.tool-header{display:flex;align-items:center;justify-content:space-between;padding:16px;background-color:var(--color-accent);color:#fff}.back-link{display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;transition:var(--transition)}.back-link:hover{color:#fffc}.tool-title{font-size:18px;font-weight:600;margin:0}.share-button{display:flex;align-items:center;justify-content:center;background:none;border:none;color:#fff;cursor:pointer;padding:4px;border-radius:50%;transition:var(--transition)}.share-button:hover{color:#fffc;background-color:#ffffff1a}.qr-result{display:flex;flex-direction:column;align-items:center;gap:16px;margin-top:16px}.qr-code-container{background-color:var(--color-surface);padding:16px;border-radius:8px;box-shadow:var(--shadow-xs);display:flex;justify-content:center;align-items:center;min-height:200px;min-width:200px}.qr-actions{display:flex;gap:12px;margin-top:8px}#size-value{margin-left:12px;font-size:14px;color:var(--text-color-light)}.error-message{color:#e74c3c;font-size:14px;text-align:center;padding:16px;background-color:#e74c3c1a;border-radius:8px;border:1px solid rgba(231,76,60,.3);width:100%;box-sizing:border-box}.error-message p{margin:8px 0}.error-message p:first-child{font-weight:700}.loading-indicator{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:16px}.loading-spinner{width:40px;height:40px;border:4px solid rgba(0,0,0,.1);border-radius:50%;border-top-color:var(--color-accent);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:768px){.tool-title{font-size:20px}.qr-result{flex-direction:row;justify-content:center;align-items:center}.qr-actions{flex-direction:column;margin-top:0}}