archtika/web-app/src/app.css

:root {
  --bg-primary: white;
  --bg-secondary: hsl(0 0% 95%);
  --bg-tertiary: hsl(0 0% 90%);

  --color-text: black;
  --color-text-invert: white;
  --color-accent: hsl(210, 100%, 30%);
  --color-success: hsl(105, 100%, 30%);
  --color-error: hsl(0, 100%, 30%);

  --border-primary: 0.0625rem solid var(--bg-tertiary);
  --border-radius: 0.125rem;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: hsl(0 0% 15%);
    --bg-secondary: hsl(0 0% 20%);
    --bg-tertiary: hsl(0 0% 25%);

    --color-text: white;
    --color-text-invert: black;
    --color-accent: hsl(210, 100%, 80%);
    --color-success: hsl(105, 100%, 80%);
    --color-error: hsl(0, 100%, 80%);

    color-scheme: dark;
  }
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  line-height: 1.5;
  font-family: system-ui, sans-serif;
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  min-block-size: 100vh;
}

section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

section + section {
  margin-block-start: 2rem;
}

button,
label,
select,
summary,
[role="button"],
[role="option"] {
  cursor: pointer;
}

input,
button,
textarea,
select,
a[role="button"] {
  font: inherit;
  color: inherit;
  border: var(--border-primary);
  border-radius: var(--border-radius);
  padding-inline: 0.5rem;
  padding-block: 0.25rem;
}

input,
textarea,
select {
  background-color: var(--bg-primary);
}

a {
  color: var(--color-accent);
}

a[role="button"] {
  display: inline-block;
  max-inline-size: fit-content;
  text-decoration: none;
}

button,
a[role="button"] {
  background-color: var(--bg-secondary);
}

:is(button, a[role="button"]):hover {
  background-color: var(--bg-tertiary);
}

img,
picture,
svg,
video {
  max-inline-size: 100%;
  block-size: auto;
}

ul,
ol {
  list-style: none;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  text-wrap: balance;
}

form[method="POST"] {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

form > button[type="submit"] {
  max-inline-size: 30ch;
}

form[method="GET"] {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20ch), 1fr));
  align-items: start;
}

form[method="GET"] > button[type="submit"] {
  align-self: end;
}

form > label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-inline-size: 30ch;
}

form > label:has(textarea) {
  max-inline-size: 65ch;
}