:root {
  --clr-bg-0: #fff;
  --clr-bg-1: #f5f5f5;
  --clr-bg-2: #eaeaea;
  --clr-brand-0: #2f2e82;
  --clr-fg-0: #000f;
  --clr-fg-1: #000c;
  --clr-fg-2: #0009;

  --doc-width: 60rem;
  --text-width: 40rem;
  --spc-0: 0.3125rem;
  --spc-1: calc(var(--spc-0) * 2);
  --spc-2: calc(var(--spc-0) * 4);
  --spc-3: calc(var(--spc-0) * 8);
  --spc-4: calc(var(--spc-0) * 16);
}

html {
  font-family: "Manrope", sans-serif;
  font-optical-sizing: auto;
  font-variant-ligatures: discretionary-ligatures;
}

body {
  background: var(--clr-bg-1);
  display: flex;
  flex-direction: column;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--clr-brand-0);
  font-weight: 800;
  margin-block: 1.4em 0.7em;
}

h1 {
  font-size: clamp(1.75rem, 1.45rem + 2vw, 2.25rem);
}

p,
ol,
ul,
dl {
  color: var(--clr-fg-1);
  font-size: clamp(1rem, 0.9625rem + 0.25vw, 1.0625rem);
  font-weight: 500;
  line-height: 1.5;
  margin-block: 0.7em;
}

.contain {
  margin: 0 auto;
  max-width: var(--doc-width);
  padding-inline: var(--spc-2);
}

header .primary {
  background: var(--clr-bg-0);
  padding-block: var(--spc-2);

  a.homepage {
    display: block;
    margin-inline: auto;
    width: fit-content;
  }
}

header .secondary {
  background: var(--clr-brand-0);
  padding-block: var(--spc-1);

  nav {
    container: main-nav / inline-size;
    text-box: cap alphabetic;
  }

  ul {
    align-items: center;
    display: flex;
    gap: var(--spc-2);
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  button,
  li {
    font-size: 0.9375rem;
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: 0.0375em;
    text-box: cap alphabetic;
  }

  button {
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
    display: none;
    padding: 0;
    width: 100%;
  }

  button:focus-visible {
    outline: none;
  }

  a {
    color: #fff;
    text-decoration: none;
  }
}

header #mobile-nav {
  background: var(--clr-brand-0);
  border: none;
  padding: var(--spc-2);
  height: 100%;
  width: 100%;

  .layout {
    display: grid;
    grid-template-rows: auto 1fr auto;
    height: 100%;
  }

  button {
    /* grid-row: 3 / 4; */
    text-align: end;
  }

  ul {
    align-items: center;
    display: flex;
    flex-direction: column;
    gap: var(--spc-3);
    grid-row: 2 / 3;
    /* height: 100%; */
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  li {
    font-size: 1.25rem;
  }
}

@container main-nav (width < 400px) {
  header .secondary {
    ul {
      display: none;
    }

    button {
      display: block;
      -webkit-tap-highlight-color: transparent;
    }
  }
}

main {
  flex-grow: 1;
  margin-block: var(--spc-4);
  text-box: cap alphabetic;

  .contain {
    max-width: var(--text-width);
  }

  .contain > :first-child {
    margin-block-start: 0;
  }

  .contain > :last-child {
    margin-block-end: 0;
  }
}

footer {
  line-height: 1.1;
  padding-block: var(--spc-2);
  text-align: center;
  text-box: cap alphabetic;
  text-wrap: pretty;

  small {
    color: var(--clr-fg-2);
    font-size: clamp(0.6875rem, 0.6125rem + 0.5vw, 0.8125rem);
    font-weight: 650;
  }
}