/* Utility classes for common patterns and overrides */

/* Color Swatches Grid - Responsive */
.color-swatches-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
  .color-swatches-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* Loading States */
.loading-container {
  display: grid;
  place-items: center;
  min-height: 200px;
}

.loading-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-top: var(--spacing-4);
}

/* Placeholder States */
.placeholder-container {
  display: flex;
  height: 100%;
  text-align: center;
  flex-direction: column;
  justify-content: center;
}

.placeholder-icon {
  font-size: var(--font-size-6xl);
  margin-bottom: var(--spacing-4);
}

.placeholder-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
  color: var(--color-text-primary);
  font-family: var(--font-family-heading);
}

.placeholder-description {
  color: var(--color-text-primary);
}

/* Image Preview */
.image-preview {
  max-width: 100%;
  max-height: 16rem; /* 256px */
  margin: 0 auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
}

/* Upload Content */
.upload-content h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
  color: var(--color-text-primary);
}

.upload-content p {
  color: var(--color-text-primary);
}

/* Form Controls Grid */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-6);
}

@media (min-width: 640px) {
  .controls-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Export Buttons */
.export-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-3);
}

.export-button {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-white);
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  display: inline-block;
}

.export-button:hover {
  background-color: var(--color-primary-hover);
  opacity: 0.9;
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  margin-bottom: var(--spacing-6);
  border-bottom: 1px solid var(--color-border-medium);
}

.tab-button {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-normal);
  border-bottom: 2px solid transparent;
  color: var(--color-text-light);
  background: none;
  border: none;
}

.tab-button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-button:hover:not(.active) {
  color: var(--color-text-primary);
}

/* URL Input Section */
.url-section {
  backdrop-filter: blur(4px);
  border-radius: var(--radius-2xl);
}

.url-section h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
  text-align: center;
  color: var(--color-text-primary);
}

.url-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.url-input {
  width: 100%;
  padding: var(--spacing-3);
  border-radius: var(--radius-sm);
  background-color: var(--color-background-muted);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-medium);
  font-size: var(--font-size-base);
}

.url-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(103, 11, 255, 0.2);
}

.url-input::placeholder {
  color: var(--color-text-light);
}

.url-button {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
  cursor: pointer;
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.url-button:hover {
  background-color: var(--color-primary);
  color: var(--color-text-white);
}

/* Results Section */
.results-section {
  flex: 1;
}

.results-card {
  flex: 1;
  width: 100%;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
  padding: var(--spacing-4);
}

@media (min-width: 768px) {
  .results-card {
    padding: var(--spacing-8);
  }
}

.results-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-6);
  text-align: center;
  color: var(--color-text-primary);
  font-family: var(--font-family-heading);
}

.results-export {
  text-align: center;
}

.results-export h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
  color: var(--color-text-primary);
  font-family: var(--font-family-heading);
}

/* Accessibility Improvements */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible for better accessibility */
.focus-visible:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border-light: #000000;
    --color-border-medium: #000000;
    --color-text-light: #000000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print styles */
@media print {
  .header,
  .btn,
  .export-buttons {
    display: none;
  }
  
  .main {
    margin: 0;
    padding: 0;
  }
  
  .color-swatch {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
}