*{
    margin:0;
    padding: 0;
    border: 0;
    outline: 0;
    list-style: none;
    text-decoration: 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: #181a23;
    --color-bg1: #2e3267;
    --color-bg2: #424890;
    
    --container-width-lg: 76%;
    --container-width-md: 90%;
    --container-width-sm: 94%;

    --transition: all 400ms ease;
}

body{
    font-family: 'Roboto Mono', monospace;
    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); */
    transition: all 1.2s;
}

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

}

.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;
}

.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 1.2s;
}

.nav__menu a:hover{
    font-size: 1.1rem;
    color: var(--color-success);
    opacity: 0.7;
    width: 1.2rem;
}

#imglogo, .nav__menu li{
    transition: all 1.3s;
}

#imglogo:hover,
.nav__menu li:hover{
    opacity: 0.6;
    rotate: calc(360deg);
}

 /*          Header            */

header{
    position: relative;
    top: 5rem;
    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-image{
    transition: 2s;
}
.header_right-image:hover{
    opacity: 0.6;
}


/*          Categories         */

.categories{
    background: var(--color-bg1);
    height: 35rem;
}

.cotegories h1{
    margin-bottom: 3rem;
}

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


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

.categories__left{
    margin-right: 4rem;
}

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

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

.category:hover{
    box-shadow: 0 3rem 3rem rgba(0,0,0,0.3);
    z-index: 1;
    background-color: rgb(205, 154, 60);
    color: #000;
}

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

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

.category p{
    font-size: 0.85rem;
}


/*        Popular courses      */

.courses{
    margin-top: -3rem;
}

.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: all 2s;
}

.course:hover{
    background: transparent;
    border-color: var(--color-primary);
    background-color: rgb(205, 154, 60);
    color: #000;
}

.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;
    gap: 1rem;
}

.faq{
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.4rem;
    height: fit-content;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: inset 0 0 3rem rgba(0,0,0,0.5);
}

.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;
}

/*             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;
}


/*        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__1 p{
    margin: 1rem 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);
}


.footer__4 a:hover{
    padding: 1px;
    border-radius: 40%;
    background-color: #00bf8e;
}


/*           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 500ms linear forwards;
    transform-origin: top right;
    opacity: 0;
  }
  .nav__menu li:nth-child(2){
    animation-delay: 600ms;
  }
  .nav__menu li:nth-child(3){
    animation-delay: 700ms;
  }
  .nav__menu li:nth-child(4){
    animation-delay: 800ms;
  }
  @keyframes animateNavItems {
    0%{
        transform: rotateZ(-90deg);
    }
    100%{
        transform: rotateZ(0);
        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: 52vh;
    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;
  } */
  /*     Popular 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 FOR Mobile       */

/* @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;
    }
    .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 Course */
    /* .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__socials{
        justify-content: center;
    }
} */