:root{
  --bg:#0f172a;--panel:#ffffff;--muted:#64748b;--border:#e2e8f0;
  --ink:#0f172a;--brand:#0ea5e9;--brand-dark:#0369a1;
  --good:#059669;--warn:#d97706;--bad:#dc2626;--urgent:#991b1b;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Helvetica Neue",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--ink);background:#f1f5f9}
h1,h2,h3{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:-0.01em}
h2{font-size:22px;margin-bottom:12px;font-weight:700}
h3{font-size:15px;font-weight:700;margin-bottom:10px;color:#334155}
.muted{color:var(--muted);font-size:13px}
.hidden{display:none!important}

header.top{display:flex;justify-content:space-between;align-items:center;background:#ffffff;color:var(--ink);padding:18px 24px;border-bottom:1px solid var(--border)}
.brand{display:flex;gap:18px;align-items:center}
.brand-logo{height:44px;width:auto;display:block}
.brand-text h1{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-0.01em}
.brand .sub{font-size:12px;color:var(--muted)}
.logo{width:38px;height:38px;border-radius:8px;background:white;color:#0369a1;display:grid;place-items:center;font-weight:800;font-size:20px}

nav.tabs{background:white;border-bottom:1px solid var(--border);padding:0 24px;display:flex;overflow-x:auto;white-space:nowrap}
nav.tabs button{background:none;border:none;padding:12px 16px;cursor:pointer;color:#64748b;font-weight:500;font-size:13px;border-bottom:2px solid transparent}
nav.tabs button.active{color:var(--brand-dark);border-bottom-color:var(--brand)}
nav.tabs button:hover{color:var(--ink)}

main{padding:24px;max-width:1400px;margin:0 auto}
.tab{display:none}
.tab.active{display:block}

.card{background:white;border:1px solid var(--border);border-radius:8px;padding:18px;margin-bottom:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
@media(max-width:900px){.grid-2{grid-template-columns:1fr}}

.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:18px}
.kpi{background:white;border:1px solid var(--border);border-radius:8px;padding:14px}
.kpi .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:0.5px}
.kpi .value{font-size:26px;font-weight:700;margin-top:4px;color:var(--ink)}
.kpi .sub{font-size:12px;color:var(--muted);margin-top:2px}
.kpi.accent{border-left:4px solid var(--brand)}
.kpi.warn{border-left:4px solid var(--warn)}
.kpi.bad{border-left:4px solid var(--bad)}
.mini-kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:6px;margin-bottom:8px}
.mini-kpi{background:#f8fafc;border:1px solid var(--border);border-radius:6px;padding:10px 12px}
.mini-kpi .label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:0.4px}
.mini-kpi .value{font-size:20px;font-weight:700;color:var(--ink);margin-top:2px}
.mini-kpi .sub{font-size:11px;color:var(--muted);margin-top:2px}
.mini-kpi.accent{border-left:3px solid var(--brand)}
.btn.danger-text{color:var(--bad);background:none;border:1px solid var(--border);padding:2px 8px}
.btn.danger-text:hover{background:#fef2f2}

/* Products page: location-colour coding so warehouse vs FBA jumps out */
.mini-kpi.accent-warehouse{border-left:4px solid #0369a1;background:#f0f9ff}
.mini-kpi.accent-fba{border-left:4px solid #059669;background:#ecfdf5}
.mini-kpi.accent-fba-in{border-left:4px solid #d97706;background:#fffbeb}
.mini-kpi.accent-transit{border-left:4px solid #7c3aed;background:#f5f3ff}

.stock-cell{font-weight:700;font-size:14px;padding:4px 8px;border-radius:4px;display:inline-block;min-width:46px;text-align:center}
.stock-cell.no-stock{color:#cbd5e1;font-weight:400;background:transparent}
.stock-cell.warehouse.has-stock{background:#e0f2fe;color:#0369a1}
.stock-cell.fba.has-stock{background:#d1fae5;color:#065f46}
.stock-cell.fba_in.has-stock{background:#fef3c7;color:#92400e}
.stock-cell.transit.has-stock{background:#ede9fe;color:#5b21b6}

/* column backgrounds in the products table for at-a-glance separation */
table th.col-warehouse, table td.col-warehouse{background:#f0f9ff}
table th.col-fba,       table td.col-fba{background:#ecfdf5}
table th.col-fba-in,    table td.col-fba-in{background:#fffbeb}
table th.col-transit,   table td.col-transit{background:#f5f3ff}

.btn{background:#f1f5f9;border:1px solid var(--border);color:var(--ink);padding:8px 14px;border-radius:6px;cursor:pointer;font-size:13px;font-weight:500;margin-right:6px}
.btn:hover{background:#e2e8f0}
.btn.primary{background:var(--brand);color:white;border-color:var(--brand)}
.btn.primary:hover{background:var(--brand-dark)}
.btn.danger{background:white;color:var(--bad);border-color:#fecaca}
.btn.danger:hover{background:#fee2e2}
.btn.small{padding:4px 8px;font-size:12px}
.row-actions{display:flex;gap:6px;flex-wrap:wrap}

/* ---- Auth screen ---- */
.auth-screen{position:fixed;inset:0;background:linear-gradient(135deg,#0369a1 0%,#0ea5e9 100%);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}
.auth-card{background:white;border-radius:12px;padding:32px;width:100%;max-width:380px;box-shadow:0 20px 60px rgba(0,0,0,0.2)}
.auth-brand{display:flex;flex-direction:column;align-items:center;gap:10px;margin-bottom:24px}
.auth-brand h2{font-size:18px;text-align:center;color:#334155}
.logo.big{width:54px;height:54px;font-size:28px;background:linear-gradient(135deg,#0369a1,#0ea5e9);color:white}
.auth-card label{display:block;margin-bottom:14px;font-size:13px;color:#334155;font-weight:500}
.auth-card label input,.auth-card label select{display:block;width:100%;margin-top:5px;font-size:15px;padding:10px 12px}
.auth-card .pin-input{letter-spacing:6px;text-align:center;font-size:22px;font-weight:600}
.auth-card .btn{width:100%;padding:11px 16px;font-size:14px;font-weight:600}
.auth-card .error{color:var(--bad);font-size:13px;margin-bottom:10px;padding:8px 10px;background:#fef2f2;border-radius:6px;border:1px solid #fecaca}
.auth-hint{font-size:12px;color:var(--muted);margin-top:12px;text-align:center}

/* ---- Header user chip ---- */
.top-right{display:flex;align-items:center;gap:16px;color:var(--muted);font-size:13px}
.user-chip{display:flex;align-items:center;gap:10px;background:#f1f5f9;border:1px solid var(--border);padding:5px 5px 5px 12px;border-radius:20px;font-size:13px}
.user-chip-name{color:var(--ink);font-weight:500}
.user-chip .btn{background:var(--brand);color:white;border:none}
.user-chip .btn:hover{background:var(--brand-dark)}

input,select,textarea{border:1px solid var(--border);border-radius:6px;padding:7px 10px;font-size:13px;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,165,233,.15)}

.row-between{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:12px;flex-wrap:wrap}
.row-between input{min-width:240px}

table{width:100%;border-collapse:collapse;background:white;border-radius:8px;overflow:hidden;border:1px solid var(--border);font-size:13px}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border)}
th{background:#f8fafc;font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:0.3px;color:#475569;position:sticky;top:0}
tr:hover{background:#f8fafc}
td .sku{font-family:ui-monospace,monospace;font-size:12px;color:#475569}
td .asin{font-family:ui-monospace,monospace;font-size:11px;color:#64748b}
.numeric{text-align:right;font-variant-numeric:tabular-nums}

.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:600}
.badge.ok{background:#ecfdf5;color:#047857}
.badge.warn{background:#fffbeb;color:#b45309}
.badge.bad{background:#fef2f2;color:#b91c1c}
.badge.urgent{background:#dc2626;color:white}
.badge.neutral{background:#f1f5f9;color:#475569}

.pills{display:flex;gap:6px;margin-bottom:14px}
.pill{background:white;border:1px solid var(--border);padding:6px 12px;border-radius:20px;cursor:pointer;font-size:13px}
.pill.active{background:var(--brand);color:white;border-color:var(--brand)}

.modal{position:fixed;inset:0;background:rgba(15,23,42,0.55);display:grid;place-items:center;z-index:1000;padding:20px}
.modal-box{background:white;border-radius:10px;padding:22px;max-width:720px;width:100%;max-height:90vh;overflow-y:auto}
.modal-box h3{font-size:18px;margin-bottom:12px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.form-row.single{grid-template-columns:1fr}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:3px;font-weight:500}
label input,label select,label textarea{width:100%}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}

.table-wrap{overflow-x:auto;margin-bottom:20px;-webkit-overflow-scrolling:touch}
/* Safety net: any container div that receives a raw <table> via innerHTML
   scrolls sideways instead of blowing the page width out on small screens. */
[id$="-table"]{overflow-x:auto;-webkit-overflow-scrolling:touch}

.filter-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;background:white;border:1px solid var(--border);border-radius:8px;padding:12px 14px;margin-bottom:14px}
.filter-bar label{font-size:11px;text-transform:uppercase;letter-spacing:0.4px;color:var(--muted);margin:0;display:flex;flex-direction:column;gap:4px}
.filter-bar input,.filter-bar select{min-width:150px}
.filter-bar input[type=text]{min-width:220px}
.filter-bar .btn{margin-top:auto}

.stage-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}
.stage-row:last-child{border:none;font-weight:700}
.stage-row .label{font-weight:500;color:#334155;text-transform:capitalize}
.stage-row .units{color:var(--muted);font-size:12px;margin-right:10px}
.stage-row .gbp{font-variant-numeric:tabular-nums;min-width:110px;text-align:right}

.top-right{font-size:13px}

/* =====================================================================
   Mobile layer — phones & small tablets.
   Goals: no sideways page scroll, thumb-sized touch targets, no iOS
   auto-zoom on inputs (16px font), full-screen modals, sticky tab bar.
   ===================================================================== */
@media (max-width: 740px){
  /* --- header: compact, single line --- */
  header.top{padding:10px 12px;gap:8px}
  .brand{gap:8px;min-width:0}
  .brand-logo{height:26px}
  .brand-text h1{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand .sub{display:none}
  #kpi-now{display:none}
  .top-right{gap:8px;flex-shrink:0}
  .user-chip{padding:3px 3px 3px 9px;font-size:12px}
  .user-chip .btn{padding:7px 10px;font-size:12px}

  /* --- tab bar: sticky so you can always switch, swipe sideways --- */
  nav.tabs{
    position:sticky;top:0;z-index:50;padding:0 8px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
    box-shadow:0 1px 3px rgba(15,23,42,.06)
  }
  nav.tabs::-webkit-scrollbar{display:none}
  nav.tabs button{padding:13px 11px;font-size:13px}

  main{padding:12px}
  h2{font-size:19px}
  .card{padding:13px;border-radius:8px}

  /* --- KPI cards: two per row --- */
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .kpi{padding:11px}
  .kpi .value{font-size:21px}
  .mini-kpi-row{grid-template-columns:repeat(2,1fr);gap:8px}

  /* --- forms & inputs: one column; 16px font stops iOS zoom-on-focus --- */
  .form-row{grid-template-columns:1fr}
  input,select,textarea{font-size:16px;padding:10px 12px;width:100%;min-width:0}
  .row-between input{min-width:0;width:100%}
  .row-between > div{display:flex;flex-wrap:wrap;gap:6px;width:100%}
  .filter-bar{padding:10px}
  .filter-bar label{width:100%}
  .filter-bar input,.filter-bar select,
  .filter-bar input[type=text]{min-width:0;width:100%}
  .filter-bar .btn{flex:1}

  /* --- buttons: thumb-sized --- */
  .btn{padding:11px 14px;font-size:14px;margin-right:0}
  .btn.small{padding:7px 10px;font-size:13px}
  .pills{flex-wrap:wrap}
  .pill{padding:9px 13px;font-size:13px}

  /* --- tables: slightly tighter, scroll inside their wrapper --- */
  table{font-size:12.5px}
  th,td{padding:8px 9px}

  /* --- modals: edge-to-edge sheets --- */
  .modal{padding:0;align-items:end}
  .modal-box{
    max-width:none;border-radius:14px 14px 0 0;padding:16px;
    max-height:94dvh;padding-bottom:max(16px, env(safe-area-inset-bottom))
  }
  .modal-actions{position:sticky;bottom:0;background:white;margin-top:12px;padding-bottom:2px}
  .modal-actions .btn{flex:1}

  /* --- dashboard stage rows wrap gracefully --- */
  .stage-row .gbp{min-width:80px}
}