*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

*:focus-visible {
  outline: 0.2em solid color-mix(in oklab, var(--primary), black 20%);
  outline-offset: 0.1em;
}

input, button {
  color: inherit;
  font: inherit;
}

body {
  font-size: clamp(1rem, 0.91rem + 0.43vw, 1.25rem);
  font-family: "Arial", system-ui;

  --primary: #12b7ed;
  --secondary: #fbeb2a;
  --bubble: #d83543;
  --text-on-bubble: #fff;
}

main {
  inline-size: min(92vw, 60rem);
  margin-inline: auto;
  padding-block: 1.6rem;
}

main > * + * {
  margin-block-start: 2.8rem;
}

h1 {
  font-weight: 800;
  color: var(--primary);
  -webkit-text-stroke: 0.3rem #000;
  paint-order: stroke fill;
  font-size: clamp(2.4rem, 2.1rem + 1.39vw, 3.2rem);
}

h1 span {
  font-weight: 900;
  color: var(--secondary);
}

main > div {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

main > div > * {
  flex: 1 1 auto;
}

fieldset {
  display: grid;
  justify-content: start;
  align-content: start;
  gap: 1.2rem;
  border: none;
}

label {
  display: grid;
  gap: 0.28rem;
}

input {
  padding-inline: 0.48rem;
  padding-block: 0.4rem;
  border: 0.1rem solid #999;
  background-color: #fefefe;
  border-radius: 0;
}

canvas {
  inline-size: 20rem;
  min-inline-size: 0;
  block-size: fit-content;

  @media (width < 40rem) {
    order: -1;
  }  
}

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

button {
  border: none;
  padding-block: 1.4rem;
  padding-inline: 2rem;
  font-size: 1.125em;
  background-color: color-mix(in oklab, var(--bubble), black 10%);
  color: var(--text-on-bubble);
  cursor: pointer;
  border-radius: 50%;
  transition: border-radius 0.3s, background-color 0.3s;
}

button:hover {
  border-radius: 25%;
  background-color: color-mix(in oklab, var(--bubble), black 20%);
}

a {
  text-underline-offset: 0.2em;
}