/* Premium Badge Styles */
.premium-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
  color: #5c4d00;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  box-shadow: 0 1px 3px rgba(255, 215, 0, 0.3);
  border: 1px solid rgba(255, 215, 0, 0.5);
}

.premium-badge::before {
  content: '⭐';
  font-size: 0.9em;
}

/* Premium card badge (for entity cards) */
.entity-card .premium-badge,
.tutorial-card .premium-badge,
.calculator-card .premium-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
}

/* Locked Overlay Styles */
.premium-locked-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
  text-align: center;
}

[data-theme='dark'] .premium-locked-overlay,
.dark .premium-locked-overlay {
  background: rgba(0, 0, 0, 0.7);
}

.premium-locked-content {
  max-width: 400px;
}

.premium-locked-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.premium-locked-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary, #222);
  margin: 0 0 8px;
}

.premium-locked-desc {
  font-size: 0.95rem;
  color: var(--text-secondary, #666);
  margin: 0 0 20px;
  line-height: 1.5;
}

.premium-locked-cta {
  display: inline-block;
  padding: 12px 28px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.premium-locked-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
  color: white;
}

.premium-locked-cta::before {
  content: '👑 ';
}

/* Locked content blur effect */
.premium-content-locked {
  filter: blur(8px);
  pointer-events: none;
  user-select: none;
}

/* Premium feature list */
.premium-features {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  text-align: left;
}

.premium-features li {
  padding: 6px 0 6px 24px;
  position: relative;
  color: var(--text-secondary, #666);
  font-size: 0.9rem;
}

.premium-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #4caf50;
  font-weight: 700;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .premium-locked-overlay {
    padding: 16px;
  }

  .premium-locked-title {
    font-size: 1.2rem;
  }

  .premium-locked-desc {
    font-size: 0.9rem;
  }

  .premium-locked-cta {
    padding: 10px 24px;
    font-size: 0.95rem;
  }
}