/* Fakturo Website – keine externen Ressourcen (Schriften, Skripte, Tracker) */
:root{
  --bg:#f5f7fc; --surface:#ffffff; --fg:#0e1a33; --mut:#5a6a86; --line:#dfe6f2;
  --brand:#2563eb; --brand-d:#1d4ed8; --on-brand:#ffffff; --navy:#0f1f4d;
  --ok:#15803d; --ok-bg:#e3f5ea; --warn:#a85d00; --warn-bg:#fdefd6; --err:#b42318; --err-bg:#fde8e6;
  --chip:#e6eeff; --chip-fg:#1e40af; --shadow:0 18px 40px -22px rgba(15,31,77,.45);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"Cascadia Mono",Consolas,Menlo,monospace;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0a1122; --surface:#111b32; --fg:#e8eefb; --mut:#95a5c2; --line:#223253;
  --brand:#5b8def; --brand-d:#7aa3ff; --on-brand:#08122b; --navy:#16254f;
  --ok:#4ade80; --ok-bg:#10301f; --warn:#f3b562; --warn-bg:#33250f; --err:#ff8a80; --err-bg:#3a1714;
  --chip:#182a52; --chip-fg:#a9c3ff; --shadow:0 18px 40px -22px #000; color-scheme:dark}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:17px;line-height:1.65;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto}
a{color:var(--brand)}
code{font-family:var(--mono);font-size:.86em;background:var(--chip);color:var(--chip-fg);padding:.1em .4em;border-radius:5px;overflow-wrap:anywhere}
.wrap{max-width:1120px;margin:0 auto;padding-inline:20px}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:var(--on-brand);padding:8px 14px;z-index:99}
.skip:focus{left:8px;top:8px}

/* Kopf */
header.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:20px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--fg);font-weight:800;font-size:1.3rem;letter-spacing:-.02em}
.brand img{width:36px;height:36px;border-radius:9px}
.brand b{color:var(--brand)}
nav.main{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap;align-items:center}
nav.main a{color:var(--mut);text-decoration:none;font-weight:600;font-size:.95rem;padding:7px 12px;border-radius:9px}
nav.main a:hover{background:var(--chip);color:var(--chip-fg)}
nav.main a.cta{background:var(--brand);color:var(--on-brand)}
nav.main a.cta:hover{background:var(--brand-d);color:var(--on-brand)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font:inherit;font-weight:700;padding:13px 22px;border-radius:12px;text-decoration:none;border:1.5px solid transparent;cursor:pointer}
.btn.primary{background:var(--brand);color:var(--on-brand)}
.btn.primary:hover{background:var(--brand-d)}
.btn.ghost{border-color:var(--line);color:var(--fg);background:var(--surface)}
.btn.ghost:hover{border-color:var(--brand)}
.btn[disabled]{opacity:.6;cursor:wait}

/* Hero */
.hero{padding-block:64px 40px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--chip-fg);background:var(--chip);padding:5px 12px;border-radius:99px}
h1{font-size:clamp(2.2rem,5.2vw,3.7rem);line-height:1.05;letter-spacing:-.035em;margin:18px 0 18px;font-weight:800;text-wrap:balance}
h1 em{font-style:normal;color:var(--brand)}
.lede{font-size:1.18rem;color:var(--mut);max-width:34em;margin:0 0 26px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.facts{display:flex;gap:8px 18px;flex-wrap:wrap;margin:26px 0 0;padding:0;list-style:none;color:var(--mut);font-size:.92rem;font-weight:600}
.facts li::before{content:"✓";color:var(--ok);font-weight:800;margin-right:7px}

/* Illustration der Oberfläche */
.shot{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;font-size:.82rem;min-width:0}
.shot .tb{display:flex;align-items:center;gap:7px;padding:9px 12px;background:var(--navy);color:#e8eefb;font-weight:600}
.shot .tb i{width:10px;height:10px;border-radius:50%;background:#ffffff40}
.shot .tb span{margin-left:8px}
.shot .body{display:grid;grid-template-columns:34% 1fr;min-height:300px}
.shot .lst{border-right:1px solid var(--line);padding:8px;display:flex;flex-direction:column;gap:6px;background:var(--bg)}
.shot .row{padding:8px 10px;border-radius:9px;border:1px solid var(--line);background:var(--surface);line-height:1.3}
.shot .row b{display:block;font-size:.84rem}
.shot .row small{color:var(--mut)}
.shot .row.sel{border-color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)}
.shot .doc{padding:16px 18px;min-width:0}
.shot h4{margin:0 0 2px;font-size:1rem}
.shot .meta{color:var(--mut);margin-bottom:10px}
.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:2px 9px;border-radius:99px}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.err{background:var(--err-bg);color:var(--err)}
.shot table{width:100%;border-collapse:collapse;margin:8px 0}
.shot td{padding:5px 0;border-top:1px solid var(--line)}
.shot td:last-child{text-align:right;font-variant-numeric:tabular-nums}
.shot .alert{margin-top:10px;padding:9px 11px;border-radius:10px;background:var(--warn-bg);color:var(--warn);font-weight:600;line-height:1.4}

/* Abschnitte */
section.sec{padding-block:72px}
section.alt{background:var(--surface);border-block:1px solid var(--line)}
h2{font-size:clamp(1.7rem,3.6vw,2.4rem);letter-spacing:-.025em;line-height:1.15;margin:0 0 12px;text-wrap:balance}
.sub{color:var(--mut);max-width:40em;margin:0 0 36px;font-size:1.08rem}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px 22px 20px;min-width:0}
section.alt .card{background:var(--bg)}
.card h3{margin:12px 0 6px;font-size:1.08rem}
.card p{margin:0;color:var(--mut);font-size:.97rem}
.ico{width:42px;height:42px;border-radius:11px;background:var(--chip);color:var(--chip-fg);display:grid;place-items:center;font-size:1.3rem}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;counter-reset:s;padding:0;list-style:none;margin:0}
.steps li{counter-increment:s;background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:20px}
.steps li::before{content:counter(s);display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--brand);color:var(--on-brand);font-weight:800;margin-bottom:10px}
.steps b{display:block;margin-bottom:4px}
.steps span{color:var(--mut);font-size:.95rem}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;align-items:start}
ul.tick{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-direction:column;gap:9px}
ul.tick li{padding-left:28px;position:relative}
ul.tick li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}

/* Download */
.dl{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:24px;align-items:start}
.dlcard{background:var(--navy);color:#eaf0ff;border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.dlcard h3{margin:0 0 4px;font-size:1.5rem}
.dlcard p{color:#b9c8ea;margin:6px 0 18px}
.dlcard .btn.primary{background:#fff;color:#0f1f4d;font-size:1.05rem}
.dlcard .btn.primary:hover{background:#dfe8ff}
.dlcard dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:20px 0 0;font-size:.9rem}
.dlcard dt{color:#9fb3de}
.dlcard dd{margin:0;overflow-wrap:anywhere}
.dlcard dd.hash{font-family:var(--mono);font-size:.78rem}
.note{background:var(--warn-bg);color:var(--fg);border-left:4px solid var(--warn);border-radius:10px;padding:12px 16px;font-size:.95rem;margin-top:16px}
.note b{color:var(--warn)}
.req{display:grid;gap:14px}
.req .card{padding:18px 20px}

/* FAQ */
details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:4px 20px;margin-bottom:10px}
details[open]{border-color:var(--brand)}
summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--brand);font-size:1.4rem;line-height:1}
details[open] summary::after{content:"–"}
details p{margin:0 0 16px;color:var(--mut)}

/* Formular */
.contact{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:36px;align-items:start}
form.f{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px;display:grid;gap:16px;box-shadow:var(--shadow)}
.kinds{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;border:0;padding:0;margin:0}
.kinds legend{font-weight:700;margin-bottom:8px;padding:0}
.kinds label{position:relative}
.kinds input{position:absolute;opacity:0;inset:0;cursor:pointer}
.kinds span{display:block;text-align:center;padding:11px 8px;border:1.5px solid var(--line);border-radius:12px;font-weight:700;font-size:.93rem;background:var(--bg)}
.kinds input:checked+span{border-color:var(--brand);background:var(--chip);color:var(--chip-fg)}
.kinds input:focus-visible+span{outline:3px solid var(--brand);outline-offset:2px}
.fld{display:grid;gap:6px;min-width:0}
.fld label,.fld .l{font-weight:700;font-size:.95rem}
.fld .h{color:var(--mut);font-weight:400}
input[type=text],input[type=email],select,textarea,input[type=file]{font:inherit;color:var(--fg);background:var(--bg);border:1.5px solid var(--line);border-radius:11px;padding:11px 13px;width:100%;min-width:0}
textarea{min-height:150px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 25%,transparent)}
.two-f{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bugonly{display:grid;gap:16px}
.chk{display:flex;gap:11px;align-items:flex-start;font-size:.92rem;color:var(--mut)}
.chk input{margin-top:5px;width:18px;height:18px;flex:none}
.hp{position:absolute;left:-5000px;height:0;overflow:hidden}
.msg{padding:13px 16px;border-radius:12px;font-weight:600}
.msg.ok{background:var(--ok-bg);color:var(--ok)}
.msg.err{background:var(--err-bg);color:var(--err)}
.warnbox{font-size:.9rem;color:var(--mut);border:1px dashed var(--line);border-radius:12px;padding:12px 14px}

footer.foot{border-top:1px solid var(--line);padding-block:32px;color:var(--mut);font-size:.93rem}
footer .in{display:flex;gap:12px 28px;flex-wrap:wrap;justify-content:space-between;align-items:center}
footer a{color:var(--mut)}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
.legal{max-width:760px;padding-block:48px 72px}
.legal h1{font-size:2rem}
.legal h2{font-size:1.25rem;margin-top:30px}
.legal .ph{background:var(--warn-bg);color:var(--warn);padding:1px 6px;border-radius:5px;font-weight:700}

@media (max-width:900px){.hero,.dl,.contact{grid-template-columns:1fr}.hero{padding-top:36px;gap:32px}section.sec{padding-block:52px}nav.main a:not(.cta){display:none}.shot .body{grid-template-columns:1fr}.shot .lst{display:none}}
@media (max-width:520px){.kinds{grid-template-columns:1fr}.two-f{grid-template-columns:1fr}form.f{padding:18px}.dlcard{padding:22px}body{font-size:16px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.bugonly[hidden]{display:none}

/* Funktionsübersicht */
.docs{padding-block:40px 72px}
.dgrid{display:grid;grid-template-columns:210px minmax(0,1fr);gap:40px;align-items:start}
nav.side{position:sticky;top:84px;display:flex;flex-direction:column;gap:2px;font-size:.92rem}
nav.side a{color:var(--mut);text-decoration:none;padding:6px 12px;border-radius:8px;font-weight:600}
nav.side a:hover{background:var(--chip);color:var(--chip-fg)}
nav.side .grp{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mut);padding:14px 12px 4px;font-weight:700}
.docs main{display:flex;flex-direction:column;gap:20px;min-width:0}
.docs section{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px 28px;min-width:0;scroll-margin-top:84px}
.docs section.new{border-color:var(--brand)}
.docs h1{margin:0 0 4px;font-size:clamp(1.8rem,4vw,2.4rem)}
.docs h2{font-size:1.35rem;margin:0 0 6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.docs h3{margin:22px 0 4px;font-size:1rem}
.docs p{margin:8px 0}
.docs .lead{color:var(--mut);margin-top:0}
.docs ul{margin:8px 0;padding-left:1.2em;display:flex;flex-direction:column;gap:5px}
.tag{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;font-weight:800;background:var(--brand);color:var(--on-brand);padding:3px 9px;border-radius:99px}
.docs .scroll{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:12px}
.docs table{border-collapse:collapse;width:100%;font-size:.9rem}
.docs th{text-align:left;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--mut);background:var(--bg);padding:9px 14px;white-space:nowrap}
.docs td{padding:10px 14px;border-top:1px solid var(--line);vertical-align:top}
.docs td:first-child{white-space:nowrap}
.docs pre{background:#0f1b33;color:#dbe6fb;border-radius:12px;padding:16px 18px;overflow-x:auto;font-family:var(--mono);font-size:.82rem;line-height:1.6;margin:12px 0}
.docs .note{background:var(--warn-bg);color:var(--fg);border-left:4px solid var(--warn);border-radius:10px;padding:12px 16px;margin:14px 0;font-size:.93rem}
.docs .cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin:14px 0}
.docs .card{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:var(--bg)}
.docs .card b{display:block;margin-bottom:2px}
.docs .card span{color:var(--mut);font-size:.9rem}
.docs .flow{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:14px 0}
.docs .flow div{padding:8px 14px;border-radius:10px;background:var(--chip);color:var(--chip-fg);font-weight:700;font-size:.88rem}
.docs .flow i{color:var(--mut);font-style:normal}
nav.main a[aria-current=page]{background:var(--chip);color:var(--chip-fg)}
@media (max-width:900px){.dgrid{grid-template-columns:1fr}nav.side{position:static;flex-direction:row;flex-wrap:wrap;gap:6px}nav.side .grp{display:none}nav.side a{background:var(--surface);border:1px solid var(--line)}.docs section{padding:20px 18px}nav.main a:not(.cta):not([aria-current]){display:none}}