:root{--primary:#2563eb;--primary-dark:#1e40af;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;--bg:#f9fafb;--card-bg:#fff;--warn:#b45309;--warn-bg:#fef3c7;--danger:#b91c1c;font-family:system-ui,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}a{color:var(--primary);text-decoration:none}button{cursor:pointer;background:var(--primary);color:#fff;border:none;border-radius:6px;padding:8px 14px;font-size:14px}button:hover{background:var(--primary-dark)}input,select{border:1px solid var(--border);border-radius:6px;padding:8px;font-size:14px}.public-shell{flex-direction:column;min-height:100vh;display:flex}.public-header{border-bottom:1px solid var(--border);background:#fff;justify-content:space-between;align-items:center;padding:16px 32px;display:flex}.public-header .brand a{color:var(--text);font-size:22px;font-weight:700}.public-header nav a{color:var(--text);margin-left:24px;font-weight:500}.public-header .staff-link{color:var(--primary)}.public-main{flex:1;width:100%;max-width:1100px;margin:0 auto;padding:40px 32px}.public-footer{text-align:center;color:var(--muted);border-top:1px solid var(--border);padding:16px;font-size:13px}.hero{text-align:center;padding:80px 20px}.hero h1{margin-bottom:16px;font-size:42px}.hero .cta{background:var(--primary);color:#fff;border-radius:8px;margin-top:24px;padding:12px 24px;font-weight:600;display:inline-block}.product-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;margin-top:24px;display:grid}.product-card{background:var(--card-bg);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:16px}.product-card h3{margin:0 0 8px}.product-card .part-no,.product-card .category{color:var(--muted);margin:2px 0;font-size:13px}.back-link{margin-bottom:16px;display:inline-block}.staff-shell{min-height:100vh;display:flex}.staff-sidebar{color:#fff;background:#111827;width:240px;padding:24px 16px}.staff-brand{margin-bottom:24px;font-size:18px;font-weight:700}.staff-sidebar nav{flex-direction:column;gap:4px;display:flex}.nav-item{color:#d1d5db;border-radius:6px;padding:10px 12px}.nav-item.active,.nav-item:hover{color:#fff;background:#1f2937}.staff-content{flex-direction:column;flex:1;display:flex}.staff-topbar{border-bottom:1px solid var(--border);background:#fff;justify-content:flex-end;align-items:center;padding:12px 24px;display:flex}.staff-topbar .user-info{color:var(--muted);align-items:center;gap:12px;font-size:14px;display:flex}.logout-btn{background:#ef4444}.logout-btn:hover{background:#b91c1c}.staff-main{flex:1;padding:24px}.login-page{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-form{border:1px solid var(--border);background:#fff;border-radius:10px;flex-direction:column;gap:14px;width:320px;padding:32px;display:flex}.login-form label{flex-direction:column;gap:6px;font-size:14px;display:flex}.form-error{color:var(--danger);background:#fee2e2;border-radius:6px;padding:8px 12px;font-size:13px}.kpi-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin:20px 0;display:grid}.kpi-card{background:var(--card-bg);border:1px solid var(--border);text-align:center;border-radius:10px;padding:20px}.kpi-card.warn{background:var(--warn-bg)}.kpi-value{font-size:32px;font-weight:700}.kpi-label{color:var(--muted);margin-top:6px;font-size:13px}.chart-panel{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;margin-bottom:20px;padding:20px}.lists-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;display:grid}.list-panel{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:16px}.list-panel ul{margin:0;padding:0;font-size:14px;list-style:none}.list-panel li{border-bottom:1px solid var(--border);padding:6px 0}.list-panel li.empty{color:var(--muted)}.data-table{border-collapse:collapse;background:var(--card-bg);border:1px solid var(--border);border-radius:8px;width:100%;overflow:hidden}.data-table th,.data-table td{text-align:left;border-bottom:1px solid var(--border);padding:10px 12px;font-size:14px}.data-table th{background:#f3f4f6}.data-table td.empty{text-align:center;color:var(--muted);padding:24px}.status-pill{background:#e5e7eb;border-radius:999px;padding:3px 8px;font-size:12px}.page-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.form-row{flex-wrap:wrap;gap:12px;margin-bottom:12px;display:flex}.form-row label{flex-direction:column;flex:1;gap:4px;min-width:160px;font-size:13px;display:flex}.order-form,.form-actions{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;margin-bottom:20px;padding:20px}.tabs{gap:8px;margin-bottom:16px;display:flex}.tab{color:var(--text);background:#e5e7eb}.tab.active{background:var(--primary);color:#fff}.page-loading,.page-error{text-align:center;color:var(--muted);padding:40px}.page-error{color:var(--danger)}