/* ═══════════════════════════════════════════════════════════════════════════
   public/assets/css/learn-task.css — trang NHIỆM VỤ lộ trình (App học v3, 22/09/2026):
   /lo-trinh-cua-toi/hoc · /doan-van · /luyen-tap · /dong-vai · /kiem-tra-noi.
   Chế độ tập trung: thanh trên riêng (lv_task_top) + thanh hành động ghim đáy trên điện thoại (.tk-dock).
   Token --lv-* (learn-shell.css) + .lv-btn/.lv-card/.lv-chip (learn-ui.css). KHÔNG hex cứng — tự lật ở chế độ tối.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Thanh trên: thoát · ngữ cảnh · tên việc · nút phải · vạch tiến độ ─────────────── */
.tk-top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60; padding-top: env(safe-area-inset-top, 0px);
  background: var(--lv-bg); border-bottom: 1px solid var(--lv-hair); font-family: var(--lv-font);
}
.tk-top__in { max-width: var(--tk-max, 1180px); height: 63px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 14px; }
.tk-top__x {
  width: 40px; height: 40px; flex: none; border-radius: 50%; display: grid; place-items: center; text-decoration: none;
  border: 1px solid var(--lv-hair); background: var(--lv-surface); color: var(--lv-muted);
  transition: color var(--lv-dur) var(--lv-ease), border-color var(--lv-dur) var(--lv-ease);
}
.tk-top__x:hover { color: var(--lv-ink); border-color: var(--lv-border); text-decoration: none; }
.tk-top__x:focus-visible { outline: 2px solid var(--lv-brand-fg); outline-offset: 2px; }
.tk-top__t { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; line-height: 1.3; }
.tk-top__t small { font-size: 12px; font-weight: 600; color: var(--lv-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tk-top__t b { font-size: 15px; font-weight: 700; color: var(--lv-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tk-top__r { flex: none; display: flex; align-items: center; gap: 8px; }
.tk-top__bar { position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; }
.tk-top__bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--color-primary), var(--lv-brand-strong)); transition: width .35s var(--lv-ease); }
.tk-top-pad { height: calc(64px + env(safe-area-inset-top, 0px)); }
.tk-ibtn {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; text-decoration: none;
  border: 1px solid var(--lv-hair); background: var(--lv-surface); color: var(--lv-muted);
}
.tk-ibtn:hover { color: var(--lv-ink); border-color: var(--lv-border); text-decoration: none; }

/* Nút đánh dấu hoàn thành (lv_task_mark): hai icon, CSS chọn theo data-done — JS chỉ đổi data-done + nhãn */
.js-mark .tk-i-on, .js-mark[data-done="1"] .tk-i-off { display: none; }
.js-mark[data-done="1"] .tk-i-on { display: block; }
/* Xong bài: nút đánh dấu lùi thành nút viền, "Bài tiếp theo" thành nút chính (lv_task_actions) */
.tk-next { display: none !important; }
.tk.is-done .tk-next { display: inline-flex !important; }
.tk.is-done .tk-mark-main { background: var(--lv-surface); color: var(--lv-ink); border-color: var(--lv-border); box-shadow: none; }
.tk.is-done .tk-mark-main:hover { background: var(--lv-tint); color: var(--lv-ink); }

/* ── Thanh hành động ghim đáy (chỉ điện thoại/máy tính bảng — tầm ngón cái) ──────────── */
.tk-dock, .tk-dock-pad { display: none; }
@media (max-width: 1023px) {
  .tk-dock {
    display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
    background: var(--lv-surface); border-top: 1px solid var(--lv-hair); box-shadow: 0 -10px 28px -22px color-mix(in srgb, var(--lv-shade) 60%, transparent);
  }
  .tk-dock__in { display: flex; gap: 10px; max-width: 640px; margin: 0 auto; }
  .tk-dock__in .lv-btn { flex: 1 1 0; padding: 0 12px; font-size: 14.5px; }
  .tk-dock-pad { display: block; height: calc(80px + env(safe-area-inset-bottom, 0px)); }
  .tk-top__in { height: 57px; padding: 0 12px; gap: 12px; }
  .tk-top-pad { height: calc(58px + env(safe-area-inset-top, 0px)); }
  .tk-top__t b { font-size: 14.5px; }
  .tk-top__x, .tk-ibtn { width: 38px; height: 38px; }
  .tk-desk, .tk.is-done .tk-next.tk-desk { display: none !important; }
}

/* ── Khung nội dung ──────────────────────────────────────────────────────────────── */
/* --tk-max: bề rộng khung (gồm lề 24px hai bên) — thanh trên dùng chung để nút thoát thẳng mép nội dung */
.tk { --tk-max: 1008px; background: var(--lv-bg); min-height: 100vh; min-height: 100dvh; }
.tk-wrap { max-width: var(--tk-max); margin: 0 auto; padding: 24px 24px 72px; }
@media (max-width: 1023px) { .tk-wrap { padding: 14px 16px 24px; } }

/* Thẻ nhắc (học thử · vừa tự đánh dấu xong) */
.tk-note { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; padding: 14px 16px; border-radius: 16px; background: var(--lv-surface); border: 1px solid var(--lv-hair); box-shadow: var(--lv-sh-1); }
.tk-note p { flex: 1; min-width: 0; font-size: 13.5px; line-height: 1.55; color: var(--lv-text); }
.tk-note p strong { display: block; color: var(--lv-ink); font-size: 14.5px; }
.tk-note--ok { background: var(--lv-wash); border-color: transparent; box-shadow: none; }
.tk-note--ok .lv-ic { background: var(--lv-brand-strong); color: var(--lv-on); }
@media (max-width: 640px) { .tk-note { flex-wrap: wrap; } .tk-note .lv-btn { width: 100%; } }

/* ── Thẻ đầu bài (teal chồng lớp) ────────────────────────────────────────────────── */
.tk-hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 28px; padding: 28px 30px; border-radius: 24px; }
.tk-hero h1 { margin-top: 0; font-size: 28px; line-height: 1.2; font-weight: 800; letter-spacing: -.025em; color: var(--lv-on); text-wrap: balance; }
.tk-hero__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tk-hero__chips .lv-chip-d .lv-i { color: var(--lv-mint); }
.tk-done-chip { display: none !important; }
.tk.is-done .tk-done-chip { display: inline-flex !important; }
.tk-hero__act { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.tk-hero__stat { display: flex; flex-direction: column; align-items: center; gap: 10px; min-width: 150px; text-align: center; }
.tk-hero__stat small { font-size: 13px; color: var(--lv-on-2); }
.tk-hero__stat small b { color: var(--lv-on); font-weight: 700; }
.tk-hero .lv-ring b { font-size: 22px; }
@media (max-width: 1023px) {
  .tk-hero { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 20px 18px; border-radius: 20px; }
  .tk-hero h1 { font-size: 22px; }
  .tk-hero__stat { flex-direction: row; justify-content: flex-start; gap: 14px; min-width: 0; text-align: left; padding-top: 14px; border-top: 1px solid var(--lv-line-d); }
  .tk-hero .lv-ring, .tk-hero .lv-ring svg { width: 60px !important; height: 60px !important; }
  .tk-hero .lv-ring b { font-size: 14px; }
}

/* ── Đầu trang sáng (trang đọc/luyện: nội dung chính là thẻ bên dưới, không cần thẻ teal to) ── */
.tk-head { margin: 4px 0 18px; }
.tk-head h1 { margin-top: 0; font-size: 28px; line-height: 1.2; font-weight: 800; letter-spacing: -.025em; color: var(--lv-ink); text-wrap: balance; }
.tk-head__chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tk-head__chips .lv-chip { height: 26px; padding: 0 10px; font-size: 12.5px; }
@media (max-width: 1023px) { .tk-head h1 { font-size: 23px; } }

/* ── Trang Đọc & Nghe (roadmap-passage.php): thẻ đọc theo chất liệu v3; thanh phát dính dưới thanh trên ── */
body:has(.tk-pass) { overflow: visible !important; }   /* body overflow-x:hidden giết sticky (html vẫn chặn tràn ngang) */
.tk-pass .rm-pass, .tk-pass .rm-ex__card { background: var(--lv-surface); border: 1px solid var(--lv-hair); border-radius: 20px; box-shadow: var(--lv-sh-1); }
.tk-pass .rm-pass { margin: 0 0 18px; }
.tk-pass .rm-pass__player { top: calc(72px + env(safe-area-inset-top, 0px)); border-color: var(--lv-hair); border-radius: 16px; box-shadow: var(--lv-sh-2); }
.tk-pass .rm-pass__tools { background: var(--lv-sunken); border-color: transparent; border-radius: 14px; }
@media (max-width: 1023px) {
  .tk-pass .rm-pass { padding: 16px 14px; border-radius: 18px; }
  .tk-pass .rm-pass__player { top: calc(64px + env(safe-area-inset-top, 0px)); }
}

.tk-head__lead { margin-top: 8px; max-width: 70ch; font-size: 14.5px; line-height: 1.6; color: var(--lv-muted); }

/* ── Luyện nói · viết (mini output — roadmap-practice.php, practice_kind=mini_output) ── */
body:has(.tk-mo) { overflow: visible !important; }   /* cho thẻ bên phải dính khi cuộn */
.mo-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 18px; align-items: start; }
.mo-main { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.mo-card { padding: 20px; }
.mo-card h2 { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 18px; font-weight: 750; letter-spacing: -.01em; color: var(--lv-ink); }
.mo-prompt { padding: 13px 15px; border-radius: 12px; background: var(--lv-sunken); color: var(--lv-text); font-weight: 600; line-height: 1.55; font-size: 15px; }
.mo-words { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.mo-word { display: inline-flex; align-items: center; height: 30px; padding: 0 11px; border-radius: 999px; background: var(--lv-wash); color: var(--lv-brand-deep); font-weight: 700; font-size: 13px; border: 1px solid transparent; transition: background var(--lv-dur) var(--lv-ease), color var(--lv-dur) var(--lv-ease), border-color var(--lv-dur) var(--lv-ease); }
.mo-word.is-used { background: var(--lv-brand-strong); color: var(--lv-on); }
.mo-word.is-missing { background: var(--color-warning-soft); color: var(--lv-warn-deep); border-color: color-mix(in srgb, var(--color-warning) 35%, transparent); }
.mo-area { width: 100%; min-height: 126px; margin-top: 14px; padding: 14px; resize: vertical; border-radius: 12px; border: 1.5px solid var(--lv-border); background: var(--lv-surface); color: var(--lv-ink); font: 500 15px/1.55 var(--lv-font); }
.mo-area:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--lv-focus); }
.mo-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.mo-live { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; color: var(--lv-muted); }
.mo-live strong { color: var(--lv-ink); }
.mo-result { display: none; margin-top: 14px; padding: 14px; border-radius: 14px; border: 1px solid var(--lv-hair); background: var(--lv-tint); }
.mo-result.is-show { display: block; }
.mo-result__top { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 12px; }
.mo-score { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 16px; color: var(--lv-muted); }
.mo-score b { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; font-size: 19px; background: var(--lv-brand-strong); color: var(--lv-on); }
.mo-score[data-tone="warn"] b, .mo-score[data-tone="danger"] b { background: color-mix(in srgb, var(--color-warning) 58%, black); }
.mo-pass { display: inline-flex; align-items: center; gap: 7px; height: 32px; padding: 0 12px; border-radius: 999px; font-size: 13px; font-weight: 700; }
.mo-pass.is-ok { background: var(--lv-wash); color: var(--lv-brand-deep); }
.mo-pass.is-warn { background: var(--color-warning-soft); color: var(--lv-warn-deep); }
.mo-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 12px; }
.mo-metric { padding: 10px 12px; border-radius: 12px; border: 1px solid var(--lv-hair); background: var(--lv-surface); }
.mo-metric span { display: block; font-size: 11.5px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--lv-muted); }
.mo-metric b { display: block; margin-top: 4px; font-size: 18px; color: var(--lv-ink); font-variant-numeric: tabular-nums; }
.mo-feedback-title { margin: 12px 0 6px; font-size: 12.5px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; color: var(--lv-brand-fg); }
.mo-feedback { margin: 0; padding-left: 18px; line-height: 1.65; color: var(--lv-text); }
.mo-fix { margin-top: 12px; padding: 12px 13px; border-radius: 12px; background: var(--lv-surface); border: 1px solid var(--lv-hair); line-height: 1.55; color: var(--lv-text); }
.mo-fix strong { color: var(--lv-ink); }
.mo-side { position: sticky; top: calc(84px + env(safe-area-inset-top, 0px)); }
.mo-side__h { margin-top: 22px; }
.mo-mini-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.mo-mini-list li { position: relative; padding-left: 18px; line-height: 1.5; color: var(--lv-text); }
.mo-mini-list li::before { content: ""; position: absolute; left: 3px; top: .6em; width: 7px; height: 7px; border-radius: 50%; background: var(--color-primary); }
.mo-situations { display: grid; gap: 8px; }
.mo-situation { padding: 11px 12px; border-radius: 12px; background: var(--lv-sunken); font-weight: 600; font-size: 14px; color: var(--lv-text); }
.mo-side-note { margin-top: 16px; padding: 12px; border-radius: 12px; background: var(--lv-wash); color: var(--lv-brand-deep); font-size: 13px; line-height: 1.5; font-weight: 600; }
@media (max-width: 1023px) {
  .mo-grid { grid-template-columns: minmax(0, 1fr); }
  .mo-side { position: static; }
  .mo-card { padding: 16px; }
  .mo-actions .lv-btn { flex: 1; }
}

/* ── Chép chính tả · Shadowing (roadmap-practice.php — trên nền roadmap-practice.css) ──────────── */
body:has(.tk-prac) { overflow: visible !important; }   /* cột danh sách câu dính khi cuộn */
.tk-prac { --tk-max: 1228px; }
.tk-prac .rp2 { max-width: var(--tk-max); padding: 24px 24px 72px; }
.tk-prac .rp2-side, .tk-prac .rp2-main, .tk-prac .rp2-nav { min-width: 0; }   /* dải câu cuộn ngang không được nới rộng trang */
/* Nút chính/nút phát theo màu thương hiệu đậm của v3 (bản cũ dùng teal nhạt) */
.tk-prac .rp2-btn--primary, .tk-prac .rp2-play, .tk-prac .rp2-chip.is-cur { background: var(--lv-brand-strong); border-color: var(--lv-brand-strong); color: var(--lv-on); }
.tk-prac .rp2-btn--primary:hover { background: color-mix(in srgb, var(--color-primary-hover) 82%, black); color: var(--lv-on); }
.tk-prac .rp2-btn--lg { height: 48px; padding: 0 26px; border-radius: 13px; font-size: 15px; }
.tk-prac .rp2-btn { border-radius: 11px; }
.tk-prac .rp2-side { top: calc(80px + env(safe-area-inset-top, 0px)); }
.tk-prac .rp2-card, .tk-prac .rp2-panel, .tk-prac .rp2-empty, .tk-prac .rp2-side { background: var(--lv-surface); border: 1px solid var(--lv-hair); border-radius: 20px; box-shadow: var(--lv-sh-1); }
.tk-prac .rp2-player { background: var(--lv-sunken); border-color: transparent; }
.tk-prac .rp2-modes { margin-top: 14px; }
.tk-prac .rp2-save { display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px; border-radius: 999px; background: var(--lv-sunken); font-size: 12.5px; font-weight: 600; }
.tk-prog { display: inline-flex; align-items: baseline; gap: 1px; font-size: 15px; font-weight: 700; color: var(--lv-ink); white-space: nowrap; }
.tk-prog small { margin-left: 6px; font-size: 12.5px; font-weight: 600; color: var(--lv-muted); }
@media (hover: none) { .tk-prac #rp2Tip, .tk-prac .rp2-nextbar .rp2-tip { display: none; } }   /* "Nhấn Enter…" vô nghĩa trên điện thoại */
@media (max-width: 1023px) {
  .tk-prac .rp2 { padding: 14px 16px 32px; }
  .tk-prac .rp2-grid { display: flex; flex-direction: column; align-items: stretch; gap: 12px; }   /* align-items:start gốc làm cột co theo nội dung ⇒ dải câu đẩy rộng trang */
  /* Danh sách câu: dải cuộn ngang một hàng thay cho lưới 18 ô đẩy bài xuống dưới màn */
  .tk-prac .rp2-side { position: static; padding: 10px 12px 12px; border-radius: 16px; }
  .tk-prac .rp2-side__head { margin-bottom: 8px; }
  .tk-prac .rp2-nav { display: flex; gap: 6px; max-height: none; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: none; }
  .tk-prac .rp2-nav::-webkit-scrollbar { display: none; }
  .tk-prac .rp2-chip { flex: none; width: 40px; height: 40px; aspect-ratio: auto; }
  .tk-prac .rp2-card { padding: 16px; border-radius: 18px; }
  .tk-prac .rp2-player { grid-template-columns: auto auto minmax(0, 1fr) auto auto; gap: 10px; }
  .tk-prac .rp2-time { justify-self: end; }
  .tk-prac .rp2-actions .rp2-btn { flex: 1; width: auto; }
  .tk-prac .rp2-actions .rp2-btn--primary { flex: 2; }
  .tk-prog small { display: none; }
}

/* ── Tuỳ chỉnh bài học (gập) ─────────────────────────────────────────────────────── */
.tk-opts { margin-bottom: 12px; border-radius: 14px; border: 1px solid var(--lv-hair); background: var(--lv-surface); }
.tk-opts > summary {
  list-style: none; display: flex; align-items: center; gap: 10px; min-height: 50px; padding: 0 14px; cursor: pointer;
  font-size: 14px; font-weight: 650; color: var(--lv-ink); border-radius: 14px;
}
.tk-opts > summary::-webkit-details-marker { display: none; }
.tk-opts > summary:focus-visible { outline: 2px solid var(--lv-brand-fg); outline-offset: 2px; }
.tk-opts > summary > .lv-i:first-child { color: var(--lv-brand-fg); }
.tk-opts > summary em { flex: 1; min-width: 0; font-style: normal; font-weight: 500; font-size: 13px; color: var(--lv-muted); text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tk-opts > summary .tk-chev { flex: none; color: var(--lv-faint); transition: transform var(--lv-dur) var(--lv-ease); }
.tk-opts[open] > summary .tk-chev { transform: rotate(180deg); }
.tk-opts__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 2px 14px 14px; }
.tk-field { display: flex; flex-direction: column; gap: 6px; min-width: 0; font-size: 12.5px; font-weight: 600; color: var(--lv-muted); }
.tk-field select {
  width: 100%; height: 42px; padding: 0 10px; border-radius: 11px; border: 1px solid var(--lv-border);
  background: var(--lv-surface); color: var(--lv-ink); font: 500 14px var(--lv-font); cursor: pointer;
}
.tk-field select:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--lv-focus); }
.tk-opts__hint { display: flex; align-items: flex-start; gap: 8px; margin: 0 14px 14px; padding: 10px 12px; border-radius: 10px; background: var(--color-warning-soft); color: var(--lv-warn-deep); font-size: 13px; font-weight: 600; }
.tk-opts__hint[hidden] { display: none; }
@media (max-width: 640px) {
  .tk-opts > summary em { display: none; }
  .tk-opts > summary .tk-chev { margin-left: auto; }
  .tk-opts__grid { grid-template-columns: minmax(0, 1fr); }
}

/* ── Lưới chế độ học ─────────────────────────────────────────────────────────────── */
.tk-modes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.tk-mode {
  position: relative; display: flex; flex-direction: column; gap: 3px; padding: 16px; border-radius: 16px; text-decoration: none;
  background: var(--lv-surface); border: 1px solid var(--lv-hair); box-shadow: var(--lv-sh-1);
  transition: border-color var(--lv-dur) var(--lv-ease), box-shadow var(--lv-dur) var(--lv-ease);
}
.tk-mode:hover { border-color: color-mix(in srgb, var(--color-primary) 40%, var(--lv-hair)); box-shadow: var(--lv-sh-2); text-decoration: none; }
.tk-mode:focus-visible { outline: 2px solid var(--lv-brand-fg); outline-offset: 2px; }
.tk-mode .lv-ic { margin-bottom: 9px; }
.tk-mode b { font-size: 14.5px; font-weight: 700; color: var(--lv-ink); }
/* Chip "còn N từ mới" — trang bộ từ (/kham-pha/<bộ>) dùng chung khuôn thẻ chế độ này từ 23/09/2026. */
.tk-mode__left { margin-top: 8px; align-self: flex-start; padding: 3px 9px; border-radius: 999px;
  background: var(--lv-wash); color: var(--lv-brand-deep); font-size: 12px; font-weight: 650; }
.tk-mode__left.is-done { background: var(--lv-sunken); color: var(--lv-muted); }
.tk-mode small { font-size: 12.5px; line-height: 1.45; color: var(--lv-muted); }
.tk-mode.is-first { border-color: color-mix(in srgb, var(--color-primary) 40%, var(--lv-hair)); background: linear-gradient(160deg, var(--lv-tint), var(--lv-surface) 60%); }
/* Trang bộ từ (/kham-pha/<bộ>) có thêm cột thư mục bên trái và danh sách từ bên phải nên khoảng giữa hẹp hơn
   trang bài lộ trình — để lưới tự chia theo bề rộng còn lại thay vì ép đúng 4 cột (chữ sẽ xuống 5 dòng). */
.sd-shell .tk-modes { grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); }
/* Cột giữa trang bộ từ chỉ ~390px (hai bên còn thư mục và danh sách từ) ⇒ đầu trang dùng luôn dáng HẸP
   y như trên điện thoại: xếp dọc, vòng tiến độ nằm ngang cạnh dòng chữ. */
.sd-shell .tk-hero { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 20px 18px; border-radius: 20px; }
.sd-shell .tk-hero h1 { font-size: 22px; }
.sd-shell .tk-hero__act { margin-top: 16px; }
.sd-shell .tk-hero__act .lv-btn { height: 48px; padding: 0 18px; font-size: 14.5px; }
/* Trên điện thoại hai nút chia đôi bề ngang (auto-fit ⇒ chỉ một nút thì nó chiếm trọn hàng).
   🚨 KHÔNG mượn tiện ích .tk-desk của trang bài lộ trình: trang đó có thanh ghim đáy thay thế,
   trang bộ từ thì không, nên gắn .tk-desk vào đây là mất luôn nút "Học ngay" trên điện thoại. */
@media (max-width: 1023px) {
  .sd-shell .tk-hero__act { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; }
  .sd-shell .tk-hero__act .lv-btn { width: 100%; }
}
.sd-shell .tk-hero__stat { flex-direction: row; justify-content: flex-start; align-items: center; gap: 14px;
  min-width: 0; text-align: left; padding-top: 14px; border-top: 1px solid var(--lv-line-d); }
@media (max-width: 1023px) {
  .tk-modes { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .tk-mode { padding: 13px; }
  .tk-mode .lv-ic { width: 34px; height: 34px; border-radius: 10px; margin-bottom: 7px; }
}

/* ── Danh sách từ ────────────────────────────────────────────────────────────────── */
.tk-count { display: inline-grid; place-items: center; min-width: 26px; height: 22px; margin-left: 8px; padding: 0 8px; border-radius: 999px; background: var(--lv-wash); color: var(--lv-brand-deep); font-size: 12px; font-weight: 700; vertical-align: 3px; font-variant-numeric: tabular-nums; }
.tk-search { position: relative; display: flex; align-items: center; }
.tk-search .lv-i { position: absolute; left: 12px; color: var(--lv-faint); pointer-events: none; }
.tk-search input {
  width: min(260px, 50vw); height: 38px; padding: 0 12px 0 36px; border-radius: 999px; border: 1px solid var(--lv-border);
  background: var(--lv-surface); color: var(--lv-ink); font: 500 14px var(--lv-font);
}
.tk-search input:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--lv-focus); }
.tk-words { overflow: hidden; }
.tk-word { display: grid; grid-template-columns: 28px 38px minmax(0, 1fr) 38px; gap: 12px; align-items: start; padding: 14px 18px; }
.tk-word + .tk-word { border-top: 1px solid var(--lv-hair); }
.tk-word[hidden] { display: none; }
.tk-word__n { width: 28px; height: 28px; margin-top: 5px; border-radius: 50%; display: grid; place-items: center; background: var(--lv-sunken); color: var(--lv-muted); font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.tk-word__au, .tk-word__ok {
  width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; padding: 0;
  border: 1px solid var(--lv-hair); background: var(--lv-surface); color: var(--lv-brand-fg);
  transition: background var(--lv-dur) var(--lv-ease), border-color var(--lv-dur) var(--lv-ease), color var(--lv-dur) var(--lv-ease);
}
.tk-word__au:hover { background: var(--lv-tint); border-color: color-mix(in srgb, var(--color-primary) 40%, var(--lv-hair)); }
.tk-word__au.is-playing { background: var(--lv-brand-strong); border-color: var(--lv-brand-strong); color: var(--lv-on); }
.tk-word__ok { color: var(--lv-faint); }
.tk-word__ok:hover { color: var(--lv-brand-fg); border-color: color-mix(in srgb, var(--color-primary) 40%, var(--lv-hair)); }
.tk-word__au:focus-visible, .tk-word__ok:focus-visible { outline: 2px solid var(--lv-brand-fg); outline-offset: 2px; }
.tk-word.is-known .tk-word__ok { background: var(--lv-brand-strong); border-color: var(--lv-brand-strong); color: var(--lv-on); }
.tk-word__ok:disabled { opacity: .55; cursor: default; }
.tk-word__h { display: flex; flex-wrap: wrap; align-items: baseline; gap: 3px 8px; }
.tk-word__h b { font-size: 16px; font-weight: 700; color: var(--lv-ink); }
.tk-word.is-known .tk-word__h b { color: var(--lv-muted); }
.tk-word__ipa { font-size: 13px; color: var(--lv-muted); }
.tk-word__h .lv-chip { height: 20px; padding: 0 7px; font-size: 11px; align-self: center; }
.tk-word__vi { margin-top: 3px; font-size: 14.5px; line-height: 1.5; color: var(--lv-text); }
.tk-word__ex { margin-top: 3px; font-size: 13px; line-height: 1.5; font-style: italic; color: var(--lv-muted); }
.tk-words__empty { padding: 30px 16px; text-align: center; font-size: 13.5px; color: var(--lv-muted); }
.tk-words__empty[hidden] { display: none; }
@media (max-width: 640px) {
  .tk-sec-words .lv-sec__head { flex-wrap: wrap; }
  .tk-search, .tk-search input { width: 100%; }
  .tk-word { grid-template-columns: 36px minmax(0, 1fr) 36px; gap: 10px; padding: 12px 14px; }
  .tk-word__n { display: none; }
  .tk-word__au, .tk-word__ok { width: 36px; height: 36px; }
}

@media (prefers-reduced-motion: reduce) {
  .tk-top__bar > i, .tk-mode, .tk-opts > summary .tk-chev, .tk-word__au, .tk-word__ok { transition: none; }
}