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#f5c6cb}.submit-invoice-button{width:100%;padding:16px;margin-top:24px;background:#667eea;color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s}.submit-invoice-button:hover:not(:disabled){background:#5568d3;transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.submit-invoice-button:disabled{background:#cbd5e0;cursor:not-allowed;transform:none}@media (max-width: 768px){.invoice-form-container{padding:20px 10px}.invoice-form{padding:24px 16px}.invoice-form-header h1{font-size:24px}.form-row{grid-template-columns:1fr;gap:16px}.totals-grid{max-width:100%}}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier 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