:root{
  --ink:#0F1826;
  --ink-soft:#48566E;
  --ink-faint:#8593A8;
  --cobalt:#2540C4;
  --cobalt-dk:#1B2F94;
  --indigo:#3A34C9;
  --sky:#4B8FE3;
  --canvas:#EBEEF5;
  --paper:#FFFFFF;
  --line:#DBE1EC;
  --line-hard:#C4CDDD;
  --ok:#127A50;
  --ok-bg:#E4F3EC;
  --warn:#9A5A08;
  --warn-bg:#FBEEDA;
  --danger:#B5283A;
  --shadow:0 1px 2px rgba(15,24,38,.05), 0 8px 24px rgba(15,24,38,.06);
  --r:10px;
  --mono:"JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --disp:"Space Grotesk", system-ui, sans-serif;
  --body:"Inter", system-ui, -apple-system, sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--body);
  color:var(--ink);
  background:
    linear-gradient(var(--canvas),var(--canvas)),
    repeating-linear-gradient(0deg,transparent,transparent 39px,rgba(37,64,196,.04) 39px,rgba(37,64,196,.04) 40px);
  background-attachment:fixed;
  font-size:14px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:var(--disp);font-weight:600;margin:0;letter-spacing:-.01em}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}

/* ---------------- Top bar ---------------- */
.topbar{
  position:sticky;top:0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:10px 22px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-logo{width:40px;height:40px;border-radius:50%;object-fit:cover;box-shadow:0 0 0 1px var(--line)}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-name{font-family:var(--disp);font-weight:700;font-size:16px;letter-spacing:-.02em}
.brand-sub{font-size:11px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.14em}
.nav{display:flex;gap:4px;background:var(--canvas);padding:4px;border-radius:999px;border:1px solid var(--line)}
.nav-btn{
  border:none;background:transparent;color:var(--ink-soft);
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:500;transition:.15s;
}
.nav-btn:hover{color:var(--ink)}
.nav-btn.active{background:var(--paper);color:var(--cobalt);box-shadow:var(--shadow);font-weight:600}
.topbar-right{display:flex;align-items:center;gap:12px}
.mode-pill{font-size:11px;font-weight:600;padding:5px 11px;border-radius:999px;letter-spacing:.02em;white-space:nowrap;border:1px solid transparent}
.mode-pill.server{background:var(--ok-bg);color:var(--ok);border-color:#bfe6d2}
.mode-pill.local{background:var(--warn-bg);color:var(--warn);border-color:#f0dcb4}
.mode-pill::before{content:"●";margin-right:6px;font-size:9px;vertical-align:middle}
@media (max-width:720px){.mode-pill{display:none}}

/* ---------------- Shell / views ---------------- */
.shell{max-width:1360px;margin:0 auto;padding:22px}
.view{display:none}
.view.active{display:block}

.panel{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  padding:18px 20px;margin-bottom:16px;box-shadow:var(--shadow);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.panel-head h2{font-size:15px}
.panel-head.sub{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}
.panel-head.sub h3{font-size:13px;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-soft)}
.muted{color:var(--ink-faint);font-size:12.5px;margin:2px 0 12px}

/* ---------------- Workspace layout ---------------- */
.workspace{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:16px;align-items:start}
.preview-rail{position:sticky;top:78px;display:flex;flex-direction:column;gap:16px}

/* ---------------- Fields ---------------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:flex;flex-direction:column;gap:5px}
.field.field-wide{grid-column:1 / -1}
.field > span{font-size:11.5px;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em}
input,select,textarea{
  border:1px solid var(--line-hard);border-radius:8px;padding:9px 11px;font-size:13.5px;
  background:var(--paper);color:var(--ink);transition:.15s;width:100%;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--cobalt);box-shadow:0 0 0 3px rgba(37,64,196,.14);
}
textarea{resize:vertical;line-height:1.55}

/* Serial chip — the document control stamp (signature element) */
.serial-chip{
  display:inline-flex;align-items:stretch;border:1.5px solid var(--cobalt);
  border-radius:7px;overflow:hidden;font-family:var(--mono);
}
.serial-label{background:var(--cobalt);color:#fff;padding:5px 9px;font-size:11px;font-weight:600;letter-spacing:.12em;display:flex;align-items:center}
.serial-value{padding:5px 12px;font-size:13px;font-weight:600;color:var(--cobalt);letter-spacing:.02em;display:flex;align-items:center}

/* Tax toggle */
.tax-toggle{display:flex;align-items:center;gap:14px;margin-top:14px;flex-wrap:wrap}
.tax-toggle > span{font-size:11.5px;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em}
.segmented{display:inline-flex;border:1px solid var(--line-hard);border-radius:8px;overflow:hidden}
.segmented button{border:none;background:var(--paper);padding:8px 14px;font-size:12.5px;color:var(--ink-soft);border-right:1px solid var(--line-hard)}
.segmented button:last-child{border-right:none}
.segmented button.active{background:var(--cobalt);color:#fff;font-weight:600}

/* ---------------- Line items ---------------- */
.add-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.catalog-select{width:auto;min-width:150px;padding:7px 9px;font-size:12.5px}
#catalogItem{min-width:220px;max-width:340px}
.items-wrap{overflow-x:auto;margin:0 -20px;padding:0 20px}
table.items{width:100%;border-collapse:collapse;min-width:820px}
table.items th{
  font-size:10.5px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-soft);
  text-align:left;padding:6px 8px;border-bottom:1.5px solid var(--line-hard);font-weight:600;
}
table.items td{padding:5px 6px;border-bottom:1px solid var(--line);vertical-align:middle}
table.items .c-num{text-align:right}
table.items input,table.items select{padding:6px 7px;font-size:12.5px;border-color:var(--line)}
td.cell-num input{text-align:right;font-family:var(--mono)}
.c-vert{width:150px}.c-hsn{width:88px}.c-unit{width:78px}.c-x{width:30px}
.c-num{width:74px}
.line-amount{font-family:var(--mono);font-weight:600;font-size:12.5px;text-align:right;white-space:nowrap;color:var(--ink)}
.row-del{border:none;background:transparent;color:var(--ink-faint);font-size:16px;line-height:1;padding:4px 6px;border-radius:6px}
.row-del:hover{background:#fbe7ea;color:var(--danger)}
.empty-items{color:var(--ink-faint);font-size:13px;padding:22px 4px;text-align:center;border:1px dashed var(--line-hard);border-radius:8px;margin-top:4px}
.vert-dot{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:6px;vertical-align:middle}

/* ---------------- Actions card ---------------- */
.actions-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--shadow)}
.totals-mini{font-family:var(--mono);font-size:13px;margin-bottom:14px}
.totals-mini .tline{display:flex;justify-content:space-between;padding:3px 0;color:var(--ink-soft)}
.totals-mini .tline.grand{border-top:1.5px solid var(--line-hard);margin-top:6px;padding-top:8px;color:var(--ink);font-size:18px;font-weight:600}
.totals-mini .tline.grand span:last-child{color:var(--cobalt)}
.action-buttons{display:flex;flex-direction:column;gap:8px}
.action-buttons.left{flex-direction:row;margin-top:20px}
.btn{border-radius:8px;padding:11px 16px;font-size:13.5px;font-weight:600;border:1px solid transparent;transition:.15s}
.btn-primary{background:var(--cobalt);color:#fff}
.btn-primary:hover{background:var(--cobalt-dk)}
.btn-ghost{background:var(--paper);border-color:var(--line-hard);color:var(--ink)}
.btn-ghost:hover{border-color:var(--cobalt);color:var(--cobalt)}
.btn-sm{padding:5px 10px;font-size:12px}
.save-hint{font-size:11.5px;color:var(--ink-faint);margin:10px 0 0;text-align:center}

/* ---------------- Document preview ---------------- */
.preview-scroll{max-height:calc(100vh - 320px);overflow:auto;border-radius:var(--r);border:1px solid var(--line);background:#dfe4ee;padding:14px}
.doc{background:#fff;color:#111;font-size:11px;line-height:1.45;padding:26px;box-shadow:0 6px 20px rgba(0,0,0,.12);border-radius:4px}
.doc h1{font-size:17px}
.doc-top{display:flex;justify-content:space-between;gap:18px;border-bottom:2px solid var(--cobalt);padding-bottom:14px}
.doc-co{display:flex;gap:12px;align-items:flex-start}
.doc-co img{width:52px;height:52px;border-radius:50%;object-fit:cover}
.doc-co .co-name{font-family:var(--disp);font-weight:700;font-size:15px;color:var(--cobalt-dk)}
.doc-co .co-line{font-size:10px;color:#555}
.doc-meta{text-align:right;font-size:10px;color:#333;min-width:150px}
.doc-meta .doc-ref{font-family:var(--mono);font-weight:600;color:var(--cobalt);font-size:12px;border:1.5px solid var(--cobalt);border-radius:6px;padding:4px 8px;display:inline-block;margin-bottom:6px}
.doc-title{font-family:var(--disp);letter-spacing:.22em;text-transform:uppercase;font-size:12px;color:#333;text-align:center;margin:14px 0}
.doc-parties{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:12px}
.doc-parties .lbl{font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:#888;margin-bottom:3px}
.doc-parties .box{border:1px solid #e2e2e2;border-radius:5px;padding:9px 11px;background:#fafbfe}
.doc-parties strong{font-size:11.5px}
.doc table.dt{width:100%;border-collapse:collapse;margin:6px 0}
.doc table.dt th{background:var(--cobalt);color:#fff;font-size:8.5px;text-transform:uppercase;letter-spacing:.05em;padding:6px 6px;text-align:left;font-weight:600}
.doc table.dt th.n,.doc table.dt td.n{text-align:right}
.doc table.dt td{padding:6px 6px;border-bottom:1px solid #eee;font-size:10px;vertical-align:top}
.doc table.dt td.mono{font-family:var(--mono)}
.doc .totbox{display:flex;justify-content:flex-end;margin-top:8px}
.doc .totbl{width:58%;font-size:10.5px}
.doc .totbl .tr{display:flex;justify-content:space-between;padding:3px 4px}
.doc .totbl .tr.g{background:var(--cobalt);color:#fff;font-weight:700;font-size:12px;border-radius:5px;padding:7px 8px;margin-top:4px;font-family:var(--mono)}
.doc .words{font-size:9.5px;font-style:italic;color:#555;margin-top:6px;border-top:1px dashed #ccc;padding-top:6px}
.doc .sect{margin-top:12px}
.doc .sect .lbl{font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:#888;margin-bottom:3px}
.doc .terms{font-size:9px;color:#444;white-space:pre-wrap;line-height:1.5}
.doc .sign{display:flex;justify-content:space-between;margin-top:26px;font-size:10px}
.doc .sign .sb{width:45%}
.doc .sign .line{border-top:1px solid #333;margin-top:34px;padding-top:4px;color:#555}
.doc .foot{margin-top:16px;border-top:1px solid #eee;padding-top:8px;font-size:8.5px;color:#999;text-align:center}
.doc-empty{color:#aaa;text-align:center;padding:40px 10px;font-size:11px}

/* status chip */
.chip{display:inline-block;font-size:11px;font-weight:600;padding:3px 9px;border-radius:999px;letter-spacing:.02em}
.chip.Draft{background:#eef1f7;color:#5a6a86}
.chip.Sent{background:#e7effd;color:#2456c9}
.chip.Accepted{background:var(--ok-bg);color:var(--ok)}
.chip.Rejected{background:#fbe7ea;color:var(--danger)}
.chip.Expired{background:var(--warn-bg);color:var(--warn)}

/* ---------------- Records ---------------- */
.records-head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:flex-end;margin-bottom:16px}
.records-tools{display:flex;gap:8px;flex-wrap:wrap}
.records-tools input{min-width:260px}
.table-scroll{overflow-x:auto}
.records-table{width:100%;border-collapse:collapse;min-width:640px}
.records-table th{font-size:10.5px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-soft);text-align:left;padding:9px 10px;border-bottom:1.5px solid var(--line-hard)}
.records-table td{padding:10px;border-bottom:1px solid var(--line);font-size:13px}
.records-table td.c-num{text-align:right;font-family:var(--mono);font-weight:600}
.records-table tr:hover{background:#f6f8fc}
.rec-ref{font-family:var(--mono);font-weight:600;color:var(--cobalt)}
.c-actions{text-align:right;white-space:nowrap}
.c-actions .btn{margin-left:6px}
.empty-records{display:none;color:var(--ink-faint);text-align:center;padding:30px;font-size:13px}

.settings-grid + .panel-head{margin-top:20px}

/* ---------------- Toast ---------------- */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 20px;border-radius:10px;font-size:13.5px;font-weight:500;
  box-shadow:0 10px 30px rgba(0,0,0,.25);opacity:0;pointer-events:none;transition:.25s;z-index:100;max-width:90vw;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:var(--danger)}
.toast .t-ref{font-family:var(--mono);font-weight:600}

/* ---------------- Responsive ---------------- */
@media (max-width:1040px){
  .workspace{grid-template-columns:1fr}
  .preview-rail{position:static}
  .preview-scroll{max-height:none}
}
@media (max-width:640px){
  .shell{padding:14px}
  .grid-2{grid-template-columns:1fr}
  .nav-btn{padding:7px 11px;font-size:12px}
  .brand-sub{display:none}
  .topbar{padding:10px 14px}
}

/* ---------------- Print ---------------- */
#printMount{display:none}
@media print{
  body{background:#fff}
  .topbar,.shell,.toast{display:none !important}
  #printMount{display:block}
  #printMount .doc{box-shadow:none;border-radius:0;padding:14mm;font-size:11px}
  @page{size:A4;margin:0}
}

/* ===================== Login page ===================== */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;
  background:linear-gradient(135deg,#1B2F94,#2540C4 55%,#3A34C9);}
.login-wrap{width:100%;max-width:400px}
.login-card{background:var(--paper);border-radius:16px;padding:30px 28px;box-shadow:0 24px 60px rgba(0,0,0,.35)}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.login-brand img{width:46px;height:46px;border-radius:50%;box-shadow:0 0 0 1px var(--line)}
.login-name{font-family:var(--disp);font-weight:700;font-size:18px;letter-spacing:-.02em}
.login-sub{font-size:11px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.14em}
.login-title{font-size:22px;margin-bottom:4px}
.login-hint{font-size:12.5px;color:var(--ink-faint);margin:0 0 18px}
.login-card .field{margin-bottom:14px}
.login-btn{width:100%;margin-top:6px;padding:12px}
.login-error{color:var(--danger);font-size:12.5px;min-height:16px;margin-bottom:4px}
.login-foot{text-align:center;color:rgba(255,255,255,.75);font-size:11px;margin-top:16px;letter-spacing:.03em}

/* ===================== User menu ===================== */
.user-menu{position:relative}
.user-btn{display:flex;align-items:center;gap:9px;background:var(--paper);border:1px solid var(--line-hard);
  border-radius:999px;padding:5px 10px 5px 5px;transition:.15s}
.user-btn:hover{border-color:var(--cobalt)}
.user-avatar{width:30px;height:30px;border-radius:50%;background:var(--cobalt);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-family:var(--disp)}
.user-info{display:flex;flex-direction:column;line-height:1.15;text-align:left}
.user-name{font-size:13px;font-weight:600;color:var(--ink)}
.user-role{font-size:10.5px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.08em}
.user-caret{color:var(--ink-faint);font-size:11px}
.user-dropdown{position:absolute;right:0;top:calc(100% + 8px);background:var(--paper);border:1px solid var(--line);
  border-radius:10px;box-shadow:var(--shadow);min-width:180px;padding:6px;z-index:50}
.dropdown-item{display:block;width:100%;text-align:left;border:none;background:transparent;padding:9px 12px;
  border-radius:7px;font-size:13px;color:var(--ink)}
.dropdown-item:hover{background:var(--canvas);color:var(--cobalt)}
@media (max-width:720px){.user-info{display:none}}

/* ===================== Document seal ===================== */
.doc .doc-seal{display:flex;flex-direction:column;align-items:flex-end;margin-top:24px}
.doc .doc-seal .seal-text{font-size:10px;color:#333;margin-bottom:4px}
.doc .doc-seal .seal-img{width:96px;height:auto;opacity:.96}

/* ===================== Modal ===================== */
.modal-overlay{position:fixed;inset:0;background:rgba(15,24,38,.5);display:flex;align-items:center;justify-content:center;z-index:200;padding:20px}
.modal-overlay[hidden]{display:none}
.modal{background:var(--paper);border-radius:14px;padding:24px;width:100%;max-width:380px;box-shadow:0 24px 60px rgba(0,0,0,.3)}
.modal h2{font-size:17px;margin-bottom:16px}
.modal .field{margin-bottom:12px}
.modal .action-buttons.left{margin-top:8px}

@media print{ .user-menu{display:none !important} }