/* Reset & base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  overflow: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #05070D;
  color: #F5F7FA;
}

/* Dark theme (default) */
body.dark-theme {
  --bg: #05070D;
  --panel: #0E1624;
  --panel2: #111C2E;
  --border: #243044;
  --blue: #2F80ED;
  --cyan: #00D1FF;
  --green: #22C55E;
  --amber: #F59E0B;
  --red: #EF4444;
  --purple: #8B5CF6;
  --text: #F5F7FA;
  --muted: #9AA4B2;
  --canvas-bg: #0A0F1A;
  --grid-color: #1E293B;
  --block-bg: #111C2E;
  --block-border: #243044;
  --active-block: rgba(47,128,237,0.2);
}
body.light-theme {
  --bg: #F5F7FA;
  --panel: #FFFFFF;
  --panel2: #EEF2F7;
  --border: #CBD5E1;
  --blue: #2563EB;
  --cyan: #0891B2;
  --green: #16A34A;
  --amber: #D97706;
  --red: #DC2626;
  --purple: #7C3AED;
  --text: #0F172A;
  --muted: #64748B;
  --canvas-bg: #E2E8F0;
  --grid-color: #CBD5E1;
  --block-bg: #FFFFFF;
  --block-border: #CBD5E1;
  --active-block: rgba(37,99,235,0.15);
}

/* Layout */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1rem;
  height: 3rem;
}
.toolbar-left { display: flex; align-items: center; gap: 1rem; }
.logo { font-weight: 700; color: var(--blue); }
.project-name {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
}
.toolbar-actions { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.icon-btn {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: var(--text);
  padding: 0.3rem;
  cursor: pointer;
  border-radius: 4px;
}
.icon-btn:hover { background: var(--panel2); }

.workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
}
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  width: 240px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.right-sidebar { border-right: none; border-left: 1px solid var(--border); }
.sidebar-tabs {
  display: flex;
  flex-wrap: wrap;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
}
.tab {
  background: transparent;
  border: none;
  padding: 0.4rem 0.6rem;
  color: var(--muted);
  font-size: 0.8rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--blue); border-bottom-color: var(--blue); }
.block-list {
  padding: 0.5rem;
  overflow-y: auto;
  flex: 1;
}
.library-block {
  background: var(--block-bg);
  border: 1px solid var(--block-border);
  border-radius: 8px;
  padding: 0.6rem;
  margin-bottom: 0.4rem;
  cursor: grab;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  border-left: 4px solid var(--blue);
}
.library-block:active { cursor: grabbing; }

.canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--canvas-bg);
}
.canvas-controls {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 10;
  display: flex;
  gap: 0.5rem;
  background: var(--panel);
  padding: 0.3rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.canvas-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
}
.logic-canvas {
  width: 4000px;
  height: 4000px;
  background-image: radial-gradient(var(--grid-color) 1px, transparent 1px);
  background-size: 20px 20px;
  position: relative;
  transform-origin: 0 0;
}
.connections-svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.connection-line {
  stroke: var(--blue);
  stroke-width: 2;
  fill: none;
  marker-end: url(#arrowhead);
}
.draggable-block {
  position: absolute;
  background: var(--block-bg);
  border: 1px solid var(--block-border);
  border-radius: 8px;
  padding: 0.6rem;
  min-width: 120px;
  font-size: 0.85rem;
  user-select: none;
  border-left: 5px solid var(--blue);
  transition: box-shadow 0.15s;
}
.draggable-block.selected { border-color: var(--blue); box-shadow: 0 0 0 2px var(--blue); }
.draggable-block.sim-active { box-shadow: 0 0 0 2px var(--green); background: var(--active-block); }
.block-icon { margin-right: 0.4rem; }
.warning-badge {
  position: absolute;
  top: -6px; right: -6px;
  background: var(--amber);
  color: black;
  border-radius: 50%;
  width: 18px; height: 18px;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mini-map {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  width: 120px;
  height: 80px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  opacity: 0.7;
}
.canvas-footer {
  background: var(--panel);
  padding: 0.2rem 0.5rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  border-top: 1px solid var(--border);
}

.bottom-panel {
  background: var(--panel);
  border-top: 1px solid var(--border);
  height: 180px;
  display: flex;
  flex-direction: column;
}
.bottom-tabs {
  display: flex;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.bottom-content {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.status-bar {
  display: flex;
  background: var(--panel);
  border-top: 1px solid var(--border);
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  color: var(--muted);
  gap: 1rem;
  flex-wrap: wrap;
}

/* Inspector styles */
.inspector-content {
  padding: 0.5rem;
}
.property-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
}
.property-row input, .property-row select {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.2rem;
  width: 60%;
  border-radius: 4px;
}

/* Light theme overrides */
body.light-theme .toolbar, body.light-theme .sidebar, body.light-theme .bottom-panel {
  background: var(--panel);
}