:root {
  --ink: #1b2233;
  --muted: #667085;
  --line: #dfe3ea;
  --bg: #f3f5f8;
  --card: #fff;
  --brand: #1f2a44;
  --accent: #2456d6;
  --danger: #c0352b;
  --ok: #1d7a46;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 14px/1.45 "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink); background: var(--bg);
}
a { color: var(--accent); }

.top {
  background: var(--brand); color: #fff;
  display: flex; align-items: center; gap: 14px; padding: 12px 22px; flex-wrap: wrap;
}
.top h1 { font-size: 17px; margin: 0; letter-spacing: .2px; }
.top .sub { color: #c6cde0; font-size: 12px; }
.top .grow { flex: 1; }

.main { max-width: 1280px; margin: 0 auto; padding: 20px 16px 48px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 16px; margin-bottom: 16px;
}

.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  font: 600 13px/1 inherit; font-family: inherit;
  padding: 9px 14px; border-radius: 7px; cursor: pointer; text-decoration: none;
  border: 1px solid var(--line); background: #fff; color: var(--ink); white-space: nowrap;
}
.btn:hover { border-color: #b9c1cf; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.light { background: #ffffff1a; border-color: #ffffff40; color: #fff; }
.btn.sm { padding: 6px 9px; font-size: 12px; border-radius: 6px; }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: .55; cursor: default; }

.filters { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 5px; }
.field label { font-size: 12px; font-weight: 600; color: var(--muted); }
input, textarea {
  font: inherit; color: var(--ink); background: #fff;
  border: 1px solid #cfd5df; border-radius: 7px; padding: 8px 10px; outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px #2456d61f; }
input[readonly], textarea[readonly] { background: #f6f7f9; }
textarea { resize: vertical; min-height: 64px; }
.hint { font-size: 12px; color: var(--muted); }
.hint a { cursor: pointer; }
.err { color: var(--danger); font-size: 13px; min-height: 18px; }

.table-wrap { overflow-x: auto; }
table.list { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.list th, table.list td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
table.list th { font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); background: #fafbfc; white-space: nowrap; }
table.list th.sort { cursor: pointer; user-select: none; }
table.list td.num, table.list th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.list td.desc { max-width: 420px; }
table.list tr:hover td { background: #f8faff; }
table.list tfoot td { font-weight: 700; background: #fafbfc; }
.actions { display: flex; gap: 5px; flex-wrap: wrap; }
.empty { text-align: center; color: var(--muted); padding: 34px 0; }
.count { color: var(--muted); font-size: 13px; }

/* editor */
.editor { display: grid; grid-template-columns: 360px 1fr; gap: 16px; align-items: start; }
.editor .form { position: sticky; top: 12px; }
.form .field { margin-bottom: 13px; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.date-wrap { display: flex; gap: 6px; }
.date-wrap input[type=text] { flex: 1; min-width: 0; }
.date-wrap input[type=date] { width: 42px; padding: 7px 6px; color: transparent; cursor: pointer; }
.date-wrap input[type=date]::-webkit-datetime-edit { display: none; }
.preview { overflow: auto; background: #e6e9ee; border-radius: 10px; padding: 16px; }
.preview .scale { transform-origin: top left; }
.preview .inv-page { box-shadow: 0 2px 14px #0002; }
.form-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.toast {
  position: fixed; right: 16px; bottom: 16px; padding: 10px 14px; border-radius: 8px;
  background: var(--ink); color: #fff; font-size: 13px; opacity: 0; transform: translateY(8px);
  transition: .2s; pointer-events: none; z-index: 10;
}
.toast.show { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .editor { grid-template-columns: 1fr; }
  .editor .form { position: static; }
}

.form .row2 > .field { min-width: 0; }
.form input[type=text], .form textarea { width: 100%; }
.date-wrap input[type=date] { flex: 0 0 42px; }

/* line items */
.items-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
  font-size: 12px; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.item { border: 1px solid var(--line); border-radius: 8px; padding: 9px; margin-bottom: 8px; background: #fbfcfd;
  display: flex; flex-direction: column; gap: 6px; }
.item-top { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--muted); }
.item-del { padding: 2px 8px; font-size: 15px; line-height: 1; }
.item textarea { min-height: 44px; }
.items-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 13px; }