* {
    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: 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: 80%;
    --container-width-md: 90%;
    --container-width-sm: 94%;

    --transition: all 400ms ease;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', 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 2rem;
    border: 1px solid transparent;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-primary {
    background: var(--color-success);
    color: var(--color-white);
}

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

/*----------Changing the navbar style on scroll----------------*/
.window-scroll {
    background: var(--color-success);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
}

.nav__container {
    height: 5rem;
    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-success);
}
.logo {
    width: 100%;
    height: 150px;
    margin-top: 10px;
    margin-left: -35px;
}

/*--------------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%;
    gap: 2rem;
}

.categories__left {
    margin: 1rem 0 3rem;
}
.categories__right {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}
.category {
    background: var(--color-bg2);
    padding: 1rem;
    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-variant);
}
.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;
    font-size: 18px;
    text-align: center;
}

.category p {
    font-size: 0.85rem;
    line-height: 1.3;
    text-align: center;
}

/*----------COURSES SECTION----------------*/
.courses {
    margin-top: 10rem;
}
.courses__container {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 2rem;
}
.courses__container .view-more {
    text-align: center;
    margin-left: 140%;
    margin-top: 3rem;
}
.courses__container .view-more a {
    width: 150px;
}

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

.course:hover {
    background: transparent;
    border-color: var(--color-success);
}
.course__info {
    padding: 2rem;
}

.course__info p {
    margin: 1.2rem 0 2rem;
    font-size: 0.9rem;
}
.course_image img {
    height: 100%;
    width: 100%;
}

/*----------PARTNERS SECTION----------------*/
.partners__container {
    margin-bottom: 5rem;
    height: 200px;
}
.partner-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 25px;
}
.partner-logo img {
    width: 120px;
    height: 120px;
}
/*----------ADVERT SECTION----------------*/
.advert {
    height: 150px;
    background: #c0c0c0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/*----------FAQS SECTION----------------*/
.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-success);
    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 SECTION----------------*/

.testimonials__container {
    overflow: hidden;
    position: relative;
    margin-bottom: 2rem;
}

.testimonial {
    padding-top: 2rem;
}

.avatar {
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1rem;
    border: 1rem solid var(--color-success);
}
.testimonial__info {
    text-align: center;
}
.testimonial__body {
    background: var(--color-success);
    padding: 2rem;
    margin-top: 3rem;
    position: relative;
}
.testimonial__body::before {
    content: "";
    display: block;
    background: linear-gradient(135deg, transparent, 
    var(--color-success), 
    var(--color-success),
    var(--color-success));
    width: 3rem;
    height: 3rem;
    position: absolute;
    left: 50%;
    top: -1.5rem;
    transform: rotate(45deg);
}

/*----------FOOTER SECTION----------------*/
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;
    color: #00bf8e;
}
.footer__socials {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    font-size: 1.2rem;
    margin-top: 2rem;
}
.footer__copyright {
    text-align: center;
    margin-top: 4rem;
    padding: 1.2rem 0;
    border-top: 1px solid var(--color-bg2);
}

/*------------MEDIA QUERY 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;
    }
    /*------- 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: 400ms;
        }
        .nav__menu li:nth-child(4) {
            animation-delay: 600ms;
        }
       

        @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-success);
            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-bg);
            color: var(--color-white);
        }

   /*------- HEADER------*/
   header {
    height: 75vh;
    margin-bottom: 4rem;
   }

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

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

/*------- MEDIA QUERY FOR PHONES------*/
@media screen and (max-width: 600px) {
   .container {
    width: var(--container-width-sm);
   }
/*------- NAV------*/

   .nav__menu {
    right: 3%;
   }

/*------- HEADER------*/

   .header {
    height: 100vh;
   }
   .header__container {
    grid-template-columns: 1fr;
    text-align: center;
    margin-top: 0;
   }
   .header__left p {
    margin-bottom: 1.3rem;
   }
/*------- 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;
}
/*------- TESTIMONIAL------*/
.testimonial__body {
    padding: 1.2rem;
}
/*------- FOOTER------*/
.footer__container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
}
.footer__1 p {
    margin: 1rem auto;
}
.footer__social {
    justify-content: center;
}
}