* {
  box-sizing: border-box;
}

body {
  margin: 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #fafafa;
  color: #212121;
  line-height: 1.5;
}

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

a {
  display: inline-block;
  text-decoration: none;
  transition: var(--transition);

  &:hover {
    text-decoration: underline;
  }
}

input[type='text'],
input[type='email'],
input[type='password'],
input[type='url'],
input[type='search'],
input[type='tel'],
textarea,
.categories-list ul > li {
  border: 1px solid #808080;
  border-radius: 4px;
  letter-spacing: 0.04em;
  padding: 7px 16px;
  width: 100%;
  transition: var(--transition);

  &:focus,
  &:focus-visible {
    outline: 1px solid #808080;
  }
}
#name-input {
  width: 408px;
}
label {
  width: 408px;
  display: block;
  letter-spacing: 0.04em;
}

button,
input[type='button'] {
  display: inline-block;
  border-radius: 8px;
  padding: 8px 16px;
  background: #4e75ff;
  border: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);

  &:hover {
    background: #6c8cff;
  }
}

/* Categories list */
.categories-list {
  &,
  ul,
  li {
    list-style: none;
    margin-top: 0;
    padding: 0;
  }

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

  .item {
    display: flex;
    flex-direction: column;
    gap: 16px;
    border-radius: 8px;
    padding: 16px;
    background: #f6f6fe;
  }

  h2 {
    margin: 0;
    font-weight: 600;
    font-size: 24px;
    line-height: 1.33333;
    letter-spacing: 0.04em;
  }

  ul {
    display: grid;
    gap: 8px;
  }
}

/* Gallery */
.gallery {
  display: flex;
  grid-column-gap: 24px;
  grid-row-gap: 48px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;

  img {
    object-fit: cover;
    height: 100%;
    width: 100%;
  }
}

.gallery__item {
  flex: 0 0 calc((100% / 3) - (12px * 2));
}

/* Input text component */
.output-text {
  margin-top: 16px;
  margin-bottom: 0;
  font-weight: 600;
  font-size: 24px;
  line-height: 1.33333;
  letter-spacing: 0.04em;
  color: #2e2f42;
}

/* Login form */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 8px;

  input,
  button {
    margin-top: 8px;
  }

  button {
    align-self: flex-start;
  }
}

/* Widget */
.widget {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;

  p {
    margin: 0;
  }
}