/* 解析台 —— 广播监看设备面板：浅灰机身、丝印式等宽标签、SMPTE 彩条作签名元素 */

:root {
  --plate:      #e4e7ec;   /* 机身面板 */
  --plate-deep: #d6dae1;   /* 面板凹槽 */
  --panel:      #fbfcfd;   /* 亮面模块 */
  --ink:        #141a21;
  --ink-soft:   #4c5665;
  --ink-faint:  #7d8795;
  --rule:       #c7cdd6;
  --rule-soft:  #dfe3e9;
  --rec:        #d81e05;   /* 录制红：唯一的动作色 */
  --rec-deep:   #a81704;

  --bars: #c8c800 0 14.28%, #00c8c8 0 28.57%, #00c800 0 42.85%,
          #c800c8 0 57.14%, #c80000 0 71.42%, #0000c8 0 85.71%, #1a1a1a 0 100%;

  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ui: "Archivo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;

  --gap: clamp(20px, 4vw, 36px);
  --radius: 4px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--plate);
  background-image:
    repeating-linear-gradient(180deg, rgba(255,255,255,.5) 0 1px, rgba(0,0,0,0) 1px 4px);
  color: var(--ink);
  font-family: var(--ui);
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/* ── SMPTE 彩条：全站唯一的强色，只出现在顶边与进度条 ───────────── */
.bars {
  background: linear-gradient(90deg, var(--bars));
}
.bars--top { height: 4px; flex: none; }
.bars--meter { position: absolute; inset: 0; }

/* ── 机头 ───────────────────────────────────────────────────────── */
.deck {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px var(--gap);
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, #eef0f4, #e0e4ea);
}
.deck__brand { display: flex; align-items: baseline; gap: 10px; }
.deck__name { font-size: 17px; font-weight: 700; letter-spacing: .08em; }
.deck__sub,
.deck__meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.deck__meta { white-space: nowrap; }

.rec {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #b3bac4;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.15);
  align-self: center;
  flex: none;
}
.rec[data-live="true"] { background: var(--rec); animation: blink 1.1s steps(1, end) infinite; }
@keyframes blink { 50% { opacity: .25; } }

/* ── 主体 ───────────────────────────────────────────────────────── */
.stage {
  flex: 1;
  width: min(880px, 100%);
  margin-inline: auto;
  padding: clamp(32px, 6vw, 64px) var(--gap) 56px;
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 5vw, 44px);
}

.intake__title {
  margin: 0 0 10px;
  font-size: clamp(28px, 5.2vw, 44px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -.015em;
}
.intake__lede {
  margin: 0 0 28px;
  max-width: 46ch;
  color: var(--ink-soft);
}

/* ── 输入槽 ─────────────────────────────────────────────────────── */
.feed__label,
.eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.feed__row {
  display: flex;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: inset 0 1px 0 #fff, 0 1px 2px rgba(20,26,33,.06);
  overflow: hidden;
}
.feed__row:focus-within { border-color: var(--ink-soft); box-shadow: 0 0 0 3px rgba(20,26,33,.12); }

.feed__input {
  flex: 1;
  min-width: 0;
  padding: 15px 16px;
  border: 0;
  background: transparent;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink);
}
.feed__input::placeholder { color: #a6aeba; }
.feed__input:focus { outline: none; }

.feed__go {
  flex: none;
  padding: 0 26px;
  border: 0;
  border-left: 1px solid var(--rule);
  background: var(--rec);
  color: #fff;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .18em;
  cursor: pointer;
  transition: background .15s ease;
}
.feed__go:hover:not(:disabled) { background: var(--rec-deep); }
.feed__go:disabled { background: #b3bac4; cursor: progress; }
.feed__go:focus-visible { outline: 3px solid var(--ink); outline-offset: -3px; }

.feed__hint { margin: 10px 0 0; font-size: 12.5px; color: var(--ink-faint); }

.alert {
  margin: 18px 0 0;
  padding: 11px 14px;
  border-left: 3px solid var(--rec);
  background: #fbeceb;
  font-size: 14px;
  color: #7d1a0b;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ── 解析结果 ───────────────────────────────────────────────────── */
.signal, .transfer { animation: rise .32s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

.slate {
  display: grid;
  grid-template-columns: 224px 1fr;
  gap: 20px;
  padding: 18px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--panel);
}
.slate__thumb[hidden] { display: none; }
.slate__thumb {
  aspect-ratio: 16 / 9;
  background: var(--plate-deep);
  border-radius: 2px;
  overflow: hidden;
}
.slate__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.slate__title {
  margin: 2px 0 12px;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 600;
  /* 抖音标题是整段文案，限高避免撑爆卡片 */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.specs { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; font-size: 13px; }
.specs dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 2px;
}
.specs dd { margin: 0; color: var(--ink-soft); }

/* ── 画质阶梯 ───────────────────────────────────────────────────── */
.ladder { margin-top: 22px; }
.ladder__head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.ladder__head .eyebrow { margin-bottom: 0; }
.ladder__note { font-size: 12px; color: var(--ink-faint); }

.ladder__list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}
.rung {
  display: grid;
  grid-template-columns: minmax(96px, max-content) 1fr auto auto;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-top: 1px solid var(--rule-soft);
}
.rung:first-child { border-top: 0; }
.rung:hover { background: #f4f6f9; }

.rung__label { font-family: var(--mono); font-size: 15px; font-weight: 600; letter-spacing: .02em; white-space: nowrap; }
.rung__detail { font-size: 13px; color: var(--ink-soft); }
.rung__size { font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); text-align: right; min-width: 62px; }

.rung__flag {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 6px;
  border: 1px solid var(--rec);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--rec);
  vertical-align: 2px;
}

.pull {
  padding: 8px 18px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.pull:hover:not(:disabled) { background: var(--ink); color: var(--panel); }
.pull:disabled { border-color: var(--rule); color: var(--ink-faint); cursor: not-allowed; }
.pull:focus-visible { outline: 3px solid var(--rec); outline-offset: 2px; }

/* ── 传输面板：进度条就是那条彩条 ───────────────────────────────── */
.transfer {
  padding: 18px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #f7f9fb, #eef1f5);
}
.transfer__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.transfer__head .eyebrow { margin-bottom: 0; }
.transfer__file {
  margin: 8px 0 14px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  word-break: break-all;
}

.ghost {
  border: 0;
  background: none;
  padding: 4px 2px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.ghost:hover { color: var(--rec); }

.meter {
  height: 26px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--plate-deep);
  box-shadow: inset 0 1px 3px rgba(20,26,33,.14);
  overflow: hidden;
}
.meter__fill {
  position: relative;
  height: 100%;
  width: 0%;
  overflow: hidden;
  transition: width .3s ease;
}
.meter__fill .bars--meter { width: 100%; }

.readout {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-faint);
  flex-wrap: wrap;
}
.readout__pct { font-size: 20px; font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.readout__cell { font-variant-numeric: tabular-nums; }

/* ── 页脚 ───────────────────────────────────────────────────────── */
.colophon {
  border-top: 1px solid var(--rule);
  padding: 18px var(--gap);
  background: #dde1e7;
}
.colophon p { margin: 0; max-width: 70ch; font-size: 12.5px; color: var(--ink-faint); }

/* ── 窄屏 ───────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .feed__row { flex-direction: column; }
  .feed__go { padding: 14px; border-left: 0; border-top: 1px solid var(--rule); }
  .slate { grid-template-columns: 1fr; }
  .slate__thumb { max-width: 320px; }
  .ladder__note { flex: 1 1 100%; }
  .rung {
    grid-template-columns: 1fr auto;
    grid-template-areas: "label size" "detail detail" "pull pull";
    gap: 6px 12px;
  }
  .rung__label { grid-area: label; }
  .rung__size { grid-area: size; }
  .rung__detail { grid-area: detail; }
  .pull { grid-area: pull; margin-top: 6px; justify-self: stretch; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* 没有封面时收起图位，标题占满整行 */
.slate:has(.slate__thumb[hidden]) { grid-template-columns: 1fr; }