*{box-sizing:border-box}.checkout-nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--bg-dark);border-bottom:1px solid var(--border-muted);min-height:5rem;display:flex;align-items:center;justify-content:space-between;padding:0 2rem;color:var(--text-muted)}.checkout-nav-left{display:flex;align-items:center;gap:1rem}.checkout-nav-center{font-size:1.5rem;font-weight:700;color:var(--text)}.checkout-nav-right{display:flex;align-items:center;gap:1rem}.checkout-continue-btn{color:var(--text-muted);text-decoration:none;font-size:.875rem;font-weight:500;transition:color .2s ease}.checkout-continue-btn:hover{color:var(--text)}.checkout-body{padding-top:5rem;min-height:100vh;background:var(--bg-dark)}.checkout-container{max-width:1200px;margin:0 auto;padding:2rem;display:grid;grid-template-columns:1fr 1fr;gap:3rem}.checkout-form{background:var(--bg-light);padding:2rem;border-radius:8px;border:1px solid var(--border-muted)}.checkout-form h2{margin:0 0 1.5rem;font-size:1.25rem;font-weight:600;color:var(--text)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-size:.875rem;font-weight:500;color:var(--text)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:4px;background:var(--bg-dark);color:var(--text);font-size:.875rem;transition:border-color .2s ease;box-sizing:border-box}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.checkout-summary{background:var(--bg-light);padding:2rem;border-radius:8px;border:1px solid var(--border-muted);height:fit-content}.checkout-summary h2{margin:0 0 1.5rem;font-size:1.25rem;font-weight:600;color:var(--text)}.summary-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;border-bottom:1px solid var(--border-muted)}.summary-item:last-child{border-bottom:none}.summary-item img{width:60px;height:60px;object-fit:cover;border-radius:4px}.summary-item-info{flex:1;margin-left:1rem}.summary-item-name{font-weight:500;color:var(--text);margin-bottom:.25rem}.summary-item-size{font-size:.75rem;color:var(--text-muted);margin-bottom:.25rem}.summary-item-quantity{font-size:.75rem;color:var(--text-muted)}.summary-item-price{font-weight:600;color:var(--text)}.summary-total{margin-top:1rem;padding-top:1rem;border-top:2px solid var(--border);display:flex;justify-content:space-between;align-items:center;font-size:1.125rem;font-weight:700;color:var(--text)}.payment-section{margin-top:2rem;padding-top:2rem;border-top:1px solid var(--border-muted)}.payment-method{display:flex;align-items:center;gap:.5rem;padding:1rem;border:1px solid var(--border);border-radius:4px;margin-bottom:1rem;cursor:pointer;transition:border-color .2s ease}.payment-method:hover{border-color:var(--primary)}.payment-method input[type=radio]{margin:0;width:auto}.payment-method label{margin:0;cursor:pointer;flex:1}.checkout-button{width:100%;padding:1rem;background:var(--bg-dark);color:var(--text);border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s ease;margin-top:1rem;box-sizing:border-box}.checkout-button:disabled{background:var(--highlight);cursor:not-allowed}@media(max-width:768px){.checkout-container{grid-template-columns:1fr;gap:2rem;padding:1rem}.checkout-nav{padding:0 1rem}.checkout-nav-center{font-size:1.25rem}.form-row{grid-template-columns:1fr}}.error{color:var(--danger);font-size:.875rem;font-weight:500;margin-top:.5rem}