:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --text: #1f2a37;
  --muted: #4b5563;
  --accent: #0a69c6;
  --accent-light: #0284c7;
  --border: #e5e7eb;
}

body {
  margin: 0;
  font-family: system-ui, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg-soft);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: var(--bg);
  padding: 60px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.logo {
  max-width: 360px; /* größer */
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border: none;
  box-shadow: none; /* kein Schatten */
  filter: none;     /* kein Drop-Shadow */
}

/* Navigation */
.main-nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.main-nav .container {
  display: flex;
  justify-content: center;
  gap: 30px;
  padding: 14px 0;
}

.main-nav a {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  padding: 8px 14px;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

/* Sections */
.section-box {
  background: var(--bg);
  margin: 40px 0;
  padding: 40px 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  border-radius: 12px;
}

.section-box h2 {
  text-align: center;
  color: var(--accent);
  margin-bottom: 30px;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-soft);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

.icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.card h3 {
  margin-top: 0;
  color: var(--accent);
}

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

.contact-info {
  background: var(--bg-soft);
  padding: 20px;
  border-radius: 10px;
}

/* Form */
form label {
  display: block;
  margin-top: 12px;
  font-weight: 600;
}

input, textarea {
  width: 100%;
  margin-top: 6px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font: inherit;
}

textarea { resize: vertical; }

button {
  margin-top: 16px;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

/* Footer */
.site-footer {
  background: var(--bg);
  color: var(--muted);
  text-align: center;
  padding: 16px 0 30px;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .logo {
    max-width: 280px;
  }
}