*{margin:0;padding:0;box-sizing:border-box}html{touch-action:manipulation}body{font-family:Comic Sans MS,Chalkboard SE,Arial Rounded MT Bold,cursive,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2,#f093fb,#4facfe,#00f2fe);background-size:400% 400%;animation:gradientShift 15s ease infinite;min-height:100vh;margin:0;padding:0;overflow-x:hidden}@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}#app{width:100vw;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:2rem 1rem}h1{color:#fff;font-size:clamp(2rem,8vw,5rem);text-shadow:4px 4px 8px rgba(0,0,0,.3);margin-bottom:1.5rem;text-align:center;animation:bounce 2s ease-in-out infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.screen{display:none;width:100%;max-width:1400px;animation:fadeIn .3s ease}.screen.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.app-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:2rem;padding:2rem}.app-icon{display:flex;flex-direction:column;align-items:center;gap:.75rem;background:none;border:none;cursor:pointer;transition:transform .2s ease}.app-icon:hover{transform:scale(1.1)}.app-icon:active{transform:scale(.95)}.app-icon-image{width:120px;height:120px;border-radius:28px;display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:700;color:#fff;box-shadow:0 10px 30px #0000004d;position:relative;overflow:hidden}.app-icon-image:after{content:"";position:absolute;top:0;left:0;right:0;height:50%;background:linear-gradient(to bottom,rgba(255,255,255,.3),transparent);border-radius:28px 28px 0 0}.app-icon[data-app=alphabet] .app-icon-image{background:linear-gradient(135deg,#ff6b6b,#ee5a6f)}.app-icon[data-app=numbers] .app-icon-image{background:linear-gradient(135deg,#4ecdc4,#44a08d)}.app-icon[data-app=missing] .app-icon-image{background:linear-gradient(135deg,#f9ca24,#f0932b)}.app-icon[data-app=letterrecog] .app-icon-image{background:linear-gradient(135deg,#a29bfe,#6c5ce7)}.app-icon[data-app=math] .app-icon-image{background:linear-gradient(135deg,#fd79a8,#e84393)}.app-icon[data-app=phonicsmatch] .app-icon-image{background:linear-gradient(135deg,#00b894,#00cec9);font-size:2rem}.app-label{color:#fff;font-size:1.1rem;font-weight:600;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.back-button{position:fixed;top:1rem;left:1rem;padding:.75rem 1.25rem;font-size:1rem;font-weight:700;font-family:inherit;border:none;border-radius:12px;cursor:pointer;background:#ffffffe6;color:#6c5ce7;box-shadow:0 4px 15px #0003;transition:all .3s ease;z-index:100}.back-button:hover{transform:scale(1.05);background:#fff;box-shadow:0 6px 20px #0000004d}.back-button:active{transform:scale(.95)}.app-title{color:#fff;font-size:clamp(1.5rem,5vw,2.5rem);text-shadow:3px 3px 6px rgba(0,0,0,.3);margin-bottom:1rem;text-align:center}#alphabet-grid,#numbers-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:1rem;width:100%;max-width:1400px;padding:1rem}.letter-button{aspect-ratio:1;border:none;border-radius:20px;font-size:clamp(2rem,5vw,4rem);font-weight:700;color:#fff;cursor:pointer;transition:all .3s ease;box-shadow:0 8px 15px #0003;position:relative;overflow:hidden}.letter-button:hover{transform:scale(1.1) rotate(5deg);box-shadow:0 12px 25px #0000004d}.letter-button:active{transform:scale(.95) rotate(-5deg);box-shadow:0 4px 10px #0003}.letter-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.letter-button:hover:before{left:100%}.letter-button.key-pressed{animation:keyPressAnimation .3s ease;box-shadow:0 0 30px #fffc,0 12px 25px #0000004d}@keyframes keyPressAnimation{0%{transform:scale(1)}50%{transform:scale(1.25) rotate(5deg)}to{transform:scale(1)}}.letter-button:nth-child(6n+1){background:linear-gradient(135deg,#ff6b6b,#ee5a6f)}.letter-button:nth-child(6n+2){background:linear-gradient(135deg,#4ecdc4,#44a08d)}.letter-button:nth-child(6n+3){background:linear-gradient(135deg,#f9ca24,#f0932b)}.letter-button:nth-child(6n+4){background:linear-gradient(135deg,#a29bfe,#6c5ce7)}.letter-button:nth-child(6n+5){background:linear-gradient(135deg,#fd79a8,#e84393)}.letter-button:nth-child(6n){background:linear-gradient(135deg,#00b894,#55efc4)}#numbers-grid{grid-template-columns:repeat(10,minmax(50px,70px));justify-content:center}.number-button{aspect-ratio:1;border:none;border-radius:10px;font-size:clamp(.9rem,2vw,1.3rem);font-weight:700;font-family:inherit;color:#fff;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 8px #0003;position:relative;overflow:hidden}.number-button:hover{transform:scale(1.1) rotate(3deg);box-shadow:0 10px 20px #0000004d}.number-button:active{transform:scale(.95) rotate(-3deg);box-shadow:0 3px 8px #0003}.number-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.number-button:hover:before{left:100%}.number-button:nth-child(10n+1){background:linear-gradient(135deg,#ff6b6b,#ee5a6f)}.number-button:nth-child(10n+2){background:linear-gradient(135deg,#4ecdc4,#44a08d)}.number-button:nth-child(10n+3){background:linear-gradient(135deg,#f9ca24,#f0932b)}.number-button:nth-child(10n+4){background:linear-gradient(135deg,#a29bfe,#6c5ce7)}.number-button:nth-child(10n+5){background:linear-gradient(135deg,#fd79a8,#e84393)}.number-button:nth-child(10n+6){background:linear-gradient(135deg,#00b894,#55efc4)}.number-button:nth-child(10n+7){background:linear-gradient(135deg,#74b9ff,#0984e3)}.number-button:nth-child(10n+8){background:linear-gradient(135deg,#ffeaa7,#fdcb6e)}.number-button:nth-child(10n+9){background:linear-gradient(135deg,#dfe6e9,#b2bec3);color:#2d3436}.number-button:nth-child(10n){background:linear-gradient(135deg,#fab1a0,#e17055)}.app-subtitle{color:#fff;font-size:clamp(1rem,3vw,1.3rem);text-shadow:2px 2px 4px rgba(0,0,0,.3);margin-bottom:1rem;text-align:center}.missing-buttons{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem;flex-wrap:wrap}.action-button{padding:.75rem 1.5rem;font-size:1.1rem;font-weight:700;font-family:inherit;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #0003}.action-button:hover{transform:scale(1.05)}.action-button:active{transform:scale(.95)}.check-btn{background:linear-gradient(135deg,#00b894,#55efc4);color:#fff}.check-btn:disabled{background:linear-gradient(135deg,#b2bec3,#dfe6e9);cursor:not-allowed;transform:none;opacity:.7}.reset-btn{background:linear-gradient(135deg,#fd79a8,#e84393);color:#fff}#missing-grid{display:grid;grid-template-columns:repeat(10,minmax(40px,60px));gap:4px;justify-content:center;background:#fff;padding:10px;border-radius:15px;box-shadow:0 10px 30px #0003}.missing-cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:clamp(.9rem,2vw,1.3rem);font-weight:700;font-family:inherit;border:2px solid #55efc4;border-radius:6px;background:#fff;color:#2d3436}.missing-cell.empty{border:2px solid #74b9ff;border-style:dashed}.missing-cell input{width:100%;height:100%;border:none;background:transparent;text-align:center;font-size:inherit;font-weight:700;font-family:inherit;color:#0984e3;outline:none}.missing-cell input:focus{background:#74b9ff33}.missing-cell.correct{background:#d4edda;border-color:#28a745}.missing-cell.correct input{color:#28a745}.missing-cell.incorrect{background:#f8d7da;border-color:#dc3545}.missing-cell.incorrect input{color:#dc3545}.missing-content{display:flex;gap:2rem;justify-content:center;align-items:flex-start;flex-wrap:wrap}.scoreboard{background:#fff;border-radius:15px;padding:1rem;min-width:200px;max-width:250px;box-shadow:0 10px 30px #0003}.scoreboard-header{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid #dfe6e9;padding-bottom:.5rem;margin-bottom:1rem}.scoreboard-title{color:#6c5ce7;font-size:1.3rem;margin:0}.clear-history-btn{width:24px;height:24px;border:none;border-radius:50%;background:#dfe6e9;color:#636e72;font-size:1.1rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;line-height:1}.clear-history-btn:hover{background:#e84393;color:#fff}#score-history{max-height:400px;overflow-y:auto}.score-row{display:flex;justify-content:space-between;align-items:center;padding:.5rem;border-bottom:1px solid #f1f2f6;animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.score-row:last-child{border-bottom:none}.score-number{font-weight:700;color:#2d3436;font-size:1rem}.score-stars{font-size:1.2rem}.star{color:#dfe6e9}.star.filled{color:#f9ca24}.score-row.perfect{background:linear-gradient(135deg,#d4edda,#c3e6cb);border-radius:8px}.letter-recog-buttons{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem;flex-wrap:wrap}.letter-recog-content{display:flex;gap:2rem;justify-content:center;align-items:flex-start;flex-wrap:wrap}#letter-recog-grid{background:#fff;border-radius:15px;padding:1.5rem;box-shadow:0 10px 30px #0003}.letter-row{display:flex;align-items:center;gap:1rem;padding:.75rem 0;border-bottom:1px solid #dfe6e9}.letter-row:last-child{border-bottom:none}.row-number{color:#636e72;font-size:1rem;min-width:25px}.uppercase-letter{font-size:3rem;font-weight:700;color:#2d3436;min-width:60px;text-align:center}.letter-options{display:flex;gap:.75rem}.letter-option{display:flex;flex-direction:column;align-items:center;gap:.5rem}.letter-option-box{width:60px;height:60px;border:2px solid #b2bec3;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:2rem;color:#2d3436;background:#fff;cursor:pointer;transition:all .2s ease}.letter-option-box:hover{border-color:#6c5ce7;background:#f8f9fa}.letter-option input[type=radio]{width:18px;height:18px;cursor:pointer;accent-color:#6c5ce7}.letter-option input[type=radio]:checked+.letter-option-box,.letter-option-box.selected{border-color:#6c5ce7;background:#f0efff}.letter-row.correct .letter-option-box.selected{border-color:#28a745;background:#d4edda}.letter-row.incorrect .letter-option-box.selected{border-color:#dc3545;background:#f8d7da}.letter-row.correct .uppercase-letter,.letter-row.incorrect .uppercase-letter{padding:.25rem .5rem;border-radius:8px}.letter-row.correct .uppercase-letter{background:#d4edda;color:#28a745}.letter-row.incorrect .uppercase-letter{background:#f8d7da;color:#dc3545}.math-buttons{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem;flex-wrap:wrap}.settings-btn{background:linear-gradient(135deg,#636e72,#2d3436);color:#fff}.math-content{display:flex;gap:2rem;justify-content:center;align-items:flex-start;flex-wrap:wrap}#math-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;background:#fff;border-radius:15px;padding:1.5rem;box-shadow:0 10px 30px #0003}.math-problem{display:flex;flex-direction:column;align-items:center;padding:.5rem}.problem-number{align-self:flex-start;color:#636e72;font-size:.9rem;margin-bottom:.25rem}.problem-content{display:flex;flex-direction:column;align-items:flex-end}.problem-row{display:flex;align-items:center;gap:.5rem}.problem-operator{font-size:1.5rem;font-weight:700;color:#2d3436;min-width:20px}.problem-value{font-size:1.8rem;font-weight:700;color:#2d3436;min-width:40px;text-align:right}.problem-line{width:100%;height:2px;background:#2d3436;margin:.25rem 0}.problem-answer{width:60px;height:40px;border:2px solid #74b9ff;border-radius:8px;font-size:1.3rem;font-weight:700;font-family:inherit;text-align:center;color:#0984e3;outline:none;margin-top:.25rem}.problem-answer:focus{border-color:#0984e3;background:#74b9ff1a}.math-problem.correct .problem-answer{border-color:#28a745;background:#d4edda;color:#28a745}.math-problem.incorrect .problem-answer{border-color:#dc3545;background:#f8d7da;color:#dc3545}.modal-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:1000;justify-content:center;align-items:center;padding:1rem}.modal-overlay.active{display:flex}.modal{background:#fff;border-radius:15px;max-width:400px;width:100%;box-shadow:0 20px 60px #0000004d;animation:modalSlideIn .3s ease}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid #dfe6e9}.modal-header h3{margin:0;color:#2d3436;font-size:1.3rem}.modal-close{width:30px;height:30px;border:none;border-radius:50%;background:#dfe6e9;color:#636e72;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.modal-close:hover{background:#e84393;color:#fff}.modal-body{padding:1.5rem}.setting-group{margin-bottom:1.5rem}.setting-group:last-child{margin-bottom:0}.setting-label{display:block;font-weight:700;color:#2d3436;margin-bottom:.75rem}.checkbox-group{display:flex;flex-direction:column;gap:.5rem}.checkbox-label{display:flex;align-items:center;gap:.5rem;cursor:pointer;color:#636e72}.checkbox-label input[type=checkbox]{width:18px;height:18px;accent-color:#6c5ce7;cursor:pointer}.setting-input{width:100%;padding:.75rem;border:2px solid #dfe6e9;border-radius:8px;font-size:1rem;font-family:inherit;color:#2d3436;outline:none}.setting-input:focus{border-color:#6c5ce7}.modal-footer{padding:1rem 1.5rem;border-top:1px solid #dfe6e9;display:flex;justify-content:flex-end}.phonics-match-buttons{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem;flex-wrap:wrap}.phonics-match-content{display:flex;gap:2rem;justify-content:center;align-items:flex-start;flex-wrap:wrap}#phonics-match-grid{background:#fff;border-radius:15px;padding:1.5rem;box-shadow:0 10px 30px #0003}.phonics-match-row{display:flex;align-items:center;gap:1rem;padding:.75rem 0;border-bottom:1px solid #dfe6e9}.phonics-match-row:last-child{border-bottom:none}.play-sound-btn{width:60px;height:60px;border:none;border-radius:50%;background:linear-gradient(135deg,#00b894,#00cec9);color:#fff;font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;box-shadow:0 4px 15px #00b89466}.play-sound-btn:hover{transform:scale(1.1);box-shadow:0 6px 20px #00b89480}.play-sound-btn:active{transform:scale(.95)}.play-sound-btn.playing{animation:pulse .5s ease}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.15)}to{transform:scale(1)}}.phonics-match-row.correct .play-sound-btn{background:linear-gradient(135deg,#28a745,#20c997)}.phonics-match-row.incorrect .play-sound-btn{background:linear-gradient(135deg,#dc3545,#e84393)}@media(max-width:768px){#alphabet-grid{grid-template-columns:repeat(auto-fit,minmax(80px,1fr));gap:.75rem}#numbers-grid{grid-template-columns:repeat(5,minmax(45px,60px));gap:.4rem}h1{margin-bottom:1rem}.app-grid{gap:1.5rem;padding:1rem}.app-icon-image{width:100px;height:100px;border-radius:24px;font-size:2rem}.app-label{font-size:1rem}.back-button{padding:.6rem 1rem;font-size:.9rem}#missing-grid{grid-template-columns:repeat(10,minmax(30px,45px));gap:3px;padding:8px}.action-button{padding:.6rem 1.2rem;font-size:1rem}.missing-content{flex-direction:column;align-items:center}.scoreboard{width:100%;max-width:100%;min-width:auto}#score-history{max-height:200px}.letter-recog-content{flex-direction:column;align-items:center}.uppercase-letter{font-size:2.5rem;min-width:50px}.letter-option-box{width:50px;height:50px;font-size:1.7rem}.letter-options{gap:.5rem}.math-content{flex-direction:column;align-items:center}#math-grid{grid-template-columns:repeat(3,1fr);gap:1rem;padding:1rem}.problem-value{font-size:1.5rem}.problem-operator{font-size:1.3rem}.phonics-match-content{flex-direction:column;align-items:center}.play-sound-btn{width:50px;height:50px;font-size:1.3rem}}@media(max-width:480px){#alphabet-grid{grid-template-columns:repeat(auto-fit,minmax(60px,1fr));gap:.5rem}#numbers-grid{grid-template-columns:repeat(5,minmax(40px,55px));gap:.3rem}.number-button{font-size:clamp(.8rem,3vw,1.1rem)}.app-icon-image{width:80px;height:80px;border-radius:20px;font-size:1.75rem}.app-label{font-size:.9rem}#missing-grid{grid-template-columns:repeat(10,minmax(25px,35px));gap:2px;padding:6px}.missing-cell{font-size:clamp(.7rem,2.5vw,.9rem)}.action-button{padding:.5rem 1rem;font-size:.9rem}.uppercase-letter{font-size:2rem;min-width:40px}.letter-option-box{width:42px;height:42px;font-size:1.4rem}.letter-options{gap:.4rem}.letter-option input[type=radio]{width:14px;height:14px}.row-number{font-size:.85rem;min-width:20px}#letter-recog-grid{padding:1rem}.letter-row{gap:.5rem;padding:.5rem 0}#math-grid{grid-template-columns:repeat(2,1fr);gap:.75rem}.problem-value{font-size:1.3rem;min-width:30px}.problem-operator{font-size:1.1rem;min-width:15px}.problem-answer{width:50px;height:35px;font-size:1.1rem}.math-problem{padding:.25rem}.play-sound-btn{width:45px;height:45px;font-size:1.1rem}.phonics-match-row{gap:.5rem}#phonics-match-grid{padding:1rem}}