/* Nghe chép chính tả IELTS — /ielts/nghe-chep/ (5/9/2026)
   Bám design system của app IELTS (style.css: navy #1C355F · hồng #ED0E57 · góc 6px · kẻ 1px).
   Không emoji trong tiêu đề/nút (memory quy-tac-icon-tren-web). */
.nc-wrap { max-width:1080px; margin:0 auto; padding:26px 20px 60px; }
.nc-lead { color:var(--muted); font-size:15px; margin:6px 0 16px; max-width:760px; }
.nc-lead b { color:var(--navy); }
/* Hàng "hai cách học" giống /ielts/luyen-tap để khu này trông như một tab của khu 4 skills */
.nc-che-do { display:flex; gap:8px; flex-wrap:wrap; margin:14px 0 18px; }
.nc-che-do a { border:1px solid var(--line-2); border-radius:4px; padding:7px 14px; font-size:13.5px;
  font-weight:700; color:var(--navy); text-decoration:none; background:#fff; }
.nc-che-do a.on { background:var(--navy); border-color:var(--navy); color:#fff; }

/* ===== Chọn level ===== */
.nc-levels { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin:18px 0 22px; }
.nc-level { text-align:left; font:inherit; background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:16px 18px; cursor:pointer; position:relative; transition:border-color .15s; }
.nc-level:hover { border-color:var(--navy-2); }
.nc-level.on { border-color:var(--pink); box-shadow:inset 0 0 0 1px var(--pink); }
.nc-level .ten { font-size:17px; font-weight:800; color:var(--navy); display:flex; align-items:center; gap:10px; }
.nc-level .ten small { font-weight:700; font-size:11.5px; color:var(--muted); text-transform:uppercase; letter-spacing:.6px; }
.nc-level .mo { color:var(--muted); font-size:13px; margin-top:6px; line-height:1.5; }
.nc-level .so { margin-top:10px; font-size:12.5px; color:#374151; display:flex; gap:12px; flex-wrap:wrap; }
.nc-level .so b { color:var(--navy); }
.nc-level .thanh { height:3px; background:var(--line-2); border-radius:2px; margin-top:12px; overflow:hidden; }
.nc-level .thanh i { display:block; height:100%; background:var(--navy); width:0; }
.nc-level.on .thanh { background:#F9A8C4; }
.nc-level.on .thanh i { background:var(--pink); }

/* Luật của level đang chọn */
.nc-luat { display:flex; gap:10px; flex-wrap:wrap; margin:0 0 18px; }
.nc-luat span { background:#fff; border:1px solid var(--line); border-radius:4px; padding:5px 11px; font-size:12.5px; color:#374151; }
.nc-luat span b { color:var(--navy); }

/* ===== Danh sách bài ===== */
.nc-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:14px; }
.nc-card { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:16px 18px; display:flex; flex-direction:column; gap:8px; }
.nc-card .tags { display:flex; gap:6px; flex-wrap:wrap; font-size:11.5px; font-weight:700; }
.nc-card .tags span { background:#EEF2F7; color:#374151; border-radius:4px; padding:3px 8px; }
.nc-card .tags span.lv { background:var(--pink-soft); color:var(--pink); }
.nc-card h3 { font-size:16px; color:var(--navy); line-height:1.35; }
.nc-card h3 small { display:block; font-weight:400; color:var(--muted); font-size:13px; margin-top:2px; }
.nc-card p { color:var(--muted); font-size:13.5px; line-height:1.5; flex:1; }
.nc-card .meta { font-size:12.5px; color:#374151; display:flex; gap:10px; flex-wrap:wrap; }
.nc-card .meta b { color:var(--navy); }
.nc-card .tien { display:flex; align-items:center; gap:10px; font-size:12.5px; color:var(--muted); }
.nc-card .tien .bar { flex:1; height:5px; background:#EEF2F7; border-radius:3px; overflow:hidden; }
.nc-card .tien .bar i { display:block; height:100%; background:var(--navy); }
.nc-card .tien.xong .bar i { background:var(--ok); }
.nc-card .acts { display:flex; gap:8px; margin-top:4px; }
.nc-card .acts .btn { flex:1; padding:9px 12px; font-size:13.5px; }

/* Hộp "cách học" */
.nc-cach { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:18px 20px; margin:26px 0 0; }
.nc-cach h2 { font-size:17px; color:var(--navy); margin-bottom:10px; }
.nc-cach ol { padding-left:20px; color:#374151; font-size:14px; line-height:1.65; }
.nc-cach ol li { margin-bottom:4px; }
.nc-cach table { width:100%; border-collapse:collapse; font-size:13.5px; margin-top:12px; }
.nc-cach th, .nc-cach td { border:1px solid var(--line); padding:7px 10px; text-align:left; vertical-align:top; }
.nc-cach th { background:#F3F6FB; color:var(--navy); font-size:12.5px; }
.nc-cach .cuon { overflow-x:auto; }

/* ===== Trang làm bài ===== */
.nc-top { display:flex; justify-content:space-between; gap:16px; align-items:flex-start; flex-wrap:wrap; margin-bottom:14px; }
.nc-top h1 { font-size:clamp(20px,2.6vw,26px); color:var(--navy); line-height:1.3; }
.nc-top h1 small { display:block; font-size:14px; font-weight:400; color:var(--muted); margin-top:3px; }
.nc-top .thong-tin { display:flex; gap:8px; flex-wrap:wrap; font-size:12.5px; }
.nc-top .thong-tin span { background:#fff; border:1px solid var(--line); border-radius:4px; padding:4px 9px; color:#374151; }
.nc-top .thong-tin span.lv { background:var(--pink-soft); border-color:#F9A8C4; color:var(--pink); font-weight:700; }

.nc-man { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:20px 22px; }
.nc-man h2 { color:var(--navy); font-size:18px; margin-bottom:8px; }
.nc-man p { color:#374151; font-size:14.5px; line-height:1.6; }
.nc-man .hai { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:16px; }
.nc-chon { border:1px solid var(--line-2); border-radius:var(--radius); padding:16px; background:#fff; cursor:pointer; font:inherit; text-align:left; }
.nc-chon:hover { border-color:var(--navy); background:#F3F6FB; }
.nc-chon b { display:block; color:var(--navy); font-size:15px; margin-bottom:4px; }
.nc-chon span { color:var(--muted); font-size:13px; line-height:1.5; }
.nc-nguoi { display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; }
.nc-nguoi span { font-size:12.5px; background:#F3F6FB; border-radius:4px; padding:4px 9px; color:#374151; }
.nc-nguoi span b { color:var(--navy); }

/* Thanh tiến độ trên cùng khi đang chép */
.nc-tien-do { display:flex; align-items:center; gap:12px; font-size:13px; color:#374151; margin-bottom:10px; flex-wrap:wrap; }
.nc-tien-do .bar { flex:1; min-width:140px; height:6px; background:#EEF2F7; border-radius:3px; overflow:hidden; }
.nc-tien-do .bar i { display:block; height:100%; background:var(--navy); transition:width .2s; }
.nc-tien-do b { color:var(--navy); }

/* Khung một câu */
.nc-cau { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:18px 20px; }
.nc-ai { display:flex; align-items:center; gap:10px; margin-bottom:12px; font-size:13px; color:var(--muted); }
.nc-ai b { color:var(--navy); font-size:14px; }
.nc-ai .giong { background:#F3F6FB; border-radius:4px; padding:2px 8px; font-size:11.5px; }
.nc-dieu-khien { display:flex; gap:8px; flex-wrap:wrap; align-items:center; margin-bottom:12px; }
.nc-dieu-khien .btn { padding:9px 14px; font-size:13.5px; }
.nc-dieu-khien .btn[disabled] { opacity:.45; cursor:not-allowed; }
.nc-dieu-khien .dem { font-size:12.5px; color:var(--muted); }
.nc-dieu-khien .dem b { color:var(--navy); }
.nc-dieu-khien label { font-size:12.5px; color:#374151; display:flex; align-items:center; gap:5px; cursor:pointer; margin-left:auto; }
.nc-dieu-khien label input { accent-color:var(--pink); }
/* Vạch sóng giả — báo đang phát, bằng CSS thuần */
.nc-song { display:inline-flex; gap:2px; align-items:flex-end; height:16px; width:26px; }
.nc-song i { width:3px; background:var(--pink); height:30%; border-radius:1px; }
.nc-song.on i { animation:nc-song .8s ease-in-out infinite; }
.nc-song i:nth-child(2) { animation-delay:.15s; } .nc-song i:nth-child(3) { animation-delay:.3s; }
.nc-song i:nth-child(4) { animation-delay:.45s; } .nc-song i:nth-child(5) { animation-delay:.6s; }
@keyframes nc-song { 0%,100% { height:30%; } 50% { height:100%; } }

.nc-go { width:100%; min-height:88px; font:inherit; font-size:16px; line-height:1.55; padding:12px 14px; border:1.5px solid var(--line-2);
  border-radius:var(--radius); resize:vertical; color:var(--text); }
.nc-go:focus { outline:none; border-color:var(--navy); box-shadow:0 0 0 3px rgba(28,53,95,.12); }
.nc-go[readonly] { background:#F9FAFB; }
/* Dãy ô trống theo từng từ (HD 5/9): nhìn là biết câu dài bao nhiêu, gõ tới đâu */
.nc-o-trong { display:flex; flex-wrap:wrap; gap:6px 8px; margin:0 0 8px; }
.nc-o-trong span { display:inline-block; height:14px; border-bottom:2px solid var(--line-2); }
.nc-goi-y .so-tu { font-size:14px; color:var(--navy); }
.nc-goi-y .so-tu b { font-size:16px; }
.nc-goi-y { margin-top:8px; font-size:13px; color:var(--muted); display:flex; gap:12px; flex-wrap:wrap; align-items:center; }
.nc-goi-y .chu { font-family:ui-monospace,Menlo,monospace; letter-spacing:1px; color:var(--navy); }
.nc-hanh-dong { display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; align-items:center; }
.nc-hanh-dong .phim { margin-left:auto; font-size:12px; color:var(--muted); }
.nc-hanh-dong .phim kbd { border:1px solid var(--line-2); border-radius:3px; padding:1px 5px; font-size:11px; background:#fff; }

/* Kết quả so từng từ */
.nc-so { margin-top:14px; padding-top:14px; border-top:1px solid var(--line); }
.nc-so .diem { font-size:13.5px; color:#374151; margin-bottom:8px; }
.nc-so .diem b { color:var(--navy); }
.nc-so .diem b.tot { color:var(--ok); } .nc-so .diem b.te { color:#B91C1C; }
.nc-dap { font-size:16.5px; line-height:1.9; }
.nc-dap .ok { color:var(--ok); }
.nc-dap .sai { color:#B91C1C; text-decoration:line-through; text-decoration-thickness:1.5px; }
.nc-dap .dung { color:#B91C1C; font-weight:700; background:#FEE2E2; border-radius:3px; padding:0 4px; }
.nc-dap .thieu { color:#B45309; font-weight:700; background:var(--warnbg); border-radius:3px; padding:0 4px; }
.nc-dap .thua { color:var(--muted); text-decoration:line-through; }
.nc-dap .goc { margin-top:8px; color:var(--navy); font-weight:600; font-size:15px; }
.nc-dap .goc small { color:var(--muted); font-weight:400; display:block; font-size:12.5px; margin-bottom:2px; }
.nc-chu-thich { display:flex; gap:12px; flex-wrap:wrap; font-size:12px; color:var(--muted); margin-top:8px; }

/* Danh sách câu đã làm (cột phải trên desktop) */
.nc-2cot { display:grid; grid-template-columns:1fr 300px; gap:16px; align-items:start; }
.nc-lich-su { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:12px 14px; max-height:70vh; overflow:auto; position:sticky; top:130px; }
.nc-lich-su h4 { font-size:12.5px; text-transform:uppercase; letter-spacing:.6px; color:var(--navy); margin-bottom:8px; display:flex; justify-content:space-between; }
.nc-lich-su .d { display:flex; gap:8px; font-size:12.5px; padding:5px 4px; border-bottom:1px solid #F3F4F6; cursor:pointer; }
.nc-lich-su .d:hover { background:#F9FAFB; }
.nc-lich-su .d .n { color:var(--muted); width:26px; flex:none; }
.nc-lich-su .d .t { flex:1; color:#374151; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.nc-lich-su .d .p { font-weight:700; width:38px; text-align:right; }
.nc-lich-su .d .p.tot { color:var(--ok); } .nc-lich-su .d .p.te { color:#B91C1C; } .nc-lich-su .d .p.vua { color:var(--warn); }
.nc-lich-su .d.dang { background:var(--pink-soft); }

/* Màn kết quả */
.nc-kq-so { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; margin:14px 0; }
.nc-kq-so div { background:#F3F6FB; border-radius:var(--radius); padding:12px 14px; }
.nc-kq-so b { display:block; font-size:24px; color:var(--navy); }
.nc-kq-so span { font-size:12.5px; color:var(--muted); }
.nc-kq-h { font-size:15px; color:var(--navy); margin:18px 0 8px; }
.nc-yeu { border:1px solid var(--line); border-radius:var(--radius); padding:10px 12px; margin-bottom:8px; font-size:14.5px; }
.nc-yeu .n { font-size:12px; color:var(--muted); margin-bottom:3px; display:flex; justify-content:space-between; }
.nc-tu-kho { width:100%; border-collapse:collapse; font-size:13.5px; }
.nc-tu-kho td { border-bottom:1px solid var(--line); padding:6px 8px; vertical-align:top; }
.nc-tu-kho td:first-child { font-weight:700; color:var(--navy); width:38%; }

/* Nghe cả bài có bản ghi chạy theo */
.nc-ban-ghi { margin-top:14px; font-size:15.5px; line-height:1.9; max-height:60vh; overflow:auto; border:1px solid var(--line); border-radius:var(--radius); padding:14px 16px; background:#fff; }
.nc-ban-ghi .c { padding:1px 4px; border-radius:3px; cursor:pointer; }
.nc-ban-ghi .c:hover { background:#F3F6FB; }
.nc-ban-ghi .c.dang { background:#FDE68A; }
.nc-ban-ghi .ai { display:block; margin-top:8px; font-size:12px; color:var(--muted); font-weight:700; text-transform:uppercase; letter-spacing:.5px; }
.nc-ban-ghi.an .c { color:transparent !important; background:#EEF2F7; user-select:none; }
.nc-thanh-phat { display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-top:12px; }
.nc-thanh-phat audio { flex:1; min-width:220px; height:36px; }

.nc-loi { background:var(--warnbg); border:1px solid #FDE68A; border-radius:var(--radius); padding:12px 14px; color:#78350F; font-size:14px; }

@media (max-width:860px) {
  .nc-levels { grid-template-columns:1fr; }
  .nc-2cot { grid-template-columns:1fr; }
  .nc-lich-su { position:static; max-height:40vh; }
  .nc-man .hai { grid-template-columns:1fr; }
}
@media (max-width:600px) {
  .nc-wrap { padding:18px 14px 90px; }
  .nc-cau { padding:14px; }
  .nc-go { font-size:16px; }               /* 16px trở lên: iOS không tự zoom khi chạm vào ô */
  .nc-dieu-khien label { margin-left:0; width:100%; }
  .nc-hanh-dong .phim { display:none; }
  .nc-card .acts { flex-direction:column; }
}

/* (HD 5/9) Điền từ khuyết + nút đổi chế độ */
.nc-che-do-nho { margin-left:auto; display:inline-flex; border:1px solid var(--line-2); border-radius:4px; overflow:hidden; }
.nc-che-do-nho button { font:inherit; font-size:12px; font-weight:700; padding:4px 10px; border:0; background:#fff; color:var(--navy); cursor:pointer; }
.nc-che-do-nho button.on { background:var(--navy); color:#fff; }
.nc-khuyet { font-size:16.5px; line-height:2.2; padding:12px 14px; border:1.5px solid var(--line-2); border-radius:var(--radius); background:#fff; }
.nc-khuyet .nc-o { font:inherit; font-size:16px; border:0; border-bottom:2px solid var(--navy); background:#F3F6FB; padding:1px 6px; margin:0 1px; border-radius:3px 3px 0 0; min-width:3ch; }
.nc-khuyet .nc-o:focus { outline:none; background:var(--pink-soft); border-bottom-color:var(--pink); }
.nc-khuyet .nc-o[readonly] { background:#F9FAFB; }
@media (max-width:600px) { .nc-che-do-nho { margin-left:0; width:100%; } .nc-che-do-nho button { flex:1; } .nc-khuyet .nc-o { font-size:16px; } }