/* =============================================================
   layout.css
   Main three-column flex layout: left pane (Blockly workspace
   or text editor), output panel, and simulator panel.
   Also covers the board selector bar, mode-switch tabs, and
   draggable resize handles between columns.
   ============================================================= */

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

/* ---------------------------------------------------------------
   Left pane - hosts the Blockly div OR the text editor pane
   --------------------------------------------------------------- */
#left-pane {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

/* ---------------------------------------------------------------
   Board selector bar
   Sits between the topbar and the main content area.
   --------------------------------------------------------------- */
#board-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: #010409;
  border-bottom: 1px solid #21262d;
  flex-shrink: 0;
}
#board-bar label {
  font-size: 11px;
  color: #8b949e;
  font-weight: 600;
  white-space: nowrap;
}
#board-select {
  background: #0d1117;
  color: #c9d1d9;
  border: 1px solid #30363d;
  border-radius: 5px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
}
#board-select:focus { outline: none; border-color: #534AB7; }

/* Info string showing pin counts, flash size etc. */
#board-info { font-size: 10px; color: #8b949e; margin-left: auto; }
.board-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
  background: #1a3a5c;
  color: #79c0ff;
  margin-left: 6px;
}

/* ---------------------------------------------------------------
   Mode-switch tab bar (Blocks vs MicroPython Editor)
   --------------------------------------------------------------- */
#mode-bar {
  display: flex;
  background: #0f1e3a;
  border-bottom: 1px solid #0f3460;
}
.mode-btn {
  padding: 7px 18px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: #aaa;
  border-bottom: 3px solid transparent;
  transition: all .15s;
}
.mode-btn.active {
  color: #e94560;
  border-bottom-color: #e94560;
  background: #16213e;
}

/* ---------------------------------------------------------------
   Blockly workspace div
   Blockly injects its canvas here; the flex: 1 makes it fill
   the remaining height of the left pane.
   --------------------------------------------------------------- */
#blockly-div { flex: 1; background: #0d1117; }

/* ---------------------------------------------------------------
   Draggable resize handles between panels
   The ::after pseudo-element is the visible grip indicator.
   .dragging class is added via JS while the user is dragging.
   --------------------------------------------------------------- */
.resize-handle {
  width: 5px;
  cursor: col-resize;
  background: transparent;
  flex-shrink: 0;
  position: relative;
  z-index: 10;
  transition: background .15s;
}
.resize-handle:hover,
.resize-handle.dragging { background: #534AB7; }

.resize-handle::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  height: 40px; width: 3px;
  border-radius: 3px;
  background: #334;
  transition: background .15s;
}
.resize-handle:hover::after,
.resize-handle.dragging::after { background: #7f77dd; }