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

:root {
  --bg: #ffffff;
  --bg-subtle: #f5f5f5;
  --bg-hover: #e8e8e8;
  --border: #e0e0e0;
  --text: #212121;
  --text-secondary: #757575;
  --accent: #2196F3;
  --accent-hover: #1976D2;
  --accent-light: #E3F2FD;
  --danger: #F44336;
  --danger-hover: #D32F2F;
  --toolbar-height: 52px;
  --sidebar-width: 240px;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.12);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg-subtle);
}

/* ===== Toolbar ===== */
#toolbar {
  display: flex;
  align-items: center;
  height: var(--toolbar-height);
  padding: 0 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  gap: 4px;
  z-index: 100;
  user-select: none;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 2px;
}

.toolbar-separator {
  width: 1px;
  height: 28px;
  background: var(--border);
  margin: 0 8px;
}

.toolbar-spacer {
  flex: 1;
}

/* Tool buttons */
.tool-btn, .action-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.tool-btn:hover, .action-btn:hover {
  background: var(--bg-subtle);
  color: var(--text);
}

.tool-btn.active {
  background: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent);
}

.tool-btn svg, .action-btn svg {
  flex-shrink: 0;
}

/* Toolbar info section */
.toolbar-info {
  gap: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.snap-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-secondary);
}

.snap-toggle input[type="checkbox"] {
  accent-color: var(--accent);
}

.fit-view-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.fit-view-btn:hover {
  background: var(--accent);
  color: #fff;
}

.zoom-display {
  padding: 3px 8px;
  background: var(--bg-subtle);
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
  min-width: 48px;
  text-align: center;
}

.cursor-pos {
  font-variant-numeric: tabular-nums;
  min-width: 120px;
  text-align: right;
}

/* ===== Main Layout ===== */
#main-content {
  display: flex;
  height: calc(100vh - var(--toolbar-height));
}

/* ===== Sidebar ===== */
#sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--bg);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.panel-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  padding: 12px 14px 8px;
  border-top: 1px solid var(--border);
}

#properties-panel .panel-title {
  border-top: none;
}

.props-hint {
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

#props-content {
  padding-bottom: 8px;
}

/* Property fields */
.prop-field {
  display: flex;
  align-items: center;
  padding: 4px 14px;
  gap: 8px;
}

.prop-field label {
  font-size: 11px;
  color: var(--text-secondary);
  min-width: 60px;
  flex-shrink: 0;
}

.prop-field input[type="number"],
.prop-field input[type="text"] {
  flex: 1;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font);
  outline: none;
  min-width: 0;
}

.prop-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.prop-field input[type="color"] {
  width: 32px;
  height: 26px;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  padding: 2px;
}

.prop-field select {
  flex: 1;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font);
  outline: none;
  background: var(--bg);
  min-width: 0;
}

.prop-field select:focus {
  border-color: var(--accent);
}

.prop-field .prop-value {
  font-size: 12px;
  color: var(--text);
}

.prop-btn {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font);
  transition: all 0.15s;
}

.prop-btn:hover {
  background: var(--bg-subtle);
}

.prop-btn.danger {
  color: var(--danger);
  border-color: var(--danger);
}

.prop-btn.danger:hover {
  background: #FFEBEE;
}

/* Rooms list */
.room-item {
  display: flex;
  align-items: center;
  padding: 6px 14px;
  gap: 8px;
  cursor: pointer;
  transition: background 0.1s;
}

.room-item:hover {
  background: var(--bg-subtle);
}

.room-item.selected {
  background: var(--accent-light);
}

.room-color-swatch {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.room-name {
  font-size: 12px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.room-area {
  font-size: 11px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

/* Rooms summary */
#rooms-summary:empty {
  display: none;
}

#rooms-summary {
  border-top: 1px solid var(--border);
  padding: 8px 14px 10px;
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.summary-label {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.summary-value {
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

/* Shortcuts */
.shortcuts-list {
  padding: 4px 14px 12px;
}

.shortcut {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  font-size: 11px;
  color: var(--text-secondary);
}

.shortcut kbd {
  display: inline-block;
  padding: 1px 5px;
  font-size: 10px;
  font-family: var(--font);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 3px;
  min-width: 22px;
  text-align: center;
}

/* ===== Canvas ===== */
#canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  cursor: crosshair;
  touch-action: none; /* Prevent browser from hijacking pointer events for gestures */
}

#planner-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Cursor modes — applied to container AND canvas child so pointer-capture
   on either element still shows the correct cursor. */
#canvas-container.cursor-select,
#canvas-container.cursor-select #planner-canvas { cursor: default; }
#canvas-container.cursor-wall,
#canvas-container.cursor-wall #planner-canvas { cursor: crosshair; }
#canvas-container.cursor-door,
#canvas-container.cursor-door #planner-canvas { cursor: pointer; }
#canvas-container.cursor-window,
#canvas-container.cursor-window #planner-canvas { cursor: pointer; }
#canvas-container.cursor-label,
#canvas-container.cursor-label #planner-canvas { cursor: text; }
#canvas-container.cursor-grab,
#canvas-container.cursor-grab #planner-canvas { cursor: grab; }
#canvas-container.cursor-grabbing,
#canvas-container.cursor-grabbing #planner-canvas { cursor: grabbing; }
#canvas-container.cursor-move,
#canvas-container.cursor-move #planner-canvas { cursor: move; }

/* Grab → grabbing via :active pseudo-class (Chromium respects this during press) */
#canvas-container.cursor-grab:active,
#canvas-container.cursor-grab:active #planner-canvas { cursor: grabbing; }

/* ===== Label Input Overlay ===== */
.label-input-overlay {
  position: absolute;
  z-index: 50;
}

.label-input-overlay input {
  border: 2px solid var(--accent);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  min-width: 100px;
  background: white;
  box-shadow: var(--shadow-md);
}

/* ===== Scrollbar ===== */
#sidebar::-webkit-scrollbar {
  width: 6px;
}

#sidebar::-webkit-scrollbar-track {
  background: transparent;
}

#sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

#sidebar::-webkit-scrollbar-thumb:hover {
  background: #bdbdbd;
}

/* ===== Toast Notification ===== */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 10px 20px;
  background: var(--text);
  color: white;
  border-radius: var(--radius);
  font-size: 13px;
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: transform 0.3s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}