/* ---------- Design-Tokens (Variante wird hier umgeschaltet) ---------- */
:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f4f6f8;
  --c-text: #1b2430;
  --c-text-soft: #4b5563;
  --c-line: #e2e6ea;
  --c-brand: #b3261e;        /* FileZilla-Rot, dezent eingesetzt */
  --c-brand-ink: #ffffff;
  --c-accent: #0b5cad;       /* Links, Fokus */
  --c-ok: #1b7f4b;
  --c-warn: #b36b00;
  --c-pro: #5b2c83;          /* Pro-Hinweise */
  --radius: 10px;
  /* Design-Entscheidung 2026-11-08: Variante A – Klar & Technisch */
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 8px 24px -16px rgba(0,0,0,.25);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --measure: 72ch;
  --wrap: 1180px;
}

/* ---------- Basis ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:1.0625rem;line-height:1.6;color:var(--c-text);background:var(--c-bg)}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--c-accent);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,1.4rem + 2vw,2.75rem)}
h2{font-size:clamp(1.4rem,1.1rem + 1vw,1.9rem);margin-top:2em}
h3{font-size:1.2rem;margin-top:1.6em}
p,ul,ol{margin:0 0 1.1em}
code,kbd,pre{font-family:var(--mono);font-size:.92em}
code,kbd{background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:4px;padding:.1em .35em}
pre{background:#0f172a;color:#e5e7eb;padding:1rem 1.2rem;border-radius:var(--radius);overflow:auto}
pre code{background:none;border:0;padding:0;color:inherit}
table{border-collapse:collapse;width:100%;margin:1.2em 0;font-size:.97em}
th,td{border-bottom:1px solid var(--c-line);padding:.6em .7em;text-align:left;vertical-align:top}
th{background:var(--c-bg-soft);font-weight:600}
hr{border:0;border-top:1px solid var(--c-line);margin:2.5rem 0}
.skip-link{position:absolute;left:-999px;top:0;background:var(--c-text);color:#fff;padding:.6em 1em;z-index:100}
.skip-link:focus{left:0}
.visually-hidden{position:absolute!important;clip:rect(0 0 0 0);width:1px;height:1px;overflow:hidden;white-space:nowrap}

/* ---------- Layout ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(1rem,3vw,2rem)}
.prose{max-width:var(--measure)}
.grid{display:grid;gap:1.25rem}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.layout{display:grid;gap:2.5rem;grid-template-columns:minmax(0,1fr)}
@media(min-width:960px){.layout--aside{grid-template-columns:minmax(0,1fr) 320px}}
main{padding:2rem 0 4rem}

/* ---------- Header ---------- */
.site-header{border-bottom:1px solid var(--c-line);background:var(--c-bg);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;gap:1.5rem;min-height:64px}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.15rem;color:var(--c-text);text-decoration:none}
.brand__mark{width:30px;height:30px;border-radius:8px;background:var(--c-brand);display:grid;place-items:center;color:#fff;font-size:.9rem;font-weight:800}
.brand__tag{display:none;font-size:.78rem;font-weight:500;color:var(--c-text-soft);border-left:1px solid var(--c-line);padding-left:.6rem;margin-left:.2rem}
@media(min-width:720px){.brand__tag{display:inline}}
.nav-toggle{margin-left:auto;background:none;border:1px solid var(--c-line);border-radius:8px;padding:.45rem .7rem;font:inherit;cursor:pointer}
.site-nav{display:none;margin-left:auto}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:.25rem;flex-wrap:wrap}
.site-nav a{display:block;padding:.5rem .75rem;border-radius:8px;color:var(--c-text);text-decoration:none;font-weight:500}
.site-nav a:hover,.site-nav .current-menu-item>a{background:var(--c-bg-soft)}
.site-nav .btn{margin-left:.5rem}
@media(min-width:900px){.nav-toggle{display:none}.site-nav{display:block}}
.site-nav.is-open{display:block;position:absolute;left:0;right:0;top:64px;background:var(--c-bg);border-bottom:1px solid var(--c-line);padding:1rem}
.site-nav.is-open ul{flex-direction:column}

/* ---------- Buttons & Badges ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--c-brand);color:var(--c-brand-ink);border:0;border-radius:var(--radius);padding:.75rem 1.2rem;font-weight:600;text-decoration:none;cursor:pointer;line-height:1.2}
.btn:hover{filter:brightness(.92)}
.btn--ghost{background:transparent;color:var(--c-text);border:1px solid var(--c-line)}
.btn--pro{background:var(--c-pro)}
.btn--lg{padding:1rem 1.5rem;font-size:1.1rem}
.badge{display:inline-block;font-size:.78rem;font-weight:600;padding:.2em .6em;border-radius:999px;background:var(--c-bg-soft);color:var(--c-text-soft)}
.badge--ok{background:#e4f5ea;color:var(--c-ok)}
.badge--pro{background:#efe7f6;color:var(--c-pro)}
.badge--ad{background:#fff4e0;color:var(--c-warn)}
.badge--err{background:#fdecea;color:#8f1d16}
.badge--tool{background:#e7f1fb;color:var(--c-accent)}

/* ---------- Hero ---------- */
.hero{padding:3.5rem 0 3rem;background:var(--c-bg-soft);border-bottom:1px solid var(--c-line)}
.hero__grid{display:grid;gap:2rem;align-items:center;grid-template-columns:minmax(0,1fr)}
@media(min-width:960px){.hero__grid{grid-template-columns:7fr 5fr}}
.hero__main{display:flex;flex-direction:column;gap:1rem;align-items:flex-start}
.hero__main h1{margin:0}
.hero__errors{display:flex;flex-direction:column;gap:.7rem}
.eyebrow{font-size:.8rem;font-weight:600;color:var(--c-text-soft);text-transform:uppercase;letter-spacing:.04em}
.hero__error{display:flex;justify-content:space-between;gap:.75rem;padding:.75rem .9rem;border-radius:8px;background:var(--c-bg-soft);color:var(--c-text);text-decoration:none;font-weight:500}
.hero__error:hover{background:var(--c-line)}
.hero__more{font-size:.9rem;font-weight:600}
.hero h1{max-width:20ch}
.hero__lead{font-size:1.2rem;color:var(--c-text-soft);max-width:55ch}
.hero__actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:.5rem}
.hero__meta{display:flex;gap:1.25rem;flex-wrap:wrap;margin-top:.25rem;font-size:.9rem;color:var(--c-text-soft)}

/* ---------- Cards ---------- */
.card{background:var(--c-bg);border:1px solid var(--c-line);border-radius:12px;padding:1.25rem;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:.6rem}
.card .badge{align-self:flex-start}
.card p{margin:0;color:var(--c-text-soft);font-size:.95rem}
.card__meta{margin-top:auto}
.card h3{margin-top:0}
.card a.cover{color:inherit;text-decoration:none}
.card a.cover:hover h3{color:var(--c-accent)}
.card__meta{font-size:.85rem;color:var(--c-text-soft)}

/* ---------- Boxen ---------- */
.box{border:1px solid var(--c-line);border-left:4px solid var(--c-accent);border-radius:var(--radius);padding:1rem 1.2rem;margin:1.5em 0;background:var(--c-bg-soft)}
.box--pro{border-left-color:var(--c-pro)}
.box--warn{border-left-color:var(--c-warn)}
.box--ok{border-left-color:var(--c-ok)}
.box__title{font-weight:700;margin-bottom:.3em}
.disclosure{font-size:.85rem;color:var(--c-text-soft)}

/* ---------- Artikel ---------- */
.entry-header{margin-bottom:1.5rem}
.entry-meta{display:flex;flex-wrap:wrap;gap:1rem;font-size:.9rem;color:var(--c-text-soft);margin-top:.5rem}
.entry-meta time{font-variant-numeric:tabular-nums}
.author-box{display:flex;gap:1rem;align-items:flex-start;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--c-line)}
.author-box img{width:56px;height:56px;border-radius:50%}
.toc{background:var(--c-bg-soft);border-radius:var(--radius);padding:1rem 1.25rem;margin:1.5rem 0}
.toc ol{margin:0;padding-left:1.2rem}
.steps{counter-reset:step;list-style:none;padding:0}
.steps>li{counter-increment:step;position:relative;padding-left:3rem;margin-bottom:1.5rem}
.steps>li::before{content:counter(step);position:absolute;left:0;top:0;width:2.1rem;height:2.1rem;border-radius:50%;background:var(--c-text);color:#fff;display:grid;place-items:center;font-weight:700}
.breadcrumbs{font-size:.88rem;color:var(--c-text-soft);margin-bottom:1rem}
.breadcrumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.4rem}
.breadcrumbs li+li::before{content:"›";margin-right:.4rem}

/* ---------- Sidebar ---------- */
.aside .card+.card{margin-top:1.25rem}
.aside .ad-slot{min-height:250px;display:grid;place-items:center;background:var(--c-bg-soft);border:1px dashed var(--c-line);border-radius:var(--radius);color:var(--c-text-soft);font-size:.85rem}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--c-line);background:var(--c-bg-soft);padding:2.5rem 0 2rem;font-size:.92rem;color:var(--c-text-soft)}
.site-footer h4{font-size:.95rem;margin-bottom:.6em;color:var(--c-text)}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:.3em 0}
.site-footer a{color:inherit}
.footer-note{margin-top:2rem;padding-top:1.25rem;border-top:1px solid var(--c-line);font-size:.85rem}

/* ---------- Formulare (Tools) ---------- */
.tool{border:1px solid var(--c-line);border-radius:var(--radius);padding:1.5rem;background:var(--c-bg)}
.tool label{display:block;font-weight:600;margin:.8rem 0 .3rem}
.tool input,.tool select,.tool textarea{width:100%;font:inherit;padding:.6rem .7rem;border:1px solid var(--c-line);border-radius:8px}
.tool output{display:block;margin-top:1rem;padding:1rem;background:var(--c-bg-soft);border-radius:8px;font-family:var(--mono);white-space:pre-wrap}

/* ---------- Druck ---------- */
@media print{.site-header,.site-footer,.aside,.nav-toggle{display:none}body{font-size:11pt}}

/* ---------- Anzeigen ---------- */
.ad{margin:1.5rem 0;text-align:center}
.ad__label{display:block;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--c-text-soft);margin-bottom:.3rem}
.ad__placeholder{min-height:120px;display:grid;place-items:center;border:1px dashed var(--c-line);border-radius:var(--radius);background:var(--c-bg-soft);color:var(--c-text-soft);font-size:.85rem;padding:1rem}
.ad--sidebar .ad__placeholder{min-height:250px}

/* ---------- Download-Zwischenseite ---------- */
.dl-start{max-width:860px;text-align:center;padding-top:1rem}
.dl-start__head h1{margin-bottom:1rem}
.dl-start__checks{list-style:none;margin:0 auto 1rem;padding:0;display:flex;justify-content:center;gap:1.5rem;flex-wrap:wrap;font-weight:600;color:var(--c-ok)}
.dl-start__checks li::before{content:"✔";margin-right:.4rem}
.dl-start__buttons{display:flex;flex-direction:column;gap:.75rem;align-items:center;margin:1.5rem 0 .75rem}
.dl-start__buttons .btn{width:100%;max-width:560px;justify-content:center}
.dl-start__version{font-size:.9rem;color:var(--c-text-soft)}
.dl-start__text,.dl-start__next{margin:1.5rem auto 0;text-align:left}
.dl-start__next ul{padding-left:1.2rem}