/* 阅读器 mock：复刻 web/src 里阅读页的真实控件（数值取自 articleBody.css、articleAudioPlayerBar.css、
   sentenceTranslationStrip.css、dictionaryPanel.css、chapterRecitation.css），颜色全部走 designTokens.css。
   mock 是固定尺寸画布（默认 600×460，--mock-w / --mock-h 可改），reader-mock.js 按外框宽度整体 scale。
   演示动画只住在这里：data-step 0..3 切换结果态，每个节点内部的「动作」用带延迟的 keyframes 表现。
   storyboard 见 README.md「配图动画」一节。 */

.mock-frame {
  position: relative; width: 100%;
  aspect-ratio: var(--mock-aspect, 600 / 460);
  overflow: hidden; border: 1px solid var(--line-hairline); border-radius: var(--radius-hero-card);
  background: var(--surface-panel); box-shadow: var(--shadow-hero);
  transform: translateZ(0); /* 圆角裁切在 Safari 上依赖它，勿删 */
}
.reader-mock {
  position: absolute; left: 0; top: 0;
  width: var(--mock-w, 600px); height: var(--mock-h, 460px);
  display: grid; grid-template-rows: 48px minmax(0, 1fr) 62px;
  transform: scale(var(--mock-scale, 1)); transform-origin: 0 0;
  font-family: var(--font-ui); font-size: 15px; line-height: 1.5; color: var(--ink); background: var(--surface-panel); text-align: left;
  -webkit-user-select: none; user-select: none;
}
.reader-mock * { box-sizing: border-box; }
.reader-mock .icon { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.reader-mock .icon--filled { fill: currentColor; stroke: none; }

/* ---------- 最上面一行：Read | Recite ---------- */
.rm-top { display: flex; align-items: center; justify-content: space-between; padding: 0 20px; border-bottom: 1px solid var(--line-hairline); }
.rm-views { display: inline-flex; padding: 2px; border-radius: var(--radius-control); background: var(--surface-sunken); }
.rm-views span {
  border-radius: 4px; padding: 4px 10px; font-size: 13px; color: var(--ink-secondary); min-height: 28px; line-height: 20px;
  transition: background-color 200ms ease, color 200ms ease, box-shadow 200ms ease;
}
.rm-views [data-view='read'], .reader-mock[data-step='3'] .rm-views [data-view='recite'] { background: var(--surface-panel); color: var(--ink); box-shadow: var(--shadow-control); }
.reader-mock[data-step='3'] .rm-views [data-view='read'] { background: none; color: var(--ink-secondary); box-shadow: none; }
.rm-chapter { font-size: 12px; color: var(--ink-secondary); }

/* ---------- 正文 + 词典面板 ---------- */
.rm-stage { position: relative; min-height: 0; }
.rm-read {
  position: absolute; inset: 0; display: grid; grid-template-columns: minmax(0, 1fr) 0px;
  transition: grid-template-columns 320ms cubic-bezier(0.16, 1, 0.3, 1), opacity 260ms ease;
}
.rm-column { padding: 22px 28px 0; overflow: hidden; }
.rm-column h1 { margin: 0 0 14px; font-family: var(--font-display); font-size: 27px; font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
.rm-column p { margin: 0 0 0.7em; font-family: var(--font-reading); font-size: 19px; line-height: 1.75; text-wrap: pretty; }
.rm-column .sentence { border-radius: 3px; box-decoration-break: clone; -webkit-box-decoration-break: clone; transition: background-color 150ms ease; }
.rm-column .word { position: relative; border-radius: 3px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.rm-column .word--saved { text-decoration: underline dotted var(--saved-word-underline); text-decoration-thickness: 1.5px; text-underline-offset: 0.3em; }

.rm-dictionary {
  min-width: 0; overflow: hidden; border-left: 1px solid var(--line-hairline); background: var(--surface-panel);
  display: flex; flex-direction: column; gap: 10px; padding: 20px 16px 0; white-space: nowrap;
  opacity: 0; transition: opacity 200ms ease;
}
.rm-dict-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 6px; }
.rm-dict-headword { margin: 0; font-family: var(--font-display); font-size: 26px; font-weight: 700; line-height: 1.15; }
.rm-dict-ipa { margin-top: 2px; font-family: var(--font-mono); font-size: 12px; color: var(--ink-secondary); }
.rm-dict-head .rm-icon-button { width: 30px; height: 30px; border: 1px solid var(--line-hairline); border-radius: var(--radius-control); display: grid; place-items: center; color: var(--ink); }
.rm-dict-head .icon { width: 15px; height: 15px; }
.rm-dict-inflection { margin: 0; font-size: 12px; color: var(--ink-secondary); white-space: normal; }
.rm-dict-lemma { display: flex; align-items: baseline; gap: 8px; }
.rm-dict-lemma strong { font-family: var(--font-reading); font-size: 17px; font-weight: 600; }
.rm-dict-lemma em { font-size: 12px; color: var(--ink-secondary); }
.rm-dict-senses { margin: 0; padding-left: 18px; font-size: 14px; line-height: 1.5; white-space: normal; }
.rm-dict-senses li + li { margin-top: 6px; }
.rm-dict-example { display: block; margin-top: 2px; font-size: 12px; color: var(--ink-secondary); }
.rm-dict-example [lang='fr'] { font-family: var(--font-reading); font-style: italic; }
.rm-dict-save {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; min-height: 30px; padding: 0 11px;
  border: 1px solid var(--accent); border-radius: var(--radius-control); font-size: 13px; font-weight: 500; color: var(--accent);
}
.rm-dict-save .icon { width: 14px; height: 14px; }

/* ---------- 复述视图 ---------- */
.rm-recite {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; padding: 30px 28px 0; text-align: center;
  opacity: 0; visibility: hidden; transition: opacity 260ms ease, visibility 0s 260ms;
}
.rm-progress { display: flex; gap: 4px; width: 200px; margin-bottom: 14px; }
.rm-progress span { flex: 1; height: 3px; border-radius: 2px; background: var(--line-hairline); }
.rm-progress [data-progress='recited'] { background: var(--ink-placeholder); }
.rm-progress [data-progress='current'] { background: var(--ink); }
.rm-position { margin: 0; font-size: 12px; color: var(--ink-secondary); font-variant-numeric: tabular-nums; }
.rm-recently { margin: 10px 0 0; font-family: var(--font-reading); font-size: 14px; color: var(--ink-placeholder); }
.rm-keyword { margin: 6px 0 0; font-family: var(--font-display); font-size: 44px; font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
.rm-hint { width: 100%; margin-top: 22px; border-top: 1px solid var(--line-hairline); text-align: left; }
.rm-hint-toggle { display: flex; align-items: center; justify-content: space-between; min-height: 34px; font-size: 12px; color: var(--ink-secondary); }
.rm-hint-toggle .icon { width: 14px; height: 14px; transition: transform 200ms ease; }
.rm-hint-body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 28px; align-items: baseline; opacity: 0; transform: translateY(4px); }
.rm-hint-title { margin: 0; font-size: 11px; color: var(--ink-secondary); }
.rm-hint-english { margin: 0; font-size: 14px; line-height: 1.5; color: var(--ink-secondary); }
.rm-hint-french { margin: 0; font-family: var(--font-reading); font-size: 16px; line-height: 1.5; }
.rm-hint-french .rm-gap { color: var(--ink-placeholder); letter-spacing: 0.1em; }

/* ---------- 底部：播放器 / 复述操作条 ---------- */
.rm-bottom { position: relative; border-top: 1px solid var(--line-hairline); background: var(--surface-panel); }
.rm-player, .rm-actionbar { position: absolute; inset: 0; display: flex; align-items: center; gap: 18px; padding: 0 20px; transition: opacity 220ms ease; }
.rm-transport { display: flex; align-items: center; gap: 4px; }
.rm-transport > .icon { width: 30px; color: var(--ink-secondary); }
.rm-play { position: relative; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--brand-solid); color: var(--ink-on-brand); }
.rm-play .icon { position: absolute; width: 18px; height: 18px; }
.rm-play .rm-icon-play { opacity: 0; }
.rm-play::after { content: ''; position: absolute; inset: 0; border-radius: 50%; box-shadow: 0 0 0 0 var(--focus-ring); }
.rm-timeline { flex: 1; display: flex; align-items: center; gap: 12px; min-width: 0; }
.rm-clock { position: relative; font-family: var(--font-mono); font-size: 12px; color: var(--ink-secondary); font-variant-numeric: tabular-nums; white-space: nowrap; }
.rm-clock [data-clock] { display: none; }
.rm-range { position: relative; flex: 1; height: 4px; border-radius: 2px; background: var(--line-strong); }
.rm-range-fill { position: absolute; inset: 0 auto 0 0; width: var(--rm-progress, 4%); border-radius: inherit; background: var(--brand-solid); }
.rm-range-fill::after { content: ''; position: absolute; right: -6px; top: -4px; width: 12px; height: 12px; border-radius: 50%; background: var(--brand-solid); }
.rm-options { display: flex; align-items: center; gap: 6px; }
.rm-chip { display: inline-flex; align-items: center; gap: 6px; min-height: 30px; padding: 0 11px; border: 1px solid var(--ink); border-radius: 99px; font-size: 12px; color: var(--ink); }
.rm-chip .icon { width: 14px; height: 14px; }
.rm-rate { min-width: 46px; min-height: 30px; display: grid; place-items: center; border: 1px solid var(--line-hairline); border-radius: var(--radius-control); font-family: var(--font-mono); font-size: 12px; }

.rm-actionbar { justify-content: space-between; opacity: 0; visibility: hidden; }
.rm-keys { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--ink-secondary); }
.rm-keys kbd { display: inline-block; min-width: 22px; margin-right: 5px; padding: 1px 6px; border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: 4px; font-family: var(--font-ui); font-size: 11px; color: var(--ink); text-align: center; }
.rm-buttons { display: flex; gap: 8px; }
.rm-button { display: inline-flex; align-items: center; min-height: 32px; padding: 0 13px; border-radius: var(--radius-control); font-size: 13px; font-weight: 500; }
.rm-button--secondary { border: 1px solid var(--line-strong); background: var(--surface-panel); }
.rm-button--primary { background: var(--ink); color: var(--ink-on-ink); }

/* 暂停时的译文卡片：反相面，和 sentenceTranslationStrip.css 同一套映射 */
.rm-card {
  --surface-panel: var(--inverse-surface); --line-hairline: var(--inverse-line); --ink: var(--inverse-ink);
  --ink-secondary: var(--inverse-ink-secondary); --speaking-tint: var(--inverse-speaking-tint); --surface-sunken: var(--inverse-surface-sunken);
  position: absolute; left: 16px; right: 16px; bottom: calc(100% + 10px); z-index: 5;
  display: flex; flex-direction: column; gap: 8px; padding: 10px 14px;
  border: 1px solid var(--line-hairline); border-radius: var(--radius-card); background: var(--surface-panel); box-shadow: var(--shadow-float); color: var(--ink);
  opacity: 0; visibility: hidden; transform: translateY(4px);
}
.rm-card-word { display: flex; align-items: baseline; gap: 8px; padding-bottom: 8px; border-bottom: 1px solid var(--line-hairline); }
.rm-card-surface { font-family: var(--font-reading); font-size: 16px; font-weight: 600; padding: 0 3px; border-radius: 3px; background: var(--speaking-tint); }
.rm-card-arrow { font-size: 12px; color: var(--ink-secondary); }
.rm-card-word strong { font-family: var(--font-reading); font-size: 15px; font-weight: 600; }
.rm-card-word em { font-size: 12px; color: var(--ink-secondary); }
.rm-card-gloss { flex: 1; font-size: 14px; }
.rm-card-actions { display: flex; align-items: center; gap: 4px; align-self: center; color: var(--ink-secondary); font-size: 12px; }
.rm-card-actions .icon { width: 15px; height: 15px; }
.rm-card-actions span { display: inline-flex; align-items: center; gap: 5px; padding: 3px 7px; border-radius: var(--radius-control); background: var(--surface-sunken); color: var(--ink); }
.rm-card p { margin: 0; font-size: 14px; line-height: 1.5; }

/* 点击涟漪：只在「点词」那一下出现一次 */
.rm-tap { position: absolute; left: 50%; top: 50%; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%; background: var(--accent); opacity: 0; pointer-events: none; }

/* ==========================================================================
   节点 0 · 播放 → 第一句逐词跟读
   ========================================================================== */
.reader-mock[data-step='0'] .rm-s1 { background: var(--current-sentence-tint); }
.reader-mock[data-step='0'] .rm-s1 .word { animation: rm-speak 330ms linear calc(250ms + var(--i) * 330ms) both; animation-fill-mode: none; }
.reader-mock[data-step='0'] .rm-range-fill { animation: rm-range 3.4s linear both; --rm-from: 3%; --rm-to: 15%; }
.reader-mock[data-step='0'] [data-clock='0'] { display: inline; }
.reader-mock[data-step='0'] .rm-play::after { animation: rm-press 500ms ease-out 50ms both; }

/* ==========================================================================
   节点 1 · 读到第二句，在 souri 上暂停 → 词义 + 整句英文
   ========================================================================== */
.reader-mock:is([data-step='1'], [data-step='2']) .rm-s2 { background: var(--current-sentence-tint); }
.reader-mock[data-step='1'] .rm-s2 .rm-pre { animation: rm-speak 260ms linear calc(var(--i) * 260ms) both; animation-fill-mode: none; }
.reader-mock[data-step='1'] .rm-souri { animation: rm-hold 1ms linear 780ms both; }
.reader-mock:is([data-step='1'], [data-step='2']) .rm-range-fill { --rm-progress: 19%; }
.reader-mock[data-step='1'] .rm-range-fill { animation: rm-range 780ms linear both; --rm-from: 15%; --rm-to: 19%; }
.reader-mock[data-step='1'] [data-clock='0'] { display: inline; animation: rm-out 1ms 780ms both; }
.reader-mock[data-step='1'] [data-clock='1'] { display: inline; position: absolute; left: 0; animation: rm-in 1ms 780ms both; }
.reader-mock[data-step='2'] [data-clock='1'] { display: inline; }
.reader-mock[data-step='1'] .rm-play::after { animation: rm-press 500ms ease-out 760ms both; }
.reader-mock[data-step='1'] .rm-icon-pause { animation: rm-out 1ms 780ms both; }
.reader-mock[data-step='1'] .rm-icon-play { animation: rm-in 1ms 780ms both; }
.reader-mock[data-step='2'] .rm-icon-pause { opacity: 0; }
.reader-mock[data-step='2'] .rm-icon-play { opacity: 1; }
.reader-mock[data-step='1'] .rm-card { animation: rm-card-in 220ms ease-out 1000ms both; }

/* ==========================================================================
   节点 2 · 点 souri → 选中 + 词典面板滑出（窄屏真实行为：词典开着时译文卡片让位）
   ========================================================================== */
.reader-mock[data-step='2'] .rm-read { grid-template-columns: minmax(0, 1fr) 236px; transition-delay: 380ms; }
.reader-mock[data-step='2'] .rm-dictionary { opacity: 1; transition-delay: 460ms; }
.reader-mock[data-step='2'] .rm-souri { background: var(--accent-tint); box-shadow: inset 0 -2px 0 var(--accent); }
.reader-mock[data-step='2'] .rm-tap { animation: rm-tap 520ms ease-out 80ms both; }
.reader-mock[data-step='2'] .rm-card { animation: rm-card-out 160ms ease-in 300ms both; }

/* ==========================================================================
   节点 3 · 切到 Recite → 情节关键词，按 H 摊开第 1 层提示
   ========================================================================== */
.reader-mock[data-step='3'] .rm-read { opacity: 0; }
.reader-mock[data-step='3'] .rm-recite { opacity: 1; visibility: visible; transition-delay: 120ms, 0s; }
.reader-mock[data-step='3'] .rm-player { opacity: 0; }
.reader-mock[data-step='3'] .rm-actionbar { opacity: 1; visibility: visible; }
.reader-mock[data-step='3'] .rm-hint-body { animation: rm-hint-open 260ms ease-out 1700ms both; padding-bottom: 12px; }
.reader-mock[data-step='3'] .rm-hint-toggle { animation: rm-hint-label 1ms 1700ms both; }
.reader-mock[data-step='3'] .rm-hint-toggle .icon { animation: rm-flip 200ms ease 1700ms both; }
.reader-mock[data-step='3'] .rm-kbd-h { animation: rm-key 300ms ease-out 1450ms both; }

@keyframes rm-speak { from, to { background: var(--speaking-tint); } }
@keyframes rm-hold { to { background: var(--speaking-tint); } }
@keyframes rm-range { from { width: var(--rm-from); } to { width: var(--rm-to); } }
@keyframes rm-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes rm-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes rm-press { 0% { box-shadow: 0 0 0 0 var(--focus-ring); transform: scale(1); } 30% { transform: scale(0.92); } 100% { box-shadow: 0 0 0 10px transparent; transform: scale(1); } }
@keyframes rm-card-in { from { opacity: 0; visibility: visible; transform: translateY(4px); } to { opacity: 1; visibility: visible; transform: none; } }
@keyframes rm-card-out { from { opacity: 1; visibility: visible; transform: none; } to { opacity: 0; visibility: hidden; transform: translateY(4px); } }
@keyframes rm-tap { from { opacity: 0.35; transform: scale(0.3); } to { opacity: 0; transform: scale(1.4); } }
@keyframes rm-hint-open { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
@keyframes rm-hint-label { to { color: var(--ink); } }
@keyframes rm-flip { to { transform: rotate(180deg); } }
@keyframes rm-key { 0%, 100% { transform: none; } 40% { transform: translateY(1px); border-bottom-width: 1px; background: var(--surface-sunken); } }

/* 暂停演示（Tweaks）：所有节点内动画停在当前帧 */
.reader-mock[data-paused] *, .reader-mock[data-paused] *::before, .reader-mock[data-paused] *::after { animation-play-state: paused !important; }

/* reduced-motion：不自动播放，节点内动画直接落到终态（全局的 0.01ms 规则 + fill both），节点仍可点着切换 */
@media (prefers-reduced-motion: reduce) {
  .reader-mock *, .reader-mock *::before, .reader-mock *::after { animation-duration: 1ms !important; animation-delay: 0ms !important; transition-duration: 1ms !important; transition-delay: 0ms !important; }
  .reader-mock .word { animation: none !important; }
  .reader-mock[data-step='1'] .rm-souri { background: var(--speaking-tint); }
}