/* Theme transitions — smooth switch between dark and light */
html {
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-elevated); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Selection */
::selection { background: var(--accent); color: #fff; }

/* Theme toggle button */
#theme-toggle {
  position: fixed;
  top: var(--space-sm);
  right: var(--space-sm);
  z-index: var(--z-overlay);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 50%;
  width: 2.2rem;
  height: 2.2rem;
  font-size: 1rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
#theme-toggle:hover { background: var(--bg-elevated); }

/* Install prompt banner */
#install-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  z-index: var(--z-overlay);
  font-size: 0.9rem;
}
#install-banner.hidden { display: none; }