:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #15181d;
  --muted: #5b6472;
  --border: #d9dee6;
  --accent: #0b5fff;
  --accent-ink: #ffffff;
  --accent-soft: #e8efff;
  --danger: #b42318;
  --ok: #0f7b3e;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 8px 24px rgba(16, 24, 40, 0.06);
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1216;
    --surface: #171b21;
    --text: #e7eaee;
    --muted: #9aa4b2;
    --border: #2a313b;
    --accent: #6ea0ff;
    --accent-ink: #0b1020;
    --accent-soft: #1b2638;
    --danger: #ff7a6e;
    --ok: #5ccb86;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}
:root[data-theme="dark"] {
  --bg: #0f1216; --surface: #171b21; --text: #e7eaee; --muted: #9aa4b2; --border: #2a313b;
  --accent: #6ea0ff; --accent-ink: #0b1020; --accent-soft: #1b2638; --danger: #ff7a6e; --ok: #5ccb86;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5rem; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 0.75rem; }
small, .muted { color: var(--muted); }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

.site-header { border-bottom: 1px solid var(--border); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
.brand { font-weight: 700; text-decoration: none; color: var(--text); font-size: 1.05rem; display: inline-flex; align-items: center; gap: 10px; }
.brand .esc-key { width: 34px; height: 26px; flex: none; }
.brand .esc-key rect { fill: var(--accent); }
.brand .esc-key text { fill: var(--accent-ink); font: 700 11px/1 var(--mono); letter-spacing: 0.04em; dominant-baseline: central; }
.brand span { color: var(--text); }
.nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; white-space: nowrap; }
.nav a[aria-current="page"], .nav a:hover { color: var(--text); }

.intro { padding: 28px 0 8px; }
.intro p { max-width: 70ch; }

.ad-slot { display: none; min-height: 90px; margin: 16px 0; border: 1px dashed var(--border); border-radius: var(--radius); align-items: center; justify-content: center; color: var(--muted); font-size: 0.85rem; }
.ad-slot.enabled { display: flex; }

.layout { display: grid; grid-template-columns: 1fr; gap: 24px; padding: 16px 0 40px; }
@media (min-width: 1000px) { .layout { grid-template-columns: minmax(380px, 520px) 1fr; align-items: start; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card + .card { margin-top: 16px; }
.card > .card-body { padding: 16px; }
details.card > summary { cursor: pointer; padding: 14px 16px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
details.card > summary::-webkit-details-marker { display: none; }
details.card > summary::after { content: "+"; color: var(--muted); font-weight: 400; }
details.card[open] > summary::after { content: "–"; }
details.card > .card-body { padding: 0 16px 16px; }

.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.field label, .field .label { font-size: 0.875rem; color: var(--muted); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .row { grid-template-columns: 1fr; } }
input[type="text"], input[type="email"], input[type="tel"], input[type="number"], input[type="date"], select, textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; min-height: 44px;
}
textarea { min-height: 84px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.check { display: flex; align-items: center; gap: 10px; margin: 8px 0; font-size: 0.95rem; }
.check input { width: 20px; height: 20px; accent-color: var(--accent); }
.hint { font-size: 0.85rem; color: var(--muted); margin: -4px 0 12px; }
.hidden { display: none !important; }

.items { width: 100%; border-collapse: collapse; }
.items th { text-align: left; font-size: 0.8rem; color: var(--muted); font-weight: 600; padding: 4px 6px; }
.items td { padding: 4px 6px; vertical-align: top; }
.items input, .items select { min-height: 40px; padding: 8px 10px; }
.items .num { text-align: right; }
.items .remove { background: none; border: 0; color: var(--danger); font-size: 1.2rem; cursor: pointer; padding: 8px; min-width: 44px; min-height: 44px; }
.item-row { display: grid; grid-template-columns: 1fr; gap: 6px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.item-row .grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
@media (min-width: 600px) { .item-row .grid { grid-template-columns: 90px 1fr 1fr 1fr 1fr; } }
.item-row .grid .field { margin: 0; }
.item-row .top { display: flex; gap: 6px; align-items: flex-start; }
.item-row .top .field { flex: 1; margin: 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 600;
  padding: 10px 16px; min-height: 44px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; text-decoration: none; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 12px; min-height: 36px; font-size: 0.9rem; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.actions .btn { flex: 1 1 140px; }
.file-input { display: none; }

.notice { font-size: 0.85rem; color: var(--muted); padding: 10px 12px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 6px; margin: 12px 0; }
.notice.warn { border-left-color: var(--danger); background: transparent; border: 1px solid var(--border); }

/* Invoice preview, also the print layout */
.preview-wrap { position: sticky; top: 16px; }
.invoice { background: #ffffff; color: #111111; padding: 28px; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); font-size: 14px; line-height: 1.45; min-height: 600px; }
.invoice .inv-title { font-size: 26px; font-weight: 700; letter-spacing: 0.02em; margin: 0; line-height: 1.2; }
.invoice .head { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.invoice .meta { text-align: right; }
.invoice .meta div { white-space: nowrap; }
.invoice .parties { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
@media (max-width: 480px) { .invoice .parties { grid-template-columns: 1fr; } }
.invoice .label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: #666; margin-bottom: 4px; }
.invoice .pre { white-space: pre-line; }
.invoice table { width: 100%; border-collapse: collapse; margin: 8px 0 12px; }
.invoice th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: #555; border-bottom: 2px solid #222; padding: 6px 4px; }
.invoice td { padding: 7px 4px; border-bottom: 1px solid #e3e3e3; vertical-align: top; }
.invoice .r { text-align: right; white-space: nowrap; }
.invoice .totals { margin-left: auto; width: 100%; max-width: 320px; }
.invoice .totals td { border: 0; padding: 4px; }
.invoice .totals tr.grand td { border-top: 2px solid #222; font-weight: 700; font-size: 16px; padding-top: 8px; }
.invoice .totals tr.due td { font-weight: 700; }
.invoice .foot { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
@media (max-width: 480px) { .invoice .foot { grid-template-columns: 1fr; } }
.invoice .legal { font-size: 11.5px; color: #444; margin-top: 16px; }
.invoice .badge { display: inline-block; font-size: 11px; border: 1px solid #222; padding: 2px 6px; border-radius: 4px; margin-left: 6px; vertical-align: middle; }
.invoice .empty { color: #888; font-style: italic; }

.affiliate { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: var(--surface); margin-top: 16px; }
.affiliate h3 { margin-bottom: 6px; }
.affiliate .disclosure { font-size: 0.78rem; color: var(--muted); margin: 8px 0 0; }

.faq { padding: 8px 0 40px; max-width: 76ch; }
.faq h2 { margin-top: 24px; }
.faq h3 { margin-top: 18px; font-size: 1.02rem; }

.site-footer { border-top: 1px solid var(--border); padding: 20px 0 40px; color: var(--muted); font-size: 0.9rem; }
.site-footer a { color: var(--muted); margin-right: 14px; }

/* Result card for the late-payment page */
.result { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.stat { border: 1px solid var(--border); border-radius: 8px; padding: 12px; background: var(--bg); }
.stat .k { font-size: 0.8rem; color: var(--muted); }
.stat .v { font-size: 1.3rem; font-weight: 700; margin-top: 2px; }
.stat.big .v { color: var(--accent); }
.copybox { font-family: var(--font); white-space: pre-wrap; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-size: 0.95rem; }

@media print {
  @page { size: A4; margin: 14mm; }
  body { background: #fff; color: #000; }
  .no-print, .site-header, .site-footer, .intro, .ad-slot, .affiliate, .faq, .form-col { display: none !important; }
  .layout { display: block; padding: 0; }
  .preview-wrap { position: static; }
  .invoice { border: 0; box-shadow: none; padding: 0; border-radius: 0; min-height: 0; font-size: 12.5px; }
  .invoice a { color: #000; text-decoration: none; }
}

/* Home page tool list */
.hero { padding: 36px 0 12px; }
.hero h1 { font-size: 2rem; }
.hero p { max-width: 64ch; font-size: 1.05rem; color: var(--muted); }
.tool-grid { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 12px 0 36px; }
@media (min-width: 720px) { .tool-grid { grid-template-columns: 1fr 1fr; } }
.tool-card { display: block; text-decoration: none; color: inherit; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.tool-card:hover { border-color: var(--accent); }
.tool-card h2 { font-size: 1.15rem; margin-bottom: 6px; color: var(--accent); }
.tool-card p { margin: 0; color: var(--muted); }
.tool-card.soon { border-style: dashed; box-shadow: none; }
.tool-card.soon h2 { color: var(--muted); }
.promise { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 0 0 36px; }
@media (min-width: 720px) { .promise { grid-template-columns: repeat(3, 1fr); } }
.promise div { border-left: 3px solid var(--accent); padding: 4px 0 4px 14px; color: var(--muted); font-size: 0.95rem; }
.promise strong { color: var(--text); display: block; margin-bottom: 2px; }
.faq .q { margin-top: 18px; font-size: 1.02rem; }
.page-404 { text-align: center; padding: 80px 0; }
.page-404 h1 { font-size: 3rem; }
.site-footer .studio { margin-top: 8px; }
.site-footer .studio a { margin-right: 0; }

/* IBAN checker */
input.mono, .mono { font-family: var(--mono); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.actions .btn { flex: 1 1 auto; }
.verdict-card { margin-top: 16px; border-left: 4px solid var(--border); }
.verdict-card.ok { border-left-color: var(--ok); }
.verdict-card.ok h2 { color: var(--ok); }
.verdict-card.warn { border-left-color: #c77d00; }
.verdict-card.warn h2 { color: #c77d00; }
.verdict-card.bad { border-left-color: var(--danger); }
.verdict-card.bad h2 { color: var(--danger); }
.verdict-card .pretty { font-size: 1.15rem; letter-spacing: 0.04em; margin: 4px 0 12px; overflow-wrap: anywhere; }
.verdict-card .pretty:empty { display: none; }
.details { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; font-size: 0.95rem; }
.details:empty { display: none; }
.details dt { color: var(--muted); }
.details dd { margin: 0; word-break: break-all; }
.notice.warn { margin-top: 16px; color: var(--text); font-size: 0.92rem; }
.notice.warn strong { display: block; margin-bottom: 4px; }
.faq.page { padding-top: 28px; }