/* import custom fonts using @font-face with local files */
@font-face {
  font-family: "Poppins-Regular";
  src: url("./fonts/Poppins-Regular.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "Poppins-Italic";
  src: url("./fonts/Poppins-Italic.ttf") format("truetype");
  font-weight: 500;
  font-style: italic;
}

@font-face {
  font-family: "Poppins-Bold";
  src: url("./fonts/Poppins-Bold.ttf") format("truetype");
  font-weight: bold;
  font-style: normal;
}

@font-face {
  font-family: "Poppins-ExtraBoldItalic";
  src: url("./fonts/Poppins-ExtraBoldItalic.ttf") format("truetype");
  font-weight: bold;
  font-style: italic;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

:root {
  --purple-500: hsl(259, 100%, 65%);
  --red-400: hsl(0, 100%, 67%);
  --white: hsl(0, 100%, 100%);
  --grey-100: hsl(0, 0%, 94%);
  --grey-200: hsl(0, 0%, 86%);
  --grey-500: hsl(0, 1%, 44%);
  --black: hsl(0, 0%, 0%);
}

body {
  background-color: var(--grey-200);
}

main {
  background-color: var(--white);
  width: 90%;
  margin: 0 auto;
  margin-top: clamp(2rem, 10vw, 10rem);
  padding: 2rem;
  border-radius: 1rem;
  border-bottom-right-radius: 10rem;
  transition: width 0.3s ease;
}

.form-fields {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: flex-end;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.divider {
  position: relative;
  height: 6rem;
}

hr {
  position: absolute;
  top: 50%;
  width: 100%;
  border: none;
  margin: 0;
  border-top: 1px solid var(--grey-200);
}

form label {
  color: var(--grey-500);
  font-family: "Poppins-Bold", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  margin-bottom: 0.5rem;
  display: block;
  text-align: left;
}

form input {
  border-color: var(--grey-200);
  border-width: 1px;
  border-radius: 5px;
  border-style: solid;
  padding: 1rem;
  font-size: 2rem;
  font-family: "Poppins-Bold", sans-serif;
  width: 7rem;
  background-color: var(--white);
}

input:-webkit-autofill {
  -webkit-box-shadow: 0 0 0 1000px var(--white) inset;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

input[type="number"] {
  -moz-appearance: textfield;
}

input:focus {
  outline: 1px solid var(--purple-500);
  outline-offset: -1px;
  cursor: pointer;
}

.field.error label {
  color: var(--red-400);
}
.field.error input {
  border-color: var(--red-400);
}

.submit-button {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: none;
  background-color: var(--purple-500);
  border-radius: 50%;
  width: 6rem;
  height: 6rem;
  cursor: pointer;
  z-index: 1;
}

.submit-button img {
  width: 3rem;
}

.submit-button:active,
.submit-button:hover {
  background-color: var(--black);
}

.submit-button:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

section {
  margin-top: 1rem;
  font-family: "Poppins-ExtraBoldItalic", sans-serif;
  font-size: 5rem;
}

section output {
  color: var(--purple-500);
}

@media (prefers-reduced-motion: no-preference) {
  .animate {
    animation: fadeSlideIn 0.5s ease;
  }
}

.error-message {
  color: var(--red-400);
  font-family: "Poppins-Italic", sans-serif;
  font-size: 0.75rem;
  margin-top: 0.25rem;
  min-height: 1.25rem;
}

.attribution {
  font-size: 0.6875rem;
  text-align: center;
}

@media (min-width: 61em) {
  main {
    width: 50%;
  }

  .divider {
    display: flex;
    align-items: center;
  }

  hr {
    flex-grow: 1;
    position: static;
  }

  .submit-button {
    flex-shrink: 0;
    position: static;
    transform: none;
  }
}