/* ==========================================================================
   Konstruktionsfabrik — Landingpage „Montagevorrichtungen aus dem 3D-Druck"
   Tokens aus dem Design-Handoff (README.md). Akzent: ROT #EF4444
   (Alternative aus dem Styleguide: Blau #248cc8 — nur diese Variable tauschen).
   ========================================================================== */

:root {
  /* Farben (Handoff-Tokens) */
  --color-header-bg:    #fcfcfc;
  --color-nav-bg:       #343538;   /* dunkle Navi + dunkle Sektionen */
  --color-body-bg:      #2f3033;   /* Hero, CTA */
  --color-footer-bg:    #2a2b2e;
  --color-nav-text:     #e2e2e2;
  --color-text:         #333333;
  --color-heading:      #444444;
  --color-accent:       #EF4444;   /* final: Rot (Auftraggeber-Entscheid 2026-07) */
  --color-accent-hover: color-mix(in srgb, var(--color-accent) 82%, #000);
  --color-muted:        #666666;
  --color-muted-2:      #808080;
  --color-border:       #e2e2e2;
  --color-dark-muted:   #b9bbbf;   /* Fließtext auf dunklem Grund */
  --color-dark-muted-2: #9fa1a6;

  /* Platzhalter-Markierung (vor Livegang auf transparent setzen) */
  --ph-bg:      #f3e9cf;
  --ph-bg-dark: rgba(255, 255, 255, 0.1);
  --ph-border:  #c9a24a;

  /* Typografie */
  --font-base: "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;

  /* Layout */
  --content-width: 1215px;
  --pad-x: clamp(20px, 4vw, 35px);
  --radius-s: 4px;   /* Buttons, Chips */
  --radius-m: 6px;   /* Cards */
  --radius-l: 8px;   /* Hero-Foto */
}

/* --- Basis ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-body-bg);
  color: var(--color-text);
  font-family: var(--font-base);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }
::selection { background: color-mix(in srgb, var(--color-accent) 25%, transparent); }
a:focus-visible, summary:focus-visible, button:focus-visible,
input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
img { max-width: 100%; display: block; }
h1, h2, h3 { margin: 0; }

/* Platzhalter-Markierung */
.ph {
  background: var(--ph-bg);
  border-bottom: 1px dashed var(--ph-border);
  padding: 0 3px;
  border-radius: 2px;
}
.ph--dark { background: var(--ph-bg-dark); color: #e2e2e2; }

/* --- Layout ---------------------------------------------------------------- */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-inline: var(--pad-x);
}
.container--faq { max-width: 900px; }
.container--cta { max-width: 820px; }
.container--legal { max-width: 820px; }

/* --- Rechtstexte (Impressum / Datenschutz) --------------------------------- */
.legal-page { padding-block: clamp(40px, 6vw, 64px) clamp(52px, 7vw, 84px); }
.legal h1 { font-size: clamp(28px, 4vw, 38px); line-height: 1.2; font-weight: 600; color: var(--color-heading); margin: 10px 0 24px; letter-spacing: -0.3px; }
.legal h2 { font-size: 19px; line-height: 1.3; font-weight: 700; color: var(--color-heading); margin: 34px 0 10px; }
.legal p { font-size: 15px; line-height: 1.75; color: var(--color-muted); margin: 0 0 14px; }
.legal ul { margin: 0 0 14px; padding-left: 22px; }
.legal li { font-size: 15px; line-height: 1.75; color: var(--color-muted); margin-bottom: 6px; }
.legal strong { color: var(--color-heading); }
.legal a { color: var(--color-accent); }
.legal a:hover { color: var(--color-accent-hover); }
.legal-updated { font-size: 13px; color: var(--color-muted-2); margin-top: 32px; }

.section { padding-block: clamp(48px, 7vw, 78px) clamp(52px, 7vw, 84px); }
.section--gray    { background: #f5f5f5; }
.section--light   { background: #fcfcfc; }
.section--dark    { background: var(--color-nav-bg); }
.section--darkest { background: var(--color-body-bg); }
.section--hairline-top      { border-top: 1px solid var(--color-border); }
.section--hairline-top-dark { border-top: 1px solid rgba(255, 255, 255, 0.08); }

.section-head { display: flex; flex-direction: column; gap: 12px; max-width: 760px; margin-bottom: 40px; }
.kicker {
  font-size: 12px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--color-accent);
}
.kicker--hero    { color: var(--color-dark-muted-2); }
.kicker--on-dark { color: color-mix(in srgb, var(--color-accent) 60%, #fff); }
.section-title {
  font-size: clamp(25px, 3.5vw, 32px);
  line-height: 1.25; font-weight: 600;
  color: var(--color-heading); letter-spacing: -0.3px;
}
.section-title--dark { color: #ffffff; }
.section-sub { margin: 0; font-size: 15px; line-height: 1.7; color: var(--color-muted); }
.section-sub--dark { color: var(--color-dark-muted); }

/* --- Buttons ---------------------------------------------------------------- */
.btn {
  display: inline-block;
  font-family: inherit; font-weight: 700; font-size: 13px;
  padding: 10px 18px; border-radius: var(--radius-s);
  border: 1px solid transparent; cursor: pointer;
}
.btn--primary { background: var(--color-accent); color: #ffffff; }
.btn--primary:hover { background: var(--color-accent-hover); color: #ffffff; }
.btn--outline { border-color: #5a5c61; color: var(--color-nav-text); background: transparent; }
.btn--outline:hover { border-color: #8a8d93; color: #ffffff; background: rgba(255, 255, 255, 0.05); }
.btn--lg  { font-size: 15px; padding: 14px 26px; }
.btn--cta { font-size: 16px; padding: 15px 32px; }

/* Anker-Sprünge: Überschriften nicht unter der Sticky-Nav verstecken */
main section[id] { scroll-margin-top: 84px; }

/* --- Header ---------------------------------------------------------------- */
.site-header { background: var(--color-header-bg); border-bottom: 1px solid var(--color-border); }
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap; padding-block: 12px;
}
.brand__logo { height: 52px; width: auto; }
.header-contact { display: flex; align-items: center; gap: 26px; font-size: 13px; color: var(--color-muted); flex-wrap: wrap; }
.header-contact__item { display: flex; align-items: center; gap: 8px; }
.header-contact__item svg { color: var(--color-accent); flex: none; }

/* --- Navigation (sticky) ----------------------------------------------------- */
.site-nav {
  background: var(--color-nav-bg);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; padding-inline: 20px;
}
.nav__links { display: flex; flex-wrap: wrap; }
.nav__links a {
  color: var(--color-nav-text); font-size: 13px; font-weight: 700;
  padding: 18px 16px; display: block;
}
.nav__links a:hover { color: #ffffff; background: rgba(255, 255, 255, 0.06); }
.btn--nav { margin-block: 8px; }

/* --- Hero ---------------------------------------------------------------- */
.hero { background: var(--color-body-bg); }
.hero__inner {
  padding-block: clamp(48px, 7vw, 80px) clamp(56px, 8vw, 96px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
  gap: clamp(36px, 5vw, 64px);
  align-items: center;
}
.hero__copy { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; }
.hero__title {
  font-size: clamp(32px, 4.5vw, 50px);
  line-height: 1.14; font-weight: 600;
  color: #ffffff; letter-spacing: -0.5px; text-wrap: balance;
}
.hero__lead { margin: 0; font-size: 18px; line-height: 1.6; color: var(--color-nav-text); font-weight: 600; max-width: 56ch; }
.hero__text { margin: 0; font-size: 15px; line-height: 1.7; color: var(--color-dark-muted); max-width: 58ch; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 6px; }

.hero__media { position: relative; margin-left: 28px; }
.hero__img {
  width: 100%; height: clamp(280px, 38vw, 450px);
  object-fit: cover; border-radius: var(--radius-l); background: #3a3b3f;
}
.hero-card {
  position: absolute; left: -28px; bottom: -30px;
  background: var(--color-header-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 16px 20px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  display: flex; flex-direction: column; gap: 5px;
  min-width: 250px;
}
.hero-card__kicker {
  font-size: 11px; font-weight: 700; letter-spacing: 1.2px;
  text-transform: uppercase; color: var(--color-accent);
}
.hero-card__title { font-size: 19px; font-weight: 700; color: var(--color-nav-bg); }
.hero-card__sub { font-size: 13px; color: var(--color-muted); }

/* --- Cards (Leistungen / Anwendungsfälle) ----------------------------------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
}
.card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.card__img { width: 100%; height: 185px; object-fit: cover; background: var(--color-border); }
.card__body { padding: 26px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.card__icon { display: flex; align-items: center; color: var(--color-accent); }
.card__title { font-size: 19px; line-height: 1.3; font-weight: 600; color: var(--color-heading); }
.card__text { margin: 0; font-size: 14px; line-height: 1.7; color: var(--color-muted); }
.card__body .card__text { flex: 1; }
.card__text strong { color: var(--color-heading); }
.card__result {
  margin: 0; font-size: 14px; line-height: 1.6; color: var(--color-text);
  border-top: 1px solid var(--color-border); padding-top: 12px;
}
.card__result strong { color: var(--color-accent); }

.card--text { padding: 26px; gap: 14px; }
.card__branch {
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--color-muted-2);
}
.footnote { margin: 40px 0 0; font-size: 12.5px; line-height: 1.6; color: var(--color-muted-2); }

/* --- Technische Daten -------------------------------------------------------- */
.specs__inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.specs__inner .section-head { margin-bottom: 0; }
.spec-table { margin: 0; display: flex; flex-direction: column; border-top: 1px solid rgba(255, 255, 255, 0.16); }
.spec-row {
  display: grid;
  grid-template-columns: clamp(120px, 28%, 200px) 1fr;
  gap: 20px; padding: 15px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14.5px; line-height: 1.55;
}
.spec-row dt { color: var(--color-dark-muted-2); font-weight: 700; }
.spec-row dd { margin: 0; color: #ffffff; }
.spec-sep { color: var(--color-dark-muted-2); }
.tnum { font-variant-numeric: tabular-nums; }

/* --- Ablauf ---------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  gap: 24px;
  margin-top: 8px;
}
.step { display: flex; flex-direction: column; gap: 16px; }
.step__head { display: flex; align-items: center; gap: 12px; }
.step__num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--color-accent); color: #ffffff;
  font-size: 19px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex: none; font-variant-numeric: tabular-nums;
}
.step__line { flex: 1; border-top: 2px dashed #c9cacd; }
.step__title { font-size: 17px; line-height: 1.3; font-weight: 600; color: var(--color-heading); }
.step__text { margin: 0; font-size: 14px; line-height: 1.7; color: var(--color-muted); }

/* --- FAQ ---------------------------------------------------------------- */
.faq-list { display: flex; flex-direction: column; border-top: 1px solid var(--color-border); }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 4px; cursor: pointer;
  font-size: 16px; font-weight: 600; color: var(--color-heading);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--color-accent); }
.faq-plus { color: var(--color-accent); font-size: 20px; font-weight: 400; flex: none; }
.faq-item p { margin: 0; padding: 0 4px 20px; font-size: 14.5px; line-height: 1.7; color: var(--color-muted); max-width: 70ch; }

/* --- Kontakt / CTA ------------------------------------------------------------ */
.container--cta {
  padding-block: clamp(56px, 8vw, 88px);
  display: flex; flex-direction: column; align-items: center;
  gap: 22px; text-align: center;
}
#kontakt.section { padding-block: 0; } /* Padding liegt auf .container--cta */
.cta__title {
  font-size: clamp(27px, 4vw, 36px);
  line-height: 1.2; font-weight: 600;
  color: #ffffff; letter-spacing: -0.3px; text-wrap: balance;
}
.cta__text { margin: 0; font-size: 16px; line-height: 1.7; color: var(--color-dark-muted); max-width: 62ch; }
.cta__alt { margin: 0; font-size: 13px; color: #808388; }

/* Formular (dunkler Grund) */
.contact-form {
  width: 100%; max-width: 640px;
  display: grid; gap: 18px;
  text-align: left; margin-top: 8px;
}
.field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 13px; font-weight: 700; color: var(--color-nav-text); }
.field input, .field textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-s);
  color: #ffffff; font: inherit; font-size: 14.5px;
}
.field input::placeholder, .field textarea::placeholder { color: #808388; }
.field input:focus, .field textarea:focus { border-color: var(--color-accent); outline: none; }
.field input[type="file"] { padding: 9px 10px; color: var(--color-dark-muted); font-size: 13px; }
.field input[type="file"]::file-selector-button {
  font: inherit; font-weight: 700; font-size: 12px;
  color: #ffffff; background: rgba(255, 255, 255, 0.14);
  border: 0; border-radius: var(--radius-s);
  padding: 6px 12px; margin-right: 12px; cursor: pointer;
}
.field--consent label {
  font-weight: 400; font-size: 13px; line-height: 1.6;
  color: var(--color-dark-muted);
  display: flex; gap: 10px; align-items: flex-start;
}
.field--consent input { width: 16px; height: 16px; margin-top: 2px; flex: none; accent-color: var(--color-accent); }
.btn--cta { justify-self: start; border: 0; }

/* Honeypot komplett verstecken */
.field--hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-status { margin: 0; min-height: 1.5em; font-size: 14px; font-weight: 600; }
.form-status.is-ok  { color: #4ade80; }
.form-status.is-err { color: #f87171; }

/* --- Footer ---------------------------------------------------------------- */
.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.site-footer .container {
  padding-block: clamp(40px, 6vw, 56px) 28px;
  display: flex; flex-direction: column; gap: 44px;
}
.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 40px;
}
.footer__col { display: flex; flex-direction: column; gap: 10px; }
.footer__col--brand { gap: 14px; }
.footer__brandrow { display: flex; align-items: center; gap: 12px; }
.footer__logo { height: 40px; width: auto; background: var(--color-header-bg); border-radius: var(--radius-s); padding: 3px; }
.footer__wordmark { font-size: 17px; color: var(--color-nav-text); font-weight: 400; }
.footer__wordmark strong { font-weight: 700; }
.footer__text { margin: 0; font-size: 13px; line-height: 1.7; color: var(--color-dark-muted-2); max-width: 38ch; }
.footer__head {
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: #808388;
}
.footer__col a { font-size: 13px; color: var(--color-dark-muted); }
.footer__col a:hover { color: #ffffff; }
.footer__line { font-size: 13px; color: var(--color-dark-muted); }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 22px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; color: #808388;
}
.footer__legal { display: flex; gap: 22px; }
.footer__legal a { font-size: 12.5px; color: var(--color-dark-muted-2); }
.footer__legal a:hover { color: #ffffff; }

/* ==========================================================================
   Mobile (≤ 760px) — Bedienbarkeit
   Handoff erlaubt Breakpoints explizit („im Zielprojekt gern durch
   Breakpoints ersetzen. Touch-Ziele ≥ 44px").
   ========================================================================== */
@media (max-width: 760px) {
  main section[id] { scroll-margin-top: 64px; }

  /* Sticky-Nav: EINE kompakte Zeile statt drei —
     Links horizontal scrollbar, CTA bleibt immer sichtbar */
  .nav__inner {
    flex-wrap: nowrap;
    gap: 4px;
    padding-inline: 0 12px;
  }
  .nav__links {
    flex: 1 1 auto;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav__links::-webkit-scrollbar { display: none; }
  .nav__links a { padding: 16px 12px; white-space: nowrap; }
  .btn--nav {
    flex: none;
    font-size: 12px;
    padding: 9px 12px;
    margin-block: 0;
  }

  /* Header: Kontaktzeile mit ausreichend Tap-Fläche */
  .header-contact { gap: 18px; }
  .header-contact__item { padding-block: 4px; }

  /* Hero: Bild volle Breite, Info-Card bündig; Buttons volle Breite */
  .hero__media { margin-left: 0; }
  .hero-card {
    left: 0;
    bottom: -24px;
    min-width: 0;
    max-width: calc(100% - 24px);
  }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1 1 100%; text-align: center; }

  /* Formular: 16px verhindert iOS-Auto-Zoom beim Fokussieren,
     Submit volle Breite, Checkbox größer */
  .field input, .field textarea { font-size: 16px; }
  .field--consent input { width: 20px; height: 20px; }
  .btn--cta { width: 100%; text-align: center; }

  /* Footer: Links mit Tap-Fläche ≥ 24px (WCAG 2.2) */
  .footer__col a, .footer__legal a { padding-block: 6px; }
  .footer__line { padding-block: 3px; }
}