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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background-color: #e5e5f7;
            opacity: 0.8;
            background-image: radial-gradient(#444cf7 0.5px, #e5e5f7 0.5px);
            background-size: 10px 10px;
          
        }

        .login-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            overflow: hidden;
            width: 100%;
            max-width: 400px;
        }

        .login-header {
            background: linear-gradient(135deg, #2c3e50, #3498db);
            color: white;
            padding: 40px 30px;
            text-align: center;
        }

        .login-header h1 {
            font-size: 2rem;
            margin-bottom: 10px;
        }

        .login-header p {
            opacity: 0.9;
        }

        .role-selector {
            display: flex;
            background: #f8f9fa;
            margin: 0;
        }

        .role-btn {
            flex: 1;
            padding: 15px;
            border: none;
            background: transparent;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s;
            border-bottom: 3px solid transparent;
        }

        .role-btn.active {
            background: white;
            border-bottom-color: #3498db;
            color: #3498db;
        }

        .login-form {
            padding: 40px 30px;
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #2c3e50;
        }

        .form-group input, .form-group select {
            width: 100%;
            padding: 15px;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            font-size: 16px;
            transition: border-color 0.3s;
        }

        .form-group input:focus, .form-group select:focus {
            outline: none;
            border-color: #3498db;
        }

        .login-btn {
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s;
        }

        .login-btn:hover {
            transform: translateY(-2px);
        }

        .demo-credentials {
            margin-top: 20px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 10px;
            font-size: 14px;
        }

        .demo-credentials h4 {
            color: #2c3e50;
            margin-bottom: 10px;
        }

        .demo-credentials p {
            margin: 5px 0;
            color: #7f8c8d;
        }

        .hidden {
            display: none;
        }