/* ========================================
   TETRA Website - App Page Styles
   ======================================== */

/* App Hero */
.app-hero {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
}

.app-hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.15;
}

.app-hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.app-hero-text {
  max-width: 560px;
}

.app-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  margin-bottom: var(--space-xl);
}

.app-badge .app-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.app-title {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: var(--space-lg);
}

.app-tagline {
  font-size: 20px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

.app-hero-actions {
  display: flex;
  gap: var(--space-md);
}

.app-hero-visual {
  position: relative;
}

.app-screenshot {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.app-screenshot .visual-placeholder {
  min-height: 400px;
}

.app-screenshot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
}

.feature-detail.text-only {
  grid-template-columns: 1fr;
}

.feature-detail.text-only .feature-detail-content {
  max-width: 760px;
  margin: 0 auto;
}

/* Key Features Section */
.key-features-section {
  padding: 80px 0;
}

.features-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-showcase-card {
  padding: var(--space-2xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.feature-showcase-card:hover {
  border-color: var(--app-color, var(--text-tertiary));
  transform: translateY(-4px);
}

.feature-icon-large {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: 28px;
  margin-bottom: var(--space-lg);
}

.feature-showcase-card h3 {
  font-size: 18px;
  margin-bottom: var(--space-md);
}

.feature-showcase-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Detailed Features Section */
.detailed-features-section {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.feature-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  padding: var(--space-4xl) 0;
}

.feature-detail:not(:last-child) {
  border-bottom: 1px solid var(--border-primary);
}

.feature-detail:nth-child(even) {
  direction: rtl;
}

.feature-detail:nth-child(even) > * {
  direction: ltr;
}

.feature-detail-content {
  max-width: 480px;
}

.feature-number {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  margin-bottom: var(--space-lg);
}

.feature-detail-content h3 {
  font-size: 28px;
  margin-bottom: var(--space-md);
}

.feature-detail-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

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

.feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-list .check {
  color: var(--success);
  font-weight: 600;
}

.feature-detail-visual {
  position: relative;
}

.feature-detail-visual .visual-placeholder {
  min-height: 320px;
}

/* Specs Section */
.specs-section {
  padding: 80px 0;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.spec-card {
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-align: center;
}

.spec-value {
  display: block;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.spec-label {
  font-size: 14px;
  color: var(--text-tertiary);
}

/* Integration Section */
.integration-section {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.integration-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.integration-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-fast);
}

.integration-card:hover {
  border-color: var(--text-tertiary);
}

.integration-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: 24px;
  margin-bottom: var(--space-md);
}

.integration-card span {
  font-size: 14px;
  font-weight: 500;
}

/* Related Apps Section */
.related-apps-section {
  padding: 80px 0;
}

.related-apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.related-app-card {
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.related-app-card:hover {
  border-color: var(--card-color);
  transform: translateY(-4px);
}

.related-app-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.related-app-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 20px;
}

.related-app-card h4 {
  font-size: 16px;
}

.related-app-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.related-app-card .btn-text {
  font-size: 13px;
}

/* App CTA Section */
.app-cta-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.app-cta-card {
  position: relative;
  padding: var(--space-4xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
}

.app-cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--app-color, var(--gradient-primary));
}

.app-cta-card h2 {
  font-size: 32px;
  margin-bottom: var(--space-md);
}

.app-cta-card > p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
}

.app-cta-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

/* Responsive */
@media (max-width: 1024px) {
  .app-hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .app-hero-text {
    max-width: 100%;
  }
  
  .app-hero-actions {
    justify-content: center;
  }
  
  .app-hero-visual {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .features-showcase {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .feature-detail {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .feature-detail:nth-child(even) {
    direction: ltr;
  }
  
  .feature-detail-content {
    max-width: 100%;
  }
  
  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .integration-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .related-apps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .app-title {
    font-size: 40px;
  }
  
  .specs-grid {
    grid-template-columns: 1fr;
  }
  
  .integration-grid {
    grid-template-columns: 1fr;
  }
  
  .related-apps-grid {
    grid-template-columns: 1fr;
  }
}