/* "Góc khởi động" phòng đợi — ôn tập nhẹ nhàng trong lúc chờ gặp giáo viên. Tông trầm ấm, thanh thoát,
   dùng chung phong cách với Cổng học viên. Prefix .wu- để không đụng CSS khác. */
.wu-panel{
  --wu-paper:#faf3e2; --wu-paper2:#f2e7cf; --wu-ink:#3a3320; --wu-soft:#8a7f63; --wu-line:#e2d4b3;
  --wu-olive:#55632f; --wu-olivedk:#3c4720; --wu-brass:#a9781f; --wu-brasslt:#c99a3a; --wu-ox:#7c2d26;
  margin-top:16px; border:1px solid var(--wu-line); border-radius:20px; overflow:hidden;
  background:linear-gradient(180deg,var(--wu-paper),var(--wu-paper2)); box-shadow:0 10px 26px -16px rgba(60,40,10,.5);
  font-family:inherit; color:var(--wu-ink);
}
.wu-head{display:flex;align-items:center;gap:9px;padding:13px 15px 10px}
.wu-head .wu-emoji{font-size:1.25rem}
.wu-head b{font-family:"Iowan Old Style",Palatino,Cambria, Georgia,serif;font-size:1rem;color:var(--wu-olivedk)}
.wu-head .wu-note{font-size:.74rem;color:var(--wu-soft);margin-top:1px}
.wu-body{padding:4px 15px 16px}

.wu-near{margin:0 15px 10px;background:#f6ead0;border:1px solid var(--wu-line);border-radius:12px;padding:8px 12px;font-size:.82rem;color:var(--wu-brass);font-weight:700;display:none}
.wu-near.on{display:block}

/* nút chọn ở màn giới thiệu */
.wu-choices{display:flex;flex-direction:column;gap:9px}
.wu-choice{display:flex;align-items:center;gap:12px;border:1px solid var(--wu-line);background:var(--wu-paper);border-radius:14px;padding:12px 14px;cursor:pointer;transition:.15s;text-align:left;font-family:inherit;color:inherit}
.wu-choice:hover{border-color:var(--wu-brasslt);transform:translateY(-1px)}
.wu-choice .ic{flex:0 0 auto;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:1.25rem;background:#e9e5cc}
.wu-choice.companion .ic{background:#f0e2c0}
.wu-choice.versus .ic{background:#e6dcc0}
/* 2 Đội Thi Đấu — 2 làn đua */
.wu-vtrack{display:flex;flex-direction:column;gap:8px;margin:4px 0 10px}
.wu-vlane .wu-vlane-nm{font-size:.76rem;font-weight:800;color:var(--wu-soft);margin:0 2px 3px}
.wu-vlane.mine .wu-vlane-nm{color:var(--wu-olive)}
.wu-vlane .wu-track{height:52px;margin:0}
.wu-choice b{font-size:.95rem}
.wu-choice span{display:block;font-size:.78rem;color:var(--wu-soft);margin-top:1px}
.wu-optout{margin-top:10px;text-align:center;font-size:.76rem;color:var(--wu-soft)}

.wu-btn{border:none;border-radius:12px;padding:11px 16px;font-weight:800;font-size:.92rem;cursor:pointer;font-family:inherit}
.wu-btn.primary{background:linear-gradient(180deg,var(--wu-brasslt),var(--wu-brass));color:#3a2a08;box-shadow:0 7px 16px -8px rgba(169,120,31,.75)}
.wu-btn.soft{background:#eae4cb;color:var(--wu-olivedk)}
.wu-btn.ghost{background:transparent;color:var(--wu-soft);font-weight:700;padding:8px 12px}
.wu-btn:active{transform:translateY(1px)}
.wu-btn.block{display:block;width:100%}
.wu-btnrow{display:flex;gap:8px;margin-top:12px}

/* đang tìm bạn */
.wu-wait{text-align:center;padding:14px 6px}
.wu-spin{width:44px;height:44px;margin:0 auto 12px;border-radius:50%;border:4px solid #e6dcbf;border-top-color:var(--wu-brass);animation:wuSpin 1s linear infinite}
@keyframes wuSpin{to{transform:rotate(360deg)}}
.wu-wait .t{font-size:.95rem;font-weight:700}
.wu-wait .s{font-size:.8rem;color:var(--wu-soft);margin-top:3px}

/* hướng dẫn + chọn linh vật */
.wu-guide{background:var(--wu-paper);border:1px solid var(--wu-line);border-radius:14px;padding:12px 14px;margin-bottom:12px}
.wu-guide h4{margin:0 0 7px;font-size:.9rem;color:var(--wu-olivedk);font-family:"Iowan Old Style",Palatino,serif}
.wu-guide ol{margin:0;padding-left:18px;font-size:.83rem;color:var(--wu-ink);line-height:1.6}
.wu-guide .with{margin-top:8px;font-size:.82rem;color:var(--wu-soft)}
.wu-guide .with b{color:var(--wu-olive)}
.wu-mascots-h{font-size:.82rem;font-weight:800;color:var(--wu-soft);margin:0 0 8px;text-transform:uppercase;letter-spacing:.05em}
.wu-mascots{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.wu-mascot{border:1px solid var(--wu-line);background:var(--wu-paper);border-radius:14px;padding:10px 4px;text-align:center;cursor:pointer;transition:.15s}

/* 4/9/2026 — bọc @media (hover: hover) để ĐIỆN THOẠI không dính màu sau khi chạm
   (iOS/Android giữ trạng thái hover ở chỗ vừa chạm cho tới khi chạm chỗ khác), và thêm
   luật :active song sinh để lúc đè ngón tay vẫn có phản hồi. Màu GIỮ NGUYÊN như cũ.
   Gốc của việc này: ghi chú ⚠️ trong public/style.css. */
@media (hover: hover) {
  .wu-mascot:hover{border-color:var(--wu-brass);transform:translateY(-2px);background:#f6ead0}
}
.wu-mascot:active {border-color:var(--wu-brass);transform:translateY(-2px);background:#f6ead0}
.wu-mascot .em{font-size:1.7rem;line-height:1}
.wu-mascot .nm{font-size:.66rem;color:var(--wu-soft);margin-top:3px;font-weight:700}

/* hành trình cùng về đích */
.wu-track{position:relative;height:66px;margin:6px 0 4px;border-radius:16px;overflow:hidden;
  background:linear-gradient(180deg,#eef2df,#e3ecd0);border:1px solid var(--wu-line)}
.wu-track .lane{position:absolute;left:10px;right:44px;top:50%;height:4px;transform:translateY(-50%);
  background:repeating-linear-gradient(90deg,#c9d3a6 0 10px,transparent 10px 20px);border-radius:2px}
.wu-track .goalflag{position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:1.5rem}
.wu-track .runner{position:absolute;top:50%;transform:translate(-50%,-50%);font-size:1.9rem;transition:left .6s cubic-bezier(.25,.9,.35,1);filter:drop-shadow(0 3px 3px rgba(0,0,0,.18))}
.wu-track .dust{position:absolute;top:60%;font-size:.8rem;opacity:0;transition:.3s}
.wu-progress-txt{display:flex;justify-content:space-between;font-size:.76rem;color:var(--wu-soft);margin:2px 2px 10px}
.wu-progress-txt b{color:var(--wu-olive)}

/* hai bạn đồng hành */
.wu-mates{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.wu-mate{display:flex;align-items:center;gap:7px;background:var(--wu-paper);border:1px solid var(--wu-line);border-radius:999px;padding:4px 11px 4px 4px}
.wu-mate.left{opacity:.5}
.wu-av{width:30px;height:30px;border-radius:50%;object-fit:cover;background:#d8c9a3;display:grid;place-items:center;font-weight:800;color:#fff;font-size:.85rem;flex:0 0 auto}
.wu-mate .mn{font-size:.8rem;font-weight:700}
.wu-mate .mc{font-size:.72rem;color:var(--wu-soft)}

/* câu hỏi */
.wu-q{background:var(--wu-paper);border:1px solid var(--wu-line);border-radius:16px;padding:14px;text-align:center}
.wu-q .cn{font-family:"Songti SC","Noto Serif SC",serif;font-size:2.9rem;font-weight:600;color:var(--wu-ox);line-height:1.1}
.wu-q .py{font-size:.9rem;color:var(--wu-soft);margin-top:2px}
.wu-q .ask{font-size:.78rem;color:var(--wu-soft);margin:8px 0 10px}
.wu-opts{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.wu-opt{border:1px solid var(--wu-line);background:#fdf8ec;border-radius:12px;padding:12px 10px;font-size:.92rem;font-weight:700;color:var(--wu-ink);cursor:pointer;font-family:inherit;transition:.12s}
.wu-opt:hover{border-color:var(--wu-brasslt)}
.wu-opt.correct{background:#e3f0d8;border-color:#7fae63;color:#31611f}
.wu-opt.wrong{background:#f3ddd8;border-color:#c98a7f;color:#8a352a}
.wu-opt:disabled{cursor:default}
.wu-points{margin-top:10px;text-align:center;font-size:.82rem;color:var(--wu-brass);font-weight:800;min-height:18px}
.wu-coin{font-size:.95rem}

/* về đích */
.wu-done{text-align:center;padding:12px 6px}
.wu-done .big{font-size:2.4rem}
.wu-done h4{margin:6px 0 3px;font-family:"Iowan Old Style",Palatino,serif;color:var(--wu-olivedk);font-size:1.15rem}
.wu-done p{font-size:.85rem;color:var(--wu-soft);margin:0 0 12px}

@media (prefers-reduced-motion:reduce){.wu-track .runner{transition:none}.wu-spin{animation-duration:1.6s}}