/* ============================================================
   Firstgut Bedachungen — Schiefer, Abendhimmel, Regen
   ============================================================ */

:root {
  --schiefer: #23262B;
  --schiefer-tief: #1B1E22;
  --schiefer-linie: #33373E;
  --orange: #E8734A;
  --wolke: #EDEDEA;
  --wolke-dim: rgba(237, 237, 234, 0.62);
  --hairline: rgba(237, 237, 234, 0.14);
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --font-head: "Bricolage Grotesque", serif;
  --font-text: "Figtree", sans-serif;
  --bg-lift: 0; /* wird am Seitenende angehoben — es klart auf */
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--schiefer);
  color: var(--wolke);
  font-family: var(--font-text);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 1.6s var(--ease);
}

body.aufklaren { background-color: #2C3138; }

::selection { background: var(--orange); color: var(--schiefer-tief); }

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }

/* ------------------------------------------------------------
   Regen-Canvas — über allem, fängt keine Klicks
   ------------------------------------------------------------ */
#rain {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 40;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  #rain { display: none; }
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------------------
   Höhenmeter — rechts, Mono-Ziffern
   ------------------------------------------------------------ */
.altimeter {
  position: fixed;
  right: 1.75rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color: var(--wolke-dim);
  pointer-events: none;
}

.altimeter-ticks {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}

.altimeter-ticks span {
  display: block;
  width: 10px;
  height: 1px;
  background: var(--hairline);
  transition: background 0.4s var(--ease), width 0.4s var(--ease);
}

.altimeter-ticks span.on { background: var(--orange); width: 18px; }

.altimeter-read {
  display: flex;
  align-items: baseline;
  gap: 0.2rem;
  color: var(--wolke);
}

.altimeter-value {
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  min-width: 3.4ch;
  text-align: right;
}

.altimeter-unit { font-size: 0.7rem; color: var(--wolke-dim); }

.altimeter-label {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
}

@media (max-width: 767px) {
  .altimeter { right: 0.9rem; }
  .altimeter-ticks { display: none; }
}

/* ------------------------------------------------------------
   Header
   ------------------------------------------------------------ */
.site-head {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 2.5rem;
  mix-blend-mode: normal;
}

.wordmark {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.wordmark span { color: var(--orange); }

.site-head nav {
  display: flex;
  gap: 2rem;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.site-head nav a {
  text-decoration: none;
  color: var(--wolke-dim);
  transition: color 0.35s var(--ease);
}

.site-head nav a:hover { color: var(--wolke); }

.site-head nav a.nav-cta { color: var(--orange); }

@media (max-width: 767px) {
  .site-head { padding: 1.1rem 1.25rem; }
  .site-head nav { gap: 1.1rem; font-size: 0.76rem; }
  .site-head nav a:not(.nav-cta) { display: none; }
}

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(35, 38, 43, 0.55) 0%, rgba(35, 38, 43, 0) 30%, rgba(35, 38, 43, 0.15) 62%, var(--schiefer) 100%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding: 0 2.5rem 15dvh;
  max-width: 72rem;
}

.hero-kicker {
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--wolke-dim);
  margin-bottom: 1.5rem;
  animation: heroRise 1.2s var(--ease) 0.15s both;
}

.hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(4.5rem, 16vw, 12rem);
  line-height: 0.86;
  letter-spacing: -0.035em;
  animation: heroRise 1.2s var(--ease) 0.3s both;
}

.hero-sub {
  margin-top: 2rem;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: var(--wolke-dim);
  max-width: 34rem;
  animation: heroRise 1.2s var(--ease) 0.5s both;
}

.hero-link {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--orange);
  animation: heroRise 1.2s var(--ease) 0.65s both;
}

.hero-link-line {
  display: block;
  height: 1px;
  background: var(--orange);
  margin-top: 0.5rem;
  transform-origin: left;
  transition: transform 0.6s var(--ease);
}

.hero-link:hover .hero-link-line { transform: scaleX(0.35); }

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 2.5rem;
  z-index: 2;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--wolke-dim);
  writing-mode: vertical-rl;
  animation: heroRise 1.2s var(--ease) 0.9s both;
}

@keyframes heroRise {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-kicker, .hero h1, .hero-sub, .hero-link, .hero-scroll { animation: none; }
}

@media (max-width: 767px) {
  .hero-copy { padding: 0 1.25rem 12dvh; }
  .hero-scroll { left: auto; right: 1.25rem; display: none; }
  .br-desk { display: none; }
}

/* ------------------------------------------------------------
   Sektionen — Grundgerüst
   ------------------------------------------------------------ */
section { position: relative; }

.section-inner {
  max-width: 74rem;
  margin: 0 auto;
  padding: clamp(7.5rem, 14vh, 12.5rem) 2.5rem;
}

.section-mark {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.section-no {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  color: var(--orange);
  letter-spacing: 0.1em;
}

.section-rule {
  display: block;
  width: 4rem;
  height: 1px;
  background: var(--hairline);
}

.section-tag {
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--wolke-dim);
}

section h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 2rem;
}

.section-lede {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--wolke-dim);
  max-width: 36rem;
  margin-bottom: 5rem;
}

@media (max-width: 767px) {
  .section-inner { padding-left: 1.25rem; padding-right: 1.25rem; }
}

/* Scroll-Reveals */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ------------------------------------------------------------
   Leistungen — der Giebel
   ------------------------------------------------------------ */
.leistungen {
  background: var(--schiefer);
  /* Platz, damit der Giebel oben hineinragen kann */
  margin-top: clamp(4rem, 10vh, 8rem);
}

.gable-wrap {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(92vw, 78rem);
  transform: translateX(-50%);
  z-index: 3;
  pointer-events: none;
}

.gable {
  display: block;
  width: 100%;
  height: auto;
  transform: translateY(30%);
  will-change: transform;
  filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.45));
}

@media (prefers-reduced-motion: reduce) {
  .gable { transform: translateY(-46%) !important; }
}

.leistungen .section-inner {
  padding-top: clamp(11rem, 22vh, 17rem);
  text-align: center;
}

.leistungen .section-mark { justify-content: center; }

.leistungen .section-lede { margin-left: auto; margin-right: auto; }

.service-list {
  list-style: none;
  text-align: left;
  max-width: 56rem;
  margin: 0 auto;
  border-top: 1px solid var(--hairline);
}

.service {
  display: grid;
  grid-template-columns: 4rem 16rem 1fr;
  gap: 2rem;
  align-items: baseline;
  padding: 2.2rem 0.5rem;
  border-bottom: 1px solid var(--hairline);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease), padding-left 0.5s var(--ease);
}

.service:hover { padding-left: 1.25rem; }

.service-no {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  color: var(--orange);
}

.service h3 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  letter-spacing: -0.015em;
}

.service p {
  color: var(--wolke-dim);
  font-size: 0.95rem;
  max-width: 30rem;
}

@media (max-width: 767px) {
  .service {
    grid-template-columns: 3rem 1fr;
    gap: 0.4rem 1rem;
  }
  .service p { grid-column: 2; }
}

/* ------------------------------------------------------------
   Projekte
   ------------------------------------------------------------ */
.project-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.project { position: relative; }

.project img {
  width: 100%;
  filter: saturate(0.92);
  transition: filter 0.8s var(--ease);
}

.project:hover img { filter: saturate(1.05); }

.project-wide img { aspect-ratio: 16 / 9; object-fit: cover; }
.project-tall { margin-top: clamp(2rem, 8vh, 6rem); }
.project-tall img { aspect-ratio: 4 / 3; object-fit: cover; }

.project figcaption {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--hairline);
  margin-top: 1.1rem;
}

.project-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.05rem;
}

.project-meta {
  font-size: 0.8rem;
  color: var(--wolke-dim);
  letter-spacing: 0.04em;
}

@media (max-width: 767px) {
  .project-grid { grid-template-columns: 1fr; gap: 3rem; }
  .project-tall { margin-top: 0; }
}

/* ------------------------------------------------------------
   Betrieb
   ------------------------------------------------------------ */
.betrieb-cols {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-top: 3rem;
}

.betrieb-copy {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.7;
  color: var(--wolke-dim);
  max-width: 34rem;
}

.betrieb-zahlen {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.zahl {
  padding: 2rem 1.75rem;
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.zahl dt {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  color: var(--wolke);
}

.zahl dd {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--wolke-dim);
  margin-top: 0.35rem;
}

@media (max-width: 767px) {
  .betrieb-cols { grid-template-columns: 1fr; gap: 3rem; }
}

/* ------------------------------------------------------------
   Kontakt — es klart auf
   ------------------------------------------------------------ */
.kontakt {
  background: linear-gradient(180deg, rgba(237, 237, 234, 0) 0%, rgba(237, 237, 234, 0.04) 55%, rgba(232, 115, 74, 0.06) 100%);
}

.kontakt-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.kontakt-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.kontakt-form label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.kontakt-form label span {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--wolke-dim);
}

.kontakt-form input,
.kontakt-form textarea {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  color: var(--wolke);
  font-family: var(--font-text);
  font-size: 1.05rem;
  padding: 0.6rem 0;
  border-radius: 0;
  transition: border-color 0.4s var(--ease);
  resize: vertical;
}

.kontakt-form input:focus,
.kontakt-form textarea:focus {
  outline: none;
  border-bottom-color: var(--orange);
}

.kontakt-form textarea::placeholder { color: rgba(237, 237, 234, 0.3); }

.kontakt-form button {
  align-self: flex-start;
  margin-top: 0.5rem;
  background: var(--orange);
  color: var(--schiefer-tief);
  border: 0;
  font-family: var(--font-text);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 1.05rem 2.4rem;
  cursor: pointer;
  transition: transform 0.45s var(--ease), background 0.45s var(--ease);
}

.kontakt-form button:hover {
  background: var(--wolke);
  transform: translateY(-2px);
}

.kontakt-adresse {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-top: 0.4rem;
  color: var(--wolke-dim);
}

.adresse-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--wolke);
}

.kontakt-adresse a {
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  transition: border-color 0.4s var(--ease), color 0.4s var(--ease);
}

.kontakt-adresse a:hover { color: var(--orange); border-color: var(--orange); }

.adresse-hinweis {
  font-size: 0.85rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hairline);
}

@media (max-width: 767px) {
  .kontakt-cols { grid-template-columns: 1fr; gap: 3.5rem; }
}

/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */
.site-foot {
  border-top: 1px solid var(--hairline);
  background: var(--schiefer-tief);
}

.foot-inner {
  max-width: 74rem;
  margin: 0 auto;
  padding: 3.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.foot-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.foot-nav a {
  text-decoration: none;
  color: var(--wolke-dim);
  transition: color 0.35s var(--ease);
}

.foot-nav a:hover { color: var(--wolke); }

.foot-impressum {
  font-size: 0.75rem;
  color: rgba(237, 237, 234, 0.4);
  max-width: 46rem;
}

.foot-sixeyes {
  font-size: 0.75rem;
  color: rgba(237, 237, 234, 0.4);
}

.foot-sixeyes a { color: var(--orange); text-decoration: none; }

@media (max-width: 767px) {
  .foot-inner { padding: 2.5rem 1.25rem; }
}