:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#1a1a2e;color:#fafafa;-webkit-user-select:none;user-select:none}.game-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1rem;gap:1rem}.header{text-align:center}.header h1{margin:0;font-size:1.6rem;font-weight:700;letter-spacing:-.02em;color:#f5a623}.header p{margin:.25rem 0 0;font-size:.85rem;color:#ffffff80}.stats-bar{display:flex;gap:1.5rem;justify-content:center;flex-wrap:wrap}.stat{text-align:center}.stat-label{font-size:.65rem;text-transform:uppercase;letter-spacing:.15em;color:#fff6}.stat-value{font-size:1.4rem;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.stat-value.score{color:#4ecdc4}.stat-value.timer{color:#ff6b6b}.stat-value.level{color:#f5a623}.game-area{display:flex;gap:1.5rem;align-items:flex-start;flex-wrap:wrap;justify-content:center;width:100%;max-width:900px}.order-panel{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:.75rem;padding:1rem;min-width:200px;max-width:220px}.order-panel h2{margin:0 0 .75rem;font-size:.9rem;font-weight:600;color:#f5a623;text-transform:uppercase;letter-spacing:.1em}.order-item{display:flex;align-items:center;gap:.5rem;padding:.4rem .5rem;margin-bottom:.4rem;border-radius:.4rem;font-size:.8rem;transition:opacity .3s}.order-item.packed{opacity:.35;text-decoration:line-through}.order-item .item-icon{font-size:1.1rem}.box-area{display:flex;flex-direction:column;align-items:center;gap:.75rem}.box-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.15em;color:#fff6}.packing-box{width:360px;height:360px;background:#3d2b1f;border:3px solid #5c3d2e;border-radius:.5rem;position:relative;overflow:hidden;box-shadow:inset 0 0 30px #00000080}.packing-box:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:repeating-linear-gradient(90deg,transparent,transparent 59px,rgba(255,255,255,.03) 59px,rgba(255,255,255,.03) 60px),repeating-linear-gradient(0deg,transparent,transparent 59px,rgba(255,255,255,.03) 59px,rgba(255,255,255,.03) 60px);pointer-events:none}.box-item{position:absolute;border-radius:.3rem;display:flex;align-items:center;justify-content:center;font-size:1.3rem;cursor:grab;transition:box-shadow .2s;border:2px solid rgba(255,255,255,.2)}.box-item:hover{box-shadow:0 0 12px #fff3;z-index:10}.box-item.dragging{cursor:grabbing;box-shadow:0 4px 20px #00000080;z-index:100;opacity:.85;transition:none}.items-shelf{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;max-width:380px}.shelf-item{border-radius:.3rem;display:flex;align-items:center;justify-content:center;font-size:1.3rem;cursor:grab;border:2px solid rgba(255,255,255,.15);transition:transform .15s,box-shadow .15s}.shelf-item:hover{transform:scale(1.05);box-shadow:0 2px 12px #0006}.shelf-item.dragging{cursor:grabbing;opacity:.5;transform:scale(.95)}.btn-row{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center}.btn{padding:.6rem 1.5rem;border:none;border-radius:.5rem;font-size:.85rem;font-weight:600;cursor:pointer;transition:transform .1s,opacity .2s;letter-spacing:.03em}.btn:hover{opacity:.9}.btn:active{transform:scale(.97)}.btn-primary{background:#4ecdc4;color:#1a1a2e}.btn-secondary{background:#ffffff1a;color:#fafafa;border:1px solid rgba(255,255,255,.15)}.btn-warning{background:#ff6b6b;color:#fff}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:#16213e;border:1px solid rgba(255,255,255,.1);border-radius:1rem;padding:2rem;text-align:center;max-width:360px;width:90%}.modal h2{margin:0 0 .5rem;font-size:1.4rem;color:#f5a623}.modal p{color:#ffffffa6;font-size:.9rem;margin:0 0 1.25rem}.modal .score-display{font-size:2.5rem;font-weight:700;color:#4ecdc4;margin:.5rem 0}.toast{position:fixed;top:1rem;left:50%;transform:translate(-50%);background:#4ecdc4;color:#1a1a2e;padding:.6rem 1.5rem;border-radius:2rem;font-weight:600;font-size:.85rem;z-index:500;animation:toastIn .3s ease,toastOut .3s ease 1.2s forwards}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes toastOut{0%{opacity:1}to{opacity:0}}.drop-hint{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;color:#ffffff26;font-size:.85rem;pointer-events:none}