/* Ruler Markings, Ticks, and Labels */
.ruler-markings {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 1000;
  user-select: none;
  transform-origin: center;
}

.ruler-tick {
  position: absolute;
  background: var(--ruler-tick, #38BDF8);
  width: 8px; /* fallback for minor ticks */
  height: 2px; /* fallback for minor ticks */
  border: none;
  border-radius: 0;
  box-shadow: none;
  max-width: 100%;
}
.ruler-tick.minor {
  width: 4px;
  height: 2px;
}

.ruler-tick.circle-point {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ruler-tick, #38BDF8);
  border: 1px solid var(--ruler-border, #38BDF8);
  box-shadow: 0 0 4px rgba(0,0,0,0.3);
}
.ruler-label,
.ruler-label.circle-label {
  position: absolute;
  color: var(--ruler-label, #2976ff);
  font-size: 12px;
  font-weight: 600;
  user-select: none;
  z-index: 1001;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ruler-label.circle-label {
  font-size: 10px;
  font-weight: bold;
}

/* Ruler Handles */
.ruler-rotate, .ruler-resize, .ruler-resize-right {
  position: absolute;
  width: 16px;
  height: 16px;
  opacity: 0;
  z-index: 1001;
  pointer-events: auto;
  background: transparent;
}

/* Example positions for resize handles (may still need JS for accurate placement): */
.ruler-resize {
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  cursor: ns-resize;
}
.ruler-resize-right {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  cursor: ew-resize;
}


/* Ruler Container */
#canvas-ruler {
  position: fixed;
  min-width: 60px;
  min-height: 60px;
  border-radius: 30px;
  border: 2px solid var(--ruler-border, #38BDF8);
  background: var(--ruler-bg, #fff);
  box-shadow: 0 6px 32px rgba(56,189,248,0.08);
  z-index: 2147483646;
  user-select: none;
  /* Additional styling added here as needed */
}

/* Circle and Square Modifiers */
#canvas-ruler.circle {
  border-radius: 50%;
}
#canvas-ruler.square {
  border-radius: 6px;
}

/* Ruler Toggle and Stamp Buttons */
#ruler-toggle-rounded-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translateX(-50%);
  border: none;
  background: var(--ruler-bg, #fff);
  color: #101010;
  cursor: pointer;
  z-index: 1002;
  user-select: none;
  box-shadow: 0 2px 8px rgba(31,117,254,0.22);
  transition: background-color 0.3s;
  width: 20px;
  height: 20px;
  border-radius: 50%;
}

/* Position stamp buttons below the toggle button */
#ruler-stamp-btn,
#ruler-square-stamp-btn {
  position: absolute;
  left: 50%;
  top: calc(50% + 40px);
  transform: translateX(-50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  width: 28px;
  height: 28px;
  border-radius: 50%; /* circle for ruler-stamp-btn, override for square later */
  border: none;
  background-color: var(--ruler-border);
  color: var(--ruler-label);
  box-shadow: 0 1px 4px rgba(56, 189, 248, 0.3);
  cursor: pointer;
}

/* Show circle stamp button for circle ruler */
#canvas-ruler.circle #ruler-stamp-btn {
  opacity: 1;
  pointer-events: auto;
}

/* Show square stamp button for square ruler */
#canvas-ruler.square #ruler-square-stamp-btn {
  opacity: 1;
  pointer-events: auto;
  border-radius: 6px; /* square shape */
}

/* Ruler Balance Line */
#ruler-balance-line {
  position: absolute;
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  background-color: #D71921;
  opacity: 0;
  z-index: 10;
  pointer-events: none;
  transform: translateX(-1px);
}

/* Ruler Align Indicator */
#ruler-align-indicator {
  position: absolute;
  left: 50%; top: -24px;
  transform: translateX(-50%);
  background: #6FF3BC;
  color: #101010;
  font-size: 11px;
  font-weight: 700;
  border-radius: 6px;
  padding: 2px 8px;
  box-shadow: 0 2px 8px rgba(31,117,254,0.22);
  display: none;
  pointer-events: none;
  z-index: 1001;
  letter-spacing: 1px;
}

/* Ruler Snap Lines for Alignment */
.ruler-snap-line.vertical {
  position: fixed;
  top: 0;
  height: 100vh;
  width: 1.5px;
  background-color: rgba(41, 118, 255, 0.5);
  z-index: 2147483647;
  pointer-events: none;
}
.ruler-snap-line.horizontal {
  position: fixed;
  left: 0;
  width: 100vw;
  height: 1.5px;
  background-color: rgba(41, 118, 255, 0.5);
  z-index: 2147483647;
  pointer-events: none;
}



#ruler-guide-vertical {
  position: fixed;
  top: 0;
  width: 2px;
  height: 100vh;
  background: #38BDF8;
  opacity: 0.5;
  z-index: 2147483647;
  pointer-events: none;
}
#ruler-guide-horizontal {
  position: fixed;
  left: 0;
  height: 2px;
  width: 100vw;
  background: #38BDF8;
  opacity: 0.5;
  z-index: 2147483647;
  pointer-events: none;
}
/* The .ruler-snap-line selectors above updated for guideline consistency */



  #canvas-ruler.rounded {
    border-radius: 30px;
    box-shadow: 0 6px 20px rgba(31, 117, 254, 0.3);
    background: linear-gradient(135deg, #6FF3BC 0%, #38BDF8 100%);
    border: 1px solid #38BDF8;
  }
  #canvas-ruler.rounded::after {
    background: #101010;
    opacity: 0.7;
  }
  /* Circle ruler styling */
  #canvas-ruler.circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--ruler-bg);
    border: 1px solid var(--ruler-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
    cursor: pointer;
    user-select: none;
    pointer-events: auto;
    transition: all 0.3s ease;
  }
 
  /* Square ruler styling */
  #canvas-ruler.square {
    width: 150px;
    height: 150px;
    background: var(--ruler-bg);
    border: 1px solid var(--ruler-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    cursor: pointer;
    user-select: none;
    pointer-events: auto;
    transition: all 0.3s ease;
    border-radius: 6px;
  }
  /* Right resize handle for ruler */
  .ruler-resize-right {
    position: absolute;
    top: 50%;
    right: 0;
    width: 8px;
    height: 30px;
    background: transparent;
    cursor: ew-resize;
    transform: translateY(-50%);
    z-index: 1001;
  }


.ruler-tick.circle-point {
  box-shadow: 0 0 2px rgba(31,117,254,0.6);
}
.ruler-label.circle-label {
  user-select: none;
  pointer-events: none;
}

/* ---- Subtle shadow for all casted stamps (circle, square, scalable, accessibility stamp) ---- */

.circle-ruler-stamp,
.square-ruler-stamp {
  box-shadow: 0 2px 6px rgba(0,0,0,0.12) !important;
}

.scalable-element {
  box-shadow: 0 2px 6px rgba(0,0,0,0.12) !important;
}


:root {
    --ruler-bg-white: rgba(255,255,255,0.46);
    --ruler-bg-black: rgba(0,0,0,0.46);
    --ruler-bg-neutral: rgba(128,128,128,0.26);
    --ruler-bg-light: rgba(255,255,255,0.45);
    --ruler-bg-dark: rgba(28,35,48,0.48);
    --ruler-border-light: #6FF3BC;
    --ruler-border-dark: #1963AF;
    --ruler-tick-light: #222;
    --ruler-tick-dark: #fff;
    --ruler-label-light: #333;
    --ruler-label-dark: #fff;
  }
  body.light {
    --ruler-bg: var(--ruler-bg-light);
    --ruler-border: var(--ruler-border-light);
    --ruler-tick: var(--ruler-tick-light);
    --ruler-label: var(--ruler-label-light);
  }
  body.dark {
    --ruler-bg: var(--ruler-bg-dark);
    --ruler-border: var(--ruler-border-dark);
    --ruler-tick: var(--ruler-tick-dark);
    --ruler-label: var(--ruler-label-dark);
  }
  #canvas-ruler {
    position: absolute;
    width: 60px;
    height: 300px;
    background: var(--ruler-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
    border: 1px solid var(--ruler-border);
    top: 180px;
    left: 180px;
    cursor: grab;
    z-index: 11000;
    pointer-events: auto;
    user-select: none;
    transition: box-shadow 0.15s;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
    cursor: pointer;
  }
  #canvas-ruler.dragging {
    cursor: grabbing;
    box-shadow: 0 6px 18px rgba(31,117,254,0.18);
  }
  #canvas-ruler::after {
    content: "";
    position: absolute;
    left: 50%; top: 0; bottom: 0; width: 2px;
    background: #2976ff;
    opacity: 0.45;
    transform: translateX(-1px);
    pointer-events: none;
  }
  #ruler-balance-line {
    transition: opacity 0.3s;
    opacity: 0;
  }
  #canvas-ruler .ruler-rotate {
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(31,117,254,0.10);
    border: 1.5px solid #2976ff;
    cursor: pointer;
    z-index: 1;
    opacity: 0;
    pointer-events: auto;
  }
  #canvas-ruler .ruler-rotate.nw { left: -12px; top: -12px; cursor: nwse-resize;}
  #canvas-ruler .ruler-rotate.ne { right: -12px; top: -12px; cursor: nesw-resize;}
  #canvas-ruler .ruler-rotate.sw { left: -12px; bottom: -12px; cursor: nesw-resize;}
  #canvas-ruler .ruler-rotate.se { right: -12px; bottom: -12px; cursor: nwse-resize;}
  #canvas-ruler .ruler-resize {
    position: absolute;
    left: 50%;
    bottom: -11px;
    transform: translateX(-50%);
    width: 36px;
    height: 18px;
    border-radius: 8px;
    cursor: ns-resize;
    opacity: 0.04;
    background: #2976ff;
    z-index: 2;
    transition: opacity 0.15s;
    pointer-events: auto;
  }

  #canvas-ruler.ruler-inactive .ruler-resize {
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
    background: transparent !important;
  }
  

  #canvas-ruler .ruler-markings {
    position: absolute;
    left: 0; top: 0; width: 100%; height: 100%;
    pointer-events: none;
    z-index: 3;
    font-family: 'Avenir Next', Arial, sans-serif;
  }
  #canvas-ruler .ruler-tick {
    position: absolute;
    width: 10px;
    height: 2px;
    background: var(--ruler-tick);
    opacity: 0.9;
    z-index: 2;
  }
  #canvas-ruler .ruler-tick.left { left: 0; }
  #canvas-ruler .ruler-tick.right { right: 0; }
  #canvas-ruler .ruler-tick.minor { width: 6px; background: #666; opacity: 0.7; }
  #canvas-ruler .ruler-label {
    position: absolute;
    color: var(--ruler-label);
    font-size: 10px;
    font-weight: bold;
    background: rgba(255,255,255,0.28);
    border-radius: 4px;
    padding: 0 1.5px;
    z-index: 3;
    pointer-events: none;
    user-select: none;
  }
  
  #canvas-ruler .ruler-label.left { left: 12px; text-align: left;}
  #canvas-ruler .ruler-label.right { right: 12px; text-align: right;}
  /* opacity for ruler labels (if needed) */
  /* opacity: 0.36; */

#filter-toggle-btn {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ruler-border);
  background: var(--ruler-bg);
  color: var(--ruler-label);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(31,117,254,0.22);
  transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s, color 0.3s;
  z-index: 1002;
  user-select: none;
  padding: 0;
}
#filter-toggle-btn:hover,
#filter-toggle-btn:focus {
  box-shadow: 0 4px 12px rgba(31,117,254,0.30);
  outline: none;
}

/* Inactive Ruler Opacity */
#canvas-ruler.ruler-inactive,
#canvas-ruler.ruler-inactive * {
  opacity: 0.5 !important;
  transition: opacity 0.3s ease;
}