/* variables */
:root {
  --color-yellow: hsl(35, 77%, 62%);
  --color-orange: hsl(5, 85%, 63%);
  --color-white: hsl(36, 100%, 99%);
  --color-light-grey: hsl(233, 8%, 79%);
  --color-dark-grey: hsl(236, 13%, 42%);
  --color-black: hsl(240, 100%, 5%);

  --text-xs: 0.75rem;
  --text-sm: 0.9375rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.75rem;
  --text-5xl: 3rem;

  --font-regular: 400;
  --font-bold: 600;
  --font-extrabold: 800;

  --bg: var(--color-white);
  --fg: var(--color-black);
  --fg-muted: var(--color-dark-grey);

  --bg-separator: var(--color-dark-grey);
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --bg-cta: var(--color-orange);
  --fg-cta: var(--color-black);
  --bg-cta-hover: var(--color-black);
  --fg-cta-hover: var(--color-white);

  --fg-nav-link-hover: var(--color-orange);

  --bg-aside: var(--color-black);
  --fg-aside-title: var(--color-yellow);
  --fg-aside-link-title: var(--color-white);
  --fg-aside-link-desc: var(--color-light-grey);
  --fg-aside-link-title-hover: var(--color-yellow);

  --fg-interest-title: var(--color-black);
  --fg-interest-number: var(--color-orange);
  --fg-interest-title-hover: var(--color-orange);

  --fs-body: var(--text-sm);
  --fs-heading: var(--text-4xl);

  --fs-cta: var(--text-xs);

  --fs-nav-links: var(--text-lg);

  --fs-aside-title: var(--text-3xl);
  --fs-aside-links: var(--text-xl);

  --fs-interest-number: var(--text-3xl);

  --fw-body: var(--font-regular);
  --fw-heading: var(--font-extrabold);

  --fw-cta: var(--font-extrabold);

  --fw-interest-number: var(--font-bold);
  --fw-interest-title: var(--font-extrabold);
}

/* utility classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

* {
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
}

a {
  text-decoration: none;
}

button {
  border: 0;
  background: transparent;
}

/* layout */
body {
  min-height: 100svh;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  font-family: "Inter", sans-serif;
  font-optical-sizing: auto;
  font-weight: var(--fw-body);
  font-style: normal;
  font-size: var(--fs-body);
}

p {
  line-height: 1.5;
  color: var(--fg-muted);
  font-size: var(--text-sm);
}

:is(header, main) {
  width: min(1110px, 91.47vw);
  margin-inline: auto;
}

header {
  margin-block-start: 28px;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* mobile nav */
#header-nav {
  position: fixed;
  top: 0;
  right: 0;

  width: 68.26vw;
  height: 100%;

  padding-block: 28px;
  padding-inline-start: 24px;
  padding-inline-end: 20px;

  display: flex;
  flex-direction: column;
  gap: 80px;

  background: var(--bg);

  z-index: 2;

  & ul {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  &[hidden] {
    display: none;
  }
}

#header-nav li {
  font-size: var(--fs-nav-links);
  color: var(--fg);

  a {
    color: var(--fg);

    &:hover {
      color: var(--fg-nav-link-hover);
    }
  }
}

#menu-open[hidden] {
  display: none;
}

#menu-close {
  align-self: flex-end;
}

#nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
  z-index: 1;
}

/* main */
main {
  margin-block: 32px 80px;
  display: grid;
  gap: 64px;
}

.hero-section {
  display: flex;
  flex-direction: column;
  gap: 24px;

  h1 {
    font-size: var(--fs-heading);
    font-weight: var(--fw-heading);
    line-height: 1.1;
  }
}

:is(.hero-content-wrapper, .hero-desc-cta-wrapper) {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cta {
  align-self: flex-start;

  padding: 1.33em 2.17em;

  font-size: var(--fs-cta);
  font-weight: var(--fw-cta);
  letter-spacing: 4px;

  text-transform: uppercase;

  background-color: var(--bg-cta);
  color: var(--fg-cta);

  &:hover {
    background-color: var(--bg-cta-hover);
    color: var(--fg-cta-hover);
  }
}

aside {
  padding: 26px 22px;
  background-color: var(--bg-aside);

  h2 {
    font-size: var(--fs-aside-title);
    color: var(--fg-aside-title);
  }

  a:hover h3 {
    color: var(--fg-aside-link-title-hover);
  }
}

aside li {
  padding-block-start: 36px;

  &:not(:last-child) {
    padding-block-end: 36px;
    border-bottom: 1px solid var(--bg-separator);
  }

  h3 {
    font-size: var(--fs-aside-links);
    color: var(--fg-aside-link-title);
  }

  p {
    margin-block-start: 0.75em;
    color: var(--fg-aside-link-desc);
  }
}

.interest-list {
  list-style: none;

  padding: 0;

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 32px;
}

.interest-list a {
  display: grid;
  grid-template-areas:
    "img number"
    "img title"
    "img desc";
  column-gap: 24px;
  place-content: start;

  img {
    grid-area: img;
  }

  span {
    grid-area: number;
    color: var(--fg-interest-number);
    font-size: var(--fs-interest-number);
    font-weight: var(--fw-interest-number);
  }

  h3 {
    grid-area: title;
    align-self: center;
    font-weight: var(--fw-interest-title);
    color: var(--fg-interest-title);
  }

  p {
    grid-area: desc;
    align-self: end;
  }

  &:hover h3 {
    color: var(--fg-interest-title-hover);
  }
}

@media (min-width: 64rem) {
  :is(#menu-open, #menu-close) {
    display: none;
  }

  #header-nav {
    position: static;
    background: transparent;
    display: flex;

    ul {
      flex-direction: row;
      justify-content: flex-end;
      gap: 40px;
    }
  }

  main {
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-areas:
      "hero hero aside"
      "hero hero aside"
      "interest interest interest";
    gap: 64px 30px;
  }

  .hero-section {
    grid-area: hero;

    h1 {
      font-size: var(--text-5xl);
    }
  }

  .hero-content-wrapper {
    flex-direction: row;
    gap: 90px;
  }

  .hero-desc-cta-wrapper {
    justify-content: space-between;
  }

  aside {
    grid-area: aside;
  }

  .interest-section {
    grid-area: interest;
  }

  .interest-list {
    flex-direction: row;
    justify-content: space-between;
  }
}