/* Leistungskatalog — Stylesheet */
.page-katalog {
  --border-radius: 14px;
  --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  padding-top: 72px;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.page-katalog .container {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  width: 100%;
}

/* Hero Section */
.katalog-hero {
  padding: 4.5rem 1rem 3.5rem;
  background: linear-gradient(165deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-color);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.katalog-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="%23e4e4e7" stroke-width="1" opacity="0.4"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
  pointer-events: none;
}

.katalog-hero__inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.katalog-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-color);
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.katalog-hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin: 0 0 1.25rem;
  line-height: 1.15;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.katalog-hero__lead {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

/* Category Filter Tabs */
.katalog-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin: 2.5rem 0;
  position: relative;
  z-index: 3;
}

.katalog-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
}

.katalog-filter-btn:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
  background: var(--bg-secondary);
  transform: translateY(-1px);
}

.katalog-filter-btn.active {
  color: #ffffff;
  background: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.2);
}

/* Grid & Cards */
.katalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-bottom: 4rem;
}

/* Category colors setup */
.katalog-card[data-cat="web"] { --theme-color: #2563eb; --theme-bg: rgba(37, 99, 235, 0.08); }
.katalog-card[data-cat="sec"] { --theme-color: #059669; --theme-bg: rgba(5, 150, 105, 0.08); }
.katalog-card[data-cat="app"] { --theme-color: #8b5cf6; --theme-bg: rgba(139, 92, 246, 0.08); }
.katalog-card[data-cat="meth"] { --theme-color: #ea580c; --theme-bg: rgba(234, 88, 12, 0.08); }
.katalog-card[data-cat="host"] { --theme-color: #0d9488; --theme-bg: rgba(13, 148, 136, 0.08); }

.katalog-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  height: auto;
}

.katalog-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--theme-color, var(--primary-color));
  opacity: 0.85;
}

.katalog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--theme-color, var(--primary-color));
}

.katalog-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.katalog-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--theme-bg, rgba(15, 118, 110, 0.08));
  color: var(--theme-color, var(--primary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.katalog-card__badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--theme-bg);
  color: var(--theme-color);
}

.katalog-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.75rem;
  line-height: 1.3;
}

.katalog-card__desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex: 1;
}

.katalog-card__footer {
  margin-top: auto;
  border-top: 1px dashed var(--border-color);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.katalog-card__more-btn {
  background: none;
  border: none;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--theme-color, var(--primary-color));
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0;
  transition: var(--transition);
}

.katalog-card__more-btn i {
  transition: transform 0.25s ease;
}

.katalog-card__more-btn:hover i {
  transform: translateX(3px);
}

/* Expansion panel style (Accordion details) */
.katalog-card__details {
  display: none;
  margin-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.katalog-card.is-expanded .katalog-card__details {
  display: block;
}

.katalog-card.is-expanded .katalog-card__more-btn i {
  transform: rotate(90deg);
}

.katalog-detail-group {
  margin-bottom: 1.25rem;
}

.katalog-detail-group:last-child {
  margin-bottom: 0;
}

.katalog-detail-group h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin: 0 0 0.5rem;
}

.katalog-detail-group p {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-primary);
  margin: 0;
}

.katalog-detail-list {
  padding-left: 1.25rem;
  margin: 0;
}

.katalog-detail-list li {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.katalog-detail-list li:last-child {
  margin-bottom: 0;
}

/* Call to Action Section */
.katalog-cta {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  border-radius: var(--border-radius);
  padding: 3.5rem 2rem;
  text-align: center;
  color: #ffffff;
  margin-bottom: 5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.katalog-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.katalog-cta h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-top: 0;
  margin-bottom: 1rem;
  color: #ffffff;
}

.katalog-cta p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

.katalog-cta__buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.katalog-cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.katalog-cta .btn-light {
  background: #ffffff;
  color: var(--primary-dark);
}

.katalog-cta .btn-light:hover {
  background: var(--bg-secondary);
  transform: translateY(-2px);
}

.katalog-cta .btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
}

.katalog-cta .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* Code Example Styling in Details */
.katalog-code-block {
  background: #0f172a;
  color: #e2e8f0;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-top: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive adjustment */
@media (max-width: 768px) {
  .katalog-hero {
    padding: 3rem 1rem 2.5rem;
  }
  .katalog-grid {
    grid-template-columns: 1fr;
  }
  .katalog-cta {
    padding: 2.5rem 1.5rem;
  }
  .katalog-cta__buttons {
    flex-direction: column;
    gap: 0.75rem;
  }
  .katalog-cta .btn {
    width: 100%;
    justify-content: center;
  }
}