:root {
  --clr-primary: hsl(25, 97%, 53%);
  --clr-white: hsl(0, 0%, 100%);
  --clr-light-grey: hsl(217, 12%, 63%);
  --clr-medium-grey: hsl(216, 12%, 54%);
  --clr-dark-blue: hsl(213, 19%, 18%);
  --clr-very-dark-blue: hsl(216, 12%, 8%);
}

* {box-sizing: border-box;}

html {font-family: 'Overpass', sans-serif;}

body {font-size: 15px;}

body, 
h1, 
h2, 
p {
  margin: 0;
  padding: 0;
}

body {
  position: relative;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--clr-very-dark-blue);
}

main {
  height: 415px;
  max-width: 410px;
  padding: 2em;
  background-color: hsla(213, 19%, 18%, 0.7);
  border-radius: 2em;
}

.star-background {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 3.25em;
  height: 3.25em;
  border-radius: 50%;
  background-color: var(--clr-dark-blue);
}

.form-title {
  color: var(--clr-white);
  font-weight: 700;
  margin-top: 1em;
}

.form-text {
  color: var(--clr-medium-grey);
  margin-top: 1em;
}

.ratings-container {
  position: relative;
  display: flex;
  justify-content: space-between;
  margin-top: 2em;
}

.label {
  display: flex;
  justify-content: center;
  align-items: center;

  width: 3.25em;
  height: 3.25em;

  color: var(--clr-medium-grey);
  background-color: var(--clr-dark-blue);
  border-radius: 50%;
}

/* class for selected option */
.selected {
  color: var(--clr-white);
  background-color: var(--clr-light-grey);
}



.label:hover {
  color: var(--clr-white);
  background-color: var(--clr-primary);
  cursor: pointer;
}

label:hover {
  cursor: pointer;
}

.ratings-container input[type=radio] {
  display: none;
}

/* notification when no option is selected */
.popup {
  position: absolute;
  left: 50%;
  top: 55px;
  transform: translateX(-50%);
  text-align: center;
  
  width: 100%;

  font-size: 1.25em;
  color: var(--clr-white);
  
  opacity: 0;
}

.popup.visible {
  opacity: 1.0;
  transition: opacity 250ms linear;
}

/* submit button */

button {
  display: block;
  margin-top: 2em;
  padding: 1em;
  width: 100%;

  color: hsla(0, 0%, 100%, 0.8);
  font-size: 1em;
  font-weight: 700;
  letter-spacing: 2px;

  background-color: var(--clr-primary);

  border: none;
  border-radius: 100vw;
}

button:hover {
  cursor: pointer;
  color: var(--clr-primary);
  background-color: var(--clr-white);
}

/* information shown after submitting a rating */

.submit-card {
  display: none;
  text-align: center;
  padding: 1em;
}

.submitted-confirm-text {
  margin-top: 1em;
  margin-inline: auto;
  padding: 0.5em 1em;
  width: fit-content;

  color: hsla(25, 97%, 53%, 0.8);
  background-color:hsla(213, 19%, 18%, 0.7);
  border-radius: 100vw;
}

.submitted-title {
  margin-top: 1em;
  color: var(--clr-white);
}

.submitted-text {
  margin-top: 1em;
  color: var(--clr-medium-grey);
}

/* footer */

footer {
  position: absolute;
  bottom: 10px;
  color: var(--clr-white);
}

footer a {
  color: inherit;
}


/* mobile design */

@media (max-width: 500px) {

  /* before submitting */
  main {
    max-width: 325px;
    height: auto;
    padding: 1.25em 1.5em 2em;
    border-radius: 1em;
  }

  .star-background {
    width: 2.5em;
    height: 2.5em;
  }

  .star-icon {
    width: 40%;
  }

  .form-title {
    margin-top: 1em;
    font-size: 1.5em;
  }

  p {
    letter-spacing: -1px;;
  }

  .label {
    width: 2.75em;
    height: 2.75em;
  }

  button {
    font-size: 0.9em;
  }

  /* after submitting */
  .phone-icon {
    max-width: 60%;
    height: auto;
  }

  .submitted-title {
    font-size: 1.5em;
  }
}