/* Japanese shadowing lesson: sentence groups, player controls and dialogues.
   Page frame (hero, side panel, finish block): lesson-frame.css. */
.bv-shadow {
  --bvsh: var(--lc, #2f6fed);
  --bvsh-soft: var(--lc-soft, #eef2ff);
  --bvsh-soft2: var(--lc-soft2, #e0e7ff);
  --bvsh-ink: var(--lc-ink, #312e81);
  --bvsh-line: #e5e7eb;
  --bvsh-mute: #64748b;
  --bvsh-jp: var(--lf-jp, "Roboto", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif);
}
.bv-shadow [hidden] { display: none !important; }
.bv-shadow button:focus-visible, .bv-shadow a:focus-visible, .bv-shadow summary:focus-visible,
.bv-shadow input:focus-visible { outline: 3px solid var(--lc-line, #818cf8); outline-offset: 2px; }
.bv-shadow__h2 { margin: 0 0 .45rem; font-size: clamp(1.25rem, 2.2vw, 1.5rem); font-weight: 800; }
.bv-shadow__lead { margin: 0 0 1rem; max-width: 72ch; line-height: 1.65; color: var(--bvsh-mute); }

/* ways to practise (inside the "Cách luyện bài này" guide) */
.bv-shadow__modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); gap: .9rem 1.2rem; padding: 0 1.1rem 1.1rem; }
.bv-shadow__mode h3 { margin: 0 0 .3rem; font-size: .95rem; font-weight: 800; }
.bv-shadow__mode p { margin: 0; font-size: .9rem; line-height: 1.65; color: #334155; }
.bv-shadow__availability { display: inline-block; margin-top: .45rem; padding: .15rem .55rem; border-radius: 999px; background: var(--bvsh-soft); font-size: .74rem; color: var(--bvsh-ink); }

/* buttons */
.bv-shadow__btn, .bv-shadow__chip {
  display: inline-flex; align-items: center; justify-content: center; gap: .3rem;
  min-height: 2.3rem; padding: .35rem .8rem; border: 1px solid var(--bvsh-line); border-radius: 10px;
  background: #fff; color: #334155; font-size: .84rem; font-weight: 600; cursor: pointer;
}
.bv-shadow__btn:hover, .bv-shadow__chip:hover { border-color: var(--bvsh); color: var(--bvsh-ink); }
.bv-shadow__btn[aria-pressed="true"], .bv-shadow__chip[aria-pressed="true"] { background: var(--bvsh); border-color: var(--bvsh); color: #fff; }
.bv-shadow__chip { min-height: 2rem; padding: .25rem .65rem; border-radius: 999px; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------ groups */
.bv-shadow__level { margin-bottom: 2rem; }
.bv-shadow__lvhead { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem .8rem; margin-bottom: .8rem; }
.bv-shadow__lvno { display: grid; place-items: center; flex: 0 0 auto; width: 2.3rem; height: 2.3rem; border-radius: 12px; background: var(--lc-grad, var(--bvsh)); color: #fff; font-weight: 800; }
.bv-shadow__lvtitle { flex: 1 1 12rem; min-width: 0; margin: 0; font-size: 1.15rem; font-weight: 800; line-height: 1.4; }
.bv-shadow__lvcount { margin: 0; padding: .2rem .65rem; border-radius: 999px; background: #f1f5f9; font-size: .8rem; font-weight: 700; color: var(--bvsh-mute); font-variant-numeric: tabular-nums; }
.bv-shadow__btn--run i { font-size: 1rem; }
.bv-shadow__list { display: grid; gap: .6rem; margin: 0; padding: 0; list-style: none; }

/* ------------------------------------------------------------ sentences */
.bv-shadow__item {
  display: grid; grid-template-columns: 2.1rem minmax(0, 1fr) auto; align-items: start; gap: .8rem;
  padding: .9rem 1rem; border: 1px solid var(--bvsh-line); border-radius: 16px; background: #fff;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.bv-shadow__no {
  display: grid; place-items: center; width: 2.1rem; height: 2.1rem; margin-top: .25rem; border-radius: 50%;
  background: #f1f5f9; color: var(--bvsh-mute); font-size: .82rem; font-weight: 800; font-variant-numeric: tabular-nums;
}
.bv-shadow__item.is-done { background: #fbfcfe; border-color: var(--bvsh-soft2); }
.bv-shadow__item.is-done .bv-shadow__no { background: var(--bvsh); color: #fff; }
.bv-shadow__item.is-done .bv-shadow__no span { display: none; }
.bv-shadow__item.is-done .bv-shadow__no::before { content: "✓"; }
.bv-shadow__item.is-playing, .bv-shadow__item:target { border-color: var(--bvsh); background: var(--bvsh-soft); box-shadow: 0 0 0 3px var(--bvsh-soft2); }
.bv-shadow__body { min-width: 0; overflow-wrap: anywhere; }
.bv-shadow__text { margin: 0; font-family: var(--bvsh-jp); font-size: clamp(1.15rem, 2vw, 1.38rem); line-height: 1.8; color: #0f172a; }
.bv-shadow__reading { margin: .05rem 0 0; font-family: var(--bvsh-jp); font-size: .92rem; line-height: 1.75; color: #475569; }
.bv-shadow__romaji { margin: .1rem 0 0; font-size: .9rem; font-style: italic; line-height: 1.7; color: var(--bvsh-mute); }
.bv-shadow__extras { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem .5rem; margin-top: .5rem; }
.bv-shadow__reveal, .bv-shadow__usagebtn {
  display: inline-flex; align-items: center; gap: .3rem; min-height: 2rem; padding: .2rem .7rem;
  border: 1px solid var(--bvsh-line); border-radius: 999px; background: #fff;
  color: var(--bvsh-ink); font-size: .8rem; font-weight: 700; cursor: pointer;
}
.bv-shadow__reveal:hover, .bv-shadow__usagebtn:hover { border-color: var(--bvsh); }
.bv-shadow__reveal[aria-expanded="true"], .bv-shadow__usagebtn[aria-expanded="true"] { background: var(--bvsh-soft); border-color: var(--lc-line, var(--bvsh)); }
.bv-shadow__reveal { order: 1; }
.bv-shadow__usagebtn { order: 2; }
.bv-shadow__usage { order: 4; flex-basis: 100%; max-width: 70ch; margin: .15rem 0 0; font-size: .88rem; line-height: 1.65; color: #475569; }
.bv-shadow__usage strong { font-weight: 700; color: var(--bvsh-ink); }
.bv-shadow__vi { order: 3; flex-basis: 100%; margin: .15rem 0 0; font-size: .95rem; line-height: 1.6; color: #334155; }
.bv-shadow.is-hideja .bv-shadow__japanese, .bv-shadow.is-hideja .bv-shadow__dialogues .bv-shadow__text,
.bv-shadow.is-hidekana .bv-shadow__reading, .bv-shadow.is-hideromaji .bv-shadow__romaji { display: none; }

.bv-shadow__acts { display: flex; align-items: center; gap: .45rem; }
.bv-shadow__play {
  display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto;
  width: 2.6rem; height: 2.6rem; border: 1px solid var(--bvsh-line); border-radius: 50%;
  background: #fff; color: var(--bvsh); font-size: 1.05rem; cursor: pointer;
}
.bv-shadow__play:hover, .bv-shadow__play[aria-pressed="true"] { background: var(--bvsh); border-color: var(--bvsh); color: #fff; }
.bv-shadow__done {
  display: inline-flex; align-items: center; gap: .3rem; min-height: 2.6rem; padding: .35rem .75rem;
  border: 1px solid var(--bvsh-line); border-radius: 12px; background: #fff;
  color: #475569; font-size: .82rem; font-weight: 700; white-space: nowrap; cursor: pointer;
}
.bv-shadow__done:hover { border-color: var(--bvsh); color: var(--bvsh-ink); }
.bv-shadow__done[aria-pressed="true"] { background: var(--bvsh); border-color: var(--bvsh); color: #fff; }

/* ------------------------------------------------------------ dialogues */
.bv-shadow__dialogues { margin: 2.2rem 0 0; scroll-margin-top: calc(var(--lf-nav, 76px) + 14px); }
.bv-shadow__dialogue { margin-bottom: 1rem; }
.bv-shadow__turns { display: grid; gap: .8rem; margin: 0; padding: .2rem 1rem 1.1rem; list-style: none; }
.bv-shadow__turn { display: flex; align-items: flex-end; gap: .6rem; max-width: min(100%, 34rem); }
.bv-shadow__turn.is-b { flex-direction: row-reverse; margin-left: auto; }
.bv-shadow__avatar {
  display: grid; place-items: center; flex: 0 0 auto; width: 2.2rem; height: 2.2rem; border-radius: 50%;
  background: #fff; border: 1px solid var(--lc-line, #c7d2fe); color: var(--bvsh-ink); font-size: .9rem; font-weight: 800;
}
.bv-shadow__turn.is-b .bv-shadow__avatar { background: var(--bvsh); border-color: var(--bvsh); color: #fff; }
.bv-shadow__bubble { min-width: 0; padding: .55rem .8rem .65rem; border: 1px solid var(--bvsh-line); border-radius: 16px 16px 16px 4px; background: #fff; }
.bv-shadow__turn.is-b .bv-shadow__bubble { border-radius: 16px 16px 4px 16px; background: var(--bvsh-soft); border-color: var(--lc-line, #c7d2fe); }
.bv-shadow__speaker { display: block; font-size: .74rem; font-weight: 800; color: var(--bvsh); }
.bv-shadow__bubble .bv-shadow__text { font-size: 1.12rem; line-height: 1.75; }
.bv-shadow__dialoguevi { margin: .15rem 0 0; font-size: .9rem; color: #475569; }
.bv-shadow__sentence-link { display: inline-block; margin-top: .3rem; font-size: .78rem; font-weight: 700; color: var(--bvsh); }

@media (max-width: 767.98px) {
  .bv-shadow__item { grid-template-columns: 1.9rem minmax(0, 1fr); gap: .55rem .65rem; padding: .85rem; }
  .bv-shadow__no { width: 1.9rem; height: 1.9rem; margin-top: .2rem; }
  .bv-shadow__acts { grid-column: 2; justify-content: flex-start; }
  .bv-shadow__turns { padding-inline: .7rem; }
  .bv-shadow__avatar { width: 1.9rem; height: 1.9rem; font-size: .8rem; }
}
@media (prefers-reduced-motion: reduce) {
  .bv-shadow * { transition: none !important; scroll-behavior: auto; }
}