@font-face {
  font-family: Plus Jakarta Sans;
  src: url("assets/fonts/PlusJakartaSans-Italic-VariableFont_wght.ttf")
    format("truetype");
}
:root {
  --ff-Plus-Jakarta-Sans: "Plus Jakarta Sans", sans-serif;

  --fs-400: 1rem;
  --fs-500: 1.125rem;
  --fs-600: 1.25rem;
  --fs-700: 1.5rem;
  --fs-800: 2.5rem;

  --fw-500: 500;
  --fw-700: 700;
  --fw-800: 800;

  --clr-neutral-100: #fff;
  --clr-neutral-400: #83869a;
  --clr-neutral-800: #13183f;

  --clr-accent-400: #f74780;

  --clr-gradient-300: linear-gradient(180deg, #4851ff 0%, #f02aa6 100%);
  --clr-gradient-400: linear-gradient(180deg, #ff6f48 0%, #f02aa6 100%);
}

/*css reset*/
*,
*::before,
*::after {
  box-sizing: border-box;
}

h1,
.h1,
h2,
.h2,
h3,
h3,
h4,
.h4 {
  line-height: 1;
}

body,
h1,
h2,
h3,
h4,
p {
  margin: 0;
}

ul[class],
ol[class] {
  list-style-type: none;
  padding: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

@media (min-width: 90rem) {
  :root {
    --fs-400: 1.125rem;
    --fs-600: 1.5rem;
    --fs-700: 2rem;
    --fs-800: 3.5rem;
  }
}

body {
  font-family: var(--ff-Plus-Jakarta-Sans);
  font-size: var(--fs-400);
  font-weight: var(--fw-500);
  line-height: 1.6;
  color: var(--clr-neutral-400);

}

/* typography */
h1,
h2 {
  font-weight: var(--fw-800);
}
h1 {
  color: var(--clr-neutral-800);
}

.page-title {
  font-size: var(--fs-800);
}

a {
  font-weight: var(--fw-700);
}

/* general style */

.btn {
  text-decoration: none;
  display: inline-block;
  background: var(--accent, var(--clr-neutral-800));
  color: var(--clr-neutral-100);
  padding: 1rem 2.5rem;
  border-radius: 1.96875rem;
}

.btn:is(:hover, :focus){
  opacity: 0.5;
}

:where(.primary-header, .primary-footer) .btn {
  padding: 0.65rem 1.5rem;
}

@media (min-width: 90rem) {
  .btn {
    padding: 1rem 2rem;
  }
}



/* general layout */

.container {
  max-width: 70rem;
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 48rem) {
  .container {
    padding-inline: 2.5rem;
  }
}

@media (min-width: 90rem) {
  .container {
    padding-inline: 0;
  }
}

.flow-content > * + * {
  margin-top: var(--flow-spacer, 1em);
}

/* courses preview grid */
.popular-course-preview{
  padding-bottom: 5rem;
}

.course-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(21.125rem, 1fr));
  gap: 2.5rem;
  margin: 0;
}

.course-preview-grid article {
  position: relative;
  padding: 3.5rem 1.31rem 2rem 2rem;
  border-radius: 0.625rem;
  box-shadow: 0 25px 50px 0 rgba(6, 22, 141, 0.04);
  height: 100%;
}

.course-preview-grid h3{
  font-weight: var(--fw-800);
  color: var(--clr-neutral-800);
}

.course-preview-grid img {
  position: absolute;
  top: -1.5rem;
  left: 2rem;
}

.course-preview-grid div {
  border-radius: 0.625rem;
  padding: 2rem 1.5rem;
  background: var(--clr-gradient-400);
  color: var(--clr-neutral-100);
}

.course-preview-grid a {
  text-decoration: none;
  color: var(--clr-accent-400);
}

.course-preview-grid a:is(:hover,:focus) {
  opacity: 0.5;
}


@media (min-width: 48rem) {
  .course-preview-grid {
    gap: 2rem 0.6rem;
  }

  .course-preview-grid div {
    border-radius: 0.625rem;
    padding-top: 3.5rem;
    height: 100%;
  }
}
@media (min-width: 90rem) {

  .popular-course-preview{
    padding-bottom: 8.75rem;
  }
  .course-preview-grid {
    gap: 5rem 1.8rem;
  }

  .course-preview-grid div{
    padding-top: 4rem;
  }
}

.course-preview-grid a {
  display: inline-block;
}

/* header */
.primary-header {
  padding-top: 1rem;
}

.primary-nav__list {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0;
}

@media (min-width: 48rem) {
  .primary-header {
    padding-top: 1.5rem;
  }
}

@media (min-width: 90rem) {
}

/* skilled page */

.intro {
  --accent: var(--clr-accent-400);
  padding-top: 2rem;
}
.intro__grid {
  display: grid;
}

.intro__grid img {
  margin-inline: auto;
}


@media (min-width: 48rem) {
  .intro {
    --flow-spacer: 1.5rem;
    padding-top: 6rem;
    padding-bottom: 15rem;
  }

  .intro__grid {
    grid-template-columns: 60% 1fr;
    gap: clamp(0rem, calc(-9.14rem + 19.05vw), 8rem);
  }

  .intro__grid img {
    position: absolute;
    top: -4rem;
    transform: translateX(-5rem);
    z-index: -1;
  }
}

@media (min-width: 90rem) {
  .intro {
    padding-top: 10.75rem;
    padding-bottom: 15.6rem;
  }

  .intro__grid {
    grid-template-columns: 40% 1fr;
  }

  .intro__grid img {
    top: -9rem;
    transform: revert;
  }
}

.primary-footer {
  --accent: var(--clr-gradient-300);
  padding: 2.25rem 1rem;
  background-color: var(--clr-neutral-800);
}