/* ==========================================================================
   Komponenten
   ========================================================================== */
@layer components {

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--color-ink);
  --btn-fg: var(--color-text-on-dark);
  --btn-bd: transparent;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: var(--tap);
  padding: 0.7em 1.35em;
  border: 1.5px solid var(--btn-bd);
  border-radius: var(--radius-sm);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 650;
  letter-spacing: 0.005em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  transition:
    background-color var(--dur-1) var(--ease-out),
    border-color var(--dur-1) var(--ease-out),
    color var(--dur-1) var(--ease-out),
    transform var(--dur-2) var(--ease-spring),
    box-shadow var(--dur-2) var(--ease-out);
}
.btn .icon { width: 1.15em; height: 1.15em; }
.btn:active { transform: scale(0.97); transition-duration: 80ms; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn--sm { min-height: 40px; padding: 0.5em 1em; }
.btn--lg { min-height: 52px; padding: 0.85em 1.6em; font-size: var(--text-base); }
.btn--block { width: 100%; }

.btn--heat { --btn-bg: var(--color-heat-strong); --btn-fg: hsl(var(--white-hsl)); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--color-ink); --btn-bd: var(--color-border-strong); }
.btn--ghost-light { --btn-bg: hsl(var(--ink-hsl) / 0.28); --btn-fg: var(--color-text-on-dark); --btn-bd: hsl(var(--white-hsl) / 0.4); backdrop-filter: blur(6px); }
.btn--water { --btn-bg: var(--color-water-strong); --btn-fg: hsl(var(--white-hsl)); }
@media (hover: hover) {
  .btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
  .btn--heat:hover { --btn-bg: var(--color-heat-deep); }
  .btn--ghost:hover { --btn-bd: var(--color-ink); background: hsl(var(--ink-hsl) / 0.04); }
  .btn--ghost-light:hover { --btn-bd: hsl(var(--white-hsl) / 0.85); --btn-bg: hsl(var(--ink-hsl) / 0.45); }
  .btn--water:hover { --btn-bg: var(--color-water-deep); }
  .btn:disabled:hover { transform: none; box-shadow: none; }
}
.btn-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3) var(--space-5); }
.btn-row--center { justify-content: center; }

.icon-btn {
  display: inline-grid; place-items: center;
  width: var(--tap); height: var(--tap);
  border: 1.5px solid var(--color-border-strong); border-radius: 50%;
  background: transparent; color: var(--color-ink);
  transition: background-color var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.icon-btn:active { transform: scale(0.94); }
.icon-btn:disabled { opacity: 0.35; cursor: default; }
@media (hover: hover) { .icon-btn:not(:disabled):hover { border-color: var(--color-ink); background: hsl(var(--ink-hsl) / 0.05); } }

/* Pfeil-Link */
.link-arrow {
  display: inline-flex; align-items: center; gap: 0.45em;
  min-height: var(--tap);
  font-weight: 650; color: var(--color-ink); text-decoration: none;
}
.link-arrow .icon { width: 1.1em; height: 1.1em; transition: transform var(--dur-3) var(--ease-out); }
.tone-ink .link-arrow, .colleagues .link-arrow { color: inherit; }
@media (hover: hover) { .link-arrow:hover .icon, a:hover .link-arrow .icon, .area-card:hover .link-arrow .icon { transform: translateX(5px); } }
.link-arrow:focus-visible .icon { transform: translateX(5px); }

/* Chips (Schnellwahl im Hero) */
.chip-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  --dot: hsl(var(--chrome-hsl));
  display: inline-flex; align-items: center; gap: 0.55em;
  min-height: var(--tap); padding: 0.45em 1em;
  border: 1px solid hsl(var(--white-hsl) / 0.28); border-radius: var(--radius-pill);
  background: hsl(var(--ink-hsl) / 0.34); backdrop-filter: blur(8px);
  color: var(--color-text-on-dark); font-weight: 600; font-size: var(--text-sm); text-decoration: none;
  transition: background-color var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.chip__dot { width: 0.5em; height: 0.5em; border-radius: 50%; background: var(--dot); }
.chip--heat { --dot: var(--color-heat); }
.chip--water { --dot: var(--color-water); }
.chip:active { transform: scale(0.97); }
@media (hover: hover) { .chip:hover { background: hsl(var(--ink-hsl) / 0.6); border-color: hsl(var(--white-hsl) / 0.7); } }

/* ---------- Wortmarke ---------- */
.brand {
  position: relative;
  display: inline-grid; grid-template-columns: auto auto; align-items: end; column-gap: 0.5rem;
  padding-block: 0.35rem 0.6rem;
  color: var(--color-ink); text-decoration: none;
}
.brand__mk {
  font-family: var(--font-display); font-stretch: 125%; font-weight: 900;
  font-size: 1.6rem; line-height: 0.9; letter-spacing: -0.06em;
  display: inline-block; transform: skewX(-12deg);
}
.brand__name {
  font-family: var(--font-display); font-stretch: 100%; font-weight: 700;
  font-size: 0.8rem; letter-spacing: 0.06em; line-height: 1; padding-bottom: 0.1rem;
}
.brand__line { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 2px; background: var(--brand-line); }
.brand--light, .has-hero .site-header:not(.is-solid) .brand, .mobile-menu .brand { color: var(--color-text-on-dark); }
.brand--static { pointer-events: none; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
  height: var(--header-h);
  background: hsl(var(--paper-hsl) / 0.92);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--dur-3) var(--ease-out), background-color var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
}
.site-header.is-hidden { transform: translateY(-100%); }
.has-hero .site-header:not(.is-solid) { background: transparent; backdrop-filter: none; border-bottom-color: transparent; color: var(--color-text-on-dark); }
.has-hero .site-header:not(.is-solid)::before {
  content: ""; position: absolute; inset: 0 0 -2rem; z-index: -1; pointer-events: none;
  background: linear-gradient(hsl(var(--ink-hsl) / 0.55), transparent);
}
.site-header__inner { height: 100%; display: flex; align-items: center; gap: var(--space-5); }
.site-header .brand { margin-right: auto; }

.site-nav { display: none; }
.site-nav__list { display: flex; gap: var(--space-1); }
.site-nav__link {
  position: relative; display: inline-flex; align-items: center; min-height: var(--tap);
  padding-inline: var(--space-3);
  color: inherit; font-weight: 600; font-size: var(--text-sm); text-decoration: none;
}
.site-nav__link::after {
  content: ""; position: absolute; left: var(--space-3); right: var(--space-3); bottom: 8px; height: 2px; border-radius: 2px;
  background: var(--brand-line);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-3) var(--ease-out);
}
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
@media (hover: hover) { .site-nav__link:hover::after { transform: scaleX(1); } }

.site-header__actions { display: flex; align-items: center; gap: var(--space-3); }
.header-phone {
  display: none; align-items: center; gap: 0.45em; min-height: var(--tap);
  color: inherit; font-weight: 650; font-size: var(--text-sm); text-decoration: none; font-variant-numeric: tabular-nums;
}
.header-phone .icon { width: 1.05em; height: 1.05em; color: var(--color-heat); }
.header-cta { display: none; }
.menu-toggle, .menu-close {
  display: inline-grid; place-items: center; width: var(--tap); height: var(--tap);
  border: 0; border-radius: var(--radius-sm); background: transparent; color: inherit;
}
.menu-toggle .icon, .menu-close .icon { width: 1.6rem; height: 1.6rem; }

@media (min-width: 40em) { .header-cta { display: inline-flex; } }
@media (min-width: 64em) {
  .site-nav { display: block; }
  .menu-toggle { display: none; }
}
@media (min-width: 80em) { .header-phone { display: inline-flex; } }

/* Mobiles Vollbild-Menü */
.mobile-menu {
  width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; padding: 0 var(--gutter) calc(var(--space-6) + env(safe-area-inset-bottom));
  border: 0; background: var(--color-ink); color: var(--color-text-on-dark);
  flex-direction: column; gap: var(--space-6);
  overflow-y: auto; overscroll-behavior: contain;
}
.mobile-menu[open] { display: flex; }
.mobile-menu::backdrop { background: hsl(var(--ink-hsl) / 0.6); }
.mobile-menu__top { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.mobile-menu__list { display: grid; gap: var(--space-1); }
.mobile-menu__list a {
  display: flex; align-items: center; min-height: 3.5rem;
  font-family: var(--font-display); font-stretch: var(--display-stretch); font-weight: 800;
  font-size: var(--text-2xl); letter-spacing: var(--tracking-heading);
  color: inherit; text-decoration: none;
  border-bottom: 1px solid var(--color-border-dark);
}
.mobile-menu__list a[aria-current="page"] { color: hsl(var(--water-hsl)); }
.mobile-menu__actions { display: grid; gap: var(--space-3); margin-top: auto; }

/* ---------- Medien / Video ---------- */
.media { position: relative; width: 100%; height: 100%; overflow: hidden; background: var(--color-ink-raised); }
.media__picture, .media__poster, .media__video { position: absolute; inset: 0; width: 100%; height: 100%; }
.media__poster, .media__video { object-fit: cover; }
.media__video { opacity: 0; transition: opacity var(--dur-4) var(--ease-out); }
.media.is-playing .media__video { opacity: 1; }
.media__toggle {
  position: absolute; right: var(--space-4); bottom: var(--space-4); z-index: 3;
  display: inline-grid; place-items: center; width: var(--tap); height: var(--tap);
  border: 1px solid hsl(var(--white-hsl) / 0.4); border-radius: 50%;
  background: hsl(var(--ink-hsl) / 0.45); backdrop-filter: blur(6px); color: var(--color-text-on-dark);
  transition: background-color var(--dur-1) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.media__toggle:active { transform: scale(0.94); }
.media__toggle .icon { width: 1.1rem; height: 1.1rem; }
.media__toggle .icon--play { display: none; }
.media__toggle[aria-pressed="true"] .icon--play { display: block; }
.media__toggle[aria-pressed="true"] .icon--pause { display: none; }
@media (hover: hover) { .media__toggle:hover { background: hsl(var(--ink-hsl) / 0.75); } }

/* Bilder füllen ihren Rahmen */
picture:has(> .cover) { display: block; width: 100%; height: 100%; }

/* Einheitlicher Bild-Grade */
.media__poster, .media__video, .cover { filter: saturate(0.95) contrast(1.02); }

/* ---------- Hero ---------- */
.hero {
  position: relative; isolation: isolate;
  min-height: 100svh; min-height: max(36rem, 100svh);
  display: grid; grid-template-rows: 1fr auto;
  background: var(--color-ink); color: var(--color-text-on-dark);
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: -2; }
.hero__media .media__toggle { bottom: auto; top: calc(var(--header-h) + var(--space-3)); }
.hero__shade {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(90deg, hsl(var(--ink-hsl) / 0.88) 0%, hsl(var(--ink-hsl) / 0.62) 42%, hsl(var(--ink-hsl) / 0.12) 78%),
    linear-gradient(0deg, hsl(var(--ink-hsl) / 0.9) 0%, transparent 38%);
}
.hero__content {
  align-self: end;
  display: grid; gap: var(--space-5);
  padding-top: calc(var(--header-h) + var(--space-8));
  padding-bottom: var(--space-7);
}
.hero__title { display: grid; gap: var(--space-4); }
.hero__display {
  display: grid;
  font-size: var(--text-display); line-height: 0.98; letter-spacing: var(--tracking-display);
  font-weight: 800; font-stretch: 115%;
}
.hero__keyline {
  font-family: var(--font-body); font-stretch: 100%; font-weight: 600;
  font-size: var(--text-lg); letter-spacing: 0; line-height: 1.35;
  color: var(--color-text-on-dark);
}
.dot-heat { color: var(--color-heat); }
.dot-water { color: var(--color-water); }
.dot-steel { color: hsl(var(--chrome-hsl)); }
.hero__lead { max-width: 34rem; font-size: var(--text-lg); color: var(--color-text-on-dark-muted); }
.hero__ask { display: grid; gap: var(--space-3); }
.hero__ask-label { font-size: var(--text-xs); font-weight: 650; letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-text-on-dark-muted); }
.hero__ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero__trust { position: relative; padding-block: var(--space-4) var(--space-5); background: hsl(var(--ink-hsl) / 0.55); backdrop-filter: blur(6px); }
.trustbar { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); font-size: var(--text-sm); font-weight: 600; color: var(--color-text-on-dark); }
.trustbar { column-gap: var(--space-4); }
.trustbar li { display: inline-flex; align-items: center; gap: var(--space-4); }
.trustbar li + li::before { content: ""; flex: none; width: 4px; height: 4px; border-radius: 50%; background: hsl(var(--chrome-hsl)); }
.pipe-line { position: absolute; left: 0; right: 0; top: 0; height: var(--line); background: var(--brand-line); transform-origin: left; }

@media (max-width: 39.99em) {
  .hero__display { font-stretch: 104%; }
  .trustbar { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2) var(--space-4); }
  .trustbar li + li::before { display: none; }
  .hero__shade { background: linear-gradient(0deg, hsl(var(--ink-hsl) / 0.96) 0%, hsl(var(--ink-hsl) / 0.82) 48%, hsl(var(--ink-hsl) / 0.1) 82%); }
  .hero__media .media__poster, .hero__media .media__video { object-position: 64% 30%; }
  .hero__content { padding-top: calc(var(--header-h) + 6rem); gap: var(--space-3); padding-bottom: var(--space-4); }
  .hero__lead { font-size: var(--text-base); }
  .hero__trust { padding-bottom: calc(var(--space-5) + 4.5rem); } /* Platz für die Sticky-Bar */
  .hero__ctas .btn { flex: 1 1 100%; }
}

/* ---------- Bereiche (asymmetrisches Grid) ---------- */
.areas__grid { display: grid; gap: var(--space-4); }
.area-card {
  position: relative; isolation: isolate;
  display: grid; align-items: end;
  min-height: 30rem;
  border-radius: var(--radius-lg); overflow: hidden;
  background: var(--color-ink); color: var(--color-text-on-dark);
}
.area-card__media { position: absolute; inset: 0; z-index: -2; }
.area-card__media .media__poster, .area-card__media .media__video { transition: transform 900ms var(--ease-out), opacity var(--dur-4) var(--ease-out); }
.area-card::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(0deg, hsl(var(--ink-hsl) / 0.94) 0%, hsl(var(--ink-hsl) / 0.72) 42%, hsl(var(--ink-hsl) / 0.05) 80%);
}
.area-card__body { display: grid; gap: var(--space-3); padding: var(--space-6); }
.area-card__title { font-size: var(--text-2xl); }
.area-card__title a { color: inherit; text-decoration: none; }
.area-card__claim { color: var(--color-text-on-dark); font-weight: 600; max-width: 32ch; }
.area-card__list { display: grid; gap: var(--space-1); color: var(--color-text-on-dark-muted); font-size: var(--text-sm); }
.area-card__list li { display: flex; gap: var(--space-2); }
.area-card__list li::before { content: ""; flex: none; width: 10px; height: 1.5px; margin-top: 0.75em; background: currentColor; opacity: 0.6; }
.area-card .link-arrow { color: var(--color-text-on-dark); margin-top: var(--space-1); }
.area-card.tone-heat .link-arrow .icon { color: var(--color-heat); }
.area-card.tone-water .link-arrow .icon { color: var(--color-water); }
.stretched-link::after { content: ""; position: absolute; inset: 0; z-index: 2; border-radius: inherit; }
.area-card:focus-within { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.area-card .stretched-link:focus-visible { outline: none; }
@media (hover: hover) {
  .area-card:hover .media__poster, .area-card:hover .media__video { transform: scale(1.04); }
}

@media (max-width: 39.99em) {
  .area-card { min-height: 0; align-items: stretch; grid-template-rows: auto 1fr; }
  .area-card__media { position: relative; inset: auto; z-index: 0; aspect-ratio: 16 / 10; }
  .area-card::before { display: none; }
  .area-card__body { padding: var(--space-5); }
}
@media (min-width: 40em) {
  .areas__grid { grid-template-columns: 1fr 1fr; grid-template-areas: "heizung heizung" "sanitaer gas" "sanitaer klima"; }
  .area-card--heizung { grid-area: heizung; min-height: 28rem; }
  .area-card--sanitaer { grid-area: sanitaer; }
  .area-card--gas { grid-area: gas; min-height: 22rem; }
  .area-card--klima { grid-area: klima; min-height: 22rem; }
}
@media (min-width: 64em) {
  .areas__grid {
    grid-template-columns: 1fr 1fr 1.05fr;
    grid-template-rows: minmax(30rem, auto) minmax(24rem, auto);
    grid-template-areas: "heizung heizung sanitaer" "gas klima sanitaer";
  }
  .area-card--heizung .area-card__body { max-width: 36rem; }
}

/* ---------- Split-Layout ---------- */
.split { display: grid; gap: var(--space-7); align-items: center; }
.split__media { position: relative; border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4 / 3; background: var(--color-surface-sunk); }
.split__text { display: grid; gap: var(--space-5); justify-items: start; max-width: 36rem; }
@media (min-width: 64em) {
  .split { grid-template-columns: 1.1fr 1fr; gap: var(--space-9); }
  .split--reverse .split__media { order: 2; }
  .split__media { aspect-ratio: 5 / 4; }
}

.checklist { display: grid; gap: var(--space-3); }
.checklist li { display: grid; grid-template-columns: auto 1fr; gap: var(--space-3); align-items: start; }
.checklist .icon { width: 1.25rem; height: 1.25rem; margin-top: 0.2em; color: var(--color-heat-strong); }

/* ---------- Marken-Leiste (Marquee) ---------- */
.brands { margin-top: var(--section-y); display: grid; gap: var(--space-4); }
.brands__title { font-family: var(--font-body); font-stretch: 100%; font-size: var(--text-xs); font-weight: 650; letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-text-muted); }
.marquee {
  position: relative; overflow: hidden;
  border-block: 1px solid var(--color-border);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee:focus-visible { outline-offset: -2px; }
.marquee__track { display: flex; width: max-content; }
.marquee__item {
  padding: var(--space-5) clamp(var(--space-6), 5vw, var(--space-8));
  font-family: var(--font-display); font-stretch: 100%; font-weight: 700;
  font-size: var(--text-xl); letter-spacing: -0.01em; color: hsl(var(--steel-hsl));
  white-space: nowrap;
}

/* ---------- Klima-Teaser ---------- */
.klima-teaser { background: var(--color-cool); }
.klima-teaser .split__text { gap: var(--space-4); }
.klima-teaser__media { aspect-ratio: 4 / 3; }

/* Typenschild-Platte */
.plate {
  width: 100%;
  display: grid;
  border: 1.5px solid hsl(var(--ink-hsl) / 0.85); border-radius: var(--radius-md);
  background: var(--color-surface);
  position: relative; overflow: hidden;
}
.plate::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: var(--line); background: var(--brand-line); }
.plate__row { display: grid; grid-template-columns: 1fr auto; gap: 0 var(--space-4); padding: var(--space-4) var(--space-5); }
.plate__row + .plate__row { border-top: 1px solid var(--color-border); }
.plate dt { font-size: var(--text-xs); font-weight: 700; letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-text-muted); grid-column: 1 / -1; }
.plate dd { font-family: var(--font-display); font-stretch: 100%; font-weight: 700; font-size: var(--text-lg); letter-spacing: -0.01em; }
.plate .plate__meta { font-family: var(--font-body); font-weight: 600; font-size: var(--text-sm); color: var(--color-water-strong); align-self: center; }

/* ---------- Referenz-Streifen ---------- */
.refs-strip { overflow: hidden; }
.scroller-nav { display: none; gap: var(--space-2); }
@media (min-width: 48em) { .scroller-nav { display: flex; } }
.scroller {
  overflow-x: auto; overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: max(var(--gutter), calc(50% - var(--container) / 2));
  scrollbar-width: none;
}
.scroller::-webkit-scrollbar { display: none; }
.scroller__track {
  display: flex; gap: var(--space-4);
  padding-inline: max(var(--gutter), calc(50% - var(--container) / 2));
  width: max-content;
}
.ref-tile { width: min(78vw, 24rem); scroll-snap-align: start; }
.ref-tile__link { display: grid; gap: var(--space-3); color: inherit; text-decoration: none; }
.ref-tile__media { aspect-ratio: 3 / 4; border-radius: var(--radius-md); overflow: hidden; background: var(--color-surface-sunk); }
.ref-tile__media img { transition: transform 600ms var(--ease-out); }
.ref-tile__caption { display: grid; gap: 2px; }
.ref-tile__title { font-weight: 650; }
.ref-tile__brand { font-size: var(--text-sm); color: var(--color-text-muted); }
@media (hover: hover) { .ref-tile__link:hover img { transform: scale(1.04); } }
.ref-tile--more { width: min(60vw, 16rem); display: grid; }
.ref-tile__more {
  display: grid; place-content: center; justify-items: center; gap: var(--space-3); text-align: center;
  aspect-ratio: 3 / 4; border: 1.5px dashed var(--color-border-strong); border-radius: var(--radius-md);
  color: var(--color-ink); font-weight: 650; text-decoration: none;
  transition: border-color var(--dur-1) var(--ease-out), background-color var(--dur-1) var(--ease-out);
}
.ref-tile__more .icon { transition: transform var(--dur-3) var(--ease-out); }
@media (hover: hover) { .ref-tile__more:hover { border-color: var(--color-ink); background: var(--color-surface); } .ref-tile__more:hover .icon { transform: translateX(5px); } }

/* ---------- Ablauf mit Leitungslinie ---------- */
.steps__wrap { position: relative; }
.steps__pipe { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.steps__pipe path { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.steps__pipe-bg { stroke: var(--color-border-dark); }
.steps__list { position: relative; display: grid; gap: var(--space-7); }
.step { display: grid; grid-template-columns: auto 1fr; column-gap: var(--space-5); row-gap: var(--space-2); }
.step__node {
  grid-row: span 2;
  display: grid; place-items: center; width: 3.5rem; height: 3.5rem;
  border-radius: 50%; border: 2px solid var(--color-border-dark);
  background: var(--color-ink); color: var(--color-text-on-dark-muted);
  transition: border-color var(--dur-3) var(--ease-out), color var(--dur-3) var(--ease-out), transform var(--dur-3) var(--ease-spring);
}
.step__node .icon { width: 1.35rem; height: 1.35rem; }
.step.is-on .step__node { border-color: var(--step-color, var(--color-water)); color: var(--color-text-on-dark); transform: scale(1.06); }
.step:nth-child(1) { --step-color: hsl(var(--water-hsl)); }
.step:nth-child(2) { --step-color: hsl(150 30% 55%); }
.step:nth-child(3) { --step-color: hsl(30 70% 55%); }
.step:nth-child(4) { --step-color: hsl(var(--heat-hsl)); }
.step__title { font-size: var(--text-xl); align-self: end; }
.step p { max-width: 34ch; }
@media (min-width: 64em) {
  .steps__list { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
  .step { grid-template-columns: 1fr; row-gap: var(--space-4); }
  .step__node { grid-row: auto; }
}

/* ---------- Der Meister ---------- */
.master__grid { display: grid; gap: var(--space-7); align-items: center; }
.master__portrait { position: relative; width: min(100%, 22rem); aspect-ratio: 371 / 427; border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface-sunk); }
.master__portrait::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: var(--line); background: var(--brand-line); }
.master__text { display: grid; gap: var(--space-5); justify-items: start; max-width: 40rem; }
@media (min-width: 64em) { .master__grid { grid-template-columns: auto 1fr; gap: var(--space-9); } }

.seal {
  position: relative;
  display: grid; gap: 2px; padding: var(--space-4) var(--space-5) calc(var(--space-4) + 3px);
  border: 1.5px solid hsl(var(--ink-hsl) / 0.85); border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}
.seal::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: var(--line); background: var(--brand-line); }
.seal__top { display: inline-flex; align-items: center; gap: 0.5em; font-size: var(--text-xs); font-weight: 700; letter-spacing: var(--tracking-label); text-transform: uppercase; }
.seal__top::before { content: ""; width: 0.5em; height: 0.5em; border-radius: 50%; background: var(--color-heat); }
.seal__mid { font-family: var(--font-display); font-stretch: 100%; font-weight: 700; font-size: var(--text-base); letter-spacing: -0.01em; line-height: 1.25; }
.seal__bottom { font-size: var(--text-xs); color: var(--color-text-muted); letter-spacing: 0.02em; }

.motto p {
  font-family: var(--font-display); font-stretch: var(--display-stretch); font-weight: 800;
  font-size: var(--text-2xl); line-height: 1.15; letter-spacing: var(--tracking-heading); text-wrap: balance;
}

/* ---------- Für Fachkollegen ---------- */
.colleagues { background: var(--color-ink-raised); color: var(--color-text-on-dark); }
.colleagues__inner {
  display: grid; gap: var(--space-3); align-items: center;
  padding-block: var(--space-7);
}
.colleagues__title { font-size: var(--text-xl); }
.colleagues p { color: var(--color-text-on-dark-muted); max-width: 46ch; }
@media (min-width: 64em) {
  .colleagues__inner { grid-template-columns: 1fr auto; grid-template-rows: auto auto; column-gap: var(--space-7); }
  .colleagues .link-arrow { grid-column: 2; grid-row: 1 / span 2; }
}

/* ---------- Abschluss-CTA ---------- */
.closing { position: relative; isolation: isolate; overflow: hidden; background: var(--color-ink); color: var(--color-text-on-dark); text-align: center; }
.closing__bg { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; object-position: center 40%; }
.closing picture { position: absolute; inset: 0; z-index: -2; }
.closing__shade { position: absolute; inset: 0; z-index: -1; background: linear-gradient(hsl(var(--ink-hsl) / 0.8), hsl(var(--ink-hsl) / 0.9)); }
.closing__inner { display: grid; justify-items: center; gap: var(--space-6); padding-block: clamp(var(--space-9), 10vw, 10rem); }
.closing__title { font-size: var(--text-3xl); max-width: 20ch; }
.closing__motto { font-size: var(--text-lg); color: var(--color-text-on-dark-muted); }
.closing__motto::before { content: ""; display: block; width: 4rem; height: var(--line); margin: 0 auto var(--space-4); background: var(--brand-line); border-radius: 2px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-ink); color: var(--color-text-on-dark-muted); padding-top: var(--space-9); font-size: var(--text-sm); }
.site-footer a { color: var(--color-text-on-dark); text-decoration: none; }
@media (hover: hover) { .site-footer a:hover { color: hsl(var(--water-hsl)); } }
.site-footer__grid { display: grid; gap: var(--space-7); grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.site-footer__brand { display: grid; gap: var(--space-4); align-content: start; justify-items: start; }
.site-footer__claim { max-width: 28ch; }
.site-footer__title { font-family: var(--font-body); font-stretch: 100%; font-size: var(--text-xs); font-weight: 700; letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-text-on-dark); margin-bottom: var(--space-4); }
.site-footer__list { display: grid; gap: var(--space-1); }
.site-footer__list li { display: grid; }
.site-footer__list a { display: inline-flex; align-items: center; min-height: var(--tap); width: fit-content; }
.site-footer__key { font-size: var(--text-xs); color: hsl(var(--chrome-hsl) / 0.8); margin-bottom: -0.5rem; }
.site-footer__meta { margin-top: var(--space-3); }
.site-footer__bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--space-4);
  margin-top: var(--space-8); padding-block: var(--space-5) calc(var(--space-5) + 4.5rem);
  border-top: 1px solid var(--color-border-dark);
}
.site-footer__social { display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--tap); }
@media (min-width: 48em) { .site-footer__bottom { padding-bottom: var(--space-5); } }

/* ---------- Mobile Sticky-Bar ---------- */
.sticky-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-sticky);
  display: grid; grid-template-columns: 1fr 1.25fr; gap: var(--space-2);
  padding: var(--space-2) var(--space-3) calc(var(--space-2) + env(safe-area-inset-bottom));
  background: hsl(var(--paper-hsl) / 0.94); backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  transition: transform var(--dur-3) var(--ease-out);
}
.sticky-bar.is-hidden { transform: translateY(110%); }
.sticky-bar__btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 48px; border-radius: var(--radius-sm);
  font-weight: 650; text-decoration: none;
  transition: transform var(--dur-2) var(--ease-spring);
}
.sticky-bar__btn:active { transform: scale(0.97); }
.sticky-bar__btn--call { border: 1.5px solid var(--color-ink); color: var(--color-ink); }
.sticky-bar__btn--ask { background: var(--color-heat-strong); color: hsl(var(--white-hsl)); }
@media (min-width: 48em) { .sticky-bar { display: none; } }

/* ==========================================================================
   Unterseiten
   ========================================================================== */
main { padding-top: var(--header-h); }
.has-hero main { padding-top: 0; }

.page-hero {
  position: relative; isolation: isolate; overflow: hidden;
  background: var(--color-ink); color: var(--color-text-on-dark);
}
.page-hero__media { position: absolute; inset: 0; z-index: -2; }
.page-hero__media img, .page-hero__media .media { width: 100%; height: 100%; object-fit: cover; }
.page-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, hsl(var(--ink-hsl) / 0.92) 0%, hsl(var(--ink-hsl) / 0.7) 50%, hsl(var(--ink-hsl) / 0.25) 100%);
}
.page-hero__inner { display: grid; gap: var(--space-5); padding-block: clamp(var(--space-8), 8vw, var(--space-10)); max-width: 52rem; }
.page-hero__inner > .container { padding: 0; }
.page-hero h1 { font-size: var(--text-3xl); font-stretch: 115%; line-height: 1.04; letter-spacing: var(--tracking-display); }
.page-hero p { font-size: var(--text-lg); color: var(--color-text-on-dark-muted); max-width: 40rem; }
.page-hero--plain { background: var(--color-surface-sunk); color: var(--color-text); }
.page-hero--plain .page-hero__inner { padding-block: var(--space-8) var(--space-7); }
.page-hero--plain::before { display: none; }
.page-hero--plain p { color: var(--color-text-muted); }
.page-hero .pipe-line { top: auto; bottom: 0; }

.breadcrumb ol { display: flex; flex-wrap: wrap; gap: var(--space-2); font-size: var(--text-sm); }
.breadcrumb li { display: inline-flex; align-items: center; gap: var(--space-2); color: inherit; opacity: 0.85; }
.breadcrumb li + li::before { content: "/"; opacity: 0.5; }
.breadcrumb a { color: inherit; display: inline-flex; min-height: var(--tap); align-items: center; }

/* Sticky-Subnav */
.subnav {
  position: sticky; top: 0; z-index: calc(var(--z-header) - 1);
  background: hsl(var(--paper-hsl) / 0.94); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: top var(--dur-3) var(--ease-out);
}
body:not(.header-hidden) .subnav { top: var(--header-h); }
.subnav__list { display: flex; gap: var(--space-2); overflow-x: auto; scrollbar-width: none; padding-block: var(--space-2); }
.subnav__list::-webkit-scrollbar { display: none; }
.subnav a {
  --dot: hsl(var(--steel-hsl));
  display: inline-flex; align-items: center; gap: 0.5em; min-height: var(--tap); padding-inline: var(--space-4);
  border-radius: var(--radius-pill); white-space: nowrap;
  color: var(--color-ink); font-weight: 600; font-size: var(--text-sm); text-decoration: none;
  transition: background-color var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}
.subnav a::before { content: ""; width: 0.5em; height: 0.5em; border-radius: 50%; background: var(--dot); }
.subnav a.tone-heat { --dot: var(--color-heat); }
.subnav a.tone-water { --dot: var(--color-water); }
.subnav a[aria-current="true"] { background: var(--color-ink); color: var(--color-text-on-dark); }
@media (hover: hover) { .subnav a:not([aria-current="true"]):hover { background: hsl(var(--ink-hsl) / 0.06); } }

/* Leistungsblock */
.service-block { padding-block: var(--section-y); border-bottom: 1px solid var(--color-border); scroll-margin-top: calc(var(--header-h) + 4rem); }
.service-block.tone-water { background: var(--color-cool); }
.service-block__grid { display: grid; gap: var(--space-7); }
.service-block__media { position: relative; border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4 / 3; background: var(--color-ink); }
.service-block__gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin-top: var(--space-3); }
.service-block__gallery > div { aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden; background: var(--color-surface-sunk); }
.service-block__text { display: grid; gap: var(--space-5); align-content: start; }
.service-block__title { font-size: var(--text-3xl); }
.service-block__lead { font-size: var(--text-lg); max-width: 60ch; }
.service-list { display: grid; gap: 0; border-top: 1px solid var(--color-border-strong); }
.service-list li { display: grid; gap: var(--space-1); padding-block: var(--space-4); border-bottom: 1px solid var(--color-border); }
.service-list h3 { font-family: var(--font-body); font-stretch: 100%; font-size: var(--text-base); font-weight: 700; letter-spacing: 0; }
.service-list p { color: var(--color-text-muted); }
.service-block__cta { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-5); align-items: center; padding-top: var(--space-2); }
@media (min-width: 64em) {
  .service-block__grid { grid-template-columns: 1fr 1fr; gap: var(--space-9); align-items: start; }
  .service-block:nth-of-type(even) .service-block__media-col { order: 2; }
  .service-block__media-col { position: sticky; top: calc(var(--header-h) + 5rem); }
}

/* Definitionsbox (GEO) */
.definition {
  display: grid; gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-md); background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.definition h3 { font-size: var(--text-lg); font-stretch: 100%; }

/* Filter-Buttons */
.filter { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-6); }
.filter__btn {
  --dot: hsl(var(--steel-hsl));
  display: inline-flex; align-items: center; gap: 0.5em;
  min-height: var(--tap); padding-inline: var(--space-4);
  border: 1.5px solid var(--color-border-strong); border-radius: var(--radius-pill);
  background: transparent; color: var(--color-ink); font-weight: 600; font-size: var(--text-sm);
  transition: background-color var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.filter__btn::before { content: ""; width: 0.5em; height: 0.5em; border-radius: 50%; background: var(--dot); }
.filter__btn[data-tone="heat"] { --dot: var(--color-heat); }
.filter__btn[data-tone="water"] { --dot: var(--color-water); }
.filter__btn[data-tone="all"]::before { background: var(--brand-line); }
.filter__btn[aria-pressed="true"] { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-text-on-dark); }
.filter__btn:active { transform: scale(0.97); }
@media (hover: hover) { .filter__btn:not([aria-pressed="true"]):hover { border-color: var(--color-ink); } }

/* Leistungsübersicht (filterbar) */
.overview { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr)); }
.overview__item {
  display: grid; gap: var(--space-2); align-content: start;
  padding: var(--space-5);
  border-radius: var(--radius-md); background: var(--color-surface); border: 1px solid var(--color-border);
  color: inherit; text-decoration: none;
  transition: border-color var(--dur-1) var(--ease-out), transform var(--dur-3) var(--ease-out);
}
.overview__item h3 { font-family: var(--font-body); font-stretch: 100%; font-size: var(--text-base); font-weight: 700; letter-spacing: 0; line-height: 1.3; }
.overview__item.is-leaving { opacity: 0; transform: scale(0.96); transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out); }
@media (hover: hover) { .overview__item:hover { border-color: var(--color-border-strong); transform: translateY(-2px); } }

/* Galerie (Masonry) */
.gallery { columns: 1; column-gap: var(--space-4); }
@media (min-width: 40em) { .gallery { columns: 2; } }
@media (min-width: 64em) { .gallery { columns: 3; } }
.gallery__item { break-inside: avoid; margin-bottom: var(--space-4); }
.gallery__btn {
  display: grid; gap: var(--space-3); width: 100%; padding: 0; border: 0; background: none; text-align: left; color: inherit;
  border-radius: var(--radius-md);
}
.gallery__media { border-radius: var(--radius-md); overflow: hidden; background: var(--color-surface-sunk); }
.gallery__media img { width: 100%; transition: transform 600ms var(--ease-out); }
.gallery__caption { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: var(--space-2); padding-inline: 2px; }
.gallery__title { font-weight: 650; }
.gallery__brand { font-size: var(--text-sm); color: var(--color-text-muted); }
.gallery__item.is-leaving { opacity: 0; transform: scale(0.96); transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out); }
@media (hover: hover) { .gallery__btn:hover img { transform: scale(1.04); } }

/* Lightbox */
.lightbox {
  width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; padding: 0;
  border: 0; background: hsl(var(--ink-hsl) / 0.96); color: var(--color-text-on-dark);
  overscroll-behavior: contain;
}
.lightbox[open] { display: grid; grid-template-rows: auto 1fr auto; }
.lightbox::backdrop { background: transparent; }
.lightbox__bar { display: flex; justify-content: space-between; align-items: center; padding: var(--space-3) var(--gutter); }
.lightbox__count { font-variant-numeric: tabular-nums; color: var(--color-text-on-dark-muted); font-size: var(--text-sm); }
.lightbox__stage { position: relative; display: grid; place-items: center; min-height: 0; padding-inline: var(--gutter); touch-action: pan-y; }
.lightbox__stage picture, .lightbox__stage img { max-width: 100%; max-height: 100%; }
.lightbox__stage img { width: auto; height: auto; max-height: calc(100dvh - 10rem); object-fit: contain; border-radius: var(--radius-sm); }
.lightbox__caption { padding: var(--space-4) var(--gutter) calc(var(--space-5) + env(safe-area-inset-bottom)); text-align: center; }
.lightbox__caption strong { display: block; color: var(--color-text-on-dark); }
.lightbox__caption span { color: var(--color-text-on-dark-muted); font-size: var(--text-sm); }
.lightbox .icon-btn { color: var(--color-text-on-dark); border-color: hsl(var(--white-hsl) / 0.3); background: hsl(var(--ink-hsl) / 0.5); }
.lightbox__prev, .lightbox__next { position: absolute; top: 50%; translate: 0 -50%; z-index: 2; }
.lightbox__prev { left: var(--space-3); }
.lightbox__next { right: var(--space-3); }

/* Vorher/Nachher */
.ba { position: relative; overflow: hidden; border-radius: var(--radius-lg); aspect-ratio: 4 / 3; --pos: 50%; user-select: none; touch-action: pan-y; background: var(--color-surface-sunk); }
.ba picture, .ba img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ba__after { clip-path: inset(0 0 0 var(--pos)); }
.ba__handle { position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; translate: -1px 0; background: hsl(var(--white-hsl)); pointer-events: none; }
.ba__handle::after {
  content: ""; position: absolute; top: 50%; left: 50%; translate: -50% -50%;
  width: 2.75rem; height: 2.75rem; border-radius: 50%; background: hsl(var(--white-hsl)); box-shadow: var(--shadow-md);
}
.ba__range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.ba__range:focus-visible + .ba__handle::after { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.ba__tag { position: absolute; top: var(--space-3); padding: 0.2em 0.7em; border-radius: var(--radius-pill); background: hsl(var(--ink-hsl) / 0.7); color: var(--color-text-on-dark); font-size: var(--text-xs); font-weight: 650; }
.ba__tag--before { left: var(--space-3); }
.ba__tag--after { right: var(--space-3); }
.slot {
  display: grid; place-items: center; gap: var(--space-2); text-align: center;
  aspect-ratio: 16 / 7; padding: var(--space-6);
  border: 1.5px dashed var(--color-border-strong); border-radius: var(--radius-lg);
  color: var(--color-text-muted);
}

/* FAQ */
.faq { display: grid; border-top: 1px solid var(--color-border-strong); }
.faq details { border-bottom: 1px solid var(--color-border); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-4);
  min-height: 3.5rem; padding-block: var(--space-4);
  font-weight: 700; font-size: var(--text-lg); cursor: pointer; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icon { transition: transform var(--dur-3) var(--ease-out); }
.faq details[open] summary .icon { transform: rotate(180deg); }
.faq__answer { padding-bottom: var(--space-5); max-width: var(--measure); display: grid; gap: var(--space-3); }
.faq__answer p { color: var(--color-text-muted); }

/* Split-Erklärgrafik (Single/Multisplit) */
.split-diagram { display: grid; gap: var(--space-4); }
@media (min-width: 48em) { .split-diagram { grid-template-columns: 1fr 1fr; } }
.split-diagram figure { display: grid; gap: var(--space-4); padding: var(--space-5); border-radius: var(--radius-md); background: var(--color-surface); border: 1px solid var(--color-border); }
.split-diagram svg { width: 100%; height: auto; }
.split-diagram figcaption { display: grid; gap: var(--space-1); }
.split-diagram figcaption strong { font-family: var(--font-display); font-stretch: 100%; font-size: var(--text-lg); }
.split-diagram figcaption span { color: var(--color-text-muted); }

/* Zahlenreihe für Ablauf (Klima) – Schritte sind echte Reihenfolge */
.flow { display: grid; gap: var(--space-4); counter-reset: flow; }
@media (min-width: 48em) { .flow { grid-template-columns: repeat(4, 1fr); } }
.flow li { counter-increment: flow; display: grid; gap: var(--space-2); padding-top: var(--space-4); border-top: var(--line) solid var(--color-water); }
.flow li:last-child { border-top-color: var(--color-heat); }
.flow li::before { content: counter(flow); font-family: var(--font-display); font-weight: 800; font-size: var(--text-xl); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.flow h3 { font-size: var(--text-lg); }
.flow p { color: var(--color-text-muted); }

/* Werte (Über uns) */
.values { display: grid; gap: var(--space-6); }
@media (min-width: 48em) { .values { grid-template-columns: repeat(3, 1fr); } }
.values li { display: grid; gap: var(--space-2); }
.values h3 { font-size: var(--text-xl); }
.values p { color: var(--color-text-muted); }
.values li::before { content: ""; width: 2.5rem; height: var(--line); background: var(--brand-line); border-radius: 2px; margin-bottom: var(--space-3); }

.photo-row { display: grid; gap: var(--space-3); grid-template-columns: repeat(2, 1fr); }
@media (min-width: 48em) { .photo-row { grid-template-columns: 2fr 1fr 1fr; } }
.photo-row > div { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 3 / 4; background: var(--color-surface-sunk); }
.photo-row > div:first-child { grid-column: 1 / -1; aspect-ratio: 16 / 10; }
@media (min-width: 48em) { .photo-row > div:first-child { grid-column: auto; aspect-ratio: auto; } }

/* ==========================================================================
   Anfrage-Formular
   ========================================================================== */
.contact-layout { display: grid; gap: var(--space-8); }
@media (min-width: 64em) { .contact-layout { grid-template-columns: minmax(0, 1fr) 22rem; gap: var(--space-9); align-items: start; } }

.wizard { display: grid; gap: var(--space-6); }
.wizard__progress { display: none; }
.js .wizard__progress { display: flex; gap: var(--space-2); }
.wizard__progress li { flex: 1; display: grid; gap: var(--space-2); font-size: var(--text-xs); font-weight: 650; color: var(--color-text-muted); }
.wizard__progress li::before { content: ""; height: 4px; border-radius: 2px; background: var(--color-border); transition: background-color var(--dur-3) var(--ease-out); }
.wizard__progress li.is-done::before { background: var(--color-water); }
.wizard__progress li.is-current::before { background: var(--color-heat); }
.wizard__progress li.is-current { color: var(--color-ink); }
.wizard__progress .wizard__progress-label { display: none; }
@media (min-width: 40em) { .wizard__progress .wizard__progress-label { display: block; } }

.wizard__viewport { position: relative; }
.wizard__step { display: grid; gap: var(--space-5); margin: 0; padding: 0; border: 0; min-width: 0; }
.wizard__step + .wizard__step { margin-top: var(--space-8); }
.js .wizard__step + .wizard__step { margin-top: 0; }
.js .wizard__step:not(.is-active) { display: none; }
.wizard__legend { padding: 0; font-family: var(--font-display); font-stretch: var(--display-stretch); font-weight: 800; font-size: var(--text-2xl); letter-spacing: var(--tracking-heading); line-height: 1.15; }
.wizard__hint { color: var(--color-text-muted); margin-top: calc(var(--space-3) * -1); }
.wizard__nav { display: flex; justify-content: space-between; gap: var(--space-3); padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.wizard__nav .btn--next, .wizard__nav [type="submit"] { margin-left: auto; }
.no-js-only { display: block; }
.js .no-js-only { display: none; }
html:not(.js) .js-only { display: none; }

/* Anliegen-Kacheln (Bild-Chips) */
.choice-grid { display: grid; gap: var(--space-3); grid-template-columns: repeat(2, 1fr); }
@media (min-width: 48em) { .choice-grid { grid-template-columns: repeat(4, 1fr); } }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.choice__card {
  display: grid; grid-template-rows: auto 1fr; height: 100%;
  border: 1.5px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden;
  background: var(--color-surface); cursor: pointer;
  transition: border-color var(--dur-1) var(--ease-out), box-shadow var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.choice__img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--color-surface-sunk); }
.choice__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms var(--ease-out); }
.choice__label { --dot: hsl(var(--steel-hsl)); display: flex; align-items: center; gap: 0.5em; padding: var(--space-3); font-weight: 650; font-size: var(--text-sm); line-height: 1.25; }
.choice__label::before { content: ""; flex: none; width: 0.5em; height: 0.5em; border-radius: 50%; background: var(--dot); }
.choice--heat .choice__label { --dot: var(--color-heat); }
.choice--water .choice__label { --dot: var(--color-water); }
.choice input:checked + .choice__card { border-color: var(--color-ink); box-shadow: 0 0 0 1.5px var(--color-ink), var(--shadow-md); }
.choice input:focus-visible + .choice__card { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.choice__card:active { transform: scale(0.98); }
.choice__check {
  position: absolute; top: var(--space-2); right: var(--space-2);
  display: grid; place-items: center; width: 1.75rem; height: 1.75rem; border-radius: 50%;
  background: var(--color-ink); color: hsl(var(--white-hsl));
  opacity: 0; transform: scale(0.6); transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.choice__check .icon { width: 1rem; height: 1rem; }
.choice input:checked + .choice__card .choice__check { opacity: 1; transform: scale(1); }
@media (hover: hover) { .choice__card:hover { border-color: var(--color-border-strong); } .choice__card:hover img { transform: scale(1.04); } }

/* Felder */
.field-grid { display: grid; gap: var(--space-5); }
@media (min-width: 40em) { .field-grid--2 { grid-template-columns: 1fr 1fr; } .field--full { grid-column: 1 / -1; } }
.field { display: grid; gap: var(--space-2); align-content: start; }
.field__label { font-weight: 650; font-size: var(--text-sm); }
.field__label .req { color: var(--color-heat-strong); }
.field__label .opt { font-weight: 400; color: var(--color-text-muted); }
.field__help { font-size: var(--text-sm); color: var(--color-text-muted); }
.input, .select, .textarea {
  width: 100%; min-height: 52px; padding: 0.75em 0.9em;
  border: 1.5px solid var(--color-border-strong); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-text);
  font-size: max(16px, var(--text-base)); line-height: 1.4;
  transition: border-color var(--dur-1) var(--ease-out), box-shadow var(--dur-1) var(--ease-out);
}
.textarea { min-height: 9rem; resize: vertical; }
.select { appearance: none; padding-right: 2.5em; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314181c' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.8em center; background-size: 1.1em; }
.input::placeholder, .textarea::placeholder { color: hsl(var(--steel-hsl)); }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible { outline: none; border-color: var(--color-water-strong); box-shadow: 0 0 0 3px hsl(var(--water-hsl) / 0.35); }
@media (hover: hover) { .input:hover, .select:hover, .textarea:hover { border-color: var(--color-ink); } }
.field.has-error .input, .field.has-error .select, .field.has-error .textarea { border-color: var(--color-heat-strong); }
.field__error { display: flex; gap: var(--space-2); align-items: flex-start; font-size: var(--text-sm); font-weight: 600; color: var(--color-heat-strong); }
.field__error .icon { width: 1.1em; height: 1.1em; margin-top: 0.15em; }
.field__error:empty { display: none; }

.radio-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.radio-pill { position: relative; }
.radio-pill input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.radio-pill span {
  display: inline-flex; align-items: center; min-height: var(--tap); padding-inline: var(--space-4);
  border: 1.5px solid var(--color-border-strong); border-radius: var(--radius-pill);
  font-weight: 600; font-size: var(--text-sm); cursor: pointer; background: var(--color-surface);
  transition: background-color var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out);
}
.radio-pill input:checked + span { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-text-on-dark); }
.radio-pill input:focus-visible + span { outline: 2px solid var(--color-focus); outline-offset: 2px; }
@media (hover: hover) { .radio-pill span:hover { border-color: var(--color-ink); } }

.check { display: grid; grid-template-columns: auto 1fr; gap: var(--space-3); align-items: start; font-size: var(--text-sm); cursor: pointer; }
.check input { width: 1.375rem; height: 1.375rem; margin: 0.1em 0 0; }

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

/* Upload */
.dropzone {
  position: relative;
  display: grid; justify-items: center; gap: var(--space-3); text-align: center;
  padding: var(--space-7) var(--space-5);
  border: 2px dashed var(--color-border-strong); border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: border-color var(--dur-1) var(--ease-out), background-color var(--dur-1) var(--ease-out);
}
.dropzone.is-over { border-color: var(--color-water-strong); background: var(--color-cool); }
.dropzone .icon { width: 2rem; height: 2rem; color: var(--color-water-strong); }
.dropzone__title { font-weight: 700; font-size: var(--text-lg); }
.dropzone__meta { font-size: var(--text-sm); color: var(--color-text-muted); }
.dropzone input[type="file"] { max-width: 100%; }
.js .dropzone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.js .dropzone:focus-within { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.previews { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr)); }
.preview { position: relative; aspect-ratio: 1; border-radius: var(--radius-md); overflow: hidden; background: var(--color-surface-sunk); }
.preview img { width: 100%; height: 100%; object-fit: cover; }
.preview__file { display: grid; place-content: center; justify-items: center; gap: var(--space-1); height: 100%; padding: var(--space-2); text-align: center; font-size: var(--text-xs); color: var(--color-text-muted); word-break: break-all; }
.preview__remove {
  position: absolute; top: var(--space-1); right: var(--space-1);
  display: grid; place-items: center; width: var(--tap); height: var(--tap); border: 0; border-radius: 50%;
  background: hsl(var(--ink-hsl) / 0.72); color: hsl(var(--white-hsl));
  transition: background-color var(--dur-1) var(--ease-out), transform var(--dur-2) var(--ease-spring);
}
.preview__remove:active { transform: scale(0.92); }
.preview__remove .icon { width: 1.1rem; height: 1.1rem; }
@media (hover: hover) { .preview__remove:hover { background: var(--color-heat-strong); } }
.upload-count { font-size: var(--text-sm); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }

/* Zusammenfassung */
.summary { display: grid; border-top: 1px solid var(--color-border-strong); }
.summary__row { display: grid; gap: var(--space-1); padding-block: var(--space-3); border-bottom: 1px solid var(--color-border); }
@media (min-width: 40em) { .summary__row { grid-template-columns: 12rem 1fr auto; gap: var(--space-4); align-items: baseline; } }
.summary dt { font-size: var(--text-sm); font-weight: 650; color: var(--color-text-muted); }
.summary dd { white-space: pre-line; overflow-wrap: anywhere; }
.summary__edit { border: 0; background: none; padding: 0; min-height: var(--tap); color: var(--color-water-strong); font-weight: 650; font-size: var(--text-sm); text-decoration: underline; text-underline-offset: 0.2em; justify-self: start; }

/* Status / Erfolg */
.notice { display: grid; grid-template-columns: auto 1fr; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); }
.notice--error { background: hsl(var(--heat-hsl) / 0.08); color: var(--color-heat-deep); border: 1px solid hsl(var(--heat-hsl) / 0.35); }
.notice .icon { margin-top: 0.2em; }
.success { display: grid; justify-items: start; gap: var(--space-5); padding: var(--space-7) 0; }
.success__check { width: 4.5rem; height: 4.5rem; }
.success__check circle { fill: none; stroke: var(--color-water); stroke-width: 3; }
.success__check path { fill: none; stroke: var(--color-heat-strong); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.success h2 { font-size: var(--text-2xl); }

.btn.is-loading { pointer-events: none; }
.btn .spinner { width: 1.1em; height: 1.1em; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; }

/* Kontakt-Seitenleiste */
.contact-aside { display: grid; gap: var(--space-5); }
@media (min-width: 64em) { .contact-aside { position: sticky; top: calc(var(--header-h) + var(--space-5)); } }
.contact-card { display: grid; gap: var(--space-4); padding: var(--space-6); border-radius: var(--radius-lg); background: var(--color-ink); color: var(--color-text-on-dark); }
.contact-card h2 { font-size: var(--text-xl); }
.contact-card p { color: var(--color-text-on-dark-muted); font-size: var(--text-sm); }
.contact-ways { display: grid; gap: var(--space-2); }
.contact-ways a {
  display: grid; grid-template-columns: auto 1fr; gap: 0 var(--space-3); align-items: center;
  min-height: 3.5rem; padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm); background: hsl(var(--white-hsl) / 0.06);
  color: var(--color-text-on-dark); text-decoration: none; font-variant-numeric: tabular-nums;
  transition: background-color var(--dur-1) var(--ease-out);
}
.contact-ways a .icon { grid-row: span 2; color: hsl(var(--water-hsl)); }
.contact-ways small { font-size: var(--text-xs); color: var(--color-text-on-dark-muted); }
.contact-ways strong { overflow-wrap: anywhere; }
@media (hover: hover) { .contact-ways a:hover { background: hsl(var(--white-hsl) / 0.12); } }

/* Karte (Zwei-Klick) */
.map { position: relative; aspect-ratio: 4 / 3; border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface-sunk); border: 1px solid var(--color-border); }
.map__consent { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: var(--space-3); padding: var(--space-5); text-align: center; font-size: var(--text-sm); }
.map__consent p { color: var(--color-text-muted); max-width: 30ch; }
.map iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.map__pin { width: 2rem; height: 2rem; color: var(--color-heat-strong); }

/* Rechtstexte */
.legal { padding-block: var(--space-8) var(--section-y); }
.legal .prose h2 { font-size: var(--text-xl); }
.legal dl { display: grid; gap: var(--space-1) var(--space-5); }
@media (min-width: 40em) { .legal dl { grid-template-columns: 14rem 1fr; } }
.legal dt { font-weight: 650; }
.legal dd { margin-bottom: var(--space-3); }

.section--flush { padding-top: 0; }
.section + .section--flush { padding-top: 0; }
.gallery__media { display: block; }
.motto--xl p { font-size: var(--text-3xl); max-width: 22ch; color: var(--color-text-on-dark); }
.motto--xl p::after { content: ""; display: block; width: 6rem; height: var(--line); margin-top: var(--space-6); background: var(--brand-line); border-radius: 2px; }

.title-dot {
  display: inline-block; width: 0.32em; height: 0.32em; margin-right: 0.32em;
  border-radius: 50%; vertical-align: 0.18em; background: hsl(var(--steel-hsl));
}
.title-dot--heat { background: var(--color-heat); --dot: var(--color-heat); }
.title-dot--water { background: var(--color-water); --dot: var(--color-water); }
.title-dot--steel { background: hsl(var(--chrome-hsl)); }
.area-card .title-dot { box-shadow: 0 0 0 2px hsl(var(--ink-hsl) / 0.7); }
.area-card__title a { position: static; }
@media (hover: hover) { .area-card:hover .title-dot { animation: dot-pulse 700ms var(--ease-out) 1; } }

/* Leistungs-Index (typografisch, ohne Karten) */
.index { display: grid; gap: var(--space-7) var(--space-6); grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); }
.index__title { font-size: var(--text-xl); padding-bottom: var(--space-3); border-bottom: var(--line) solid var(--color-ink); }
.index__list li { border-bottom: 1px solid var(--color-border); }
.index__list a {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-3);
  min-height: var(--tap); padding-block: var(--space-3);
  color: var(--color-ink); text-decoration: none; font-weight: 600; line-height: 1.3;
}
.index__list .icon { width: 1rem; height: 1rem; flex: none; opacity: 0.4; transition: transform var(--dur-3) var(--ease-out), opacity var(--dur-2) var(--ease-out); }
@media (hover: hover) { .index__list a:hover .icon { transform: translateX(4px); opacity: 1; } .index__list a:hover span { text-decoration: underline; text-underline-offset: 0.2em; text-decoration-thickness: 1px; } }

} /* @layer components */