:root {
            --primary-gradient: linear-gradient(135deg, #6A11CB 0%, #2575FC 100%);
            --secondary-gradient: linear-gradient(135deg, #FF6B6B 0%, #FFE66D 100%);
            --accent-gradient: linear-gradient(135deg, #00B4DB 0%, #0083B0 100%);
            --success-gradient: linear-gradient(135deg, #00b09b 0%, #96c93d 100%);
            --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ffa8a8 100%);
            --text-primary: #2D3748;
            --text-secondary: #718096;
            --background: #F8FAFC;
            --surface: #FFFFFF;
            --border: #E2E8F0;
            --shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            --radius: 16px;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

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

        body {
            background-color: var(--background);
            color: var(--text-primary);
            font-family: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1rem;
        }

        .login-container {
            width: 100%;
            max-width: 450px;
            margin: 0 auto;
        }

        .login-card {
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2.5rem;
            width: 100%;
            position: relative;
            z-index: 1;
            border: 1px solid rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
        }

        .login-header {
            text-align: center;
            margin-bottom: 2rem;
        }

        .login-logo {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 0.5rem;
        }

        .login-logo span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .login-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }

        .login-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        /* Form Styles */
        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .required::after {
            content: '*';
            color: #e53e3e;
            font-size: 0.8rem;
            margin-left: 0.25rem;
        }

        .input-with-icon {
            position: relative;
        }

        .form-control {
            padding: 0.75rem 1rem 0.75rem 2.5rem;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
            background: var(--background);
        }

        .form-control:focus {
            border-color: #6A11CB;
            box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.1);
        }

        .input-icon {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            font-size: 1rem;
            z-index: 3;
        }

        .password-toggle {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            cursor: pointer;
            font-size: 1rem;
            z-index: 3;
            background: none;
            border: none;
        }

        /* Buttons */
        .login-button {
            width: 100%;
            padding: 0.75rem 1.5rem;
            background: var(--primary-gradient);
            color: white;
            border: none;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .login-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(106, 17, 203, 0.3);
        }

        .login-button:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none;
        }

        /* Links */
        .login-links {
            text-align: center;
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }

        .login-link {
            color: #6A11CB;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }

        .login-link:hover {
            color: #2575FC;
        }

        /* Checkbox */
        .form-check-input:checked {
            background-color: #6A11CB;
            border-color: #6A11CB;
        }

        .form-check-input:focus {
            border-color: #6A11CB;
            box-shadow: 0 0 0 0.2rem rgba(106, 17, 203, 0.25);
        }

        /* Alerts */
        .alert {
            border-radius: var(--radius);
            border: none;
            padding: 1rem 1.25rem;
        }
        
        /* Nouveaux styles pour le système de sécurité */
        .security-info {
            background: linear-gradient(135deg, rgba(106, 17, 203, 0.1) 0%, rgba(37, 117, 252, 0.1) 100%);
            border-left: 4px solid #6A11CB;
            padding: 0.75rem 1rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            font-size: 0.85rem;
        }
        
        .security-info i {
            color: #6A11CB;
            margin-right: 0.5rem;
        }

        /* Responsive */
        @media (max-width: 576px) {
            .login-card {
                padding: 1.5rem;
            }
            
            .login-logo {
                font-size: 2rem;
            }
            
            .login-title {
                font-size: 1.5rem;
            }
        }