/* =============================================================
   Thomas Aistleitner — Personenseite (Startseite, EN, Impressum, Datenschutz)
   Design-System "Ingenieursbüro", helle Variante.
   Papier, Anthrazit-Text, Haarlinien, Messwert-Typografie.
   Keine Verläufe. Keine Glows. Keine Schlagschatten.
   ============================================================= */

/* =============================================================
   Thomas Aistleitner — Startseite (Person)
   Design-System "Ingenieursbüro", helle Variante.
   Papier, Anthrazit-Text, Haarlinien, Messwert-Typografie.
   Keine Verläufe. Keine Glows. Keine Schlagschatten.
   ============================================================= */
:root{
  --ink:#0d0f12; --ink-2:#171b20;
  --paper:#f2f0ec; --paper-2:#eceae4; --paper-3:#e5e2db;
  --line:rgba(13,15,18,.13); --line-2:rgba(13,15,18,.22);
  --tx:#16181c; --tx-2:#43474d; --tx-3:#7c8085; --tx-4:#a3a6a9;
  --tx-inv:#e9e7e2; --tx-inv2:#a7a9a6; --line-inv:rgba(233,231,226,.12);
  --signal:#e85a2f; --signal-deep:#c94c26;
  --serif:"IBM Plex Serif",Georgia,serif;
  --sans:"IBM Plex Sans",-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --wrap:1180px; --gut:clamp(1.25rem,4vw,3rem); --sec:clamp(4rem,8vw,7rem);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--tx-2);font-family:var(--sans);
  font-size:1.0625rem;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit}
::selection{background:var(--signal);color:#fff}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

h1,h2,h3{font-family:var(--serif);font-weight:400;color:var(--tx);margin:0;
  letter-spacing:-.018em;line-height:1.1;text-wrap:balance}
.t-display{font-size:clamp(2.3rem,5.2vw,4rem);line-height:1.04;letter-spacing:-.028em}
.t-h2{font-size:clamp(1.7rem,3.3vw,2.6rem);line-height:1.12}
.t-h3{font-size:clamp(1.18rem,1.9vw,1.42rem);line-height:1.25}
p{margin:0 0 1.1em;text-wrap:pretty}
p:last-child{margin-bottom:0}
strong,b{color:var(--tx);font-weight:600}
.lead{font-size:clamp(1.06rem,1.5vw,1.25rem);line-height:1.58;color:var(--tx);max-width:35em}
.measure{max-width:38em}
.note{font-size:.85rem;color:var(--tx-3)}
.eyebrow{font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--tx-3);display:flex;align-items:center;gap:.7rem;margin:0 0 1.4rem}
.eyebrow::after{content:"";flex:1;height:1px;background:var(--line);max-width:6rem}
.eyebrow--plain::after{display:none}

.wrap{width:min(100% - (var(--gut)*2),var(--wrap));margin-inline:auto}
.section{padding-block:var(--sec);border-top:1px solid var(--line);position:relative}
.sec-no{position:absolute;top:1.1rem;right:var(--gut);font-family:var(--mono);
  font-size:.7rem;letter-spacing:.14em;color:var(--tx-4)}
.grid{display:grid;gap:2rem}
.g-side{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.g-2{grid-template-columns:1fr 1fr}
@media(max-width:820px){.g-side,.g-2{grid-template-columns:1fr}}

.btn{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--mono);font-size:.83rem;
  letter-spacing:.02em;text-decoration:none;padding:.9rem 1.3rem;border:1px solid var(--line-2);
  color:var(--tx);transition:border-color .15s,background .15s}
.btn:hover{border-color:var(--tx)}
.btn--primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn--primary:hover{background:var(--ink-2)}
.btn__arrow{color:var(--signal)}
.btn--primary .btn__arrow{color:var(--signal)}
.link-u{color:var(--tx);text-decoration:none;border-bottom:1px solid var(--signal);padding-bottom:.12rem}
.link-u:hover{color:var(--signal-deep)}

/* ---- Nav ---- */
.nav{border-bottom:1px solid var(--line);background:var(--paper)}
.nav__in{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;flex-wrap:wrap;padding:1.05rem 0}
.brand{font-family:var(--serif);font-size:1.08rem;color:var(--tx);text-decoration:none}
.brand__mark{font-family:var(--mono);font-size:.62rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--tx-3);margin-left:.75rem}
.nav__links{display:flex;gap:1.7rem;font-family:var(--mono);font-size:.76rem;letter-spacing:.05em;align-items:baseline}
.nav__links a{text-decoration:none;color:var(--tx-2)}
.nav__links a:hover{color:var(--tx)}
.nav__links .lang{border:1px solid var(--line);padding:.18rem .55rem;color:var(--tx-3)}
@media(max-width:640px){.hide-sm{display:none}}

/* ---- Hero ---- */
.hero{padding:clamp(3.2rem,7vw,5.8rem) 0 clamp(2.6rem,5vw,4.2rem)}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:clamp(2.2rem,5vw,4.5rem);align-items:start}
@media(max-width:820px){.hero__grid{grid-template-columns:1fr}}
.portrait{width:100%;max-width:320px;border:1px solid var(--line-2);filter:grayscale(15%)}
.portrait-note{font-family:var(--mono);font-size:.73rem;line-height:1.95;color:var(--tx-3);margin-top:.95rem}

/* ---- Metrics ---- */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics__in{display:grid;grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.metrics__in{grid-template-columns:repeat(2,1fr)}}
.metric{padding:1.5rem 1.3rem;border-left:1px solid var(--line)}
.metric:first-child{border-left:none;padding-left:0}
@media(max-width:820px){.metric:nth-child(3){border-left:none;padding-left:0}
  .metric:nth-child(n+3){border-top:1px solid var(--line)}}
.metric__k{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--tx-3)}
.metric__v{font-family:var(--serif);font-size:2.05rem;color:var(--tx);margin:.32rem 0 .22rem;
  font-variant-numeric:tabular-nums}
.metric__v small{font-size:1.02rem;color:var(--tx-2)}
.metric__note{font-size:.8rem;line-height:1.5;color:var(--tx-2)}

/* ---- Offer tiles ---- */
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:1.3rem;margin-top:2.6rem}
@media(max-width:820px){.tiles{grid-template-columns:1fr}}
.tile{border:1px solid var(--line);background:var(--paper-2);padding:1.7rem 1.6rem}
.tile__no{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--signal)}
.tile h3{margin:.7rem 0 .55rem}
.tile p{font-size:.94rem;line-height:1.6}

/* ---- Proof cards / Belege ---- */
.proofs{display:grid;grid-template-columns:repeat(2,1fr);gap:1.3rem;margin-top:2.6rem}
@media(max-width:820px){.proofs{grid-template-columns:1fr}}
.proof{border:1px solid var(--line);padding:1.6rem 1.5rem;background:var(--paper)}
.proof__k{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--tx-3);display:block;margin-bottom:.7rem}
.proof p{font-size:.95rem;line-height:1.6;color:var(--tx-2)}
.proof p strong{color:var(--tx)}

.stationen{font-family:var(--mono);font-size:.82rem;line-height:2.15;color:var(--tx-2);white-space:nowrap;overflow-x:auto}
.stationen b{color:var(--tx);font-weight:500}

/* ---- Ticks ---- */
.ticks{list-style:none;margin:0;padding:0}
.ticks li{padding-left:1.6rem;position:relative;margin-bottom:.85rem;font-size:.97rem}
.ticks li::before{content:"—";position:absolute;left:0;color:var(--signal);font-family:var(--mono)}

/* ---- Demo band (dunkel, Brücke zum Maschinenraum) ---- */
.band{background:var(--ink);color:var(--tx-inv2);border-top:1px solid var(--line)}
.band .wrap{padding-block:clamp(3rem,6vw,4.5rem);display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:2.5rem;align-items:center}
@media(max-width:820px){.band .wrap{grid-template-columns:1fr}}
.band h2{color:var(--tx-inv)}
.band .eyebrow{color:var(--tx-inv2)}
.band .eyebrow::after{background:var(--line-inv)}
.band p{color:var(--tx-inv2)}
.band .btn{border-color:rgba(233,231,226,.3);color:var(--tx-inv)}
.band .btn--primary{background:var(--paper);color:var(--ink);border-color:var(--paper)}

/* ---- Kontakt ---- */
.contact-card{border:1px solid var(--line);background:var(--paper-2);padding:1.9rem 1.8rem}
.contact-card .row{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;
  border-bottom:1px solid var(--line);padding:.85rem 0;font-size:.95rem;flex-wrap:wrap}
.contact-card .row:last-child{border-bottom:none}
.contact-card .k{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--tx-3)}
.contact-card a{font-family:var(--mono);font-size:.9rem;color:var(--tx);text-decoration:none;border-bottom:1px solid var(--signal)}

/* ---- Footer ---- */
.footer{border-top:1px solid var(--line);padding:2.2rem 0 2.8rem;font-size:.85rem;color:var(--tx-3)}
.footer .wrap{display:flex;flex-wrap:wrap;gap:1.4rem;justify-content:space-between;align-items:baseline}
.footer a{color:var(--tx-2);text-decoration:none}
.footer a:hover{color:var(--tx)}
.footer .links{display:flex;gap:1.4rem;flex-wrap:wrap}

/* ---- Legal pages (Impressum / Datenschutz) ---- */
.legal{padding-block:clamp(3rem,6vw,5rem)}
.legal .wrap{max-width:760px;margin-inline:auto}
.legal h1{font-size:clamp(1.9rem,3.5vw,2.6rem);margin-bottom:2rem}
.legal h2{font-family:var(--serif);font-weight:400;color:var(--tx);font-size:1.25rem;margin:2.2rem 0 .7rem}
.legal p{font-size:.97rem}
.legal .block{border:1px solid var(--line);background:var(--paper-2);padding:1.4rem 1.5rem;
  font-size:.95rem;line-height:1.9;margin:1.4rem 0}