body {
  display: grid;
  grid-template-rows: auto 1fr;
  grid-template-columns: 1fr;
  height: 100vh;
  margin: 0;
  overflow: hidden;
}

#app-main {
  display: grid;
  grid-template-columns: auto 1fr auto;
  overflow: hidden;
  position: relative;
}

#sidebar, #inspector {
  background-color: var(--site-surface);
  border-right: 1px solid var(--site-border);
  height: 100%;
  transition: width var(--transition), min-width var(--transition);
  display: flex;
  flex-direction: column;
}
#sidebar {
  overflow-y: auto;
}

#inspector {
  border-right: none;
  border-left: 1px solid var(--site-border);
}

#sidebar {
  width: 260px;
  min-width: 260px;
}

#sidebar.collapsed {
  width: 0;
  min-width: 0;
  overflow: hidden;
}

#inspector {
  width: 280px;
  min-width: 280px;
}

#inspector.collapsed {
  width: 0;
  min-width: 0;
  overflow: hidden;
}

#canvas-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  background-color: var(--site-bg-secondary);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}

.modal-overlay.hidden {
  display: none;
}

.modal-content {
  background-color: var(--site-surface);
  padding: 24px;
  border-radius: var(--site-radius-lg);
  box-shadow: var(--site-shadow-lg);
  max-width: 400px;
  width: 100%;
  border: 1px solid var(--site-border-light);
}

[data-site-theme="dark"] .modal-content {
  background: rgba(26, 29, 39, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary {
  background-color: var(--site-accent);
  color: var(--site-accent-text);
  border: none;
  padding: 8px 16px;
  border-radius: var(--site-radius);
  cursor: pointer;
  font-weight: 500;
  transition: background-color var(--transition);
}

.btn-primary:hover {
  background-color: var(--site-accent-hover);
}
.shortcut-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}
.shortcut-list li {
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
}
kbd {
  background: var(--site-border);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--site-font-mono);
  font-size: 11px;
}