        .traitementInscription-content .modal-message {
            margin-bottom: 24px;
            font-size: 1rem;
            color: #333;
        }

        .traitementInscription-content .contact {
            font-weight: bold;
            color: #900;
        }

        .traitementInscription-content .modal-ok {
            background: #900;
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 12px 32px;
            font-size: 1rem;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.2s;
        }

        .traitementInscription-content .modal-ok:hover {
            background: #b00;
        }