*,
*::before,
*::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  border: 0;
  outline: 0;
  font-size: inherit;
  line-height: inherit;
  font-weight: inherit;
  text-decoration: none;
  appearance: none;
  border-radius: 0;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

:root {
  --color-bg-primary: #000;
  --color-text-primary: #e6e6e6;
  --color-text-alt: hsl(0, 0%, 50%);
  --color-detail: hsl(0,0%,90%);
}

html::after,html::before {
    content: "";
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 9999;
    background: var(--color-text-primary);
    width: 1px
}

html::before {
    left: 0
}

html::after {
    right: 0
}

body {
  display: grid;
  grid-template-rows: 3rem 10rem;
  grid-auto-rows: auto;

  font-size: 13px;
  font-weight: 420;
  font-family: "Inter" , sans-serif;
  line-height: 20px;
}

@font-face {
    font-family: "Inter";
    font-style: oblique 0deg 10deg;
    font-weight: 100 900;
    font-display: swap;
    src: url(fonts/I.woff2)format("woff2")
}

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

.header {
  display: grid;
  grid-template-areas: "homelink menu";
  grid-template-columns: 1fr 1fr;
  position: sticky;
  top: 0;
  z-index: 9999;
}

.header__logo {
  grid-area: homelink;

  padding: 1rem;

  text-transform: uppercase;
}

.header__logo:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.header__nav {
  display: grid;
  grid-template-areas: "menu";
  grid-template-columns: 1fr;
}

.header__menu-button {
  grid-area: menu;

  padding: 1rem;

  text-align: left;
  text-transform: uppercase;

  cursor: pointer;
}

.header__menu-button:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.header__theme-button {
  display: none;

  text-align: left;
  text-transform: uppercase;

  cursor: pointer;
}

.header__theme-button:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.scheme-toggle {
  grid-area: scheme;
}

.page-title {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "text";
  align-content: center;
}

.page-title__text {
  grid-area: text;

  padding: 0 1rem;

  text-transform: uppercase;

}

.sub {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas:
    "title"
    "form"
    "text"
    "sponsor";
}

.sub__title {
  grid-area: title;

  padding: 1rem;

  text-transform: uppercase;
}

.sub__form {
  display: flex;
  grid-area: form;
}

.sub__email-input,
.sub__subscription-input {
  flex: 1 1 0;
}

.sub__email-input {
  padding: 1rem;
  width: 100%;

  text-transform: uppercase;
  appearance: none;
  border-radius: 0;
}

.sub__subscription-input:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.sub__subscription-input {
  cursor: pointer;
  transition-property: color, background;
  text-transform: uppercase;
  appearance: initial;
  border-radius: 0;
  padding: 1rem;
  text-align: center
}

.sub__sponser {
  grid-area: text;
  padding: 1rem 1rem 5rem;
}

.sub__sponser a {
  text-decoration: underline;
  text-decoration-color: var(--color-detail);
  text-decoration-thickness: 1px;
}

.sub__sponser a:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.sub__sponser-content {
  padding: 1rem;
  max-width: 65ch;
}

.about {
  display: flex;
  flex-direction: column;
}

.about__container {
  padding: 1rem;
}

.about__text {
  margin-bottom: 1rem;
}

.about__text a {
  text-decoration: underline;
  text-decoration-color: var(--color-detail);
  text-decoration-thickness: 1px;
}

.about__text a:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.about__head {
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.about__list {
  list-style-type: decimal-leading-zero;
  max-width: calc(var(--l-text) - 1.65rem);
  margin-top: 1rem;
  margin-left: 1.65rem;
  list-style-position: outside;
}

.about__item {
  margin-bottom: .25rem;
}

.about__item::marker {
  color: var(--color-text-alt);
}

.about__figure {
  padding: 3rem;
}

.footer {
  margin: 12rem 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas: "menu social""about about""newsletter newsletter";
  grid-gap: 5rem 0;
}

.footer a:hover {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

.footer__column {
  padding: 0 1rem;
  line-height: 1.25rem;
  text-transform: uppercase;
}

.footer__column dt {
  margin-bottom: 2rem;
}

.footer__about-column {
  grid-area: about;

}

.footer__about-column__title {
  margin-bottom: 2rem;
}

.footer__about-column__desc {
  text-transform: initial;
  max-width: 50ch;
}

.footer__menu-column {
  grid-area: menu;
}

.footer__social-column {
  grid-area: social;

}

.ba {
  box-shadow:
    inset 0 1px 0 0 var(--color-detail),
    inset 1px 0 0 var(--color-detail),
    0 1px 0 0 var(--color-detail),
    inset -1px 0 0 var(--color-detail);
}

.b {
  box-shadow:
    inset 0 1px 0 0 var(--color-detail),
    inset 1px 0 0 var(--color-detail),
    0 1px 0 0 var(--color-detail),
    1px 0 0 var(--color-detail)
}


@media (min-width: 750px) {
  .header__nav {
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "menu scheme";
  }

  .header__theme-button {
      display: inline-block;
      padding: .6rem 1rem;
      cursor: pointer;
  }
}

@media (min-width: 800px) {
  .footer {
    grid-template-columns: 1fr 1fr 2fr;
    grid-template-areas: "menu social about";
  }
}

@media (min-width: 1000px) {
  .page-title {
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "_ text";
  }

  .about {
    flex-direction: row;
  }

  .about__container,
  .about__figure {
    flex: 1 1 0;
  }
}

@media (min-width: 1300px) {
  .page-title {
      grid-template-columns: 1fr 2fr;
  }

  .sub {
    grid-template-columns: repeat(3, 1fr);
    grid-template-areas:
      "title form form"
      "sponsor text text";
  }
}

@media (min-width: 1700px) {
  .header {
      grid-template-columns: 1fr 3fr;
  }

  .header__nav {
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-areas: ". menu scheme";
  }

  .sub {
      grid-template-columns: repeat(4, 1fr);
      grid-template-areas:
        "title form form form"
        "sponsor text text text";
  }
}