:root{--bg: #f6f7f9;--card: #ffffff;--border: #e2e5ea;--text: #16181d;--muted: #6b7280;--accent: #2563eb;--accent-ink: #ffffff;--danger: #dc2626;--success: #16a34a;--warn: #d97706;--radius: 10px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5}input,select,textarea,button{font-family:inherit;font-size:inherit}.shell{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:24px;padding:14px 28px;background:var(--card);border-bottom:1px solid var(--border)}.topbar-brand{font-weight:700;font-size:16px}.topbar-nav{display:flex;gap:4px;flex:1}.topbar-link{text-decoration:none;color:var(--muted);padding:8px 14px;border-radius:8px;font-weight:500}.topbar-link:hover{background:var(--bg);color:var(--text)}.topbar-link.active{background:var(--accent);color:var(--accent-ink)}.topbar-logout{background:transparent;border:1px solid var(--border);border-radius:8px;padding:7px 14px;color:var(--muted);cursor:pointer}.topbar-logout:hover{color:var(--text);border-color:var(--text)}.page{flex:1;padding:28px;max-width:1100px;width:100%;margin:0 auto}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:12px;flex-wrap:wrap}.page-title{font-size:20px;font-weight:700;margin:0}.page-subtitle{color:var(--muted);margin:4px 0 0;font-size:13px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;width:100%;max-width:320px;display:flex;flex-direction:column;gap:12px;box-shadow:0 8px 30px #0000000f}.login-brand{font-weight:700;font-size:18px}.login-copy{color:var(--muted);margin:-6px 0 6px;font-size:13px}.login-input{border:1px solid var(--border);border-radius:8px;padding:10px 12px;width:100%}.login-input:focus{outline:2px solid var(--accent);outline-offset:-1px}.login-error{color:var(--danger);font-size:13px;margin:0}.login-btn{background:var(--accent);color:var(--accent-ink);border:none;border-radius:8px;padding:11px;font-weight:600;cursor:pointer}.login-btn:disabled{opacity:.6;cursor:not-allowed}.login-btn:not(:disabled):hover{filter:brightness(1.08)}.btn{border:1px solid var(--border);background:var(--card);border-radius:8px;padding:9px 16px;font-weight:500;cursor:pointer;color:var(--text)}.btn:hover{border-color:var(--text)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.btn-primary:hover{filter:brightness(1.08)}.btn-danger{background:transparent;border-color:var(--danger);color:var(--danger)}.btn-danger:hover{background:var(--danger);color:#fff}.btn-sm{padding:5px 10px;font-size:12px;border-radius:6px}.btn-link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;font-weight:500}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;overflow-x:auto}.empty-state{color:var(--muted);text-align:center;padding:40px 20px}table{width:100%;min-width:560px;border-collapse:collapse}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);font-size:13px;white-space:nowrap}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}tr:last-child td{border-bottom:none}.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;background:#f3f4f6;color:#374151}.tag-unpaid{background:#fef3c7;color:#92400e}.tag-paid{background:#dcfce7;color:#166534}.tag-void{background:#f3f4f6;color:#6b7280}.tag-low{background:#fee2e2;color:#991b1b}.field{display:flex;flex-direction:column;gap:5px;margin-bottom:14px}.field label{font-size:12px;color:var(--muted);font-weight:600}.field input,.field select,.field textarea{border:1px solid var(--border);border-radius:8px;padding:9px 11px;width:100%;background:#fff}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}.field-row{display:flex;gap:12px}.field-row .field{flex:1;min-width:0}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f111573;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal{background:var(--card);border-radius:var(--radius);padding:24px;width:100%;max-width:440px;max-height:86vh;overflow-y:auto;box-shadow:0 24px 60px #00000040}.modal-title{font-size:16px;font-weight:700;margin:0 0 16px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.variant-row{display:flex;flex-wrap:wrap;gap:8px;align-items:flex-end;margin-bottom:12px}.variant-row .field{margin-bottom:0;flex:1 1 120px;min-width:0}.variant-row .field.narrow{flex:1 1 80px}.variant-row .variant-remove{flex:0 0 auto}.unit-toggle{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:8px;overflow:hidden}.unit-toggle button{border:none;background:#fff;padding:7px 0;font-size:12px;color:var(--text);cursor:pointer}.unit-toggle button.active{background:var(--accent);color:var(--accent-ink);font-weight:600}.payment-toggle{grid-template-columns:repeat(3,1fr)}.payment-toggle button{padding:9px 0;font-size:13px}.variant-accordion{border:1px solid var(--border);border-radius:8px;margin-bottom:8px;overflow:hidden}.variant-accordion-header{display:flex;align-items:stretch;gap:8px;background:var(--bg)}.variant-accordion-toggle{flex:1;display:flex;align-items:center;gap:8px;min-width:0;border:none;background:none;padding:9px 10px;font-family:inherit;font-size:13px;color:var(--text);cursor:pointer;text-align:left}.variant-accordion-header .btn{flex:0 0 auto;margin:6px 8px 6px 0}.accordion-caret{font-size:12px;color:var(--muted);flex:0 0 auto}.variant-accordion-title{font-weight:600;flex:0 0 auto}.variant-accordion-summary{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.variant-accordion .variant-row{margin:10px 10px 0;padding-bottom:10px}.discount-row{display:flex;gap:8px;align-items:stretch}.discount-row .discount-type-toggle{flex:0 0 90px}.discount-row input{flex:1;min-width:0}.stock-low{color:var(--danger);font-weight:700}.alert-banner{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:var(--radius);padding:12px 16px;margin-bottom:16px;font-size:13px;line-height:1.6}.pagination{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:14px;font-size:13px;color:var(--muted)}.section-title{font-size:14px;font-weight:700;margin:0 0 12px}.stats-subhead{font-size:13px;font-weight:700;margin:20px 0 10px}.subtabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--border);overflow-x:auto}.subtabs button{padding:8px 14px;border:none;background:none;font-family:inherit;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap}.subtabs button.active{color:var(--accent);border-bottom-color:var(--accent)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}.stat-tile{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;display:flex;flex-direction:column;gap:6px}.stat-label{font-size:11px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}.stat-value{font-size:22px;font-weight:700}.stat-value.stat-warn{color:var(--danger)}.invoice-layout{display:flex;gap:24px;align-items:flex-start;flex-wrap:wrap}.invoice-main{flex:2 1 480px}.invoice-side{flex:1 1 320px;position:sticky;top:20px}.line-item-row{display:grid;grid-template-columns:1.6fr .9fr 85px 85px 95px 28px;gap:8px;align-items:center;padding:8px 0;border-bottom:1px solid var(--border);font-size:13px}.line-item-row.header{color:var(--muted);font-size:11px;text-transform:uppercase;font-weight:600}.qty-cell{display:flex;align-items:center;gap:4px;min-width:0}.qty-input{width:60px;min-width:0;border:1px solid var(--border);border-radius:6px;padding:4px 6px}.qty-unit{color:var(--muted);font-size:12px;white-space:nowrap}.qty-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}.totals-row{display:flex;justify-content:space-between;padding:6px 0;font-size:13px}.totals-row.total{font-weight:700;font-size:16px;border-top:1px solid var(--border);margin-top:6px;padding-top:10px}.picker-groups{max-height:360px;overflow-y:auto}.picker-group{border:1px solid var(--border);border-radius:8px;margin-bottom:10px;overflow:hidden}.picker-group:last-child{margin-bottom:0}.picker-group-title{display:flex;width:100%;align-items:center;justify-content:space-between;background:var(--bg);padding:7px 12px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);border:none;font-family:inherit;cursor:pointer}.picker-group-title.expanded{border-bottom:1px solid var(--border)}.accordion-caret{font-size:12px}.picker-item{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-bottom:1px solid var(--border);cursor:pointer}.picker-item:last-child{border-bottom:none}.picker-item:hover{background:var(--bg)}.picker-item-meta{color:var(--muted);font-size:12px}@media (max-width: 720px){.topbar{flex-wrap:wrap;gap:10px;padding:12px 16px}.page{padding:16px}.line-item-row{grid-template-columns:1fr .7fr 52px 56px 62px 18px;gap:4px;font-size:10.5px}.qty-cell{flex-direction:column;align-items:flex-start;gap:1px}.qty-input{width:100%}}