:root{
  --navy:#122A42;
  --navy-2:#1C3E5E;
  --navy-3:#28527A;
  --amber:#E39027;
  --amber-dark:#B5701A;
  --paper:#FBFAF7;
  --ink:#171D24;
  --muted:#66707C;
  --line:#DCE2E7;
  --line-2:#EDF0F3;
  --success:#2B8A4E;
  --success-bg:#E7F5EC;
  --danger:#C6432F;
  --danger-bg:#FBEAE6;
  --draft:#6E7A87;
  --draft-bg:#EBEEF1;
  --sent-bg:#E7F5EC;
  --shadow: 0 1px 2px rgba(18,42,66,.06), 0 8px 24px -12px rgba(18,42,66,.18);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:'Inter',sans-serif;
  color:var(--ink);
  background:
    linear-gradient(180deg, var(--navy) 0px, var(--navy) 148px, transparent 148px),
    #F1F3F5;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
.mono{ font-family:'IBM Plex Mono',monospace; }
a{ color:inherit; }
button{ font-family:inherit; cursor:pointer; }
input, select, textarea{ font-family:inherit; }
::selection{ background:var(--amber); color:#fff; }
:focus-visible{ outline:2px solid var(--amber); outline-offset:2px; }

/* ---------- Shell / header ---------- */
#shell{ max-width:1240px; margin:0 auto; padding:0 24px 64px; }
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:28px 0 22px; gap:16px; flex-wrap:wrap;
}
.brand{ display:flex; align-items:center; gap:14px; }
.brand-mark{
  width:44px; height:44px; border-radius:10px;
  background:#fff; padding:5px;
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:'IBM Plex Mono',monospace; font-weight:700; font-size:15px;
  box-shadow:0 6px 16px -6px rgba(0,0,0,.35);
  flex-shrink:0;
}
.brand-text h1{ margin:0; font-size:18px; font-weight:700; color:#fff; letter-spacing:.2px; }
.brand-text p{ margin:2px 0 0; font-size:12.5px; color:#AEC0D2; }

.tabs{
  display:flex; gap:4px; background:rgba(255,255,255,.08);
  padding:4px; border-radius:11px; border:1px solid rgba(255,255,255,.12);
}
.tab-btn{
  border:none; background:transparent; color:#CBD9E5;
  padding:9px 16px; border-radius:8px; font-size:13.5px; font-weight:600;
  transition:background .15s, color .15s;
  text-decoration:none; display:inline-flex; align-items:center;
}
.tab-btn.active{ background:#fff; color:var(--navy); }
.tab-btn:hover:not(.active){ color:#fff; }

.card{
  background:#fff; border-radius:14px; border:1px solid var(--line);
  box-shadow:var(--shadow);
}

/* ---------- Stat cards ---------- */
.stats{ display:grid; grid-template-columns:repeat(5,1fr); gap:14px; margin-bottom:20px; }
.stat{ padding:18px 18px 16px; }
.stat .num{ font-family:'IBM Plex Mono',monospace; font-size:26px; font-weight:600; color:var(--navy); line-height:1; }
.stat .lbl{ margin-top:8px; font-size:12.5px; color:var(--muted); font-weight:500; }
.stat.accent .num{ color:var(--amber-dark); }
@media(max-width:920px){ .stats{ grid-template-columns:repeat(2,1fr); } }

/* ---------- Toolbar ---------- */
.toolbar{ display:flex; gap:10px; align-items:center; margin-bottom:16px; flex-wrap:wrap; }
.search-wrap{ position:relative; flex:1; min-width:220px; }
.search-wrap svg{ position:absolute; left:12px; top:50%; transform:translateY(-50%); opacity:.45; }
input.search{
  width:100%; padding:10px 12px 10px 36px; border-radius:9px; border:1px solid var(--line);
  font-size:13.5px; background:#fff;
}
select.filter{
  padding:10px 30px 10px 12px; border-radius:9px; border:1px solid var(--line);
  font-size:13.5px; background:#fff; color:var(--ink);
}
.btn{
  display:inline-flex; align-items:center; gap:7px; justify-content:center;
  padding:10px 16px; border-radius:9px; border:1px solid transparent;
  font-size:13.5px; font-weight:600; white-space:nowrap;
  transition:filter .12s, transform .05s;
  text-decoration:none;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--amber); color:#fff; }
.btn-primary:hover{ filter:brightness(1.06); }
.btn-navy{ background:var(--navy); color:#fff; }
.btn-navy:hover{ filter:brightness(1.15); }
.btn-ghost{ background:#fff; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ background:#F5F7F8; }
.btn-success{ background:var(--success); color:#fff; }
.btn-success:hover{ filter:brightness(1.08); }
.btn-danger-ghost{ background:#fff; color:var(--danger); border-color:var(--line); }
.btn-danger-ghost:hover{ background:var(--danger-bg); }
.btn-icon{ padding:8px; }
.btn[disabled]{ opacity:.45; cursor:not-allowed; }
.btn-sm{ padding:7px 11px; font-size:12.5px; border-radius:7px; }

/* ---------- List table ---------- */
.list-table{ width:100%; border-collapse:collapse; }
.list-table thead th{
  text-align:left; font-size:11.5px; text-transform:uppercase; letter-spacing:.06em;
  color:var(--muted); font-weight:600; padding:13px 16px; border-bottom:1px solid var(--line);
}
.list-table tbody td{ padding:14px 16px; border-bottom:1px solid var(--line-2); font-size:13.5px; vertical-align:middle; }
.list-table tbody tr:last-child td{ border-bottom:none; }
.list-table tbody tr:hover{ background:#FAFBFC; }
.ref-cell{ font-family:'IBM Plex Mono',monospace; font-weight:600; color:var(--navy); }
.ref-cell .date{ display:block; font-weight:400; color:var(--muted); font-size:11.5px; margin-top:2px; font-family:'Inter',sans-serif; }
.company-cell .name{ font-weight:600; }
.company-cell .sub{ color:var(--muted); font-size:12px; margin-top:2px; }
.amount-cell{ font-family:'IBM Plex Mono',monospace; font-weight:600; }
.badge{
  display:inline-flex; align-items:center; gap:5px; padding:4px 10px 4px 8px;
  border-radius:999px; font-size:11.5px; font-weight:600;
}
.badge:before{ content:''; width:6px; height:6px; border-radius:50%; }
.badge.draft{ background:var(--draft-bg); color:var(--draft); }
.badge.draft:before{ background:var(--draft); }
.badge.completed{ background:#FDF1E1; color:var(--amber-dark); }
.badge.completed:before{ background:var(--amber); }
.badge.sent{ background:var(--sent-bg); color:var(--success); }
.badge.sent:before{ background:var(--success); }
.row-actions{ display:flex; gap:6px; justify-content:flex-end; }
.empty-state{ padding:70px 20px; text-align:center; color:var(--muted); }
.empty-state svg{ opacity:.35; margin-bottom:14px; }
.empty-state h3{ margin:0 0 6px; color:var(--ink); font-size:15px; }
.empty-state p{ margin:0 0 18px; font-size:13.5px; }

/* ---------- Form layout ---------- */
.form-header{ display:flex; align-items:center; justify-content:space-between; margin-bottom:18px; gap:12px; flex-wrap:wrap; }
.back-link{ display:inline-flex; align-items:center; gap:6px; color:#DCE6EF; font-size:13px; font-weight:600; margin-bottom:14px; text-decoration:none; }
.back-link:hover{ color:#fff; }
.stepper{ display:flex; align-items:center; gap:0; }
.step{ display:flex; align-items:center; gap:8px; }
.step .dot{
  width:24px; height:24px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:11px; font-weight:700; background:var(--line-2); color:var(--muted); font-family:'IBM Plex Mono',monospace;
  border:2px solid var(--line-2);
}
.step.done .dot{ background:var(--success); border-color:var(--success); color:#fff; }
.step.current .dot{ background:#fff; border-color:var(--amber); color:var(--amber-dark); }
.step .lbl{ font-size:12px; font-weight:600; color:var(--muted); }
.step.done .lbl, .step.current .lbl{ color:var(--ink); }
.step-line{ width:28px; height:2px; background:var(--line); margin:0 4px; }

.form-grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:20px; align-items:flex-start; }
@media(max-width:980px){ .form-grid{ grid-template-columns:1fr; } }

.section{ padding:22px 22px 24px; margin-bottom:16px; }
.section h2{ margin:0 0 4px; font-size:14.5px; font-weight:700; }
.section .hint{ margin:0 0 16px; font-size:12px; color:var(--muted); }
.field-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.field-grid.cols-3{ grid-template-columns:1fr 1fr 1fr; }
@media(max-width:560px){ .field-grid, .field-grid.cols-3{ grid-template-columns:1fr; } }
.field label{ display:block; font-size:12px; font-weight:600; color:var(--muted); margin-bottom:6px; }
.field label .req{ color:var(--danger); }
.field input, .field select, .field textarea{
  width:100%; padding:9px 11px; border:1px solid var(--line); border-radius:8px; font-size:13.5px; color:var(--ink);
  background:#fff;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--amber); }
.field textarea{ resize:vertical; min-height:64px; }
.field{ margin-bottom:14px; }
.field:last-child{ margin-bottom:0; }

/* items table */
.items-table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:10px; }
table.items{ width:100%; border-collapse:collapse; min-width:640px; }
table.items thead th{
  background:#F7F8F9; text-align:left; font-size:10.5px; text-transform:uppercase; letter-spacing:.05em;
  color:var(--muted); font-weight:700; padding:9px 10px; border-bottom:1px solid var(--line);
}
table.items tbody td{ padding:7px 8px; border-bottom:1px solid var(--line-2); }
table.items tbody tr:last-child td{ border-bottom:none; }
table.items input, table.items select{ border:1px solid transparent; background:transparent; padding:7px 8px; border-radius:6px; font-size:13px; width:100%; }
table.items input:hover, table.items select:hover{ border-color:var(--line); }
table.items input:focus, table.items select:focus{ border-color:var(--amber); background:#fff; }
table.items td.num input{ text-align:right; font-family:'IBM Plex Mono',monospace; }
table.items td.sn{ width:34px; text-align:center; color:var(--muted); font-family:'IBM Plex Mono',monospace; font-size:12.5px; }
table.items td.total-cell{ text-align:right; font-family:'IBM Plex Mono',monospace; font-weight:600; white-space:nowrap; padding-right:12px; }
table.items td.rm{ width:30px; text-align:center; }
.rm-btn{ border:none; background:transparent; color:var(--muted); width:24px; height:24px; border-radius:6px; font-size:15px; line-height:1; }
.rm-btn:hover{ background:var(--danger-bg); color:var(--danger); }
.add-row-btn{
  display:flex; align-items:center; gap:6px; width:100%; justify-content:center;
  padding:10px; border:1px dashed var(--line); background:#FAFBFC; color:var(--navy-3);
  font-size:12.5px; font-weight:600; border-radius:0 0 9px 9px; border-top:none;
}
.add-row-btn:hover{ background:#F1F4F7; }

.totals-box{ margin-top:14px; display:flex; justify-content:flex-end; }
.totals-inner{ width:100%; max-width:320px; }
.totals-inner .trow{ display:flex; justify-content:space-between; padding:7px 0; font-size:13px; color:var(--muted); }
.totals-inner .trow span:last-child{ font-family:'IBM Plex Mono',monospace; color:var(--ink); font-weight:500; }
.totals-inner .trow.grand{ border-top:1.5px solid var(--ink); margin-top:6px; padding-top:12px; }
.totals-inner .trow.grand span:first-child{ font-weight:700; color:var(--ink); font-size:13.5px; }
.totals-inner .trow.grand span:last-child{ font-weight:700; font-size:17px; color:var(--amber-dark); }

/* action bar */
.action-bar{
  display:flex; gap:10px; flex-wrap:wrap; padding:16px 22px; position:sticky; bottom:16px;
  margin-top:4px; background:#fff; border-radius:12px; border:1px solid var(--line); box-shadow:var(--shadow);
}
.action-bar .spacer{ flex:1; }

/* preview doc */
.preview-wrap{ position:sticky; top:16px; }
.preview-frame{ padding:0; overflow:hidden; }
.preview-scale{ width:100%; overflow:auto; max-height:78vh; padding:16px; background:#EAEDEF; border-radius:14px; }
.doc{
  width:680px; margin:0 auto; background:#fff; padding:40px 44px 34px; position:relative;
  font-size:12px; color:#22282F; box-shadow:0 2px 10px rgba(0,0,0,.08); border:1px solid #E4E7EA;
}
.doc .stamp{
  position:absolute; top:96px; right:38px; border:3px solid var(--draft); color:var(--draft);
  padding:5px 14px; font-weight:800; font-size:15px; letter-spacing:.12em; transform:rotate(-8deg);
  border-radius:6px; opacity:.55; font-family:'IBM Plex Mono',monospace;
}
.doc .stamp.sent{ border-color:var(--success); color:var(--success); }
.doc-head{ display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:18px; }
.doc-head .co{ font-weight:800; font-size:15px; color:var(--navy); letter-spacing:.01em; }
.doc-head .co small{ display:block; font-weight:500; color:var(--muted); font-size:10px; margin-top:2px; }
.doc-head .tax{ text-align:right; font-size:10.5px; color:var(--muted); }
.doc-rule{ height:3px; background:linear-gradient(90deg,var(--navy),var(--amber)); border-radius:2px; margin-bottom:16px; }
.doc-meta{ display:grid; grid-template-columns:1fr 1fr; gap:2px 18px; margin-bottom:14px; }
.doc-meta .mrow{ display:flex; font-size:11.5px; padding:2px 0; }
.doc-meta .mrow .k{ width:108px; color:var(--muted); flex-shrink:0; }
.doc-meta .mrow .v{ font-weight:600; }
.doc-intro{ font-size:11.5px; margin:14px 0 8px; font-style:italic; color:#3A4149; }
table.doc-items{ width:100%; border-collapse:collapse; margin-bottom:2px; }
table.doc-items thead th{
  background:var(--navy); color:#fff; font-size:9.5px; text-transform:uppercase; letter-spacing:.04em;
  padding:6px 6px; text-align:left; font-weight:700;
}
table.doc-items thead th.r{ text-align:right; }
table.doc-items tbody td{ padding:6px 6px; font-size:11px; border-bottom:1px solid #EEF0F2; vertical-align:top; }
table.doc-items tbody td.r{ text-align:right; font-family:'IBM Plex Mono',monospace; }
table.doc-items tbody td.c{ text-align:center; }
.doc-totals{ display:flex; justify-content:flex-end; margin-top:4px; }
.doc-totals table{ border-collapse:collapse; width:260px; }
.doc-totals td{ padding:4px 4px; font-size:11px; }
.doc-totals td.l{ color:var(--muted); }
.doc-totals td.r{ text-align:right; font-family:'IBM Plex Mono',monospace; font-weight:600; }
.doc-totals tr.grand td{ border-top:1.5px solid var(--ink); font-weight:800; font-size:12.5px; padding-top:7px; color:var(--amber-dark); }
.doc-terms{ margin-top:16px; }
.doc-terms .mrow{ display:flex; font-size:11px; padding:2.5px 0; }
.doc-terms .mrow .k{ width:108px; color:var(--muted); flex-shrink:0; }
.doc-terms .mrow .v{ font-weight:500; }
.doc-foot{ margin-top:24px; text-align:center; border-top:1px solid #EEF0F2; padding-top:12px; }
.doc-foot .name{ font-weight:800; font-size:11.5px; color:var(--navy); }
.doc-foot .addr{ font-size:9.5px; color:var(--muted); margin-top:3px; line-height:1.5; white-space:pre-line; }

/* toast */
#toast-host{ position:fixed; bottom:20px; left:50%; transform:translateX(-50%); z-index:9999; display:flex; flex-direction:column; gap:8px; align-items:center; }
.toast{
  background:var(--ink); color:#fff; padding:11px 18px; border-radius:9px; font-size:13px; font-weight:500;
  box-shadow:0 8px 24px rgba(0,0,0,.25); display:flex; align-items:center; gap:9px;
  animation:toast-in .18s ease-out;
}
.toast.success{ background:var(--success); }
.toast.error{ background:var(--danger); }
@keyframes toast-in{ from{ opacity:0; transform:translateY(8px);} to{opacity:1; transform:translateY(0);} }

/* modal */
.modal-backdrop{ position:fixed; inset:0; background:rgba(15,23,32,.55); display:flex; align-items:center; justify-content:center; z-index:9998; padding:20px; }
.modal{ background:#fff; border-radius:14px; max-width:440px; width:100%; padding:26px; box-shadow:0 20px 60px rgba(0,0,0,.3); }
.modal h3{ margin:0 0 8px; font-size:16px; }
.modal p{ margin:0 0 18px; font-size:13.5px; color:var(--muted); line-height:1.5; }
.modal .row{ display:flex; gap:10px; justify-content:flex-end; }
.modal-field{ margin-bottom:12px; }
.modal-field label{ display:block; font-size:11.5px; font-weight:600; color:var(--muted); margin-bottom:4px; }
.modal-field .box{ padding:9px 11px; border:1px solid var(--line); border-radius:8px; font-size:13px; background:#FAFBFC; white-space:pre-wrap; }

.status-pill-lg{ display:inline-flex; align-items:center; gap:6px; font-size:12px; font-weight:700; padding:5px 12px; border-radius:999px; }

#pdf-capture{ position:fixed; left:-99999px; top:0; }
.sr-only{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }

/* ---------- Login gate ---------- */
.login-wrap{ min-height:60vh; display:flex; align-items:center; justify-content:center; padding:40px 0; }
.login-card{ background:#fff; border-radius:14px; border:1px solid var(--line); box-shadow:var(--shadow); width:100%; max-width:360px; padding:32px 28px; text-align:center; }
.login-logo{ width:56px; height:56px; margin:0 auto 16px; border-radius:12px; background:#fff; border:1px solid var(--line); padding:6px; display:flex; align-items:center; justify-content:center; }
.login-logo img{ width:100%; height:100%; object-fit:contain; }
.login-card h2{ margin:0 0 6px; font-size:17px; }
.login-card .hint{ margin:0 0 20px; font-size:12.5px; color:var(--muted); }
.login-card .field{ text-align:left; }
.login-error{ margin:-4px 0 14px; font-size:12.5px; color:var(--danger); text-align:left; }
.logout-btn{ background:transparent; border:1px solid rgba(255,255,255,.25); color:#CBD9E5; padding:8px 14px; border-radius:8px; font-size:12.5px; font-weight:600; }
.logout-btn:hover{ background:rgba(255,255,255,.1); color:#fff; }