/* ============================================================
   Mietchecker — Knowledge System (Baukasten)
   Gemeinsame CI-Basis + wiederverwendbare Bausteine für /wissen-Seiten.
   NICHT enthalten (bleibt pro Seite individuell): Hero, Reihenfolge,
   Texte, SEO, Schema, interne Verlinkung.
   ============================================================ */

/* ---- Tokens ---- */
:root{
  --paper:#F5F5F4; --surface:#FFFFFF;
  --ink:#18181B; --ink-2:#52525B; --ink-3:#8A8A93;
  --line:rgba(20,20,25,0.11); --line-2:rgba(20,20,25,0.06);
  --navy:#18181B;
  --accent:#CC3A24; --accent-deep:#9E2A16; --accent-soft:#FBE3DD;
  --info:#4A4036; --info-soft:#EFEFEF;
  --err:#C0392B; --err-soft:#FBE3DD;
  --warn:#B07A12; --warn-soft:#F6ECD6;
  --ok:#2E5A39; --ok-soft:#E4EDE6;
  --r-lg:9px; --r-md:6px; --r-sm:4px;
  --maxw:760px;   /* Knowledge-Page-Lesebreite; Hub überschreibt lokal */
}

/* ---- Reset / Basis-Typografie ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:'Hanken Grotesk',system-ui,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5;letter-spacing:-0.01em}
.display{font-family:'Bricolage Grotesque',system-ui,sans-serif;letter-spacing:-0.02em;line-height:1.05;font-weight:700}
.mono{font-family:'IBM Plex Mono',monospace;letter-spacing:0}
.serifdoc{font-family:'Newsreader',Georgia,serif}
a{color:inherit}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{display:block;max-width:100%}
::selection{background:var(--accent);color:#fff}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---- Buttons / Badges / Labels ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:var(--r-md);font-weight:600;font-size:16px;padding:14px 22px;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,background .16s ease;white-space:nowrap;letter-spacing:-0.01em;text-decoration:none}
.btn--primary{background:var(--ink);color:#fff;box-shadow:0 1px 2px rgba(20,20,25,.3),0 10px 22px -12px rgba(20,20,25,.6)}
.btn--primary:hover{background:#000;transform:translateY(-1px)}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px rgba(204,58,36,.8)}
.btn--accent:hover{transform:translateY(-1px)}
.btn--ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn--ghost:hover{border-color:var(--ink-3)}
.btn--ink{background:var(--navy);color:#fff}
.btn--ink:hover{transform:translateY(-1px)}
.btn--sm{font-size:14px;padding:9px 16px}
.btn--block{width:100%}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;text-transform:uppercase;letter-spacing:0.18em;color:var(--accent-deep)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:12.5px;font-weight:600}
.badge--err{background:var(--err-soft);color:var(--err)}
.badge--warn{background:var(--warn-soft);color:var(--warn)}
.badge--ok{background:var(--ok-soft);color:var(--ok)}
.badge--neutral{background:var(--info-soft);color:var(--info)}
.dot{width:8px;height:8px;border-radius:50%;flex:none;display:inline-block}

/* ---- §-Ticker ---- */
.ticker{background:var(--ink);background-image:linear-gradient(180deg,#26262d,var(--ink));overflow:hidden;white-space:nowrap;border-bottom:1.5px solid var(--ink)}
.ticker .run{display:inline-block;padding:8px 0;animation:marq 30s linear infinite;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase}
.ticker .run s{margin:0 20px;color:rgba(255,255,255,.6);text-decoration:none}
.ticker .run b{color:#EF7E63;font-weight:500}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---- App-Bar ---- */
.appbar{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.appbar-in{max-width:var(--maxw);margin:0 auto;padding:0 22px;height:60px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--navy);display:grid;place-items:center;flex:none}
.logo-word{font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:18px;letter-spacing:-0.03em;color:var(--ink)}
.logo-word .tld{color:var(--accent);font-weight:600}
.appbar-nav{display:flex;align-items:center;gap:18px}
.appbar-nav a.nl{font-size:14px;color:var(--ink-2);text-decoration:none}
.appbar-nav a.nl.active{color:var(--ink);font-weight:600}
.appbar-nav a.nl:hover{color:var(--ink)}

/* ---- Breadcrumb ---- */
.breadcrumb{font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);padding-top:26px;display:flex;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-3);text-decoration:none}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .cur{color:var(--ink-2)}

/* ---- Section-Köpfe ---- */
.sec{margin-top:48px}
.sec h2{font-size:clamp(24px,2.6vw,30px);letter-spacing:-0.02em}
.sec .sub{font-size:15px;color:var(--ink-2);margin-top:8px;line-height:1.55}
.section-mini{font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--ink-3);margin:34px 0 6px}

/* ============================================================
   BAUSTEINE
   ============================================================ */

/* [1] Das Wichtigste in Kürze — .tldr */
.tldr{background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:var(--r-md);padding:24px 26px;margin-top:34px;box-shadow:0 18px 40px -42px rgba(20,20,25,.5)}
.tldr .lbl{font-family:'IBM Plex Mono',monospace;font-size:10.5px;text-transform:uppercase;letter-spacing:.14em;color:var(--accent-deep);display:flex;align-items:center;gap:8px}
.tldr ul{list-style:none;margin:15px 0 0;display:grid;gap:12px}
.tldr li{display:flex;gap:11px;font-size:15.5px;line-height:1.5;color:var(--ink)}
.tldr li svg{flex:none;margin-top:3px;color:var(--ok)}

/* [2] Vergleichstabelle — .cmp (col.yes / col.no) */
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.cmp .col{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.cmp .col h3{font-size:14px;padding:13px 18px;display:flex;align-items:center;gap:9px;border-bottom:1px solid var(--line);font-weight:700}
.cmp .col.yes h3{background:var(--ok-soft);color:var(--ok)}
.cmp .col.no h3{background:var(--accent-soft);color:var(--accent-deep)}
.cmp .col ul{list-style:none}
.cmp .col li{display:flex;gap:10px;padding:11px 18px;font-size:14px;color:var(--ink-2);border-bottom:1px solid var(--line-2);align-items:flex-start}
.cmp .col li:last-child{border-bottom:none}
.cmp .col li svg{flex:none;margin-top:2px}
@media(max-width:560px){.cmp{grid-template-columns:1fr}}

/* [3] Wiedererkennung / Alltagssituationen — .scen-grid / .scen */
.scen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.scen{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:20px}
.scen .tag{font-family:'IBM Plex Mono',monospace;font-size:9.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3)}
.scen h3{font-size:16px;font-weight:700;margin-top:8px;line-height:1.25}
.scen p{font-size:13.5px;color:var(--ink-2);margin-top:8px;line-height:1.55}
.scen a.more{display:inline-flex;align-items:center;gap:5px;margin-top:12px;font-size:13px;font-weight:600;color:var(--accent-deep);text-decoration:none}
.scen a.more:hover{gap:8px}
@media(max-width:760px){.scen-grid{grid-template-columns:1fr}}

/* [4] Schritt-für-Schritt — .steps / .step */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 18px;position:relative}
.step .n{width:30px;height:30px;border-radius:8px;background:var(--navy);color:#fff;display:grid;place-items:center;font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:14px;margin-bottom:12px}
.step h3{font-size:15.5px;font-weight:700}
.step p{font-size:13px;color:var(--ink-2);margin-top:5px;line-height:1.5}
.step .opt{font-family:'IBM Plex Mono',monospace;font-size:9px;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);margin-top:8px}
@media(max-width:720px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:420px){.steps{grid-template-columns:1fr}}

/* [5] Kostenarten-Grid — .cost-list */
.cost-list{display:grid;grid-template-columns:1fr 1fr;gap:2px 24px;margin-top:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:8px 22px}
.cost-list a{display:flex;align-items:center;gap:10px;padding:12px 0;font-size:15px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line-2)}
.cost-list a:hover{color:var(--accent)}
.cost-list a .ci{width:26px;height:26px;border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;color:var(--ink-2);flex:none}
.cost-list a:hover .ci{border-color:var(--accent);color:var(--accent)}
@media(max-width:560px){.cost-list{grid-template-columns:1fr}}

/* [6] FAQ — .qa (details/summary) */
.qa{border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);margin-bottom:10px;overflow:hidden}
.qa summary{padding:18px 20px;font-size:16px;font-weight:600;display:flex;justify-content:space-between;align-items:center;cursor:pointer;gap:14px;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary .pl{width:26px;height:26px;border-radius:50%;background:var(--paper);display:grid;place-items:center;flex:none;transition:transform .2s}
.qa[open] summary .pl{transform:rotate(45deg)}
.qa .ans{padding:0 20px 20px;font-size:15px;color:var(--ink-2);line-height:1.65}

/* [7] Quellen — .sources */
.sources{margin-top:48px;border-top:1px solid var(--line);padding-top:22px}
.sources h2{font-size:13px;font-family:'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3)}
.sources ul{list-style:none;margin:14px 0 0;display:grid;gap:9px}
.sources li{font-size:13.5px;color:var(--ink-2);line-height:1.5;padding-left:18px;position:relative}
.sources li::before{content:'§';position:absolute;left:0;color:var(--accent);font-weight:700}
.sources a{color:var(--accent-deep)}

/* [8] CTA — .big-cta */
.big-cta{background:var(--navy);background-image:linear-gradient(160deg,#23232a 0%,var(--ink) 46%,#121216 100%);color:#fff;border-radius:var(--r-lg);padding:42px 34px;margin-top:52px;text-align:center;box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 24px 48px -34px rgba(20,20,25,.6)}
.big-cta h2{font-size:clamp(24px,3vw,32px);line-height:1.18}
.big-cta p{color:rgba(255,255,255,.72);font-size:15.5px;margin:12px auto 0;max-width:480px;line-height:1.55}

/* [9] Cluster-Navigation / verwandte Fragen — .cluster (Knowledge Graph) */
.cluster{display:grid;gap:10px;margin-top:22px}
.cluster a{display:flex;align-items:center;justify-content:space-between;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:16px 20px;text-decoration:none;font-weight:600;font-size:15.5px;color:var(--ink);line-height:1.35;transition:border-color .15s,transform .15s}
.cluster a:hover{border-color:var(--accent);transform:translateX(3px)}
.cluster a .arr{color:var(--ink-3);flex:none}
.cluster a:hover .arr{color:var(--accent)}
.cluster a.prv{background:var(--accent-soft);border-color:var(--accent-soft);color:var(--accent-deep)}
.cluster a.prv:hover{border-color:var(--accent)}

/* ---- Footer ---- */
.appfoot{background:var(--navy);background-image:linear-gradient(180deg,#1f1f26,var(--ink));color:#fff;padding:40px 22px 36px;margin-top:50px}
.appfoot-in{max-width:var(--maxw);margin:0 auto}
.appfoot-row{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:flex-start}
.appfoot a{color:rgba(255,255,255,.78);text-decoration:none;font-size:14px}
.appfoot a:hover{color:#fff}
.appfoot-legal{margin-top:24px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:rgba(255,255,255,.6);line-height:1.6}

.disclaim{font-size:11.5px;color:var(--ink-3);margin-top:28px;line-height:1.6}

/* ---- Motion / Material ---- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
body::after{content:'';position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.02;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}