/* v5: chọn lớp 6–9 + khu trò chơi hoá (XP, chuỗi ngày, nhiệm vụ, huy hiệu) */
:root{--card:#fff}
:root[data-theme=dark],[data-theme=dark]{--card:#252a40}
[data-theme=dark] .auth-school,[data-theme=dark] .lb em{color:#aab5ff}
.gsw{display:flex;gap:4px;padding:3px;border-radius:999px;background:color-mix(in srgb,var(--blue,#4b5bb0) 12%,transparent);flex:none}
.gsw button{width:34px;height:34px;border-radius:50%;border:0;background:transparent;color:inherit;font:800 15px 'Baloo 2',system-ui,sans-serif;cursor:pointer}
.gsw button.on{background:#4b5bb0;color:#fff;box-shadow:0 2px 6px #4b5bb055}
.gsw button:not(.on):hover{background:color-mix(in srgb,#4b5bb0 18%,transparent)}
.gsw button:focus-visible{outline:3px solid #f5a623;outline-offset:1px}
.game{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:14px;margin:18px 0}
.game>div,.game .g-bd{border-radius:20px;padding:16px 18px;background:var(--card,#fff);border:1px solid var(--line,#0001);box-shadow:0 4px 14px #0001}
.game small{display:block;font-size:11px;font-weight:800;letter-spacing:.06em;opacity:.65}
.game b{font:800 18px 'Baloo 2',system-ui,sans-serif}
.game em{font-size:12.5px;font-style:normal;opacity:.75}
.g-lv{display:flex;gap:14px;align-items:center}.g-lv>div:last-child{flex:1;min-width:0}
.g-ava{flex:none;width:56px;height:56px;border-radius:18px;display:grid;place-items:center;font:800 26px 'Baloo 2',sans-serif;color:#fff;background:linear-gradient(135deg,#7a5af0,#e5604a);transform:rotate(-6deg)}
.g-st{display:flex;gap:12px;align-items:center}.g-flame{font-size:38px;filter:drop-shadow(0 3px 6px #e5604a66)}.g-st b{font-size:32px;line-height:1;display:block}
.g-mis .dots{display:flex;gap:8px;margin:8px 0 4px}.g-mis .dots i{width:26px;height:26px;border-radius:50%;border:2px dashed #8a93c9}
.g-mis .dots i.on{border:0;background:#2faa68;position:relative}.g-mis .dots i.on::after{content:'✓';position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px}
.game .g-bd{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px}
.bd{display:flex;align-items:center;gap:8px;padding:6px 12px 6px 8px;border-radius:999px;background:#8a93c922;filter:grayscale(1);opacity:.55}
.bd.on{filter:none;opacity:1;background:#f5a62326}.bd i{font-style:normal;font-size:22px}.bd small{font-size:12px;letter-spacing:0;opacity:1}
@media(max-width:860px){.game{grid-template-columns:1fr}.brand-tx small{display:none}.gsw button{width:30px;height:30px;font-size:14px}}
[data-theme=dark] .game>div,[data-theme=dark] .game .g-bd{background:#252a40;border-color:#ffffff1a}

/* tài khoản, lời khen */
.me{display:flex;align-items:center;gap:6px;flex:none}.me-chip{display:flex;flex-direction:column;line-height:1.15;text-align:right;font-size:13px;max-width:130px}.me-chip b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.me-chip small{opacity:.7;font-size:11px}
@media(max-width:700px){.me-chip{display:none}}
#auth{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:16px;background:linear-gradient(135deg,#3b4a9c,#7a5af0 55%,#e5604a);overflow:auto}
.auth-card{width:min(420px,100%);background:var(--card,#fff);color:var(--ink,#1f2340);border-radius:26px;padding:26px 24px;box-shadow:0 20px 60px #0005;display:grid;gap:12px}
.auth-card h1{font:800 22px 'Baloo 2',sans-serif;margin:0;text-align:center}.auth-sub{margin:0;text-align:center;opacity:.7;font-size:14px}
.auth-logo{width:62px;height:62px;border-radius:20px;margin:0 auto;display:grid;place-items:center;font:800 28px 'Baloo 2',sans-serif;color:#fff;background:linear-gradient(135deg,#7a5af0,#e5604a);transform:rotate(-6deg)}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;border-radius:14px;background:#8a93c922}.auth-tabs button{border:0;padding:9px;border-radius:11px;background:transparent;color:inherit;font-weight:700;font-size:14px;font-family:inherit;cursor:pointer}.auth-tabs .on{background:#4b5bb0;color:#fff}
.auth-card label{display:grid;gap:5px;font-weight:600;font-size:14px}.auth-card label small{font-weight:400;opacity:.65}
.auth-card input{font-size:16px;font-family:inherit;padding:11px 13px;border-radius:12px;border:1.5px solid #8a93c966;background:transparent;color:inherit;width:100%}.auth-card input:focus{outline:3px solid #f5a62366;border-color:#f5a623}
.pw{position:relative;display:block}.pw-t{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:none;font-size:18px;cursor:pointer}
.auth-err{margin:0;color:#d9534f;font-weight:600;font-size:14px}.auth-go{padding:13px;font-size:16px}.auth-guest{border:0;background:none;color:inherit;opacity:.65;text-decoration:underline;cursor:pointer;font-size:13px;font-family:inherit}
.auth-open body{overflow:hidden}
.praise{margin:8px 0 0;padding:9px 12px;border-radius:12px;background:#f5a62320;font-weight:600}
.ex-fb.bad .praise{background:#4b5bb01c}
#toasts{position:fixed;left:50%;bottom:calc(76px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:900;display:grid;gap:8px;justify-items:center;pointer-events:none;width:min(92vw,420px)}
.toast{display:flex;gap:10px;align-items:center;padding:10px 16px;border-radius:99px;background:#1f2340;color:#fff;box-shadow:0 8px 24px #0004;font-weight:600;font-size:14px;animation:tin .3s ease}.toast.out{opacity:0;transform:translateY(8px);transition:.4s}
.toast .xp{background:#f5a623;color:#3a2600;padding:2px 9px;border-radius:99px;font-size:13px}
@keyframes tin{from{opacity:0;transform:translateY(14px) scale(.96)}}
@media(prefers-reduced-motion:reduce){.toast{animation:none}}