/* RC Carbon Lab – Stylesheet */

:root {
  --bg: #0b0b0c;
  --surface: #141416;
  --surface-2: #1c1d20;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f3f3f4;
  --muted: #a4a5ab;
  --accent: #ff5a1f;
  --accent-hover: #ff7a45;
  --cat: #3fb6ff;
  --mono: #8be04e;
  --hydro: #ffc53d;
  --radius: 10px;
  --header-h: 68px;
  --carbon: url("../img/carbon.svg");
  --font: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.no-scroll { overflow: hidden; }

img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { line-height: 1.1; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1, h2 { font-weight: 900; text-transform: uppercase; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .container { padding: 0 32px; } }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
/* "E-Mail" und Mailadressen nicht am Bindestrich umbrechen */
.nowrap, a[href^="mailto:"] { white-space: nowrap; }
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--accent); color: #000; padding: 8px 14px; border-radius: 6px; font-weight: 700;
}
.skip-link:focus { top: 12px; }

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

/* ---------- Carbon-Muster ---------- */
.section-carbon,
.site-header,
.site-footer,
.ph,
.cat-tile {
  background-color: #0d0d0f;
  background-image:
    linear-gradient(120deg, rgba(255,255,255,.05) 0%, rgba(255,255,255,0) 40%, rgba(255,255,255,.035) 70%, rgba(255,255,255,0) 100%),
    var(--carbon);
  background-size: 100% 100%, 16px 16px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s;
}
.site-header.is-scrolled { box-shadow: 0 8px 24px rgba(0,0,0,.5); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 24px; }

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 42px; height: auto; }
.brand-name { font-weight: 900; text-transform: uppercase; letter-spacing: .04em; font-size: 1.05rem; }

.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a {
  text-decoration: none; padding: 8px 12px; border-radius: 6px;
  font-weight: 600; font-size: .95rem; color: var(--muted);
}
.main-nav a:hover { color: var(--text); background: rgba(255,255,255,.06); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.lang-switch { display: flex; border: 1px solid var(--line-strong); border-radius: 6px; overflow: hidden; }
.lang-switch button {
  background: transparent; color: var(--muted); border: 0; cursor: pointer;
  font: 700 .8rem var(--font); padding: 7px 10px; letter-spacing: .05em;
}
.lang-switch button[aria-pressed="true"] { background: var(--accent); color: #000; }

.nav-toggle {
  display: none; background: transparent; border: 1px solid var(--line-strong);
  border-radius: 6px; width: 42px; height: 38px; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.nav-toggle .bar { display: block; width: 20px; height: 2px; background: var(--text); transition: transform .2s, opacity .2s; }
.nav-open .nav-toggle .bar:nth-child(2) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle .bar:nth-child(3) { opacity: 0; }
.nav-open .nav-toggle .bar:nth-child(4) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .header-actions { margin-left: auto; }
  .main-nav {
    position: fixed; left: 0; right: 0; top: var(--header-h);
    flex-direction: column; gap: 0; padding: 8px 16px 20px;
    background: rgba(11,11,12,.97); border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .2s, transform .2s, visibility .2s;
  }
  .nav-open .main-nav { transform: none; opacity: 1; visibility: visible; }
  .main-nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); border-radius: 0; font-size: 1.05rem; color: var(--text); }
}
@media (max-width: 420px) { .brand-name { display: none; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 22px; border-radius: 8px;
  font-weight: 700; text-decoration: none; letter-spacing: .01em;
  border: 2px solid transparent; transition: background .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border-color: var(--line-strong); color: var(--text); background: rgba(0,0,0,.25); }
.btn-ghost:hover { border-color: var(--text); }
.btn-lg { min-height: 54px; padding: 0 30px; font-size: 1.05rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 18px; }

.kicker {
  color: var(--accent); font-weight: 800; text-transform: uppercase;
  letter-spacing: .14em; font-size: .8rem; margin-bottom: .8em;
}
.lead { font-size: 1.12rem; color: #d6d6da; max-width: 60ch; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: min(88vh, 760px);
  display: flex; align-items: flex-end; overflow: hidden;
  padding: 120px 0 64px;
}
.hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center 60%;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(11,11,12,.35) 0%, rgba(11,11,12,.55) 45%, rgba(11,11,12,.96) 100%),
    linear-gradient(90deg, rgba(11,11,12,.85) 0%, rgba(11,11,12,.2) 70%);
}
.hero-content { position: relative; }
.hero h1 { font-size: clamp(2.6rem, 8vw, 5.4rem); margin-bottom: .3em; }
.hero h1 span { color: var(--accent); }
.hero-note { color: var(--muted); font-size: .92rem; margin: 0; }

/* ---------- Sektionen ---------- */
.section { padding: 80px 0; border-top: 1px solid var(--line); }
@media (max-width: 640px) { .section { padding: 56px 0; } }
.section-head { max-width: 720px; margin-bottom: 36px; }
.section-head p:last-child { color: var(--muted); }

/* ---------- Kategorien ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
@media (min-width: 700px) { .cat-grid { grid-template-columns: repeat(3, 1fr); } }
.cat-tile {
  position: relative; display: flex; flex-direction: column; gap: 6px;
  padding: 22px 20px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  text-decoration: none; transition: border-color .15s, transform .15s;
}
.cat-tile:hover { border-color: var(--accent); transform: translateY(-2px); }
.cat-icon svg { width: 44px; height: 44px; fill: none; stroke: var(--accent); stroke-width: 2.2; stroke-linejoin: round; }
.cat-name { font-weight: 800; font-size: 1.1rem; text-transform: uppercase; }
.cat-desc { color: var(--muted); font-size: .92rem; line-height: 1.45; }
.cat-count {
  position: absolute; top: 14px; right: 14px; min-width: 26px; height: 26px; padding: 0 6px;
  border-radius: 13px; background: rgba(255,255,255,.08); font-size: .8rem; font-weight: 700;
  display: grid; place-items: center; color: var(--muted);
}

/* ---------- Produkte ---------- */
.filter-bar {
  display: flex; gap: 8px; margin-bottom: 28px;
  overflow-x: auto; padding-bottom: 6px; scrollbar-width: thin;
}
.chip {
  flex: 0 0 auto; background: var(--surface); color: var(--muted);
  border: 1px solid var(--line-strong); border-radius: 999px;
  padding: 8px 16px; font: 600 .92rem var(--font); cursor: pointer;
}
.chip:hover { color: var(--text); }
.chip.is-active { background: var(--accent); border-color: var(--accent); color: #000; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.product-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: border-color .15s, transform .15s;
}
.product-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.product-card:has(.card-hit:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.card-hit { position: absolute; inset: 0; z-index: 2; background: transparent; border: 0; cursor: pointer; }
.card-hit:focus-visible { outline: none; }
.card-media { aspect-ratio: 4 / 3; background: var(--surface-2); }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-body { display: flex; flex-direction: column; flex: 1; padding: 16px 18px 18px; }
.card-cat { color: var(--accent); font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 4px; }
.card-body h3 { font-size: 1.12rem; margin-bottom: 6px; }
.card-desc { color: var(--muted); font-size: .93rem; margin-bottom: 12px; }
.card-foot { margin-top: auto; padding-top: 6px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.card-more { font-weight: 700; font-size: .9rem; color: var(--text); }
.price { font-weight: 900; font-size: 1.15rem; color: var(--text); white-space: nowrap; }
.card-foot .price { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.2; }
.price-shipping { font-size: .72rem; font-weight: 500; color: var(--muted); }
/* Versand-Link liegt über der klickbaren Kartenfläche */
.price-shipping a { position: relative; z-index: 3; }
.price-shipping a, .price-note a, .price-footnote a { color: inherit; text-decoration: underline; }
.price-shipping a:hover, .price-note a:hover, .price-footnote a:hover { color: var(--accent); }
.product-card:hover .card-more { color: var(--accent); }

.price-footnote { margin: 24px 0 0; color: var(--muted); font-size: .85rem; }

.badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.badge {
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  padding: 3px 8px; border-radius: 4px; border: 1px solid currentColor;
}
.badge-cat { color: var(--cat); }
.badge-mono { color: var(--mono); }
.badge-hydro { color: var(--hydro); }

.fits { list-style: none; padding: 0; margin: 0 0 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.fits li {
  font-size: .8rem; font-weight: 600; padding: 3px 9px; border-radius: 4px;
  background: rgba(255,255,255,.07); color: #d6d6da;
}
.fits li.more { background: none; color: var(--muted); }
.variant-picker { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 10px; }
.variant {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  padding: 8px 12px; border: 1px solid var(--line-strong); border-radius: 6px;
  background: rgba(255,255,255,.04); color: #d6d6da; font: inherit; font-size: .85rem; text-align: left;
  cursor: pointer; transition: border-color .15s, background .15s;
}
.variant strong { color: var(--text); font-size: .95rem; }
.variant:hover { border-color: var(--muted); }
.variant.is-active { border-color: var(--accent); background: rgba(255,255,255,.08); }
.variant:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.variant-more { align-self: center; color: var(--muted); }

/* Platzhalter, solange keine Produktfotos vorhanden sind */
.ph {
  width: 100%; height: 100%; min-height: 180px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--muted); font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em;
}
.ph svg { width: 34%; max-width: 96px; fill: none; stroke: rgba(255,255,255,.55); stroke-width: 1.8; stroke-linejoin: round; }
.ph span { background: rgba(0,0,0,.55); padding: 3px 10px; border-radius: 4px; }

/* ---------- Produkt-Details (Dialog) ---------- */
.modal {
  width: min(920px, calc(100% - 24px)); max-height: calc(100% - 24px);
  padding: 0; border: 1px solid var(--line-strong); border-radius: 14px;
  background: var(--surface); color: var(--text);
}
.modal::backdrop { background: rgba(0,0,0,.75); backdrop-filter: blur(3px); }
.modal-inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; }
.modal-media { background: var(--surface-2); min-height: 280px; }
.modal-media .ph { min-height: 320px; }
.modal-gallery { position: sticky; top: 0; }
.modal-main { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.modal-caption { margin: 0; padding: 8px 10px 0; min-height: 1.4em; color: var(--muted); font-size: .9rem; }
.modal-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; padding: 8px; }
.thumb {
  padding: 0; border: 2px solid transparent; border-radius: 6px; overflow: hidden;
  background: none; cursor: pointer; opacity: .65; transition: opacity .15s, border-color .15s;
}
.thumb:hover { opacity: 1; }
.thumb.is-active { border-color: var(--accent); opacity: 1; }
.thumb img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.modal-body .details { color: var(--muted); font-size: .95rem; }
.modal-body .details p { margin: 0 0 .75em; }
.modal-body .details ul { margin: 0 0 .75em; padding-left: 1.2em; }
.modal-body .details li { margin-bottom: .4em; }
.modal-body .details strong { color: var(--text); }
.price-box {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px;
  margin: 18px 0 4px; padding: 14px 16px; border: 1px solid var(--line-strong); border-radius: 8px;
  background: rgba(255,255,255,.03);
}
.price-box .price { font-size: 1.6rem; }
.availability { color: var(--text); font-size: .92rem; }
.price-note { flex-basis: 100%; color: var(--muted); font-size: .8rem; }
.product-note {
  margin: 16px 0 0; padding: 10px 14px; border-left: 3px solid var(--accent);
  background: rgba(255,90,31,.08); font-size: .92rem; border-radius: 0 6px 6px 0;
}
.modal-body { padding: 32px 28px 28px; }
.modal-body h3 { font-size: 1.6rem; font-weight: 900; text-transform: uppercase; }
.modal-body h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin: 20px 0 8px; }
.modal-body .btn { margin-top: 24px; }
.specs { width: 100%; border-collapse: collapse; font-size: .95rem; }
.specs th, .specs td { text-align: left; padding: 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.specs th { font-weight: 600; color: var(--muted); width: 45%; padding-right: 12px; }
.modal-close { position: absolute; top: 10px; right: 10px; z-index: 3; }
@media (max-width: 720px) {
  .modal-inner { grid-template-columns: 1fr; }
  .modal-media .ph { min-height: 200px; }
  .modal-body { padding: 24px 18px 22px; }
}

.icon-btn {
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line-strong);
  background: rgba(0,0,0,.6); color: var(--text); font-size: 1.7rem; line-height: 1;
  cursor: pointer; display: grid; place-items: center;
}
.icon-btn:hover { border-color: var(--text); }

/* ---------- Custom Designs ---------- */
.section-custom { background: linear-gradient(180deg, var(--bg), #111113); }
.custom-layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.custom-media { position: relative; border-radius: 14px; overflow: hidden; border: 1px solid var(--line-strong); }
.custom-media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.custom-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(11,11,12,.6));
}
.steps { list-style: none; padding: 0; margin: 28px 0 32px; counter-reset: step; display: grid; gap: 14px; }
.steps li {
  counter-increment: step; position: relative; padding: 4px 0 4px 56px; min-height: 42px;
  display: flex; flex-direction: column;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 0; width: 42px; height: 42px; border-radius: 8px;
  display: grid; place-items: center; font-weight: 900; color: var(--accent);
  border: 1px solid var(--line-strong);
  background: #0d0d0f var(--carbon); background-size: 12px 12px;
}
.steps strong { text-transform: uppercase; letter-spacing: .04em; }
.steps span { color: var(--muted); font-size: .95rem; }
@media (max-width: 860px) {
  .custom-layout { grid-template-columns: 1fr; gap: 32px; }
  .custom-media img { aspect-ratio: 16 / 10; }
}

/* ---------- Projekte ---------- */
.build-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (min-width: 1100px) { .build-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 560px) { .build-grid { grid-template-columns: 1fr; } }
.build-card {
  position: relative; padding: 0; border: 1px solid var(--line-strong); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; background: #000; color: var(--text); font: inherit; text-align: left;
}
.build-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .4s, opacity .2s; opacity: .9; }
.build-card:hover img { transform: scale(1.04); opacity: 1; }
.build-info {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 40px 16px 14px;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.85));
  display: flex; justify-content: space-between; align-items: flex-end; gap: 8px;
}
.build-info strong { text-transform: uppercase; font-weight: 800; }
.build-info span { color: var(--muted); font-size: .85rem; white-space: nowrap; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,.94);
  display: flex; align-items: center; justify-content: center; padding: 56px 64px;
}
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; max-width: 100%; max-height: 100%; display: flex; flex-direction: column; align-items: center; }
.lightbox img { max-width: 100%; max-height: calc(100vh - 140px); object-fit: contain; border-radius: 6px; }
.lightbox figcaption { margin-top: 12px; color: var(--muted); font-size: .9rem; }
.lb-close { position: absolute; top: 12px; right: 12px; }
.lb-prev, .lb-next { position: absolute; top: 50%; transform: translateY(-50%); font-size: 2.2rem; }
.lb-prev { left: 12px; }
.lb-next { right: 12px; }
@media (max-width: 640px) {
  .lightbox { padding: 56px 8px 72px; }
  .lb-prev, .lb-next { top: auto; bottom: 14px; transform: none; }
  .lb-prev { left: calc(50% - 56px); }
  .lb-next { right: calc(50% - 56px); }
}

/* ---------- Über ---------- */
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.features { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.features li {
  padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  border-top: 3px solid var(--accent); display: flex; flex-direction: column; gap: 6px;
}
.features strong { text-transform: uppercase; font-size: .95rem; letter-spacing: .03em; }
.features span { color: var(--muted); font-size: .93rem; line-height: 1.5; }
@media (max-width: 860px) { .about-layout { grid-template-columns: 1fr; gap: 28px; } }
@media (max-width: 480px) { .features { grid-template-columns: 1fr; } }

/* ---------- Kontakt ---------- */
.section-contact {
  position: relative; text-align: center;
  background:
    radial-gradient(ellipse at center, rgba(255,90,31,.14), transparent 65%),
    #0d0d0f var(--carbon);
  background-size: 100% 100%, 16px 16px;
}
.contact-box { max-width: 760px; }
.contact-box .lead { margin: 0 auto 28px; }
.contact-address { margin-top: 18px; color: var(--muted); }
.contact-address a { color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer-inner { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-inner img { width: 48px; height: auto; }
.footer-nav { display: flex; gap: 20px; }
.footer-nav a { color: var(--muted); text-decoration: none; font-size: .93rem; }
.footer-nav a:hover { color: var(--text); text-decoration: underline; }
.copyright { margin: 0 0 0 auto; color: var(--muted); font-size: .88rem; }
@media (max-width: 560px) {
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
  .copyright { margin: 0; }
}

/* ---------- Rechtstexte ---------- */
html:not([lang="de"]) [data-lang="de"],
html:not([lang="en"]) [data-lang="en"] { display: none; }

.legal { padding: 56px 0 80px; }
.legal .container { max-width: 820px; }
.legal h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: .6em; }
.legal h2 { font-size: 1.25rem; text-transform: none; font-weight: 800; margin-top: 2em; }
.legal h3 { font-size: 1.05rem; margin-top: 1.4em; }
.legal p, .legal li { color: #d6d6da; }
.legal a { color: var(--accent); }
.legal address { font-style: normal; margin-bottom: 1em; }
.legal .specs { margin-bottom: 1.2em; }
.legal .specs small { display: block; font-weight: 400; font-size: .8rem; }
.back-link { display: inline-block; margin-bottom: 28px; color: var(--muted); text-decoration: none; font-weight: 600; }
.back-link:hover { color: var(--text); }
.note {
  border: 1px dashed var(--hydro); color: var(--hydro); border-radius: 8px;
  padding: 12px 16px; font-size: .9rem; margin: 0 0 28px;
}