:root {
  color-scheme: dark;
  --bg: oklch(0.17 0.008 255);
  --bg-raised: oklch(0.21 0.01 255);
  --line: oklch(0.30 0.012 255);
  --text: oklch(0.93 0.01 85);
  --muted: oklch(0.72 0.012 255);
  --dim: oklch(0.62 0.012 255);
  --word: oklch(0.84 0.15 88);
  --opt: oklch(0.80 0.11 205);
  --ok: oklch(0.78 0.14 150);
  --warn: oklch(0.80 0.15 75);
  --bad: oklch(0.70 0.18 25);
  --font: "Segoe UI", "Microsoft JhengHei", "Noto Sans TC", "PingFang TC", system-ui, sans-serif;
  --mono: Consolas, "Cascadia Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
::selection { background: oklch(0.45 0.09 88); color: var(--text); }
:focus-visible { outline: 2px solid var(--word); outline-offset: 2px; }

.bar {
  flex: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
h1 { margin: 0; font-size: 1.05rem; font-weight: 650; letter-spacing: 0.02em; }
.controls { display: flex; flex-wrap: wrap; gap: 0.5rem 0.75rem; align-items: end; flex: 1 1 auto; }
.field { display: flex; flex-direction: column; gap: 0.15rem; font-size: 0.75rem; color: var(--muted); }
select, button {
  font: inherit; font-size: 0.9rem; color: var(--text);
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: 6px;
  padding: 0.45rem 0.7rem; min-height: 2.25rem; cursor: pointer;
}
select:hover, button:hover { border-color: var(--dim); }
select:disabled { opacity: 0.5; cursor: not-allowed; }
#go { background: var(--word); color: oklch(0.2 0.02 88); border-color: var(--word); font-weight: 650; min-width: 5rem; }
#go:hover { filter: brightness(1.08); }
#go.on { background: transparent; color: var(--bad); border-color: var(--bad); }
.ghost { background: transparent; color: var(--muted); }

.status { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: var(--muted); margin-left: auto; min-width: 9rem; }
.dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: var(--dim); flex: none; }
.dot.load { background: var(--warn); animation: pulse 1.2s ease-in-out infinite; }
.dot.listen { background: var(--ok); }
.dot.busy { background: var(--word); animation: pulse 0.7s ease-in-out infinite; }
.dot.err { background: var(--bad); }
@keyframes pulse { 50% { opacity: 0.35; } }
.meter { width: 6rem; height: 4px; background: var(--line); border-radius: 2px; overflow: hidden; }
.meter b { display: block; height: 100%; width: 100%; background: var(--warn); transform: scaleX(0); transform-origin: left; transition: transform 0.2s; }

main {
  flex: 1 1 auto; overflow-y: auto; scroll-behavior: smooth;
  padding: 1.5rem 1rem 40vh;
  scrollbar-color: var(--line) transparent; scrollbar-width: thin;
}
main::-webkit-scrollbar { width: 10px; }
main::-webkit-scrollbar-thumb { background: var(--line); border-radius: 5px; }
main > * { max-width: 52rem; margin-inline: auto; }

.intro { color: var(--muted); font-size: 0.95rem; }
.intro h2 { color: var(--text); font-size: 1.35rem; font-weight: 650; margin: 0 0 0.75rem; text-wrap: balance; }
.intro p, .intro li { max-width: 68ch; }
.intro li { margin-bottom: 0.5rem; }
.intro strong { color: var(--text); }
.intro .note { color: var(--dim); font-size: 0.85rem; }

.cap { margin: 0 0 1.4rem; animation: rise 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
.cap.opt {
  display: grid; grid-template-columns: auto 1fr; gap: 0 1rem; align-items: start;
  margin: 0 0 0.75rem; padding: 0.9rem 1rem;
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: 10px;
}
.cap:not(.opt) + .cap.opt { margin-top: 1.6rem; }
.cap.opt + .cap:not(.opt) { margin-top: 2rem; }
.cap.opt .l {
  display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: 8px;
  background: var(--opt); color: var(--bg); font-size: 1.4rem; font-weight: 800; line-height: 1;
}
.cap.opt .zh { color: var(--text); opacity: 0.8; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
.en { margin: 0; font-size: clamp(1.4rem, 1rem + 1.8vw, 2rem); line-height: 1.4; font-weight: 500; text-wrap: pretty; }
.zh { margin: 0.25rem 0 0; color: var(--dim); font-size: clamp(1rem, 0.9rem + 0.5vw, 1.2rem); line-height: 1.55; }
.words { list-style: none; margin: 0.5rem 0 0; padding: 0 0 0 1.2rem; display: grid; gap: 0.15rem; font-size: 0.95rem; color: var(--muted); }
.words b { color: var(--word); font-weight: 650; margin-right: 0.4rem; }
.words .ph { font-family: var(--mono); font-size: 0.85em; color: var(--dim); margin-right: 0.4rem; }

#latest {
  position: fixed; right: 1rem; bottom: 1rem; box-shadow: 0 4px 16px oklch(0 0 0 / 0.4);
  background: var(--bg-raised); border-color: var(--dim);
}
[hidden] { display: none !important; }

@media (max-width: 640px) {
  .bar { gap: 0.5rem; padding: 0.6rem 1rem; }
  .controls { width: 100%; }
  .field { flex: 1 1 8rem; }
  .field select { width: 100%; }
  .status { margin-left: 0; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; transition: none !important; }
}
.cap.opt .words { padding-left: 0; }