:root{--bg: #f3f4f6;--panel: #ffffff;--border: #e5e7eb;--text: #1f2937;--muted: #6b7280;--primary: #4f46e5;--primary-ink: #ffffff;--retail: #4f46e5;--wholesale: #0891b2;--danger: #dc2626;--ok: #059669}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Malgun Gothic,sans-serif;background:var(--bg);color:var(--text)}button{font-family:inherit;cursor:pointer}input,select{font-family:inherit}a{color:var(--primary)}.app{display:flex;min-height:100vh}.sidebar{width:200px;background:#111827;color:#e5e7eb;display:flex;flex-direction:column;padding:16px 0;flex-shrink:0}.sidebar h1{font-size:18px;margin:0 20px 20px}.sidebar a{display:block;padding:12px 20px;color:#cbd5e1;text-decoration:none;font-size:15px}.sidebar a.active{background:#1f2937;color:#fff;border-left:3px solid var(--primary)}.sidebar a:hover{background:#1f2937}.store-picker{margin:4px 16px 16px}.store-picker select{width:100%;padding:6px;border-radius:6px;border:none}.store-name{background:#1f2937;color:#fff;padding:8px 10px;border-radius:6px;font-size:14px;font-weight:600}.pos-session{margin:0 16px 14px;padding:10px;background:#1f2937;border-radius:8px;font-size:13px;color:#cbd5e1}.pos-session div{margin-bottom:2px}.pos-session button{margin-top:8px;width:100%;padding:6px;border-radius:6px;border:1px solid #374151;background:#111827;color:#cbd5e1;font-size:12px;cursor:pointer}.pos-session button:hover{background:#0b1220}.main{flex:1;padding:20px 24px;overflow-y:auto}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px}.btn{padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:14px}.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn:disabled{opacity:.5;cursor:not-allowed}.input{padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:14px}table{width:100%;border-collapse:collapse}th,td{padding:10px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600}.muted{color:var(--muted)}.center{text-align:center}.err{color:var(--danger);font-size:13px}.pill{padding:2px 8px;border-radius:999px;font-size:12px}.pill.retail{background:#eef2ff;color:var(--retail)}.pill.wholesale{background:#ecfeff;color:var(--wholesale)}.pill.danger{background:#fee2e2;color:var(--danger)}.brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--text)}.brand span{color:var(--primary);letter-spacing:0}.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;background:#fff;border-bottom:1px solid var(--border)}.topbar-actions{display:flex;gap:10px;align-items:center}.landing{min-height:100vh;display:flex;flex-direction:column}.hero{text-align:center;padding:56px 24px 32px}.hero h1{font-size:34px;margin:0 0 12px}.hero p{color:var(--muted);max-width:640px;margin:0 auto;font-size:16px;line-height:1.6}.sections{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;max-width:1040px;margin:8px auto 48px;padding:0 24px;width:100%}.section-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:28px 24px;text-align:left;transition:transform .08s,box-shadow .08s,border-color .08s}.section-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #00000014;border-color:var(--primary)}.section-icon{font-size:40px}.section-title{font-size:19px;font-weight:700;margin-top:14px;display:flex;align-items:center;gap:8px}.section-desc{color:var(--muted);font-size:14px;margin-top:6px;min-height:40px}.section-go{color:var(--primary);font-weight:600;margin-top:10px;font-size:14px}.badge{background:#fef3c7;color:#92400e;font-size:11px;padding:2px 8px;border-radius:999px;font-weight:600}.landing-footer{text-align:center;padding:20px;font-size:12px;border-top:1px solid var(--border)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:32px;width:380px;max-width:92vw;box-shadow:0 10px 30px #0000000f}.auth-card h2{text-align:center;margin:12px 0 20px}.auth-card label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px}.auth-card .input{width:100%}.portal{min-height:100vh}.portal-body{max-width:880px;margin:0 auto;padding:32px 24px}.portal-head{display:flex;align-items:center;gap:16px;margin-bottom:20px}.portal-icon{font-size:48px}.portal-head h1{margin:0}.store-card{margin-bottom:24px}.portal-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}.action-tile{background:#fff;border:1px solid var(--border);border-radius:14px;padding:28px 16px;display:flex;flex-direction:column;align-items:center;gap:10px;font-size:16px;font-weight:600;transition:transform .08s,border-color .08s}.action-tile:hover{transform:translateY(-2px);border-color:var(--primary)}.action-tile.primary{background:var(--primary);color:#fff;border-color:var(--primary)}.action-icon{font-size:34px}.notice{background:#fffbeb;border:1px solid #fde68a;color:#92400e;padding:12px 16px;border-radius:10px;margin-bottom:20px}.notice.info{background:#eff6ff;border-color:#bfdbfe;color:#1e40af;margin:20px 0 0}.pos{display:flex;gap:8px;height:calc(100vh - 40px)}.pos-left{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px;overflow:hidden}.pos-resizer{flex-shrink:0;width:10px;cursor:col-resize;position:relative;align-self:stretch}.pos-resizer:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:4px;height:48px;border-radius:3px;background:var(--border);transition:background .1s}.pos-resizer:hover:after,.pos-resizer:active:after{background:var(--primary)}.tabs{display:flex;gap:8px;flex-wrap:wrap}.tab{padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:14px}.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;overflow-y:auto;padding:2px}.product-card{border:1px solid var(--border);border-radius:10px;padding:12px;background:#fff;text-align:left}.product-card:hover{border-color:var(--primary)}.product-card .name{font-weight:600;font-size:14px;margin-bottom:6px}.product-card .price{color:var(--primary);font-weight:700}.product-card .stock{font-size:12px;color:var(--muted);margin-top:4px}.pack-tag{display:inline-block;margin-left:6px;font-size:11px;padding:1px 6px;border-radius:999px;background:#ecfeff;color:var(--wholesale);font-weight:600}.cart{display:flex;flex-direction:column;flex-shrink:0;padding-bottom:32px}.cart-items{flex:1;overflow-y:auto}.cart-line{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid var(--border)}.cart-line .qty{display:flex;align-items:center;gap:4px}.cart-line .qty button{width:26px;height:26px;border-radius:6px;border:1px solid var(--border);background:#fff}.channel-switch{display:flex;gap:6px}.channel-switch button{flex:1;padding:8px;border-radius:8px;border:1px solid var(--border);background:#fff}.channel-switch button.on-retail{background:var(--retail);color:#fff;border-color:var(--retail)}.channel-switch button.on-wholesale{background:var(--wholesale);color:#fff;border-color:var(--wholesale)}.total-line{display:flex;justify-content:space-between;padding:4px 0}.total-line.grand{font-size:20px;font-weight:700;border-top:2px solid var(--text);margin-top:6px;padding-top:10px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center}.modal{background:#fff;border-radius:12px;padding:20px;width:420px;max-width:90vw}.form-grid{display:grid;grid-template-columns:100px 1fr;gap:10px 12px;align-items:center;margin:12px 0}.chk{display:inline-flex;align-items:center;gap:6px;font-size:14px;cursor:pointer}.thumb-grid{display:flex;flex-wrap:wrap;gap:8px}.thumb{position:relative;width:64px;height:64px;border-radius:8px;overflow:hidden;border:1px solid var(--border)}.thumb img{width:100%;height:100%;object-fit:cover}.thumb button{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;border:none;background:#0009;color:#fff;font-size:12px;line-height:1;cursor:pointer}.thumb.add{display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--muted);cursor:pointer;background:#f9fafb}.list-thumb{width:40px;height:40px;border-radius:6px;object-fit:cover;border:1px solid var(--border);display:block}.list-thumb.empty{display:flex;align-items:center;justify-content:center;color:var(--border);background:#f9fafb}.scan-flash{position:fixed;top:90px;left:50%;transform:translate(-50%);background:#111827eb;color:#fff;padding:14px 28px;border-radius:12px;z-index:300;text-align:center;pointer-events:none;animation:scanflash .6s ease forwards;box-shadow:0 8px 24px #00000040}.scan-flash.warn{background:#be123cf0;animation-duration:1.5s}.scan-flash .sf-name{font-size:13px;opacity:.85;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.scan-flash .sf-qty{font-size:28px;font-weight:800;line-height:1.2}@keyframes scanflash{0%{opacity:0;transform:translate(-50%) scale(.9)}10%{opacity:1;transform:translate(-50%) scale(1)}55%{opacity:1}to{opacity:0;transform:translate(-50%) scale(1)}}.cart-line.line-active{background:#ede9fe;border-radius:8px;animation:lineflash .9s ease}@keyframes lineflash{0%{background:#c4b5fd}to{background:#ede9fe}}.cart-line.line-active.warn{background:#ffe4e6;animation:lineflashwarn 1.5s ease}@keyframes lineflashwarn{0%,30%{background:#fda4af}to{background:#ffe4e6}}.cust-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:250;background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:0 10px 28px #00000029;max-height:280px;overflow-y:auto}.cust-item{padding:9px 12px;cursor:pointer;font-size:14px}.cust-item:hover{background:#f5f3ff}.cust-item+.cust-item{border-top:1px solid var(--border)}.pos-notice{flex:none;width:100%;overflow:hidden;white-space:nowrap;background:#fff7ed;border:1px solid #fdba74;color:#9a3412;border-radius:8px;padding:8px 0;font-weight:600}.pos-notice span{display:inline-block;padding-left:100%;animation:pos-notice-scroll 18s linear infinite}@keyframes pos-notice-scroll{0%{transform:translate(0)}to{transform:translate(-100%)}}.pos-clock{margin:0 16px 14px;padding:10px;background:#1f2937;border-radius:8px;color:#cbd5e1;text-align:center}.pos-clock-date{font-size:13px;margin-bottom:4px}.pos-clock-time{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:#f8fafc;letter-spacing:.03em}