:root {
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-2: #eef1ec;
  --text: #17201b;
  --muted: #5b665f;
  --line: #dde3dc;
  --accent: #0f6b4f;
  --accent-strong: #0a5039;
  --accent-soft: #e2f1ea;
  --warn-soft: #fff4dc;
  --warn: #8a5a00;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 30, 25, .06), 0 6px 24px rgba(20, 30, 25, .06);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1412;
    --surface: #161d1a;
    --surface-2: #1d2622;
    --text: #e8efea;
    --muted: #9aa8a0;
    --line: #2a3530;
    --accent: #4cc497;
    --accent-strong: #79d8b3;
    --accent-soft: #173229;
    --warn-soft: #2d2513;
    --warn: #e7b85a;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-strong); }
img { max-width: 100%; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; }
.logo { font-weight: 800; font-size: 1.15rem; color: var(--text); text-decoration: none; letter-spacing: -.01em; white-space: nowrap; }
.logo span { color: var(--accent); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 10px; padding: 6px 12px; color: var(--text); font: inherit; cursor: pointer; }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a { display: block; padding: 8px 12px; border-radius: 10px; color: var(--text); text-decoration: none; font-size: .95rem; }
.main-nav a:hover, .main-nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-strong); }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; left: 0; right: 0; top: 60px; background: var(--surface); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; z-index: 10; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .site-header { position: relative; }
}

/* Hero */
.hero { padding: 32px 0 8px; }
.hero h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.15; margin: 0 0 8px; letter-spacing: -.02em; }
.hero p.lead { color: var(--muted); font-size: 1.08rem; margin: 0; max-width: 680px; }
.crumbs { font-size: .88rem; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--muted); }

/* Calculator */
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; margin: 24px 0 32px; }
@media (max-width: 820px) { .calc { grid-template-columns: minmax(0, 1fr); } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.card h2 { font-size: 1.1rem; margin: 0 0 14px; }

.field { margin-bottom: 14px; }
.field > label, .field > .label { display: block; font-weight: 600; font-size: .93rem; margin-bottom: 6px; }
.field .hint { display: block; color: var(--muted); font-size: .84rem; margin-top: 4px; }
.row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; }
@media (max-width: 420px) { .row { grid-template-columns: minmax(0, 1fr); } }

input[type="number"], input[type="text"], select {
  width: 100%; padding: 11px 12px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
  appearance: none; -moz-appearance: textfield;
}
select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 32px; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
input::-webkit-outer-spin-button, input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.money { position: relative; }
.money::before { content: "€"; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.money input { padding-left: 28px; }

.check { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; cursor: pointer; font-size: .95rem; }
.check input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--accent); flex: none; }

.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: inline-block; padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: .9rem; background: var(--bg); }
.seg input:checked + span { background: var(--accent); border-color: var(--accent); color: #fff; }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-color-scheme: dark) { .seg input:checked + span { color: #0f1412; } }

details.more { margin-top: 6px; border-top: 1px solid var(--line); padding-top: 10px; }
details.more summary { cursor: pointer; font-weight: 600; font-size: .93rem; color: var(--accent); margin-bottom: 10px; }

/* Result */
.result { position: sticky; top: 16px; align-self: start; }
.big { background: var(--accent); color: #fff; border-radius: 12px; padding: 18px; margin-bottom: 14px; }
@media (prefers-color-scheme: dark) { .big { color: #0f1412; } }
.big .lbl { font-size: .9rem; opacity: .9; }
.big .val { font-size: clamp(2rem, 6vw, 2.6rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.big .sub { font-size: .9rem; opacity: .9; margin-top: 4px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.stat { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; }
.stat .lbl { font-size: .8rem; color: var(--muted); }
.stat .val { font-weight: 700; font-size: 1.1rem; font-variant-numeric: tabular-nums; }

table.spec { width: 100%; border-collapse: collapse; font-size: .93rem; font-variant-numeric: tabular-nums; }
table.spec td, table.spec th { padding: 7px 4px; border-bottom: 1px solid var(--line); text-align: left; }
table.spec td:last-child, table.spec th:last-child { text-align: right; white-space: nowrap; }
table.spec tr.total td { font-weight: 700; border-bottom: 0; border-top: 2px solid var(--text); }
table.spec tr.minus td:last-child { color: var(--muted); }
table.spec th { font-size: .82rem; color: var(--muted); font-weight: 600; }
.table-scroll { overflow-x: auto; }
.table-scroll > table { min-width: 520px; }
.result .table-scroll > table { min-width: 0; }

.note { font-size: .84rem; color: var(--muted); margin: 12px 0 0; }
.callout { background: var(--warn-soft); color: var(--text); border-radius: 10px; padding: 12px 14px; font-size: .92rem; margin: 12px 0; }
.callout strong { color: var(--warn); }
.bar { height: 10px; border-radius: 6px; background: var(--surface-2); overflow: hidden; display: flex; margin: 6px 0 14px; }
.bar i { display: block; height: 100%; }
.bar i.n { background: var(--accent); }
.bar i.b { background: #c9a227; }
.bar i.p { background: #7a8f86; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: .82rem; color: var(--muted); }
.legend b { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }

/* Content */
.content { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; margin-bottom: 48px; }
@media (max-width: 900px) { .content { grid-template-columns: minmax(0, 1fr); } }
.prose { max-width: 720px; }
.prose h2 { font-size: 1.45rem; margin: 32px 0 10px; letter-spacing: -.01em; line-height: 1.25; }
.prose h3 { font-size: 1.12rem; margin: 22px 0 6px; }
.prose table { width: 100%; border-collapse: collapse; margin: 12px 0 20px; font-size: .95rem; font-variant-numeric: tabular-nums; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; }
.prose th { background: var(--surface-2); font-weight: 600; }
.prose td.r, .prose th.r { text-align: right; }

.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 10px 0 0; }

aside.side .card { margin-bottom: 16px; }
aside.side h2 { font-size: 1rem; }
aside.side ul { list-style: none; padding: 0; margin: 0; }
aside.side li a { display: block; padding: 7px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--text); font-size: .95rem; }
aside.side li a:hover { color: var(--accent); }
aside.side li:last-child a { border-bottom: 0; }

/* Tool grid (home) */
.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin: 16px 0 8px; }
.tool { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; text-decoration: none; color: var(--text); transition: border-color .15s, transform .15s; }
.tool:hover { border-color: var(--accent); transform: translateY(-1px); color: var(--text); }
.tool strong { display: block; margin-bottom: 2px; }
.tool span { color: var(--muted); font-size: .88rem; }
.tag { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; background: var(--accent-soft); color: var(--accent-strong); border-radius: 6px; padding: 1px 6px; margin-left: 6px; vertical-align: 2px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 28px 0; font-size: .9rem; color: var(--muted); }
.site-footer .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.site-footer h3 { font-size: .9rem; color: var(--text); margin: 0 0 8px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 4px 0; }
.site-footer a { color: var(--muted); }
.site-footer .legal { margin-top: 20px; font-size: .82rem; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }