:root {
  --bg: #f2f4f7;
  --card: #ffffff;
  --line: #e3e7ec;
  --text: #1a2233;
  --muted: #66707f;
  --primary: #1d4ed8;
  --primary-h: #1e40af;
  --green: #15803d;
  --green-bg: #dcfce7;
  --amber: #b45309;
  --amber-bg: #fef3c7;
  --red: #b91c1c;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  margin: 0;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.topbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 12px; }
.brand {
  font-weight: 800; font-size: 21px; letter-spacing: .3px;
  color: var(--primary); text-decoration: none;
}
.topbar nav { display: flex; flex-wrap: wrap; }
.topbar nav a {
  margin-left: 6px; padding: 9px 14px; border-radius: 9px;
  text-decoration: none; color: var(--text); font-weight: 600;
}
.topbar nav a:hover { background: #eef1f6; }
.topbar nav a.active { background: #e8edfb; color: var(--primary); }

.view { display: none; padding: 26px 0 70px; }
.view.active { display: block; }

h1 { font-size: 26px; margin: 0 0 18px; }
h2 { font-size: 19px; margin: 28px 0 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(15, 23, 42, .05);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px;
  border: 1px solid #c9d2dd; background: #fff;
  font-size: 16px; font-weight: 600; cursor: pointer;
  color: var(--text); text-decoration: none;
}
.btn:hover { border-color: #9fb0c3; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-h); border-color: var(--primary-h); }
.btn-secondary { background: #e8edfb; border-color: #c6d3f5; color: var(--primary); }
.btn-big { padding: 13px 24px; font-size: 17px; }
.btn[disabled] { opacity: .6; cursor: wait; }

.page-head {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; margin-bottom: 8px;
}
.head-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px; margin-top: 14px;
}
.stat { padding: 22px 24px; display: flex; flex-direction: column; gap: 4px; }
.stat-num { font-size: 46px; font-weight: 800; line-height: 1.1; }
.stat-label { color: var(--muted); font-weight: 600; }
.stat.amber .stat-num { color: var(--amber); }
.stat.green .stat-num { color: var(--green); }

.mini-stats { color: var(--muted); margin-top: 16px; font-size: 15px; }

.recent-list .doc-row {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 13px 16px; margin-top: 10px;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  cursor: pointer;
}
.doc-row:hover { border-color: var(--primary); }
.doc-num { font-weight: 700; }
.doc-cust { flex: 1; min-width: 160px; }
.doc-sum { font-weight: 600; white-space: nowrap; }

.badge { padding: 3px 11px; border-radius: 999px; font-size: 13px; font-weight: 700; white-space: nowrap; }
.badge.faktura { background: #dbeafe; color: #1d4ed8; }
.badge.nabidka { background: #fef3c7; color: #b45309; }

.pill { padding: 3px 11px; border-radius: 999px; font-size: 13px; font-weight: 700; white-space: nowrap; }
.pill.ok { background: var(--green-bg); color: var(--green); }
.pill.wait { background: #e5e7eb; color: #4b5563; }

.pill-btn {
  border: none; border-radius: 999px; padding: 6px 13px;
  font-weight: 700; font-size: 13.5px; cursor: pointer; white-space: nowrap;
}
.pill-btn.ok { background: var(--green-bg); color: var(--green); }
.pill-btn.wait { background: #e5e7eb; color: #4b5563; }
.pill-btn:hover { filter: brightness(.96); }

.form-wrap { max-width: 880px; padding: 30px; margin: 0 auto; }

fieldset {
  border: 1px solid var(--line); border-radius: 12px;
  margin: 0 0 20px; padding: 16px 18px 18px;
}
legend { font-weight: 700; padding: 0 8px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-bottom: 20px; }

label {
  display: flex; flex-direction: column; gap: 6px;
  font-weight: 600; font-size: 14.5px; color: #39424f;
}
.wide { grid-column: 1 / -1; }

input, textarea, select {
  font: inherit; font-size: 16px;
  padding: 10px 12px; width: 100%;
  border: 1px solid #cbd3dc; border-radius: 9px;
  background: #fff; color: var(--text);
}
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid #93b4fc; border-color: var(--primary); }

.hint { color: var(--muted); font-size: 14.5px; margin-top: -10px; }
.hint-inline { font-weight: 400; color: var(--muted); }

.segmented { display: flex; gap: 10px; flex-wrap: wrap; }
.seg { position: relative; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span {
  display: inline-block; padding: 12px 26px;
  border: 1.5px solid var(--line); border-radius: 10px;
  font-weight: 700; font-size: 16px; cursor: pointer; background: #fff;
}
.seg span:hover { border-color: #9fb0c3; }
.seg input:checked + span { background: var(--primary); border-color: var(--primary); color: #fff; }

.items-table-wrap { overflow-x: auto; }
.items-table { width: 100%; border-collapse: collapse; min-width: 660px; }
.items-table th {
  text-align: left; font-size: 13.5px; color: var(--muted);
  padding: 6px 8px; border-bottom: 2px solid var(--line); white-space: nowrap;
}
.items-table td { padding: 4px 6px; border-bottom: 1px solid var(--line); }
.col-num, .items-table td.it-total { text-align: right; }
.items-table input[type=number] { text-align: right; }
.items-table td.it-total { font-weight: 700; white-space: nowrap; font-variant-numeric: tabular-nums; }
.row-del {
  border: none; background: none; color: var(--red);
  font-size: 24px; line-height: 1; cursor: pointer; padding: 4px 10px;
}
.row-del:hover { color: #7f1d1d; }

.add-btn {
  margin-top: 12px; width: 100%; padding: 13px;
  border: 2px dashed #b9c4d0; border-radius: 10px; background: #fafbfd;
  color: var(--primary); font-weight: 700; font-size: 16px; cursor: pointer;
}
.add-btn:hover { border-color: var(--primary); background: #f2f6ff; }

.totals-box { margin-top: 18px; margin-left: auto; max-width: 330px; display: flex; flex-direction: column; gap: 6px; }
.totals-row { display: flex; justify-content: space-between; gap: 20px; padding: 6px 10px; }
.totals-row.total { background: #eef2ff; border-radius: 9px; font-size: 18px; padding: 10px 12px; }

.form-actions { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.center { justify-content: center; }

.error-box {
  margin-top: 16px; background: #fee2e2; color: #991b1b;
  padding: 12px 16px; border-radius: 10px; font-weight: 600;
}

#success-panel { text-align: center; padding: 26px 8px 10px; }
.success-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--green-bg); color: var(--green);
  font-size: 34px; font-weight: 800;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.success-text { font-size: 17px; }

.filters { display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.filters select { max-width: 220px; }
.filters input { max-width: 380px; }

.table-wrap { overflow-x: auto; }
.doc-table { width: 100%; border-collapse: collapse; min-width: 940px; }
.doc-table th {
  text-align: left; font-size: 13.5px; color: var(--muted);
  padding: 13px 10px; border-bottom: 2px solid var(--line); white-space: nowrap;
}
.doc-table td { padding: 11px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.doc-table .num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.mono { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.actions { white-space: nowrap; text-align: right; }
.act {
  margin-left: 10px; color: var(--primary); font-weight: 600;
  text-decoration: none; background: none; border: none;
  font: inherit; font-size: 14.5px; cursor: pointer; padding: 0;
}
.act:hover { text-decoration: underline; }
.act.danger { color: var(--red); }

.empty { padding: 38px 20px; text-align: center; color: var(--muted); }

#toast {
  position: fixed; left: 50%; bottom: 26px;
  transform: translateX(-50%) translateY(20px);
  background: #111827; color: #fff;
  padding: 12px 22px; border-radius: 10px;
  font-weight: 600; opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .25s; z-index: 50;
  max-width: 90vw;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.err { background: var(--red); }

@media (max-width: 720px) {
  .grid2, .grid3 { grid-template-columns: 1fr; }
  .topbar-inner { flex-direction: column; height: auto; padding: 10px 0; }
  .stat-num { font-size: 36px; }
}