:root {
  /* colors */
  --c-text: rgb(0, 0, 0);
  --c-primary: #daf4ff; /* primary color for accents */
  --c-background-1: rgb(255, 255, 255);
  --c-background-2: rgb(250, 250, 250);
  --c-background-3: rgb(230, 230, 230);

  /* elements */
  --e-header-height: 80px; /* dont change */
  --e-big-shadow: 0px 2px 15px rgba(0, 0, 0, 0.1);
  --e-small-shadow: 0px 1px 10px rgba(0, 0, 0, 0.08);
}

/* - - - FONT - - - */
@font-face {
  font-family: "Inter";
  src: url("../font/inter-medium.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../font/inter-bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../font/inter-extrabold.ttf") format("truetype");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../font/inter-lightitalic.ttf") format("truetype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

/* - - - GENERAL ELEMENTS - - - */
* {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", sans-serif;
  font-variation-settings: "wght" 500;

  color: var(--c-text);
}

a {
  color: var(--c-text);
}

p,
li,
th,
td,
a,
input {
  font-size: 14px;
}

/* - - - TEXT CLASSES - - - */
.bold {
  font-weight: 900;
}

.italic {
  font-weight: 300;
}

/* api text */
span[data-api] {
  font-weight: 600;
  color: red;
}

/* - - - NAVIGATION - - - */
header {
  width: 100%;

  position: fixed;
  top: 0;
  z-index: 10;

  display: flex;
  flex-direction: row;
  justify-content: center;

  background-color: var(--c-background-1);
  border-bottom: solid var(--c-background-3) 1px;

  box-shadow: var(--e-big-shadow);
}

header > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;

  padding: 10px 15px 5px 15px;
}

header > div img {
  width: 100%;
  height: auto;
}

header nav {
  display: flex;
  gap: 10px;
}

/* header a tag states */
header nav a {
  outline: solid rgba(255, 255, 255, 0) 1px;
  border-radius: 50px;
  padding: 3px 9px;
  text-decoration: none;

  transition: background-color 0.12s ease, outline 0.12s ease,
    transform 0.12s ease;
}

header nav a.active {
  background-color: var(--c-primary);
  outline: solid var(--c-primary) 1px;
}

header nav a:hover {
  outline: solid var(--c-primary) 1px;
}

header nav a:active {
  transform: scale(0.95);
}

/* header language switcher */
header #language_switcher button {
  position: absolute;
  top: 7px;
  right: 12px;

  width: 30px;
  height: 30px;

  border: none;

  overflow: hidden;
  cursor: pointer;

  background-color: transparent;

  transition: transform 0.08s ease;
}

header #language_switcher button:active {
  transform: scale(0.95);
}

header #language_switcher button img {
  width: 100%;
  height: 100%;

  position: absolute;
  top: 0;
  left: 0;

  transition: all 0.12s ease;
}

header #language_switcher button img:nth-child(1):hover {
  opacity: 0;
}

header #language_switcher button img:nth-child(2) {
  opacity: 0;
}

header #language_switcher button img:nth-child(2):hover {
  opacity: 1;
}

@media screen and (max-width: 910px) {
  header nav {
    display: grid;
    grid-template-rows: repeat(3, 1fr);
    grid-auto-flow: column;
    gap: 5px;
  }

  header #language_switcher button {
    top: auto;

    bottom: 7px;
    right: 12px;
  }

  header nav :first-child {
    position: absolute;
    translate: -40px 22px;

    width: 32px;
    height: 32px;

    font-size: 0;

    background-image: url(../img/icon/home.png);
    background-position: center;
    background-size: contain;
    background-repeat: no-repeat;

    border-radius: 0;

    padding: 0;
  }

  header nav :first-child.active {
    background-color: transparent;
    outline: none;
  }

  header nav :last-child {
    grid-column-start: 1;
    grid-row-start: 3;
  }
}

/* - - - MAIN - - - */
main {
  max-width: 100%;
  min-height: calc(100vh - var(--e-header-height) - 120px);

  padding: 20px;
  padding-top: calc(var(--e-header-height) + 50px + 20px);
  padding-bottom: 60px;

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 60px;
}

@media screen and (max-width: 680px) {
  main {
    padding-left: 5px;
    padding-right: 5px;
  }
}

section {
  width: calc(100% - 40px);
  max-width: 1070px;

  border-radius: 20px;
  border: solid var(--c-background-3) 1px;

  padding: 15px;

  background-color: var(--c-background-2);
  box-shadow: var(--e-big-shadow);
}

section h1 {
  font-size: 1.85em;
  margin-bottom: 4px;
}

section h2 {
  font-size: 1.45em;
  margin: 28px 0 4px 0;
}

section h3 {
  font-size: 1.25em;
  margin: 16px 0 4px 0;
}

section ul {
  padding: 4px 0 4px 20px;
}

/* - - - FOOTER - - - */
footer {
  padding: 20px;

  display: flex;
}

footer > div {
  width: 100%;

  background-color: var(--c-background-2);

  border-radius: 20px;
  border: solid var(--c-background-3) 1px;
  box-shadow: 0px 6px 0px var(--c-background-3);

  padding: 15px;

  box-shadow: var(--e-big-shadow);
}

footer > div > div {
  height: 100%;

  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

footer div:nth-child(1) {
  float: left;
}

footer div:nth-child(2) {
  float: right;

  margin-left: 20px;
  text-align: end;
}

@media screen and (max-width: 680px) {
  footer {
    padding: 5px;
  }
}

@media screen and (max-width: 480px) {
  footer > div {
    display: flex;
    flex-direction: column;
  }

  footer > div > div {
    height: 100%;

    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  footer div:nth-child(1) {
    float: none;
    text-align: center;

    margin-bottom: 20px;
  }

  footer div:nth-child(2) {
    float: none;
    margin: 0;

    display: grid;
    grid-template-rows: repeat(2, 1fr);
    grid-auto-flow: column;
  }

  footer div:nth-child(2) :nth-child(2),
  footer div:nth-child(2) :nth-child(3) {
    text-align: left;
  }
}