:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1d2433;
  --muted: #667085;
  --line: #e3e6ec;
  --accent: #e05a2b;
  --accent-dark: #c2471c;
  --navy: #2d3a5a;
  --ok: #157f3b;
  --warn: #b45309;
  --err: #b42318;
  --radius: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 12px; }

.topbar { display: flex; align-items: center; gap: 24px; background: var(--navy); color: #fff; padding: 0 24px; height: 56px; position: sticky; top: 0; z-index: 10; }
.brand { color: #fff; font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.brand-mark { background: var(--accent); border-radius: 6px; padding: 3px 6px; font-size: 12px; }
.nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.nav a { color: #cfd6e6; padding: 8px 12px; border-radius: 6px; white-space: nowrap; }
.nav a:hover, .nav a.active { background: rgba(255,255,255,.12); color: #fff; text-decoration: none; }
.who { font-size: 13px; color: #cfd6e6; white-space: nowrap; }
.who a { color: #fff; margin-left: 8px; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 24px 16px 64px; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 8px 14px; border-radius: 6px; font: inherit; cursor: pointer; text-decoration: none; }
.btn:hover { background: #f0f2f5; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-danger { color: var(--err); border-color: #f1c4bf; }
.btn-danger:hover { background: #fdf0ee; }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.inline { display: inline; }

.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.span2 { grid-column: span 2; }
.span-all { grid-column: 1 / -1; }
@media (max-width: 800px) { .g2, .g3, .g4 { grid-template-columns: 1fr; } .span2 { grid-column: auto; } .topbar { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 8px; } }

label { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .03em; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=color], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid #cfd4dc; border-radius: 6px; font: inherit; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(224,90,43,.25); border-color: var(--accent); }
textarea { min-height: 70px; resize: vertical; }
.hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--ink); }

table.list { width: 100%; border-collapse: collapse; }
table.list th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); padding: 10px 8px; border-bottom: 1px solid var(--line); }
table.list td { padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
table.list tr:hover td { background: #fafbfc; }
.num, table.list th.num { text-align: right; white-space: nowrap; }
.muted { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 32px; }
.table-scroll { overflow-x: auto; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-draft { background: #eef0f3; color: #475467; }
.badge-sent { background: #e8f0fe; color: #1d4ed8; }
.badge-partial { background: #fff4e5; color: var(--warn); }
.badge-paid { background: #e7f6ec; color: var(--ok); }
.badge-cancelled { background: #fdecea; color: var(--err); }
.badge-overdue { background: #fdecea; color: var(--err); }

.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 14px; }
.flash-ok { background: #e7f6ec; color: var(--ok); border: 1px solid #b7e3c5; }
.flash-err { background: #fdecea; color: var(--err); border: 1px solid #f5c2bd; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
@media (max-width: 800px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.stat .k { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.stat .v { font-size: 22px; font-weight: 700; margin-top: 4px; }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filters input, .filters select { width: auto; min-width: 160px; }

.auth { max-width: 400px; margin: 60px auto; }
.auth .card { padding: 28px; }
.auth h1 { margin-bottom: 6px; }
.auth .grid { margin-top: 18px; }

table.items { width: 100%; border-collapse: collapse; }
table.items th { background: var(--accent); color: #fff; font-size: 12px; text-transform: uppercase; padding: 8px 6px; text-align: left; }
table.items td { padding: 6px 4px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.items input, table.items select { padding: 6px 8px; }
table.items .c-desc { min-width: 200px; }
table.items .c-hsn { width: 90px; }
table.items .c-per { width: 80px; }
table.items .c-obj { width: 90px; }
table.items .c-qty { width: 90px; }
table.items .c-unit { width: 70px; }
table.items .c-rate { width: 120px; }
table.items .c-tax { width: 130px; }
table.items .c-amt { width: 120px; text-align: right; padding-top: 12px; font-weight: 600; }
table.items .c-del { width: 36px; }
.icon-btn { border: none; background: none; color: var(--err); font-size: 18px; cursor: pointer; padding: 4px 8px; border-radius: 4px; }
.icon-btn:hover { background: #fdecea; }

.totals { max-width: 420px; margin-left: auto; }
.totals .row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--line); gap: 12px; }
.totals .row.grand { font-size: 18px; font-weight: 700; border-bottom: none; background: #fbe9e3; padding: 10px; border-radius: 6px; margin-top: 6px; }
.totals .row.hide { display: none; }
.inline-fields { display: flex; gap: 6px; align-items: center; }
.inline-fields select { width: 70px; }
.inline-fields input { width: 110px; }
.words { font-style: italic; color: var(--muted); margin-top: 8px; text-align: right; }

.logo-preview { max-height: 80px; max-width: 240px; border: 1px dashed var(--line); padding: 6px; border-radius: 6px; background: #fff; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
.kv { display: grid; grid-template-columns: 140px 1fr; gap: 4px 12px; }
.kv .k { color: var(--muted); }

.auth-brand { display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--navy); margin-bottom: 14px; }
.auth-brand .brand-mark { color: #fff; }
.auth-links { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 16px; font-size: 13px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.codebox { background: #0f172a; color: #e2e8f0; padding: 12px; border-radius: 6px; overflow-x: auto; font-size: 12px; white-space: pre-wrap; }
.tabs { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.tabs a { padding: 7px 14px; border-radius: 6px; border: 1px solid var(--line); background: #fff; color: var(--ink); }
.tabs a.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.tabs a:hover { text-decoration: none; }
.who a { color: #fff; }
code { background: #f0f2f5; padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }
details.row-actions { position: relative; display: inline-block; text-align: left; }
details.row-actions summary { list-style: none; }
details.row-actions summary::-webkit-details-marker { display: none; }
details.row-actions .menu { position: static; margin-top: 6px; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(16,24,40,.12); padding: 10px; display: grid; gap: 8px; min-width: 250px; }
details.row-actions .menu form { display: grid; gap: 6px; }
details.row-actions .menu form.inline-fields { display: flex; }
@media (max-width: 1000px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 8px 16px; }
  .topbar .nav { order: 3; flex-basis: 100%; flex-wrap: wrap; overflow: visible; }
  .topbar .who { margin-left: auto; }
}