/* 台語即時字幕:手機優先、深色、字大。零外連,字型走系統堆疊。 */

:root {
  --ink: #0b1016;
  --ink-2: #131b25;
  --line: #24313f;
  --fg: #eef4fb;
  --fg-dim: #93a4b8;
  --go: #2ec4a6;
  --go-ink: #04120e;
  --stop: #ff6b6b;
  --warn: #ffc857;
  --cap: 1;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--ink);
  color: var(--fg);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--line);
}

.bar h1 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: .02em;
}

.pill {
  margin: 0;
  padding: .2rem .6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .78rem;
  color: var(--fg-dim);
  white-space: nowrap;
}

.pill[data-tone="ok"] { color: var(--go); border-color: #1d5c50; }
.pill[data-tone="bad"] { color: var(--stop); border-color: #6b2b2b; }

.notice {
  margin: 0;
  padding: .8rem 1rem;
  background: #3a2a08;
  border-bottom: 1px solid #6b5316;
  color: var(--warn);
  font-size: .95rem;
}

/* 字幕區 */
.stage {
  flex: 1 1 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1rem 1rem 2rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.hint {
  margin: auto 0;
  color: var(--fg-dim);
  font-size: clamp(1rem, 4vw, 1.25rem);
  text-align: center;
}

/* 每一句。字級至少 28px 起跳,--cap 由設定的字級滑桿縮放。 */
.line {
  margin: 0;
  font-size: calc(clamp(28px, 7.2vw, 46px) * var(--cap));
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .01em;
  color: var(--fg);
  opacity: .42;
  transition: opacity .25s ease;
  word-break: break-word;
}

/* 字少的時候把字幕壓在畫面下緣(靠近拇指與視線),多到滿了 auto 自動變 0,捲動照常 */
.stage > .line:first-child { margin-top: auto; }

/* 最新一句最亮,舊句淡出但仍讀得到 */
.line:last-child { opacity: 1; }
.line:nth-last-child(2) { opacity: .72; }
.line:nth-last-child(3) { opacity: .55; }

.line.pending {
  color: var(--fg-dim);
  font-weight: 500;
}

.line.demo::after {
  content: "示範";
  margin-inline-start: .5em;
  padding: .1em .4em;
  border: 1px solid var(--warn);
  border-radius: .35em;
  color: var(--warn);
  font-size: .38em;
  font-weight: 500;
  vertical-align: middle;
  white-space: nowrap;
}

.line.bad { color: var(--stop); font-size: calc(clamp(18px, 4.4vw, 24px) * var(--cap)); font-weight: 500; }

/* 底部操作區 */
.dock {
  flex: 0 0 auto;
  padding: .8rem 1rem 1rem;
  border-top: 1px solid var(--line);
  background: var(--ink-2);
}

.status {
  margin: 0 0 .5rem;
  font-size: .92rem;
  color: var(--fg-dim);
}

.status[data-tone="live"] { color: var(--go); }
.status[data-tone="work"] { color: var(--warn); }
.status[data-tone="bad"] { color: var(--stop); }

.level {
  height: 6px;
  margin-bottom: .8rem;
  border-radius: 999px;
  background: #1d2836;
  overflow: hidden;
}

.level-bar {
  width: 0;
  height: 100%;
  background: var(--go);
  transition: width .08s linear;
}

.go {
  display: block;
  width: 100%;
  min-height: 64px;
  border: 0;
  border-radius: 16px;
  background: var(--go);
  color: var(--go-ink);
  font: inherit;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: .1em;
  cursor: pointer;
}

.go:active { transform: scale(.99); }
.go[data-on="1"] { background: var(--stop); color: #1b0606; }
.go:disabled { background: #2c3a4a; color: var(--fg-dim); cursor: not-allowed; }

#settings {
  margin-top: .9rem;
  font-size: .9rem;
  color: var(--fg-dim);
}

#settings summary {
  cursor: pointer;
  padding: .3rem 0;
  min-height: 32px;
}

.fields {
  display: grid;
  gap: .35rem;
  padding: .5rem 0 .2rem;
}

.fields label { color: var(--fg); }
.fields .row { display: flex; align-items: center; gap: .5rem; color: var(--fg-dim); }
.fields .row input { width: 20px; height: 20px; }

.fields input[type="url"] {
  padding: .6rem .7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--ink);
  color: var(--fg);
  font: inherit;
  font-size: 1rem;
}

.fields input[type="range"] { width: 100%; accent-color: var(--go); }

.fine { margin: 0 0 .5rem; font-size: .8rem; color: var(--fg-dim); }

.foot {
  flex: 0 0 auto;
  padding: .8rem 1rem 1.2rem;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  color: var(--fg-dim);
}

.foot p { margin: 0 0 .35rem; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .go:active { transform: none; }
}