*{
    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-sh: 94%;

    --transition: all 400rs 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 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: 1.3rem;
}

a{
    color: var(--color-white);
}

img{
    width:100%;
    display: block;
    object-fit: fill;
}

.img1{
    width:84%;
    display: block;
    object-fit: fill;
}

.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);
}

.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 by using javascript on scroll */
.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{
    text-decoration: underline;
    text-decoration-color: #f75842;
    color: #f7c94b;
}


/* ====================header============================ */

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__left p{
    margin: 1rem 0 2.4rem;
}

/* ====================Categories============================ */

.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: 2rem;
}
.categories__left p{
    margin: 1rem 0 1rem;
}

.categories__right{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.category{
   background: var(--color-bg2);
   padding: 2rem;
   border-radius: 2rem;
   transition: var(--transition);
   margin: 10px;
   
}

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

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

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

.category p{
    font-size: 12px;
}


/* ====================Popular courses============================ */

.courses{
    margin-top: 10rem;
}

.courses__container{
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 2rem;
}

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

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

.course__info{
    padding: 2rem;
}

.course__info p{
    margin: 1.2rem 0 2rem;
    font-size: 0.8rem;
}

/* ==================== FAQS ============================ */

.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;
    background: var(--color-primary);
    height: fit-content;
    cursor: pointer;


}

.faq:hover{
    background-color:#f7c94b;
    box-shadow: inset 0 0 3rem rgba(221, 93, 8, 0.5);

    border-color: var(--color-primary);
}
.faq h4{
    font-size: 0.8rem;
    line-height: 2.2;
}


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

.faq p{
    margin-top: 0.7rem;
    display: none;
}

.faq.open p{
    display: block;
}


/* ==================== Testimonials ============================ */


.testimonials__container{
overflow-x: hidden;
position: relative;
margin-bottom: 5rem;
}

.testimonial{
    padding-top: 2rem;
}

.avatar{
    height: 6rem;
    width: 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;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135 deg ,transparent,var(--color-primary),var(--color-primary),var(--color-primary));
position: absolute;
left: 50%;
top: -1.5rem;
transform: rotate(45deg);
}


/* ==================== Footer ============================ */

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;
    text-decoration-color: #f75842;
    color: #f7c94b;
 }

 .footer__socials{
    display: flex;
gap: 1rem;
font-size: 1.2rem;
margin-top: 2rem;
text-decoration: underline;
 text-decoration-color:#f75842 ;
}

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

/*=============================Media Query===============================================*/

@media screen and (max-width: 1024px) {
    .container{
        width: var(--container-width-md);
        margin: 0 auto;
    }
    h1{
        font-size: 1.5rem;
        line-height: 1;
    }
    h2{
        font-size: 1.7rem;
    }
    h3{
        font-size: 1.4rem;
    }
    h4{
        font-size: 1.2rem;
    }
    /*=============================Nav ===============================================*/
nav button{
       display: inline-block;
       color: var(--color-white);
       font-size: 1.8rem;
       background: transparent;
       cursor: pointer;

}
.close-menu-button{
    display: none;
}

.nav__menu{
    position: fixed;
top: 5rem;
right: 5%;
height: fit-content;
width: 18rem;
gap: 0;
flex-direction: column;
display: none;

}
.nav__menu li{
    width: 100%;
    height: 5.8rem;
    animation: animatedNavItems 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: 400ms;
}
.nav__menu li:nth-child(4){
    animation-delay: 600ms;
}

@keyframes animatedNavItems {
    0%{
transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);
    }

    100%{
transform: rotateZ(0deg) rotateX(0) scale(1);
opacity: 1;
    }
}

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


.nav__menu li a:hover{
background: var(--color-bg2);
box-shadow: inset 0 0 3rem rgba(221, 93, 8, 0.5);

}


    /*=============================header ===============================================*/

header{
    height: 63vh;
    margin-bottom: 4rem;
}

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


.header__left p{
font-size: 0.9rem    
}

    /*=============================categories ===============================================*/

.categories{
    height: auto;
}

.categories__container{
    grid-template-columns: 1fr;
    gap: 3rem;
}

.categories__left{
    margin-right: 0;
}

    /*=============================courses ===============================================*/

.courses{
    margin-top: 0;
}

.courses__container{

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

    /*=============================faqs ===============================================*/

    .faqs__container{
        grid-template-columns: 1fr;
    }

    .faq{
        padding: 1.5rem;
    }
    /*=============================footer ===============================================*/
.footer__container{
    grid-template-columns: 1fr 1fr;
}

}


/*=============================Media Query (phones)===============================================*/


@media screen and (max-width: 603px) {
.container{
    width: var(--container-width-sh);
}
    /*=============================navbar ===============================================*/

.nav__menu{
    right: 3%;
}

    /*=============================header ===============================================*/
header{
    height: 100vh;
}

.header__container{
    grid-template-columns: 1fr;
    text-align: center;
    margin-top: 1rem;
}

.header__left p{
    margin-bottom: 1.3rem;
}

.img1 {
    width: 63%;
    margin-left: 5rem;
}

    /*=============================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;
}


    /*=============================courses ===============================================*/

.courses__container{
    grid-template-columns: 1fr;
}

    /*=============================testimonials ===============================================*/

.testimonial__body{
    padding: 1.2rem;
}


    /*=============================footer ===============================================*/

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

.footer__1 p{
    margin: 1rem auto;
}

.footer__socials{
    justify-content: center;
}
}