/* Unified Overlay Styles */
.unified-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, var(--overlay-opacity-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  backdrop-filter: blur(4px);
  opacity: 1;
}

.unified-overlay .loading {
  color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  font-size: 18px;
  font-weight: 500;
  text-align: center;
  line-height: 1.2;
  margin: 0;
  padding: 0;
  position: static;
  top: auto;
  left: auto;
  transform: none;
}

.dark-mode .unified-overlay .loading {
  color: #ffffff;
}

/* Intro Modal Styles */

.intro-modal {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--border-radius-lg);
  max-width: 420px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: introModalSlideIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.dark-mode .intro-modal {
  background: var(--color-bg-primary-dark);
  border-color: var(--color-border-primary-dark);
}

@keyframes introModalSlideIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.intro-modal-content {
  padding: var(--spacing-xl);
  text-align: center;
}

.intro-title {
  font-family: var(--font-logo);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-sm) 0;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.dark-mode .intro-title {
  color: var(--color-text-primary-dark);
}

.intro-subtitle {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.4;
}

.dark-mode .intro-subtitle {
  color: var(--color-text-secondary-dark);
}

.intro-description {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-tertiary);
  margin: 0 0 var(--spacing-lg) 0;
  line-height: 1.5;
}

.dark-mode .intro-description {
  color: var(--color-text-tertiary-dark);
}

.intro-modal .google-fonts-link {
  color: var(--text-color) !important;
  font-weight: bold;
  background: none !important;
  border: none !important;
}

.intro-modal .google-fonts-link:hover {
  color: var(--text-color) !important;
  font-weight: bold;
  background: none !important;
  border: none !important;
}

.intro-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  align-items: center;
}

.intro-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.dark-mode .intro-feature {
  color: var(--color-text-secondary-dark);
}

.intro-feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--border-radius-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

.dark-mode .intro-feature-icon {
  background: var(--color-bg-tertiary-dark);
  color: var(--color-text-tertiary-dark);
}

.intro-feature-icon svg {
  width: 16px;
  height: 16px;
}

.intro-start-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid #000000;
  border-radius: var(--border-radius-md);
  background: #000000;
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.intro-start-button:hover {
  background: #333333;
  border-color: #333333;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.dark-mode .intro-start-button {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.dark-mode .intro-start-button:hover {
  background: #e0e0e0;
  border-color: #e0e0e0;
  box-shadow: 0 2px 6px rgba(255, 255, 255, 0.1);
}


/* Responsive design */
@media (max-width: 600px) {
  .intro-modal {
    width: 95%;
    margin: var(--spacing-lg);
  }
  
  .intro-modal-content {
    padding: var(--spacing-lg);
  }
  
  .intro-title {
    font-size: 28px;
  }
  
  .intro-subtitle {
    font-size: 14px;
  }
  
  .intro-description {
    font-size: 12px;
  }
  
  .intro-features {
    gap: var(--spacing-sm);
  }
  
  .intro-feature {
    font-size: 12px;
  }
  
}