/* Karrenkasse – Grundlayout. Systemschriften (keine externen Fonts, DSGVO-freundlich). */
:root {
  --bg: #F2F4F7;
  --surface: #FFFFFF;
  --ink: #141A26;
  --muted: #586174;
  --line: #D9DEE6;
  --accent: #1F4BD8;        /* Kennzeichen-Blau */
  --accent-ink: #FFFFFF;
  --accent-soft: #E3EAFC;
  --signal: #F5B400;        /* Warnweste-Gelb, nur für Hervorhebungen */
  --signal-soft: #FFF3CC;
  --good: #1B7F4B;
  --good-soft: #DFF3E8;
  --font: -apple-system, BlinkMacSystemFont, "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:not([data-theme="light"]) {
    --bg: #0E121A; --surface: #161C27; --ink: #E7EBF2; --muted: #9AA4B6; --line: #2A3242;
    --accent: #6F93FF; --accent-ink: #0B1330; --accent-soft: #1D2A4D;
    --signal: #FFCB3D; --signal-soft: #3A3010; --good: #5FD39A; --good-soft: #143325;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E121A; --surface: #161C27; --ink: #E7EBF2; --muted: #9AA4B6; --line: #2A3242;
  --accent: #6F93FF; --accent-ink: #0B1330; --accent-soft: #1D2A4D;
  --signal: #FFCB3D; --signal-soft: #3A3010; --good: #5FD39A; --good-soft: #143325;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 16px; line-height: 1.55;
}
a { color: var(--accent); }
.num { font-variant-numeric: tabular-nums; }

.wrap {
  max-width: 1080px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* Kopf und Fuß */
.site-head { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 19px; letter-spacing: -0.01em; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 7px; background: var(--accent); color: var(--accent-ink);
  display: grid; place-items: center; font-size: 15px; font-weight: 800; position: relative; overflow: hidden;
}
.logo-mark::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: var(--signal); }
.site-head nav { display: flex; gap: 18px; font-size: 15px; }
.site-head nav a { color: var(--muted); text-decoration: none; }
.site-head nav a:hover { color: var(--ink); }

.site-foot { border-top: 1px solid var(--line); margin-top: 56px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; padding-block: 24px; color: var(--muted); font-size: 14px; }
.site-foot a { color: var(--muted); }

/* Typografie */
h1, h2, h3 { text-wrap: balance; letter-spacing: -0.015em; }
h1 { font-size: clamp(28px, 4.2vw, 40px); line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: 24px; line-height: 1.25; margin: 40px 0 12px; }
h3 { font-size: 18px; margin: 24px 0 8px; }
.lead { font-size: 18px; color: var(--muted); max-width: 62ch; margin: 0; }
.prose { max-width: 70ch; }
.prose p, .prose li { color: var(--ink); }
.eyebrow { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); margin: 0 0 8px; }

/* Rechner */
.calc-hero { padding-block: 36px 8px; }
.calc { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; margin-top: 24px; align-items: start; }
@media (min-width: 900px) { .calc { grid-template-columns: minmax(0, 380px) minmax(0, 1fr); } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px; min-width: 0; }
.panel h2 { margin: 0 0 14px; font-size: 17px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 14px; font-weight: 600; }
.field .hint { font-size: 13px; color: var(--muted); }
.input-unit { display: flex; align-items: stretch; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); overflow: hidden; }
.input-unit:focus-within { outline: 2px solid var(--accent); outline-offset: -1px; }
.input-unit input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); font: inherit; padding: 10px 12px; font-variant-numeric: tabular-nums; }
.input-unit input:focus { outline: none; }
.input-unit span { padding: 10px 12px; color: var(--muted); border-left: 1px solid var(--line); }
select { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; margin-bottom: 12px; }
.check input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--accent); }
details.more { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 4px; }
details.more summary { cursor: pointer; font-size: 14px; font-weight: 600; color: var(--muted); margin-bottom: 12px; }

.verdict { background: var(--good-soft); border-radius: 12px; padding: 16px 18px; margin-bottom: 16px; }
.verdict strong { font-size: 22px; display: block; line-height: 1.25; }
.verdict p { margin: 4px 0 0; font-size: 14px; color: var(--ink); }

.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 700px) { .cards { grid-template-columns: minmax(0, 1fr); } }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.card.best { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.card .tag { align-self: flex-start; font-size: 12px; font-weight: 700; border-radius: 999px; padding: 2px 10px; background: var(--accent-soft); color: var(--accent); }
.card h3 { margin: 6px 0 2px; font-size: 16px; }
.card .rate { font-size: 13px; color: var(--muted); margin: 0; }
.card .big { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; margin: 8px 0 0; font-variant-numeric: tabular-nums; }
.card .unit { font-size: 13px; color: var(--muted); margin: 0 0 8px; }
.card dl { margin: 0; display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; font-size: 14px; border-top: 1px dashed var(--line); padding-top: 10px; }
.card dt { color: var(--muted); }
.card dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.netto-row { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 16px; font-size: 14px; color: var(--muted); }
.netto-row b { color: var(--ink); font-variant-numeric: tabular-nums; }

.cta { margin-top: 20px; border-radius: 12px; padding: 16px 18px; background: var(--signal-soft); display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; }
.cta p { margin: 0; font-size: 15px; max-width: 52ch; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 700; border-radius: 10px; padding: 10px 16px; }
.btn:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ad-label { font-size: 12px; color: var(--muted); margin-left: 6px; }

.note { font-size: 13px; color: var(--muted); margin-top: 14px; }
table.info { width: 100%; border-collapse: collapse; font-size: 15px; }
table.info th, table.info td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.info th { font-size: 13px; color: var(--muted); font-weight: 600; }
.table-box { overflow-x: auto; }

/* Startseite */
.hero { padding-block: 48px 16px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 28px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; text-decoration: none; color: var(--ink); display: flex; flex-direction: column; gap: 6px; }
.tile:hover { border-color: var(--accent); }
.tile h3 { margin: 0; font-size: 17px; }
.tile p { margin: 0; color: var(--muted); font-size: 14px; }
.tile .soon { font-size: 12px; font-weight: 700; color: var(--muted); }
.tile.disabled { opacity: 0.6; pointer-events: none; }

@media (prefers-reduced-motion: no-preference) { .tile, .btn { transition: border-color .15s, filter .15s; } .btn:hover { filter: brightness(1.08); } }