:root{
  --ink:#132f4c; --ink-2:#0e2540;
  --accent:#e11d2a; --accent-dark:#b8151f;
  --text:#1c2b3a; --text-2:#54657a; --muted:#8695a4;
  --line:#e7edf3; --line-2:#f0f4f8;
  --bg:#eaeff5; --surface:#ffffff; --surface-2:#f6f9fc;
  --ok:#12a150; --ok-bg:#e5f6ec; --warn:#d98500; --warn-bg:#fbf1dd;
  --danger:#e11d2a; --danger-bg:#fdeaeb; --info:#2563a8; --info-bg:#e6eff8;
  --r-sm:9px; --r:13px; --r-lg:18px;
  --sh-sm:0 1px 2px rgba(19,47,76,.05), 0 1px 3px rgba(19,47,76,.06);
  --sh:0 2px 8px rgba(19,47,76,.05), 0 10px 28px rgba(19,47,76,.07);
  --sh-lg:0 16px 40px rgba(19,47,76,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:"Inter","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:14px; line-height:1.5; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
svg{flex-shrink:0}
.num{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.muted{color:var(--muted)}
.icon{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ---------------- layout ---------------- */
.app{display:flex;min-height:100vh}
.side{
  width:248px;position:fixed;top:0;bottom:0;left:0;display:flex;flex-direction:column;
  background:linear-gradient(180deg,#1a3a5c 0%,#122b45 100%);
  color:#b9c8d8;box-shadow:2px 0 18px rgba(9,24,40,.14);z-index:20;
  transition:transform .25s ease;overflow-y:auto;
}
.side .brand{display:flex;align-items:center;gap:12px;padding:20px 20px 18px}
.side .brand .logo{
  width:42px;height:42px;border-radius:11px;background:#fff;color:var(--accent);
  display:flex;align-items:center;justify-content:center;white-space:nowrap;
  font-weight:800;font-size:16px;letter-spacing:-.3px;
  box-shadow:0 4px 12px rgba(0,0,0,.18)
}
.side .brand .logo span{color:var(--ink)}
.side .brand .name{font-weight:700;color:#fff;font-size:15px;line-height:1.15}
.side .brand .name small{display:block;font-weight:400;font-size:10.5px;color:#8ba0b5;letter-spacing:.04em;margin-top:2px}
.side .navlabel{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:#6f88a0;padding:14px 22px 6px;font-weight:600}
.side nav{display:flex;flex-direction:column;padding:4px 12px;gap:2px}
.side nav a{
  display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:10px;
  color:#c2d0de;font-weight:500;font-size:14px;transition:.15s;position:relative
}
.side nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.side nav a.active{background:linear-gradient(90deg,var(--accent),#c81824);color:#fff;box-shadow:0 6px 16px rgba(225,29,42,.32)}
.side nav a.active .icon{stroke:#fff}
.side .spacer{flex:1}
.side .userbox{margin:12px;padding:12px;border-radius:12px;background:rgba(255,255,255,.06);display:flex;align-items:center;gap:11px}
.side .userbox .av{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.side .userbox .u{font-size:13px;color:#fff;font-weight:600;line-height:1.2}
.side .userbox .u small{display:block;font-weight:400;color:#93a7bb;font-size:11px}
.side .userbox a{margin-left:auto;color:#93a7bb;display:grid;place-items:center;padding:6px;border-radius:8px}
.side .userbox a:hover{color:#fff;background:rgba(255,255,255,.08)}
.side .userbox .logout-form{margin-left:auto;display:flex}
.side .userbox .logout-btn{background:none;border:none;cursor:pointer;color:#93a7bb;display:grid;place-items:center;padding:6px;border-radius:8px}
.side .userbox .logout-btn:hover{color:#fff;background:rgba(255,255,255,.08)}

.main{margin-left:248px;flex:1;display:flex;flex-direction:column;min-width:0}
.top{
  background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);padding:18px 30px;display:flex;
  justify-content:space-between;align-items:center;position:sticky;top:0;z-index:10
}
.top h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.2px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.top .actions{display:flex;gap:10px;flex-shrink:0}
.top-left{display:flex;align-items:center;gap:12px;min-width:0}
.hamburger{display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--ink);
  cursor:pointer;padding:0;box-shadow:var(--sh-sm);flex-shrink:0}
.hamburger:active{background:var(--surface-2)}
.hamburger .icon{width:22px;height:22px}
.nav-backdrop{position:fixed;inset:0;background:rgba(9,24,40,.55);z-index:40;opacity:0;pointer-events:none;transition:opacity .2s}
.content{padding:26px 30px;max-width:1240px;width:100%}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;gap:8px;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);color:var(--text);
  padding:10px 16px;border-radius:10px;font-weight:600;font-size:13.5px;font-family:inherit;
  cursor:pointer;transition:.14s;box-shadow:var(--sh-sm);white-space:nowrap
}
.btn:hover{border-color:#d3dee8;background:var(--surface-2);transform:translateY(-1px);box-shadow:var(--sh)}
.btn:active{transform:translateY(0)}
.btn .icon{width:17px;height:17px}
.btn.primary{background:linear-gradient(180deg,#1d4571,var(--ink));color:#fff;border-color:transparent}
.btn.primary:hover{background:linear-gradient(180deg,#1d4571,var(--ink-2))}
.btn.accent{background:linear-gradient(180deg,#ef2634,var(--accent));color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(225,29,42,.28)}
.btn.accent:hover{background:linear-gradient(180deg,#e11d2a,var(--accent-dark))}
.btn.sm{padding:7px 12px;font-size:12.5px;border-radius:9px}
.btn.ghost{background:transparent;border-color:transparent;box-shadow:none;color:var(--text-2)}
.btn.ghost:hover{background:var(--line-2);color:var(--text);box-shadow:none}
.btn.block{width:100%}

/* ---------------- cards ---------------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--sh-sm);transition:.16s}
.card:hover{box-shadow:var(--sh);transform:translateY(-2px)}
.stat{display:flex;flex-direction:column;gap:2px}
.stat .head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.stat h3{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}
.stat .chip{width:40px;height:40px;border-radius:11px;display:grid;place-items:center}
.stat .chip .icon{width:20px;height:20px}
.chip.blue{background:var(--info-bg);color:var(--info)}
.chip.red{background:var(--danger-bg);color:var(--danger)}
.chip.green{background:var(--ok-bg);color:var(--ok)}
.chip.amber{background:var(--warn-bg);color:var(--warn)}
.stat .big{font-size:27px;font-weight:800;color:var(--ink);letter-spacing:-.5px;line-height:1.1}
.stat .sub{font-size:12px;color:var(--muted);margin-top:3px}

/* ---------------- panels & tables ---------------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-sm)}
.panel .ph{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.panel .ph h2{margin:0;font-size:15.5px;font-weight:700}
table.grid{width:100%;border-collapse:collapse}
table.grid th{background:var(--surface-2);text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:12px 18px;font-weight:600;border-bottom:1px solid var(--line)}
table.grid th.r,table.grid td.r{text-align:right}
table.grid td{padding:13px 18px;border-top:1px solid var(--line-2);font-size:13.5px}
table.grid th,table.grid td{white-space:nowrap}
table.grid tbody tr{transition:.12s}
table.grid tbody tr:hover td{background:var(--surface-2)}
table.grid tr.clickable{cursor:pointer}
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tbl.bx{background:var(--surface);border:1px solid var(--line);border-radius:11px}

/* ---------------- badges ---------------- */
.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:20px;font-size:11.5px;font-weight:600;line-height:1}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.PROFORMA{background:var(--warn-bg);color:#9a6200}
.badge.FACTURE,.badge.ISSUED,.badge.paid{background:var(--ok-bg);color:#0f7a3d}
.badge.DRAFT{background:var(--line-2);color:#42566b}
.badge.CANCELLED,.badge.unpaid{background:var(--danger-bg);color:#b8151f}

/* ---------------- forms ---------------- */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:12.5px;font-weight:600;color:var(--text-2)}
.field input,.field select,.field textarea,input[type=text],input[type=email],input[type=date],input[type=number],input[type=password],select{
  padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:13.5px;font-family:inherit;background:var(--surface);color:var(--text);transition:.14s
}
.field input:focus,.field select:focus,input:focus,select:focus{outline:none;border-color:#9cc0e6;box-shadow:0 0 0 3px rgba(37,99,168,.14)}
.sec-title{display:flex;align-items:center;gap:10px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin:24px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.messages{list-style:none;padding:0;margin:0 0 18px}
.messages li{padding:12px 16px;border-radius:10px;margin-bottom:9px;font-weight:500;font-size:13.5px;box-shadow:var(--sh-sm)}
.messages li.success{background:var(--ok-bg);color:#0f7a3d}
.messages li.error{background:var(--danger-bg);color:#b8151f}
.messages li.warning{background:var(--warn-bg);color:#9a6200}
.messages li.info{background:var(--info-bg);color:#1f5490}

/* ---------------- split (form + preview) ---------------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) 356px;gap:22px;align-items:start}
.split>div{min-width:0}
.sticky{position:sticky;top:92px}
.totbox{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--sh-sm)}
.totbox h3{margin:0 0 14px;font-size:14px;font-weight:700}
.totbox .tr{display:flex;justify-content:space-between;padding:7px 0;font-size:13.5px;color:var(--text-2)}
.totbox .ttc{display:flex;justify-content:space-between;margin-top:10px;background:linear-gradient(180deg,#1d4571,var(--ink));color:#fff;padding:14px 16px;border-radius:11px;font-weight:800;font-size:18px;box-shadow:0 8px 20px rgba(19,47,76,.2)}
.totbox .words{font-style:italic;font-size:12px;color:var(--text-2);border-left:3px solid var(--accent);padding:9px 12px;background:var(--surface-2);border-radius:0 8px 8px 0;margin-top:14px}

@media(max-width:900px){
  .main{margin-left:0}
  .side{transform:translateX(-100%);width:272px;z-index:60}
  body.nav-open{overflow:hidden}
  body.nav-open .side{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.5)}
  body.nav-open .nav-backdrop{opacity:1;pointer-events:auto}
  .hamburger{display:inline-flex}
  .top{padding:12px 14px;gap:10px}
  .top-left{flex:1}
  .top h1{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .top .actions .btn{padding:9px 12px;font-size:12.5px}
  .content{padding:16px 14px}
  .cards{grid-template-columns:1fr;gap:14px}
  .form-grid{grid-template-columns:minmax(0,1fr)}
  .split{grid-template-columns:minmax(0,1fr)}
  .sticky{position:static}
}
@media(max-width:420px){
  .top .actions .btn .lbl{display:none}
  .top .actions .btn{padding:9px 11px}
}