:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --ink: #111111;
  --muted: #444444;
  --line: #bbbbbb;
  --focus: #005fcc;
  --button-bg: #111111;
  --button-ink: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--bg);
  font-size: 1.125rem;
  line-height: 1.6;
}

a {
  color: var(--ink);
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.16em;
}

a:focus-visible,
button:focus-visible,
audio:focus-visible {
  outline: 4px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  padding: 0.75rem 1rem;
  background: var(--button-bg);
  color: var(--button-ink);
  z-index: 10;
}

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

.site-header,
main,
footer {
  width: min(100%, 52rem);
  margin: 0 auto;
  padding: 1.25rem;
}

.site-header {
  border-bottom: 2px solid var(--line);
}

.site-kicker {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-weight: 700;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.1;
}

h2 {
  margin-top: 2rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.2;
}

h3 {
  font-size: 1.25rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

button {
  min-height: 3rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--button-bg);
  border-radius: 0;
  color: var(--button-ink);
  background: var(--button-bg);
  font: inherit;
  font-weight: 700;
}

button:disabled {
  opacity: 0.45;
}

audio {
  display: block;
  width: 100%;
  margin-top: 1rem;
}

.intro,
.control-panel,
.now-playing,
.location-list > li {
  border-bottom: 2px solid var(--line);
  padding-bottom: 1.25rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.location-list {
  padding-left: 1.5rem;
}

.location-list > li {
  margin: 0 0 1.25rem;
}

.location-list h3 {
  margin-bottom: 0.35rem;
}

.location-list p {
  margin: 0.35rem 0;
}

.location-list button {
  margin-top: 0.5rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.audio-debug-panel {
  border-bottom: 2px solid var(--line);
  padding-bottom: 1.25rem;
}

.audio-debug-panel ol {
  padding-left: 1.5rem;
}

.audio-debug-panel li {
  margin-bottom: 0.5rem;
  font-family: Consolas, "Courier New", monospace;
  font-size: 1rem;
  line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --ink: #ffffff;
    --muted: #dddddd;
    --line: #777777;
    --focus: #8ab4ff;
    --button-bg: #ffffff;
    --button-ink: #000000;
  }
}