body[data-inactive] {
  overflow: hidden;
}

body {
  overflow-x: hidden;
}

/* header */

.logo {
  text-decoration: none;
  align-items: center;
  gap: 0.5rem;
}

.logo img {
  width: 2.5rem;
}

.header--container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5em 0 0;
}

.primary-navigation {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.nav-list li {
  list-style: none;
}

.nav-list li a {
  text-decoration: none;
  color: var(--clr-neutral-900);
  font-weight: 500;
}

.nav-list li a:is(:hover, :focus) {
  color: var(--clr-primary-400);
}

.nav-toggle {
  border: none;
  cursor: pointer;
  background: transparent;
  padding: 0.5em;
  display: grid;
  place-items: center;
  z-index: 999;
}

.nav-toggle .bar {
  position: relative;
  display: block;
  width: 0.75rem;
  height: 0.125rem;
  background-color: var(--clr-primary-400);
  border-radius: 100vw;
}

.nav-toggle .bar::before {
  content: "";
  position: absolute;
  top: -0.25rem;
  right: 0;
  width: 0.375rem;
  height: 0.125rem;
  background-color: var(--clr-primary-400);
  border-radius: 100vw;
}

.nav-toggle .bar::after {
  content: "";
  position: absolute;
  top: 0.25rem;
  right: 0;
  width: 1.25rem;
  height: 0.125rem;
  background-color: var(--clr-primary-400);
  border-radius: 100vw;
}

.nav-toggle[aria-expanded="true"] .bar {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .cross {
  position: relative;
  display: block;
  width: 1.125rem;
  height: 0.125rem;
  background-color: var(--clr-primary-400);
  border-radius: 100vw;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .cross::before {
  content: "";
  position: absolute;
  left: 0;
  width: 1.125rem;
  height: 0.125rem;
  background-color: var(--clr-primary-400);
  border-radius: 100vw;
  transform: rotate(90deg);
}

.primary-navigation {
  display: none;
  transform: translateX(200%);
  transition: transform 0.125ms ease;
}

.primary-navigation[data-visible] {
  display: flex;
  position: fixed;
  top: 0;
  right: 0;
  left: 30%;
  bottom: 0;
  z-index: 99;
  background-color: var(--clr-neutral-100);
  padding: 6.25em 2.5em;
  transform: translateX(0);
  box-shadow: 0 0 15rem 15rem hsla(0, 0%, 0%, 0.25);
}

@media screen and (width>=50em) {
  .nav-toggle {
    display: none;
  }

  .primary-navigation {
    display: flex;
    transform: translateX(0);
    flex-direction: row;
    align-items: center;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
  }
}

/* hero */

.hero {
  position: relative;
  padding-bottom: 15em;
  margin-bottom: 15em;
}

.hero--container {
  display: grid;
  gap: 1rem;
  background-image: url(../assets/hero-bg.png);
  background-size: 75%;
  background-repeat: no-repeat;
  background-position: center center;
}

.hero__body {
  max-width: 25rem;
}

.search-location {
  position: relative;
  background-color: var(--clr-neutral-100);
  border-radius: 100vw;
  padding: 0.375em;
}

.search-location button {
  position: absolute;
  right: 0.375em;
  top: 50%;
  transform: translateY(-50%);
}

.search-input {
  position: relative;
}

.search-input .icon {
  position: absolute;
  top: 50%;
  left: 0.5em;
  transform: translateY(-50%);
}

#location-search {
  border: none;
  outline: none;
  background: transparent;
  padding: 0.5em 2em;
}

@media screen and (width>=50em) {
  .hero {
    padding-bottom: 10em;
    margin-bottom: 10em;
  }

  .hero--container {
    grid-auto-columns: 1fr;
    grid-auto-flow: column;
    align-items: center;
  }
}

/* features */

.features {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 50%);
  display: grid;
  gap: 1.5rem;
  padding: 1.5em;
  border-radius: 0.75rem;
}

.feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature__icon {
  display: grid;
  place-items: center;
  width: 6.25rem;
  aspect-ratio: 1;
  background-color: hsla(0, 0%, 100%, 0.25);
  padding: 0.5em;
  border-radius: 0.5rem;
}

@media screen and (width>=50em) {
  .features {
    grid-auto-columns: 1fr;
    grid-auto-flow: column;
    align-items: center;
    padding: 2.5em;
    gap: 2rem;
  }
}

/* our-courses */

.our-courses {
  padding: 0 0 3.5em;
}

.courses__header {
  text-align: center;
}

.courses {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin: 2em 0;
}

.course {
  position: relative;
  flex: 1;
  padding: 0.75em;
  border-radius: 0.75rem;
}

.course__thumbnail {
  overflow: hidden;
  border-radius: 0.5rem;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  width: 100%;
  height: 10rem;
}

.course:nth-child(1) .course__thumbnail {
  background-image: url(../assets/course-thumbnail-1.png);
}

.course:nth-child(2) .course__thumbnail {
  background-image: url(../assets/course-thumbnail-2.png);
}

.course:nth-child(3) .course__thumbnail {
  background-image: url(../assets/course-thumbnail-3.png);
}

.course__category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0.5em 0 0.25em;
}

.course__metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 1em 0;
  padding: 1em 0;
  border-top: 1px dashed var(--clr-neutral-700);
}

.course__metrics div {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-body-x-sm);
  color: var(--clr-neutral-700);
}

.course .btn {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@media screen and (width>=35em) {
  .course__thumbnail {
    height: 16rem;
  }
}

@media screen and (width>=50em) {
  .our-courses {
    position: relative;
  }

  .courses {
    flex-direction: row;
    gap: 1rem;
  }

  .course__thumbnail {
    height: 12rem;
  }

  .our-courses::before {
    content: url(../assets/light-bulb.png);
    position: absolute;
    top: -10%;
    left: -6.25rem;
    transform: scale(0.75);
  }

  .our-courses::after {
    content: url(../assets/curly-arrow.svg);
    position: absolute;
    top: -10%;
    right: -6.25rem;
    transform: scale(0.75);
  }
}

/* premium-learning */

.premium-learning--container {
  display: grid;
  gap: 1rem;
}

.premium-learning__illustration {
  display: grid;
  place-items: center;
  background-image: url(../assets/learning-experience-bg.png);
  background-size: 75%;
  background-position: center center;
  background-repeat: no-repeat;
}

.premium-learning__illustration img {
  width: 50%;
}

.premium-learning__features {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.premium-learning--feature {
  display: flex;
  gap: 1rem;
}

.premium-learning--feature .feature__icon {
  width: 3rem;
  aspect-ratio: 1;
  background-color: var(--clr-primary-400);
  padding: 0.75em;
}

@media screen and (width>=50em) {
  .premium-learning--container {
    grid-auto-columns: 1fr;
    grid-auto-flow: column;
    align-items: center;
  }
}

/* our-teachers */

.our-teacher__header {
  text-align: center;
}

.teacher__avatar {
  border-radius: 0.5rem;
}

.teachers {
  flex-direction: column;
  gap: 2.5rem;
  margin: 2em 0;
}

.teacher {
  flex: 1;
  padding: 0.75em;
  border-radius: 0.75rem;
}

.teacher__avatar {
  overflow: hidden;
  border-radius: 0.5rem;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  width: 100%;
  height: 10rem;
}

.teacher:nth-child(1) .teacher__avatar {
  background-image: url(../assets/professor-1.png);
}

.teacher:nth-child(2) .teacher__avatar {
  background-image: url(../assets/professor-2.png);
}

.teacher:nth-child(3) .teacher__avatar {
  background-image: url(../assets/professor-3.png);
}

.teacher__meta-data {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.teacher__socials {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.teacher__socials a img {
  width: 1.5rem;
  aspect-ratio: 1;
}

@media screen and (width>=35em) {
  .teacher__avatar {
    height: 16rem;
  }
}

@media screen and (width>=50em) {
  .teachers {
    flex-direction: row;
    gap: 1rem;
  }

  .teacher__avatar {
    height: 12rem;
  }

  .our-teachers {
    position: relative;
    isolation: isolate;
  }

  .our-teachers::before {
    content: url(../assets/planet.svg);
    position: absolute;
    right: -6.25rem;
    top: 0;
    transform: scale(0.75);
  }

  .our-teachers:after {
    content: "";
    position: absolute;
    right: -25rem;
    top: -15%;
    width: 20rem;
    aspect-ratio: 1;
    transform: scale(1.25);
    filter: blur(100px);
    opacity: 0.25;
    border-radius: 50%;
    background-color: var(--clr-secondary-400);
  }
}

/* newsletter */

.newsletter {
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2em;
  margin: 0 auto 3.5em;
  border-radius: 1rem;
}

.newsletter-email {
  max-width: 25rem;
  width: 100%;
  background-color: var(--clr-neutral-100);
}

.newsletter-email {
  position: relative;
  background-color: var(--clr-neutral-100);
  border-radius: 100vw;
  padding: 0.375em;
}

#email {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  padding: 0.5em 1em;
}

.newsletter-email button {
  position: absolute;
  right: 0.375em;
  top: 50%;
  transform: translateY(-50%);
}

@media screen and (width>=50em) {
  .newsletter {
    position: relative;
    overflow: hidden;
    padding: 5em;
  }

  .newsletter::before {
    content: url(../assets/rings.svg);
    position: absolute;
    left: -10%;
    top: -50%;
    transform: rotate(270deg);
    width: 25%;
  }

  .newsletter::after {
    content: url(../assets/rings.svg);
    position: absolute;
    right: -10%;
    top: -50%;
    width: 25%;
  }

  .newsletter-email {
    position: relative;
  }

  .newsletter-email::before {
    content: url(../assets/curly-arrow-orange.png);
    position: absolute;
    left: -50%;
    bottom: -200%;
    transform: scale(0.75);
  }

  .newsletter-email::after {
    content: url(../assets/light-bulb.png);
    position: absolute;
    right: -50%;
    bottom: -125%;
    transform: scale(0.75);
  }
}

/* footer */

.footer--container {
  display: grid;
  gap: 1.5rem;
}

.footer__nav li {
  list-style: none;
}

.footer__nav li a {
  text-decoration: none;
  color: var(--clr-neutral-700);
}

.footer__nav li a:is(:hover, :focus) {
  color: var(--clr-primary-400);
}

@media screen and (width>=50em) {
  .footer--container {
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: 2rem;
  }
}

/* testimonial */

.testimonial__header {
  text-align: center;
}

.carousel__track-container {
  margin: 2em 0;
  padding: 1em;
  overflow: hidden;
}

.carousel__track {
  position: relative;
  height: 15.5rem;
  display: flex;
  gap: 1rem;
  transition: transform 0.3s ease-in-out;
}

.carousel__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  display: flex;
  gap: 1rem;
}

.student-review {
  flex: 1;
  padding: 1.5em;
}

.review-by {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.carousel__nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
}

.carousel__indicator {
  cursor: pointer;
  border: 0;
  border-radius: 50%;
  width: 0.75rem;
  height: 0.75rem;
  background-color: var(--clr-neutral-500);
}

.carousel__indicator.current-slide {
  width: 2rem;
  height: 0.75rem;
  border-radius: 100vw;
  background-color: var(--clr-primary-400);
}

@media screen and (width>=55em) {
  .testimonial {
    position: relative;
    isolation: isolate;
  }

  .testimonial::before {
    content: url(../assets/curly-arrow.svg);
    position: absolute;
    left: -6.25rem;
    bottom: 0;
    transform: rotate(180deg) scale(0.75);
  }

  .testimonial::after {
    content: "";
    position: absolute;
    z-index: -1;
    left: -25rem;
    bottom: -15%;
    width: 20rem;
    aspect-ratio: 1;
    transform: scale(1.25);
    filter: blur(100px);
    opacity: 0.25;
    border-radius: 50%;
    background-color: var(--clr-secondary-400);
  }
}