:root {
  --bg: #120f19;
  --text: #fff;
  --muted: #947b82;
  --border: #947b82b3;
  --hover-bg: #dcb8b0;
  --hover-text: #000;
  --selection: #9bb0cd;
  --topography: url("https://phthallo.com/topography.svg");
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbf0c9;
    --text: #242029;
    --muted: #b47522;
    --border: #b47522;
    --hover-bg: #d5c4a3;
    --hover-text: #242029;
    --selection: #d5c4a3;
    --topography: url("https://phthallo.com/topographylight.svg");
    color-scheme: light;
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--selection);
  color: #000;
}

body {
  margin: 0;
  background: var(--bg) var(--topography);
  color: var(--text);
  font-family: monospace;
  line-height: 1.5;
}

main {
  min-height: 100dvh;
  margin: auto;
  padding: 1rem;
}

@media (min-width: 768px) {
  main {
    padding: 2rem;
  }
}

@media (min-width: 1024px) {
  main {
    width: 50%;
  }
}

h1 {
  font-size: 2.5em;
  font-weight: normal;
  margin: 0;
  padding: 0.5rem 0;
}

p {
  margin: 0 0 1rem;
}

a {
  color: inherit;
}

a:hover,
button:hover {
  background: var(--hover-bg);
  color: var(--hover-text);
}

.muted {
  color: var(--muted);
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 24rem;
  margin-bottom: 1rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

input,
button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.4rem 0.6rem;
}

button {
  cursor: pointer;
  align-self: flex-start;
}

button:disabled {
  cursor: wait;
  opacity: 0.6;
}