:root{
  --bg:#fbfbfa; --card:#ffffff; --ink:#1d1d1f; --muted:#6b6b70;
  --line:#e9e9e6; --brand:#0d5c4a; --brand-soft:#e7f3ef;
  --accent:#1f3a93; --warn:#b4541f; --danger:#c0392b; --ok:#1c7d4d;
  --radius:14px; --shadow:0 1px 2px rgba(0,0,0,.04),0 6px 18px rgba(0,0,0,.05);
  --safe:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--ink); font-size:15px; line-height:1.45;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent); text-decoration:none}
h1,h2,h3{font-weight:650; letter-spacing:-.01em; margin:.2em 0 .5em}
h1{font-size:1.35rem}
h2{font-size:1.1rem}
.muted{color:var(--muted)}
.small{font-size:.82rem}
.right{text-align:right}
.center{text-align:center}
.nowrap{white-space:nowrap}

/* ---------- layout ---------- */
.app{max-width:1100px;margin:0 auto;padding:0 14px 90px}
.topbar{
  position:sticky;top:0;z-index:20;background:rgba(251,251,250,.85);
  backdrop-filter:saturate(150%) blur(12px);
  display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--line);
}
.topbar .brand{font-weight:700;letter-spacing:-.02em}
.topbar .brand b{color:var(--brand)}
.topbar .spacer{flex:1}
.topbar .who{font-size:.8rem;color:var(--muted)}

/* desktop side nav hidden on phone */
.nav-desktop{display:none}

/* horizontal top nav (desktop) — hidden on phone (bottom tabbar used there) */
.nav-top{display:none}

/* bottom tab bar (phone) */
.tabbar{
  position:fixed;bottom:0;left:0;right:0;z-index:30;background:#fff;
  border-top:1px solid var(--line);display:flex;justify-content:space-around;
  padding:6px 4px calc(6px + var(--safe));
}
.tabbar a{display:flex;flex-direction:column;align-items:center;gap:2px;
  color:var(--muted);font-size:.62rem;padding:4px 8px;border-radius:10px;min-width:52px}
.tabbar a .ic{font-size:1.2rem;line-height:1}
.tabbar a.active{color:var(--brand);background:var(--brand-soft)}
.tabbar a.more{cursor:pointer}

/* ---------- cards & grid ---------- */
.grid{display:grid;gap:12px;grid-template-columns:repeat(2,1fr);margin:14px 0}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow)}
.kpi .lbl{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.kpi .val{font-size:1.3rem;font-weight:700;margin-top:4px;letter-spacing:-.02em}
.kpi .sub{font-size:.74rem;color:var(--muted);margin-top:2px}
.kpi.brand{background:var(--brand);color:#fff;border-color:var(--brand)}
.kpi.brand .lbl,.kpi.brand .sub{color:rgba(255,255,255,.8)}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow);margin:14px 0}
.card h2{margin-top:0}
.section-head{display:flex;align-items:center;gap:10px;margin:18px 0 6px}
.section-head h1{margin:0}
.section-head .spacer{flex:1}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:#fff;
  border:none;border-radius:10px;padding:10px 14px;font-size:.9rem;font-weight:600;
  cursor:pointer;box-shadow:var(--shadow)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn.sm{padding:6px 10px;font-size:.8rem}
.btn.danger{background:var(--danger)}
.btn.block{width:100%;justify-content:center}
.fab{position:fixed;right:16px;bottom:calc(74px + var(--safe));z-index:25;
  width:54px;height:54px;border-radius:50%;font-size:1.6rem;padding:0;justify-content:center}

/* ---------- chips / filters ---------- */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.chip{padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;
  font-size:.82rem;color:var(--ink);white-space:nowrap}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.searchbar{display:flex;gap:8px;margin:10px 0}
.searchbar input{flex:1}

/* ---------- tables that become cards on phone ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:.86rem}
thead th{text-align:left;color:var(--muted);font-weight:600;font-size:.74rem;
  text-transform:uppercase;letter-spacing:.03em;padding:8px 10px;border-bottom:1px solid var(--line)}
tbody td{padding:10px;border-bottom:1px solid var(--line);vertical-align:top}
tbody tr:active{background:#fafafa}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.7rem;font-weight:600}
.tag.export{background:var(--brand-soft);color:var(--brand)}
.tag.local{background:#fdeee2;color:var(--warn)}
.tag.usd{background:#e8eefc;color:var(--accent)}
.tag.eur{background:#eef7ee;color:var(--ok)}
.tag.paid{background:#e7f6ee;color:var(--ok)}
.tag.pending{background:#fdeee2;color:var(--warn)}
.tag.cancelled{background:#fbe9e7;color:var(--danger)}

/* card list (mobile primary view) */
.list{display:flex;flex-direction:column;gap:10px;margin:12px 0}
.row-card{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:12px;box-shadow:var(--shadow)}
.row-card .top{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.row-card .ttl{font-weight:650}
.row-card .amt{font-weight:700;white-space:nowrap}
.row-card .meta{color:var(--muted);font-size:.8rem;margin-top:4px;display:flex;gap:10px;flex-wrap:wrap}
.row-card .acts{display:flex;gap:8px;margin-top:10px}

/* ---------- forms ---------- */
form .field{margin:12px 0}
label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:5px;font-weight:600}
input,select,textarea{
  width:100%;font:inherit;padding:11px 12px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);-webkit-appearance:none;appearance:none}
input:focus,select,textarea:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
textarea{min-height:80px;resize:vertical}
.form-grid{display:grid;gap:0 14px;grid-template-columns:1fr 1fr}
.form-grid .full{grid-column:1/-1}
.checkbox{display:flex;align-items:center;gap:8px}
.checkbox input{width:auto}
.form-actions{display:flex;gap:10px;margin-top:18px}

/* ---------- flash ---------- */
.flashes{margin:12px 0;display:flex;flex-direction:column;gap:8px}
.flash{padding:10px 12px;border-radius:10px;font-size:.86rem}
.flash.ok{background:#e7f6ee;color:var(--ok)}
.flash.error{background:#fbe9e7;color:var(--danger)}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{width:100%;max-width:380px;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:26px;box-shadow:var(--shadow)}
.login-card .logo{font-size:1.4rem;font-weight:750;letter-spacing:-.02em;margin-bottom:2px}
.login-card .logo b{color:var(--brand)}
.captcha-row{display:flex;gap:10px;align-items:center}
.captcha-row img{border:1px solid var(--line);border-radius:8px;height:52px}
.captcha-row .reload{background:#fff;border:1px solid var(--line);border-radius:8px;
  height:40px;width:40px;font-size:1.1rem;cursor:pointer}

/* ---------- vault ---------- */
.vault-lock{max-width:380px;margin:40px auto;text-align:center}
.cred{display:flex;justify-content:space-between;align-items:center;gap:8px;
  padding:8px 0;border-bottom:1px dashed var(--line)}
.cred .k{color:var(--muted);font-size:.78rem}
.cred .v{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.84rem}
.copy{background:#fff;border:1px solid var(--line);border-radius:8px;padding:4px 8px;
  font-size:.74rem;cursor:pointer}
.reveal{cursor:pointer;color:var(--accent)}

/* inline-editable cells (Excel-like) */
.ecell{cursor:text;border-radius:4px;transition:background .12s;outline:none;min-width:40px}
.ecell:hover{background:#f3faf7;box-shadow:inset 0 -1px 0 var(--brand)}
.ecell:focus{background:#eafaf3;box-shadow:inset 0 0 0 2px var(--brand)}
.ecell.saved{background:#dff5e7}
.ecell.err{background:#fde7e4;box-shadow:inset 0 0 0 2px var(--danger)}
tbody td.editable{padding:6px 8px}
.addrow td{background:#fafdfb;padding:6px}
.addrow input,.addrow select{padding:7px 8px;font-size:.84rem;border-radius:8px}
.x-del{color:var(--danger);cursor:pointer;background:none;border:none;font-size:1rem;padding:2px 6px}
.x-del:hover{background:#fde7e4;border-radius:6px}
.hint-edit{font-size:.74rem;color:var(--muted);margin:4px 2px}

/* Excel-like freeze panes: sticky header, first column & totals row */
.sheet{padding:0}
@media(min-width:860px){
  .sheet{max-height:calc(100vh - 130px);overflow:auto}
  .sheet table{border-collapse:separate;border-spacing:0}
  .sheet td,.sheet th{white-space:nowrap}
  .sheet thead th{position:sticky;top:0;z-index:3;background:#f1f1ee}
  .sheet tfoot td{position:sticky;bottom:0;z-index:3;background:#fff;box-shadow:0 -1px 0 var(--ink)}
  .sheet tbody td:first-child{position:sticky;left:0;z-index:2;background:#fff;box-shadow:1px 0 0 var(--line)}
  .sheet thead th:first-child{position:sticky;left:0;z-index:5}
  .sheet tfoot td:first-child{position:sticky;left:0;z-index:4}
  .sheet tbody tr:hover td:first-child{background:#fafafa}
  /* column width tuning */
  .sheet td[data-col="buyer_name"],.sheet td[data-col="supplier_name"]{min-width:150px}
  .sheet td[data-col="notes"],.sheet td[data-col="comment"],.sheet td[data-col="brn_ref"]{white-space:normal;min-width:170px}
  .sheet td[data-col="invoice_no"],.sheet td[data-col="invoice_ref"]{min-width:90px}
}

.empty{text-align:center;color:var(--muted);padding:40px 10px}
.bar{height:8px;border-radius:6px;background:var(--brand-soft);overflow:hidden;margin-top:6px}
.bar > i{display:block;height:100%;background:var(--brand)}

.more-sheet{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.3);display:none}
.more-sheet.open{display:block}
.more-sheet .panel{position:absolute;bottom:0;left:0;right:0;background:#fff;
  border-radius:18px 18px 0 0;padding:14px 14px calc(20px + var(--safe));}
.more-sheet .panel a{display:flex;align-items:center;gap:12px;padding:14px 8px;
  border-bottom:1px solid var(--line);color:var(--ink);font-weight:550}

/* ---------- desktop ---------- */
@media(min-width:860px){
  .grid{grid-template-columns:repeat(4,1fr)}
  .tabbar{display:none}
  /* full-width single column — no sidebar */
  .app{display:block;max-width:none;margin:0;padding:14px 18px 40px}
  .app > .main{min-width:0}
  /* horizontal top nav — tab-style toolbar */
  .nav-top{display:flex;flex-wrap:wrap;align-items:stretch;gap:0 2px;
    padding:4px 14px;background:#fff;border-bottom:1px solid var(--line);
    position:sticky;top:53px;z-index:19;box-shadow:0 2px 6px rgba(0,0,0,.04)}
  .nav-top a{display:flex;align-items:center;padding:9px 12px;color:var(--muted);
    font-weight:600;font-size:.88rem;border-bottom:3px solid transparent;letter-spacing:-.01em}
  .nav-top a:hover{color:var(--ink);background:#f7f7f5}
  .nav-top a.active{color:var(--brand);border-bottom-color:var(--brand)}
  .nav-top .nav-sep{width:1px;align-self:center;height:20px;background:var(--line);margin:0 8px;flex:0 0 auto}
  .fab{display:none}
  .row-card{display:none}
  .hide-desktop{display:none}
}
@media(max-width:859px){
  .hide-mobile{display:none}
  .table-wrap.as-cards{display:none}
}