@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600&display=swap');

/* root variables */
:root {
  --light: #ededef;
  --dark: #151515;
  --grey: #8a8a8a;
  --orange: #fd6037;
  --font-sm: .9rem;
  --font-md: 1.3rem;
  --b-radius: 6px;
}

/* css reset */
* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  color: var(--light);
}

html, 
body {
  font-family: 'Space Grotesk', sans-serif;
  background-color: var(--dark);
}

/* main styles */
.btn {
  position: relative;
  font-weight: 600;
  font-size: var(--font-md);
  color: var(--light);
  background-color: var(--orange);
  border: none;
  border-radius: var(--b-radius);
  -webkit-transition: .3s;
  -o-transition: .3s;
  transition: .3s;
  cursor: pointer;
}

.btn:hover { opacity: 75%; }

.btn:active { opacity: 1; }

.btn-disabled {
  background-color: var(--grey);
  opacity: 80%;
  cursor: not-allowed;
}

.btn-disabled:hover { opacity: 80%; }

.btn-disabled:active { opacity: 80%; }

.tooltip {
  padding: 8px;
  font-size: var(--font-sm);
  font-weight: 400;
  opacity: 0;
  position: fixed;
  background-color: black;
  color: white;
  top: 0;
  left: 0;
  z-index: 999;
}

.btn:hover .tooltip { opacity: 1; }

.submited {
  box-shadow: 0 0 4px 3px var(--orange);
  -webkit-box-shadow: 0 0 4px 3px var(--orange);
  -moz-box-shadow: 0 0 4px 3px var(--orange);
}

.hidden { display: none; }

input[type="text"], input[type="number"], textarea {
  display: block;
  margin: 10px 0;
  padding: 8px;
  width: 120px;
  color: var(--dark);
  background-color: var(--light);
  border: none;
  border-radius: var(--b-radius);
}

hr { border-color: var(--grey); }

/* container */
.container {
  margin: 50px auto;
  padding: 20px;
  max-width: 600px;
  font-weight: 600;
  text-align: center;
}

.container h1 span { color: var(--orange); }

.container-desc {
  margin: 8px 10px;
  font-weight: 400;
  color: var(--grey);
}

.container-form {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: space-evenly;
  -ms-flex-pack: space-evenly;
  justify-content: space-evenly;
  -webkit-box-align: center;
  -ms-flex-align: center;
  margin: 25px 0;
  align-items: center;
  text-align: left;
}

.max-text {
  display: block;
  font-weight: 400;
  font-size: var(--font-sm);
  color: var(--grey);
}

.container-right label {
  display: block;
  margin: 8px 0;
}

.btn-submit {
  margin-bottom: 25px;
  padding: 8px;
  width: 100%;
}

.container-result {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  gap: 25px;
  margin-top: 12px;
}

.input-result { 
  width: 40%; 
  transition: .3s;
  -webkit-transition: .3s;
  -o-transition: .3s;
}

.btn-copy {
  padding: 10px 14px;
  font-size: var(--font-md);
}

footer {
  text-align: center;
}