*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f8f9fa;color:#212529;line-height:1.6}#root{min-height:100vh;display:flex;flex-direction:column}.container{max-width:1200px;margin:0 auto;padding:0 20px}.card{background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;padding:2rem;margin:1rem 0}.btn{background:#007bff;color:#fff;border:none;padding:12px 24px;border-radius:6px;font-size:16px;font-weight:500;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px}.btn:hover{background:#0056b3;transform:translateY(-1px)}.btn:disabled{background:#6c757d;cursor:not-allowed;transform:none}.btn-secondary{background:#6c757d}.btn-secondary:hover{background:#545b62}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:#495057}.form-control{width:100%;padding:12px;border:2px solid #e9ecef;border-radius:6px;font-size:16px;transition:border-color .2s ease}.form-control:focus{outline:none;border-color:#007bff}.checkbox-group{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:.5rem}.checkbox-item{display:flex;align-items:center;gap:8px;padding:12px;border:2px solid #e9ecef;border-radius:6px;cursor:pointer;transition:all .2s ease}.checkbox-item:hover{border-color:#007bff;background-color:#f8f9ff}.checkbox-item input[type=checkbox]{width:18px;height:18px;cursor:pointer}.checkbox-item.checked{border-color:#007bff;background-color:#e7f3ff}.step-indicator{display:flex;justify-content:center;margin-bottom:2rem}.step{display:flex;align-items:center;gap:8px;padding:8px 16px;border-radius:20px;background:#e9ecef;color:#6c757d;font-weight:500}.step.active{background:#007bff;color:#fff}.step.completed{background:#28a745;color:#fff}.step-number{width:24px;height:24px;border-radius:50%;background:currentColor;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem;margin-top:2rem}.result-card{background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;padding:1.5rem;border-left:4px solid #007bff}.result-card h3{color:#007bff;margin-bottom:1rem;font-size:1.2rem}.result-list{list-style:none}.result-list li{padding:8px 0;border-bottom:1px solid #e9ecef;display:flex;align-items:center;gap:8px}.result-list li:last-child{border-bottom:none}.result-list li:before{content:"✓";color:#28a745;font-weight:700;width:20px}.header{background:#007bff;color:#fff;padding:2rem 0;text-align:center}.header h1{font-size:2.5rem;margin-bottom:.5rem;font-weight:700}.header p{font-size:1.2rem;opacity:.9}.btn{font-size:18px;padding:14px 28px;min-height:48px}.form-control{font-size:18px;padding:14px;min-height:48px}.checkbox-item{font-size:16px;padding:16px;min-height:60px}.bag-packing-game{max-width:1200px;margin:0 auto}.game-header{background:linear-gradient(135deg,#007bff,#0056b3);color:#fff;padding:2rem;border-radius:12px;margin-bottom:2rem}.progress-container{display:flex;flex-direction:column;gap:1rem}.progress-item{background:#ffffff1a;padding:1rem;border-radius:8px}.progress-bar{width:100%;height:8px;background:#fff3;border-radius:4px;overflow:hidden}.progress-fill{height:100%;transition:width .3s ease;border-radius:4px}.item-card{transition:all .2s ease;border:2px solid #e9ecef!important}.item-card:hover{border-color:#007bff!important;transform:translateY(-2px);box-shadow:0 4px 12px #007bff26}.item-card.selected{border-color:#007bff!important;background-color:#e7f3ff!important;box-shadow:0 4px 12px #007bff33}.item-card.packed{border-color:#28a745!important;background-color:#f8fff8!important;box-shadow:0 4px 12px #28a74533}.packed-item{transition:all .2s ease}.packed-item:hover{transform:translateY(-1px);box-shadow:0 2px 8px #28a74526}.items-grid,.packed-grid{border:2px dashed #e9ecef;border-radius:8px;padding:1rem;min-height:200px}.game-content{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.feedback{background:#f8f9fa;border-left:4px solid #007bff;padding:1rem;border-radius:8px}.feedback h4{margin:0 0 1rem;color:#007bff}.feedback ul{margin:0;padding-left:1.5rem}.feedback li{margin-bottom:.5rem;color:#6c757d}.game-mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;margin:2rem 0}.game-mode-card{padding:2rem;border:2px solid #e9ecef;border-radius:12px;text-align:center;cursor:pointer;transition:all .2s ease;background:#fff}.game-mode-card:hover{border-color:#007bff;transform:translateY(-4px);box-shadow:0 8px 25px #007bff26}.game-mode-card.selected{border-color:#007bff;background:#e7f3ff;box-shadow:0 8px 25px #007bff33}.game-mode-icon{font-size:3rem;margin-bottom:1rem}.game-mode-title{font-size:1.2rem;font-weight:700;margin-bottom:.5rem;color:#007bff}.game-mode-description{color:#6c757d;margin-bottom:1rem}.game-mode-constraints{font-size:.9rem;color:#6c757d;text-align:left}.constraint-item{display:flex;justify-content:space-between;margin-bottom:.25rem}@media (max-width: 768px){.container{padding:0 15px}.card{padding:1.5rem}.header h1{font-size:2rem}.checkbox-group,.results-grid,.game-content,.game-mode-grid{grid-template-columns:1fr}.progress-container{gap:.5rem}.progress-item{padding:.75rem}}