/* ==========================================================================
   DLM — Deutsche Lautsprecher Manufaktur
   Design: „Maßarbeit" — Porzellanweiß, Anthrazit, brüniertes Kupfer.
   Technische Daten in Mono-Schrift (Messprotokoll-Ästhetik).
   ========================================================================== */

/* ---------- Schriften (selbst gehostet, DSGVO-konform) ------------------- */
@font-face {
  font-family: 'Hanken Grotesk';
  src: url('../fonts/hanken-grotesk-var.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('../fonts/ibm-plex-mono-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('../fonts/ibm-plex-mono-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* ---------- Design-Token -------------------------------------------------- */
:root {
  /* Farben */
  --porzellan:  #FAFAF9;   /* Hintergrund */
  --anthrazit:  #17191B;   /* Text, Primär-Buttons */
  --graphit:    #5A5F63;   /* Nebentexte */
  --kupfer:     #96522B;   /* Akzent: Schwingspulen-Kupfer */
  --kupfer-hell:#B06A3F;   /* Akzent hover */
  --hairline:   #E4E2DD;   /* Linien */
  --kammer:     #101214;   /* dunkle Sektion */
  --kammer-text:#C9CCCE;

  /* Typografie */
  --font-sans: 'Hanken Grotesk', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;

  /* Layout */
  --max-w: 1200px;
  --pad-x: clamp(20px, 5vw, 48px);
  --sektion: clamp(72px, 12vw, 140px);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Basis ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--porzellan);
  color: var(--anthrazit);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; }

::selection { background: var(--kupfer); color: #fff; }

:focus-visible {
  outline: 2px solid var(--kupfer);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.sektion { padding-top: var(--sektion); padding-bottom: var(--sektion); }

/* ---------- Typografie ----------------------------------------------------- */
h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.12;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }

p { margin: 0 0 1.2em; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  color: var(--graphit);
  font-weight: 400;
  max-width: 34em;
}

.text-neben { color: var(--graphit); }

/* Eyebrow: Mono-Label mit Kupfer-Messmarke */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--graphit);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: var(--kupfer);
  flex: none;
}

/* Messmarken-Trenner (Kalibrier-Ticks) */
.ticks {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  height: 12px;
  margin: 0 0 28px;
}
.ticks span { width: 1px; height: 6px; background: var(--hairline); }
.ticks span:nth-child(5n+1) { height: 12px; background: var(--kupfer); }

/* ---------- Buttons --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
              color 0.3s var(--ease), transform 0.3s var(--ease);
}
.btn:hover { transform: translateY(-1px); }

.btn-primaer { background: var(--anthrazit); color: #fff; }
.btn-primaer:hover { background: var(--kupfer); }

.btn-ghost { border-color: var(--anthrazit); color: var(--anthrazit); background: transparent; }
.btn-ghost:hover { border-color: var(--kupfer); color: var(--kupfer); }

.btn-hell { background: #fff; color: var(--anthrazit); }
.btn-hell:hover { background: var(--kupfer); color: #fff; }

/* Pfeil im Button */
.btn .pfeil { transition: transform 0.3s var(--ease); }
.btn:hover .pfeil { transform: translateX(4px); }

/* ---------- Header ---------------------------------------------------------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s;
}
.header.gescrollt { border-bottom-color: var(--hairline); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo strong {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
/* Logo-Grafik: multiply blendet den weißen Bildhintergrund
   auf hellem Seitenhintergrund unsichtbar.
   Höhe an die frühere „DLM"-Textgröße angepasst (kompakt). */
.logo-bild {
  height: 20px;
  width: auto;
  display: block;
  mix-blend-mode: multiply;
}
.logo span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphit);
}
@media (max-width: 640px) { .logo span { display: none; } }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--graphit);
  transition: color 0.25s;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--anthrazit); }
.nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-color: var(--kupfer); }

.nav .nav-cta {
  color: #fff;
  background: var(--anthrazit);
  padding: 10px 20px;
  border-radius: 3px;
  transition: background 0.3s;
}
.nav .nav-cta:hover { background: var(--kupfer); color: #fff; }

/* Burger (Mobil) */
.burger {
  display: none;
  background: none;
  border: 0;
  padding: 10px;
  cursor: pointer;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--anthrazit);
  margin: 5px 0;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

@media (max-width: 860px) {
  .burger { display: block; }
  .nav {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--porzellan);
    border-bottom: 1px solid var(--hairline);
    padding: 12px var(--pad-x) 24px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s var(--ease), opacity 0.3s, visibility 0.3s;
  }
  .nav.offen { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav a { padding: 12px 0; font-size: 1.05rem; width: 100%; }
  .nav .nav-cta { margin-top: 10px; text-align: center; }
  body.nav-offen .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-offen .burger span:nth-child(2) { opacity: 0; }
  body.nav-offen .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Hero ------------------------------------------------------------ */
.hero {
  position: relative;
  padding-top: calc(72px + clamp(60px, 10vw, 120px));
  padding-bottom: clamp(40px, 7vw, 90px);
  overflow: hidden;
}

/* Konzentrische Membran-Hairlines (Signatur) */
.hero-membran {
  position: absolute;
  top: 50%;
  right: -12%;
  width: min(62vw, 820px);
  height: auto;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner { position: relative; z-index: 1; max-width: 640px; }

.hero .aktionen { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 36px; }

.hero-bild {
  margin-top: clamp(48px, 8vw, 90px);
  border-radius: 4px;
  overflow: hidden;
}
.hero-bild img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }

/* Hero-Bühne mit freigestelltem Produkt (Detailaufnahme) */
.hero-buehne {
  margin-top: clamp(40px, 7vw, 84px);
  border-radius: 6px;
  border: 1px solid var(--hairline);
  background: radial-gradient(ellipse at 50% 42%, #ffffff 0%, #f1f0ec 55%, #e7e5df 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: clamp(20px, 4vw, 44px);
  overflow: hidden;
}
.hero-buehne img {
  width: auto;
  max-width: 100%;
  max-height: clamp(280px, 42vw, 460px);
  filter: drop-shadow(0 26px 34px rgba(20, 22, 24, 0.22));
}

/* ---------- Produkt-Karten ---------------------------------------------------- */
.karten {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 36px);
}
@media (max-width: 960px) { .karten { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .karten { grid-template-columns: 1fr; } }

.karte {
  text-decoration: none;
  display: block;
  group: none;
}
.karte .bild {
  overflow: hidden;
  border-radius: 4px;
  background: #EFEFED;
}
.karte .bild img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.karte:hover .bild img { transform: scale(1.035); }

.karte .kennung {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--kupfer);
  margin: 18px 0 4px;
}
.karte h3 { margin-bottom: 2px; }
.karte .claim { color: var(--graphit); font-size: 0.95rem; }
.karte .mehr {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 2px;
  transition: border-color 0.3s;
}
.karte:hover .mehr { border-color: var(--kupfer); color: var(--kupfer); }

/* Kategorie-Kacheln (Startseite) */
.kategorien {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(20px, 3vw, 36px);
}
@media (max-width: 760px) { .kategorien { grid-template-columns: 1fr; } }

/* ---------- Hinweis-Band (ohne Gehäuse) -------------------------------------- */
.hinweis {
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--kupfer);
  border-radius: 3px;
  padding: 18px 22px;
  font-size: 0.95rem;
  color: var(--graphit);
  max-width: 720px;
}

/* ---------- Dunkle Sektion („Klangkammer") ------------------------------------ */
.kammer {
  background: var(--kammer);
  color: var(--kammer-text);
}
.kammer h2 { color: #fff; }
.kammer .eyebrow { color: #8A9095; }

.werte {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(36px, 5vw, 64px);
}
@media (max-width: 760px) { .werte { grid-template-columns: 1fr; } }

.wert .zahl {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: #fff;
  letter-spacing: -0.02em;
}
.wert .zahl em { font-style: normal; color: var(--kupfer-hell); }
.wert .beschriftung {
  margin-top: 8px;
  font-size: 0.95rem;
  color: #8A9095;
}

/* ---------- Zwei-Spalten-Layout (Manufaktur-Teaser etc.) ---------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: center;
}
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.split .bild { border-radius: 4px; overflow: hidden; }

/* ---------- Produkt-Detailseite ------------------------------------------------ */
.produkt-kopf {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 5vw, 80px);
  align-items: start;
}
@media (max-width: 860px) { .produkt-kopf { grid-template-columns: 1fr; } }

.produkt-kopf .bild {
  border-radius: 4px;
  overflow: hidden;
  position: sticky;
  top: 96px;
}
@media (max-width: 860px) { .produkt-kopf .bild { position: static; } }

.zurueck {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--graphit);
  display: inline-flex;
  gap: 8px;
  margin-bottom: 28px;
  transition: color 0.25s;
}
.zurueck:hover { color: var(--kupfer); }

/* Datenblatt-Tabelle (Signatur-Element) */
.datenblatt { margin-top: var(--sektion); }
.datenblatt-kopf {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.datenblatt-nr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphit);
}

.spec-tabelle {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}
.spec-tabelle tr { border-bottom: 1px solid var(--hairline); }
.spec-tabelle tr:first-child { border-top: 2px solid var(--anthrazit); }

/* Aufklappbare Bereiche auf der Produktseite (Lieferumfang, Technische Daten …) */
.akkordeon-liste { border-top: 2px solid var(--anthrazit); }

.akkordeon { border-bottom: 1px solid var(--hairline); }

.akkordeon summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: color 0.25s;
}
.akkordeon summary::-webkit-details-marker { display: none; }
.akkordeon summary:hover { color: var(--kupfer); }

.akk-zeichen { position: relative; width: 14px; height: 14px; flex: none; }
.akk-zeichen::before, .akk-zeichen::after {
  content: '';
  position: absolute;
  background: var(--kupfer);
  transition: transform 0.3s var(--ease);
}
.akk-zeichen::before { left: 0; top: 6px; width: 14px; height: 2px; }
.akk-zeichen::after  { left: 6px; top: 0; width: 2px; height: 14px; }
.akkordeon[open] .akk-zeichen::after { transform: scaleY(0); }

.akk-inhalt { padding: 0 4px 22px; }
.akk-inhalt .spec-tabelle tr:first-child { border-top: none; }
.akk-inhalt .spec-tabelle th, .akk-inhalt .spec-tabelle td { padding: 11px 0; }
.spec-tabelle th, .spec-tabelle td { padding: 13px 4px; vertical-align: top; }
.spec-tabelle th {
  text-align: left;
  font-weight: 400;
  color: var(--graphit);
  width: 55%;
}
.spec-tabelle td { text-align: right; font-weight: 500; color: var(--anthrazit); }
@media (max-width: 560px) {
  .spec-tabelle { font-size: 0.8rem; }
  .spec-tabelle th { width: 50%; }
}

/* ---------- Formular ------------------------------------------------------------ */
.formular { max-width: 680px; }

.feld { margin-bottom: 24px; }
.feld-reihe {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 560px) { .feld-reihe { grid-template-columns: 1fr; } }

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}
label .pflicht { color: var(--kupfer); }

input[type="text"], input[type="email"], input[type="number"], select, textarea {
  width: 100%;
  padding: 13px 15px;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--anthrazit);
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  transition: border-color 0.25s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--kupfer);
}
textarea { min-height: 150px; resize: vertical; }

.checkbox-feld {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.88rem;
  color: var(--graphit);
}
.checkbox-feld input { margin-top: 4px; accent-color: var(--kupfer); }
.checkbox-feld a { color: var(--anthrazit); }

/* Produkt-Zeilen im Anfrageformular: Auswahl + Stückzahl + Entfernen */
.produkt-zeile {
  display: grid;
  grid-template-columns: 1fr 92px 38px;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}
.zeile-entfernen {
  width: 38px;
  height: 46px;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  background: #fff;
  color: var(--graphit);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s;
}
.zeile-entfernen:hover { color: var(--kupfer); border-color: var(--kupfer); }

.btn-plus {
  display: inline-block;
  margin-top: 4px;
  padding: 11px 18px;
  background: none;
  border: 1px dashed #C9C6BF;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--anthrazit);
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s;
}
.btn-plus:hover { color: var(--kupfer); border-color: var(--kupfer); }

/* Honeypot: für Menschen unsichtbar */
.hp-feld {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form-meldung {
  padding: 16px 20px;
  border-radius: 3px;
  margin-bottom: 32px;
  font-size: 0.95rem;
  display: none;
}
.form-meldung.sichtbar { display: block; }
.form-meldung.erfolg { background: #EDF5EE; border: 1px solid #BFDCC4; color: #2C5535; }
.form-meldung.fehler { background: #F9EEEA; border: 1px solid #E5C4B5; color: #7C3A1D; }

/* ---------- CTA-Band -------------------------------------------------------------- */
.cta-band { text-align: center; }
.cta-band .lead { margin-left: auto; margin-right: auto; }
.cta-band .aktionen {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* ---------- Footer ------------------------------------------------------------------ */
.footer {
  border-top: 1px solid var(--hairline);
  padding: clamp(48px, 7vw, 80px) 0 40px;
  font-size: 0.92rem;
  color: var(--graphit);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: clamp(28px, 4vw, 56px);
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

.footer h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--anthrazit);
  margin: 0 0 16px;
}
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 10px; }
.footer a { text-decoration: none; transition: color 0.25s; }
.footer a:hover { color: var(--kupfer); }

.footer .marke strong { color: var(--anthrazit); font-size: 1.05rem; letter-spacing: 0.04em; }
.footer .marke p { margin-top: 12px; max-width: 30em; }

/* Sprach-Umschalter */
.sprache {
  display: inline-flex;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}
.sprache a, .sprache span {
  padding: 8px 16px;
  text-decoration: none;
}
.sprache span { background: var(--anthrazit); color: #fff; }
.sprache a:hover { color: var(--kupfer); }

.footer-unten {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.82rem;
}
.footer-unten a { text-decoration: none; margin-left: 20px; }
.footer-unten a:first-child { margin-left: 0; }

/* ---------- Rechtstexte -------------------------------------------------------------- */
.rechtstext { max-width: 760px; }
.rechtstext h2 { font-size: 1.25rem; margin-top: 2.2em; }
.rechtstext h1 + p { color: var(--graphit); }

/* ---------- Scroll-Reveal-Animationen ------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--verzoegerung, 0s);
}
.reveal.sichtbar { opacity: 1; transform: none; }

/* Hero-Ladesequenz */
.laden .reveal-start {
  opacity: 0;
  transform: translateY(22px);
}
.reveal-start {
  opacity: 1;
  transform: none;
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.reveal-start:nth-child(1) { transition-delay: 0.05s; }
.reveal-start:nth-child(2) { transition-delay: 0.15s; }
.reveal-start:nth-child(3) { transition-delay: 0.25s; }
.reveal-start:nth-child(4) { transition-delay: 0.35s; }

/* Reduzierte Bewegung respektieren */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal-start, .laden .reveal-start {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .karte .bild img, .btn, .btn .pfeil { transition: none !important; }
}

/* ---------- Kleinkram ------------------------------------------------------------------ */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--anthrazit);
  color: #fff;
  padding: 12px 20px;
  z-index: 200;
}
.skip-link:focus { left: 0; }

noscript .hinweis { margin: 20px auto; }