:root {
  color-scheme: light dark;
  --background: #ffffff;
  --text: #17211c;
  --muted: #56615b;
  --link: #176044;
  --border: #d3dbd6;
  --note: #f3f6f4;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  background: var(--background);
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #151b17;
    --text: #e8eee9;
    --muted: #b1bfb5;
    --link: #a1dfb9;
    --border: #3c4840;
    --note: #202a23;
  }
}

* { box-sizing: border-box; }

body {
  max-width: 70ch;
  margin: 0 auto;
  padding: 0 1rem;
  overflow-wrap: break-word;
}

a {
  color: var(--link);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 0.08em;
}

a:hover { text-decoration-thickness: 0.15em; }

:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: -10000px;
  padding: 0.5rem 0.75rem;
  background: var(--background);
}

.skip-link:focus { left: 1rem; }

.site-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
}

.site-name {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  column-gap: 1.25rem;
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
}

nav a {
  display: inline-block;
  padding: 0.5rem 0;
}

main { padding: 2.5rem 0 3rem; }

h1, h2 { line-height: 1.3; }
h1 { margin: 0 0 1rem; font-size: 2rem; }
h2 { margin: 2rem 0 0.75rem; font-size: 1.25rem; }
p { margin: 0 0 1.25rem; }

.app-logo {
  display: block;
  max-width: 100%;
  margin-bottom: 1.5rem;
}

.abbreviation { white-space: nowrap; }
.last-updated { color: var(--muted); }

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.75rem 0 1.25rem;
}

.store-badge {
  display: block;
  min-width: 10.5rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  color: var(--text);
  text-decoration: none;
}

.store-badge:hover { border-color: var(--link); }
.store-caption { display: block; font-size: 0.75rem; }
.store-name { display: block; font-size: 1.125rem; font-weight: 600; }

.todo,
.callout {
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--link);
  background: var(--note);
}

h3 { margin: 1.75rem 0 0.5rem; font-size: 1.0625rem; line-height: 1.35; }

main ul, main ol { margin: 0 0 1.25rem; padding-left: 1.5rem; }
main li { margin-bottom: 0.5rem; }

.site-footer {
  padding: 1.25rem 0 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.site-footer p { margin: 0; }