/* ============================================================
   IMAGE COMPRESSOR & OPTIMIZER — Utilities Stylesheet (utilities.css)
   Accessibility (.sr-only), Tool Layouts, Canvas previews, Helpers
   ============================================================ */

/* Screen Reader Only Helper (Section 39) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Reduced Motion Support (Section 39) */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Layout Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.w-100 { width: 100%; }

/* Tool Canvas Workspace Layouts (Cropper, Photo Editor, Watermark, etc.) */
.tool-workspace {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-5xl);
}

.tool-canvas-container {
  position: relative;
  width: 100%;
  min-height: 400px;
  max-height: 640px;
  background-color: #0F172A;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: 
    linear-gradient(45deg, #1E293B 25%, transparent 25%),
    linear-gradient(-45deg, #1E293B 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #1E293B 75%),
    linear-gradient(-45deg, transparent 75%, #1E293B 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.tool-preview-canvas {
  max-width: 100%;
  max-height: 600px;
  object-fit: contain;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.tool-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: var(--surface-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.tool-controls-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Interactive Crop Overlay */
.crop-overlay-box {
  position: absolute;
  border: 2px dashed #FFFFFF;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
  cursor: move;
  display: none;
}

.crop-handle {
  position: absolute;
  width: 12px;
  height: 12px;
  background-color: #FFFFFF;
  border: 2px solid var(--primary);
  border-radius: 2px;
}

.crop-handle-nw { top: -6px; left: -6px; cursor: nw-resize; }
.crop-handle-ne { top: -6px; right: -6px; cursor: ne-resize; }
.crop-handle-sw { bottom: -6px; left: -6px; cursor: sw-resize; }
.crop-handle-se { bottom: -6px; right: -6px; cursor: se-resize; }

/* Filter Sliders Grid for Photo Editor */
.editor-sliders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
  width: 100%;
}