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

:root{
    --color-primary:#86c5e0;
    --color-success:#00bf8e;
    --color-warning:#f7c94b;
    --color-danger:#43cea4;
    --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:rgb(140, 173, 204);
    --color-bg1:#0099ff;
    --color-bg2:#3c6c99;

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

    --transition: all 400ms ease;
}
body{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, 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: cover;
}
.btn {
    display: inline-block;
    background: var(--color-white);
    color: var(--color-black);
    padding: 1rem 1rem;
    margin-bottom: 1rem 1rem;
    border: 1px solid transparent;
    font-weight: 500;
    transition: var(--transition);
    border-radius: 25px;

}

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

.btn-primary {
    background-color: var(--color-danger);
    color: var(--color-white);
    margin: auto;
}

.btn-primary1{
    background-color: var(--color-danger);
    color: var(--color-white);
    
    width: 10rem;
    height: 5rem;
}


/*Navbar */

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

.window-scroll{
    background: var(--color-primary);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.3);
}


.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 **/
header{
    position: relative;
    top: 5rem;
    overflow: hidden;
    height: 85vh;
    margin-bottom: 10rem;
}

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

.header__left p{
    margin: 1rem 0 2.4rem;
    font-size: larger;

}


/* Categories*/

.categories{
    background: var(--color-bg1);
    height:auto ;
    
}
.categories1{
    background: var(--color-bg1);
    height:auto ;
    
}
.categories h1{
    line-height: 1;
    margin-bottom: 2rem;
}

.categories__container{
    display: grid;
    grid-template-columns: 30% 80% ;
    
}

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

}
.categories__right {
    margin-top: -4rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}
.categories__right1 {
    margin-top: 0rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    
}

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


 .category:hover{
    box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.4);
    z-index: 1;
 }

 .category:nth-child(1) .category__icon{
    background: red;
 }
 .category:nth-child(2) .category__icon{
    background: var(--color-warning);
 }
.category:nth-child(3) .category__icon{
    background: blue;
 }
 .category:nth-child(4) .category__icon{
    background: var(--color-warning);
 }
 .category:nth-child(5) .category__icon{
    background: var(--color-success );
 }
 .category:nth-child(6) .category__icon{
    background: red;
 }

 .category__icon {
    background: var(--color-success);
    padding: 0.7rem;
    border-radius: 0.9rem;
 }
 .category h5{
    margin: 2rem 0 1rem;
 }
 .category p {
    font-size: 0.79rem;
 }

 /* Courses*/
 .courses{
    margin-top: 10rem;
 }

 .courses__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    border-radius: 25px;
 }
 .course{
    background: var(--color-bg1);
    text-align: center;
    border: 1px solid transparent;
    transition: var(--transition);
    border-radius: 25px;
 }
.course:hover{
    background: transparent;
    border-color: var(--color-primary);
}

 .course__info{
    padding: 1rem;
    border-radius: 25px;

 }

 .course__info p {
    margin: 1.2rem 0 2rem;
    font-size: 0.9rem;
    border-radius: 25px;
 }


 /* 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;
    height: fit-content;
    background: 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;
}



/*testimonials*/
.testimonials__container{
    overflow-x: hidden;
    position: relative;
    margin-bottom: 1rem;
}

.testimonial{
    padding-top: -1rem;
}
.avatar{
    width: 14rem;
    height: 14rem;
    border-radius: 20%;
    overflow: hidden;

}

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

.footer__container{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

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

}

.footer__1 p{
    margin: 1rem 0 3rem ;
}

footer ul li{
    margin-bottom: 0.7rem;
}
footer ul li a:hover{
    text-decoration: underline;
}
.footer_socials{
    display: flex;
    gap: 1rem;
    font-size: 1.2rem;
    margin-top: 2rem;
}

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

@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;
  }


/* navbaar*/
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: 3%;
    height: fit-content;
    width: 15rem;
    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(0) rotateX(0) 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);
 }
 /* header*/
 header {
    height: 100vh;
    margin-bottom: 4rem;
 }
 .header__container{
    gap: 0;
    padding-bottom: 3rem;
 }
 /*categories*/
 .categories{
height:auto ;
 }
 .categories1{
    height:auto ;
     }
 .btn{
    margin-bottom:04rem ;
 }


 .categories__container{
    grid-template-columns: 1fr;
    gap: 3rem;
 }
 .categories__right1{
    grid-template-columns: 1fr 1fr ;
    gap: 0.7rem;
}

 .categories__left{
    margin-right: 0;
 }

 /*courses*/
 .course{
    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:600px){
    .container{
        width: var(--container-width-sm);
    }
    /*navbaar*/
    .nav_menu{
        right: 4%;
    }

    /*header*/
    header{
        height: 150vh;
    }

    .header__container{
        grid-template-columns: 1fr;
        text-align: center;
        margin-top: 3rem;
    }

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

    /*categories*/
    .categories__right{
        grid-template-columns: 1fr 1fr;
        gap: 0.7rem;
    }
    .categories__right1{
        grid-template-columns: 1fr 1fr ;
        gap: 0.7rem;
    }
    .categories__left{
        grid-template-columns: 1fr 1fr;
        gap: 0.7rem;
        margin-bottom: 4rem;
    }
    .category{
        padding: 1rem;
        border-radius: 1rem;
    }

    .category__icon{
        margin-top: 4px;
        display: inline-block;
    }

    /*courses*/
    .courses__container{
        grid-template-columns: 1fr;
        text-align: center;
    }

    /*testimonial*/
    .testimonial__body{
        padding: 10rem;
    }

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

    .footer__1 p {
        margin: 1rem auto ;
    }

    .footer_socials{
        justify-content: center;
    }


}