* {
    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: #f75832;
    --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: 80%;
    --container-width-md: 90%;
    --container-width-sm: 94%;

    --transition: all 400ms ease;
}

body{
    font-family: "Montserrat", sans-serif;
    font-optical-sizing: auto;
    font-weight: <weight>;
    font-style: normal;
    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;
    gap: 1.2rem;
    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);
}

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, 0.2);
}
.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: all 400ms ease;
}

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

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;
}
.header_left button{
    margin-top: 2.4rem;
}
.header_right img{
    width: 100%;
}

.categories {
    background: var(--color-bg1);
    height: 29rem;
}

.categories h1 {
    line-height: 1;
    margin-bottom: 3rem;
}

.categories_container {
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 4rem;
}

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

.categories_right {
    display: grid;
    grid-template-columns: repeat(2, 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_icon {
    background: var(--color-primary);
    padding: 0.7rem;
    border-radius: 1.2rem;
}

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

.category p {
    font-size: 0.85rem;
}
.courses{
    margin-top: 15rem;
}
.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: 0.9rem;
}
.faqs{
    background: var(--color-bg1);
    box-shadow: 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; /* Adding 'rem' unit */
    display: none;
}

.faq.open p {
    display: block;
}
.testimonials_container{
    overflow-x: hidden;
    position: relative;
    margin-bottom: 5rem;
}
.testimonial{
    padding-top: 2rems;
}
.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;
}
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:hover{
    text-decoration: underline;
}
.footer_socials{
    display: flex;
    gap: 1rem;
    font-size: 1.2rem;
    margin-top: 2rem;
}

//-----------ABOUT PART-----//
.about_achievements {
    margin-top: 3rem;
}

.about_achievements-container {
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 5rem;
}

.about_achievements-right > p {
    margin: 1.6rem 0 2.5rem;
}

.achievements_cards{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.achievements_card{
    background: var(--color-bg1);
    padding: 1.6rem;
    border-radius: 1rem;
    text-align: center;
    transition: var(--transition);
}
,achievements_card:hover{
    background: var(--color-bg2);
    box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.3);
}
.achievements_icon{
    background: var(--color-danger);
    padding: 0.6rem;
    border-radius: 1rem;
    display: inline-block;
    margin-bottom: 2rem;
    font-size: 2rem;
}
.achievements_card:nth-child(1).achievements_icon{
    background: var(--color-success);
}
.team{
    background: var(--color-bg1);
    box-shadow: inset 0 0 3rem rgba(0, 0, 0, 0.5);
}
.team_container{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}
.team_member{
    background: var(--color-bg2);
    padding: 2rem;
    border: 1px solid transparent;
    transition: var(--transition);
}
.team_member:hover{
    background: transparent;
    border-color: var(--color-primary);
}
.team_member-image img {
    filter: saturate(0);
}
.team_member:hover img{
    filter: saturate(1);
}
.team_member-info * {
    text-align: center;
    margin-top: 1.4rem;
}
.team_member-info p{
    color: var(--color-light);
}