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

:root {
  --color-primary: #8A2BE2;
  --color-success: #00CED1;
  --color-warning: #FFF8DC;
  --color-danger: #FF8C00;
  --color-danger-variant: rgb(139, 0, 0);
  --color-white: #F8F8FF;
  --color-light: rgb(255, 250, 250);
  --color-black: #000000;
  --color-bg: #808080;
  --color-bg1: #4B0082;
  --color-bg2: #E6E6FA;
  
  --container-width-lg: 76%;
  --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: 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: 2.5rem;
}

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-color: var(--color-white);
}

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

/*===========NavBar=================*/


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

.container__nav__contianer {
  align-items: left;
  position: fixed;
}


.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: 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: 34rem;
}

.categories h1 {
  line-height: 1;
  margin-bottom: 4rem;
}

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

.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-black);
  padding: 2rem;
  border-radius: 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: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;
}

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

/*===========POPULAR COURSES=================*/

.courses {
  margin-top: 20rem;
}

.courses__container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

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

.course:hover {
  background: transparent;
  border-color: var(--color-primary);
  transition: var(--transition);
}

.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-black);
  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;
}

/*===========FOOTER=================*/

footer {
  background: var(--color-primary);
  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;
}