:root{
  --bg:#f3f0ea;
  --panel:#fffaf2;
  --ink:#171411;
  --muted:#746b5f;
  --line:#e4dacd;
  --gold:#b79057;
  --dark:#12100d;
  --green:#1d7d4f;
  --danger:#a33;
}
*{box-sizing:border-box}
body{
  margin:0;
  background:linear-gradient(135deg,#f7f2ea,#ebe2d6);
  color:var(--ink);
  font-family:Tahoma,Arial,sans-serif;
}
.shell{display:flex;min-height:100vh}
.sidebar{
  width:292px;
  background:var(--dark);
  color:#fff;
  padding:24px;
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
}
.brand-block{
  display:flex;
  gap:14px;
  align-items:center;
  padding-bottom:24px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.logo-mark{
  width:52px;height:52px;
  border-radius:18px;
  background:linear-gradient(135deg,var(--gold),#e3c992);
  color:#111;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:900;
  font-size:26px;
}
.brand-block h1{font-size:20px;margin:0}
.brand-block span{font-size:12px;color:#c8bcae}
nav{margin-top:22px;display:flex;flex-direction:column;gap:8px}
.nav{
  border:0;
  border-radius:14px;
  padding:13px 14px;
  text-align:right;
  background:transparent;
  color:#e8dfd3;
  cursor:pointer;
  font-weight:700;
}
.nav:hover,.nav.active{
  background:#fffaf2;
  color:#111;
}
.sidebar-footer{
  margin-top:auto;
  border:1px solid rgba(255,255,255,.14);
  border-radius:18px;
  padding:16px;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.sidebar-footer b{font-size:26px;color:#e3c992}
.content{flex:1;padding:28px;min-width:0}
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:24px;
}
.eyebrow{
  color:var(--gold);
  font-weight:800;
  margin:0 0 6px;
}
.topbar h2{font-size:32px;margin:0}
.top-actions{display:flex;gap:10px;align-items:center}
select,input,textarea{
  width:100%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  border-radius:14px;
  padding:12px 13px;
  margin-top:7px;
  font-family:inherit;
  outline:none;
}
textarea{min-height:82px;resize:vertical}
label{font-weight:800;font-size:13px;color:#40382f}
.btn{
  border:0;
  border-radius:14px;
  padding:12px 16px;
  background:var(--dark);
  color:#fff;
  font-family:inherit;
  font-weight:800;
  cursor:pointer;
}
.btn:hover{opacity:.86}
.btn.ghost{background:#fff;color:#111;border:1px solid var(--line)}
.btn.success{background:var(--green)}
.view{display:none}
.view.active{display:block}
.metrics-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin-bottom:18px;
}
.metric-card,.panel{
  background:rgba(255,250,242,.92);
  border:1px solid rgba(228,218,205,.85);
  border-radius:24px;
  box-shadow:0 20px 50px rgba(54,38,22,.08);
}
.metric-card{padding:22px}
.metric-card span{display:block;color:var(--muted);font-weight:800}
.metric-card strong{display:block;font-size:30px;margin:12px 0}
.metric-card small{color:var(--muted)}
.metric-card.dark{background:var(--dark);color:#fff}
.metric-card.dark span,.metric-card.dark small{color:#cfc3b4}
.panel{padding:22px;margin-bottom:18px}
.panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.panel h3{margin:0 0 10px;font-size:23px}
.muted{color:var(--muted);margin-top:0}
.brand-summary{display:grid;gap:10px}
.summary-row{
  display:flex;
  justify-content:space-between;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:16px;
}
.page-grid{
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);
  gap:18px;
}
.form-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
}
.wide{grid-column:1/-1}
.result-list{
  display:grid;
  gap:12px;
}
.result-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:16px;
  display:flex;
  justify-content:space-between;
}
.result-item b{font-size:20px}
.button-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.invoice-layout{
  display:grid;
  grid-template-columns:430px minmax(0,1fr);
  gap:18px;
  align-items:start;
}
.item-entry{
  display:grid;
  grid-template-columns:1fr 100px 130px auto;
  gap:10px;
  margin:12px 0;
}
.mini-item{
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  padding:10px 12px;
  border-radius:14px;
  margin:6px 0;
}
.mini-item button{
  border:0;background:#fee;color:#a33;border-radius:10px;padding:7px 10px;cursor:pointer
}
.invoice-preview-wrap{position:sticky;top:24px}
.invoice-paper{
  background:white;
  width:794px;
  min-height:1123px;
  margin:0 auto;
  padding:42px;
  color:#111;
  box-shadow:0 24px 70px rgba(0,0,0,.14);
}
.invoice-header{
  display:flex;
  justify-content:space-between;
  border-bottom:3px solid #111;
  padding-bottom:18px;
  margin-bottom:24px;
}
.invoice-logo{
  font-size:42px;
  font-weight:900;
  letter-spacing:1px;
}
.invoice-meta{
  text-align:left;
  line-height:1.8;
}
.invoice-title{
  background:#111;
  color:white;
  display:inline-block;
  padding:10px 20px;
  border-radius:999px;
  margin:10px 0 20px;
}
.invoice-info{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-bottom:18px;
}
.info-box{
  border:1px solid #ddd;
  border-radius:16px;
  padding:14px;
  background:#fafafa;
}
.invoice-table{
  width:100%;
  border-collapse:collapse;
  margin-top:18px;
}
.invoice-table th{
  background:#111;color:#fff;padding:12px;border:1px solid #111
}
.invoice-table td{
  padding:12px;
  border:1px solid #ddd;
}
.invoice-total-box{
  width:330px;
  margin:24px 0 0 auto;
  border:1px solid #111;
  border-radius:16px;
  overflow:hidden;
}
.invoice-total-box div{
  display:flex;
  justify-content:space-between;
  padding:12px 14px;
  border-bottom:1px solid #ddd;
}
.invoice-total-box div:last-child{
  border-bottom:0;background:#111;color:white;font-weight:900
}
.tax-card-area,.attachment-area{
  margin-top:28px;
  page-break-inside:avoid;
}
.tax-card-area img,.attachment-area img{
  max-width:100%;
  border:1px solid #ddd;
  border-radius:14px;
  margin-top:10px;
}
.table-wrap{
  overflow:auto;
  margin-top:16px;
}
.data-table{
  width:100%;
  border-collapse:collapse;
  background:white;
  border-radius:18px;
  overflow:hidden;
}
.data-table th{
  background:#111;color:white;padding:12px;white-space:nowrap
}
.data-table td{
  border-bottom:1px solid #eee;
  padding:12px;
  white-space:nowrap
}
.full-input{max-width:760px}
.notes{line-height:2;color:var(--muted)}
@media(max-width:1200px){
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .invoice-layout,.page-grid{grid-template-columns:1fr}
  .invoice-preview-wrap{position:static;overflow:auto}
}
@media(max-width:850px){
  .shell{display:block}
  .sidebar{width:auto;height:auto;position:relative}
  .form-grid,.metrics-grid,.item-entry{grid-template-columns:1fr}
  .topbar{display:block}
  .invoice-paper{width:100%;min-height:auto;padding:24px}
}