:root{
  /* brand palette from WESTAW logo (#105B63) */
  --navy:#105B63; --navy2:#177780; --accent:#0E7490; --ink:#0F172A; --sub:#64748B;
  --line:#E2E8F0; --bg:#F8FAFC; --card:#FFFFFF; --green:#059669; --red:#DC2626; --amber:#D97706;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
.mono{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}

/* ---------- PIN lock ---------- */
#lockScreen{position:fixed;inset:0;background:#04272B;display:flex;align-items:center;justify-content:center;z-index:200}
.lock-card{background:#0A363C;border:1px solid #17545C;border-radius:18px;padding:38px 44px;width:380px;text-align:center;color:#E2F1F2}
.lock-card h2{font-size:20px;margin-bottom:6px}
.lock-sub{font-size:12px;color:#8FC0C5;margin-bottom:22px}
.lock-label{display:block;text-align:left;font-size:11px;color:#8FC0C5;margin:14px 0 6px;font-weight:600}
.lock-card select{width:100%;background:#072E33;border:1px solid #1D5F67;color:#E2F1F2;border-radius:9px;padding:10px 12px;font-size:14px}
.pin-row{display:flex;gap:12px;justify-content:center;margin-top:4px}
.pin{width:52px;height:56px;background:#072E33;border:1px solid #1D5F67;border-radius:10px;color:#fff;font-size:22px;text-align:center}
.pin:focus{outline:2px solid var(--accent);border-color:var(--accent)}
.pin-err{color:#F87171;font-size:12px;min-height:18px;margin-top:8px}
.btn-unlock{width:100%;background:var(--accent);color:#fff;margin-top:8px;padding:12px;font-size:14px}
.btn-unlock:hover{background:#1D4ED8}

/* ---------- header ---------- */
header{background:var(--navy);color:#fff;padding:0 28px;display:flex;align-items:center;justify-content:space-between;height:56px;position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:center;gap:12px}
.brand .tag{font-size:11px;color:#A7CFD3;border-left:1px solid #2E7079;padding-left:12px;letter-spacing:.05em}
.fy-badge{background:#fff;color:var(--navy);font-weight:700;font-size:12px;padding:5px 12px;border-radius:99px}
.tabs{display:flex;gap:6px}
.tab{background:transparent;border:1px solid transparent;color:#A7CFD3;font-size:13px;font-weight:600;padding:7px 16px;border-radius:99px;cursor:pointer}
.tab:hover{color:#fff}
.tab.active{background:#fff;color:var(--navy)}
.hdr-actions{display:flex;gap:10px;align-items:center}
.hdr-btn{background:transparent;border:1px solid #2E7079;color:#D2E8EA;font-size:12px;padding:6px 12px;border-radius:8px;cursor:pointer}
.hdr-btn:hover{background:var(--navy2)}

main{max-width:1240px;margin:0 auto;padding:26px 28px 80px}
.page-title{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.page-title h1{font-size:26px;letter-spacing:-.02em}
.page-title .sub{color:var(--sub);font-size:13px;margin-top:4px}
.btn{border:none;border-radius:9px;padding:9px 16px;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy2)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--bg)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.stat .k{font-size:11px;color:var(--sub);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}
.stat .v{font-size:20px;font-weight:700}
.stat .v.green{color:var(--green)} .stat .v.amber{color:var(--amber)}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
table.list{width:100%;border-collapse:collapse}
table.list th{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--sub);text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);background:#FBFCFE}
table.list th.r, table.list td.r{text-align:right}
table.list td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
tr.inv-row:hover{background:#FBFCFE}
.inv-no{font-weight:700;font-size:13px}
.net{color:var(--green);font-weight:700}
.actions{display:flex;gap:4px;justify-content:flex-end;flex-wrap:wrap}
.act{border:1px solid var(--line);background:#fff;border-radius:7px;padding:5px 10px;font-size:12px;font-weight:600;cursor:pointer;color:var(--ink)}
.act:hover{border-color:var(--accent);color:var(--accent)}
.act.danger:hover{border-color:var(--red);color:var(--red)}
tr.doc-row td{background:#F4F7FB;padding:9px 14px;border-bottom:1px solid var(--line)}
.doc-flex{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.doc-item{display:flex;align-items:center;gap:5px}
.doc-item label{font-size:10px;font-weight:700;color:var(--sub);text-transform:uppercase;letter-spacing:.04em}
.doc-item input{border:1px solid var(--line);border-radius:6px;padding:5px 8px;font-size:12px;width:110px;background:#fff}
.doc-item input.wide{width:170px}
.doc-item input:focus{outline:2px solid #B5E1E7;border-color:var(--accent)}
.pill{font-size:10px;font-weight:700;padding:3px 9px;border-radius:99px;letter-spacing:.03em}
.pill.ok{background:#D1FAE5;color:#065F46}
.pill.pend{background:#FEF3C7;color:#92400E}
.filled{background:#ECFDF5 !important;border-color:#A7F3D0 !important}

/* ---------- edit view ---------- */
.form-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-bottom:18px}
.form-card h3{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--sub);margin-bottom:14px}
.grid{display:grid;gap:12px}
.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:1fr 1fr 1fr}.g4{grid-template-columns:1fr 1fr 1fr 1fr}
.field label{display:block;font-size:11px;color:var(--sub);font-weight:600;margin-bottom:4px}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:13px;font-family:inherit;background:#fff}
.field input:focus,.field textarea:focus{outline:2px solid #B5E1E7;border-color:var(--accent)}
table.items{width:100%;border-collapse:collapse;margin-top:4px}
table.items th{font-size:10px;text-transform:uppercase;color:var(--sub);text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}
table.items td{padding:5px 6px;border-bottom:1px solid #F1F5F9}
table.items input{border:1px solid var(--line);border-radius:6px;padding:6px 8px;font-size:12px;width:100%}
table.items td.calc{font-size:12px;text-align:right;white-space:nowrap}
.totals{margin-left:auto;max-width:380px;padding:14px 0 0}
.totals .row{display:flex;justify-content:space-between;padding:5px 0;font-size:13px}
.totals .row.big{border-top:2px solid var(--ink);margin-top:8px;padding-top:10px;font-size:15px;font-weight:800;color:var(--green)}
.back{color:var(--sub);cursor:pointer;font-size:13px;margin-bottom:14px;display:inline-block}
.back:hover{color:var(--ink)}

#toast{position:fixed;top:70px;right:24px;background:#065F46;color:#fff;padding:10px 18px;border-radius:10px;font-size:13px;font-weight:600;opacity:0;transition:opacity .25s;z-index:99;pointer-events:none}
#toast.show{opacity:1}

/* ---------- settings modal ---------- */
.modal-bg{position:fixed;inset:0;background:rgba(15,23,42,.45);display:none;align-items:flex-start;justify-content:center;z-index:80;padding:60px 20px;overflow:auto}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:16px;max-width:660px;width:100%;padding:24px}
.modal h2{font-size:18px;margin-bottom:16px}

/* ---------- suppliers tab ---------- */
.upload-card{border:2px dashed #CBD5E1;border-radius:14px;background:#fff;padding:30px 20px;text-align:center;cursor:pointer;transition:border-color .15s}
.upload-card:hover{border-color:var(--accent)}
.upload-card.loaded{border-style:solid;border-color:#A7F3D0;background:#F0FDF9}
.up-icon{font-size:26px;margin-bottom:8px}
.up-title{font-weight:700;font-size:14px}
.up-sub{font-size:12px;color:var(--sub);margin-top:4px}
.sup-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:12px}
.sup-name{font-size:18px;font-weight:800}
.sup-gstin{font-size:12px;color:var(--sub)}
.balance-pos{color:var(--green)} .balance-neg{color:var(--red)}
table.sup{width:100%;border-collapse:collapse;font-size:13px}
table.sup th{font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--sub);text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);background:#FBFCFE}
table.sup td{padding:9px 12px;border-bottom:1px solid #F1F5F9}
table.sup th.r,table.sup td.r{text-align:right}
table.sup tr.total td{font-weight:800;background:#F8FAFC;border-top:2px solid var(--ink)}

@media(max-width:900px){.stats{grid-template-columns:1fr 1fr}.g4,.g3{grid-template-columns:1fr 1fr}}