*{
margin: 0;
padding: 0;
border: 0;
outline: 0;
text-decoration: none;
list-style: none;
box-sizing: border-box;
}

:root{
--color-primary: #6c63ff;
--color-success:#00bf8e;
--color-warning:#f7c94b;
--color-danger:#f75842;
--color-danger-variant:rgba(247,88,66,0.4);
--color-white:#fff;
--color-light:rgba(255,255,255,0.7);
--color-black:#000;
--color-bg:#1f2641;
--color-bg1:#2e3267;
--color-bg2:#424890;

--container-width-lg:76%;
--container-width-md:90%;
--container-width-sm:94%;

--transition: all 400ms ease;
}


body{
    font-family: 'Montserrat', sans-serif;
line-height: 1.7;
color: var(--color-white);
background: var(--color-bg);
}

.container{
width: var(--container-width-lg);
margin: 0 auto;

}

section{
padding: 6rem 0;  


}
section{
padding: 6rem 0;

}

section h2{
text-align: center;
margin-bottom: 4rem;

}

h1,h2,h3,h4,h5{

    line-height: 1.2;
}
h1{
    font-size: 2.4rem;
}
h2{
    font-size: 2rem;
}
h3{
    font-size: 1.6rem;
}
h4{
    font-size: 1.3 rem;
}
a{

    color: var(--color-white);
}
img{
width: 100%;
display: block;
object-fit: cover;

}

.btn{
display: inline-block;
background: var(--color-white);
color: var(--color-black);
padding: 1rem 2rem;
border: 1px solid transparent;
font-weight: 500;
transition: var(--transition);
margin: 2rem 0;
}

.btn:hover{
background: transparent;
color: var(--color-white);
border-color: var(--color-white);
}


.btn-primary{

    background: var(--color-danger);
color: var(--color-white);

}
/*    navbar   */

nav{
    background:transparent;
    width: 100vw;
    height: 5rem;
    position: fixed;
    top: 0;
    z-index: 11;

}
/* change navbar style on scroll using javascript */
.window-scroll{
background: var(--color-primary);
box-shadow: 0 1rem 2rem rgba(0,0,0,0.2);

}




.nav_container{

    height: 100%;
    display :flex;
justify-content: space-between;

align-items: center;

}
nav button{

    display: none;
    
}
.nav_menu{

    display: flex;
    align-items: center;
    gap: 4rem;
}
.nav_menu a{

    font-size: 0.9rem;
transition: var(--transition);

}
.nav_menu a:hover{

    color: var(--color-bg2);
}
/*header styling*/


header{
position: relative;
top: 5rem;
overflow: hidden;
height: 70vh;
margin-bottom:5rem ;

}
.header_container{

    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 5rem;
    height: 100%;
}

.header_margin p {

    margin: 1rem 0 2.4rem;

}


/*Category styling*/


.categories{
    background: var(--color-bg1);
    height: 32rem;
}
.categories h1{

    line-height: 1;
    margin-bottom: 3rem;

}

.categories_container{
display: grid;
grid-template-columns: 40% 60%;

}

.categories_left{

    margin-right: 4rem;
}
.contegories_left p{
margin: 1rem 0 3rem;

}
.categories_right{
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1.2rem;
}

.category{

    background: var(--color-bg2);
    padding: 2rem;
    border-radius: 2rem;
    transition: var(--transition);

}

.category:hover{
box-shadow: 0 3rem 3rem rgba(0,0,0,0.3);
z-index: 1;
}

.category:nth-child(2) .category_icon{

    background: var(--color-danger);
}
.category:nth-child(3) .category_icon{

    background: var(--color-success);
}

.category:nth-child(4) .category_icon{

    background: var(--color-warning);
}


.category:nth-child(5) .category_icon{

    background: var(--color-success);
}

.category_icon{ 
background: var(--color-primary);
padding: 0.7rem;
border-radius: 0.9rem;

}

.category h5{
margin: 2rem 0 1rem;

}
.category p {

    font-size: 0.85rem;
}

/*courses styling*/

.courses{
margin-top: 10rem;

}
.courses_container{
display: grid;
grid-template-columns: repeat(3,1fr);
gap: 4rem;


}
.course{
background: var(--color-bg1);
text-align: center;
border: 1px solid transparent;
transition: var(--color-primary);
}

.course:hover{
background: transparent;
background-color: var(--color-primary);

}
.course_info{
padding: 2rem;

}
.course_info p{
margin: 1.2rem 0 2rem;
font-size: 0.9rem;
}

/*frequently asked question  styling*/


.faqs{

    background: var(--color-bg1);
box-shadow: inset 0 0 3rem rgba(0, 0, 0, 0.5);

}

.faqs_container{
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1rem;

}

.faq{
padding: 2rem;
display: flex;
align-items: center;
gap: 1.4rem;
height: fit-content;
background-color: var(--color-primary);
cursor: pointer;

}

.faq h4{
font-size: 1rem;
line-height: 2.2;

}
.faq_icon{

    align-self: flex-start;
    font-size: 1.2rem;
}


.faq p {

    margin-top:0.8rem ;
display:none;

}
.faq.open p{
display: block;

}
/*testimonial   styling*/
.testimonials_container{

    overflow-x: hidden;
    position: relative;
    margin-bottom:5rem ;
}
.testimonial{
    padding-top: 2rem;
}
.avatar{
width: 6rem;
height: 6rem;
border-radius: 50%;
overflow: hidden;
margin: 0 auto 1rem;
border: 1rem solid var(--color-bg1);

}
.testimonial_info{

    text-align: center;
}
.testimonial_body{
background: var(--color-primary);
padding: 2rem;
margin-top: 3rem;
position: relative;
}
.testimonial_body::before{

    content: "";
    display: block;
    background:linear-gradient(135deg,transparent,
    var(--color-primary),
    var(--color-primary),
    var(--color-primary)
    
    );
    width: 3rem;
    height: 3rem;
    position: absolute;
    left: 50%;
    top:-1.5rem;
transform: rotate(45deg);


}

/*footer  styling*/

footer{
background: var(--color-bg1);
padding-top: 5rem;
font-size: 0.9rem;

}

.footer_container{
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 5rem;
}

.footer_container > div h4 {
margin-bottom: 1.2rem;

}

.footer_1 p{

    margin: 0 0 2rem;
}
footer ul li {

    margin-bottom: 0.7rem;
}
footer ul li a:hover{

    text-decoration: underline;
}
.footer_social{

    display: flex;
    gap: 1rem;
    font-size: 1.rem;
    margin-top: 2rem;
}
.footer_copyright{

text-align: center;
margin-top: 4rem;
padding: 1.2rem 0;
border-top: 1px solid var(--color-bg2);
}

/*media queries for tablet*/


@media screen and (max-width: 1024px) {
.container{

    width: var(--container-width-md);
}

h1{

    font-size: 2.2rem;
}
h2{

    
    font-size: 1.7rem;
}


h3{

    
    font-size: 1.4rem;
}

h4{

    
    font-size: 1.2rem;
}

/*media queries for tablet navbar*/


nav button{

    display: inline-block;
    background: transparent;
    font-size: 1.8rem;
    color: var(--color-white);
    cursor:pointer;
}

nav button#close-menu-btn{
    display: none;
}
.nav_menu{
position: fixed;
top: 5rem;
right: 5%;
height: fit-content;
width: 18rem;
flex-direction: column;
gap:0;
display: none;
}
.nav_menu li{
width: 100%;
height: 5.8rem;
animation: animateNavItems 400ms linear forwards;
transform-origin: top right;
opacity: 0;
}
.nav_menu li:nth-child(2){
animation-delay: 200ms;

}


.nav_menu li:nth-child(3){
    animation-delay: 300ms;
    
    }

    .nav_menu li:nth-child(4){
        animation-delay: 400ms;
        
        }



@keyframes animateNavItems{

    0%{
transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);

    }
    100%{
        transform: rotateZ() rotateX() scale(1);
         opacity: 1;
    }
}

.nav_menu li a {
background: var(--color-primary);
box-shadow: -4rem 6rem 10rem rgba(0,0,0,0.6);
width: 100%;
height:100%;
display: grid;
place-items: center;


}
.nav_menu li a:hover{
background: var(--color-bg2);
color: var(--color-white);

}

/*media queries for tablet header*/
header{

height: 58vh;
margin-bottom: 4rem;


}
.header_container{
gap: 0;
    padding-bottom: 3rem;
}


/*media queries for category */


.categories{

    height: auto;
}
.categories_container{

    grid-template-columns: 1fr;
    gap: 3rem;
}
.categories_left{
margin-right: 0;

}


/*media queries for popular courses */
.courses{
margin-top: 0;

}
.courses_container{

    grid-template-columns: 1fr 1fr;
}


/*media queries for freq asked question */

.faqs_container{
grid-template-columns: 1fr;


}

.faq{

    padding: 1.5rem;
}
/*media queries for freq asked question */


.footer_container{

    grid-template-columns: 1fr 1fr;
}


}

/*media queries for mobile */
@media screen and (max-width: 600px)
{

    .container{
width: var(--container-width-sm);

    }

/*media queries for mobile  navbar*/
.nav_menu{

    right:3%;
}

/*media queries for mobile  header*/
header{

    height: 110vh;
}
.header_container{
grid-template-columns: 1fr;
text-align: center;
margin-top: 0;

}
.header_left p{
    margin-bottom: 1.3rem;
}
/*media queries for mobile  categories*/

.categories_right{

    grid-template-columns: 1fr 1fr;
    gap: 0.7rem;
}

.category{

    padding: 1rem;
    border-radius: 1rem;
}

.category_icon{
margin-top: 4px;
display: inline-block;
}
/*media queries for mobile  popular courses */

.courses_container{

    grid-template-columns: 1fr;
}
/*media queries for mobile  testimonial*/

.testimonial_body{

padding: 1.2rem;

}
/*media queries for mobile  footer*/

.footer_container{
grid-template-columns: 1fr;
text-align: center;
gap: 2rem;


}
.footer_1 p{

    margin: 1rem auto;
}

.footer_social{

justify-content: center;

}
}







