/* Atelier Teigelkötter – Übergangs-Website
   Statisch, ohne externe Ressourcen (keine Cookies, keine Google-Fonts-Server). */

@font-face {
  font-family: "Montserrat";
  font-style: normal; font-weight: 300 600; font-display: swap;
  src: url("../fonts/montserrat-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Cormorant Garamond";
  font-style: normal; font-weight: 400 600; font-display: swap;
  src: url("../fonts/cormorant-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Cormorant Garamond";
  font-style: italic; font-weight: 400 600; font-display: swap;
  src: url("../fonts/cormorant-italic-latin.woff2") format("woff2");
}

:root {
  --cream: #f6f2ec;
  --cream-deep: #ece5da;
  --white: #ffffff;
  --ink: #1f1d1b;
  --text: #4a4541;
  --muted: #8b837b;
  --line: #ddd4c7;
  --copper: #a8683f;          /* angelehnt an Kupfer am Atelier-Gebäude */
  --copper-dark: #8a5230;
  --dark: #24211f;
  --header-h: 96px;
  --demo-h: 0px;
  --max: 1200px;
  --sans: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --ease: cubic-bezier(.2,.7,.2,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + var(--demo-h) + 12px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }

body {
  margin: 0;
  font-family: var(--sans); font-weight: 300; font-size: 16px; line-height: 1.8;
  color: var(--text); background: var(--cream);
  -webkit-font-smoothing: antialiased;
  display: flex; flex-direction: column; min-height: 100vh;
}
main { flex: 1 0 auto; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover, a:focus-visible { color: var(--copper); }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }
p { margin: 0 0 1.2em; }
strong { font-weight: 500; color: var(--ink); }

h1, h2, h3 { font-family: var(--serif); font-weight: 500; color: var(--ink); line-height: 1.15; margin: 0 0 .6em; letter-spacing: .005em; }
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3rem); }
h3 { font-size: 1.6rem; }
h1 em, h2 em { font-style: italic; color: var(--copper); }

.eyebrow {
  display: inline-block; font-family: var(--sans); font-size: 12px; font-weight: 500;
  letter-spacing: .22em; text-transform: uppercase; color: var(--copper); margin-bottom: 1.2rem;
}
.eyebrow::before { content: ""; display: inline-block; width: 28px; height: 1px; background: currentColor; vertical-align: middle; margin-right: 12px; }
.lead { font-size: 1.12rem; color: var(--ink); }

.container { width: min(var(--max), 100% - 3rem); margin-inline: auto; }
.narrow { max-width: 720px; }
.center { text-align: center; margin-inline: auto; }
.center .eyebrow::before { display: none; }

.skip-link { position: absolute; left: -999px; top: 0; z-index: 1000; background: var(--ink); color: #fff; padding: .6rem 1rem; }
.skip-link:focus { left: 1rem; top: 1rem; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  font: 500 13px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase;
  padding: 1.05rem 1.8rem; border: 1px solid var(--ink); color: var(--ink); background: transparent;
  cursor: pointer; transition: background .25s, color .25s, border-color .25s;
}
.btn:hover, .btn:focus-visible { background: var(--ink); color: #fff; }
.btn-solid { background: var(--copper); border-color: var(--copper); color: #fff; }
.btn-solid:hover, .btn-solid:focus-visible { background: var(--copper-dark); border-color: var(--copper-dark); color: #fff; }
.btn-light { border-color: rgba(255,255,255,.7); color: #fff; }
.btn-light:hover, .btn-light:focus-visible { background: #fff; color: var(--ink); }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.link-arrow { font-weight: 500; font-size: 14px; letter-spacing: .08em; text-transform: uppercase; color: var(--copper); border-bottom: 1px solid currentColor; padding-bottom: 2px; }

/* ---------- Demo-Hinweis (eigene Leiste über dem Header → kann Logo nicht überlagern) ---------- */
.demo-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 110;
  height: 28px; display: flex; align-items: center; justify-content: center;
  background: var(--dark); color: #d9cfc2;
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase; line-height: 1;
}
body.has-demo { --demo-h: 28px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; left: 0; right: 0; top: var(--demo-h); z-index: 100;
  height: var(--header-h);
  background: rgba(246,242,236,.92);
  backdrop-filter: saturate(1.2) blur(10px); -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid transparent;
  transition: height .3s var(--ease), border-color .3s, background .3s;
}
.site-header.scrolled { height: 76px; border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(40,30,20,.06); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.logo { display: block; flex-shrink: 0; }
.logo img { height: 74px; width: auto; transition: height .3s var(--ease); }
.site-header.scrolled .logo img { height: 58px; }

.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 2.2rem; }
.main-nav a {
  position: relative; font-size: 13px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--ink);
  padding: .4rem 0;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--copper);
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.main-nav a:hover::after, .main-nav a:focus-visible::after, .main-nav a[aria-current="page"]::after { transform: scaleX(1); }
.main-nav a[aria-current="page"] { color: var(--copper); }
.main-nav .ext::after { display: none; }
.main-nav .ext span[aria-hidden] { font-size: 11px; margin-left: 3px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 44px; height: 44px; padding: 0; color: var(--ink); }
.nav-toggle .bars, .nav-toggle .bars::before, .nav-toggle .bars::after {
  display: block; width: 24px; height: 1.5px; background: currentColor; margin: 0 auto; position: relative; transition: transform .25s, background .25s;
}
.nav-toggle .bars::before, .nav-toggle .bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle .bars::before { top: -7px; } .nav-toggle .bars::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .bars::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bars::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .main-nav {
    /* absolute zum Header (backdrop-filter macht den Header zum Containing Block) */
    position: absolute; left: 0; right: 0; top: 100%;
    height: calc(100svh - var(--header-h) - var(--demo-h)); overflow-y: auto;
    background: var(--cream); padding: 2rem 1.5rem;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .25s, transform .25s, visibility .25s;
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: none; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav li { border-bottom: 1px solid var(--line); }
  .main-nav a { display: block; padding: 1.1rem 0; font-family: var(--serif); font-size: 1.8rem; letter-spacing: 0; text-transform: none; font-weight: 500; }
  .main-nav a::after { display: none; }
  .logo img, .site-header.scrolled .logo img { height: 60px; }
}

main { padding-top: calc(var(--header-h) + var(--demo-h)); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h) - var(--demo-h));
  min-height: calc(100svh - var(--header-h) - var(--demo-h));
  display: flex; align-items: flex-end; color: #fff; overflow: hidden; background: var(--dark);
}
.hero .slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.06); transition: opacity 1.6s ease, transform 7s linear;
}
.hero .slide.active { opacity: 1; transform: scale(1); }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(20,18,16,.55) 0%, rgba(20,18,16,.15) 55%, rgba(20,18,16,0) 100%),
    linear-gradient(180deg, rgba(20,18,16,.25) 0%, rgba(20,18,16,0) 30%, rgba(20,18,16,.2) 55%, rgba(20,18,16,.75) 100%);
}
@media (max-width: 700px) { .hero::after { background: linear-gradient(180deg, rgba(20,18,16,.3) 0%, rgba(20,18,16,.45) 40%, rgba(20,18,16,.8) 100%); } }
.hero-content { position: relative; z-index: 2; padding: 0 0 clamp(4rem, 9vh, 7rem); }
.hero .eyebrow { color: #e9c9a8; }
.hero h1 { color: #fff; max-width: 14ch; margin-bottom: .35em; }
.hero h1 em { color: #e9c9a8; }
.hero p { max-width: 520px; font-size: 1.08rem; color: rgba(255,255,255,.88); }
.hero-controls { position: absolute; right: 0; bottom: clamp(4rem, 9vh, 7rem); z-index: 3; display: flex; align-items: center; gap: 1rem; }
.hero-count { font-family: var(--serif); font-size: 1.2rem; min-width: 4.2ch; text-align: center; }
.hero-btn {
  width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255,255,255,.6); background: transparent;
  color: #fff; cursor: pointer; font-size: 20px; line-height: 1; transition: background .2s, color .2s;
}
.hero-btn:hover, .hero-btn:focus-visible { background: #fff; color: var(--ink); }
.hero-progress { position: absolute; left: 0; bottom: 0; height: 3px; background: var(--copper); z-index: 3; width: 0; }
.hero-progress.run { animation: heroProgress var(--hero-interval, 6s) linear forwards; }
@keyframes heroProgress { from { width: 0; } to { width: 100%; } }
@media (max-width: 700px) { .hero-controls { position: static; margin-top: 2rem; } }

/* Seiten-Kopf für Unterseiten */
.page-hero { position: relative; min-height: 62vh; display: flex; align-items: flex-end; color: #fff; background: var(--dark) center/cover no-repeat; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,18,16,.2), rgba(20,18,16,.7)); }
.page-hero .container { position: relative; z-index: 1; padding: 0 0 clamp(3rem, 7vh, 5rem); }
.page-hero h1 { color: #fff; margin: 0; }
.page-hero .eyebrow { color: #e9c9a8; }
.page-hero.light { color: var(--ink); background-color: var(--white); background-size: contain; min-height: 48vh; }
.page-hero.light::after { display: none; }

.breadcrumb { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 1rem; opacity: .85; }
.breadcrumb a { border-bottom: 1px solid transparent; }
.breadcrumb a:hover { border-bottom-color: currentColor; color: inherit; }

/* ---------- Sektionen ---------- */
.section { padding: clamp(5rem, 11vw, 9rem) 0; }
.section-tight { padding: clamp(3.5rem, 7vw, 5.5rem) 0; }
.bg-white { background: var(--white); }
.bg-deep { background: var(--cream-deep); }
.bg-dark { background: var(--dark); color: #cfc6bb; }
.bg-dark h2, .bg-dark h3 { color: #fff; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 7vw, 7rem); align-items: center; }
.split.reverse > :first-child { order: 2; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } .split.reverse > :first-child { order: 0; } }

.framed { position: relative; }
.framed img { position: relative; z-index: 1; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.framed::before { content: ""; position: absolute; inset: 1.5rem -1.5rem -1.5rem 1.5rem; border: 1px solid var(--copper); z-index: 0; }
.framed.wide img { aspect-ratio: 4 / 3; }
.framed .caption {
  position: absolute; z-index: 2; left: -1.5rem; bottom: 2rem; background: var(--white); padding: 1rem 1.4rem;
  font-family: var(--serif); font-size: 1.25rem; color: var(--ink); box-shadow: 0 10px 30px rgba(0,0,0,.08);
}
.framed .caption small { display: block; font-family: var(--sans); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
@media (max-width: 900px) { .framed::before { inset: 1rem -.8rem -1rem .8rem; } .framed .caption { left: 0; } }

/* Kennzahlen-Leiste */
.facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.fact { padding: 2.4rem 1.5rem; text-align: center; }
.fact + .fact { border-left: 1px solid var(--line); }
.fact .num { display: block; font-family: var(--serif); font-size: clamp(2.4rem, 4vw, 3.4rem); color: var(--copper); line-height: 1; margin-bottom: .6rem; }
.fact .label { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink); }
@media (max-width: 700px) { .facts { grid-template-columns: 1fr; } .fact + .fact { border-left: 0; border-top: 1px solid var(--line); } }

/* Karten: Schmuck / Trauringe / Lasertechnik */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin-top: 3.5rem; }
@media (max-width: 1000px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 650px) { .cards { grid-template-columns: 1fr; } }
.card { display: flex; flex-direction: column; background: var(--white); color: var(--text); transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
.card:hover, .card:focus-visible { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(40,30,20,.12); color: var(--text); }
.card .media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--white); }
.card .media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.card .media.contain img { object-fit: contain; padding: 1.2rem; }
.card:hover .media img { transform: scale(1.05); }
.card .body { padding: 1.8rem 1.8rem 2rem; display: flex; flex-direction: column; flex: 1; }
.card h3 { margin-bottom: .4em; }
.card p { font-size: 15px; flex: 1; }
.card .link-arrow { align-self: flex-start; }

/* Bild-Band mit Zitat */
.quote-band { position: relative; min-height: 70vh; display: flex; align-items: center; background: var(--dark) center/cover no-repeat fixed; color: #fff; }
.quote-band::before { content: ""; position: absolute; inset: 0; background: rgba(20,18,16,.55); }
.quote-band .container { position: relative; }
.quote-band blockquote { margin: 0; max-width: 780px; font-family: var(--serif); font-style: italic; font-size: clamp(1.8rem, 3.6vw, 2.8rem); line-height: 1.3; }
.quote-band cite { display: block; margin-top: 1.5rem; font-family: var(--sans); font-style: normal; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: #e9c9a8; }
@media (hover: none), (max-width: 900px) { .quote-band { background-attachment: scroll; } }

/* Galerie */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 3rem; }
.gallery a { position: relative; display: block; overflow: hidden; aspect-ratio: 1; background: var(--cream-deep); }
.gallery a.tall { grid-row: span 2; aspect-ratio: auto; }
.gallery a.wide { grid-column: span 2; aspect-ratio: auto; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s var(--ease), filter .4s; }
.gallery a::after {
  content: "+"; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 3rem; color: #fff; background: rgba(31,29,27,.35); opacity: 0; transition: opacity .35s;
}
.gallery a:hover img, .gallery a:focus-visible img { transform: scale(1.06); }
.gallery a:hover::after, .gallery a:focus-visible::after { opacity: 1; }
.gallery.products a { background: var(--white); }
.gallery.products img { object-fit: cover; transform: scale(1.45); }
.gallery.products a:hover img, .gallery.products a:focus-visible img { transform: scale(1.55); }
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, 1fr); } .gallery a.wide { grid-column: span 2; } }

/* Prozess-Schritte */
.steps { list-style: none; margin: 3rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; counter-reset: step; }
.steps li { counter-increment: step; padding-top: 1.4rem; border-top: 1px solid var(--copper); }
.steps li::before { content: "0" counter(step); display: block; font-family: var(--serif); font-size: 2.2rem; color: var(--copper); line-height: 1; margin-bottom: .8rem; }
.steps h3 { font-size: 1.35rem; margin-bottom: .3em; }
.steps p { font-size: 15px; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* Merkmale (3 Spalten) */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.features > div { border-top: 1px solid var(--copper); padding-top: 1.4rem; }
.features h3 { font-size: 1.45rem; margin-bottom: .3em; }
.features p { font-size: 15px; margin: 0; }
@media (max-width: 800px) { .features { grid-template-columns: 1fr; } }

/* Trauring-Streifen (freigestellte Bilder, weißer Grund) */
.ring-strip { background: var(--white); }
.ring-strip img { width: 100%; max-width: 1400px; margin: 0 auto; }

/* CTA */
.cta { text-align: center; }
.cta h2 { max-width: 18ch; margin-inline: auto; }
.cta .btn-row { justify-content: center; }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 500; background: rgba(24,22,20,.96); display: none; align-items: center; justify-content: center; }
.lightbox.open { display: flex; }
.lightbox img { max-width: min(92vw, 1400px); max-height: 84vh; object-fit: contain; }
.lightbox button { position: absolute; background: none; border: 0; color: #fff; cursor: pointer; font-size: 34px; width: 56px; height: 56px; line-height: 1; opacity: .8; }
.lightbox button:hover, .lightbox button:focus-visible { opacity: 1; }
.lightbox .lb-close { top: 12px; right: 12px; }
.lightbox .lb-prev { left: 12px; top: 50%; transform: translateY(-50%); }
.lightbox .lb-next { right: 12px; top: 50%; transform: translateY(-50%); }
.lightbox .lb-count { position: absolute; bottom: 18px; left: 0; right: 0; text-align: center; color: #bbb; font-size: 13px; letter-spacing: .12em; }

/* ---------- Kontakt ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-block { margin-bottom: 2.2rem; }
.contact-block h3 { font-size: 1.4rem; margin-bottom: .4em; }
.contact-block p { margin: 0; }
.hours { width: 100%; border-collapse: collapse; }
.hours td { padding: .5rem 0; border-bottom: 1px solid var(--line); }
.hours td:last-child { text-align: right; color: var(--ink); }
.map-consent {
  position: relative; aspect-ratio: 4 / 3; background: var(--cream-deep) center/cover no-repeat;
  display: flex; align-items: center; justify-content: center; text-align: center; padding: 2rem;
}
.map-consent::before { content: ""; position: absolute; inset: 0; background: rgba(246,242,236,.86); }
.map-consent > div { position: relative; max-width: 440px; }
.map-consent p { font-size: 14px; }
.map-consent iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; z-index: 1; }

/* ---------- Rechtstexte ---------- */
.legal { max-width: 760px; }
.legal h1 { margin-bottom: .8em; }
.legal h2 { font-size: 1.7rem; margin-top: 1.8em; margin-bottom: .4em; }
.legal h3 { font-size: 1.35rem; margin-top: 1.6em; margin-bottom: .35em; }
.legal h4 { font-family: var(--sans); font-size: 14px; font-weight: 600; letter-spacing: .04em; color: var(--ink); margin-top: 1.4em; margin-bottom: .3em; }
.legal p, .legal li { overflow-wrap: anywhere; hyphens: auto; }
.legal ul { padding-left: 1.2em; margin: .4em 0 1em; }
.legal li { margin-bottom: .35em; }
.legal li::marker { color: var(--copper); }
.legal a { color: var(--copper-dark); text-decoration: underline; text-underline-offset: 2px; }
.credit { margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.credit h2 { margin-top: 0; }
.credit-logo { display: inline-block; margin: .4rem 0 1rem; opacity: .85; transition: opacity .2s; }
.credit-logo:hover, .credit-logo:focus-visible { opacity: 1; }
.credit-logo img { width: 120px; height: auto; }
.policy-direkt { margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer { background: var(--dark); color: #b9b0a5; padding: 5rem 0 2rem; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 3rem; }
.footer-grid h2 { font-family: var(--sans); font-size: 12px; font-weight: 500; letter-spacing: .2em; text-transform: uppercase; color: #e9c9a8; margin-bottom: 1.2rem; }
.footer-grid p { margin: 0 0 1em; }
.footer-grid a:hover { color: #fff; }
.footer-logo img { height: 96px; width: auto; margin-bottom: 1.4rem; }
.footer-claim { font-family: var(--serif); font-style: italic; font-size: 1.35rem; color: #e6ddd1; max-width: 22ch; }
.footer-bottom { margin-top: 4rem; padding-top: 1.6rem; border-top: 1px solid rgba(255,255,255,.1); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; font-size: 13px; }
.footer-bottom nav a { margin-left: 1.4rem; }
.footer-bottom nav a:first-child { margin-left: 0; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr; } }

.to-top {
  position: fixed; right: 18px; bottom: 18px; z-index: 90; width: 46px; height: 46px; border-radius: 50%;
  border: 0; cursor: pointer; background: var(--copper); color: #fff; font-size: 18px;
  opacity: 0; pointer-events: none; transition: opacity .3s, background .2s;
}
.to-top:hover { background: var(--copper-dark); }
.to-top.visible { opacity: 1; pointer-events: auto; }

/* Einblenden beim Scrollen (nur wenn JS aktiv) */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }