:root {
  --bg: #F7F9FC;
  --ink: #18222F;
  --muted: #5A6778;
  --line: #DCE3EC;
  --blue: #1F4E8C;
  --blue-dark: #163A69;
  --card: #FFFFFF;
  --ok-bg: #E9F6EE; --ok-line: #7CC49A; --ok-ink: #1B5E36;
  --warn-bg: #FFF5E0; --warn-line: #E8C25A; --warn-ink: #6B4E0A;
  --error-bg: #FFF0F0; --error-line: #D78989; --error-ink: #8A1E1E;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px; line-height: 1.6;
}
main { max-width: 780px; margin: 0 auto; padding: 1.5rem 1.1rem 4rem; }
header.site { padding: 1.2rem 0 0.4rem; }
.brand { font-weight: 800; font-size: 1.05rem; color: var(--blue-dark); text-decoration: none; }
.site-nav { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin: 0.75rem 0 0; font-size: 0.9rem; }
.site-nav a { color: var(--blue); }
h1 { font-size: clamp(1.5rem, 4.5vw, 2.1rem); line-height: 1.2; margin: 0.8rem 0 0.6rem; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 0.7rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.45rem; }
p { margin: 0 0 1rem; }
a { color: var(--blue); }
.updated { color: var(--muted); font-size: 0.85rem; }
.status { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 10px; padding: 1rem 1.2rem; margin: 1.2rem 0; }
.status strong { color: var(--warn-ink); }
.status ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.status li { margin-bottom: 0.35rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1.3rem 1.3rem 1.5rem; margin: 1.5rem 0; box-shadow: 0 1px 4px rgba(24,34,47,0.06); }
.card h2 { margin-top: 0; }
fieldset { border: 0; margin: 0 0 1.1rem; padding: 0; }
legend { font-weight: 600; font-size: 0.95rem; margin-bottom: 0.4rem; }
.opt { display: flex; gap: 0.5rem; align-items: flex-start; margin: 0.25rem 0; font-size: 0.95rem; }
.opt input { margin-top: 0.35rem; }
.result { border-radius: 10px; padding: 1rem 1.2rem; margin-top: 1rem; }
.result.ok { background: var(--ok-bg); border: 1px solid var(--ok-line); }
.result.ok strong { color: var(--ok-ink); }
.result.warn { background: var(--warn-bg); border: 1px solid var(--warn-line); }
.result.error { background: var(--error-bg); border: 1px solid var(--error-line); color: var(--error-ink); }
.result ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.hidden { display: none; }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.55rem 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.82rem; color: var(--muted); font-weight: 600; }
td a { color: var(--blue); }
.note { font-size: 0.82rem; color: var(--muted); margin-top: 0.8rem; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 0.8rem 1.1rem; margin-bottom: 0.6rem; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 0.7rem 0 0.2rem; }
ol.check li { margin-bottom: 0.4rem; }
footer { margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--line); font-size: 0.82rem; color: var(--muted); }
footer p { margin-bottom: 0.6rem; }
button, .button {
  display: inline-block; border: 0; border-radius: 7px; background: var(--blue); color: #fff;
  cursor: pointer; font: inherit; font-size: 0.95rem; font-weight: 650; padding: 0.6rem 0.85rem;
  text-decoration: none;
}
button:hover, .button:hover { background: var(--blue-dark); }
button.secondary { background: #E7EDF5; color: var(--blue-dark); }
button.secondary:hover { background: #D8E2EF; }
.button-row { display: flex; flex-wrap: wrap; gap: 0.65rem; margin: 1rem 0; }
.drop-zone { border: 2px dashed #9AABC0; border-radius: 10px; padding: 1.25rem; text-align: center; background: #FAFCFF; }
.drop-zone.dragging { border-color: var(--blue); background: #EEF5FF; }
.drop-zone p { margin-bottom: 0.65rem; }
.upload-input { display: block; margin: 0.75rem auto 0; max-width: 100%; }
textarea { display: block; width: 100%; min-height: 9rem; padding: 0.7rem; border: 1px solid var(--line); border-radius: 7px; color: var(--ink); font: 0.85rem/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.privacy-note { font-size: 0.9rem; color: var(--ok-ink); }
.invoice-heading { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 1rem; align-items: baseline; }
.invoice-heading h2 { margin: 0; }
.invoice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.8rem 1.2rem; }
.invoice-block { margin: 1.1rem 0; }
.invoice-block h3 { border-bottom: 1px solid var(--line); padding-bottom: 0.25rem; }
.facts { margin: 0; }
.facts div { display: grid; grid-template-columns: minmax(8rem, 40%) 1fr; gap: 0.6rem; padding: 0.25rem 0; border-bottom: 1px solid #EDF1F6; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-weight: 550; overflow-wrap: anywhere; }
.totals { max-width: 29rem; margin-left: auto; }
.totals .facts dd { text-align: right; }
.check-list { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.check-list.good { color: var(--ok-ink); }
.viewer-actions { margin-top: 1rem; }
.narrow-list li { margin-bottom: 0.35rem; }
@media (max-width: 600px) {
  .comparison-table thead { display: none; }
  .comparison-table, .comparison-table tbody, .comparison-table tr, .comparison-table td { display: block; width: 100%; }
  .comparison-table tr { border: 1px solid var(--line); border-radius: 10px; background: var(--card); padding: 0.5rem 0.8rem; margin-bottom: 0.7rem; }
  .comparison-table td { border: 0; padding: 0.2rem 0; }
  .comparison-table td:first-child { font-weight: 700; font-size: 1rem; }
  .comparison-table td:nth-child(2)::before { content: "V zozname certifikovaných: "; color: var(--muted); }
  .comparison-table td:nth-child(3)::before { content: "Prijímanie: "; color: var(--muted); }
  .comparison-table td:nth-child(4)::before { content: "Odosielanie: "; color: var(--muted); }
  .invoice-grid { grid-template-columns: 1fr; }
  .facts div { grid-template-columns: 1fr; gap: 0.05rem; padding: 0.4rem 0; }
  .totals .facts dd { text-align: left; }
}
@media print {
  body { background: #fff; font-size: 11pt; }
  main { max-width: none; padding: 0; }
  .site-nav, .viewer-input, .viewer-actions, footer, .no-print { display: none !important; }
  .card, details { box-shadow: none; break-inside: avoid; }
  .result { border-color: #777 !important; background: #fff !important; color: #000 !important; }
  a { color: #000; text-decoration: none; }
}