/* ============================================================
   Layout
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body, #app {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 13px;
  background: #f0f2f5;
  overflow: hidden;
}

#app { display: flex; flex-direction: column; }

/* ============================================================
   Diagram title bar
   ============================================================ */
#diagram-title {
  background: #0f172a;
  color: #94a3b8;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 12px;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.02em;
}

/* ============================================================
   Menu bar
   ============================================================ */
#menu-bar {
  display: flex;
  align-items: stretch;
  background: #0f172a;
  border-bottom: 1px solid #1e293b;
  flex-shrink: 0;
  padding: 0 4px;
  user-select: none;
}

.menu {
  position: relative;
}

.menu-title {
  display: flex;
  align-items: center;
  background: none;
  border: none;
  color: #94a3b8;
  font-size: 12px;
  font-family: inherit;
  padding: 3px 10px;
  cursor: pointer;
  border-radius: 3px;
  white-space: nowrap;
  height: 100%;
  transition: color 0.1s, background 0.1s;
}

.menu-title:hover,
.menu.open .menu-title {
  background: #1e293b;
  color: #e2e8f0;
}

.menu-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  z-index: 1100;
  min-width: 220px;
  padding: 4px 0;
  list-style: none;
}

.menu.open .menu-dropdown {
  display: block;
}

.menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 6px 14px 6px 14px;
  background: none;
  border: none;
  color: #e2e8f0;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  white-space: nowrap;
  gap: 24px;
}

.menu-item:hover {
  background: #2563eb;
  color: #fff;
}

.menu-item:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.menu-item kbd {
  font-family: inherit;
  font-size: 11px;
  color: #64748b;
  flex-shrink: 0;
}

.menu-item:hover kbd {
  color: rgba(255, 255, 255, 0.6);
}

.menu-sep {
  height: 1px;
  background: #334155;
  margin: 4px 0;
}

/* ============================================================
   Toolbar
   ============================================================ */
#toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  background: #1e293b;
  border-bottom: 1px solid #0f172a;
  color: #e2e8f0;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 3px;
}

.toolbar-separator {
  margin-left: 6px;
  padding-left: 10px;
  border-left: 1px solid #334155;
}

#toolbar button {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  background: #334155;
  color: #e2e8f0;
  border: 1px solid #475569;
  border-radius: 5px;
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  white-space: nowrap;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}

#toolbar button:hover {
  background: #475569;
  border-color: #64748b;
}

#toolbar button:active {
  background: #1e40af;
}

#toolbar .tool-btn.active {
  background: #2563eb;
  border-color: #3b82f6;
  color: #fff;
  box-shadow: 0 0 0 2px rgba(59,130,246,0.3);
}

#toolbar button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

#toolbar-status {
  margin-left: auto;
  font-size: 11px;
  color: #94a3b8;
}

/* ============================================================
   Main area
   ============================================================ */
#main {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* ============================================================
   Icon Library Panel
   ============================================================ */
#icon-panel {
  display: flex;
  flex-direction: column;
  width: 240px;
  flex-shrink: 0;
  background: #1e293b;
  border-right: 1px solid #0f172a;
  overflow: hidden;
  transition: width 0.2s ease;
}

#icon-panel.icon-panel-closed {
  width: 0;
}

#icon-panel-header {
  padding: 8px;
  border-bottom: 1px solid #0f172a;
  flex-shrink: 0;
}

#icon-search {
  width: 100%;
  padding: 5px 8px;
  background: #0f172a;
  color: #e2e8f0;
  border: 1px solid #334155;
  border-radius: 4px;
  font-size: 12px;
  font-family: inherit;
  outline: none;
  box-sizing: border-box;
}

#icon-search::placeholder { color: #475569; }
#icon-search:focus { border-color: #3b82f6; }

#icon-tree {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 0;
}

#icon-tree::-webkit-scrollbar { width: 6px; }
#icon-tree::-webkit-scrollbar-track { background: transparent; }
#icon-tree::-webkit-scrollbar-thumb { background: #334155; border-radius: 3px; }

.icon-provider {
  margin-bottom: 2px;
}

.icon-provider-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  user-select: none;
  background: #162032;
}

.icon-provider-header:hover { color: #e2e8f0; background: #1e2d3e; }

.icon-category {
  margin-bottom: 1px;
}

.icon-category-header {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px 4px 18px;
  cursor: pointer;
  font-size: 11px;
  color: #64748b;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon-category-header:hover { color: #94a3b8; background: #1e2d3e; }

.icon-chevron {
  font-size: 9px;
  flex-shrink: 0;
  transition: transform 0.15s;
  display: inline-block;
}

.icon-chevron.open { transform: rotate(90deg); }

.icon-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px 8px 6px 24px;
}

.icon-grid.hidden { display: none; }

.icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 52px;
  padding: 4px 2px;
  border-radius: 4px;
  cursor: grab;
  user-select: none;
  border: 1px solid transparent;
}

.icon-item:hover {
  background: #334155;
  border-color: #475569;
}

.icon-item.dragging { opacity: 0.4; }

.icon-item img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  pointer-events: none;
}

.icon-item span {
  font-size: 9px;
  color: #64748b;
  text-align: center;
  line-height: 1.2;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
  pointer-events: none;
}

.icon-item:hover span { color: #94a3b8; }

/* ============================================================
   Left toolbar (drawing tools)
   ============================================================ */
#left-toolbar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 6px;
  background: #1e293b;
  border-right: 1px solid #0f172a;
  flex-shrink: 0;
  width: 58px;
}

#left-toolbar .tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 44px;
  height: 44px;
  padding: 4px 2px;
  background: #334155;
  color: #e2e8f0;
  border: 1px solid #475569;
  border-radius: 6px;
  cursor: pointer;
  font-size: 10px;
  font-family: inherit;
  white-space: nowrap;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}

#left-toolbar .tool-btn span {
  line-height: 1;
}

#left-toolbar .tool-btn:hover {
  background: #475569;
  border-color: #64748b;
}

#left-toolbar .tool-btn:active {
  background: #1e40af;
}

#left-toolbar .tool-btn.active {
  background: #2563eb;
  border-color: #3b82f6;
  color: #fff;
  box-shadow: 0 0 0 2px rgba(59,130,246,0.3);
}

.left-tb-sep {
  width: 80%;
  border-top: 1px solid #334155;
  margin: 6px 0;
}

#app-version {
  margin-top: auto;
  padding-top: 8px;
  font-size: 9px;
  color: #475569;
  text-align: center;
  user-select: none;
  letter-spacing: 0.04em;
  word-break: break-all;
}

/* ============================================================
   Canvas
   ============================================================ */
#canvas-container {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  background: #f8fafc;
  /* Dot grid */
  background-image: radial-gradient(circle, #cbd5e1 1px, transparent 1px);
  background-size: 24px 24px;
  overflow: hidden;
}

#canvas {
  flex: 1;
  min-height: 0;
  display: block;
}

/* ============================================================
   Tab bar
   ============================================================ */
#tab-bar {
  display: flex;
  align-items: center;
  background: #1e293b;
  border-top: 1px solid #0f172a;
  min-height: 32px;
  padding: 3px 6px;
  gap: 2px;
  flex-shrink: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px 3px 10px;
  background: #334155;
  border: 1px solid #475569;
  border-radius: 4px;
  color: #94a3b8;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  max-width: 160px;
  transition: background 0.1s, color 0.1s;
}

.tab-btn:hover {
  background: #475569;
  color: #e2e8f0;
}

.tab-btn.active {
  background: #1e40af;
  border-color: #3b82f6;
  color: #fff;
}

.tab-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 110px;
}

.tab-close {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
  font-size: 14px;
  line-height: 1;
  opacity: 0;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  pointer-events: none;
  transition: opacity 0.1s;
}

.tab-btn:hover .tab-close,
.tab-btn.active .tab-close,
.tab-close:focus-visible {
  opacity: 0.4;
  pointer-events: auto;
}

.tab-close:hover {
  opacity: 1;
}

.tab-add-btn {
  background: none;
  border: 1px solid transparent;
  color: #64748b;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 1px 8px;
  border-radius: 4px;
  flex-shrink: 0;
  font-family: inherit;
}

.tab-add-btn:hover {
  background: #334155;
  color: #e2e8f0;
  border-color: #475569;
}

.tab-rename-input {
  background: #0f172a;
  border: 1px solid #3b82f6;
  color: #e2e8f0;
  font-size: 12px;
  font-family: inherit;
  padding: 1px 4px;
  border-radius: 2px;
  width: 90px;
  outline: none;
}

/* ============================================================
   SVG — Nodes (all shape types share .node-shape)
   ============================================================ */
.node-shape {
  fill: var(--node-fill, #ffffff);
  stroke: var(--node-stroke, #475569);
  stroke-width: 1.5;
  filter: drop-shadow(0 1px 3px rgba(0,0,0,0.10));
  cursor: move;
}

.node-shape.selected {
  stroke: #2563eb !important;
  stroke-width: 2 !important;
  fill: #eff6ff !important;
}

.node-shape.connector-hover {
  stroke: #16a34a !important;
  stroke-width: 2 !important;
  stroke-dasharray: 4 2 !important;
}

.node-shape.connector-target {
  stroke: #16a34a !important;
  stroke-width: 2 !important;
}

.node-label {
  fill: #1e293b;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   SVG — Edges
   ============================================================ */
.edge-hit {
  stroke: transparent;
  stroke-width: 12;
  fill: none;
  cursor: pointer;
}

.edge-line {
  stroke-width: 1.5;
  fill: none;
  cursor: pointer;
}

.edge-line.selected {
  stroke-width: 2;
}

.edge-label {
  fill: #475569;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  pointer-events: none;
  user-select: none;
  background: #f8fafc;
}

.edge-label-bg {
  fill: #f8fafc;
  stroke: none;
}

/* Arrowheads inherit colour from the referencing line element via currentColor */
.arrow-fill { fill: currentColor; }
.arrow-fill-sel { fill: currentColor; }

/* Line endpoint symbols (dot / square) */
.line-sym-fill     { fill: currentColor; stroke: none; }
.line-sym-fill-sel { fill: currentColor; stroke: none; }

/* ============================================================
   SVG — Line endpoint handles
   ============================================================ */
.line-endpoint-handle {
  fill: #ffffff;
  stroke: #64748b;
  stroke-width: 1.5;
  cursor: move;
}

.line-endpoint-handle:hover {
  fill: #f1f5f9;
  stroke: #2563eb;
}

/* ============================================================
   SVG — Waypoint handles
   ============================================================ */
.waypoint-handle {
  fill: #ffffff;
  stroke: #2563eb;
  stroke-width: 1.5;
  cursor: move;
}

.waypoint-handle:hover {
  fill: #dbeafe;
}

/* ============================================================
   SVG — Annotations
   ============================================================ */
.annotation-text {
  fill: #7c3aed;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  cursor: move;
}

.annotation-bg {
  fill: none;
  stroke: none;
  pointer-events: none;
}

.annotation-selection {
  fill: none;
  stroke: #2563eb;
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
  pointer-events: none;
}

/* ============================================================
   SVG — Resize handles
   ============================================================ */
.resize-handle {
  fill: #ffffff;
  stroke: #2563eb;
  stroke-width: 1.5;
  cursor: pointer;
}

/* ============================================================
   SVG — Temporary drawing shapes
   ============================================================ */
.temp-shape {
  fill: rgba(37,99,235,0.05);
  stroke: #2563eb;
  stroke-width: 1.5;
  stroke-dasharray: 5 3;
  pointer-events: none;
}

.temp-connector {
  stroke: #2563eb;
  stroke-width: 1.5;
  stroke-dasharray: 6 3;
  fill: none;
  marker-end: url(#arrowhead-sel);
  pointer-events: none;
}

.selection-box {
  fill: rgba(37,99,235,0.06);
  stroke: #2563eb;
  stroke-width: 1;
  stroke-dasharray: 4 3;
  pointer-events: none;
}

/* ============================================================
   SVG — Inline editor (foreignObject input)
   ============================================================ */
.inline-input {
  box-sizing: border-box;
  border: 1.5px solid #2563eb;
  border-radius: 3px;
  background: #fff;
  color: #1e293b;
  font-size: 13px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  padding: 2px 5px;
  outline: none;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.2);
}

/* Single-line node/edge label inputs are centred; textarea annotation editors use their own text-align */
input.inline-input { text-align: center; }

.inline-textarea {
  text-align: left;
  resize: both;
  overflow: auto;
  line-height: 1.4;
}

/* ============================================================
   Properties panel
   ============================================================ */
#properties-panel {
  width: 210px;
  flex-shrink: 0;
  background: #fff;
  border-left: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

#properties-header {
  padding: 10px 14px 8px;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
  border-bottom: 1px solid #e2e8f0;
  background: #f8fafc;
  flex-shrink: 0;
}

#properties-content {
  padding: 12px;
  flex: 1;
}

.no-selection {
  color: #94a3b8;
  font-style: italic;
  font-size: 12px;
}

.prop-group {
  margin-bottom: 10px;
}

.prop-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 3px;
}

.prop-group input[type="text"],
.prop-group input[type="number"] {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  font-size: 13px;
  font-family: inherit;
  color: #1e293b;
  background: #f8fafc;
  outline: none;
  transition: border-color 0.1s;
}

.prop-group input:focus {
  border-color: #2563eb;
  background: #fff;
  box-shadow: 0 0 0 2px rgba(37,99,235,0.15);
}

.prop-value {
  font-size: 13px;
  color: #475569;
}

#properties-hint {
  padding: 12px 14px;
  border-top: 1px solid #e2e8f0;
  flex-shrink: 0;
}

#properties-hint p {
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

#properties-hint ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

#properties-hint li {
  font-size: 11px;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 6px;
}

kbd {
  display: inline-block;
  padding: 1px 5px;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 3px;
  font-size: 10px;
  font-family: monospace;
  color: #475569;
  white-space: nowrap;
}


/* ============================================================
   Zoom controls
   ============================================================ */
#zoom-select {
  padding: 5px 6px;
  background: #334155;
  color: #e2e8f0;
  border: 1px solid #475569;
  border-radius: 5px;
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  outline: none;
  transition: background 0.1s, border-color 0.1s;
  min-width: 62px;
}

#zoom-select:hover { background: #475569; border-color: #64748b; }
#zoom-select:focus { border-color: #3b82f6; }

/* ============================================================
   Shape picker
   ============================================================ */
#shape-picker {
  display: flex;
  align-items: center;
  gap: 2px;
}

.shape-label {
  font-size: 11px;
  color: #94a3b8;
  margin-right: 2px;
  white-space: nowrap;
}

.shape-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: #334155;
  color: #e2e8f0;
  border: 1px solid #475569;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}

.shape-btn svg {
  width: 24px;
  height: 24px;
}

.shape-btn:hover { background: #475569; }
.shape-btn.active {
  background: #2563eb;
  border-color: #3b82f6;
  color: #fff;
}

/* Shape select in properties panel */
.prop-group select {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  font-size: 13px;
  font-family: inherit;
  color: #1e293b;
  background: #f8fafc;
  outline: none;
  cursor: pointer;
}

.prop-group select:focus {
  border-color: #2563eb;
  background: #fff;
  box-shadow: 0 0 0 2px rgba(37,99,235,0.15);
}

/* Colour input row */
.color-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.color-row input[type="color"] {
  width: 36px;
  height: 28px;
  padding: 1px 2px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  background: #f8fafc;
  cursor: pointer;
  flex-shrink: 0;
}

.color-row input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-row input[type="color"]::-webkit-color-swatch { border: none; border-radius: 2px; }

.color-hex {
  font-size: 12px;
  font-family: monospace;
  color: #475569;
  flex: 1;
}

.color-reset {
  font-size: 11px;
  padding: 2px 6px;
  background: none;
  border: 1px solid #e2e8f0;
  border-radius: 3px;
  cursor: pointer;
  color: #94a3b8;
  font-family: inherit;
  transition: border-color 0.1s, color 0.1s;
}

.color-reset:hover { border-color: #94a3b8; color: #475569; }

/* ============================================================
   Opacity control
   ============================================================ */
.opacity-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.opacity-row input[type="range"] {
  flex: 1;
  height: 4px;
  cursor: pointer;
  accent-color: #2563eb;
}

.opacity-row span {
  font-size: 12px;
  font-family: monospace;
  color: #475569;
  min-width: 34px;
  text-align: right;
  flex-shrink: 0;
}

/* ============================================================
   Font controls (size select + B/I/U toggles)
   ============================================================ */
.font-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.font-size-select {
  flex: 1;
  min-width: 0;
  padding: 4px 6px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  font-size: 12px;
  font-family: inherit;
  color: #1e293b;
  background: #f8fafc;
  outline: none;
  cursor: pointer;
}

.font-size-select:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37,99,235,0.15);
}

.font-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  background: #f8fafc;
  color: #475569;
  cursor: pointer;
  font-size: 13px;
  font-family: serif;
  flex-shrink: 0;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  user-select: none;
}

.font-btn:hover { border-color: #94a3b8; background: #f1f5f9; }

.font-btn.active {
  background: #2563eb;
  border-color: #1d4ed8;
  color: #fff;
}

/* ── Floating align/distribute popup ──────────────────────────── */
.align-popup {
  position: fixed;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 6px;
  padding: 6px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.align-popup[hidden] { display: none; }

.align-popup-row {
  display: flex;
  gap: 3px;
}

.align-popup-divider {
  border-top: 1px solid #334155;
  margin: 2px 0;
}

.align-popup-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  background: #334155;
  border: 1px solid #475569;
  border-radius: 4px;
  color: #e2e8f0;
  cursor: pointer;
}

.align-popup-btn:hover {
  background: #475569;
  border-color: #64748b;
}

.align-popup-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

#btn-align-toggle.active {
  background: #2563eb;
  border-color: #1d4ed8;
}

/* ── Label position picker (3×3 grid) ─────────────────────────── */
.pos-picker {
  display: inline-grid;
  grid-template-columns: repeat(3, 22px);
  gap: 3px;
}

.pos-btn {
  width: 22px;
  height: 22px;
  border: 1px solid #cbd5e1;
  border-radius: 3px;
  background: #f8fafc;
  cursor: pointer;
  padding: 0;
  position: relative;
}

.pos-btn::after {
  content: '';
  position: absolute;
  width: 5px;
  height: 5px;
  background: #94a3b8;
  border-radius: 50%;
}

.pos-btn[data-pos='tl']::after { top: 3px; left: 3px; }
.pos-btn[data-pos='tm']::after { top: 3px; left: 50%; transform: translateX(-50%); }
.pos-btn[data-pos='tr']::after { top: 3px; right: 3px; }
.pos-btn[data-pos='ml']::after { top: 50%; left: 3px; transform: translateY(-50%); }
.pos-btn[data-pos='mm']::after { top: 50%; left: 50%; transform: translate(-50%, -50%); }
.pos-btn[data-pos='mr']::after { top: 50%; right: 3px; transform: translateY(-50%); }
.pos-btn[data-pos='bl']::after { bottom: 3px; left: 3px; }
.pos-btn[data-pos='bm']::after { bottom: 3px; left: 50%; transform: translateX(-50%); }
.pos-btn[data-pos='br']::after { bottom: 3px; right: 3px; }

.pos-btn:hover {
  border-color: #3b82f6;
  background: #eff6ff;
}

.pos-btn.active {
  border-color: #3b82f6;
  background: #dbeafe;
}

.pos-btn.active::after { background: #3b82f6; }