@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #f5f7f9;
  --surface: #ffffff;
  --surface-2: #f0f3f6;
  --text: #17212e;
  --muted: #5d6978;
  --border: #e2e7ed;
  --primary: #0a7a5e;
  --primary-hover: #086650;
  --primary-soft: #e5f3ee;
  --primary-ink: #065640;
  --accent: #f0a431;
  --accent-soft: #fdf3e2;
  --navy: #0d1b2c;
  --navy-2: #15293f;
  --on-navy: #e8eef5;
  --on-navy-muted: #9fb0c3;
  --shadow-sm: 0 1px 2px rgba(16, 32, 52, .06);
  --shadow: 0 1px 2px rgba(16, 32, 52, .05), 0 8px 24px -6px rgba(16, 32, 52, .10);
  --radius: 14px;
  --radius-sm: 9px;
  --maxw: 1120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b131d;
    --surface: #111c29;
    --surface-2: #172434;
    --text: #e6ecf2;
    --muted: #97a5b5;
    --border: #243446;
    --primary: #2fbf93;
    --primary-hover: #45cfa4;
    --primary-soft: #12302a;
    --primary-ink: #6fe0bd;
    --accent: #f3b04c;
    --accent-soft: #2b2415;
    --navy: #0e1a28;
    --navy-2: #13233a;
    --shadow-sm: none;
    --shadow: 0 0 0 1px var(--border);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}
.prose p, .prose li, .legal { -webkit-hyphens: auto; hyphens: auto; }
.legal a { overflow-wrap: anywhere; }

img, svg { display: block; max-width: 100%; }

a { color: var(--primary); text-underline-offset: 3px; }
a:hover { color: var(--primary-hover); }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; color: var(--text); }
h1 { font-size: clamp(1.9rem, 1.3rem + 2.4vw, 2.9rem); font-weight: 750; margin: 0 0 12px; }
h2 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem); font-weight: 700; margin: 48px 0 14px; }
h3 { font-size: 1.12rem; font-weight: 650; margin: 28px 0 8px; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; background: var(--surface); padding: 8px 14px; border-radius: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 750; font-size: 1.06rem; letter-spacing: -0.02em; }
.brand:hover { color: var(--text); }
.brand-mark { width: 32px; height: 32px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  text-decoration: none; color: var(--muted); font-weight: 550; font-size: .94rem;
  padding: 8px 12px; border-radius: 8px;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--surface-2); }

.menu { display: none; position: relative; }
.menu summary {
  list-style: none; cursor: pointer; padding: 8px 12px; border: 1px solid var(--border);
  border-radius: 9px; font-weight: 600; font-size: .92rem; background: var(--surface);
}
.menu summary::-webkit-details-marker { display: none; }
.menu[open] .menu-panel { display: grid; }
.menu-panel {
  display: none; position: absolute; right: 0; top: calc(100% + 8px); width: min(300px, calc(100vw - 32px));
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 8px; gap: 2px;
}
.menu-panel a { text-decoration: none; color: var(--text); padding: 10px 12px; border-radius: 8px; font-weight: 550; }
.menu-panel a:hover { background: var(--surface-2); }

@media (max-width: 900px) {
  .nav { display: none; }
  .menu { display: block; }
}

/* ---------- Hero (Startseite) ---------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 500px at 85% -10%, #1d4a5a 0%, transparent 60%),
              linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: var(--on-navy);
  padding: 72px 0 84px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000 30%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, #000 30%, transparent);
}
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero h1 { color: #fff; font-size: clamp(2.1rem, 1.4rem + 3vw, 3.4rem); }
.hero h1 em { font-style: normal; color: #5fe0b5; }
.hero p.lead { color: var(--on-navy-muted); font-size: 1.15rem; max-width: 540px; margin: 0 0 26px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: .8rem; font-weight: 650; text-transform: uppercase;
  letter-spacing: .08em; color: #5fe0b5; margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #5fe0b5; box-shadow: 0 0 0 4px rgba(95,224,181,.18); }
.trust { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 28px; padding: 0; list-style: none; color: var(--on-navy-muted); font-size: .92rem; }
.trust li { display: flex; align-items: center; gap: 8px; }
.trust svg { width: 18px; height: 18px; color: #5fe0b5; flex: none; }

.hero .calc { box-shadow: 0 24px 60px -20px rgba(0,0,0,.55); }
@media (max-width: 900px) {
  .hero { padding: 48px 0 56px; }
  .hero .container { grid-template-columns: 1fr; gap: 36px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--primary); color: #fff; font-weight: 650; font-size: .98rem;
  padding: 12px 20px; border-radius: 10px; border: 0; cursor: pointer; text-decoration: none;
  transition: background .15s, transform .15s;
}
.btn:hover { background: var(--primary-hover); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { background: #e9f7f2; color: var(--navy); }
.btn svg { width: 18px; height: 18px; }

/* ---------- Page header (Unterseiten) ---------- */
.page-head {
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  padding: 28px 0 36px;
}
.page-head .lead { color: var(--muted); font-size: 1.12rem; max-width: 720px; margin: 0; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 0 0 18px; font-size: .86rem; color: var(--muted); }
.crumbs li + li::before { content: "›"; margin-right: 6px; color: var(--muted); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--primary); }
.meta-line { margin-top: 16px; font-size: .86rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; }

/* ---------- Rechner ---------- */
.calc {
  display: grid; grid-template-columns: 1.25fr 1fr;
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  box-shadow: var(--shadow); overflow: hidden; margin: 32px 0 8px;
  color: var(--text);
}
.calc.compact { grid-template-columns: 1fr; margin: 0; }
.calc-inputs { padding: 28px; display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px 16px; align-content: start; }
.calc.compact .calc-inputs { padding: 22px 22px 18px; }
.calc-title { grid-column: 1 / -1; font-weight: 700; font-size: 1.02rem; margin: 0; display: flex; align-items: center; gap: 10px; }
.calc-title svg { width: 22px; height: 22px; color: var(--primary); }

.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .88rem; font-weight: 600; color: var(--text); }
.field .unit-wrap { position: relative; }
.field input, .field select {
  width: 100%; font: inherit; font-size: 1rem; color: var(--text);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 11px 13px; transition: border-color .15s, box-shadow .15s; appearance: none; -webkit-appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5 6 6.5l5-5' stroke='%237b8796' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 13px center; padding-right: 36px;
}
.field .unit-wrap input { padding-right: 58px; }
.field .unit { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: .88rem; pointer-events: none; }
.field input:hover, .field select:hover { border-color: #c5ced8; }
.field input:focus, .field select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 18%, transparent); }
.field small { color: var(--muted); font-size: .8rem; line-height: 1.4; }

.calc-result {
  background: linear-gradient(165deg, var(--navy) 0%, var(--navy-2) 100%);
  color: var(--on-navy); padding: 28px; display: flex; flex-direction: column; gap: 6px;
}
.calc.compact .calc-result { padding: 22px; }
.calc-result .label { font-size: .84rem; text-transform: uppercase; letter-spacing: .07em; color: var(--on-navy-muted); font-weight: 600; }
.calc-result .big { font-size: clamp(2.2rem, 1.8rem + 1.6vw, 3rem); font-weight: 780; letter-spacing: -0.03em; color: #fff; line-height: 1.1; font-variant-numeric: tabular-nums; }
.calc-result .big small { font-size: 1rem; font-weight: 550; color: var(--on-navy-muted); letter-spacing: 0; }
.calc-result dl { margin: 18px 0 0; display: grid; gap: 0; }
.calc-result dl > div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid rgba(255,255,255,.09); font-size: .95rem; }
.calc-result dt { color: var(--on-navy-muted); }
.calc-result dd { margin: 0; font-weight: 650; color: #fff; font-variant-numeric: tabular-nums; text-align: right; }
.calc-result .note { font-size: .82rem; color: var(--on-navy-muted); margin-top: 14px; line-height: 1.5; }
.calc-result .actions { margin-top: auto; padding-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.calc-result .share {
  background: rgba(255,255,255,.08); color: var(--on-navy); border: 1px solid rgba(255,255,255,.14);
  font: inherit; font-size: .86rem; font-weight: 600; padding: 8px 12px; border-radius: 8px; cursor: pointer;
}
.calc-result .share:hover { background: rgba(255,255,255,.14); }

.bars { display: grid; gap: 12px; margin-top: 18px; }
.bar-row { display: grid; gap: 5px; font-size: .88rem; }
.bar-row .bar-top { display: flex; justify-content: space-between; color: var(--on-navy-muted); }
.bar-row .bar-top b { color: #fff; font-variant-numeric: tabular-nums; }
.bar-track { height: 8px; background: rgba(255,255,255,.09); border-radius: 99px; overflow: hidden; }
.bar-fill { height: 100%; width: 0; background: #5fe0b5; border-radius: 99px; transition: width .35s ease; }
.bar-fill.alt { background: var(--accent); }

@media (max-width: 860px) {
  .calc { grid-template-columns: 1fr; }
  .calc-inputs, .calc-result { padding: 22px; }
}

/* Standby-Liste */
.rows { grid-column: 1 / -1; display: grid; gap: 8px; }
.row-item { display: grid; grid-template-columns: 1fr 120px 40px; gap: 8px; align-items: center; }
.row-item input { width: 100%; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; }
.row-item input:focus { outline: none; border-color: var(--primary); }
.icon-btn { width: 40px; height: 42px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); border-radius: var(--radius-sm); cursor: pointer; font-size: 1.1rem; }
.icon-btn:hover { color: #c0392b; border-color: #e7b4ad; }
.add-row { grid-column: 1 / -1; justify-self: start; }

/* ---------- Karten / Grids ---------- */
.section { padding: 72px 0; }
.section.tight { padding: 48px 0; }
.section-head { max-width: 640px; margin-bottom: 32px; }
.section-head h2 { margin-top: 0; }
.section-head p { color: var(--muted); margin: 0; font-size: 1.05rem; }

.tool-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1060px) { .tool-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .tool-grid { grid-template-columns: 1fr; } }
.tool-card {
  display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: var(--text);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-sm); transition: border-color .15s, box-shadow .15s, transform .15s;
}
.tool-card:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); box-shadow: var(--shadow); transform: translateY(-2px); color: var(--text); }
.tool-card h3 { margin: 4px 0 0; font-size: 1.06rem; }
.tool-card p { margin: 0; color: var(--muted); font-size: .93rem; line-height: 1.55; }
.tool-card .more { margin-top: auto; padding-top: 6px; color: var(--primary); font-weight: 600; font-size: .9rem; }
.icon-tile { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); }
.icon-tile svg { width: 23px; height: 23px; }
.icon-tile.amber { background: var(--accent-soft); color: #c27c10; }

.chip-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 15px; border-radius: 99px;
  background: var(--surface); border: 1px solid var(--border); text-decoration: none; color: var(--text); font-weight: 550; font-size: .93rem;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip span { color: var(--muted); font-weight: 450; font-size: .85rem; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature h3 { margin: 14px 0 6px; }
.feature p { margin: 0; color: var(--muted); font-size: .95rem; }
@media (max-width: 800px) { .features { grid-template-columns: 1fr; gap: 22px; } }

.band { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ---------- Fließtext ---------- */
.content { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; padding: 16px 0 24px; }
.content aside { position: relative; }
.content aside .sticky { position: sticky; top: 88px; display: grid; gap: 16px; }
@media (max-width: 960px) { .content { grid-template-columns: minmax(0, 1fr); gap: 12px; } .content aside .sticky { position: static; } }

.prose { max-width: 720px; }
.prose p, .prose li { color: color-mix(in srgb, var(--text) 88%, var(--muted)); }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose li { margin: 6px 0; }
.prose strong { color: var(--text); }

.formula {
  background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm); padding: 14px 18px; font-weight: 600; margin: 18px 0;
}

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); margin: 18px 0; }
table.data { width: 100%; border-collapse: collapse; font-size: .94rem; font-variant-numeric: tabular-nums; }
table.data th, table.data td { padding: 11px 16px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { background: var(--surface-2); font-weight: 650; font-size: .84rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
table.data tr:last-child td { border-bottom: 0; }
table.data td.num, table.data th.num { text-align: right; }
table.data a { font-weight: 600; text-decoration: none; }

.answer {
  background: var(--primary-soft); border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
  border-radius: var(--radius); padding: 18px 22px; margin: 8px 0 20px;
}
.answer p { margin: 0; color: var(--text); }
.answer strong { color: var(--primary-ink); }

/* Anzeige-Box */
.promo {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: var(--shadow-sm);
}
.promo::before { content: ""; position: absolute; left: 0; top: 16px; bottom: 16px; width: 4px; border-radius: 0 4px 4px 0; background: var(--accent); }
.promo .tag { display: inline-block; font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); background: var(--surface-2); border-radius: 5px; padding: 2px 7px; margin-bottom: 10px; }
.promo h3 { margin: 0 0 6px; font-size: 1.05rem; }
.promo p { margin: 0 0 14px; color: var(--muted); font-size: .94rem; }
.promo.wide { display: flex; align-items: center; gap: 24px; justify-content: space-between; margin: 36px 0; }
.promo.wide p { margin: 0; }
@media (max-width: 700px) { .promo.wide { flex-direction: column; align-items: flex-start; gap: 14px; } }

.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; font-size: .92rem; }
.toc b { display: block; margin-bottom: 8px; font-size: .8rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.toc a { display: block; padding: 4px 0; text-decoration: none; color: var(--text); }
.toc a:hover { color: var(--primary); }

/* FAQ */
.faq { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.faq details { border-bottom: 1px solid var(--border); }
.faq details:last-child { border-bottom: 0; }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 52px 16px 20px; font-weight: 620; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 22px; top: 50%; width: 10px; height: 10px; margin-top: -7px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq details > div { padding: 0 20px 18px; color: var(--muted); }
.faq details > div p { margin: 0; }

/* CTA-Band */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, #0c5e6e 100%); color: #fff; border-radius: 20px;
  padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 28px;
}
.cta h2 { color: #fff; margin: 0 0 6px; }
.cta p { margin: 0; color: rgba(255,255,255,.82); }
@media (max-width: 760px) { .cta { flex-direction: column; align-items: flex-start; padding: 28px; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: var(--on-navy-muted); margin-top: 80px; padding: 56px 0 28px; font-size: .93rem; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: #fff; font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 12px; }
.site-footer a { color: var(--on-navy-muted); text-decoration: none; display: block; padding: 3px 0; }
.site-footer a:hover { color: #fff; }
.site-footer .brand { color: #fff; margin-bottom: 12px; }
.site-footer .fine { border-top: 1px solid rgba(255,255,255,.08); margin-top: 40px; padding-top: 20px; font-size: .82rem; line-height: 1.6; }
@media (max-width: 800px) { .site-footer .cols { grid-template-columns: 1fr 1fr; } .site-footer .cols > :first-child { grid-column: 1 / -1; } }

.result-bar {
  position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 60;
  display: none; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--navy); color: var(--on-navy-muted); border: 1px solid rgba(255,255,255,.1);
  border-radius: 14px; padding: 12px 16px; box-shadow: 0 12px 32px -8px rgba(0,0,0,.45);
  font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; cursor: pointer;
  transform: translateY(140%); transition: transform .25s ease;
}
.result-bar b { color: #fff; font-size: 1.25rem; letter-spacing: -0.02em; text-transform: none; font-variant-numeric: tabular-nums; }
@media (max-width: 860px) {
  .result-bar { display: flex; }
  .result-bar.show { transform: translateY(0); }
}

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0;
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 10px; font-size: .9rem; font-weight: 550;
  transition: opacity .2s, transform .2s; pointer-events: none; z-index: 99;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.muted { color: var(--muted); }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.legal h2 { font-size: 1.2rem; margin-top: 32px; }
.legal address { font-style: normal; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .section { padding: 52px 0; }
  .row-item { grid-template-columns: 1fr 92px 40px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}
.chip-grid.centered { justify-content: center; }
.answer-top { margin: 32px 0 0; }
.answer-top + .calc { margin-top: 20px; }