/* ============================================================
   BROM Haustechnik – Stylesheet
   Designsprache: Anthrazit, feine Linien, viel Weißraum
   ============================================================ */

:root {
  --anthracite: #4a4a4d;
  --anthracite-deep: #38383b;
  --anthracite-soft: #58585a;
  --ink: #2b2b2e;
  --paper: #f7f7f5;
  --paper-tint: #efefec;
  --white: #ffffff;
  --line: #d9d9d6;
  --line-dark: rgba(255, 255, 255, 0.18);
  --accent: #9a8f7e;
  --font-display: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Segoe UI", Arial, sans-serif;
  --radius: 6px;
  --shadow: 0 18px 50px -22px rgba(43, 43, 46, 0.35);
  --transition: 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

.container {
  width: min(1180px, 92vw);
  margin-inline: auto;
}

/* ---------- Typografie ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.15;
  color: inherit;
}

h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  letter-spacing: 0.01em;
}

h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.7rem);
  letter-spacing: 0.02em;
}

h3 {
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.lead {
  font-size: 1.08rem;
  color: rgba(43, 43, 46, 0.78);
  max-width: 36rem;
}

.accent { font-weight: 500; }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.34em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-head { margin-bottom: 3.2rem; }
.section-head h2 { max-width: 30ch; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition);
}

.site-header.scrolled { box-shadow: 0 8px 30px -18px rgba(43, 43, 46, 0.4); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.6rem;
}

.brand {
  display: block;
  text-decoration: none;
}

.header-logo {
  width: 144px;
  height: auto;
  display: block;
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: 1.7rem;
  letter-spacing: 0.42em;
  margin-right: -0.42em;
}

.brand-sub {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.52em;
  margin-right: -0.52em;
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.main-nav a {
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  padding-block: 0.3rem;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--anthracite);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.main-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.main-nav .nav-cta {
  border: 1px solid var(--anthracite);
  padding: 0.55rem 1.4rem;
  transition: background var(--transition), color var(--transition);
}

.main-nav .nav-cta::after { display: none; }

.main-nav .nav-cta:hover {
  background: var(--anthracite);
  color: var(--white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 26px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--transition), opacity var(--transition);
}

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-tint) 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 4rem;
  padding-block: 6.5rem;
}

.hero-text h1 { margin-bottom: 1.6rem; }
.hero-text .lead { margin-bottom: 2.4rem; }
.hero-text,
.hero-team { min-width: 0; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.8rem;
}

.btn {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95rem 2.1rem;
  border: 1px solid var(--anthracite);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--anthracite);
  color: var(--white);
}

.btn-primary:hover { background: var(--anthracite-deep); }

.btn-ghost { color: var(--anthracite); }

.btn-ghost:hover {
  background: var(--anthracite);
  color: var(--white);
}

.hero-values {
  display: flex;
  gap: 0;
  list-style: none;
}

.hero-values li {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(43, 43, 46, 0.6);
  padding-inline: 1.4rem;
  border-left: 1px solid var(--line);
}

.hero-values li:first-child { padding-left: 0; border-left: none; }

/* ---------- Intro-Band ---------- */

.intro-band {
  background: var(--anthracite);
  color: rgba(255, 255, 255, 0.85);
  padding-block: 4rem;
}

.intro-band p {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.6;
  max-width: 52rem;
}

.intro-band strong {
  font-weight: 500;
  color: var(--white);
}

/* ---------- Team ---------- */

.hero-team-title {
  margin-bottom: 1rem;
  text-align: center;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 340px));
  justify-content: center;
  gap: 2rem;
}

.team-card {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.team-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 22%;
}

.team-card figcaption {
  padding: 1.15rem 1.3rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-align: center;
}

.team-card figcaption span { display: block; }

.team-role {
  display: block;
  margin-top: 0.2rem;
  color: rgba(43, 43, 46, 0.62);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-team .team-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.hero-team .team-card figcaption {
  padding: 0.9rem 1rem;
  font-size: 1rem;
}

/* ---------- Sektionen ---------- */

.section { padding-block: 6.5rem; }

.section-dark {
  background: var(--anthracite-deep);
  color: var(--white);
}

.section-dark .lead { color: rgba(255, 255, 255, 0.7); }

.section-tinted { background: var(--paper-tint); }

/* ---------- Leistungen ---------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.4rem 2rem 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.service-icon {
  width: 56px;
  height: 56px;
  color: var(--anthracite);
  margin-bottom: 1.6rem;
}

.service-icon svg { width: 100%; height: 100%; }

.service-card h3 { margin-bottom: 0.9rem; }

.service-card p {
  font-size: 0.95rem;
  color: rgba(43, 43, 46, 0.75);
  margin-bottom: 2rem;
  flex-grow: 1;
}

.service-img {
  margin-inline: -2rem;
  width: calc(100% + 4rem);
  height: 200px;
  object-fit: cover;
  filter: saturate(0.92);
  transition: filter var(--transition), transform var(--transition);
}

.service-card:hover .service-img { filter: saturate(1); }

/* ---------- Galerie ---------- */

.gallery-groups {
  display: grid;
  gap: 4rem;
}

.gallery-group-title {
  margin-bottom: 1.25rem;
  color: var(--white);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
}

.gallery-group-title::before {
  display: inline-block;
  width: 2rem;
  height: 2px;
  margin-right: 0.8rem;
  background: var(--accent);
  content: "";
  vertical-align: middle;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 190px;
  grid-auto-flow: dense;
  gap: 1rem;
}

.gallery--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: 320px;
}

.gallery--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: 300px;
}

.g-item {
  overflow: hidden;
  border-radius: var(--radius);
  cursor: zoom-in;
}

.g-tall { grid-row: span 2; }
.g-wide { grid-column: span 2; }

.g-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.g-item:hover img { transform: scale(1.045); }

/* ---------- Einsatzgebiet ---------- */

.region-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
}

.region-text h2 {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-bottom: 1.4rem;
}

.route-line {
  flex: 0 0 90px;
  height: 1px;
  background: var(--anthracite);
  position: relative;
}

.route-line::before,
.route-line::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--anthracite);
  transform: translateY(-50%);
}

.route-line::before { left: 0; }
.route-line::after { right: 0; }

.region-media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Timeline ---------- */

.timeline {
  list-style: none;
  position: relative;
  max-width: 760px;
  padding-left: 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 130px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 3.4rem;
  padding-block: 1.6rem;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 130px;
  top: 2.25rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper-tint);
  border: 2px solid var(--anthracite);
  transform: translateX(-5px);
}

.timeline-year {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--anthracite);
  text-align: right;
  padding-top: 0.35rem;
}

.timeline-body h3 { margin-bottom: 0.4rem; }

.timeline-body p {
  font-size: 0.97rem;
  color: rgba(43, 43, 46, 0.75);
  max-width: 46ch;
}

/* ---------- Kontakt ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.contact-intro h2 { margin-bottom: 1.2rem; }

.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
}

.contact-card {
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
}

.contact-card h3 {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 0.8rem;
}

.contact-card p,
.contact-card a {
  color: var(--white);
  font-size: 1.02rem;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.contact-card a:hover { text-decoration: underline; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--anthracite-soft);
  color: rgba(255, 255, 255, 0.75);
  padding-block: 4rem 2.5rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  text-align: center;
}

.footer-logo { width: 200px; }

.footer-tagline {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.footer-nav {
  display: flex;
  gap: 2rem;
  margin-top: 0.6rem;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  text-decoration: none;
}

.footer-nav a:hover { text-decoration: underline; }

.footer-copy {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(28, 28, 30, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 3vmin;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 90vh;
  border-radius: var(--radius);
}

.lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.6rem;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--white);
  background: none;
  border: none;
  cursor: pointer;
}

/* ---------- Unterseiten (Impressum / Datenschutz) ---------- */

.legal-page {
  padding-block: 5rem;
  min-height: 55vh;
}

.legal-page .container { max-width: 760px; }

.legal-page h1 { margin-bottom: 2rem; font-size: clamp(2rem, 4vw, 2.8rem); }
.legal-page h2 { font-size: 1.3rem; margin: 2.2rem 0 0.8rem; font-weight: 500; }
.legal-page p { color: rgba(43, 43, 46, 0.8); margin-bottom: 0.8rem; }
.legal-page p a { color: inherit; }

.legal-page ul {
  margin: 0.4rem 0 1.2rem 1.4rem;
  color: rgba(43, 43, 46, 0.8);
}

.legal-page li { margin-bottom: 0.35rem; }

.placeholder-note {
  background: var(--paper-tint);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.4rem;
  font-size: 0.92rem;
  margin-bottom: 2.4rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 2.4rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--anthracite);
  text-decoration: none;
}

.back-link:hover { text-decoration: underline; }

/* ---------- Reveal-Animationen ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ---------- Responsive ---------- */

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; padding-block: 4.5rem; gap: 3rem; }
  .services-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .gallery--two { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 260px; }
  .gallery--three { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 240px; }
  .region-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .section { padding-block: 4.5rem; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 4vw 1.4rem;
    display: none;
  }

  .main-nav.open { display: flex; }

  .main-nav a {
    padding-block: 0.9rem;
    border-bottom: 1px solid var(--line);
  }

  .main-nav a::after { display: none; }

  .main-nav .nav-cta {
    border: none;
    padding: 0.9rem 0;
  }

  .main-nav .nav-cta:hover { background: none; color: var(--ink); }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

  .hero-values { flex-direction: column; gap: 0.5rem; }
  .hero-values li { border-left: none; padding-inline: 0; }

  .team-grid { grid-template-columns: minmax(0, 380px); }
  .hero-team .team-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .timeline::before { left: 5px; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.4rem; padding-left: 2rem; }
  .timeline-item::before { left: 5px; transform: translateX(-5px); }
  .timeline-year { text-align: left; padding-top: 0; }

  .gallery { grid-template-columns: 1fr; grid-auto-rows: 240px; }
  .gallery--two,
  .gallery--three { grid-template-columns: 1fr; grid-auto-rows: 280px; }
  .g-tall { grid-row: span 2; }
  .g-wide { grid-column: auto; }
}