/* Tech Tabs */
.tech-tabs {
  max-width: 900px;
  margin: 0 auto;
}

.tech-tabs__nav {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0;
}

.tech-tabs__btn {
  padding: var(--space-md) var(--space-xl);
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-light);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tech-tabs__btn:hover {
  color: var(--color-primary);
}

.tech-tabs__btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tech-tabs__panel {
  display: none;
  animation: fadeInUp 0.4s ease;
}

.tech-tabs__panel.active {
  display: block;
}

.tech-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.tech-detail-card {
  padding: var(--space-xl);
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.tech-detail-card h4 {
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.tech-detail-card p {
  font-size: 0.9rem;
}

/* Business Model */
.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.business-card {
  padding: var(--space-2xl);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.business-card h3 {
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.business-card ul {
  margin-top: var(--space-md);
}

.business-card li {
  padding: var(--space-sm) 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.business-card li::before {
  content: '•';
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

/* Tech Stack */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.tech-stack__item {
  padding: var(--space-md) var(--space-xl);
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.tech-stack__item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

@media (max-width: 768px) {
  .tech-tabs__nav {
    flex-direction: column;
    border-bottom: none;
  }
  .tech-tabs__btn {
    border-bottom: none;
    border-left: 3px solid transparent;
    text-align: left;
    padding: var(--space-sm) var(--space-md);
  }
  .tech-tabs__btn.active {
    border-bottom-color: transparent;
    border-left-color: var(--color-primary);
    background: var(--color-bg-light);
  }
  .tech-detail-grid { grid-template-columns: 1fr; }
  .business-grid { grid-template-columns: 1fr; }
}