* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Gill Sans", "Gill Sans MT", Calibri, "Trebuchet MS", sans-serif;
}

body {
  background: #222;
}

#strength {
  text-align: center;
  font-size: 1.5rem;
}

h1 {
  color: mediumspringgreen;
  font-size: 3.3rem;
  font-weight: 800;
  text-align: center;
  margin-top: 2rem;
  margin-bottom: 1rem;
  text-shadow: 0 0 10px rgba(0, 250, 154, 0.4);
  letter-spacing: 1px;
  transition: color 300ms ease;
}

h1:hover {
  color: #00ffae;
}

.description {
  color: mediumspringgreen;
  font-size: 1.4rem;
  text-align: center;
  margin-bottom: 2rem;
  letter-spacing: 0.5px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
  transition: color 300ms ease;
}

.description:hover {
  color: #00ffae;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.input {
  all: unset;
  width: 250px;
  padding: 0.3em 0.9em;
  border: mediumspringgreen solid 0.15em;
  border-radius: 0.25em;
  font-size: 1.2em;
  font-family: inherit;
  font-size: 1.4em;
  color: mediumspringgreen;
  font-weight: 500;
  background-color: transparent;
  transition: border 300ms, color 300ms, background 300ms;
}

.input::placeholder {
  color: mediumspringgreen;
  opacity: 0.6;
  transition: color 300ms;
}

.input:focus {
  border-color: rgb(0, 250, 154);
  color: #111;
  background-color: rgb(0, 250, 154, 0.1);
}

.input:focus::placeholder {
  color: mediumspringgreen;
}

.button {
  all: unset;
  display: flex;
  align-items: center;
  position: relative;
  padding: 0.4em 1em;
  border: mediumspringgreen solid 0.15em;
  border-radius: 0.25em;
  color: mediumspringgreen;
  font-family: inherit;
  font-size: 1.3em;
  font-weight: 500;
  cursor: pointer;
  overflow: hidden;
  transition: border 300ms, color 300ms;
  user-select: none;
}

.button:hover {
  color: #212121;
  background-color: mediumspringgreen;
  font-weight: 700;
}

.button:active {
  background-color: mediumspringgreen;
  color: #111;
  font-weight: 700;
}

button p {
  margin: 0;
  transition: color 300ms;
}

.bar {
  width: 300px;
  height: 6px;
  background: #555;
  border-radius: 3px;
  margin: 0 auto 10px auto;
  transition: background 0.3s;
}
.bar-fill {
  width: 0%;
  height: 100%;
  background: red;
  border-radius: 3px;
  transition: width 0.3s, background 0.3s;
}

/* 768 */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
  }

  .description {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
  }

  .container {
    flex-direction: column;
    gap: 0.8rem;
  }

  .input {
    width: 80%;
    font-size: 1.2rem;
  }

  .button {
    width: 80%;
    justify-content: center;
    font-size: 1.2rem;
  }
}

/* 480 */
@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  .description {
    font-size: 1rem;
    line-height: 1.4;
  }

  .input,
  .button {
    width: 90%;
    font-size: 1.1rem;
    padding: 0.4em;
  }
}