.pet-weight-calculator{max-width:1000px;margin:0 auto;padding:20px;background:linear-gradient(135deg,#1e1e1e 0%,#252525 100%);border-radius:12px;border:1px solid #444}.pet-weight-header{text-align:center;margin-bottom:20px;padding-bottom:10px;border-bottom:1px solid #444}.pet-weight-header h3{color:#ece21c;font-size:20px;margin:0}.toggle-btn{flex:1;height:36px;font-size:14px;border-radius:6px;border:1px solid #555;cursor:pointer;font-weight:700;transition:all 0.3s ease;background:#555;color:#e0e0e0}.toggle-btn:hover{background:#666;transform:translateY(-1px)}.pet-weight-result{background:#2a2a2a;padding:15px;border-radius:6px;border:1px solid #444;color:#ece21c;font-size:14px;text-align:center;min-height:60px;display:block;margin-bottom:15px;line-height:1.5}#age1TierText{font-weight:600;font-size:16px}.age-list-container{margin-top:15px}.age-list-display{display:none!important;background:#1e1e1e;padding:15px;border-radius:6px;border:1px solid #444;color:#ccc;font-size:12px;line-height:1.4;max-height:300px;overflow-y:auto;white-space:pre-wrap;font-family:'Courier New',monospace}.age-list-display.show{display:block!important}.pet-weight-calculator input[type="number"]{-moz-appearance:textfield}.pet-weight-calculator input[type="number"]::-webkit-outer-spin-button,.pet-weight-calculator input[type="number"]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}@media (max-width:900px){.pet-weight-calculator{padding:15px}.input-row{flex-direction:column;gap:15px}.input-group{min-width:auto}.input-group label{font-size:12px;min-width:120px}.input-group input{width:80px;font-size:12px;height:32px}.action-buttons{flex-direction:column}#age1TierText{font-size:14px}.pet-weight-result{font-size:12px!important}}