:root{--primary-color:#0066cc;--text-color:#1f2937;--text-secondary:#6b7280;--bg-color:#ffffff;--bg-secondary:#f9fafb;--bg-tertiary:#f3f4f6;--border-color:#e5e7eb;--sidebar-width:260px;--body-font:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;--sans-font:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif}body.dark-mode.dark-mode-soft{--text-color:#f5f5f5;--text-secondary:#a3a3a3;--bg-color:#1a1a1a;--bg-secondary:#262626;--bg-tertiary:#404040;--border-color:#525252}body.dark-mode.dark-mode-lights-out{--text-color:#e5e7eb;--text-secondary:#9ca3af;--bg-color:#000000;--bg-secondary:#0a0a0a;--bg-tertiary:#1a1a1a;--border-color:#2a2a2a}body.dark-mode.dark-mode-blue{--text-color:#e3e8ef;--text-secondary:#94a3b8;--bg-color:#0f1419;--bg-secondary:#1a1f2e;--bg-tertiary:#252b3b;--border-color:#384152}body{font-family:var(--body-font)}h1{font-size:2.5rem;border-bottom:none}h2{border-bottom:none}.sidebar{padding:1.5rem 1rem}p{text-align:left}