/* ===================================================================
   BioCleanTech – Stylesheet (v2: hell, luftig, modern)
   Aufbau:
   0) lokale Google FONTS einbinden
   1) Farben & Variablen
   2) Grund-Reset
   3) Layout-Helfer
   4) Buttons
   5) Header
   6) Hero
   7) Kennzahlen-Band
   8) Vorteile
   9) Prozess
   10) Anwendung (große Kacheln)
   11) Kundenstimmen
   12) Kontakt / CTA
   13) Footer
   14) Scroll-Animationen
   15) Responsive
   =================================================================== */
/* ----------  0) lokale Google FONTS einbinden ---------- */
/* poppins-500 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 500;
  src: url('../fonts/poppins-v24-latin-500.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}
/* poppins-600 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 600;
  src: url('../fonts/poppins-v24-latin-600.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}
/* poppins-700 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/poppins-v24-latin-700.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}


/* mulish-regular - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Mulish';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/mulish-v18-latin-regular.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}
/* mulish-600 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Mulish';
  font-style: normal;
  font-weight: 600;
  src: url('../fonts/mulish-v18-latin-600.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}
/* mulish-700 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Mulish';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/mulish-v18-latin-700.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}


   /* ---------- 1) Farben & Variablen ---------- */
:root {
  --green:   #0f9d6e;
  --teal:    #0a869c;
  --blue:    #1a6fd6;
  --ink:     #16202e;   /* fast-schwarze Überschriften */
  --body:    #44505f;   /* Fließtext, etwas weicher als ink */
  --muted:   #8090a0;   /* graue Nebentexte */
  --bg:      #ffffff;
  --bg-soft: #f7fafb;   /* sehr zarter Hintergrund */
  --line:    #eaf0f2;
  --orange:      #ff7a1a;
  --orange-dark: #e8650a;

  --grad: linear-gradient(120deg, var(--green) 0%, var(--teal) 50%, var(--blue) 100%);

  --radius: 20px;
  --radius-sm: 14px;
  --shadow-sm: 0 4px 16px rgba(16, 60, 80, 0.06);
  --shadow: 0 18px 50px rgba(16, 60, 80, 0.12);
  --maxw: 1180px;

  --font-head: 'Poppins', system-ui, sans-serif;
  --font-body: 'Mulish', system-ui, sans-serif;
}

/* ---------- 2) Grund-Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--body);
  background: var(--bg);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; color: var(--ink); }
a { color: var(--teal); text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- 3) Layout-Helfer ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* viel mehr Luft als vorher */
.section { padding: 120px 0; }
.section-soft { background: var(--bg-soft); }

/* kleine Überschrift/Label über der großen Überschrift */
.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.section-intro {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 620px;
  margin-bottom: 64px;
}
/* zentrierte Section-Köpfe */
.section-head-center { text-align: center; }
.section-head-center .section-intro { margin-left: auto; margin-right: auto; }

/* ---------- 4) Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 26px rgba(26,111,214,.28); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(26,111,214,.36); }
.btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn-light { background: var(--orange); color: #fff; border: 1.5px solid var(--orange); }
.btn-light:hover { background: var(--orange-dark); border-color: var(--orange-dark); }
.btn-arrow::after { content: "→"; font-size: 1.1em; }

/* ---------- 5) Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  /* sanfter Übergang */
  transition: background .3s ease, box-shadow .3s ease;
}
/* großer Startzustand */
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 104px;
  transition: height .3s ease;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-logo { height: 64px; width: auto; transition: height .3s ease; }
.brand-name {
  font-family: var(--font-head); font-weight: 500; font-size: 1.6rem;
  color: var(--ink); letter-spacing: -0.3px; transition: font-size .3s ease;
}
.brand-name strong { font-weight: 700; }

/* kompakter Zustand beim Scrollen */
.site-header.scrolled { box-shadow: 0 4px 20px rgba(16,60,80,.08); }
.site-header.scrolled .header-inner { height: 68px; }
.site-header.scrolled .brand-logo { height: 38px; }
.site-header.scrolled .brand-name { font-size: 1.25rem; }
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a { color: var(--ink); font-weight: 600; font-size: .97rem; transition: color .15s; }
.main-nav a:hover { color: var(--teal); }
.nav-cta { background: var(--orange); color: #fff !important; padding: 11px 24px; border-radius: 999px; }
.nav-cta:hover { transform: translateY(-2px); background: var(--orange-dark); }

/* ---------- 6) Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(26,111,214,.10), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(15,157,110,.10), transparent 55%),
    var(--bg);
  padding: 120px 0 130px;
}
.hero-grid {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 64px; align-items: center;
}
.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  font-weight: 700; letter-spacing: -1.5px;
  margin-bottom: 24px;
}
/* Verlaufstext für ein Wort als Akzent */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub { font-size: 1.2rem; color: var(--body); max-width: 520px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual {
  position: relative; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  aspect-ratio: 4/5;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
/* schwebende kleine Karte auf dem Bild */
.hero-badge {
  position: absolute; left: 20px; bottom: 20px; right: 20px;
  background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  border-radius: var(--radius-sm); padding: 18px 20px;
  display: flex; align-items: center; gap: 14px; box-shadow: var(--shadow-sm);
}
.hero-badge .dot { width: 44px; height: 44px; border-radius: 12px; background: var(--grad); flex: 0 0 auto; display: grid; place-items: center; color: #fff; font-size: 1.3rem; }
.hero-badge strong { display: block; color: var(--ink); font-family: var(--font-head); }
.hero-badge span { font-size: .9rem; color: var(--muted); }

/* ---------- 7) Kennzahlen-Band ---------- */
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 28px; margin-top: -70px; position: relative; z-index: 5;
}
.stat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.stat:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.stat-icon { width: 50px; height: 50px; border-radius: 14px; background: var(--grad); display: grid; place-items: center; color: #fff; font-size: 1.4rem; margin-bottom: 16px; }
.stat h3 { font-size: 1.15rem; margin-bottom: 6px; }
.stat p { color: var(--muted); font-size: .96rem; }

/* ---------- 8) Vorteile ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 38px 34px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.card-icon {
  width: 58px; height: 58px; border-radius: 16px;
  display: grid; place-items: center; font-size: 1.6rem; color: #fff;
  background: var(--grad); margin-bottom: 22px;
}
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--body); }

/* ---------- 9) Prozess (vertikale Zeitleiste) ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; }
/* die graue Grundlinie links neben den Nummern */
.timeline-line {
  position: absolute; left: 27px; top: 18px; bottom: 18px;
  width: 3px; background: var(--line); border-radius: 3px; overflow: hidden;
}
/* der farbige Teil, der beim Scrollen nach unten wächst */
.timeline-fill {
  position: absolute; left: 0; top: 0; width: 100%; height: 0;
  background: linear-gradient(180deg, var(--green), var(--teal), var(--blue));
  transition: height 1.4s ease;
}
.timeline.is-visible .timeline-fill { height: 100%; }

.tl-step {
  position: relative; display: flex; gap: 24px; padding: 0 0 38px 0;
  opacity: 0; transform: translateX(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.timeline.is-visible .tl-step { opacity: 1; transform: none; }
/* Schritte nacheinander einblenden */
.timeline.is-visible .tl-step:nth-child(3) { transition-delay: .15s; }
.timeline.is-visible .tl-step:nth-child(4) { transition-delay: .35s; }
.timeline.is-visible .tl-step:nth-child(5) { transition-delay: .55s; }
.tl-step:last-child { padding-bottom: 0; }

.tl-num {
  flex: 0 0 auto; width: 56px; height: 56px; border-radius: 50%;
  background: var(--grad); display: grid; place-items: center;
  font-family: var(--font-head); font-weight: 700; font-size: 1.4rem;
  color: #fff; z-index: 2; box-shadow: 0 6px 18px rgba(26,111,214,.25);
}
.tl-body {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 22px 26px; flex: 1; box-shadow: var(--shadow-sm);
}
.tl-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
.tl-body p { color: var(--body); font-size: 1rem; }

/* Step-Layout: Text links, kleines Bild rechts */
.tl-body { display: flex; align-items: center; gap: 20px; }
.tl-text { flex: 1; }
.tl-thumb {
  flex: 0 0 auto; width: 120px; height: 120px;
  border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.tl-thumb img { width: 100%; height: 100%; object-fit: cover; }
/* leerer Platzhalter, solange Bild 3 fehlt */
.tl-thumb-empty {
  background: var(--bg-soft);
  border: 1px dashed var(--line);
  box-shadow: none;
}


/* Produkt-Segment */
.product {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 48px;
  align-items: center;
  margin-top: 72px;
}

.product-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 3/4;            /* Hochformat für den stehenden Kanister */
  max-width: 360px;
  margin: 0 auto;
  background: #fff;             /* zarte weiße Karte auf grauem Section-Grund */
}
.product-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;          /* Kanister komplett sichtbar, kein Beschnitt */
  padding: 24px;                /* etwas Luft zum Rahmen */
}

.product-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
}
.product-text p {
  color: var(--body);
  margin-bottom: 20px;
}
.product-points {
  list-style: none;
  display: grid;
  gap: 10px;
}
.product-points li {
  position: relative;
  padding-left: 28px;
  color: var(--ink);
  font-weight: 600;
}
.product-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}



@media (prefers-reduced-motion: reduce) {
  .tl-step { opacity: 1; transform: none; transition: none; }
  .timeline-fill { transition: none; }
}

/* ---------- 10) Anwendung (große Kacheln) ---------- */
.tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.tile {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16/10; box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}
.tile:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.tile img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.tile:hover img { transform: scale(1.06); }
.tile-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,30,45,.78) 0%, rgba(10,30,45,.15) 55%, transparent 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 28px;
}
.tile-overlay h3 { color: #fff; font-size: 1.45rem; margin-bottom: 6px; }
.tile-overlay p { color: rgba(255,255,255,.85); font-size: .95rem; }
/* zusätzliche Bereiche als Pills darunter */
.area-pills { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; justify-content: center; }
.area-pills span {
  background: var(--bg-soft); border: 1px solid var(--line);
  padding: 10px 20px; border-radius: 999px; font-size: .95rem; color: var(--ink); font-weight: 600;
}

/* ---------- 11) Kundenstimmen ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.quote {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; display: flex; flex-direction: column;
}
.quote .mark { font-family: var(--font-head); font-size: 3rem; line-height: 1; color: var(--green); opacity: .35; margin-bottom: 8px; }
.quote p { color: var(--body); font-style: italic; flex: 1; }
.quote .who { display: flex; align-items: center; gap: 12px; margin-top: 22px; }
.quote .avatar { width: 46px; height: 46px; border-radius: 50%; background: var(--grad); flex: 0 0 auto; }
.quote .who strong { display: block; color: var(--ink); font-family: var(--font-head); font-size: .98rem; }
.quote .who span { font-size: .85rem; color: var(--muted); }

/* ---------- 12) Kontakt / CTA ---------- */
.cta {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--grad); color: #fff;
  padding: 72px 56px;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background: url('../img/cta-bg.jpg') center/cover; opacity: .14; mix-blend-mode: overlay;
}
.cta > * { position: relative; z-index: 1; }
.cta h2 { color: #fff; font-size: clamp(1.8rem, 3.2vw, 2.6rem); margin-bottom: 16px; letter-spacing: -0.5px; }
.cta p { color: rgba(255,255,255,.92); font-size: 1.1rem; margin-bottom: 28px; }
.contact-card {
  background: rgba(255,255,255,.12); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.25); border-radius: var(--radius-sm);
  padding: 30px;
}
.contact-label { text-transform: uppercase; letter-spacing: 2px; font-size: .75rem; color: rgba(255,255,255,.8); }

.contact-photo {
  width: 96px; height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255,255,255,.4);
  margin-bottom: 18px;
  display: block;
}


.contact-name { font-family: var(--font-head); font-weight: 700; font-size: 1.5rem; color: #fff; margin: 6px 0 16px; }
.contact-card a { color: #fff; font-weight: 600; }
.contact-card a:hover { text-decoration: underline; }
.contact-company { margin-top: 16px; color: rgba(255,255,255,.85); font-size: .95rem; }

/* ---------- 13) Footer ---------- */
.site-footer { background: var(--ink); color: #aeb9c5; padding: 36px 0; text-align: center; font-size: .92rem; }
.site-footer a { color: #cfd8e0; }

/* ---------- 14) Scroll-Animationen ---------- */
/* Startzustand: leicht nach unten + unsichtbar */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
/* gestaffeltes Einblenden von Kindern */
.reveal-stagger > * { opacity: 0; transform: translateY(28px); transition: opacity .6s ease, transform .6s ease; }
.reveal-stagger.is-visible > * { opacity: 1; transform: none; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: .08s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: .16s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: .24s; }
/* Respektiere Nutzer, die keine Animationen wollen */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 15) Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { aspect-ratio: 16/11; max-height: 420px; }
  .quotes { grid-template-columns: 1fr; }
  .cta { grid-template-columns: 1fr; padding: 56px 36px; }
}
@media (max-width: 640px) {
  .section { padding: 80px 0; }
  .container { padding: 0 20px; }
  .main-nav { gap: 16px; }
  .main-nav a:not(.nav-cta) { display: none; }
  .cards, .stats, .tiles { grid-template-columns: 1fr; }
  .timeline-line { left: 22px; }
  .tl-num { width: 46px; height: 46px; font-size: 1.2rem; }
  .tl-step { gap: 16px; }
  .tl-body { padding: 18px 20px; }
  .stats { margin-top: -40px; }
  .brand-name { font-size: 1.1rem; }
  .tl-body { flex-direction: column; align-items: flex-start; }
  .product { grid-template-columns: 1fr; gap: 28px; }
  .tl-thumb { width: 100%; height: 160px; }
}

/* ---------- 16) LEGAL ---------- */

    .legal {
      max-width: 760px;
      margin: 0 auto;
      padding: 48px 24px 72px;
    }
    .legal h1 { margin-bottom: 28px; }
    .legal h2 {
      margin-top: 36px;
      margin-bottom: 10px;
      font-size: 1.15rem;
    }
    .legal p { margin-bottom: 8px; line-height: 1.65; }
    .legal a { color: inherit; text-decoration: underline; }
    .back-link {
      display: inline-block;
      margin-top: 40px;
      font-weight: 600;
    }