/* =====================================================================
   Heyd-Tec.Net – Stylesheet
   Gestaltungsidee: Werkstatt & Datenblatt.
   Dunkler Stahl, Kupfer als Akzent (Heatpipes), Monospace für Specs.
   ===================================================================== */

:root {
  --stahl-950: #0E1116;
  --stahl-900: #12151B;
  --stahl-850: #171C24;
  --stahl-800: #1C222C;
  --stahl-700: #262E3A;
  --linie:     #2B3441;
  --text:      #E9EDF2;
  --gedimmt:   #97A2AF;
  --kupfer:       #D08A4E;
  --kupfer-hell:  #E8AC72;
  --kupfer-tief:  #8C5A2E;
  --ok:        #7FCB8F;
  --warnung:   #E0B34E;

  --schrift-display: "Chakra Petch", sans-serif;
  --schrift-text:    "IBM Plex Sans", system-ui, sans-serif;
  --schrift-mono:    "IBM Plex Mono", ui-monospace, monospace;

  --breite: 1180px;
  --radius: 6px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--stahl-900);
  color: var(--text);
  font-family: var(--schrift-text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--kupfer-hell); text-decoration: none; }
a:hover { color: var(--kupfer); }

:focus-visible {
  outline: 2px solid var(--kupfer-hell);
  outline-offset: 2px;
  border-radius: 2px;
}

h1, h2, h3 {
  font-family: var(--schrift-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .5em;
  text-wrap: balance;
}

.skiplink {
  position: absolute; left: -999px; top: 0;
  background: var(--kupfer); color: var(--stahl-950);
  padding: .5rem 1rem; z-index: 100;
}
.skiplink:focus { left: .5rem; top: .5rem; }

/* --------------------------------------------------------------------
   Kopfbereich
   -------------------------------------------------------------------- */
.kopf {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14, 17, 22, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--linie);
}
.kopf-innen {
  max-width: var(--breite); margin: 0 auto;
  padding: .65rem 1.25rem;
  display: flex; align-items: center; gap: 1.5rem;
}
.marke { display: flex; align-items: center; gap: .7rem; }
.marke-logo {
  font-family: var(--schrift-display); font-weight: 700; font-size: 1rem;
  color: var(--stahl-950);
  background: linear-gradient(135deg, var(--kupfer-hell), var(--kupfer));
  width: 40px; height: 40px; display: grid; place-items: center;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.marke-text { display: flex; flex-direction: column; line-height: 1.15; }
.marke-name { font-family: var(--schrift-display); font-weight: 700; font-size: 1.1rem; color: var(--text); }
.marke-claim { font-family: var(--schrift-mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; color: var(--gedimmt); }

.nav { margin-left: auto; display: flex; gap: 1.4rem; align-items: center; }
.nav a {
  font-family: var(--schrift-display); font-weight: 600; font-size: .92rem;
  color: var(--text); letter-spacing: .02em;
  padding: .3rem 0; border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--kupfer-hell); }
.nav a[aria-current="page"] { border-bottom-color: var(--kupfer); color: var(--kupfer-hell); }
.nav-cta {
  border: 1px solid var(--kupfer); border-radius: var(--radius);
  padding: .35rem .9rem !important; color: var(--kupfer-hell) !important;
}
.nav-cta:hover { background: var(--kupfer); color: var(--stahl-950) !important; }
.nav-knopf { display: none; }

@media (max-width: 760px) {
  .nav-knopf {
    display: block; margin-left: auto;
    background: none; border: 1px solid var(--linie); border-radius: var(--radius);
    color: var(--text); font-family: var(--schrift-display); font-size: .9rem;
    padding: .4rem .9rem; cursor: pointer;
  }
  .nav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--stahl-950); border-bottom: 1px solid var(--linie);
    padding: .5rem 1.25rem 1rem;
  }
  .nav.offen { display: flex; }
  .nav a { padding: .7rem 0; border-bottom: 1px solid var(--linie); }
  .nav-cta { margin-top: .75rem; text-align: center; }
}

/* --------------------------------------------------------------------
   Allgemeine Abschnitte
   -------------------------------------------------------------------- */
.abschnitt { max-width: var(--breite); margin: 0 auto; padding: 3.5rem 1.25rem; }
.abschnitt--eng { padding-top: 2rem; }

.augenbraue {
  font-family: var(--schrift-mono); font-size: .72rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--kupfer); margin: 0 0 .6rem;
}
.augenbraue::before { content: "// "; color: var(--kupfer-tief); }

.abschnitt-titel { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.abschnitt-kopf { display: flex; align-items: end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.75rem; }
.abschnitt-kopf .abschnitt-titel { margin-bottom: 0; }

.knopf {
  display: inline-block;
  font-family: var(--schrift-display); font-weight: 600; font-size: .95rem;
  background: var(--kupfer); color: var(--stahl-950);
  border: 1px solid var(--kupfer); border-radius: var(--radius);
  padding: .65rem 1.4rem; cursor: pointer;
}
.knopf:hover { background: var(--kupfer-hell); border-color: var(--kupfer-hell); color: var(--stahl-950); }
.knopf--zweit { background: transparent; color: var(--kupfer-hell); }
.knopf--zweit:hover { background: var(--kupfer); color: var(--stahl-950); }

.tag {
  font-family: var(--schrift-mono); font-size: .68rem; letter-spacing: .06em;
  color: var(--gedimmt);
  border: 1px dashed var(--linie); border-radius: 3px;
  padding: .15rem .5rem; text-transform: uppercase; white-space: nowrap;
}

/* --------------------------------------------------------------------
   Startseite: Hero
   -------------------------------------------------------------------- */
.held {
  border-bottom: 1px solid var(--linie);
  background:
    radial-gradient(ellipse 60% 50% at 85% 10%, rgba(208, 138, 78, .10), transparent 60%),
    var(--stahl-950);
  position: relative;
  overflow: hidden;
}
.held::after { /* Kupfer-"Heatpipe" quer durch den Hero */
  content: "";
  position: absolute; left: 0; right: 0; bottom: 88px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--kupfer-tief) 20%, var(--kupfer) 50%, var(--kupfer-tief) 80%, transparent);
  opacity: .6; pointer-events: none;
}
.held-innen {
  max-width: var(--breite); margin: 0 auto;
  padding: 4.5rem 1.25rem 5.5rem;
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 3rem; align-items: center;
}
.held h1 {
  font-size: clamp(2rem, 5vw, 3.3rem);
  margin-bottom: 1rem;
}
.held h1 em { font-style: normal; color: var(--kupfer-hell); }
.held-text { color: var(--gedimmt); max-width: 34rem; margin-bottom: 1.75rem; }
.held-aktionen { display: flex; gap: .9rem; flex-wrap: wrap; }

/* Service-Tag-Karte im Hero: das Datenblatt als Aushängeschild */
.datentag {
  display: block;
  background: var(--stahl-850);
  border: 1px solid var(--linie);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  font-family: var(--schrift-mono); font-size: .82rem;
  position: relative;
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.datentag::before, .datentag::after,
.eck::before, .eck::after { /* Kupfer-Eckwinkel */
  content: ""; position: absolute; width: 14px; height: 14px;
  border-color: var(--kupfer); border-style: solid; pointer-events: none;
}
.datentag::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.datentag::after  { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.datentag-kopf {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  border-bottom: 1px solid var(--linie); padding-bottom: .7rem; margin-bottom: .7rem;
}
.datentag-name { font-family: var(--schrift-display); font-weight: 700; font-size: 1.05rem; color: var(--text); }
.datentag-zeile {
  display: flex; align-items: baseline; gap: .6rem;
  padding: .32rem 0; color: var(--text);
}
.datentag-zeile dt { color: var(--kupfer); min-width: 5.5ch; flex-shrink: 0; }
.datentag-zeile dt::after { content: ""; }
.datentag-zeile .fuellung { flex: 1; border-bottom: 1px dotted var(--stahl-700); transform: translateY(-4px); }
.datentag-zeile dd { margin: 0; text-align: right; color: var(--gedimmt); max-width: 60%; }
.datentag-fuss { margin-top: .8rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.datentag dl { margin: 0; }

@media (max-width: 900px) {
  .held-innen { grid-template-columns: 1fr; padding-bottom: 4rem; }
  .held::after { bottom: 60px; }
}

/* --------------------------------------------------------------------
   Leistungen
   -------------------------------------------------------------------- */
.leistungen { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.leistung {
  background: var(--stahl-850); border: 1px solid var(--linie); border-radius: var(--radius);
  padding: 1.5rem; position: relative;
}
.leistung h3 { font-size: 1.1rem; margin-top: .4rem; }
.leistung p { color: var(--gedimmt); font-size: .93rem; margin: 0; }
.leistung-kuerzel {
  font-family: var(--schrift-mono); font-size: .7rem; letter-spacing: .14em;
  color: var(--kupfer); text-transform: uppercase;
}
@media (max-width: 900px) { .leistungen { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------
   Produktraster & Karten
   -------------------------------------------------------------------- */
.raster {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 1.25rem;
}
.karte {
  background: var(--stahl-850); border: 1px solid var(--linie); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color .15s ease, transform .15s ease;
}
.karte:hover { border-color: var(--kupfer-tief); transform: translateY(-2px); }
.karte-bild {
  position: relative; aspect-ratio: 1 / 1; background: #fff;
  display: grid; place-items: center; overflow: hidden;
}
.karte-bild img { width: 100%; height: 100%; object-fit: contain; padding: .75rem; }
.karte-band {
  position: absolute; top: .6rem; left: .6rem;
  font-family: var(--schrift-mono); font-size: .65rem; letter-spacing: .08em; text-transform: uppercase;
  background: var(--stahl-950); color: var(--warnung);
  border: 1px solid var(--warnung); border-radius: 3px; padding: .15rem .45rem;
}
.karte-band--angebot { top: auto; bottom: .6rem; color: var(--ok); border-color: var(--ok); }
.karte-inhalt { padding: 1rem 1.1rem 1.1rem; display: flex; flex-direction: column; gap: .55rem; flex: 1; }
.karte-kats {
  font-family: var(--schrift-mono); font-size: .66rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--kupfer); margin: 0;
}
.karte-name { font-size: 1.02rem; margin: 0; }
.karte-name a { color: var(--text); }
.karte-name a:hover { color: var(--kupfer-hell); }
.karte-specs { margin: 0; font-family: var(--schrift-mono); font-size: .74rem; }
.karte-specs > div { display: flex; gap: .5rem; padding: .12rem 0; }
.karte-specs dt { color: var(--gedimmt); min-width: 4ch; }
.karte-specs dd { margin: 0; color: var(--text); flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.karte-fuss {
  margin-top: auto; padding-top: .6rem; border-top: 1px solid var(--linie);
  display: flex; justify-content: space-between; align-items: center; gap: .6rem;
}
.karte-preis { font-family: var(--schrift-display); font-size: .95rem; display: flex; gap: .5rem; align-items: baseline; }
.karte-preis s { color: var(--gedimmt); font-size: .8rem; }
.karte-preis strong { color: var(--kupfer-hell); }
.karte-preis--anfrage { font-family: var(--schrift-mono); font-size: .72rem; color: var(--gedimmt); text-transform: uppercase; letter-spacing: .06em; }

/* --------------------------------------------------------------------
   Filterleiste (systeme.php)
   -------------------------------------------------------------------- */
.filter {
  display: flex; flex-wrap: wrap; gap: .6rem; align-items: center;
  margin-bottom: 1.75rem;
}
.filter-chip {
  font-family: var(--schrift-mono); font-size: .78rem; letter-spacing: .04em;
  background: var(--stahl-850); color: var(--gedimmt);
  border: 1px solid var(--linie); border-radius: 999px;
  padding: .4rem 1rem; cursor: pointer;
}
.filter-chip:hover { border-color: var(--kupfer-tief); color: var(--text); }
.filter-chip[aria-pressed="true"] {
  background: var(--kupfer); border-color: var(--kupfer); color: var(--stahl-950);
}
.filter-suche {
  margin-left: auto;
  font-family: var(--schrift-mono); font-size: .82rem;
  background: var(--stahl-850); color: var(--text);
  border: 1px solid var(--linie); border-radius: var(--radius);
  padding: .5rem .9rem; min-width: 230px;
}
.filter-suche::placeholder { color: var(--gedimmt); }
.filter-suche:focus { border-color: var(--kupfer); outline: none; }
@media (max-width: 700px) {
  .filter-suche { margin-left: 0; width: 100%; order: -1; }
}
.treffer-hinweis { font-family: var(--schrift-mono); font-size: .78rem; color: var(--gedimmt); margin: 0 0 1rem; }
.keine-treffer {
  border: 1px dashed var(--linie); border-radius: var(--radius);
  padding: 2.5rem 1.5rem; text-align: center; color: var(--gedimmt);
}

/* --------------------------------------------------------------------
   Produktdetail
   -------------------------------------------------------------------- */
.brotkrumen {
  font-family: var(--schrift-mono); font-size: .74rem; color: var(--gedimmt);
  margin: 0 0 1.5rem;
}
.brotkrumen a { color: var(--gedimmt); }
.brotkrumen a:hover { color: var(--kupfer-hell); }
.brotkrumen .trenner { color: var(--kupfer-tief); padding: 0 .35rem; }

.detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2.5rem; }
@media (max-width: 860px) { .detail { grid-template-columns: 1fr; } }

.galerie-haupt {
  position: relative; background: #fff; border: 1px solid var(--linie); border-radius: var(--radius);
  aspect-ratio: 1 / 1; display: grid; place-items: center; overflow: hidden; cursor: zoom-in;
  padding: 0; width: 100%;
}
.galerie-haupt img { width: 100%; height: 100%; object-fit: contain; padding: 1.25rem; }
.galerie-haupt.eck::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.galerie-haupt.eck::after  { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.galerie-daumen { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: .5rem; margin-top: .6rem; }
.galerie-daumen button {
  background: #fff; border: 1px solid var(--linie); border-radius: 4px;
  aspect-ratio: 1 / 1; overflow: hidden; cursor: pointer; padding: 0;
}
.galerie-daumen img { width: 100%; height: 100%; object-fit: contain; padding: .3rem; }
.galerie-daumen button[aria-current="true"] { border-color: var(--kupfer); box-shadow: 0 0 0 1px var(--kupfer); }

.detail-kopf { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin-bottom: .5rem; }
.detail h1 { font-size: clamp(1.4rem, 3vw, 2rem); margin: 0; }
.detail-kats { font-family: var(--schrift-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--kupfer); margin: 0 0 .4rem; }
.detail-preis { font-family: var(--schrift-display); font-size: 1.4rem; margin: .75rem 0 .25rem; display: flex; gap: .75rem; align-items: baseline; }
.detail-preis s { color: var(--gedimmt); font-size: 1rem; }
.detail-preis strong { color: var(--kupfer-hell); }
.detail-status { font-family: var(--schrift-mono); font-size: .76rem; }
.detail-status--ok { color: var(--ok); }
.detail-status--aus { color: var(--warnung); }
.ust-hinweis { font-size: .8rem; color: var(--gedimmt); margin: .75rem 0 1.25rem; }

/* Datenblatt auf der Detailseite */
.datenblatt {
  background: var(--stahl-850); border: 1px solid var(--linie); border-radius: var(--radius);
  padding: 1.2rem 1.3rem; font-family: var(--schrift-mono); font-size: .82rem;
  margin: 1rem 0 1.5rem;
}
.datenblatt-titel {
  font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gedimmt);
  border-bottom: 1px solid var(--linie); padding-bottom: .6rem; margin-bottom: .6rem;
  display: flex; justify-content: space-between; gap: 1rem;
}
.datenblatt dl { margin: 0; }
.datenblatt .zeile { display: flex; gap: .8rem; padding: .42rem 0; border-bottom: 1px dotted var(--stahl-700); }
.datenblatt .zeile:last-child { border-bottom: 0; }
.datenblatt dt { color: var(--kupfer); min-width: 9ch; flex-shrink: 0; }
.datenblatt dd { margin: 0; color: var(--text); }

.detail-aktionen { display: flex; gap: .9rem; flex-wrap: wrap; margin-top: .5rem; }

/* Reiter (Beschreibung / Zusätzliche Informationen) */
.reiter { margin-top: 3rem; }
.reiter-leiste { display: flex; gap: .25rem; border-bottom: 1px solid var(--linie); }
.reiter-knopf {
  font-family: var(--schrift-display); font-weight: 600; font-size: .95rem;
  background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--gedimmt); padding: .7rem 1.1rem; cursor: pointer; margin-bottom: -1px;
}
.reiter-knopf:hover { color: var(--text); }
.reiter-knopf[aria-selected="true"] { color: var(--kupfer-hell); border-bottom-color: var(--kupfer); }
.reiter-inhalt { padding: 1.5rem .25rem; }
.reiter-inhalt[hidden] { display: none; }
.beschreibung { max-width: 46rem; color: var(--text); }

.zusatz-tabelle { width: 100%; border-collapse: collapse; font-size: .88rem; }
.zusatz-tabelle th, .zusatz-tabelle td { text-align: left; vertical-align: top; padding: .7rem .9rem; border-bottom: 1px solid var(--linie); }
.zusatz-tabelle th { font-family: var(--schrift-mono); font-weight: 500; font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--kupfer); width: 11rem; white-space: nowrap; }
.zusatz-tabelle td { color: var(--text); }
@media (max-width: 620px) {
  .zusatz-tabelle th, .zusatz-tabelle td { display: block; width: auto; }
  .zusatz-tabelle th { border-bottom: 0; padding-bottom: .1rem; }
}

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(10, 12, 16, .93);
  display: none; align-items: center; justify-content: center; padding: 2rem;
}
.lightbox.offen { display: flex; }
.lightbox img { max-width: min(92vw, 1100px); max-height: 88vh; object-fit: contain; background: #fff; border-radius: 4px; }
.lightbox-schliessen {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--stahl-850); border: 1px solid var(--linie); border-radius: var(--radius);
  color: var(--text); font-family: var(--schrift-mono); font-size: .85rem;
  padding: .45rem .9rem; cursor: pointer;
}
.lightbox-pfeil {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: var(--stahl-850); border: 1px solid var(--linie); border-radius: var(--radius);
  color: var(--text); font-size: 1.3rem; line-height: 1;
  padding: .6rem .85rem; cursor: pointer;
}
.lightbox-pfeil:hover, .lightbox-schliessen:hover { border-color: var(--kupfer); color: var(--kupfer-hell); }
.lightbox-pfeil--zurueck { left: 1rem; }
.lightbox-pfeil--vor { right: 1rem; }

/* --------------------------------------------------------------------
   Kontakt-Band
   -------------------------------------------------------------------- */
.kontakt-band {
  border-top: 1px solid var(--linie);
  background: radial-gradient(ellipse 50% 80% at 50% 100%, rgba(208, 138, 78, .08), transparent 70%), var(--stahl-950);
}
.kontakt-band .abschnitt { text-align: center; }
.kontakt-band p { color: var(--gedimmt); max-width: 34rem; margin: 0 auto 1.5rem; }

/* --------------------------------------------------------------------
   Fußbereich
   -------------------------------------------------------------------- */
.fuss { border-top: 1px solid var(--linie); background: var(--stahl-950); margin-top: 3rem; }
.fuss-innen {
  max-width: var(--breite); margin: 0 auto; padding: 2.5rem 1.25rem;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem;
}
.fuss-marke { font-family: var(--schrift-display); font-weight: 700; font-size: 1.1rem; margin: 0 0 .5rem; }
.fuss-titel { font-family: var(--schrift-mono); font-size: .7rem; letter-spacing: .15em; text-transform: uppercase; color: var(--kupfer); margin: 0 0 .7rem; }
.fuss-text { color: var(--gedimmt); font-size: .9rem; margin: 0; }
.fuss-nav { display: flex; flex-direction: column; gap: .4rem; font-size: .9rem; }
.fuss-nav a { color: var(--gedimmt); }
.fuss-nav a:hover { color: var(--kupfer-hell); }
.fuss-leiste {
  border-top: 1px solid var(--linie);
  font-family: var(--schrift-mono); font-size: .72rem; color: var(--gedimmt);
}
.fuss-leiste { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; max-width: var(--breite); margin: 0 auto; padding: 1rem 1.25rem; }
.fuss-leiste p { margin: 0; }
@media (max-width: 760px) { .fuss-innen { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------
   Rechtstexte (Impressum, Datenschutz)
   -------------------------------------------------------------------- */
.rechtstext { max-width: 46rem; }
.rechtstext h2 { font-size: 1.2rem; margin-top: 2rem; }
.rechtstext p, .rechtstext li { color: var(--gedimmt); }
.platzhalter { color: var(--warnung); font-family: var(--schrift-mono); font-size: .9em; }