:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh;background:#f5f7fa}#root{width:100%}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:#f5f7fa;color:#333}.app{max-width:900px;margin:0 auto;padding:20px;min-height:100vh}.bill-tabs{display:flex;gap:4px;margin-bottom:12px;overflow-x:auto;padding-bottom:4px}.bill-tab{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#fff;border:1px solid #ddd;border-radius:8px 8px 0 0;cursor:pointer;min-width:100px;max-width:150px;transition:all .2s}.bill-tab:hover{background:#f0f4f8}.bill-tab.active{background:#4a90d9;color:#fff;border-color:#4a90d9}.tab-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:500}.tab-close{width:18px;height:18px;border:none;background:transparent;color:inherit;opacity:.6;cursor:pointer;border-radius:50%;font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center}.tab-close:hover{opacity:1;background:#0000001a}.bill-tab.active .tab-close:hover{background:#fff3}.add-bill-btn{width:36px;height:36px;border:2px dashed #ccc;background:transparent;color:#888;font-size:20px;border-radius:8px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.add-bill-btn:hover{border-color:#4a90d9;color:#4a90d9;background:#f0f8ff}.header{position:relative;display:flex;align-items:center;justify-content:center;margin-bottom:16px}.header h1{font-size:24px;color:#2c3e50;font-weight:600;text-align:center}.party-details{background:#fff;padding:16px;border-radius:8px;box-shadow:0 2px 8px #00000014;margin-bottom:20px}.party-row{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px;margin-bottom:12px}.party-details input{padding:10px 14px;border:1px solid #ddd;border-radius:6px;font-size:14px;transition:border-color .2s,box-shadow .2s}.party-details input:focus{outline:none;border-color:#4a90d9;box-shadow:0 0 0 3px #4a90d91a}.party-details input.full-width{width:100%}.billing-table{background:#fff;border-radius:8px;box-shadow:0 2px 8px #00000014;overflow:hidden;margin-bottom:20px}table{width:100%;border-collapse:collapse}thead{background:#4a90d9;color:#fff}th{padding:12px 8px;text-align:left;font-weight:500;font-size:13px;text-transform:uppercase;letter-spacing:.5px}td{padding:8px;border-bottom:1px solid #eee;vertical-align:middle}tbody tr:hover{background:#f8fafc}tbody tr.empty-row{background:#fafbfc}.sr-col{width:50px;text-align:center}.desc-col{width:30%}.amount-col{width:20%}.qty-col{width:80px}.total-col{width:20%;font-weight:500}.action-col{width:40px;text-align:center}tbody input{width:100%;padding:8px 10px;border:1px solid transparent;border-radius:4px;font-size:14px;background:transparent;transition:all .2s}tbody input:hover{border-color:#ddd;background:#fff}tbody input:focus{outline:none;border-color:#4a90d9;background:#fff;box-shadow:0 0 0 2px #4a90d926}tbody input[type=number]{text-align:right;-moz-appearance:textfield}tbody input[type=number]::-webkit-outer-spin-button,tbody input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.desc-col input{color:#666}.desc-col input::placeholder{color:#aaa;font-style:italic}.delete-btn{width:28px;height:28px;border:none;background:transparent;color:#ccc;font-size:20px;cursor:pointer;border-radius:4px;transition:all .2s;line-height:1}.delete-btn:hover{background:#fee;color:#e74c3c}tfoot td{padding:14px 8px;background:#f8fafc;border-top:2px solid #4a90d9}.grand-total-label{text-align:right;font-weight:600;font-size:15px;color:#2c3e50}.grand-total-value{font-weight:700;font-size:18px;color:#27ae60}.actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:8px}.btn:active{transform:scale(.98)}.btn-primary{background:#4a90d9;color:#fff}.btn-primary:hover{background:#3a7fc8}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268}.btn-success{background:#25d366;color:#fff}.btn-success:hover{background:#1fb855}.btn-danger{background:#e74c3c;color:#fff}.btn-danger:hover{background:#c0392b}.footer{margin-top:20px;text-align:center}.footer p{color:#888;font-size:13px;background:#f0f0f0;display:inline-block;padding:8px 16px;border-radius:20px}tbody tr.active-row{background:#e8f4fc}tbody input.input-active{border-color:#4a90d9;background:#fff;box-shadow:0 0 0 2px #4a90d933}.party-toggle-btn{width:32px;height:32px;border:1px solid #4a90d9;background:#fff;border-radius:8px;cursor:pointer;font-size:16px;font-weight:600;font-style:italic;color:#4a90d9;display:flex;align-items:center;justify-content:center;margin-left:auto}.party-toggle-btn.active{background:#4a90d9;border-color:#4a90d9;color:#fff;font-style:normal}.party-details.hidden-mobile{display:none}.party-done-btn{width:100%;padding:10px;margin-top:8px;border:none;background:#4a90d9;color:#fff;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer}.keypad{position:fixed;bottom:0;left:0;right:0;background:#f8f9fa;padding:12px;box-shadow:0 -4px 20px #00000026;z-index:100}.keypad-display{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:#fff;border-radius:8px;margin-bottom:10px;border:2px solid #4a90d9}.keypad-display-left{display:flex;flex-direction:column;gap:2px}.keypad-display-right{display:flex;align-items:center;gap:10px}.keypad-label{font-size:12px;color:#666;font-weight:500}.keypad-preview{font-size:13px;color:#27ae60;font-weight:600}.keypad-value{font-size:26px;font-weight:700;color:#2c3e50;font-family:monospace}.keypad-backspace{width:44px;height:44px;border:none;background:#fee;color:#e74c3c;font-size:22px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center}.keypad-backspace:active{background:#fdd}.keypad-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.keypad-grid-new{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.keypad-btn{padding:16px;font-size:22px;font-weight:600;border:none;border-radius:10px;background:#fff;color:#333;cursor:pointer;transition:all .1s;box-shadow:0 2px 4px #0000001a;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.keypad-btn:active{transform:scale(.95);background:#e8e8e8}.keypad-multiply{background:#fff3cd;color:#856404;font-size:24px}.keypad-multiply:active{background:#ffeeba}.keypad-add{grid-column:span 3;background:#27ae60;color:#fff;font-size:18px;padding:14px}.keypad-add:active{background:#219a52}.keypad-delete{background:#fee;color:#e74c3c}.keypad-delete:active{background:#fdd}.keypad-enter{grid-column:span 3;background:#4a90d9;color:#fff;font-size:18px}.keypad-enter:active{background:#3a7fc8}.keypad-toggle{width:100%;padding:10px;border:none;background:#4a90d9;color:#fff;font-size:14px;font-weight:500;cursor:pointer;margin-bottom:8px;border-radius:8px}.keypad-toggle:active{background:#3a7fc8}.keypad-closed{padding:8px 12px}.keypad-closed .keypad-toggle{margin-bottom:0}.keypad-disabled{opacity:.3;cursor:not-allowed}.keypad-disabled:active{transform:none;background:#fff}.settings-btn{position:absolute;right:0;width:36px;height:36px;border:1px solid #ddd;background:#fff;border-radius:8px;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.settings-btn:hover{background:#f0f4f8;border-color:#4a90d9}.btn-preview{background:#9b59b6;color:#fff}.btn-preview:hover{background:#8e44ad}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal{background:#fff;border-radius:12px;width:100%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:0 10px 40px #0003}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #eee}.modal-header h2{font-size:18px;color:#2c3e50;margin:0}.modal-close{width:32px;height:32px;border:none;background:transparent;font-size:24px;color:#999;cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center}.modal-close:hover{background:#f0f0f0;color:#333}.modal-body{padding:20px}.modal-footer{padding:16px 20px;border-top:1px solid #eee;display:flex;justify-content:flex-end}.settings-logo-section{margin-bottom:20px}.settings-logo-section>label{display:block;font-weight:500;margin-bottom:8px;color:#333}.logo-preview{display:flex;align-items:center;gap:15px}.logo-preview img{width:80px;height:80px;object-fit:contain;border:1px solid #ddd;border-radius:8px;padding:5px}.remove-logo-btn{padding:8px 16px;border:1px solid #e74c3c;background:#fff;color:#e74c3c;border-radius:6px;cursor:pointer;font-size:13px}.remove-logo-btn:hover{background:#fee}.logo-upload input[type=file]{display:none}.upload-btn{display:inline-block;padding:12px 20px;background:#f0f4f8;border:2px dashed #ccc;border-radius:8px;cursor:pointer;font-size:14px;color:#666;text-align:center;transition:all .2s}.upload-btn:hover{border-color:#4a90d9;color:#4a90d9}.settings-field{margin-bottom:16px}.settings-field label{display:block;font-weight:500;margin-bottom:6px;color:#333;font-size:14px}.settings-field input{width:100%;padding:10px 14px;border:1px solid #ddd;border-radius:6px;font-size:14px}.settings-field input:focus{outline:none;border-color:#4a90d9;box-shadow:0 0 0 3px #4a90d91a}.settings-field select{width:100%;padding:10px 14px;border:1px solid #ddd;border-radius:6px;font-size:14px;background:#fff;cursor:pointer}.settings-field select:focus{outline:none;border-color:#4a90d9;box-shadow:0 0 0 3px #4a90d91a}.preview-modal{max-width:800px;max-height:95vh}.preview-header{display:flex;gap:10px;justify-content:flex-end;padding:12px 16px;background:#f8f9fa;border-bottom:1px solid #eee}.preview-content{padding:0;background:#fff;max-height:calc(95vh - 70px);overflow-y:auto}.preview-content iframe{width:100%;height:100%;border:none}@media(max-width:768px){.app{padding:8px 8px 60px}.app.keypad-visible{padding-bottom:350px}.app.keypad-visible .header{margin-bottom:4px}.app.keypad-visible .header h1{font-size:14px}.app.keypad-visible .party-details{display:none}.bill-tabs{margin-bottom:6px}.bill-tab{padding:5px 8px;min-width:70px;max-width:100px}.tab-name{font-size:11px}.add-bill-btn{width:28px;height:28px;font-size:16px}.party-row{grid-template-columns:1fr}.header h1{font-size:18px}.header{margin-bottom:6px}.party-details{padding:8px;margin-bottom:8px}.party-details input{padding:8px 10px;font-size:14px}th,td{padding:6px 3px;font-size:12px}.sr-col{width:28px}.desc-col{width:22%}.desc-col input{padding:6px 4px;font-size:11px}.amount-col{width:22%}.qty-col{width:45px}.total-col{width:22%;font-size:11px}.action-col{width:28px}.delete-btn{width:22px;height:22px;font-size:14px}.btn{padding:8px 10px;font-size:12px}.actions{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;margin-bottom:8px}.actions .btn{justify-content:center;padding:8px 2px;font-size:11px}.settings-btn{width:28px;height:28px;font-size:16px;z-index:10}.party-toggle-btn{z-index:10}.modal-overlay{padding:10px}.modal{max-height:85vh}.preview-modal{max-height:90vh}.preview-header{padding:8px 12px}.preview-header .btn{padding:8px 12px;font-size:12px}.billing-table{margin-bottom:8px;max-height:calc(100vh - 400px);overflow-y:auto}.app.keypad-visible .billing-table{max-height:calc(100vh - 380px)}tbody input{padding:6px 4px;font-size:14px}.grand-total-value{font-size:14px}tfoot td{padding:8px 4px}.grand-total-label{font-size:12px}.keypad{padding:8px}.keypad-display{padding:8px 12px;margin-bottom:8px}.keypad-value{font-size:20px}.keypad-label{font-size:12px}.keypad-grid{gap:6px}.keypad-btn{padding:14px;font-size:20px}.keypad-enter{font-size:16px;padding:12px}.keypad-toggle{padding:8px;font-size:13px}.keypad-grid-new{gap:5px}.keypad-grid-new .keypad-btn{padding:12px;font-size:18px}.keypad-add{font-size:15px;padding:10px}.keypad-backspace{width:38px;height:38px;font-size:18px}.keypad-preview{font-size:12px}}