@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Plus+Jakarta+Sans:wght@400;700&display=swap";:root{--primary: #1e293b;--primary-light: #334155;--accent: #10b981;--accent-hover: #059669;--secondary: #f59e0b;--error: #ef4444;--bg-gradient: radial-gradient(at 0% 0%, rgba(16, 185, 129, .05) 0px, transparent 50%), radial-gradient(at 100% 0%, rgba(245, 158, 11, .05) 0px, transparent 50%), radial-gradient(at 100% 100%, rgba(99, 102, 241, .05) 0px, transparent 50%), radial-gradient(at 0% 100%, rgba(239, 68, 68, .05) 0px, transparent 50%);--bg-color: #f8fafc;--glass: rgba(255, 255, 255, .7);--glass-border: rgba(255, 255, 255, .4);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-lg: 24px;--radius-md: 16px;--font-main: "Outfit", sans-serif;--font-heading: "Plus Jakarta Sans", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);background-image:var(--bg-gradient);color:var(--primary);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{max-width:1400px;margin:0 auto;padding:1.5rem}.supermarket-header{text-align:center;margin-bottom:3rem;padding-top:1rem}.supermarket-header h1{font-family:var(--font-heading);font-weight:800;font-size:3.5rem;background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-1px}.nav-bar{display:inline-flex;background:var(--glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:.5rem;border-radius:100px;border:1px solid var(--glass-border);box-shadow:var(--shadow-md);margin:0 auto 3rem;left:50%;transform:translate(-50%);position:relative;gap:.5rem}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1.75rem;border-radius:100px;border:none;background:transparent;color:var(--primary-light);font-weight:600;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1)}.nav-item:hover{background:#ffffff80;color:var(--primary)}.nav-item.active{background:var(--primary);color:#fff;box-shadow:var(--shadow-lg)}.playground{display:grid;grid-template-columns:280px 1fr;gap:1.5rem;height:calc(100vh - 250px);max-height:800px}.wallet-section{background:var(--glass);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:2rem;border-radius:var(--radius-lg);border:1px solid var(--glass-border);box-shadow:var(--shadow-lg)}.wallet-section h2{font-family:var(--font-heading);margin-bottom:1.5rem;display:flex;align-items:center;gap:.75rem}.denominations-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.money-button{position:relative;aspect-ratio:16/10;border-radius:12px;border:1px solid rgba(0,0,0,.1);background:#fff;cursor:pointer;transition:all .2s;box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;padding:4px;overflow:hidden}.wallet-money-image{width:100%;height:100%;object-fit:contain;transition:transform .2s}.money-button.coin{aspect-ratio:1;border-radius:50%}.money-button-label{position:absolute;bottom:0;right:0;background:#0009;color:#fff;font-size:.65rem;padding:2px 4px;border-radius:4px 0 0;font-weight:700}.money-button.bill{background:#f0fdf4;color:#166534;border-color:#bbf7d0}.money-button.coin{aspect-ratio:1;border-radius:50%;background:#fffbeb;color:#92400e;border-color:#fde68a}.money-button:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-lg)}.main-area{display:flex;flex-direction:column;gap:2rem}.task-banner{background:var(--primary);color:#fff;padding:1.25rem 2rem;border-radius:var(--radius-lg);display:flex;flex-direction:column;align-items:center;text-align:center;gap:.75rem;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;width:100%}.task-title{margin:.25rem 0;font-size:1.25rem}.task-tag{text-transform:uppercase;font-size:1.1rem;letter-spacing:2px;font-weight:800;color:var(--accent);opacity:1;margin-bottom:.25rem}.task-status{display:flex;align-items:center;justify-content:center;gap:2rem;border-top:1px solid rgba(255,255,255,.1);padding-top:.75rem;width:100%}.task-banner:after{content:"";position:absolute;top:0;right:0;width:200px;height:200px;background:radial-gradient(circle,var(--accent) 0%,transparent 70%);opacity:.2;filter:blur(40px)}.target-price{font-family:var(--font-heading);font-size:1.5rem;font-weight:800;display:inline-block;color:var(--accent);margin-left:.5rem}.current-total{font-size:1.1rem;font-weight:600;opacity:.9}.table-section{background:#fff;flex:1;min-height:300px;border-radius:var(--radius-lg);border:2px dashed #e2e8f0;padding:1.5rem;display:flex;flex-wrap:wrap;gap:1.5rem;align-content:flex-start;position:relative;box-shadow:inset 0 2px 4px #0000000f;overflow-y:auto}.money-item{position:relative;cursor:grab;z-index:1}.money-image{height:auto;filter:drop-shadow(0 10px 15px rgba(0,0,0,.2));transition:filter .2s}.money-item:hover .money-image{filter:drop-shadow(0 20px 25px rgba(0,0,0,.25))}.money-label{background:var(--primary);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:700;position:absolute;top:-10px;left:50%;transform:translate(-50%);opacity:0;transition:opacity .2s}.money-item:hover .money-label{opacity:1}.money-item.bill .money-image{width:75px}.money-item.coin .money-image{width:35px}.success-badge{background:var(--accent);color:#fff;padding:.5rem 1rem;border-radius:100px;font-size:1rem;font-weight:700;margin-left:1rem;display:inline-flex;align-items:center;gap:.5rem;box-shadow:0 0 20px #10b98166}.next-button{background:#fff;color:var(--primary);border:none;padding:.75rem 1.5rem;border-radius:100px;font-weight:800;cursor:pointer;box-shadow:var(--shadow-md);transition:all .2s}.next-button:hover{background:var(--accent);color:#fff;transform:scale(1.05)}.arithmetic-card{background:var(--glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:3rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--glass-border);position:relative;max-width:800px;margin:0 auto}.arithmetic-display{display:flex;align-items:center;justify-content:center;gap:1.5rem;margin-bottom:3rem;flex-wrap:wrap}.display-card{background:#fff;padding:1.5rem 2rem;border-radius:20px;box-shadow:var(--shadow-md);display:flex;flex-direction:column;align-items:center;min-width:160px;border:2px solid transparent}.display-card.primary-card{background:#f8fafc}.display-card.result-card{border:4px dashed #cbd5e1;min-width:200px}.display-card.result-card.correct{background:#ecfdf5;border:4px solid var(--accent);color:#065f46}.display-card.result-card.wrong{background:#fef2f2;border:4px solid var(--error);color:#991b1b}.card-label{font-size:.75rem;text-transform:uppercase;font-weight:800;color:#64748b;margin-bottom:.5rem;letter-spacing:1px}.card-value{font-family:var(--font-heading);font-size:2.5rem;font-weight:800}.operator-display{font-family:var(--font-heading);font-size:3rem;font-weight:800;color:#cbd5e1}.numpad-section{display:flex;flex-direction:column;align-items:center;gap:2rem}.numpad-grid{display:grid;grid-template-columns:repeat(3,80px);gap:1rem}.num-btn{width:80px;height:80px;border-radius:20px;border:none;background:#fff;font-family:var(--font-heading);font-size:1.75rem;font-weight:700;color:var(--primary);cursor:pointer;box-shadow:0 4px #e2e8f0;transition:all .1s;display:flex;align-items:center;justify-content:center}.num-btn:active:not(:disabled){transform:translateY(4px);box-shadow:0 0 #e2e8f0}.num-btn:hover:not(:disabled){background:#f1f5f9}.num-btn.action.delete{background:#fef2f2;color:var(--error);box-shadow:0 4px #fee2e2}.numpad-actions{display:flex;gap:1rem;width:100%;max-width:320px}.action-btn{flex:1;padding:1.25rem;border-radius:20px;border:none;font-weight:800;font-size:1.1rem;cursor:pointer;transition:all .2s;box-shadow:var(--shadow-md)}.action-btn.primary{background:var(--primary);color:#fff}.action-btn.secondary{background:#f1f5f9;color:#475569}.action-btn.success{background:var(--accent);color:#fff;box-shadow:0 0 20px #10b98166}.action-btn.error{background:var(--error);color:#fff}.action-btn:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.1)}.action-btn:active:not(:disabled){transform:translateY(0)}.action-btn:disabled{opacity:.5;cursor:not-allowed}.refresh-task{position:absolute;top:1.5rem;right:1.5rem;background:transparent;border:none;color:#94a3b8;cursor:pointer;transition:all .2s}.refresh-task:hover{color:var(--primary);transform:rotate(180deg)}.ai-card{background:#fff;padding:3.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border-top:6px solid #6366f1}.ai-header{display:flex;align-items:center;gap:1.25rem;margin-bottom:2.5rem}.ai-icon-bg{background:#eef2ff;width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #6366f11a}.ai-title-group h3{font-family:var(--font-heading);font-size:1.5rem;font-weight:800;color:var(--primary);margin:0}.ai-subtitle{font-size:.875rem;color:#64748b;font-weight:500}.ai-intro-card{background:#fff;padding:4rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;max-width:800px;margin:0 auto}.ai-intro-header{margin-bottom:3rem;display:flex;flex-direction:column;align-items:center;gap:1rem}.ai-icon-bg.large{width:80px;height:80px;border-radius:20px;margin-bottom:.5rem}.ai-intro-header h2{font-family:var(--font-heading);font-size:2.5rem;font-weight:800;color:var(--primary)}.ai-intro-header p{color:#64748b;font-size:1.1rem}.difficulty-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.diff-card{padding:2rem 1.5rem;border-radius:20px;border:2px solid #f1f5f9;background:#fff;cursor:pointer;transition:all .2s;display:flex;flex-direction:column;gap:.5rem}.diff-card:hover{transform:translateY(-4px);border-color:#cbd5e1;box-shadow:var(--shadow-md)}.diff-card.easy:hover{border-color:#10b981}.diff-card.medium:hover{border-color:#f59e0b}.diff-card.hard:hover{border-color:#ef4444}.diff-card .diff-label{font-size:1.25rem;font-weight:800;color:var(--primary)}.diff-card .diff-desc{font-size:.875rem;color:#64748b}.difficulty-selector{display:flex;gap:.5rem;margin-top:.5rem}.diff-btn{padding:4px 12px;border-radius:100px;font-size:.75rem;font-weight:700;border:1px solid #e2e8f0;background:#fff;color:#64748b;cursor:pointer;transition:all .2s}.diff-btn.active{color:#fff;border-color:transparent;box-shadow:var(--shadow-sm)}.diff-btn.easy.active{background:#10b981}.diff-btn.medium.active{background:#f59e0b}.diff-btn.hard.active{background:#ef4444}.diff-btn:hover:not(.active){background:#f8fafc;border-color:#cbd5e1}.ai-story{font-size:1.25rem;line-height:1.8;margin-bottom:2.5rem;color:#334155;background:#f8fafc;padding:2.5rem;border-radius:20px;border:1px solid #f1f5f9;box-shadow:var(--shadow-sm);position:relative}.ai-story:before{content:'"';position:absolute;top:10px;left:20px;font-size:4rem;color:#e2e8f0;font-family:serif}.ai-interaction{display:flex;gap:1rem;align-items:center}.input-wrapper{position:relative;flex:1}.ai-input{width:100%;padding:1.25rem 3.5rem 1.25rem 1.5rem;font-size:1.25rem;font-weight:600;border:2px solid #f1f5f9;border-radius:var(--radius-md);background:#fff;transition:all .2s}.ai-input:focus{border-color:#6366f1;outline:none;box-shadow:0 0 0 4px #6366f11a}.currency-unit{position:absolute;right:1.5rem;top:50%;transform:translateY(-50%);font-weight:800;color:#94a3b8;font-size:1.25rem}.ai-submit-button{background:#6366f1;color:#fff;border:none;width:60px;height:60px;border-radius:var(--radius-md);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;box-shadow:0 4px 12px #6366f14d}.ai-submit-button:hover:not(:disabled){transform:translateY(-2px);background:#4f46e5;box-shadow:0 8px 20px #6366f166}.ai-feedback{margin-top:2rem;padding:1.5rem;border-radius:var(--radius-md);font-weight:700;display:flex;align-items:center;gap:1rem}.ai-feedback.correct{background:#ecfdf5;color:#059669}.ai-feedback.wrong{background:#fef2f2;color:#dc2626}.ai-actions-bottom{margin-top:1.5rem;display:flex;justify-content:flex-end}.next-ai-btn{background:var(--primary);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:700;cursor:pointer;box-shadow:var(--shadow-md);transition:all .2s;display:inline-flex;align-items:center;gap:.5rem}.next-ai-btn:hover:not(:disabled){background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.next-ai-btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}.ai-card.has-image{padding:0;overflow:hidden;max-width:1100px;width:95vw}.ai-content-layout{display:grid;grid-template-columns:1fr 400px;min-height:550px}.ai-main-text{padding:2.5rem;display:flex;flex-direction:column;gap:1.5rem;justify-content:center}.ai-image-section{background:#f8fafc;border-left:1px solid #f1f5f9;display:flex;align-items:center;justify-content:center;padding:1.5rem;position:relative;overflow:hidden}.ai-comic-frame{width:100%;aspect-ratio:1;border-radius:24px;background:#fff;box-shadow:0 10px 25px -5px #0000001a;border:8px solid white;position:relative;overflow:hidden}.ai-comic-img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .8s ease-out;position:relative;z-index:2}.ai-img-loading{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:#f1f5f9;color:#94a3b8;z-index:1}@media(max-width:900px){.ai-content-layout{grid-template-columns:1fr}.ai-image-section{border-left:none;border-top:1px solid #f1f5f9;order:-1;padding:1rem}.ai-comic-frame{aspect-ratio:16/9;max-height:250px}}