:root {
  --paper: #f7f1e8;
  --ink: #2b2018;
  --muted: #7d6a5c;
  --accent: #7a4a2a;
  --line: #e4d8c8;
  --error: #9c2f1f;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1d1813;
    --ink: #eee3d6;
    --muted: #a8968a;
    --accent: #d39b6a;
    --line: #3a3027;
    --error: #e58a78;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.65 Georgia, "Iowan Old Style", "Times New Roman", serif;
}

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

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.25rem 1rem;
}

.brand {
  display: inline-flex;
  gap: .5rem;
  align-items: center;
  color: var(--ink);
  font-weight: bold;
  text-decoration: none;
}

.signin { font-size: .95rem; }

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

.page.narrow { max-width: 24rem; }

h1 { font-size: 2rem; line-height: 1.2; margin: 1.5rem 0 .75rem; }
h2 { font-size: 1.3rem; line-height: 1.3; margin: 0 0 .25rem; }

.intro p { color: var(--muted); font-size: 1.1rem; }

.note, .members {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 .5rem;
}

.meta {
  margin: 0 0 .75rem;
  color: var(--muted);
  font-size: .85rem;
  font-style: italic;
}

.button, button {
  display: inline-block;
  padding: .6rem 1.2rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--paper);
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}

button:disabled { opacity: .6; cursor: progress; }

form { display: grid; gap: .4rem; margin-top: 1rem; }

label { font-size: .9rem; color: var(--muted); margin-top: .5rem; }

input {
  padding: .6rem .7rem;
  border: 1px solid var(--line);
  border-radius: .4rem;
  background: transparent;
  color: var(--ink);
  font: inherit;
}

input[aria-invalid="true"] { border-color: var(--error); }

form button { margin-top: 1rem; }

.notice { margin: .5rem 0 0; color: var(--error); font-size: .95rem; }

.aside { color: var(--muted); font-size: .9rem; margin-top: 1.5rem; }

.foot {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 2rem;
  color: var(--muted);
  font-size: .85rem;
}