/* ============================================================
   Alex Spenglerei – Stylesheet
   Palette: Weiss · Anthrazit · Schwarz · Gold (Akzent, passend zum Logo)
   Schrift: Manrope
   ============================================================ */

/* ---------- Variablen & Reset ---------- */
:root {
  --black: #0e0f11;
  --anthracite: #212429;
  --anthracite-light: #2c3037;
  --gray: #5b6066;
  --gray-light: #eceded;
  --off-white: #f7f7f5;
  --white: #ffffff;
  --gold: #d5a021;
  --gold-dark: #b3861a;
  --gold-soft: rgba(213, 160, 33, 0.12);

  --font: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(14, 15, 17, 0.10);
  --shadow-lg: 0 24px 60px rgba(14, 15, 17, 0.18);
  --transition: 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-h: 78px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font);
  color: var(--anthracite);
  background: var(--white);
  line-height: 1.7;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

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

/* ---------- Barrierefreiheit ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--gold); color: var(--black);
  padding: 0.6rem 1.2rem; border-radius: 0 0 8px 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- Typografie ---------- */
h1, h2, h3 { line-height: 1.2; font-weight: 800; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); margin-bottom: 1.2rem; color: var(--black); }
h3 { font-size: 1.15rem; font-weight: 700; }

.center { text-align: center; }
.light { color: var(--white); }

.section-kicker {
  display: inline-block;
  font-size: 0.8rem; font-weight: 800;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--gold-dark); margin-bottom: 0.8rem;
}
.section-kicker.center { display: block; text-align: center; }
.section-kicker.light { color: var(--gold); }

.section-lead {
  max-width: 640px; margin: 0 auto 3rem;
  color: var(--gray); font-size: 1.05rem;
}

.section { padding: clamp(4rem, 9vw, 7.5rem) 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem;
  padding: 0.95rem 1.9rem; border-radius: 999px;
  font-weight: 700; font-size: 0.98rem; font-family: var(--font);
  border: 2px solid transparent; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
              background var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(-1px); }

.btn-gold { background: var(--gold); color: var(--black); box-shadow: 0 8px 24px rgba(213, 160, 33, 0.35); }
.btn-gold:hover { background: var(--gold-dark); color: var(--white); box-shadow: 0 12px 30px rgba(213, 160, 33, 0.45); }

.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.7); }
.btn-outline:hover { background: var(--white); color: var(--black); border-color: var(--white); }

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

.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(14, 15, 17, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled { background: rgba(14, 15, 17, 0.97); box-shadow: 0 6px 30px rgba(0,0,0,0.35); }

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
}

.brand img { height: 52px; width: auto; border-radius: 6px; }

.main-nav { display: flex; align-items: center; gap: 1.8rem; }
.main-nav ul { display: flex; gap: 1.6rem; }

.nav-link {
  position: relative; color: rgba(255,255,255,0.85);
  font-weight: 600; font-size: 0.95rem; padding: 0.4rem 0;
  transition: color var(--transition);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 2px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--gold); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.btn-nav { padding: 0.65rem 1.4rem; font-size: 0.88rem; }

/* Sprachwahl DE / FR / EN */
.lang-switch {
  display: flex; align-items: center; gap: 2px;
  margin-left: 1.4rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px; padding: 3px;
}
.lang-btn {
  background: none; border: 0; cursor: pointer;
  font-family: var(--font); font-size: 0.78rem; font-weight: 800;
  letter-spacing: 0.06em; color: rgba(255,255,255,0.65);
  padding: 0.35rem 0.65rem; border-radius: 999px;
  transition: background var(--transition), color var(--transition);
}
.lang-btn:hover { color: var(--white); }
.lang-btn.active { background: var(--gold); color: var(--black); }

/* Hamburger */
.nav-toggle {
  display: none; flex-direction: column; gap: 6px;
  background: none; border: 0; cursor: pointer; padding: 8px; z-index: 110;
}
.nav-toggle span {
  width: 28px; height: 3px; background: var(--white); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  color: var(--white);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: url("images/hero.jpg") center 40% / cover no-repeat;
  animation: heroZoom 14s ease-out forwards;
}
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }

.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,
    rgba(14,15,17,0.72) 0%,
    rgba(14,15,17,0.55) 45%,
    rgba(14,15,17,0.82) 100%);
}

.hero-content { position: relative; z-index: 2; max-width: 780px; padding-top: var(--header-h); }

.hero-kicker {
  font-size: 0.85rem; font-weight: 800;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1.2rem;
}
.hero h1 { color: var(--white); margin-bottom: 1.4rem; }
.hero-sub {
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  color: rgba(255,255,255,0.88);
  max-width: 620px; margin-bottom: 2.2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.8rem; }

.hero-phone {
  display: inline-block;
  font-size: 1.35rem; font-weight: 800; letter-spacing: 0.04em;
  color: var(--gold);
  transition: color var(--transition);
}
.hero-phone:hover { color: var(--white); }

.scroll-hint {
  position: absolute; left: 50%; bottom: 2rem; transform: translateX(-50%);
  width: 28px; height: 46px; border: 2px solid rgba(255,255,255,0.5);
  border-radius: 999px; z-index: 2;
}
.scroll-hint span {
  position: absolute; left: 50%; top: 9px; transform: translateX(-50%);
  width: 4px; height: 9px; background: var(--gold); border-radius: 2px;
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot { 0%,100% { transform: translate(-50%, 0); opacity: 1; } 60% { transform: translate(-50%, 14px); opacity: 0; } }

/* ---------- Über uns ---------- */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem); align-items: center;
}

.about-media { position: relative; }
.about-media img {
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  aspect-ratio: 10 / 9; object-fit: cover; width: 100%;
}
.about-media::before {
  content: ""; position: absolute; inset: -18px auto auto -18px;
  width: 45%; height: 45%;
  border: 3px solid var(--gold); border-radius: var(--radius);
  z-index: -1;
}
.about-badge {
  position: absolute; right: -14px; bottom: -22px;
  background: var(--black); color: var(--white);
  border-radius: var(--radius); padding: 1.1rem 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; line-height: 1.3;
}
.about-badge strong { font-size: 1.5rem; color: var(--gold); }
.about-badge span { font-size: 0.85rem; color: rgba(255,255,255,0.8); }

.about-text p { color: var(--gray); margin-bottom: 1.1rem; }

.about-list { margin: 1.4rem 0 2rem; display: grid; gap: 0.65rem; }
.about-list li {
  position: relative; padding-left: 1.9rem; font-weight: 600; color: var(--anthracite);
}
.about-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--gold-dark); font-weight: 800;
}

/* ---------- Leistungen ---------- */
.services { background: var(--off-white); }

.services-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem;
}

.service-card {
  position: relative; background: var(--white);
  border-radius: var(--radius); padding: 2rem 1.6rem 1.8rem;
  box-shadow: 0 4px 18px rgba(14,15,17,0.05);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--gold-soft); color: var(--gold-dark);
  display: grid; place-items: center; margin-bottom: 1.2rem;
  transition: background var(--transition), color var(--transition);
}
.service-icon svg { width: 28px; height: 28px; }
.service-card:hover .service-icon { background: var(--gold); color: var(--black); }

.service-card h3 { margin-bottom: 0.6rem; color: var(--black); }
.service-card p { font-size: 0.93rem; color: var(--gray); }

/* ---------- Warum wir ---------- */
.why { background: linear-gradient(160deg, var(--black) 0%, var(--anthracite) 100%); }
.why h2 { color: var(--white); margin-bottom: 3rem; }

.why-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.8rem;
}
.why-item {
  display: flex; gap: 0.9rem; align-items: flex-start;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius); padding: 1.4rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.why-item:hover { background: rgba(213,160,33,0.09); border-color: rgba(213,160,33,0.4); transform: translateY(-4px); }

.check {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%;
  background: var(--gold); color: var(--black);
  display: grid; place-items: center; font-weight: 800;
}
.why-item h3 { color: var(--white); font-size: 1.02rem; margin-bottom: 0.25rem; }
.why-item p { color: rgba(255,255,255,0.65); font-size: 0.88rem; line-height: 1.55; }

/* ---------- Galerie ---------- */
.gallery-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 240px; gap: 1rem;
}
.gallery-item {
  position: relative; display: block; overflow: hidden;
  border-radius: var(--radius); cursor: zoom-in;
}
/* Grössere Kacheln für Abwechslung */
.gallery-item:nth-child(1), .gallery-item:nth-child(6) { grid-row: span 2; }
.gallery-item:nth-child(4), .gallery-item:nth-child(9) { grid-column: span 2; }

.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), filter 0.6s;
}
.gallery-item::after {
  content: attr(data-caption);
  position: absolute; inset: auto 0 0 0;
  padding: 2.4rem 1.1rem 0.9rem;
  background: linear-gradient(180deg, transparent, rgba(14,15,17,0.85));
  color: var(--white); font-size: 0.88rem; font-weight: 600;
  opacity: 0; transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
}
.gallery-item:hover img, .gallery-item:focus-visible img { transform: scale(1.07); }
.gallery-item:hover::after, .gallery-item:focus-visible::after { opacity: 1; transform: translateY(0); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 150;
  background: rgba(14,15,17,0.94);
  display: flex; align-items: center; justify-content: center;
  padding: 3.5rem 4.5rem;
  animation: lbFade 0.3s ease;
}
.lightbox[hidden] { display: none; }
@keyframes lbFade { from { opacity: 0; } to { opacity: 1; } }

.lightbox figure {
  max-width: 100%; max-height: 100%;
  display: flex; flex-direction: column; align-items: center; gap: 0.9rem;
}
.lightbox img {
  max-width: 100%; max-height: 78vh;
  border-radius: 10px; box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}
.lightbox figcaption { color: rgba(255,255,255,0.85); font-size: 0.95rem; }

.lb-close, .lb-prev, .lb-next {
  position: absolute; z-index: 5;
  background: rgba(255,255,255,0.08); color: var(--white);
  border: 1px solid rgba(255,255,255,0.15); border-radius: 50%;
  width: 52px; height: 52px; font-size: 1.4rem; cursor: pointer;
  display: grid; place-items: center;
  transition: background var(--transition), color var(--transition);
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: var(--gold); color: var(--black); }
.lb-close { top: 1.2rem; right: 1.2rem; font-size: 1.8rem; }
.lb-prev { left: 1.2rem; top: 50%; transform: translateY(-50%); }
.lb-next { right: 1.2rem; top: 50%; transform: translateY(-50%); }

/* ---------- Dachservice ---------- */
.roofservice { background: linear-gradient(160deg, var(--anthracite) 0%, var(--black) 100%); color: rgba(255,255,255,0.85); }
.roofservice h2 { color: var(--white); }
.roofservice-text p { color: rgba(255,255,255,0.75); margin-bottom: 1.2rem; }

.service-checklist { margin: 1.5rem 0 2.2rem; display: grid; gap: 0.8rem; }
.service-checklist li { position: relative; padding-left: 2rem; font-weight: 600; color: var(--white); }
.service-checklist li::before {
  content: ""; position: absolute; left: 0; top: 0.35em;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--gold);
}
.service-checklist li::after {
  content: "✓"; position: absolute; left: 4px; top: 0.05em;
  color: var(--black); font-size: 0.72rem; font-weight: 800;
}

.roofservice-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.roofservice-media img {
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 5; object-fit: cover; width: 100%;
}

/* ---------- Ablauf ---------- */
.process-grid {
  counter-reset: step;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.3rem;
  margin-top: 3rem;
}
.process-step {
  position: relative; background: var(--off-white);
  border-radius: var(--radius); padding: 1.8rem 1.4rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow); background: var(--white); }

.step-number {
  display: inline-block; font-size: 2.2rem; font-weight: 800;
  color: var(--gold); line-height: 1; margin-bottom: 0.9rem;
}
.process-step h3 { font-size: 1.02rem; margin-bottom: 0.5rem; color: var(--black); }
.process-step p { font-size: 0.88rem; color: var(--gray); line-height: 1.6; }

/* ---------- Kundenstimmen ---------- */
.testimonials { background: var(--off-white); }

.testimonial-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin-top: 3rem;
}
.testimonial {
  background: var(--white); border-radius: var(--radius);
  padding: 2rem 1.8rem; box-shadow: 0 4px 18px rgba(14,15,17,0.05);
  display: flex; flex-direction: column; gap: 1rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.stars { color: var(--gold); letter-spacing: 0.2em; font-size: 1.05rem; }
.testimonial blockquote { color: var(--gray); font-size: 0.97rem; flex: 1; }
.testimonial figcaption { display: flex; flex-direction: column; }
.testimonial figcaption strong { color: var(--black); }
.testimonial figcaption span { font-size: 0.85rem; color: var(--gray); }

/* ---------- Kontakt ---------- */
.contact-layout {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 5vw, 4rem);
}

.contact-info address { font-style: normal; margin-bottom: 1.6rem; }
.contact-info h3 { font-size: 1.4rem; color: var(--black); margin-bottom: 0.8rem; }
.contact-info p { color: var(--gray); margin-bottom: 0.7rem; }
.contact-info .label {
  display: block; font-size: 0.78rem; font-weight: 800;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold-dark);
  margin-top: 0.9rem;
}
.contact-info a { font-weight: 700; color: var(--anthracite); transition: color var(--transition); }
.contact-info a:hover { color: var(--gold-dark); }

.contact-buttons { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 1.8rem; }

.map-wrap {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
}
.map-wrap iframe { width: 100%; height: 100%; border: 0; }

/* Formular */
.contact-form {
  background: var(--off-white); border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.6rem);
  align-self: start;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-field { margin-bottom: 1.1rem; }

.contact-form label {
  display: block; font-size: 0.85rem; font-weight: 700;
  margin-bottom: 0.4rem; color: var(--anthracite);
}
.contact-form input, .contact-form textarea {
  width: 100%; font-family: var(--font); font-size: 1rem;
  padding: 0.85rem 1rem; color: var(--black);
  background: var(--white); border: 2px solid var(--gray-light);
  border-radius: 10px; resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--gold);
  box-shadow: 0 0 0 4px var(--gold-soft);
}

.form-status { min-height: 1.4rem; font-weight: 700; font-size: 0.92rem; margin-bottom: 0.6rem; }
.form-status.ok { color: #1d7a3d; }
.form-status.error { color: #b3261e; }

.form-note { font-size: 0.8rem; color: var(--gray); margin-top: 0.9rem; text-align: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--black); color: rgba(255,255,255,0.75); }

.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem; padding: 4rem 0 3rem;
}
.footer-brand img { height: 64px; width: auto; border-radius: 6px; margin-bottom: 1.1rem; }
.footer-brand p { font-size: 0.93rem; max-width: 300px; margin-bottom: 1.2rem; }

.footer-social {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-weight: 700; color: var(--gold); font-size: 0.92rem;
  transition: color var(--transition);
}
.footer-social:hover { color: var(--white); }

.site-footer h3 {
  color: var(--white); font-size: 0.95rem; text-transform: uppercase;
  letter-spacing: 0.14em; margin-bottom: 1.1rem;
}
.footer-links ul { display: grid; gap: 0.55rem; }
.footer-links a, .footer-contact a {
  font-size: 0.95rem; transition: color var(--transition);
}
.footer-links a:hover, .footer-contact a:hover { color: var(--gold); }
.footer-contact p { margin-bottom: 0.6rem; font-size: 0.95rem; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 1.3rem 0; }
.footer-bottom-inner {
  display: flex; flex-wrap: wrap; gap: 0.8rem;
  align-items: center; justify-content: space-between;
  font-size: 0.85rem;
}
.legal-links { display: flex; gap: 1.4rem; }
.legal-link {
  background: none; border: 0; cursor: pointer;
  color: rgba(255,255,255,0.75); font-family: var(--font); font-size: 0.85rem;
  transition: color var(--transition);
}
.legal-link:hover { color: var(--gold); }

/* ---------- Modale ---------- */
.modal {
  position: fixed; inset: 0; z-index: 160;
  background: rgba(14,15,17,0.7);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  animation: lbFade 0.25s ease;
}
.modal[hidden] { display: none; }

.modal-box {
  position: relative; background: var(--white);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  max-width: 640px; max-height: 82vh; overflow-y: auto;
  padding: 2.4rem;
}
.modal-box h2 { font-size: 1.5rem; margin-bottom: 1.2rem; }
.modal-box p { color: var(--gray); margin-bottom: 1rem; font-size: 0.95rem; }
.modal-box a { color: var(--gold-dark); font-weight: 700; }

.modal-close {
  position: absolute; top: 0.9rem; right: 0.9rem;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--off-white); border: 0; cursor: pointer;
  font-size: 1.4rem; color: var(--anthracite);
  transition: background var(--transition), color var(--transition);
}
.modal-close:hover { background: var(--gold); color: var(--black); }

/* ---------- Zurück nach oben ---------- */
.to-top {
  position: fixed; right: 1.4rem; bottom: 1.4rem; z-index: 90;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--gold); color: var(--black);
  border: 0; cursor: pointer; font-size: 1.25rem; font-weight: 800;
  box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background var(--transition);
}
.to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--gold-dark); color: var(--white); }

/* ---------- Scroll-Animation ---------- */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); grid-auto-rows: 220px; }
  .gallery-item:nth-child(4), .gallery-item:nth-child(9) { grid-column: span 1; }
  .testimonial-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Mobile Navigation + Layout */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }

  /* Sprachwahl bleibt neben dem Hamburger sichtbar – auch bei offenem Menü */
  .lang-switch {
    position: relative; z-index: 110;
    margin-left: auto; margin-right: 0.9rem;
  }

  .main-nav {
    position: fixed; inset: 0; z-index: 105;
    background: rgba(14, 15, 17, 0.98);
    flex-direction: column; justify-content: center; gap: 2.2rem;
    opacity: 0; visibility: hidden; transform: translateY(-14px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .main-nav ul { flex-direction: column; align-items: center; gap: 1.6rem; }
  .nav-link { font-size: 1.25rem; }

  .split { grid-template-columns: 1fr; }
  .about-media { max-width: 520px; margin-inline: auto; }
  .roofservice-media { order: -1; max-width: 520px; margin-inline: auto; }

  .contact-layout { grid-template-columns: 1fr; }
}

/* Smartphone */
@media (max-width: 640px) {
  :root { --header-h: 68px; }
  .brand img { height: 44px; }

  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 170px; }
  .footer-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }

  .lightbox { padding: 4.5rem 0.8rem 2rem; }
  .lb-prev { left: 0.5rem; }
  .lb-next { right: 0.5rem; }
  .lb-prev, .lb-next { width: 44px; height: 44px; }

  .about-badge { right: 8px; bottom: -18px; padding: 0.9rem 1.2rem; }
}