/* ═══════════════════════════════════════════════════════════════════════════
   public/assets/css/phat-am.css — tab PHÁT ÂM (/phat-am · /phat-am/{slug}), 27/10/2026.
   Chép khuôn .da-* của NAVS Deutsch (/pronunciation, public/deu/pronunciation) — đổi tiền tố pa-, màu qua token
   var(--color-*) / --lv-* (tự lật ở nền tối) — KHÔNG hex. Markup: public/phat-am.php, public/phat-am-lesson.php.
   ═══════════════════════════════════════════════════════════════════════════ */
.pa {
  --pa-ok:      var(--color-success);
  --pa-ok-fg:   var(--color-success-deep);
  --pa-ok-soft: var(--color-success-soft);
  --pa-no:      var(--color-danger);
  --pa-no-soft: var(--color-danger-soft);
  --pa-link:    var(--lv-brand-fg, var(--color-primary-hover));
}
/* Nền tối (28/10/2026): --lv-brand-fg (công thức NAVS) với đỏ TTKK chỉ ~3:1 ⇒ chữ đỏ dùng --color-primary-deep (lật sáng). */
html[data-user-theme="dark"] .pa { --pa-link: var(--color-primary-deep); }
@media (prefers-color-scheme: dark) {
  html[data-user-theme="system"] .pa { --pa-link: var(--color-primary-deep); }
}
.pa-band { --lv-band-pb: 104px; }
.pa-band--lesson { --lv-band-pb: 96px; }
.pa-hero { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.pa-hero__l { flex: 1 1 460px; min-width: 0; }
.pa-title { font-size: clamp(26px, 3vw, 38px); font-weight: 700; letter-spacing: -.025em; line-height: 1.15; color: var(--lv-on); }
.pa-title span { color: var(--lv-mint); }
.pa-title small { display: block; margin-top: 6px; font-size: .5em; font-weight: 500; letter-spacing: 0; opacity: .8; }
.pa-kicker { font-size: 13px; color: var(--lv-on-2); margin: 0 0 8px !important; }
.pa-kicker a { color: var(--lv-on); text-decoration: underline; text-underline-offset: 3px; }
.pa-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.pa-chips .lv-chip-d { gap: 6px; }
.pa-chip--ok { color: var(--lv-on); background: color-mix(in srgb, var(--pa-ok) 45%, transparent); }
.pa-progress { flex: 0 0 auto; width: min(290px, 100%); display: flex; flex-direction: column; gap: 8px; padding: 18px 20px; color: var(--lv-on); }
.pa-progress small { font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--lv-mint); }
.pa-progress b { font-size: 34px; font-weight: 700; letter-spacing: -.02em; line-height: 1; }
.pa-progress b span { font-size: 15px; font-weight: 500; opacity: .75; margin-left: 4px; }
.pa-progress__bar { display: block; height: 6px; border-radius: 999px; background: color-mix(in srgb, var(--color-on-dark) 16%, transparent); }
.pa-progress__bar i { display: block; height: 100%; border-radius: inherit; background: var(--lv-mint); }
.pa-progress .lv-btn { margin-top: 4px; }
.pa-body { position: relative; z-index: 1; margin-top: -76px; }

/* Trang tổng: thẻ Bảng Pinyin + lưới 12 bài */
.pa .lv-card.pa-table { display: flex; align-items: center; gap: 18px; padding: 18px 20px; margin-bottom: 26px; text-decoration: none; color: var(--lv-text); transition: border-color .15s; }
.pa-table:hover { border-color: color-mix(in srgb, var(--color-primary) 35%, var(--lv-hair)); }
.pa-table__ic { flex: none; width: 64px; height: 64px; display: grid; place-items: center; border-radius: 16px; background: var(--lv-wash); color: var(--pa-link); font-family: var(--font-cjk); font-size: 30px; font-weight: 700; }
.pa-table__t { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.pa-table__t b { font-size: 17px; font-weight: 700; color: var(--lv-ink); }
.pa-table__t small { font-size: 14px; line-height: 1.5; color: var(--lv-muted); }
.pa-table .lv-btn { flex: none; }
.pa-sec__h { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin: 0 0 12px; }
.pa-sec__h h2 { font-size: 19px; font-weight: 750; color: var(--lv-ink); margin: 0 !important; }
.pa-sec__h p { margin: 2px 0 0 !important; font-size: 13.5px; color: var(--lv-muted); }
.pa-grid { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.pa .lv-card.pa-card { height: 100%; display: flex; flex-direction: column; gap: 6px; padding: 16px 18px; text-decoration: none; color: var(--lv-text);
  border-color: color-mix(in srgb, var(--color-primary) 14%, var(--lv-hair));
  box-shadow: 0 1px 2px color-mix(in srgb, var(--color-primary-deep) 6%, transparent), 0 14px 28px -24px color-mix(in srgb, var(--color-primary-deep) 55%, transparent);
  transition: border-color .15s, transform .15s, box-shadow .15s; }
.pa-card:hover { border-color: color-mix(in srgb, var(--color-primary) 45%, var(--lv-hair)); transform: translateY(-2px); }
.pa-card__top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 4px; }
/* 27/10/2026: màu đậm hơn (chủ dự án: thẻ "nhạt hơn các phần khác") — ô số đỏ đặc, chữ Trung màu thương hiệu, mô tả sẫm hơn */
.pa-card__no { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; font-size: 14px; font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--pa-link)); color: var(--color-on-dark);
  box-shadow: 0 6px 12px -8px color-mix(in srgb, var(--color-primary) 90%, transparent); }
.pa-card.is-done .pa-card__no { background: var(--pa-ok); box-shadow: none; }
.pa-card__zh { font-family: var(--font-cjk); font-size: 12.5px; font-weight: 600; color: var(--pa-link); text-align: right; }
.pa-card b { font-size: 16px; font-weight: 700; color: var(--lv-ink); }
.pa-card small { font-size: 13.5px; line-height: 1.5; color: color-mix(in srgb, var(--lv-muted) 70%, var(--lv-ink)); }
.pa-card__f { margin-top: auto; padding-top: 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.pa-card__st { height: 24px; display: inline-flex; align-items: center; padding: 0 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: var(--lv-sunken); color: color-mix(in srgb, var(--lv-muted) 80%, var(--lv-ink)); }
.pa-card.is-done .pa-card__st { background: var(--pa-ok-soft); color: var(--pa-ok-fg); }
.pa-card.is-next .pa-card__st { background: var(--lv-wash); color: var(--pa-link); }
.pa-card__go { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; font-weight: 700; color: var(--pa-link); }
.pa-card.is-next { border-color: color-mix(in srgb, var(--color-primary) 45%, var(--lv-hair)); box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-primary) 18%, transparent); }

/* Trang một bài: 2 cột — lý thuyết dính bên trái, luyện bên phải.
   .lv-card của TTKK không có đệm sẵn (NAVS có) ⇒ đặt đệm cho các thẻ của trang ở đây. */
.pa .lv-card:is(.pa-explain, .pa-group, .pa-quiz) { padding: 20px 22px; }
.pa-cols { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 18px; align-items: start; }
.pa-col { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.pa-col--side { position: sticky; top: calc(var(--nav-h, 64px) + 14px); max-height: calc(100vh - var(--nav-h, 64px) - 28px); overflow-y: auto; scrollbar-width: thin; border-radius: var(--lv-r, 16px); }
.pa-col h2 { font-size: 16.5px; font-weight: 700; color: var(--lv-ink); margin: 0 0 4px !important; }
.pa-explain h2 { margin-bottom: 10px !important; }
.pa-explain p, .pa-explain li { font-size: 14.5px; line-height: 1.65; color: var(--lv-text); }
.pa-explain p { margin: 0 0 10px !important; }
.pa-explain ul { margin: 0 0 10px; padding-left: 20px; }
.pa-explain :is(b, strong) { color: var(--lv-ink); }
.pa-explain .cv-zh { font-family: var(--font-cjk); color: var(--lv-ink); }
.pa-toc { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px !important; }
.pa-toc small { margin-bottom: 6px; font-size: 11.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--lv-muted); }
.pa-toc a { padding: 6px 8px; border-radius: 8px; font-size: 13.5px; color: var(--lv-text); text-decoration: none; }
.pa-toc a:hover { background: var(--lv-sunken); color: var(--lv-ink); }
.pa-group, .pa-quiz { scroll-margin-top: calc(var(--nav-h, 64px) + 14px); }
.pa-group__h { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.pa-group__h .lv-btn { flex: 0 0 auto; gap: 6px; }
.pa-playall.is-on { background: var(--lv-wash); border-color: var(--color-primary); color: var(--lv-ink); }
.pa-tip { color: var(--lv-muted); font-size: 13.5px; line-height: 1.5; margin: 0 !important; }
.pa-words { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.pa-sents { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.pa-w, .pa-s { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 4px 12px; padding: 10px 12px; border: 1px solid var(--lv-hair); border-radius: 14px; background: var(--lv-surface); }
.pa-w__say { width: 40px; height: 40px; display: grid; place-items: center; border: 0; border-radius: 50%; cursor: pointer; background: var(--lv-wash); color: var(--pa-link); transition: background .15s, color .15s; }
.pa-w__say:hover, .pa-w__say.is-playing { background: var(--color-primary); color: var(--color-on-dark); }
.pa-w__m { display: flex; flex-direction: column; min-width: 0; line-height: 1.35; }
.pa-w__m b { font-size: 17px; font-weight: 600; color: var(--lv-ink); }
.pa-w__m b .zh { margin-left: 6px; font-family: var(--font-cjk); font-size: 15px; font-weight: 500; color: var(--lv-muted); }
.pa-w__m b.zh-big { font-family: var(--font-cjk); font-size: 19px; }
.pa-s .pa-w__m b { font-family: var(--font-cjk); font-size: 18px; }
.pa-w__py { font-size: 13.5px; color: var(--lv-text); }
.pa-w__vi { font-size: 13px; color: var(--lv-muted); }
.pa-mic { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--lv-hair); background: var(--lv-surface); color: var(--lv-ink); cursor: pointer; }
.pa-mic:hover { border-color: var(--color-primary); color: var(--pa-link); }
.pa-mic.is-rec { background: var(--pa-no); border-color: var(--pa-no); color: var(--color-on-dark); animation: pa-pulse 1.2s ease infinite; }
@keyframes pa-pulse { 50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--pa-no) 22%, transparent); } }
.pa-sc { grid-column: 1 / -1; font-size: 13px; color: var(--lv-muted); }
.pa-sc b { margin-right: 4px; }
.pa-sc.is-good b { color: var(--pa-ok-fg); }
.pa-sc.is-mid b { color: var(--color-accent-deep); }
.pa-sc.is-low b { color: var(--pa-no); }
.pa-quiz__stage { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.pa-quiz__stage > .lv-btn { gap: 8px; }
.pa-quiz__n { font-size: 14px; font-weight: 600; color: var(--lv-ink); margin: 0 !important; }
.pa-quiz__opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; width: 100%; }
.pa-opt { display: flex; flex-direction: column; gap: 4px; padding: 16px; border: 1.5px solid var(--lv-hair); border-radius: 14px; background: var(--lv-surface); font: inherit; text-align: left; cursor: pointer; color: var(--lv-text); transition: border-color .12s, background .12s; }
.pa-opt b { font-size: 22px; font-weight: 600; color: var(--lv-ink); }
.pa-opt b .zh { margin-left: 8px; font-family: var(--font-cjk); font-size: 18px; font-weight: 500; color: var(--lv-muted); }
.pa-opt small { color: var(--lv-muted); font-size: 13px; }
.pa-opt:hover:not(:disabled) { border-color: color-mix(in srgb, var(--color-primary) 40%, var(--lv-hair)); }
.pa-opt.is-right { border-color: var(--pa-ok); background: var(--pa-ok-soft); }
.pa-opt.is-wrong { border-color: var(--pa-no); background: var(--pa-no-soft); }
.pa-quiz__fb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-weight: 600; color: var(--lv-ink); margin: 0 !important; }
.pa-quiz__focus { font-weight: 400; color: var(--lv-muted); font-size: 13.5px; }
.pa-quiz__res { font-size: 18px; font-weight: 700; color: var(--lv-ink); margin: 0 !important; }
.pa-end { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; padding: 26px 22px !important; }
.pa-end__ic { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 50%; background: var(--lv-sunken); color: var(--lv-muted); }
.pa-end__ic.is-done { background: var(--pa-ok-soft); color: var(--pa-ok-fg); }
.pa-end p { max-width: 46ch; font-size: 14.5px; color: var(--lv-text); margin: 0 !important; }
.pa-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
.pa .lv-card.pa-pager__a { display: flex; align-items: center; gap: 12px; padding: 14px 16px; text-decoration: none; color: var(--lv-muted); transition: border-color .15s; }
.pa-pager__a:hover { border-color: color-mix(in srgb, var(--color-primary) 35%, var(--lv-hair)); }
.pa-pager__a span { display: flex; flex-direction: column; min-width: 0; }
.pa-pager__a small { font-size: 12px; color: var(--lv-muted); }
.pa-pager__a b { font-size: 14.5px; font-weight: 600; color: var(--lv-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pa-pager__a--next { grid-column: 2; justify-content: flex-end; text-align: right; }

@media (max-width: 1100px) { .pa-words { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 960px) {
  .pa-cols { grid-template-columns: 1fr; }
  .pa-col--side { position: static; max-height: none; overflow: visible; }
  .pa-toc { display: none; }
}
@media (max-width: 720px) {
  .pa-body { margin-top: -64px; }
  .pa-progress { width: 100%; }
  .pa .lv-card.pa-table { flex-wrap: wrap; }
  .pa-table .lv-btn { width: 100%; justify-content: center; }
}
@media (max-width: 560px) {
  .pa .lv-card { padding: 16px; }
  .pa-group__h { flex-direction: column; }
  .pa-quiz__opts { grid-template-columns: minmax(0, 1fr); }
  .pa-pager { grid-template-columns: 1fr; }
  .pa-pager__a--next { grid-column: 1; }
}