/* ═══════════════════════════════════════════════════════════════════════════
   assets/css/pinyin-pronunciation.css — trang /pinyin (public/pinyin.php + assets/js/pinyin-pronunciation.js)
   25/10/2026 dựng lại theo khung tab HSK (chủ dự án: "giao diện quá xấu, không hợp với style của các trang khác"):
   dải tối hsk_skill_hero + mục .hk-sec (public/assets/css/hsk-skill.css) + thẻ trắng viền mảnh như danh sách bài nghe.
   Biến --hk-* do .hh--sub công bố. Chỉ token var(--color-*) — KHÔNG hex.
   ═══════════════════════════════════════════════════════════════════════════ */

.pp-page .hk-sec { scroll-margin-top: calc(var(--nav-h, 64px) + var(--space-4)); }

/* Thẻ nền chung của trang */
.pp-card {
    background: var(--hk-surface);
    border: 1px solid var(--hk-border);
    border-radius: 16px;
    box-shadow: 0 1px 2px color-mix(in srgb, var(--color-ink) 5%, transparent);
}

/* Ô tìm cạnh tiêu đề mục */
.pp-search {
    position: relative;
    flex: 0 1 260px;
    min-width: 0;
}
.pp-search i {
    position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
    font-size: 13px; color: var(--hk-muted); pointer-events: none;
}
.pp-search input {
    width: 100%; height: 38px; padding: 0 12px 0 34px;
    border: 1px solid var(--hk-border); border-radius: var(--radius-pill);
    background: var(--hk-surface); color: var(--hk-ink);
    font: inherit; font-size: 13.5px;
}
.pp-search input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 16%, transparent); }

/* Bố cục: bảng rộng + khung nghe dính bên phải */
.pp-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: var(--space-5);
    align-items: start;
}

/* ── Bảng ─────────────────────────────────────────────────────────────── */
.pp-table-card { min-width: 0; padding: 14px; }

/* Tab nhóm vận mẫu = điều khiển phân đoạn (nền chìm, tab đang chọn nổi trắng) */
/* 27/10/2026 (chủ dự án): 5 tab chia ĐỀU, kéo hết bề ngang khung bảng (trước co theo chữ, lệch trái) */
.pp-groups {
    display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); width: 100%; gap: 4px;
    padding: 4px; margin-bottom: 12px;
    border-radius: 12px; background: var(--hk-sunken);
}
.pp-group {
    height: 34px; padding: 0 14px;
    border: 0; border-radius: 9px; background: transparent;
    color: var(--hk-muted); font: inherit; font-size: 13px; font-weight: var(--fw-bold);
    cursor: pointer; transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.pp-group:hover { color: var(--hk-ink); }
.pp-group.is-active {
    background: var(--hk-surface); color: var(--hk-deep);
    box-shadow: 0 1px 3px color-mix(in srgb, var(--color-ink) 14%, transparent);
}
.pp-group:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

.pp-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--hk-border);
    border-radius: 12px;
}
.pp-table {
    width: 100%;
    border-collapse: separate; border-spacing: 0;
    font-variant-numeric: tabular-nums;
}
.pp-table th,
.pp-table td {
    padding: 2px;
    border-bottom: 1px solid var(--hk-border);
    border-right: 1px solid color-mix(in srgb, var(--hk-border) 60%, transparent);
    text-align: center;
    background: var(--hk-surface);
}
.pp-table tr > :last-child { border-right: 0; }
.pp-table tbody tr:last-child > * { border-bottom: 0; }

/* Hàng tiêu đề (vận mẫu) + cột đầu (thanh mẫu): KHÔNG phát âm */
.pp-table thead th {
    height: 38px;
    background: var(--hk-sunken);
    color: var(--hk-deep);
    font-size: 13px; font-weight: var(--fw-extrabold);
    white-space: nowrap;
}
.pp-table th:first-child,
.pp-table td:first-child {
    position: sticky; left: 0; z-index: 1;
    width: 48px; min-width: 48px;
}
.pp-table thead th:first-child { z-index: 2; }
.pp-table .pp-initial {
    background: var(--hk-sunken);
    color: var(--hk-ink);
    font-size: 14px; font-weight: var(--fw-extrabold);
    border-right: 1px solid var(--hk-border);
}
.pp-table tbody tr:hover > td { background: color-mix(in srgb, var(--color-primary) 3%, var(--hk-surface)); }
.pp-table tbody tr:hover > .pp-initial { background: var(--hk-tint); color: var(--hk-deep); }

/* Ô âm tiết */
.pp-syl {
    display: flex; align-items: center; justify-content: center;
    width: 100%; min-width: 0; height: 34px; padding: 0 3px;
    border: 1px solid transparent; border-radius: 8px;
    background: transparent; color: var(--hk-ink);
    font: inherit; font-size: 13.5px; font-weight: var(--fw-semibold); white-space: nowrap;
    cursor: pointer;
    transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
button.pp-syl:hover { background: var(--hk-tint); border-color: color-mix(in srgb, var(--color-primary) 22%, transparent); color: var(--hk-deep); }
button.pp-syl:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.pp-syl.is-selected,
button.pp-syl.is-selected:hover {
    background: var(--color-primary); border-color: var(--color-primary); color: var(--color-on-dark);
    box-shadow: 0 6px 14px -8px color-mix(in srgb, var(--color-primary-deep) 70%, transparent);
}
.pp-syl.is-off { color: color-mix(in srgb, var(--hk-muted) 55%, transparent); font-weight: var(--fw-medium); cursor: default; }
.pp-syl.is-match { border-color: var(--color-primary); background: var(--hk-tint); color: var(--hk-deep); }
.pp-syl.is-dim { opacity: .3; }

/* Vạch ngăn: giữa các nhóm vận mẫu ở tab "Cả bảng" + trước hàng w, y (như bảng gốc chủ dự án gửi 25/10/2026) */
.pp-table .is-gstart { border-left: 2px solid color-mix(in srgb, var(--color-primary) 30%, var(--hk-border)); }
.pp-table tbody tr.is-wy > * { border-top: 2px solid color-mix(in srgb, var(--color-primary) 30%, var(--hk-border)); }

/* ── Khung nghe ───────────────────────────────────────────────────────── */
.pp-player {
    position: sticky;
    top: calc(var(--nav-h, 64px) + var(--space-4));
    padding: 18px;
}
.pp-player__head { padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px solid var(--hk-border); }
.pp-player__k {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 11px; font-weight: var(--fw-extrabold); letter-spacing: .06em; text-transform: uppercase; color: var(--hk-strong);
}
.pp-player__k::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); }
.pp-syllable {
    margin: 4px 0 6px;
    font-size: 40px; line-height: 1.05; font-weight: var(--fw-extrabold); letter-spacing: -.02em;
    color: var(--hk-ink);
}
.pp-player__phonetic { margin: 0; font-size: 13px; line-height: 1.55; color: var(--hk-muted); }

.pp-tone-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.pp-tone {
    position: relative;
    display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "lab zh" "py zh" "hint play";
    align-items: center; gap: 2px 6px;
    min-height: 92px; padding: 10px 11px;
    border: 1px solid var(--hk-border); border-radius: 12px;
    background: var(--hk-surface); color: var(--hk-ink);
    font: inherit; text-align: left;
    cursor: pointer;
    transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
button.pp-tone:hover { border-color: color-mix(in srgb, var(--color-primary) 45%, transparent); background: var(--hk-tint); }
button.pp-tone:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.pp-tone__label { grid-area: lab; font-size: 11px; font-weight: var(--fw-bold); color: var(--hk-muted); }
.pp-tone__py { grid-area: py; font-size: 22px; font-weight: var(--fw-extrabold); line-height: 1.15; }
.pp-tone__zh { grid-area: zh; align-self: start; font-size: 24px; font-weight: var(--fw-semibold); color: var(--hk-strong); line-height: 1; }
.pp-tone__hint { grid-area: hint; font-size: 11.5px; color: var(--hk-muted); }
.pp-tone__play {
    grid-area: play; justify-self: end;
    display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
    background: var(--hk-tint); color: var(--hk-strong); font-size: 12px;
}
.pp-tone.is-playing { border-color: var(--color-primary); background: var(--hk-wash); }
.pp-tone.is-playing .pp-tone__play { background: var(--color-primary); color: var(--color-on-dark); }
.pp-tone.is-none { cursor: default; background: var(--hk-sunken); border-style: dashed; }
.pp-tone.is-none .pp-tone__py { color: var(--hk-muted); }

.pp-player__controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: 14px; }
.pp-rate { display: inline-flex; gap: 2px; padding: 3px; border-radius: 10px; background: var(--hk-sunken); }
.pp-rate__button {
    height: 30px; padding: 0 10px; border: 0; border-radius: 8px; background: transparent;
    color: var(--hk-muted); font: inherit; font-size: 12.5px; font-weight: var(--fw-bold); white-space: nowrap; cursor: pointer;
}
.pp-rate__button.is-active { background: var(--hk-surface); color: var(--hk-deep); box-shadow: 0 1px 3px color-mix(in srgb, var(--color-ink) 14%, transparent); }
.pp-rate__button:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.pp-play-all { flex: 1; justify-content: center; white-space: nowrap; }
.pp-play-all.is-playing { background: var(--color-primary-deep); }
.pp-player__note { display: flex; gap: 7px; margin: 12px 0 0; font-size: 12.5px; line-height: 1.5; color: var(--hk-muted); }
.pp-player__note i { margin-top: 3px; color: var(--hk-strong); }

/* ── Ba bước luyện ────────────────────────────────────────────────────── */
.pp-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.pp-step { display: flex; gap: 12px; padding: 14px 16px; }
.pp-step__ic {
    flex: none; display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
    background: var(--hk-tint); color: var(--hk-strong); font-size: 15px;
}
.pp-step b { font-size: 14px; font-weight: var(--fw-extrabold); color: var(--hk-ink); }
.pp-step p { margin: 3px 0 0; font-size: 13px; line-height: 1.55; color: var(--hk-muted); }

.pp-attribution {
    display: flex; gap: 8px; align-items: flex-start;
    margin: var(--space-6) 0 0; font-size: 12px; line-height: 1.5; color: var(--hk-muted);
}
.pp-attribution i { margin-top: 2px; }

/* ── Màn hẹp ──────────────────────────────────────────────────────────── */
@media (max-width: 1199px) {
    .pp-workspace { grid-template-columns: minmax(0, 1fr); }
    .pp-player { position: static; }
    .pp-tone-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
    .pp-steps { grid-template-columns: minmax(0, 1fr); }
    .pp-tone-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
    .hh--sub.pp-page .hk-sec__h { flex-direction: column; align-items: stretch; }
    .pp-search { flex-basis: auto; width: 100%; }
    .pp-table-card { padding: 10px; }
    .pp-groups { grid-auto-flow: row; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .pp-groups > :last-child:nth-child(odd) { grid-column: 1 / -1; }
    .pp-syl { min-width: 44px; height: 32px; font-size: 13px; }
    .pp-table th:first-child, .pp-table td:first-child { width: 40px; min-width: 40px; }
    .pp-syllable { font-size: 34px; }
    .pp-player__controls { flex-direction: column; align-items: stretch; }
    .pp-rate { justify-content: center; }
    .pp-rate__button { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
    .pp-group, .pp-syl, .pp-tone { transition: none; }
}

/* Âm thanh đang tắt (25/10/2026): thẻ thanh chỉ để xem — không con trỏ tay, không hiệu ứng bấm */
.pp-tone.is-silent { cursor: default; min-height: 84px; }
.pp-tone.is-silent.is-none { opacity: .6; }