/* =========================================================
   ZVENNE — Holz · Innenausbau · Hotelausbau
   Konzept: "AUFMASS" — Seite als technische Zeichnung / Montageplan.
   Schriftfeld, Maßlinien, Schnittmarken, Positions-Indizes.
   Farben: Anthrazit #262422 · Nussbraun #8a5a36 · Leinen #f3efe9
   Schrift: Bricolage Grotesque (Display) · Hanken Grotesk (Text) · Spline Sans Mono (Daten)
   ========================================================= */

:root{
  --ink:#262422; --ink-2:#1b1917; --soft:#5a544c;
  --wood:#8a5a36; --wood-2:#a06a3f;
  --linen:#f3efe9; --paper:#f4f1ea; --paper-2:#efe9df;
  --hair:#2624221f;        /* haarfeine Linie auf hell  */
  --hair-d:#f3efe926;      /* haarfeine Linie auf dunkel */
  --maxw:1280px;
  --gut:clamp(18px,4.5vw,56px);
  --ease:cubic-bezier(.22,.61,.21,1);
  --disp:"Bricolage Grotesque","Arial Narrow",sans-serif;
  --text:"Hanken Grotesk",system-ui,sans-serif;
  --mono:"Spline Sans Mono",ui-monospace,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--text);font-size:17px;line-height:1.62;
  -webkit-font-smoothing:antialiased;
  background-image:linear-gradient(90deg,var(--hair) 1px,transparent 1px);
  background-size:100% 100%;            /* Grid-Hauch nur am Rand, siehe .ruleframe */
  background-attachment:fixed;
  background-repeat:no-repeat;
  background-position:0 0;
  /* Grid deaktiviert auf body, echtes Raster kommt aus .frame */
  background-image:none;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

/* ---- Mono-Datenlabel (Maßangaben, Positionen, Schriftfeld) ---- */
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--soft)}
.tick{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--wood)}

h1,h2,h3{font-family:var(--disp);font-weight:800;line-height:1;letter-spacing:-.02em;margin:0}

/* ---- Rahmen wie ein Zeichnungsblatt: Schnittmarken in den Ecken ---- */
.crop{position:fixed;width:18px;height:18px;z-index:60;pointer-events:none;opacity:.55}
.crop::before,.crop::after{content:"";position:absolute;background:var(--ink)}
.crop::before{width:18px;height:1px;top:0;left:0}
.crop::after{height:18px;width:1px;top:0;left:0}
.crop.tl{top:12px;left:12px}
.crop.tr{top:12px;right:12px;transform:scaleX(-1)}
.crop.bl{bottom:12px;left:12px;transform:scaleY(-1)}
.crop.br{bottom:12px;right:12px;transform:scale(-1,-1)}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}

/* full-width Maßlinie mit Endmarken */
.measure{display:flex;align-items:center;gap:14px;margin:0;padding:0}
.measure .ln{flex:1;height:1px;background:var(--ink);opacity:.28;position:relative}
.measure .ln::before,.measure .ln::after{content:"";position:absolute;top:-4px;width:1px;height:9px;background:var(--ink);opacity:.5}
.measure .ln::before{left:0}.measure .ln::after{right:0}

/* ---- Sektions-Index: §01 — TITEL ---------------------- */
.section{padding-block:clamp(56px,8vw,116px);position:relative;border-top:1px solid var(--hair)}
.sec-head{display:grid;grid-template-columns:auto 1fr;gap:18px 26px;align-items:start;margin-bottom:clamp(34px,5vw,64px)}
.sec-no{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--wood);padding-top:10px}
.sec-title h2{font-size:clamp(30px,5.2vw,62px)}
.sec-title p{max-width:60ch;color:var(--soft);margin:16px 0 0;font-size:18px}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 86%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--ink)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:22px;height:74px}
.brand svg{height:42px;width:auto}
.nav-links{display:flex;gap:30px;list-style:none;margin:0;padding:0}
.nav-links a{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--soft);display:inline-flex;gap:7px;align-items:baseline;transition:color .2s}
.nav-links a .n{color:var(--wood)}
.nav-links a:hover{color:var(--ink)}
.nav-cta{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--ink);padding:11px 18px;display:inline-flex;align-items:center;gap:9px;transition:.25s var(--ease)}
.nav-cta:hover{background:var(--ink);color:var(--linen)}
.nav-toggle{display:none;background:none;border:1px solid var(--ink);padding:9px 10px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0}

/* =========================================================
   HERO  — große Type mit Maß-Annotationen
   ========================================================= */
.hero{position:relative;overflow:hidden}
.hero .wrap{padding-block:clamp(40px,7vw,90px) clamp(40px,6vw,76px)}
.hero-top{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:30px}
.hero-top .mono span{color:var(--ink)}
.hero-grid{display:grid;grid-template-columns:1.45fr .55fr;gap:clamp(26px,4vw,56px);align-items:end}
.hero h1{font-size:clamp(46px,12.5vw,168px);letter-spacing:-.04em;line-height:.86}
.hero h1 .row{display:block;position:relative}
.hero h1 .wood{color:var(--wood)}
.hero h1 .outline{color:transparent;-webkit-text-stroke:1.4px var(--ink)}
.hero-sub{margin-top:30px;max-width:52ch;color:var(--soft);font-size:clamp(16px,1.7vw,20px)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;display:inline-flex;align-items:center;gap:10px;padding:15px 24px;border:1px solid var(--ink);transition:.25s var(--ease)}
.btn .ar{transition:transform .25s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}
.btn-solid{background:var(--ink);color:var(--linen)}
.btn-solid:hover{background:var(--wood);border-color:var(--wood)}
.btn-line:hover{background:var(--ink);color:var(--linen)}

/* rechte Datenspalte: Leistungs-Spezifikation wie Stückliste */
.spec{border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:13px 2px;border-bottom:1px solid var(--hair);align-items:baseline}
.spec-row:last-child{border-bottom:0}
.spec-row .k{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--wood)}
.spec-row .v{font-family:var(--disp);font-weight:700;font-size:18px}
.spec-cap{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--soft);margin:0 0 10px}

/* Hero-Bild mit Schnittmarken-Rahmen + Bildunterschrift */
.plate{position:relative;margin-top:46px}
.plate img{width:100%;aspect-ratio:16/7;object-fit:cover;filter:grayscale(.15) contrast(1.02)}
.plate .corner{position:absolute;width:14px;height:14px;border:1px solid var(--ink)}
.plate .corner.a{top:-1px;left:-1px;border-right:0;border-bottom:0}
.plate .corner.b{top:-1px;right:-1px;border-left:0;border-bottom:0}
.plate .corner.c{bottom:-1px;left:-1px;border-right:0;border-top:0}
.plate .corner.d{bottom:-1px;right:-1px;border-left:0;border-top:0}
.plate figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--soft);margin-top:10px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* Laufband / Leistungsschlagworte */
.tape{border-block:1px solid var(--ink);overflow:hidden;background:var(--ink);color:var(--linen)}
.tape ul{display:flex;gap:0;list-style:none;margin:0;padding:0;animation:slide 32s linear infinite;white-space:nowrap}
.tape li{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;padding:13px 26px;display:flex;align-items:center;gap:26px}
.tape li::after{content:"";width:6px;height:6px;background:var(--wood);transform:rotate(45deg)}
@keyframes slide{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.tape ul{animation:none}}

/* =========================================================
   LEISTUNGEN — als nummerierte Index-Tabelle (editorial)
   ========================================================= */
.index{border-top:1px solid var(--ink)}
.irow{display:grid;grid-template-columns:64px 1.1fr 1.6fr auto;gap:18px;align-items:center;
  padding:clamp(20px,2.6vw,30px) 4px;border-bottom:1px solid var(--hair);position:relative;transition:padding .3s var(--ease)}
.irow::before{content:"";position:absolute;left:0;bottom:-1px;height:1px;width:0;background:var(--wood);transition:width .45s var(--ease)}
.irow:hover::before{width:100%}
.irow:hover{padding-left:14px}
.irow .no{font-family:var(--mono);font-size:13px;color:var(--wood)}
.irow h3{font-size:clamp(22px,3vw,33px);letter-spacing:-.02em}
.irow .desc{color:var(--soft);font-size:15.5px}
.irow .go{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);white-space:nowrap;opacity:.5;transition:opacity .25s}
.irow:hover .go{opacity:1;color:var(--wood)}

/* =========================================================
   ARBEITSWEISE — dunkles "Schriftfeld" mit Notizen
   ========================================================= */
.dark{background:var(--ink);color:var(--linen);border-top:1px solid var(--ink)}
.dark .sec-title h2{color:var(--linen)}
.dark .sec-title p{color:#c2bbb0}
.dark .sec-no{color:var(--wood-2)}
.dark .measure .ln{background:var(--linen)}
.dark .measure .ln::before,.dark .measure .ln::after{background:var(--linen)}
.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--hair-d)}
.note-cell{padding:clamp(24px,3vw,38px);border-right:1px solid var(--hair-d)}
.note-cell:last-child{border-right:0}
.note-cell .tick{display:block;margin-bottom:18px}
.note-cell h3{font-size:clamp(20px,2.4vw,27px);color:var(--linen);margin-bottom:12px}
.note-cell p{color:#b3aaa0;font-size:15.5px;margin:0}
.claim{font-family:var(--disp);font-weight:800;font-size:clamp(24px,3.4vw,42px);line-height:1.05;letter-spacing:-.02em;max-width:24ch;margin:0 0 clamp(30px,4vw,48px)}
.claim em{font-style:normal;color:var(--wood-2)}

/* =========================================================
   REFERENZEN — Tafeln mit techn. Bildunterschrift
   ========================================================= */
.plates{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(14px,2vw,22px)}
.fig{grid-column:span 2;position:relative}
.fig.big{grid-column:span 4}
.fig figure{margin:0;position:relative;overflow:hidden;border:1px solid var(--ink)}
.fig img{width:100%;aspect-ratio:3/2;object-fit:cover;filter:grayscale(.12) contrast(1.02);transition:transform .7s var(--ease),filter .5s}
.fig.big img{aspect-ratio:16/9}
.fig:hover img{transform:scale(1.04);filter:grayscale(0) contrast(1.05)}
.fig figcaption{display:flex;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--soft);margin-top:9px}
.fig figcaption b{color:var(--ink);font-weight:600}

/* =========================================================
   BETRIEB — Split mit Spezifikations-Checkliste
   ========================================================= */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,5vw,70px);align-items:center}
.split .media{position:relative;border:1px solid var(--ink)}
.split .media img{width:100%;aspect-ratio:4/5;object-fit:cover;filter:grayscale(.12)}
.checklist{list-style:none;margin:22px 0 0;padding:0;border-top:1px solid var(--ink)}
.checklist li{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:15px 2px;border-bottom:1px solid var(--hair)}
.checklist .mk{font-family:var(--mono);font-size:11px;color:var(--wood);padding-top:3px}
.checklist b{font-weight:700}

/* =========================================================
   KONTAKT — als Formblatt
   ========================================================= */
.kontakt{background:var(--paper-2)}
.k-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,5vw,64px)}
.k-info .row{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;padding:16px 0;border-top:1px solid var(--hair)}
.k-info .row .mk{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--wood)}
.k-info .row a,.k-info .row span{font-family:var(--disp);font-weight:700;font-size:clamp(17px,2vw,22px)}
.k-info .row .pl{font-family:var(--text);font-weight:500;font-size:13px;color:var(--soft)}
form{border:1px solid var(--ink);background:var(--paper);padding:clamp(22px,3vw,34px)}
.f-head{display:flex;justify-content:space-between;border-bottom:1px solid var(--ink);padding-bottom:12px;margin-bottom:20px}
.field{display:grid;gap:7px;margin-bottom:16px}
label{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--soft)}
input,textarea{font-family:var(--text);font-size:16px;color:var(--ink);background:transparent;border:0;border-bottom:1px solid var(--ink);padding:9px 2px;transition:border-color .2s}
input:focus,textarea:focus{outline:none;border-color:var(--wood)}
textarea{resize:vertical}
.btn-block{width:100%;justify-content:center;background:var(--ink);color:var(--linen);border-color:var(--ink);cursor:pointer}
.btn-block:hover{background:var(--wood);border-color:var(--wood)}
.note-sm{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--soft);margin-top:14px;line-height:1.7}

/* =========================================================
   FOOTER — echtes Schriftfeld (Titelblock)
   ========================================================= */
.titleblock{background:var(--ink);color:var(--linen);border-top:1px solid var(--ink)}
.tb-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;border:1px solid var(--hair-d);border-bottom:0}
.tb-cell{padding:22px clamp(16px,2vw,26px);border-right:1px solid var(--hair-d);border-bottom:1px solid var(--hair-d)}
.tb-cell:nth-child(4n){border-right:0}
.tb-cell .lab{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#8d857a;display:block;margin-bottom:9px}
.tb-cell a,.tb-cell span,.tb-cell p{font-family:var(--text);font-size:15px}
.tb-cell a{color:#d8d2c8}.tb-cell a:hover{color:var(--wood-2)}
.tb-brand svg{height:40px;margin-bottom:12px}
.tb-foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:16px 2px;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:#8d857a}

/* ---- Reveal ---- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr}
  .spec{margin-top:8px}
  .split{grid-template-columns:1fr}
  .k-grid{grid-template-columns:1fr}
  .notes{grid-template-columns:1fr}
  .note-cell{border-right:0;border-bottom:1px solid var(--hair-d)}
  .note-cell:last-child{border-bottom:0}
  .tb-grid{grid-template-columns:1fr 1fr}
  .tb-cell:nth-child(4n){border-right:1px solid var(--hair-d)}
  .tb-cell:nth-child(2n){border-right:0}
}
@media (max-width:720px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .nav.open .nav-links{display:flex;flex-direction:column;gap:0;position:absolute;top:74px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--ink);padding:6px var(--gut) 16px}
  .nav.open .nav-links a{padding:14px 0;border-bottom:1px solid var(--hair)}
  .irow{grid-template-columns:40px 1fr;gap:8px 14px}
  .irow .desc{grid-column:2}
  .irow .go{display:none}
  .plates{grid-template-columns:1fr 1fr}
  .fig,.fig.big{grid-column:span 2}
  .crop{display:none}
}
@media (max-width:480px){
  .plates{grid-template-columns:1fr}
  .fig,.fig.big{grid-column:span 1}
  .tb-grid{grid-template-columns:1fr}
  .tb-cell{border-right:0!important}
  .hero h1 .outline{-webkit-text-stroke:1px var(--ink)}
}