:root {
  color-scheme: light;
  --ink: #1c1915;
  --muted: #4e4942;
  --paper: #f4f0e8;
  --card: #fffdf8;
  --line: #d9d1c3;
  --teal: #14343f;
  --teal-soft: #e5eef0;
  --live: #9d1c1c;
  --error: #8d1c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, #efe7d8 0, transparent 16rem),
    var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", "PingFang TC", "Helvetica Neue", sans-serif;
  line-height: 1.45;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: 0.75rem;
  transform: translateY(-150%);
  background: white;
  color: var(--ink);
  padding: 0.5rem 0.75rem;
  z-index: 2;
}

.skip-link:focus { transform: none; }

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
}

.mast,
main,
footer {
  width: min(42rem, calc(100% - 2rem));
  margin-inline: auto;
}

.mast { padding-top: 2.5rem; }

.kicker {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--muted);
}

h1 {
  margin: 0.2rem 0 0.4rem;
  font-family: "Iowan Old Style", Palatino, "Songti TC", serif;
  font-size: 2.6rem;
  font-weight: 600;
  line-height: 1.05;
}

.lede { margin: 0; max-width: 36rem; color: var(--muted); }

main { padding: 1.5rem 0 2rem; }

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  font-weight: 650;
  margin-bottom: 0.6rem;
}

.channels {
  display: grid;
  gap: 0.6rem;
}

.channel {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 3.25rem;
  padding: 0.75rem 0.9rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
}

.channel:has(input:checked) {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.channel input { accent-color: var(--teal); width: 1.15rem; height: 1.15rem; }

.name { display: block; font-size: 1.15rem; font-weight: 650; }

.meta { display: block; color: var(--muted); font-size: 0.9rem; }

.custom { margin-top: 1.25rem; }

.custom p { margin: 0 0 0.45rem; color: var(--muted); }

label { font-weight: 650; }

.custom input[type="url"] {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--card);
  color: var(--ink);
  font: 0.95rem/1.4 ui-monospace, "SF Mono", Menlo, monospace;
}

.transport {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

button {
  min-height: 2.75rem;
  padding: 0.55rem 1.15rem;
  border: 0;
  border-radius: 999px;
  background: var(--teal);
  color: #f7f4ef;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

#stop { background: transparent; color: var(--teal); border: 1px solid var(--teal); }

.volume { margin-left: 0.4rem; }

input[type="range"] { accent-color: var(--teal); width: 8rem; }

.now,
.spec,
.session {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

#spec-note { margin: 0 0 0.6rem; color: var(--muted); }

.spec-list { margin: 0; }

.spec-list div {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
}

.spec-list dt,
.spec-list dd { margin: 0; }

.spec-list dt { color: var(--muted); font-weight: 650; }

h2, h3 { font-family: "Iowan Old Style", Palatino, "Songti TC", serif; font-weight: 600; }

h2 { margin: 0 0 0.5rem; font-size: 1.4rem; }

h3 { margin: 1rem 0 0.4rem; font-size: 1.1rem; }

.state { display: flex; align-items: center; gap: 0.5rem; margin: 0; font-size: 1.05rem; }

.dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--live);
}

@media (prefers-reduced-motion: no-preference) {
  .dot:not([hidden]) { animation: pulse 1.6s ease-in-out infinite; }
}

@keyframes pulse {
  50% { opacity: 0.45; }
}

.error { min-height: 1.4rem; margin: 0.4rem 0; color: var(--error); font-weight: 650; }

audio { width: 100%; margin-top: 0.4rem; }

.url,
.playlist,
.log {
  overflow: auto;
  padding: 0.75rem;
  background: #231f1b;
  color: #f3ecdf;
  border-radius: 0.6rem;
  font: 0.82rem/1.45 ui-monospace, "SF Mono", Menlo, monospace;
}

.url { white-space: pre-wrap; word-break: break-all; }

.playlist,
.log { max-height: 14rem; white-space: pre-wrap; word-break: break-all; }

footer { padding-bottom: 2.5rem; color: var(--muted); }

.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;
}