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

:root{
    --color-primary: #8563ff;
    --color-warning:#00bf8e;
    --color-success: #f7c94bd3;
    --color-danger: #f75742dc;
    --color-danger-variant: rgba(247, 87, 66, 0.322);
    --color-white:#fff;
    --color-light:rgba(255, 255, 255, 0.753);
    --color-black: #000;
    --color-bg: #1f2641;
    --color-bg1: #2e3267;
    --color-bg2: #2602899f;

    --container-width-lg: 80%;
    --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-color: 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{
    background: var(--color-white);
    display: inline-block;
    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{
    
    width: 100vw;
    height: 5rem;
    position: fixed;
    top: 0;
    z-index: 11;
}

.nav__container{
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 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 button {
    display: none;
}

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

.nav__menu a {
    font-size: 1.4rem;
    transition: var(--transition);
}

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

/*===========HEADER==========*/
header{
    position: relative;
    top: 6rem;
    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__right img {
    border: 2px solid cyan;
     border-radius: 10px;
     width: 90%;
     height: 360px;

    
}

.header__left{
    width: 120%;
}
*/



/*================CATEGORIES======================*/
.categories{
    background: var(--color-bg1);
    /* height: 31rem; */
    
}

.categories h1 {
      line-height: 0.1;
      margin-bottom: 0.3rem;
}

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

.categories__left {
    margin-right: 4rem;
}

.categories__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);
}

.category:nth-child(1) .category__icon {
    background: var(--color-success);
}

.category:nth-child(2) .category__icon {
    background: var(--color-danger);
}

.category:nth-child(3) .category__icon {
    background: var(--color-warning);
}

.category:nth-child(4) .category__icon {
    background: var(--color-light);
}

.category:nth-child(5) .category__icon {
    background: var(--color-danger-variant);
}

.category:nth-child(6) .category__icon {
    background: var(--color-danger);
}

.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================ */

.courses {
    margin-top: 2rem;
}

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

.faq {
    padding: 2rem;
    align-items: center;
    display: flex;
    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: 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);
}

.swiper-pagination {
    margin: 4rem 0 0.1rem;
}


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

.footer__container {
    padding-top: 2rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4rem;
}

.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__socials {
    display: flex;
    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 QUERIES (TABLETS)================== */
@media screen and (max-width: 1024px) {
   .container {
    width: var(--container-width-md);
   }
   h1 {
     font-size: 1.2rem;
   }
   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-dan);
    cursor: pointer;
   }

   nav button#close-menu-btn {
    display: none;
   }

   .nav__menu {
    position: fixed;
    right: 5%;
    top: 5rem;
    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);
    }

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





   .nav__menu li a {
    background: var(--color-primary);
    box-shadow:  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: 69vh;
   margin-bottom: 4rem;
}

.header__container {
    gap: 0rem;
   
}

/* ====================CATEGORIES=================== */
.categories {
    height: auto;
    margin-top: 4rem;
}
.categories__container {
    grid-template-columns: 1fr;
    gap: 3rem;
}

.categories__left {
    margin-right: 0;
}

/* =================POPULAR COURSES================== */
.courses {
    margin-top: 0;
}

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

/* ==================FAQS===================== */
.faqs__container {
    grid-template-columns: 1fr;
}
.faqs {
    padding: 1.5rem;
}

/* ==================FOOTER===================== */
.footer__container {
    grid-template-columns: 1fr 1fr;
}


}

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

    /* =========================NAVBAR========================= */
    .nav__menu {
        right: 3%;
    }


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

    .header__container {
        grid-template-columns: 1fr;
        text-align: center;
        margin-top: 0;
        gap: 2rem;
    }
    .header__left h1 {
        font-size: 2rem;
    }
    .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;
    }

     /* =========================POPULAR COURSES========================= */
  .courses__container {
    grid-template-columns: 1fr;
  }

   /* =========================TTESTIMONIAL========================= */
   .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;
  }

}