.kad-tool{--kad-navy:#172554;--kad-blue:#2563eb;--kad-blue-dark:#1d4ed8;--kad-sky:#dbeafe;--kad-yellow:#facc15;--kad-orange:#f97316;--kad-green:#16a34a;--kad-red:#dc2626;--kad-muted:#64748b;position:relative;isolation:isolate;overflow:hidden;padding:clamp(1rem,3vw,2rem);border:1px solid #dbeafe;border-radius:24px;background:linear-gradient(145deg,#f8fbff 0%,#eff6ff 54%,#fff7ed 100%);color:var(--kad-navy);box-shadow:0 18px 50px rgba(30,64,175,.09)}
.kad-decor{position:absolute;z-index:-1;border-radius:50%;filter:blur(2px);opacity:.45;pointer-events:none}
.kad-decor-one{width:190px;height:190px;right:-70px;top:-80px;background:#bfdbfe}
.kad-decor-two{width:150px;height:150px;left:-70px;bottom:-85px;background:#fed7aa}
.kad-hero{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;margin-bottom:1.35rem}
.kad-brand{display:flex;align-items:center;gap:1rem;min-width:260px}
.kad-hero-icon{position:relative;width:64px;height:64px;display:grid;place-items:center;flex:0 0 auto;border:4px solid #fff;border-radius:20px;background:linear-gradient(145deg,#60a5fa,var(--kad-blue));color:#fff;font-size:2.2rem;font-weight:900;box-shadow:0 9px 22px rgba(37,99,235,.27);transform:rotate(-4deg)}
.kad-hero-icon::after{content:"−";position:absolute;right:-8px;bottom:-8px;width:25px;height:25px;display:grid;place-items:center;border:3px solid #fff;border-radius:8px;background:var(--kad-orange);font-size:.9rem}
.kad-hero-body{min-width:0}
.kad-kicker{display:block;color:var(--kad-blue);font-size:.7rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.kad-hero h2{margin:.15rem 0 .2rem;color:var(--kad-navy);font-size:clamp(1.5rem,3vw,2rem);line-height:1.1}
.kad-hero p{max-width:34rem;margin:0;color:var(--kad-muted);font-size:.93rem}
.kad-stats{display:grid;grid-template-columns:repeat(4,minmax(76px,1fr));gap:.55rem}
.kad-stat{display:flex;align-items:center;gap:.45rem;min-width:82px;padding:.65rem .7rem;border:1px solid #dbeafe;border-radius:14px;background:rgba(255,255,255,.88);box-shadow:0 4px 12px rgba(30,64,175,.05)}
.kad-stat-icon{width:27px;height:27px;display:grid;place-items:center;flex:0 0 auto;border-radius:9px;background:#eff6ff;color:var(--kad-blue);font-size:.82rem;font-weight:900}
.kad-stat-score .kad-stat-icon{background:#fef9c3;color:#ca8a04}
.kad-stat strong{display:block;color:var(--kad-navy);font-size:1.15rem;line-height:1;font-variant-numeric:tabular-nums}
.kad-stat small{display:block;margin-top:.15rem;color:var(--kad-muted);font-size:.58rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
.kad-settings{display:flex;align-items:flex-end;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem;padding:.85rem;border:1px solid #dbeafe;border-radius:17px;background:rgba(255,255,255,.78)}
.kad-setting{display:flex;flex:1 1 150px;flex-direction:column;gap:.35rem;margin:0}
.kad-setting:first-child{flex:1.35 1 240px}
.kad-setting-label{color:#475569;font-size:.67rem;font-weight:900;letter-spacing:.07em;text-transform:uppercase}
.kad-pills{display:flex;gap:.35rem;padding:.25rem;border-radius:12px;background:#eff6ff}
.kad-pill{flex:1;padding:.48rem .65rem;border:0;border-radius:9px;background:transparent;color:#475569;font:inherit;font-size:.76rem;font-weight:800;cursor:pointer;transition:background .18s,color .18s,box-shadow .18s}
.kad-pill:hover{color:var(--kad-blue)}
.kad-pill.is-active{background:#fff;color:var(--kad-blue-dark);box-shadow:0 3px 10px rgba(30,64,175,.13)}
.kad-select{width:100%;min-height:38px;padding:.45rem 2rem .45rem .65rem;border:1px solid #bfdbfe;border-radius:10px;background:#fff;color:var(--kad-navy);font:inherit;font-size:.78rem;font-weight:800}
.kad-sound{min-height:38px;padding:.45rem .75rem;border:1px solid #bfdbfe;border-radius:10px;background:#fff;color:#64748b;font:inherit;font-size:.75rem;font-weight:800;cursor:pointer;white-space:nowrap}
.kad-sound.is-on{border-color:#93c5fd;background:#eff6ff;color:var(--kad-blue-dark)}
.kad-quiz{position:relative;padding:clamp(1rem,3vw,1.6rem);border:1px solid #dbeafe;border-radius:20px;background:rgba(255,255,255,.94);box-shadow:0 10px 30px rgba(30,64,175,.08)}
.kad-round-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.45rem}
.kad-round,.kad-encouragement{color:#64748b;font-size:.7rem;font-weight:900;letter-spacing:.06em;text-transform:uppercase}
.kad-encouragement{color:var(--kad-blue);letter-spacing:0;text-transform:none}
.kad-progress{height:8px;overflow:hidden;border-radius:99px;background:#e2e8f0}
.kad-progress span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--kad-blue),#38bdf8);transition:width .25s ease}
.kad-problem-card{max-width:630px;margin:1rem auto .9rem;padding:1.1rem 1rem;border:2px dashed #bfdbfe;border-radius:18px;background:linear-gradient(135deg,#eff6ff,#f8fafc);text-align:center}
.kad-prompt{margin:0 0 .3rem;color:#64748b;font-size:.78rem;font-weight:700}
.kad-question{color:var(--kad-navy);font-size:clamp(2rem,6vw,3.2rem);font-weight:900;line-height:1.15;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.kad-choice-label{margin:.25rem 0 .55rem;text-align:center;color:#64748b;font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.kad-choices{display:grid;grid-template-columns:repeat(4,minmax(80px,1fr));gap:.65rem;max-width:630px;margin:0 auto}
.kad-choice{position:relative;min-height:70px;padding:.65rem;border:2px solid #dbeafe;border-radius:15px;background:#fff;color:var(--kad-navy);font:inherit;font-size:1.4rem;font-weight:900;font-variant-numeric:tabular-nums;cursor:pointer;box-shadow:0 5px 12px rgba(30,64,175,.05);transition:transform .16s,border-color .16s,box-shadow .16s,background .16s}
.kad-choice:hover:not(:disabled),.kad-choice:focus-visible{z-index:1;transform:translateY(-3px);border-color:#60a5fa;outline:3px solid rgba(96,165,250,.2);box-shadow:0 9px 18px rgba(37,99,235,.13)}
.kad-choice-key{position:absolute;left:.45rem;top:.42rem;width:20px;height:20px;display:grid;place-items:center;border-radius:6px;background:#eff6ff;color:#64748b;font-size:.61rem}
.kad-choice.is-correct{border-color:#22c55e;background:#f0fdf4;color:#166534;animation:kad-pop .35s ease}
.kad-choice.is-correct::after{content:"✓";position:absolute;right:.45rem;top:.35rem;color:var(--kad-green);font-size:.9rem}
.kad-choice.is-wrong{border-color:#ef4444;background:#fef2f2;color:#991b1b;animation:kad-shake .4s ease}
.kad-feedback{max-width:630px;min-height:38px;margin:.75rem auto 0;padding:.55rem .75rem;border-radius:11px;background:#f8fafc;color:#64748b;text-align:center;font-size:.8rem;font-weight:700}
.kad-feedback.is-success{background:#f0fdf4;color:#166534}.kad-feedback.is-error{background:#fef2f2;color:#991b1b}.kad-feedback.is-info{background:#eff6ff;color:#1e40af}
.kad-actions{display:flex;justify-content:center;gap:.6rem;margin-top:.85rem}
.kad-actions .btn,.kad-summary .btn{display:inline-flex!important;align-items:center;justify-content:center;visibility:visible!important;min-width:150px;min-height:44px;padding:.65rem 1rem;border:2px solid var(--kad-blue);border-radius:11px;font:inherit;font-size:.82rem;font-weight:800;line-height:1.2;text-decoration:none;cursor:pointer}
.kad-actions .btn-primary,.kad-summary .btn-primary{background:var(--kad-blue)!important;color:#fff!important;box-shadow:0 6px 14px rgba(37,99,235,.2)}
.kad-actions .btn-primary:hover,.kad-summary .btn-primary:hover{border-color:var(--kad-blue-dark);background:var(--kad-blue-dark)!important}
.kad-actions .btn-outline{border-color:#93c5fd!important;background:#fff!important;color:var(--kad-blue-dark)!important}
.kad-actions .btn-outline:hover{background:#eff6ff!important}
.kad-actions .btn:focus-visible,.kad-summary .btn:focus-visible{outline:3px solid rgba(96,165,250,.32);outline-offset:2px}
.kad-actions .btn:disabled{display:inline-flex!important;visibility:visible!important;cursor:not-allowed;opacity:.58}
.kad-visual{display:flex;flex-wrap:wrap;justify-content:center;gap:.3rem;max-width:500px;margin:.7rem auto 0}
.kad-visual:empty{display:none}
.kad-dot{width:15px;height:15px;border-radius:50%;background:#60a5fa;box-shadow:inset 0 -2px 0 rgba(30,64,175,.18)}
.kad-dot.is-second{background:#fb923c}.kad-dot.is-crossed{opacity:.22;transform:scale(.75)}
.kad-summary{margin-top:1rem;padding:1.5rem;border:1px solid #fde68a;border-radius:20px;background:linear-gradient(135deg,#fffbeb,#fff7ed);text-align:center}
.kad-summary-icon{width:54px;height:54px;display:grid;place-items:center;margin:0 auto .6rem;border-radius:50%;background:#fef3c7;font-size:1.7rem}
.kad-summary h3{margin:.25rem 0;color:var(--kad-navy)}.kad-summary p{max-width:560px;margin:.35rem auto 1rem;color:#64748b}
.kad-footer{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:.8rem;padding:0 .25rem;color:#64748b;font-size:.7rem}
.kad-reset{padding:.25rem;border:0;background:transparent;color:#64748b;font:inherit;font-weight:800;text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.kad-celebrate{position:absolute;inset:0;z-index:5;overflow:hidden;pointer-events:none}.kad-particle{position:absolute;color:var(--kad-yellow);font-size:1.25rem;opacity:0;animation:kad-float 1.4s ease forwards}
@keyframes kad-pop{0%{transform:scale(1)}50%{transform:scale(1.07)}100%{transform:scale(1)}}@keyframes kad-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}@keyframes kad-float{0%{opacity:1;transform:translateY(0) rotate(0)}100%{opacity:0;transform:translateY(-130px) rotate(160deg) scale(.55)}}
@media(max-width:900px){.kad-hero{align-items:flex-start;flex-direction:column}.kad-stats{width:100%}.kad-settings{align-items:stretch}.kad-sound{align-self:flex-end}}
@media(max-width:640px){.kad-tool{border-radius:18px}.kad-brand{align-items:flex-start}.kad-hero-icon{width:53px;height:53px;border-radius:16px;font-size:1.75rem}.kad-stats{grid-template-columns:repeat(2,1fr)}.kad-stat{justify-content:center}.kad-settings{display:grid;grid-template-columns:1fr}.kad-setting:first-child{min-width:0}.kad-sound{width:100%}.kad-choices{grid-template-columns:repeat(2,1fr)}.kad-actions{flex-direction:column-reverse}.kad-actions .btn{width:100%}.kad-footer{align-items:flex-start;flex-direction:column}.kad-question{font-size:2.2rem}}
@media(prefers-reduced-motion:reduce){.kad-progress span,.kad-choice{transition:none}.kad-choice.is-correct,.kad-choice.is-wrong,.kad-particle{animation:none}}