#app.app-container{--practice-accent: #6650a4;--practice-accent-soft: #f0ebfa;width:min(calc(100% - 2rem),68rem);margin:2rem auto;color:var(--text-color);font-family:inherit;font-size:1rem;line-height:1.5}[data-theme=dark] #app.app-container{--practice-accent-soft: #342b49}#app *,#app *:before,#app *:after{box-sizing:border-box}#app button,#app input,#app select{font:inherit}#app button{cursor:pointer}#app button:focus-visible,#app input:focus-visible,#app select:focus-visible{outline:3px solid #b99af5;outline-offset:3px}#app .hidden,#app .modal.hidden{display:none!important}#app .level-selector-section,#app .exercise-header,#app .fraction-board{border:1px solid var(--border-color);border-radius:1.25rem;background:var(--bg-card);box-shadow:0 8px 24px color-mix(in srgb,var(--shadow-color) 55%,transparent)}#app .level-selector-section{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.25rem}#app .level-dropdown-wrapper{display:grid;gap:.35rem;min-width:min(100%,20rem)}#app .level-label{color:var(--text-muted);font-size:.9rem;font-weight:700}#app .level-dropdown{width:100%;min-height:2.8rem;padding:.5rem 2.25rem .5rem .75rem;border:1px solid var(--border-color);border-radius:.7rem;background:var(--bg-color);color:var(--text-color)}#app .header-stats,#app .stat-badge{display:flex;align-items:center;gap:.5rem}#app .header-stats{flex-wrap:wrap;justify-content:flex-end}#app .stat-badge{padding:.55rem .8rem;border:1px solid var(--border-color);border-radius:999px;background:var(--bg-color);font-size:.9rem;font-weight:700;white-space:nowrap}#app .streak-badge i{color:#e88433}#app .score-badge i{color:#c69727}#app .main-content{width:100%;padding:1rem 0}#app .exercise-header{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:1.25rem 1.5rem}#app .exercise-header-info{min-width:0}#app .exercise-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:.35rem}#app .level-tag,#app .exercise-label{display:inline-flex;align-items:center;min-height:1.7rem;padding:.1rem .65rem;border-radius:999px;background:var(--practice-accent-soft);color:var(--practice-accent);font-size:.8rem;font-weight:700}#app .exercise-title,#app .help-title,#app .modal-title,#app .success-title{line-height:1.2}#app .exercise-title{margin:.25rem 0;font-size:clamp(1.35rem,3vw,1.8rem)}#app .exercise-description{margin:0;color:var(--text-muted)}#app .help-button,#app .mode-btn,#app .verify-btn,#app .reset-btn,#app .modal-btn,#app .btn-next{min-height:2.7rem;padding:.6rem .9rem;border:1px solid var(--border-color);border-radius:.7rem;background:var(--bg-card);color:var(--text-color);font-weight:700;transition:background-color .15s ease,transform .15s ease,border-color .15s ease}#app .help-button:hover,#app .mode-btn:hover,#app .reset-btn:hover,#app .modal-btn:hover{border-color:var(--practice-accent);background:var(--practice-accent-soft)}#app .help-panel{margin-top:1rem;padding:1.25rem 1.5rem;border:1px solid #d9c8f4;border-radius:1rem;background:var(--practice-accent-soft)}#app .help-title{margin:0 0 .75rem;font-size:1.1rem}#app .help-steps{display:grid;gap:.55rem;margin:0;padding:0;list-style:none}#app .help-steps li{display:flex;align-items:flex-start;gap:.65rem}#app .help-steps li>span:first-child{display:inline-grid;flex:0 0 1.5rem;width:1.5rem;height:1.5rem;place-items:center;border-radius:50%;background:var(--practice-accent);color:#fff;font-size:.8rem;font-weight:700}#app .help-tip{display:flex;gap:.6rem;margin-top:1rem;padding-top:.8rem;border-top:1px solid var(--border-color)}#app .help-tip p{margin:0}#app .help-tip i{color:#c69727}#app .fraction-board{margin-top:1rem;padding:1.25rem}#app .mode-selector{display:flex;flex-wrap:wrap;gap:.6rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}#app .mode-btn.mode-active,#app .verify-btn,#app .btn-next{border-color:var(--practice-accent);background:var(--practice-accent);color:#fff}#app .mode-btn.mode-active:hover,#app .verify-btn:hover,#app .btn-next:hover{filter:brightness(1.08)}#app .math-board{display:flex;justify-content:center;width:100%;padding:clamp(1.5rem,5vw,3rem) 0}#app .equation-row{display:flex;align-items:center;justify-content:center;gap:clamp(.75rem,3vw,1.5rem);width:100%}#app .math-content{display:flex;flex-direction:column;align-items:center;gap:.45rem;min-width:7rem;padding:.75rem;border-radius:.8rem;background:var(--bg-color)}#app .fraction-container{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.25rem;min-height:2.5rem}#app .fraction-bar{width:100%;height:3px;border-radius:3px;background:var(--text-color);transition:opacity .15s ease}#app .factor-block{position:relative;min-width:2.5rem;min-height:2.5rem;padding:.3rem .45rem;border:2px solid #c9b5ec;border-radius:.65rem;background:var(--bg-card);color:var(--text-color);font-size:1.35rem;font-weight:700}#app .factor-block:hover,#app .factor-block-selected{border-color:var(--practice-accent);background:var(--practice-accent-soft)}#app .factor-block-crossed{opacity:.45}#app .factor-block-crossed .strike-line{position:absolute;top:50%;left:5%;width:90%;height:2px;background:#c83f46;transform:rotate(-35deg)}#app .multiplier-dot{font-size:1.2rem;font-weight:700}#app .equals-symbol{color:var(--practice-accent);font-size:2rem;font-weight:800}#app .answer-card{display:flex;align-items:center;gap:1rem;padding:1rem;border:1px solid var(--border-color);border-radius:1rem;background:var(--bg-color)}#app .fraction-input{display:grid;gap:.3rem;width:4.5rem}#app .math-input{width:100%;min-width:0;min-height:2.5rem;padding:.4rem;border:1px solid var(--border-color);border-radius:.5rem;background:var(--bg-card);color:var(--text-color);text-align:center}#app .input-divider{height:2px;background:var(--text-color)}#app .answer-actions{display:grid;gap:.5rem}#app .interactive-status{min-height:2.7rem;padding:.7rem .9rem;border-radius:.65rem;background:var(--practice-accent-soft);color:var(--text-color);text-align:center}#app .interactive-status p{margin:0}#app .modal{position:fixed;z-index:1000;inset:0;display:grid;place-items:center;padding:1rem}#app .modal-overlay{position:absolute;inset:0;background:#110f198c;backdrop-filter:blur(3px)}#app .modal-content{position:relative;z-index:1;width:min(100%,34rem);max-height:min(90vh,45rem);overflow-y:auto;padding:1.25rem;border:1px solid var(--border-color);border-radius:1.1rem;background:var(--bg-card);color:var(--text-color);box-shadow:0 20px 60px #00000040;opacity:0;transform:translateY(.5rem) scale(.98);transition:transform .18s ease,opacity .18s ease}#app .modal-content.show{opacity:1;transform:translateY(0) scale(1)}#app .modal-header,#app .modal-footer{display:flex;align-items:center;justify-content:space-between;gap:.75rem}#app .modal-header{margin-bottom:1rem}#app .modal-label{color:var(--text-muted);font-size:.8rem;font-weight:700}#app .modal-title{margin:.2rem 0 0;font-size:1.25rem}#app .modal-close{border:0;background:transparent;color:var(--text-color);font-size:1.3rem}#app .modal-description{margin:0 0 1rem;color:var(--text-muted)}#app .input-label,#app .suggestions-label{display:block;margin-bottom:.4rem;font-weight:700}#app .modal-input{text-align:left}#app .error-msg{color:#b4232c}#app .suggestions-group{margin:1rem 0}#app .suggestions-container{display:flex;flex-wrap:wrap;gap:.5rem}#app .suggestion-btn{padding:.45rem .7rem;border:1px solid var(--border-color);border-radius:.5rem;background:var(--bg-color);color:var(--text-color)}#app .modal-footer{justify-content:flex-end;margin-top:1rem}#app .success-modal-content{text-align:center;transform:translateY(.5rem) scale(.98);opacity:0;transition:transform .18s ease,opacity .18s ease}#app .success-modal-content.show{transform:translateY(0) scale(1);opacity:1}#app .success-icon{margin-bottom:.5rem;color:#c69727;font-size:2.5rem}#app .success-title{margin:0;font-size:1.6rem}#app .success-description{color:var(--text-muted)}#app .success-points{margin:1rem 0;color:var(--text-muted)}#app .points-value{color:var(--practice-accent);font-weight:800}#app .confetti-canvas{position:fixed;z-index:1100;inset:0;width:100vw;height:100vh;pointer-events:none}@keyframes practice-shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}#app .animate-shake{animation:practice-shake .18s ease-in-out 2}@media(max-width:720px){#app.app-container{width:min(calc(100% - 1rem),68rem);margin:.75rem auto}#app .level-selector-section{align-items:stretch;flex-direction:column}#app .header-stats{justify-content:flex-start}#app .exercise-header{align-items:stretch;flex-direction:column;gap:.85rem}#app .help-button{align-self:flex-start}#app .equation-row{flex-wrap:wrap}#app .answer-card{flex:1 1 100%;justify-content:center}}@media(max-width:420px){#app .fraction-board{padding:.85rem}#app .answer-card{align-items:stretch;flex-direction:column}#app .fraction-input{grid-template-columns:1fr auto 1fr;align-items:center;width:100%}#app .input-divider{width:1rem}#app .answer-actions{grid-template-columns:1fr 1fr}}