/* layout.css — App grid layout for RoomVision */

#app {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--toolbar-height) 1fr;
  height: 100vh;
  width: 100vw;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  letter-spacing: var(--letter-spacing);
}

.toolbar {
  grid-column: 1 / -1;
  grid-row: 1;
  z-index: var(--z-toolbar);
}

.sidebar {
  grid-column: 1;
  grid-row: 2;
  z-index: var(--z-sidebar);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viewport {
  grid-column: 2;
  grid-row: 2;
  position: relative;
  overflow: hidden;
  background-color: var(--color-bg-primary);
}

/* Focus mode — hide all UI, full viewport */
#app.focus-mode .toolbar {
  display: none;
}

#app.focus-mode .sidebar {
  display: none;
}

#app.focus-mode {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
}

#app.focus-mode .viewport {
  grid-column: 1;
  grid-row: 1;
}

.focus-exit-btn {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 999;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  backdrop-filter: blur(8px);
}

.focus-exit-btn:hover {
  background: var(--color-accent);
  color: white;
  transform: scale(1.1);
}

/* Responsive — sidebar collapses at <768px */
@media (max-width: 768px) {
  #app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: var(--toolbar-height);
    bottom: 0;
    width: var(--sidebar-width);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: var(--z-modal);
    background-color: var(--color-bg-secondary);
  }

  .sidebar.sidebar--open {
    transform: translateX(0);
  }

  .viewport {
    grid-column: 1;
  }
}