/* Canvas Styles */
.canvas-wrapper {
  position: relative;
  z-index: 1;
  background: var(--color-bg, #fff);
}

.canvas-wrapper canvas {
  position: relative;
  z-index: 1;
}

.canvas-empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: radial-gradient(circle, rgb(148 163 184 / 28%) 1.25px, transparent 1.25px);
  background-position: center;
  background-size: 36px 36px;
  pointer-events: none;
  opacity: 1;
  visibility: visible;
  transition:
    opacity 0.12s ease,
    visibility 0.12s ease;
  z-index: 2;
}

.canvas-empty-state--hidden {
  opacity: 0;
  visibility: hidden;
}

.canvas-empty-card {
  width: min(560px, calc(100% - 64px));
  padding: 34px 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.canvas-empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 4px;
  stroke: #111827;
  fill: none;
  stroke-width: 2.5;
}

.canvas-empty-card h3 {
  margin: 4px 0 0;
  color: #111827;
  font-size: clamp(1.85rem, 2.6vw, 2.35rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.canvas-empty-card p {
  margin: 0;
  max-width: 540px;
  color: #6b7280;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.5;
}

.canvas-empty-action {
  min-height: 40px;
  margin-top: 4px;
  padding: 0 20px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  box-shadow: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  pointer-events: auto;
  transition:
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.canvas-empty-action:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.canvas-empty-action:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.canvas-empty-tip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 540px;
  margin-top: 6px;
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: rgb(255 255 255 / 88%);
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
  line-height: 1.2;
  justify-content: center;
}

.canvas-empty-tip span:first-child {
  color: var(--color-text-tertiary);
  font-size: 1.1rem;
}

#canvas {
  display: block;
}

.canvas-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.canvas-controls {
  position: absolute;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.canvas-controls .btn {
  pointer-events: all;
  background-color: white;
  box-shadow: var(--shadow-md);
}

/* ================================
   FABRIC.JS CONTROL CUSTOMIZATION
   Professional Selection Handles
   ================================ */

/* Selection border styling */
.canvas-container .upper-canvas {
  outline: none;
}

/* Override Fabric.js default control styles with modern, professional look */
.canvas-container canvas[class*='canvas'] {
  outline: none;
}