/* ═══════════════════════════════════════════════════════════
   readvideo
   单列纸面 · 中文衬线标题 · 等宽时间码
   签名元素：字幕左竖栏的时间码，读下来像在扫一条时间轴
   ═══════════════════════════════════════════════════════════ */

:root {
  --ink: #16181c;
  --ink-soft: #3d4148;
  --muted: #767b82;
  --faint: #9aa0a7;
  --paper: #fdfdfc;
  --rule: #e7e8ea;
  --wash: #f3f4f5;
  --signal: #ce3f32;

  --display: "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
    "Liberation Mono", monospace;

  --col: 640px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  padding: 0 24px 96px;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.7 var(--body);
  -webkit-font-smoothing: antialiased;
}

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

/* ── 顶栏 ───────────────────────────────────────────────── */

.topbar {
  max-width: var(--col);
  margin: 0 auto;
  padding: 28px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.brand svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linejoin: round;
}

.brand svg path {
  fill: currentColor;
  stroke: none;
}

.brand em {
  font-style: normal;
  color: var(--muted);
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
}

.icon-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
}

.icon-button:hover {
  background: var(--wash);
  color: var(--ink);
}

/* ── 主体 ───────────────────────────────────────────────── */

main {
  max-width: var(--col);
  margin: 0 auto;
}

.lede {
  padding: 88px 0 40px;
}

.lede h1 {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: clamp(30px, 5vw, 40px);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.01em;
}

.lede p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* ── 输入 ───────────────────────────────────────────────── */

.url-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 6px 6px 18px;
  border: 1px solid var(--rule);
  border-radius: 14px;
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.url-row:focus-within {
  border-color: var(--ink-soft);
  box-shadow: 0 0 0 3px rgba(22, 24, 28, 0.05);
}

#video-url {
  flex: 1;
  min-width: 0;
  padding: 12px 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  outline: none;
}

#video-url::placeholder {
  color: var(--faint);
}

.go {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.go svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.go:hover {
  background: #000;
}

.go:active {
  transform: scale(0.96);
}

.go:disabled {
  background: var(--rule);
  color: var(--faint);
  cursor: default;
}


/* 主路径下方的一行快捷操作 */
.quick-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}

.quick-hint {
  color: var(--faint);
  font-size: 12px;
}

/* 入口下方的设置带：一行控件，不折叠 */
.options-band {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
/* ── 更多方式 ───────────────────────────────────────────── */

.more {
  margin-top: 14px;
}

.more > summary {
  display: inline-block;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.more > summary::-webkit-details-marker {
  display: none;
}

.more > summary::after {
  content: " ▾";
  font-size: 10px;
}

.more[open] > summary::after {
  content: " ▴";
}

.more > summary:hover {
  color: var(--ink);
}

.more-body {
  margin-top: 14px;
  padding: 16px 18px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--wash);
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 14px;
}

.inline-field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.inline-field select {
  padding: 5px 8px;
  border: 1px solid var(--rule);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}

.segmented {
  display: inline-flex;
  padding: 2px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: #fff;
}

.segmented label {
  cursor: pointer;
}

.segmented input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented span {
  display: block;
  padding: 4px 12px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
  transition: background 0.15s, color 0.15s;
}

.segmented input:checked + span {
  background: var(--ink);
  color: #fff;
}

.segmented input:focus-visible + span {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.alt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

/* ── 通用按钮 ───────────────────────────────────────────── */

.link-button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.link-button:hover:not(:disabled) {
  color: var(--ink);
  border-bottom-color: var(--rule);
}

.link-button:disabled {
  color: var(--faint);
  cursor: default;
}

.solid {
  padding: 9px 18px;
  border: 0;
  border-radius: 9px;
  background: var(--ink);
  color: #fff;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s;
}

.solid:hover {
  background: #000;
}

.ghost {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--rule);
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.ghost:hover {
  border-color: var(--ink-soft);
  background: var(--wash);
}

/* ── 采集面板（保留，但不再作为主路径）─────────────────── */

.capture-panel {
  margin-top: 32px;
  padding: 22px 0 0;
  border-top: 1px solid var(--rule);
}

.capture-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.capture-heading h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.engine-label {
  padding: 3px 10px;
  border-radius: 99px;
  background: var(--wash);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.capture-panel > p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
}

.capture-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0;
}

.inline-player iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: #000;
}

.inline-player p {
  margin: 8px 0 0;
  color: var(--faint);
  font-size: 12px;
}

.capture-options {
  margin-top: 14px;
  font-size: 13px;
}

.capture-options summary {
  color: var(--muted);
  cursor: pointer;
}

.capture-options label {
  display: block;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.capture-options select,
.capture-options input {
  margin-left: 6px;
  padding: 4px 8px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}

.capture-options p {
  margin: 10px 0 0;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.6;
}

.capture-status {
  margin-top: 12px;
  padding: 10px 14px;
  border-left: 2px solid var(--rule);
  color: var(--muted);
  font-size: 13px;
}

/* ── 进度 ───────────────────────────────────────────────── */

.progress-panel {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.pulse {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

.progress-body {
  flex: 1;
  min-width: 0;
}

#progress-text {
  display: block;
  color: var(--ink-soft);
  font-size: 13px;
}

#progress-meter {
  display: block;
  width: 100%;
  height: 2px;
  margin-top: 8px;
  border: 0;
  border-radius: 1px;
  background: var(--rule);
  appearance: none;
}

#progress-meter::-webkit-progress-bar {
  background: var(--rule);
  border-radius: 1px;
}

#progress-meter::-webkit-progress-value {
  background: var(--ink);
  border-radius: 1px;
  transition: width 0.3s;
}

#progress-meter::-moz-progress-bar {
  background: var(--ink);
  border-radius: 1px;
}

.elapsed {
  flex: 0 0 auto;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 12px;
}

/* ── 错误 ───────────────────────────────────────────────── */

.error {
  margin-top: 28px;
  padding: 14px 18px;
  border: 1px solid #f0d5d2;
  border-radius: 10px;
  background: #fdf6f5;
  color: #a3342a;
  font-size: 14px;
}

/* ── 结果 ───────────────────────────────────────────────── */

.reading {
  margin-top: 44px;
}

.source-card {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}

.source-card h2 {
  margin: 0 0 6px;
  font-family: var(--display);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.4;
}

.source-card p {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: -0.01em;
}

.reading-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}

.tabs {
  display: flex;
  gap: 20px;
}

.tab {
  padding: 0 0 6px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.tab:hover {
  color: var(--ink);
}

.tab.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.tab span {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 12px;
}

.reading-actions {
  display: flex;
  gap: 16px;
}

/* ── 文章 ───────────────────────────────────────────────── */

.article {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.article:empty {
  display: none;
}

.article h1,
.article h2,
.article h3 {
  margin: 1.8em 0 0.6em;
  font-family: var(--display);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.45;
}

.article h1 { font-size: 22px; }
.article h2 { font-size: 19px; }
.article h3 { font-size: 17px; }

.article p {
  margin: 0 0 1.1em;
}

.article ul,
.article ol {
  margin: 0 0 1.1em;
  padding-left: 1.3em;
}

.article li {
  margin-bottom: 0.4em;
}

.article blockquote {
  margin: 1.4em 0;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--rule);
  color: var(--muted);
}

.article code {
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--wash);
  font-family: var(--mono);
  font-size: 0.88em;
}

.article pre {
  margin: 1.4em 0;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--wash);
  overflow-x: auto;
}

.article pre code {
  padding: 0;
  background: none;
  font-size: 13px;
  line-height: 1.6;
}

.article strong {
  color: var(--ink);
  font-weight: 600;
}

.article a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
}

.notes-empty {
  padding: 26px 0;
  border-top: 1px solid var(--rule);
}

.notes-empty p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 14px;
}

/* ── 字幕：签名元素 ─────────────────────────────────────── */

.transcript-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  color: var(--faint);
  font-size: 12px;
}

#search {
  width: 160px;
  padding: 6px 10px;
  border: 1px solid var(--rule);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  outline: none;
}

#search:focus {
  border-color: var(--ink-soft);
}

.transcript {
  /* 左侧竖栏：时间码 + 一条贯穿的线 */
  border-left: 1px solid var(--rule);
}

.cue {
  position: relative;
  display: grid;
  grid-template-columns: 62px 1fr;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule);
}

.cue > span:first-child {
  position: relative;
  padding-left: 12px;
  padding-right: 10px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

/* 时间码左侧的小刻度，让竖栏像一条真正的时间轴 */
.cue > span:first-child::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0.55em;
  width: 5px;
  height: 1px;
  background: var(--faint);
}

.cue p {
  margin: 0;
  padding-right: 4px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.cue > a {
  color: inherit;
  text-decoration: none;
}

.cue > a:hover p {
  color: var(--ink);
}

.cue-empty {
  padding: 18px 0 18px 12px;
  color: var(--faint);
  font-size: 13px;
}

/* ── 尾部 ───────────────────────────────────────────────── */

.reading-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  color: var(--faint);
  font-size: 12px;
}

.empty {
  padding: 56px 0 0;
}

.empty p {
  margin: 0;
  color: var(--faint);
  font-size: 13px;
  line-height: 1.9;
}

.page-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 72px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  color: var(--faint);
  font-size: 12px;
}

/* ── 抽屉 / 对话框 ──────────────────────────────────────── */

dialog {
  width: min(520px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  padding: 26px 28px 30px;
  border: 1px solid var(--rule);
  border-radius: 16px;
  background: var(--paper);
  color: var(--ink);
  overflow-y: auto;
}

dialog::backdrop {
  background: rgba(22, 24, 28, 0.32);
}

.drawer-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.drawer-heading h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
}

.close {
  flex: 0 0 auto;
}

.drawer-description {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13px;
}

.field {
  display: block;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 13px;
}

.field input,
.field select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 12px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  outline: none;
}

.field input:focus,
.field select:focus {
  border-color: var(--ink-soft);
}

.field-note {
  margin: -8px 0 16px;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.65;
}

.field-note a {
  color: var(--ink-soft);
}

#advanced summary,
.capture-options summary,
.collector-steps details summary {
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}

#advanced[open] summary {
  margin-bottom: 14px;
}

.connection-result {
  margin: 12px 0;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--wash);
  font-size: 13px;
}

.connection-result.failed {
  background: #fdf6f5;
  color: #a3342a;
}

.drawer-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

.privacy-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  color: var(--faint);
  font-size: 12px;
  line-height: 1.7;
}

.privacy-note p {
  margin: 0;
}

.privacy-note strong {
  color: var(--muted);
  font-weight: 600;
}

.collector-steps {
  margin: 0 0 18px;
  padding-left: 20px;
  color: var(--muted);
  font-size: 13px;
}

.collector-steps li {
  margin-bottom: 18px;
}

.collector-steps strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
  font-weight: 600;
}

.collector-steps p {
  margin: 0 0 10px;
  line-height: 1.65;
}

.collector-steps textarea {
  width: 100%;
  height: 120px;
  margin-top: 8px;
  padding: 10px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--wash);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 11px;
  resize: vertical;
}

/* ── Toast ──────────────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  padding: 11px 20px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  box-shadow: 0 8px 28px rgba(22, 24, 28, 0.18);
  z-index: 60;
}

/* ── 无障碍 ─────────────────────────────────────────────── */

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ── 移动端 ─────────────────────────────────────────────── */

@media (max-width: 560px) {
  body {
    padding: 0 18px 72px;
    font-size: 15px;
  }

  .lede {
    padding: 56px 0 30px;
  }

  .url-row {
    padding-left: 14px;
  }

  .reading-toolbar {
    flex-wrap: wrap;
  }

  .cue {
    grid-template-columns: 52px 1fr;
  }

  .cue > span:first-child {
    padding-left: 8px;
    font-size: 11px;
  }

  #search {
    width: 100%;
  }

  .transcript-header {
    flex-wrap: wrap;
  }

  .page-footer {
    flex-direction: column;
    gap: 6px;
  }
}