/* Dark Mode Styles */
html.dark-mode {
  --gsu-white: #1a1a2e;
  --gsu-light-gray: #16213e;
  --gsu-medium-gray: #2a2a4a;
  --gsu-dark-gray: #e0e0e0;
  --gsu-black: #ffffff;
}
html.dark-mode body { background-color: var(--gsu-white); color: var(--gsu-dark-gray); }
html.dark-mode .site-content { color: var(--gsu-dark-gray); }
html.dark-mode h1, html.dark-mode h2, html.dark-mode h3, html.dark-mode h4 { color: #ffffff; }
html.dark-mode a { color: #6daaff; }
html.dark-mode .post-card { background: var(--gsu-light-gray); border-color: var(--gsu-medium-gray); }
html.dark-mode .site-footer { background-color: #0a0a1a; }
html.dark-mode .a11y-toolbar-panel { background: var(--gsu-light-gray); border-color: #0039A6; color: var(--gsu-dark-gray); }
html.dark-mode .a11y-toolbar-panel button { background: var(--gsu-white); color: var(--gsu-dark-gray); border-color: var(--gsu-medium-gray); }