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#ddd;border-radius:50px;background:#fff;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .2s ease;font-family:inherit}.nav-tab:hover{transform:scale(1.05)}.nav-tab.active{border-color:#4d96ff;background:#4d96ff;color:#fff;box-shadow:0 4px 12px #4d96ff4d}.main-content{flex:1;padding:1.5rem;max-width:1000px;width:100%;margin:0 auto}.color-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:1rem;margin-top:1rem}.color-card{border-radius:1.2rem;padding:1rem;text-align:center;cursor:pointer;transition:all .25s ease;border:4px solid transparent;position:relative;overflow:hidden}.color-card:hover{transform:translateY(-4px) scale(1.03);box-shadow:0 8px 25px #00000026}.color-card.selected{border-color:#333;transform:scale(1.05);box-shadow:0 8px 30px #0003}.color-card .emoji{font-size:2.5rem;display:block;margin-bottom:.3rem}.color-card .color-name{font-size:1.1rem;font-weight:800;text-shadow:1px 1px 2px rgba(0,0,0,.1)}.color-card 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#eee}.quiz-question{font-size:1.4rem;font-weight:700;margin-bottom:.5rem}.quiz-sub{color:#777;margin-bottom:1.5rem;font-size:1rem}.quiz-options{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;max-width:500px;margin:0 auto}.quiz-option{padding:1.2rem;border-radius:1rem;border:4px solid transparent;cursor:pointer;font-size:1.2rem;font-weight:700;font-family:inherit;transition:all .2s ease;color:#fff;text-shadow:1px 1px 2px rgba(0,0,0,.2)}.quiz-option:hover{transform:scale(1.05);box-shadow:0 6px 20px #00000026}.quiz-option.correct{border-color:#2ecc71;box-shadow:0 0 0 4px #2ecc714d;animation:pulse-correct .5s ease}.quiz-option.wrong{opacity:.5;transform:scale(.95)}@keyframes pulse-correct{0%,to{transform:scale(1.05)}50%{transform:scale(1.1)}}.quiz-result{margin-top:1.5rem;padding:1.5rem;background:#fff;border-radius:1rem;border:3px solid #ffd93d}.quiz-result h3{font-size:1.5rem;margin-bottom:.5rem}.quiz-result p{color:#666;font-size:1rem}.quiz-btn{margin-top:1.5rem;padding:.8rem 2rem;border-radius:50px;border:none;background:#4d96ff;color:#fff;font-size:1.1rem;font-weight:700;cursor:pointer;font-family:inherit;transition:all .2s ease}.quiz-btn:hover{background:#3a7bd5;transform:scale(1.05)}.paint-container{margin-top:1rem}.paint-tools{display:flex;justify-content:center;gap:.6rem;margin-bottom:1rem;flex-wrap:wrap}.paint-color-btn{width:40px;height:40px;border-radius:50%;border:4px solid white;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #00000026}.paint-color-btn:hover{transform:scale(1.15)}.paint-color-btn.active{border-color:#333;transform:scale(1.2);box-shadow:0 4px 15px #00000040}.paint-color-btn.eraser{background:#fff;border-color:#ccc;font-size:1.2rem;line-height:1}.size-btn{width:40px;height:40px;border-radius:50%;border:3px solid #ddd;background:#fff;cursor:pointer;font-size:.7rem;font-weight:700;font-family:inherit;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.size-btn.active{border-color:#4d96ff;background:#e8f0fe}.paint-canvas-wrapper{display:flex;justify-content:center}.paint-canvas{border:4px solid #eee;border-radius:1rem;cursor:crosshair;background:#fff;touch-action:none}.paint-actions{display:flex;justify-content:center;gap:.8rem;margin-top:1rem}.paint-action-btn{padding:.6rem 1.5rem;border-radius:50px;border:3px solid #ddd;background:#fff;font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;transition:all .2s ease}.paint-action-btn:hover{border-color:#4d96ff;color:#4d96ff}.mix-container{text-align:center;margin-top:1rem}.mix-slots{display:flex;justify-content:center;align-items:center;gap:1rem;margin:1.5rem 0;flex-wrap:wrap}.mix-slot{width:100px;height:100px;border-radius:50%;border:5px dashed #ccc;display:flex;align-items:center;justify-content:center;font-size:2rem;transition:all .3s ease;cursor:pointer}.mix-slot.filled{border-style:solid}.mix-slot:hover{transform:scale(1.08)}.mix-plus,.mix-equals{font-size:2.5rem;color:#aaa;font-weight:700}.mix-colors{display:flex;justify-content:center;gap:.8rem;flex-wrap:wrap;margin-bottom:1.5rem}.mix-color-btn{width:55px;height:55px;border-radius:50%;border:4px solid white;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #00000026}.mix-color-btn:hover{transform:scale(1.15)}.mix-result{margin-top:1rem;padding:1.5rem;border-radius:1rem;background:#fff;border:3px solid #eee;display:inline-block;animation:pop-in .3s ease}.mix-result .result-color{width:80px;height:80px;border-radius:50%;margin:0 auto .5rem;border:4px solid #eee}.mix-result h3{font-size:1.3rem}.mix-reset-btn{margin-top:1rem;padding:.6rem 1.5rem;border-radius:50px;border:none;background:#ff6b6b;color:#fff;font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;transition:all .2s ease}.mix-reset-btn:hover{background:#e55555;transform:scale(1.05)}.stars-container{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:1000}.star{position:absolute;font-size:2rem;animation:star-fall 1s ease-out forwards}@keyframes star-fall{0%{transform:translateY(0) scale(1) rotate(0);opacity:1}to{transform:translateY(100px) scale(0) rotate(360deg);opacity:0}}.rainbow-banner{margin-top:1.5rem;border-radius:1rem;overflow:hidden;height:60px;display:flex}.rainbow-banner div{flex:1;transition:flex .3s ease}.rainbow-banner div:hover{flex:2}.section-title{text-align:center;font-size:1.5rem;font-weight:800;margin-bottom:.5rem}.section-sub{text-align:center;color:#888;margin-bottom:1rem}@media(max-width:600px){.app-header h1{font-size:1.5rem}.color-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}.quiz-options{grid-template-columns:1fr}.main-content{padding:1rem}.nav-tab{padding:.5rem 1rem;font-size:.95rem}.mix-slots{gap:.5rem}.mix-slot{width:70px;height:70px}}