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

  -webkit-tap-highlight-color: transparent;
}

:root {
  --default-color: #f5f5f5;
  --background-color: #212121;
  --primary-color: #2cadf6;
  --secondary-color: #a5a5a5;
  --lowercase: #63add6;
  --uppercase: #55dfed;
  --number: #58d6bf;
  --symbol: #4d8cf7;
  --range: #ed7461;
}

body {
  color: var(--default-color);
  font-family: "Roboto Mono", sans-serif;
}

#hero {
  position: absolute;
  width: 100vw;
  height: 100%;
  display: grid;
  place-items: center;
  background-color: var(--background-color);
}

main {
  position: relative;
  width: 100%;
  max-width: 800px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  user-select: none;
}

main h1 {
  text-align: center;
  margin-bottom: 30px;
}

.password-text-container {
  position: relative;
  width: 95%;
  max-width: 550px;
  min-height: fit-content;
  height: 100px;
  padding: 10px 20px;
  margin: 20px 0;
  font-size: 24px;
  display: grid;
  place-items: center;
  text-align: center;
  border-radius: 20px;
  box-shadow: inset 3px 3px 5px #1b1a1a, inset -3px -3px 5px #2b2b2b;
  cursor: copy;
  word-break: break-all;
}

#password {
  user-select: text;
}

#password .char_lower {
  color: var(--lowercase);
}

#password .char_upper {
  color: var(--uppercase);
}

#password .char_number {
  color: var(--number);
}

#password .char_symbol {
  color: var(--symbol);
}

#copy {
  position: absolute;
  right: 15px;
  bottom: 15px;
  font-size: 14px;
  color: var(--secondary-color);
}

#copy.copied {
  color: var(--default-color);
}

.password-controls-wrapper {
  width: 80%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 20px 0;
}

.password-controls-wrapper label {
  font-size: 18px;
}

.range-group {
  width: 100%;
}

.range-group label span {
  color: var(--range);
}

.checkbox-input-wrapper {
  display: flex;
  justify-content: space-around;
  gap: 40px;
  margin-top: 20px;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  outline: 0;
  border: 0;
  margin: 20px 0;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  background: var(--secondary-color);
  width: 100%;
  height: 3px;
  border-radius: 2em;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 25px;
  height: 25px;
  border-radius: 100%;
  background-color: var(--range);
  margin-top: -10px;
}

input[type="checkbox"] {
  display: none;
}

.checkbox-group label {
  padding: 10px 20px;
  border-radius: 20px;
  color: var(--secondary-color);
  cursor: pointer;
  box-shadow: 3px 3px 5px #1b1a1a, -3px -3px 5px #2b2b2b;
}

input[type="checkbox"]:checked + label {
  box-shadow: inset 3px 3px 5px #1b1a1a, inset -3px -3px 5px #2b2b2b;
}

#lowercase:checked + label {
  color: var(--lowercase);
}

#uppercase:checked + label {
  color: var(--uppercase);
}

#number:checked + label {
  color: var(--number);
}

#symbol:checked + label {
  color: var(--symbol);
}

button {
  border: none;
  outline: none;
  background: none;
  cursor: pointer;
  color: var(--primary-color);
  font-size: 20px;
  padding: 10px 15px;
  margin: 20px 0;
  border-radius: 20px;
  box-shadow: 3px 3px 5px #1b1a1a, -3px -3px 5px #2b2b2b;
}

button:active {
  box-shadow: inset 3px 3px 5px #1b1a1a, inset -3px -3px 5px #2b2b2b;
  transform: scale(0.99);
}

@media screen and (max-width: 450px) {
  main h1 {
    font-size: 24px;
    margin-bottom: 20px;
  }

  .password-text-container {
    border-radius: 10px;
  }

  #copy {
    right: 10px;
    bottom: 10px;
    font-size: 12px;
  }

  .checkbox-group label {
    border-radius: 10px;
  }

  button {
    border-radius: 10px;
  }
}