Soc/app/assets/stylesheets/main.css

:root {
  --border-color: #282828;
  --highlight-color: #d65d0e;
  --background-color: #928374;
  --dark-background-color: #1d2021;
  --inset-background-color: #fbf1c7;
  --alert-border-color: #98971a;
  --form-error-color: #cc241d;
}

* {
  box-sizing: border-box;
}

body {
  font-size: 1.2em;
  font-family: sans-serif;
  background-color: var(--background-color);
}

strong {
  font-weight: bold;
}

em {
  font-style: italic;
}

ol {
  list-style-type: decimal;
}

ul {
  list-style-type: disc;
}

h1, h2, h3, h4, h5, h6, h7 {
  font-weight: bold;
  padding: .5em 0;
}

h3, h4, h5, h6, h7 {
  text-decoration: underline;
}

h1 {
  font-size: 4em;
  text-align: center;
  color: var(--highlight-color);
  -webkit-text-stroke: 1px var(--background-color);
}

h2 {
  font-size: 2.5em;
}

header {
  background-color: var(--dark-background-color);
}

nav {
  padding: 1em;
  > ul {
    text-align: center;
    > li {
      display: inline;
      padding: 0 2em;
      > a:link, > a:visited {
        text-decoration: none;
        font-size: 1.3em;
        font-weight: bold;
      }
      > a:hover {
        text-decoration: underline;
      }
    }
  }
}

main {
  max-width: 60em;
  margin: 0 auto;
}

p {
  margin: .5em 0;
}

a:link, a:visited {
  color: var(--highlight-color);
}

a:hover {
  text-decoration: none;
}

a:link:has(h1), a:visited:has(h1) {
  text-decoration: none;
}

section.content, aside {
  margin: 1em auto;
  padding: .5em;
  background-color: var(--inset-background-color);
  border: 1px solid var(--border-color);
}

aside {
  float: left;
}

dl {
  line-height: 1.3em;
}

dt {
  font-weight: bold;
}

dd {
  margin-left: 2em;
}

main {
  padding: 1em;
}

form {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: .5em;
  align-items: center;

  max-width: 35em;
  margin: 0 auto;
  border: 1px solid var(--border-color);
  border-radius: .5em;
  font-size: 1.2em;
  background-color: var(--inset-background-color);
  box-shadow: .5em .5em 3em var(--dark-background-color);

  > label {
    grid-column: 1;
    text-align: right;
    margin: 0 .1em 1em .5em;
  }

  > input {
    font-size: 1em;
    grid-column: 2;
    padding: .25em;
    margin: 0 .5em 1em .1em;
  }

  > input[type=submit] {
    grid-column: 1/3;
    margin: 0 .5em 1em .5em;
    background-color: var(--highlight-color);
    border: 1px solid var(--border-color);
    border-radius: .25em;
  }

  > input[type=text]:focus, > input[type=password]:focus, > textarea:focus {
    box-shadow: 0 0 10px var(--highlight-color);
  }

  > h2 {
    text-align: center;
    font-size: 1.5em;
    background-color: var(--highlight-color);
    grid-column: 1/3;
    border-radius: .2em .2em 0 0;
  }

  > label.field_with_errors {
    color: var(--form-error-color);
  }
  > input.field_with_errors {
    border-color: var(--form-error-color);
  }
}

div.flash {
  border: 3px solid;
  border-radius: .25em;
  margin: 0 auto 1em auto;
  max-width: 35em;
  padding: .5em;
  background-color: var(--dark-background-color);
  color: var(--background-color);
}
div.notice {
  border-color: var(--highlight-color);
}
div.alert {
  border-color: var(--alert-border-color);
}