/* ============================================
   Gurr Elektrotechnik – Design Renewal 2026
   by Marvin Sonntag
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --rot: #e2001a;
  --rot-dunkel: #b80015;
  --rot-hell: #ff1a33;
  --dunkel: #1a1a2e;
  --dunkel-2: #16213e;
  --text: #2d2d3a;
  --text-leicht: #6b6b80;
  --grau-bg: #f5f5f7;
  --grau-border: #e0e0e6;
  --weiss: #ffffff;
  --schatten-sm: 0 1px 3px rgba(0,0,0,0.08);
  --schatten-md: 0 4px 20px rgba(0,0,0,0.08);
  --schatten-lg: 0 10px 40px rgba(0,0,0,0.12);
  --schatten-hover: 0 8px 30px rgba(226,0,26,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-breite: 1100px;
  --header-h: 80px;
}

*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
img { display:block; max-width:100%; height:auto; }
a { text-decoration:none; color:inherit; }
ul { list-style:none; }
button { border:none; background:none; cursor:pointer; font:inherit; }

body {
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:15px;
  line-height:1.7;
  color:var(--text);
  background:var(--weiss);
  -webkit-font-smoothing:antialiased;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
.footer { margin-top:auto; }

.container {
  width:100%;
  max-width:var(--max-breite);
  margin:0 auto;
  padding:0 24px;
}

/* ====== HEADER ====== */
.header {
  position:fixed; top:0; left:0; right:0;
  height:var(--header-h);
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(0,0,0,0.06);
  z-index:1000;
  transition:var(--transition);
}
.header.scrolled { box-shadow:var(--schatten-md); }
.header .container { display:flex; align-items:center; justify-content:space-between; height:100%; }
.header .logo img { height:45px; width:auto; transition:var(--transition); }
.header .logo:hover img { transform:scale(1.03); }

.nav-links { display:flex; align-items:center; gap:4px; }
.nav-links a {
  padding:8px 14px; font-size:14px; font-weight:500;
  color:var(--text); border-radius:var(--radius-sm); transition:var(--transition);
}
.nav-links a:hover { color:var(--rot); background:rgba(226,0,26,0.06); }
.nav-links a.active { color:var(--rot); background:rgba(226,0,26,0.08); font-weight:600; }
.nav-links .btn-kontakt {
  background:var(--rot); color:var(--weiss)!important;
  padding:8px 20px; font-weight:600; margin-left:8px; border-radius:var(--radius-sm);
}
.nav-links .btn-kontakt:hover { background:var(--rot-dunkel); transform:translateY(-1px); box-shadow:var(--schatten-hover); }

.hamburger { display:none; flex-direction:column; gap:5px; padding:8px; z-index:1001; }
.hamburger span { display:block; width:24px; height:2px; background:var(--text); border-radius:2px; transition:var(--transition); }
.hamburger.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

.mobile-nav {
  display:none; position:fixed; inset:0;
  background:var(--weiss); z-index:999;
  padding:120px 32px 40px; flex-direction:column; gap:4px; overflow-y:auto;
}
.mobile-nav.active { display:flex; }
.mobile-nav a { display:block; padding:14px 20px; font-size:18px; font-weight:500; color:var(--text); border-radius:var(--radius-sm); transition:var(--transition); }
.mobile-nav a:hover,.mobile-nav a.active { background:var(--grau-bg); color:var(--rot); }
.mobile-nav .btn-kontakt { background:var(--rot); color:var(--weiss)!important; text-align:center; margin-top:16px; font-weight:600; border-radius:var(--radius-md); }

/* ====== HERO ====== */
.hero {
  position:relative; min-height:85vh;
  display:flex; align-items:center;
  margin-top:var(--header-h); overflow:hidden;
}
.hero-bg { position:absolute; inset:0; background-size:cover; background-position:center; filter:brightness(0.35); }
.hero-content { position:relative; z-index:1; max-width:650px; color:var(--weiss); }
.hero-badge {
  display:inline-block; background:rgba(226,0,26,0.9); color:var(--weiss);
  padding:6px 16px; border-radius:50px; font-size:13px; font-weight:600;
  text-transform:uppercase; letter-spacing:0.08em; margin-bottom:24px;
}
.hero h1 {
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(36px,5vw,56px); font-weight:700; line-height:1.1;
  margin-bottom:20px; letter-spacing:-0.02em;
}
.hero p { font-size:18px; line-height:1.7; opacity:0.85; margin-bottom:32px; }
.hero-buttons { display:flex; gap:12px; flex-wrap:wrap; }

.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 28px; font-size:15px; font-weight:600;
  border-radius:var(--radius-sm); transition:var(--transition); cursor:pointer;
}
.btn-primary { background:var(--rot); color:var(--weiss); }
.btn-primary:hover { background:var(--rot-dunkel); transform:translateY(-2px); box-shadow:var(--schatten-hover); }
.btn-outline { background:transparent; color:var(--weiss); border:2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { border-color:var(--weiss); background:rgba(255,255,255,0.1); }

/* ====== PAGE HEADER ====== */
.page-header {
  margin-top:var(--header-h); padding:60px 0 40px; background:var(--dunkel); color:var(--weiss);
}
.page-header h1 { font-family:'Space Grotesk',sans-serif; font-size:clamp(28px,4vw,42px); font-weight:700; letter-spacing:-0.02em; }
.page-header .breadcrumb { margin-top:10px; font-size:14px; opacity:0.6; }
.page-header .breadcrumb a { opacity:0.8; transition:var(--transition); }
.page-header .breadcrumb a:hover { opacity:1; color:var(--rot-hell); }

/* ====== SECTIONS ====== */
.section { padding:80px 0; }
.section-title { text-align:center; margin-bottom:48px; }
.section-title h2 { font-family:'Space Grotesk',sans-serif; font-size:clamp(24px,3vw,36px); font-weight:700; color:var(--dunkel); letter-spacing:-0.02em; margin-bottom:12px; }
.section-title p { font-size:16px; color:var(--text-leicht); max-width:550px; margin:0 auto; }

/* ====== LEISTUNGEN GRID ====== */
.leistungen-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.leistung-card { position:relative; border-radius:var(--radius-md); overflow:hidden; aspect-ratio:1; cursor:pointer; transition:var(--transition); }
.leistung-card:hover { transform:translateY(-4px); box-shadow:var(--schatten-lg); }
.leistung-card img { width:100%; height:100%; object-fit:cover; transition:var(--transition); }
.leistung-card:hover img { transform:scale(1.05); }
.leistung-card .overlay {
  position:absolute; inset:0;
  background:linear-gradient(to top,rgba(0,0,0,0.75) 0%,rgba(0,0,0,0.1) 60%);
  display:flex; flex-direction:column; justify-content:flex-end;
  padding:24px; color:var(--weiss); transition:var(--transition);
}
.leistung-card:hover .overlay { background:linear-gradient(to top,rgba(226,0,26,0.85) 0%,rgba(0,0,0,0.2) 60%); }
.leistung-card .overlay h3 { font-family:'Space Grotesk',sans-serif; font-size:20px; font-weight:700; margin-bottom:4px; }
.leistung-card .overlay span { font-size:13px; opacity:0.8; }

/* ====== REFERENZ TABS ====== */
.referenz-section { padding:60px 0 80px; }
.referenz-tabs { display:flex; gap:8px; margin-bottom:32px; flex-wrap:wrap; }
.referenz-tab {
  padding:10px 24px; font-size:14px; font-weight:600;
  color:var(--text-leicht); background:var(--grau-bg);
  border:2px solid transparent; border-radius:var(--radius-sm);
  cursor:pointer; transition:var(--transition);
}
.referenz-tab:hover { color:var(--rot); border-color:rgba(226,0,26,0.2); }
.referenz-tab.active { color:var(--weiss); background:var(--rot); border-color:var(--rot); }

.referenz-content { display:none; }
.referenz-content.active { display:block; animation:fadeIn 0.4s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }

.referenz-info { display:flex; justify-content:space-between; align-items:flex-start; gap:24px; margin-bottom:32px; flex-wrap:wrap; }
.referenz-arbeiten h3 { font-family:'Space Grotesk',sans-serif; font-size:18px; font-weight:600; color:var(--dunkel); margin-bottom:12px; }
.referenz-arbeiten ul { display:flex; flex-direction:column; gap:6px; }
.referenz-arbeiten li { display:flex; align-items:center; gap:10px; font-size:14px; color:var(--text); }
.referenz-arbeiten li::before { content:''; width:6px; height:6px; background:var(--rot); border-radius:50%; flex-shrink:0; }

.referenz-link {
  display:inline-flex; align-items:center; gap:6px;
  color:var(--rot); font-size:14px; font-weight:600;
  padding:8px 16px; background:rgba(226,0,26,0.06);
  border-radius:var(--radius-sm); transition:var(--transition);
}
.referenz-link:hover { background:rgba(226,0,26,0.12); }

.galerie-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:12px; }
.galerie-grid a { display:block; border-radius:var(--radius-sm); overflow:hidden; aspect-ratio:4/3; transition:var(--transition); }
.galerie-grid a:hover { transform:scale(1.02); box-shadow:var(--schatten-md); }
.galerie-grid img { width:100%; height:100%; object-fit:cover; }

/* ====== TEXT SECTIONS ====== */
.text-section { padding:60px 0 80px; }
.text-card {
  background:var(--weiss); border:1px solid var(--grau-border);
  border-radius:var(--radius-lg); padding:48px; box-shadow:var(--schatten-sm);
}
.text-columns { display:grid; grid-template-columns:1fr 1fr; gap:48px; }
.text-card h2 { font-family:'Space Grotesk',sans-serif; font-size:24px; font-weight:700; color:var(--dunkel); margin-bottom:20px; }
.text-card h2 .accent { color:var(--rot); }
.text-card p { color:var(--text); margin-bottom:16px; line-height:1.8; }
.text-card strong { color:var(--dunkel); }

.check-list { display:flex; flex-direction:column; gap:10px; margin:16px 0; }
.check-list li { display:flex; align-items:flex-start; gap:12px; font-size:14px; line-height:1.6; }
.check-list li::before { content:'✓'; color:var(--rot); font-weight:700; font-size:16px; flex-shrink:0; margin-top:1px; }
.unterschrift-img { width:194px; height:75px; background:url(../images/sonstiges/unterschrift.jpg) no-repeat; background-size:contain; margin-top:20px; }

/* ====== KONTAKT ====== */
.kontakt-section { padding:60px 0 80px; }
.kontakt-grid { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
.kontakt-info h2 { font-family:'Space Grotesk',sans-serif; font-size:28px; font-weight:700; color:var(--dunkel); margin-bottom:16px; }
.kontakt-info p { color:var(--text-leicht); margin-bottom:24px; line-height:1.7; }
.kontakt-info .hinweis { font-size:13px; color:var(--text-leicht); background:var(--grau-bg); padding:16px; border-radius:var(--radius-sm); margin-top:20px; }

.kontakt-form {
  background:var(--weiss); border:1px solid var(--grau-border);
  border-radius:var(--radius-lg); padding:36px; box-shadow:var(--schatten-sm);
}
.form-group { margin-bottom:20px; }
.form-group label { display:block; font-size:13px; font-weight:600; color:var(--text); margin-bottom:6px; text-transform:uppercase; letter-spacing:0.05em; }
.form-group input,.form-group textarea {
  width:100%; padding:12px 16px; font-family:'Inter',sans-serif; font-size:15px;
  color:var(--text); background:var(--grau-bg); border:2px solid transparent;
  border-radius:var(--radius-sm); transition:var(--transition); outline:none;
}
.form-group input:focus,.form-group textarea:focus { border-color:var(--rot); background:var(--weiss); box-shadow:0 0 0 3px rgba(226,0,26,0.1); }
.form-group textarea { min-height:120px; resize:vertical; }
.form-group.error label { color:var(--rot); }
.form-group.error input,.form-group.error textarea { border-color:var(--rot); }

.checkbox-group { display:flex; gap:12px; align-items:flex-start; margin-bottom:24px; }
.checkbox-group input[type="checkbox"] { width:20px; height:20px; margin-top:2px; flex-shrink:0; accent-color:var(--rot); cursor:pointer; }
.checkbox-group label { font-size:13px; line-height:1.6; color:var(--text-leicht); cursor:pointer; }
.checkbox-group label a { color:var(--rot); font-weight:500; }

.btn-submit {
  width:100%; padding:14px 28px; background:var(--rot); color:var(--weiss);
  font-size:15px; font-weight:700; border:none; border-radius:var(--radius-sm);
  cursor:pointer; transition:var(--transition); text-transform:uppercase; letter-spacing:0.05em;
}
.btn-submit:hover { background:var(--rot-dunkel); transform:translateY(-2px); box-shadow:var(--schatten-hover); }

/* ====== LEGAL ====== */
.legal-section { padding:60px 0 80px; }
.legal-card {
  background:var(--weiss); border:1px solid var(--grau-border);
  border-radius:var(--radius-lg); padding:48px; box-shadow:var(--schatten-sm);
  max-width:800px; margin:0 auto;
}
.legal-card h2 { font-family:'Space Grotesk',sans-serif; font-size:22px; font-weight:700; color:var(--dunkel); margin:40px 0 16px; }
.legal-card h2:first-of-type { margin-top:0; }
.legal-card h3 { font-size:16px; font-weight:600; color:var(--dunkel); margin:24px 0 10px; }
.legal-card p { color:var(--text); margin-bottom:14px; line-height:1.8; }
.legal-card ul { list-style:disc; margin:10px 0 20px 24px; }
.legal-card ul li { padding:4px 0; line-height:1.7; }
.legal-card hr { border:none; border-top:1px solid var(--grau-border); margin:40px 0; }
.legal-card a { color:var(--rot); font-weight:500; transition:var(--transition); }
.legal-card a:hover { text-decoration:underline; }

/* ====== DANKE ====== */
.danke-section { padding:80px 0; text-align:center; }
.danke-card {
  max-width:500px; margin:0 auto; background:var(--weiss); border:1px solid var(--grau-border);
  border-radius:var(--radius-lg); padding:48px; box-shadow:var(--schatten-sm);
}
.danke-icon { width:64px; height:64px; background:rgba(226,0,26,0.1); border-radius:50%; display:flex; align-items:center; justify-content:center; margin:0 auto 20px; font-size:28px; }
.danke-card h2 { font-family:'Space Grotesk',sans-serif; font-size:24px; font-weight:700; color:var(--dunkel); margin-bottom:12px; }
.danke-card p { color:var(--text-leicht); margin-bottom:24px; }
.danke-card a { color:var(--rot); font-weight:600; }

/* ====== FOOTER ====== */
.footer { background:var(--dunkel); color:rgba(255,255,255,0.7); padding:48px 0 28px; }
.footer-content { display:flex; justify-content:space-between; align-items:flex-start; gap:32px; margin-bottom:32px; flex-wrap:wrap; }
.footer-brand h3 { font-family:'Space Grotesk',sans-serif; font-size:18px; font-weight:700; color:var(--weiss); margin-bottom:8px; }
.footer-brand p { font-size:14px; max-width:280px; }
.footer-links h4 { font-size:13px; font-weight:600; color:var(--weiss); text-transform:uppercase; letter-spacing:0.08em; margin-bottom:12px; }
.footer-links a { display:block; font-size:14px; padding:3px 0; transition:var(--transition); }
.footer-links a:hover { color:var(--weiss); }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.1); padding-top:24px; display:flex; justify-content:space-between; align-items:center; font-size:13px; flex-wrap:wrap; gap:12px; }
.footer-bottom a { transition:var(--transition); }
.footer-bottom a:hover { color:var(--weiss); }
.footer-legal { display:flex; gap:24px; }

/* ====== LIGHTBOX ====== */
.lightbox-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.92); z-index:10000; justify-content:center; align-items:center; backdrop-filter:blur(8px); }
.lightbox-overlay.active { display:flex; }
.lightbox-content { position:relative; max-width:90vw; max-height:90vh; }
.lightbox-content img { max-width:90vw; max-height:85vh; object-fit:contain; border-radius:var(--radius-sm); }
.lightbox-close { position:absolute; top:-40px; right:0; color:var(--weiss); font-size:28px; cursor:pointer; opacity:0.7; transition:var(--transition); padding:8px; background:none; border:none; }
.lightbox-close:hover { opacity:1; }
.lightbox-prev,.lightbox-next {
  position:absolute; top:50%; transform:translateY(-50%);
  color:var(--weiss); font-size:24px; cursor:pointer;
  background:rgba(255,255,255,0.1); border:none;
  width:48px; height:48px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  transition:var(--transition); z-index:10001;
}
.lightbox-prev:hover,.lightbox-next:hover { background:var(--rot); }
.lightbox-prev { left:16px; }
.lightbox-next { right:16px; }
.lightbox-counter { position:absolute; bottom:-30px; left:50%; transform:translateX(-50%); color:rgba(255,255,255,0.5); font-size:13px; }

/* ====== RESPONSIVE ====== */
@media(max-width:900px) {
  .nav-links { display:none; }
  .hamburger { display:flex; }
  .leistungen-grid { grid-template-columns:repeat(2,1fr); }
  .text-columns { grid-template-columns:1fr; gap:32px; }
  .kontakt-grid { grid-template-columns:1fr; gap:32px; }
  .footer-content { flex-direction:column; }
  .text-card,.legal-card { padding:32px; }
}

@media(max-width:600px) {
  :root { --header-h:64px; }
  .section { padding:50px 0; }
  .leistungen-grid { grid-template-columns:1fr; gap:16px; }
  .leistung-card { aspect-ratio:16/9; }
  .galerie-grid { grid-template-columns:1fr 1fr; gap:8px; }
  .hero { min-height:70vh; }
  .text-card,.legal-card { padding:24px; }
  .kontakt-form { padding:24px; }
  .footer-bottom { flex-direction:column; text-align:center; }
  .footer-legal { justify-content:center; }
}

.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
#weitere-bilder { display:none; }