*{box-sizing:border-box;margin:0;padding:0;font-family:Arial,sans-serif}body,html{height:100%;margin:0}body{background-color:#fff;color:#333;line-height:1.6;display:flex;flex-direction:column}a{text-decoration:none;color:#000}main{flex:1 1}.container{max-width:800px;margin:0 auto;padding:20px}h1{text-align:center;margin-bottom:30px;font-weight:700}h1,h2{color:#000}h2{margin-bottom:15px;font-size:1.3rem;padding-bottom:5px}.app-container{width:100%;max-width:1600px;background-color:#fff;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.1);padding:30px;margin:0 auto}.form-section{margin-bottom:30px;padding-bottom:20px}.form-row{display:flex;flex-wrap:wrap;gap:20px}.form-group{flex-grow:1;flex-shrink:1;flex-basis:calc(50% - 20px);min-width:250px;margin-bottom:15px}label{display:block;margin-bottom:5px;font-weight:600;color:#333}input,select,textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:1rem;transition:border-color .3s,box-shadow 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#000;font-family:Arial,sans-serif;color:#000;position:relative}.invoice-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px}.invoice-title{color:#000;font-size:32px;margin:0;font-weight:700;text-transform:uppercase}.invoice-number{font-size:18px;color:#000;font-weight:600;text-align:right}hr{border:none;border-top:1px solid #000;margin:20px 0}.invoice-details{display:flex;justify-content:space-between;margin-bottom:40px}.invoice-section{flex:1 1;margin-right:20px}.invoice-section:last-child{margin-right:0}.invoice-section h3{color:#000;font-size:18px;margin:0 0 10px;border-bottom:1px solid #000;padding-bottom:5px;text-transform:uppercase}.invoice-section p{margin-bottom:5px;color:#000}.payment-boxes{display:flex;justify-content:space-between;margin:20px 0}.payment-box{flex:1 1;border:1px solid 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label[for=internationalPaymentCheckbox]{display:inline;font-weight:600;color:#333}.btn.ares{margin-top:5px}.btn.add-item{margin-top:10px}.btn.remove-item{background-color:#dc3545;color:#fff;padding:5px 10px;font-size:1.2rem;line-height:1}.btn.remove-item:hover{background-color:#c82333}@media print{body *{visibility:hidden}.invoice-preview,.invoice-preview *{visibility:visible}.invoice-preview{position:absolute;left:0;top:0;width:100%;height:100%;padding:0;margin:0;background:#fff}.invoice{border:none;padding:20px}.invoice-actions{display:none}.invoice-footer{display:block!important}}@media screen and (max-width:768px){.hero{flex-direction:column;text-align:center}.hero-content{padding-right:0;margin-bottom:40px}.nav-links{position:absolute;right:0;height:92vh;top:8vh;background-color:#fff;display:flex;flex-direction:column;align-items:center;width:50%;transform:translateX(100%);transition:transform .5s ease-in;box-shadow:-5px 0 10px rgba(0,0,0,.1)}.nav-links li{opacity:0;margin:20px 0}.burger{display:block}.nav-active{transform:translateX(0)}.app-container{width:95%}.form-row{flex-direction:column}.form-group{flex:1 1 100%}.payment-boxes{flex-direction:column}.payment-box{margin-right:0;margin-bottom:10px}}@keyframes navLinkFade{0%{opacity:0;transform:translateX(50px)}to{opacity:1;transform:translateX(0)}}.toggle .line1{transform:rotate(-45deg) translate(-5px,6px)}.toggle .line2{opacity:0}.toggle .line3{transform:rotate(45deg) translate(-5px,-6px)}