:root {
            --primary: #4e73df;
            --primary-dark: #2e59d9;
            --primary-light: #7a8ee3;
            --secondary: #36b9cc;
            --success: #1cc88a;
            --light: #f8f9fc;
            --dark: #5a5c69;
            --gray: #858796;
            --gradient-start: #4e73df;
            --gradient-end: #224abe;
            --shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
            --transition: all 0.3s ease;
        }
        
       
  

        body {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-dark) 100%);

            font-family: 'Poppins', sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow-x: hidden;
            padding: 20 0;
        }
        
        .auth-container {
            background-color: white;
            border-radius: 1.2rem;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            max-width: 1000px;
            width: 90%;
        }
        
        .auth-container:hover {
            box-shadow: 0 0.5rem 2rem 0 rgba(58, 59, 69, 0.2);
            transform: translateY(-5px);
        }
        
        .illustration-side {
            background: white;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .illustration-side::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            top: -50%;
            left: -50%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 60%);
            transform: rotate(30deg);
        }
        
        .illustration-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        
        .illustration-title {
            font-weight: 600;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        
        .illustration-img {
            max-width: 85%;
            height: auto;
            margin: 1.5rem 0;
            filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.1));
            transition: var(--transition);
        }
        
        .illustration-img:hover {
            transform: scale(1.05);
        }
        
        .illustration-text {
            font-size: 0.9rem;
            opacity: 0.9;
            margin-top: 1.5rem;
        }
        
        .form-side {
            padding: 2.5rem;
        }
        
        .logo {
            text-align: center;
            margin-bottom: 1.5rem;
        }
        
        .logo-text {
            font-weight: 900;
            color: var(--primary);
            font-size: 1.8rem;
            letter-spacing: 0.5px;
        }
        
        .logo-text span {
            font-weight: 500;
        }
        
        .auth-tabs {
            border-bottom: none;
            margin-bottom: 2rem;
            background: var(--light);
            border-radius: 50px;
            padding: 0.3rem;
            position: relative;
        }
        
        .auth-tabs .nav-link {
            color: var(--gray);
            font-weight: 500;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
            z-index: 2;
        }
        
        .auth-tabs .nav-link.active {
            color: white;
            border: none;
            background: transparent;
        }
        
        .slider {
            position: absolute;
            height: calc(100% - 0.6rem);
            background: var(--primary);
            border-radius: 50px;
            top: 0.3rem;
            left: 0.3rem;
            transition: all 0.3s ease;
            z-index: 1;
        }
        
        .tab-content {
            position: relative;
        }
        
        .tab-pane {
            animation: fadeIn 0.5s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .form-title {
            text-align: center;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        
        .form-group {
            margin-bottom: 1.5rem;
            position: relative;
        }
        
        .form-control-user {
            border-radius: 50px;
            padding: 0.8rem 1.5rem 0.8rem 3rem;
            border: 1px solid #e3e6f0;
            transition: var(--transition);
        }
        
        .form-control-user:focus {
            box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
            border-color: var(--primary-light);
        }
        
        .input-icon {
            position: absolute;
            left: 1.2rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gray);
            z-index: 5;
        }
        
        .btn-user {
            border-radius: 50px;
            padding: 0.8rem 1.5rem;
            font-weight: 600;
            background: var(--primary);
            border: none;
            transition: var(--transition);
            box-shadow: 0 2px 5px rgba(78, 115, 223, 0.3);
        }
        
        .btn-user:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(78, 115, 223, 0.4);
        }
        
 
        
        .divider {
            display: flex;
            align-items: center;
            margin: 1.5rem 0;
            color: var(--gray);
        }
        
        .divider::before, .divider::after {
            content: "";
            flex: 1;
            height: 1px;
            background: #e3e6f0;
        }
        
        .divider span {
            padding: 0 1rem;
            font-size: 0.9rem;
        }
        
        .social-auth {
            display: flex;
            gap: 0.8rem;
            margin-bottom: 1.5rem;
        }
        
        .social-auth .btn {
            flex: 1;
        }
        
        .form-check-input:checked {
            background-color: var(--primary);
            border-color: var(--primary);
        }
        
        .form-check-label {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        .auth-footer {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        
        .auth-footer a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }
        
        .auth-footer a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        
        .password-toggle {
            position: absolute;
            right: 1.2rem;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: var(--gray);
            z-index: 5;
        }
        
        /* Responsive adjustments */
        @media (max-width: 992px) {
            .illustration-side {
                display: none;
            }
            
            .auth-container {
                width: 85%;
            }
        }
        
        @media (max-width: 576px) {
            .form-side {
                padding: 2rem 1.5rem;
            }
            
            .social-auth {
                flex-direction: column;
            }
            
            .auth-tabs .nav-link {
                padding: 0.6rem 1rem;
                font-size: 0.9rem;
            }
        }

        form-control-user {
            border-radius: 50px;
            padding: 0.8rem 1.5rem 0.8rem 3rem;
            border: 1px solid #e3e6f0;
            transition: var(--transition);
        }
        
        .form-control-user:focus {
            box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
            border-color: var(--primary-light);
        }
        
        .input-icon {
            position: absolute;
            left: 1.2rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gray);
            z-index: 5;
        }
        
        .btn-user {
            border-radius: 50px;
            padding: 0.8rem 1.5rem;
            font-weight: 600;
            background: var(--primary);
            border: none;
            transition: var(--transition);
            box-shadow: 0 2px 5px rgba(78, 115, 223, 0.3);
        }
        
        .btn-user:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(78, 115, 223, 0.4);
        }
        
        .form-check-input:checked {
            background-color: var(--primary);
            border-color: var(--primary);
        }
        
        .form-check-label {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        .auth-footer {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        
        .auth-footer a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }
        
        .auth-footer a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        
        .password-toggle {
            position: absolute;
            right: 1.2rem;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: var(--gray);
            z-index: 5;
        }
        
        .student-fields {
            background-color: #f8f9fc;
            padding: 1.5rem;
            border-radius: 0.8rem;
            margin-top: 1rem;
            display: none;
            transition: var(--transition);
        }
        
        .form-select {
            border-radius: 50px;
            padding: 0.8rem 1.5rem 0.8rem 1.5rem;
            border: 1px solid #e3e6f0;
        }
        
        .name-fields {
            display: flex;
            gap: 15px;
        }
        
        .name-fields .form-group {
            flex: 1;
        }
        
        /* Responsive adjustments */
        @media (max-width: 992px) {
            .illustration-side {
                display: none;
            }
            
            .auth-container {
                width: 85%;
            }
        }
        
        @media (max-width: 768px) {
            .name-fields {
                flex-direction: column;
                gap: 0;
            }
        }
        
        @media (max-width: 576px) {
            .form-side {
                padding: 2rem 1.5rem;
            }
            
            .student-fields {
                padding: 1rem;
            }}