@import url('https://fonts.googleapis.com/css2?family=Libre+Franklin:ital,wght@0,100..900;1,100..900&display=swap');

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  /* neutral */
  --Gray: hsl(0, 0%, 59%);
  --Very-Dark-Blue: hsl(209, 33%, 12%);

  /* primary */
  --Blue: hsl(223, 87%, 63%);

  /* secondary */
  --Light-Red: hsl(354, 100%, 66%);
  --Pale-Blue: hsl(223, 100%, 88%);

  /* fw */
  --fw-300: 300;
  --fw-600: 600;
  --fw-700: 700;

  font-family: 'Libre Franklin', sans-serif;
  font-size: 1.25rem;
}

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

main,
footer {
  text-align: center;
}

main {
  padding-inline: 1.5em;
  min-height: 100vh;
}

footer {
  padding: 2em 0;
}

.d-none {
  display: none !important;
}

.title {
  font-size: 1.25rem;
  font-weight: var(--fw-700);
  text-transform: uppercase;
  margin-top: 2.5em;
}

.subtitle {
  color: var(--Gray);
  font-size: 1.25rem;
  font-weight: var(--fw-300);
  margin-top: 1.5em;

  & > strong {
    color: var(--Very-Dark-Blue);
    font-weight: var(--fw-700);
  }

  @media (min-width: 40em) {
    margin-top: 1em;
    font-size: 1.75rem;
  }
}

.notify-text {
  color: var(--Very-Dark-Blue);
  font-size: 0.7rem;
  margin-top: 1.5em;

  @media (min-width: 40em) {
    margin-top: 1em;
  }
}

.notification-form {
  margin-top: 1.5em;

  & > input,
  & > button {
    border: 1px solid var(--Pale-Blue);
    border-radius: 5em;
    font-family: inherit;
    font-weight: var(--fw-300);
    padding: 1em 2em;
    width: 100%;
    display: block;

    @media (min-width: 40em) {
      width: auto;
      display: inline-block;
    }
  }

  & > input {
    @media (min-width: 40em) {
      padding: 1em 1.5em;
      min-width: 25em;
    }
  }

  & > input:focus-visible {
    outline: none;
  }

  & > input::placeholder {
    color: var(--Pale-Blue);
  }

  & > input.invalid {
    border-color: var(--Light-Red);
  }

  & > .feedback {
    color: var(--Light-Red);
    font-size: 0.75rem;
    font-weight: var(--fw-300);

    @media (min-width: 40em) {
      display: none;
    }
  }

  & > button {
    border: none;
    color: white;
    background: var(--Blue);
    font-weight: var(--fw-600);
    margin-top: 1em;
    cursor: pointer;

    &:hover {
      box-shadow: 0px 5px 10px 0px rgba(79, 125, 243, 0.75);
    }

    @media (min-width: 40em) {
      padding: 1em 2.5em;
    }
  }

  & > .feedback-desktop {
    color: var(--Light-Red);
    text-align: left;
    font-size: 0.75rem;
    font-weight: var(--fw-300);
    margin: 0.5em 0 0 1.5em;
    display: block;

    @media (max-width: 40em) {
      display: none;
    }
  }

  @media (min-width: 40em) {
    display: inline-block;
    margin-inline: auto;
  }
}

.hero-img {
  margin-top: 3em;

  @media (min-width: 40em) {
    max-width: 25em;
    margin-inline: auto;
  }
}

.social {
  color: var(--Blue);
  font-size: 1rem;
  gap: 1em;
  display: flex;
  justify-content: center;

  & > i {
    border: 1px solid var(--Pale-Blue);
    border-radius: 100%;
    width: 2.5em;
    display: flex;
    justify-content: center;
    align-items: center;
    aspect-ratio: 1/1;
    cursor: pointer;

    &:hover {
      color: white;
      background: var(--Blue);
    }
  }
}

.copyright {
  color: var(--Gray);
  font-size: 0.85rem;
  font-weight: var(--fw-300);
  margin-top: 2em;
}