.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--on-surface);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  background: var(--surface-variant);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.lang-toggle:hover {
  background: var(--primary);
  color: var(--on-primary);
}

.lang-separator {
  opacity: 0.5;
}

.hero {
  padding-top: calc(var(--header-height) + var(--spacing-xxl));
  padding-bottom: var(--spacing-xxl);
  background: linear-gradient(
    135deg,
    var(--background) 0%,
    var(--surface-variant) 100%
  );
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-family: var(--font-family-heading);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--on-surface);
  margin-bottom: var(--spacing-lg);
}

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

.hero-description {
  font-size: 1.25rem;
  color: var(--on-surface-variant);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.features {
  background: var(--surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--primary-container);
  border-radius: var(--radius-xl);
  color: var(--primary);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  color: var(--on-surface-variant);
  line-height: 1.8;
}

.screenshots {
  background: var(--background);
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.screenshot-card {
  overflow: hidden;
  padding: 0;
  background: var(--surface);
}

.screenshot-image {
  width: 100%;
  height: auto;
  aspect-ratio: 9/19.5;
  object-fit: cover;
  display: block;
}

.screenshot-title {
  padding: var(--spacing-md);
  font-size: 1rem;
  font-weight: 600;
  color: var(--on-surface);
  margin-bottom: var(--spacing-xs);
}

.screenshot-description {
  padding: 0 var(--spacing-md) var(--spacing-md);
  font-size: 0.875rem;
  color: var(--on-surface-variant);
}

.faq {
  background: var(--surface);
}

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

.faq-item {
  margin-bottom: var(--spacing-md);
  padding: 0;
}

.faq-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: var(--spacing-lg);
  text-align: left;
  background: none;
  transition: all var(--transition-fast);
}

.faq-question {
  flex: 1;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--on-surface);
  padding-right: var(--spacing-md);
}

.faq-icon {
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 var(--spacing-lg);
  opacity: 0;
  transition: all var(--transition-normal);
}

.faq-answer p {
  padding-bottom: var(--spacing-lg);
  color: var(--on-surface-variant);
  line-height: 1.8;
}

.cta {
  background: var(--background);
}

.cta-content {
  text-align: center;
  padding: var(--spacing-xxl);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--on-primary);
}

.cta-title {
  font-family: var(--font-family-heading);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  color: var(--on-primary);
}

.cta-description {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  color: var(--on-primary);
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta .button-accent {
  background: var(--surface);
  color: var(--primary);
}

.cta .button-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.footer {
  background: var(--surface);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-tagline {
  color: var(--on-surface-variant);
  font-size: 0.875rem;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.footer-heading {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--on-surface);
  margin-bottom: var(--spacing-md);
}

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

.footer-list li {
  margin-bottom: var(--spacing-sm);
}

.footer-list a {
  color: var(--on-surface-variant);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--outline);
  text-align: center;
}

.footer-copyright {
  color: var(--on-surface-variant);
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }

  .hero-description {
    font-size: 1.125rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .screenshots-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .show-mobile {
    display: inline;
  }

  .cta-title {
    font-size: 1.75rem;
  }
}

@media (min-width: 769px) {
  .show-mobile {
    display: none;
  }
}