/* Modern, responsive style inspired by the reference layout */
:root{
  --bg:#f2f2f2;
  --card:#ffffff;
  --text:#222;
  --muted:#6b7280;
  --brand:#3d3a2e; /* deep olive */
  --accent:#f6b31b; /* yellow ribbon */
  --line:#e5e7eb;
  --primary:#1f2937;
  --shadow:0 8px 24px rgba(0,0,0,.08);
  --radius:16px;
  --radius-sm:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body.page{background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.5}

.container{max-width:980px;margin:24px auto;padding:0 16px}
.site-header,.site-footer{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#fff;border-bottom:1px solid var(--line)}
.site-footer{border-top:1px solid var(--line);border-bottom:none;margin-top:32px}
.brand{font-weight:800;letter-spacing:.3px}

.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.card-title{margin:0 0 12px 0;font-size:22px}

.btn{display:inline-block;padding:10px 14px;border-radius:999px;background:#111;color:#fff;text-decoration:none;border:none;cursor:pointer;transition:.2s}
.btn:hover{opacity:.9}
.btn.primary{background:var(--primary)}
.btn.outline{background:#fff;color:#111;border:1px solid #111}
.btn.small{padding:6px 10px;font-size:13px}
.btn.danger{background:#b91c1c}

.grid{display:grid;gap:12px}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:720px){.grid.two,.grid.three{grid-template-columns:1fr}}

label{display:block;font-size:14px;color:var(--muted)}
input,textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;font-size:14px;color:var(--text);background:#fff}
.fieldset{border:1px dashed var(--line);padding:12px;border-radius:var(--radius-sm);margin:12px 0}
.fieldset legend{padding:0 6px;color:var(--muted)}

.table-wrap{overflow:auto}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
.table th{font-weight:700;color:#333;background:#fafafa}

.actions{display:flex;gap:12px;justify-content:flex-end;margin-top:12px}

.invoice-wrap{background:#fff;border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.inv-header{position:relative;display:flex;align-items:center;justify-content:space-between;background:var(--brand);color:#fff;padding:22px 24px}
.logo-title{font-size:26px;font-weight:800;letter-spacing:1px}
.logo-sub{opacity:.9;font-size:13px}
.ribbon{position:relative;background:var(--accent);color:#fff;padding:16px 20px;border-radius:6px;font-weight:700;box-shadow:0 4px 0 rgba(0,0,0,.1)}

.inv-meta{display:flex;justify-content:space-between;gap:24px;padding:18px 24px;border-bottom:1px solid var(--line)}
.meta-left .label{color:var(--muted);font-size:12px;margin-bottom:2px}
.meta-left .bold{font-weight:700}
.meta-right{margin-left:auto;text-align:right}
.meta-line{font-size:14px;color:#333;margin:4px 0}
.meta-line .mkey{color:#555;margin-right:6px}
.meta-line.total{margin-top:8px;border-top:1px solid var(--line);padding-top:8px}

.notice{padding:12px 24px;font-size:13px;color:#555;border-left:6px solid var(--accent);background:#fffaf0}

.inv-table thead th{background:#fef3c7;color:#000;border-bottom:2px solid #f59e0b}
.table.lined tbody tr:nth-child(odd){background:#fafafa}

.totals{display:flex;gap:24px;padding:12px 24px 24px}
.totals-col{flex:1}
.totals-col.sums{max-width:320px}
.sum-line{display:flex;justify-content:space-between;border-bottom:1px dashed var(--line);padding:8px 0}
.sum-line.total{font-weight:800}
.heading{font-weight:700}
.signature{padding:16px 24px;color:#444;text-align:right;font-style:italic}
.inv-footer-bar{background:#3a3428;color:#fff;text-align:center;padding:10px}

.actions-bar{display:flex;gap:12px;align-items:center;margin:12px 0}
@media print {.invoice-wrap{box-shadow:none}}