:root {
  --bg-primary: #0A1628;
  --bg-card: #0F1F35;
  --bg-card-hover: #142A45;
  --accent: #00B4D8;
  --accent-bright: #48CAE4;
  --text-primary: #E8F4F8;
  --text-secondary: #7B8FA8;
  --success: #06D6A0;
  --warning: #FFB703;
  --danger: #EF476F;
  --border: rgba(0, 180, 216, 0.15);
  --glow: rgba(0, 180, 216, 0.2);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}

.logo:hover .logo-icon { opacity: 0.8; }

.nav { display: flex; gap: 24px; align-items: center; }

.nav a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s;
}

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

.hamburger { display: none; flex-direction: column; gap: 4px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: 0.3s; }

/* Hero */
.hero {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(72, 202, 228, 0.05) 0%, transparent 40%),
    linear-gradient(135deg, #0A1628 0%, #0F1F35 100%);
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 60px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><circle cx="20" cy="30" r="2" fill="%2300B4D8" opacity="0.3"/><circle cx="120" cy="70" r="1.5" fill="%2348CAE4" opacity="0.2"/><circle cx="160" cy="20" r="3" fill="%2300B4D8" opacity="0.15"/><circle cx="80" cy="80" r="1" fill="%2348CAE4" opacity="0.25"/></svg>');
  opacity: 0.06;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.hero-content { position: relative; z-index: 1; max-width: 700px; }

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #E8F4F8 0%, #00B4D8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
  display: inline-block;
}

.btn-primary { background: var(--accent); color: #0A1628; }
.btn-primary:hover { background: var(--accent-bright); box-shadow: 0 0 20px var(--glow); }

.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* Sektionen */
.section {
  padding: 80px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 48px;
  color: var(--text-primary);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-top: -32px;
  margin-bottom: 48px;
  font-size: 16px;
}

/* Leistungen */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 180, 216, 0.1);
}

.service-card .icon { font-size: 40px; margin-bottom: 16px; }
.service-card h3 { margin-bottom: 8px; font-size: 18px; }
.service-card p { color: var(--text-secondary); font-size: 14px; }

/* Shop Teaser */
.shop-teaser-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-placeholder {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  text-align: center;
  transition: transform 0.2s;
}

.product-placeholder:hover { transform: translateY(-4px); }

.product-placeholder .image {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
}

.product-placeholder .info { padding: 16px; }

.product-placeholder .info h4 {
  font-size: 14px;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.product-placeholder .info p { color: var(--accent); font-weight: 600; font-size: 16px; }

/* Kategorie-Farben */
.cat-filter { background: #0077B6; }
.cat-lighting { background: #FFB703; }
.cat-heating { background: #E63946; }
.cat-water { background: #06D6A0; }
.cat-co2 { background: #4CC9F0; }
.cat-soil { background: #2D6A4F; }
.cat-deco { background: #8D6E63; }
.cat-cleaning { background: #9C89B8; }
.cat-tank { background: #457B9D; }
.cat-tech { background: #6C757D; }

/* Beratung Teaser */
.consulting-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.consulting-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  transition: transform 0.2s;
}

.consulting-card:hover { transform: translateY(-4px); }

.consulting-card .icon { font-size: 48px; margin-bottom: 16px; }
.consulting-card h3 { margin-bottom: 8px; }
.consulting-card .price { color: var(--accent); font-size: 24px; font-weight: 700; margin: 12px 0; }
.consulting-card .price small { font-size: 14px; font-weight: 400; color: var(--text-secondary); }
.consulting-card p { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }

/* Wissen Teaser */
.wissen-teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.wissen-teaser-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s;
}

.wissen-teaser-card:hover { transform: translateY(-4px); }

.wissen-teaser-card .image {
  height: 140px;
  background: linear-gradient(135deg, #0F1F35, #142A45);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
}

.wissen-teaser-card .content { padding: 16px; }

.wissen-teaser-card .content .tag {
  font-size: 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  display: block;
}

.wissen-teaser-card .content h4 { font-size: 16px; margin-bottom: 8px; }
.wissen-teaser-card .content p { color: var(--text-secondary); font-size: 13px; }

/* Kontakt */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-form { display: flex; flex-direction: column; gap: 16px; }

.contact-form input,
.contact-form textarea {
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--accent); }

.contact-form textarea { min-height: 120px; resize: vertical; }

.contact-info h3 { margin-bottom: 16px; }
.contact-info p { color: var(--text-secondary); margin-bottom: 8px; }
.contact-info p strong { color: var(--text-primary); }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

.footer a { color: var(--accent); }

/* Responsive */
@media (max-width: 1023px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .shop-teaser-grid { grid-template-columns: repeat(3, 1fr); }
  .wissen-teaser-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
  .nav { display: none; }
  .hamburger { display: flex; }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    gap: 16px;
  }

  .services-grid { grid-template-columns: 1fr; }
  .shop-teaser-grid { grid-template-columns: 1fr; }
  .consulting-grid { grid-template-columns: 1fr; }
  .wissen-teaser-grid { grid-template-columns: 1fr; }

  .hero { min-height: 70vh; }
  .hero h1 { font-size: 2rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn { width: 100%; text-align: center; }
}