/* SonusZen - Premium Medical Dark Theme */
/* Farbpalette: Tiefes Blau, Türkis, Weiß - Medizinisch & Seriös */

:root {
  --bg-primary: #060d1a;
  --bg-secondary: #0c1829;
  --bg-card: #111f35;
  --bg-card-hover: #162845;
  --accent-primary: #0ea5e9;
  --accent-secondary: #06b6d4;
  --accent-glow: rgba(14, 165, 233, 0.15);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-subtle: rgba(14, 165, 233, 0.12);
  --border-hover: rgba(14, 165, 233, 0.3);
  --gradient-hero: linear-gradient(135deg, #060d1a 0%, #0c1829 50%, #0f2847 100%);
  --gradient-card: linear-gradient(180deg, #111f35 0%, #0c1829 100%);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 0 40px rgba(14, 165, 233, 0.05);
  --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.2);
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(6, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo span { color: var(--accent-primary); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover { color: var(--text-primary); }

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: var(--transition);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2rem 4rem;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid var(--border-hover);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.8rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(14, 165, 233, 0.4);
}

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

.btn-secondary:hover {
  background: var(--accent-glow);
  border-color: var(--accent-primary);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-ear {
  width: 100%;
  max-width: 400px;
  height: auto;
  filter: drop-shadow(0 0 60px rgba(14, 165, 233, 0.2));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* Benefits Section */
.benefits {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.benefits-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.benefit-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 2rem;
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border: 1px solid var(--border-hover);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.benefit-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.benefit-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Product Review Section */
.product-section {
  padding: 6rem 2rem;
  background: var(--bg-primary);
}

.product-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.product-image-container {
  position: relative;
}

.product-badge {
  position: absolute;
  top: -10px;
  right: -10px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: var(--bg-primary);
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  z-index: 10;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
}

.product-placeholder {
  width: 100%;
  height: 250px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-subtle);
}

.product-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.product-tagline {
  color: var(--accent-primary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.product-price {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.product-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.product-features {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
}

.product-features li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.product-features li::before {
  content: '✓';
  color: var(--accent-primary);
  font-weight: 700;
}

.product-content h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.product-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

/* Ingredients */
.ingredients {
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-subtle);
}

.ingredients h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.ingredient-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.ingredient-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1rem;
}

.ingredient-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.ingredient-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Testimonials */
.testimonials {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.testimonial-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 1.75rem;
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.testimonial-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  background: var(--accent-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--accent-primary);
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.testimonial-location {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* FAQ Section */
.faq {
  padding: 6rem 2rem;
  background: var(--bg-primary);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: var(--border-hover); }

.faq-question {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
}

.faq-toggle {
  color: var(--accent-primary);
  transition: var(--transition);
}

.faq-item.open .faq-toggle { transform: rotate(45deg); }

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-secondary);
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.25rem;
}

/* CTA Section */
.cta-section {
  padding: 6rem 2rem;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
  text-align: center;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-content p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.guarantee-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 100px;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  color: #22c55e;
  margin-top: 1.5rem;
}

/* Blog Section */
.blog-section {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.blog-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.blog-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.blog-card-image {
  height: 180px;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-subtle);
}

.blog-card-image svg {
  width: 100%;
  height: 100%;
}

.blog-card-content { padding: 1.5rem; }

.blog-card-meta {
  font-size: 0.75rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.blog-card-excerpt {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.blog-card-cta {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Blog Article */
.blog-article {
  padding: 8rem 2rem 4rem;
  max-width: 800px;
  margin: 0 auto;
}

.blog-article-header {
  margin-bottom: 3rem;
  text-align: center;
}

.blog-article-meta {
  font-size: 0.85rem;
  color: var(--accent-primary);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-article h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

.blog-article-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

.blog-article-content p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.blog-article-content ul {
  color: var(--text-secondary);
  margin: 1rem 0 1.5rem 1.5rem;
}

.blog-article-content li { margin-bottom: 0.5rem; }

.blog-article-content a {
  color: var(--accent-primary);
  text-decoration: none;
}

.blog-article-content a:hover { text-decoration: underline; }

.blog-related {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.blog-related h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 2rem 2rem;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 300px;
}

.footer-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li { margin-bottom: 0.5rem; }

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover { color: var(--text-primary); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-legal a:hover { color: var(--text-primary); }

/* Legal Pages */
.legal-page {
  padding: 8rem 2rem 4rem;
  max-width: 800px;
  margin: 0 auto;
}

.legal-page h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.legal-page h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 1.5rem 0 1rem;
  color: var(--text-primary);
}

.legal-page p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.legal-page ul {
  color: var(--text-secondary);
  margin: 1rem 0 1.5rem 1.5rem;
}

.legal-page li { margin-bottom: 0.5rem; }

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
  padding: 1.5rem 2rem;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  backdrop-filter: blur(20px);
}

.cookie-banner.show { display: flex; }

.cookie-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

.cookie-text a:hover { text-decoration: underline; }

.cookie-buttons {
  display: flex;
  gap: 1rem;
  flex-shrink: 0;
}

.cookie-btn {
  padding: 0.6rem 1.25rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.cookie-btn-accept {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.cookie-btn-accept:hover { background: var(--accent-secondary); }

.cookie-btn-decline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.cookie-btn-decline:hover { border-color: var(--border-hover); color: var(--text-primary); }

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content { order: 2; }
  .hero-visual { order: 1; }
  .hero h1 { font-size: 2.75rem; }
  .hero-description { margin: 0 auto 2rem; }
  .hero-cta { justify-content: center; }
  .product-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: block; }
  .benefits-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .hero { padding: 7rem 1.5rem 3rem; }
  .hero h1 { font-size: 2.25rem; }
  .section-title { font-size: 2rem; }
  .product-section, .benefits-section, .testimonials, .faq, .blog-section { padding: 4rem 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cookie-banner { flex-direction: column; text-align: center; gap: 1rem; }
  .ingredient-grid { grid-template-columns: 1fr; }
}