:root{--bg-page:#ffffff;--bg-card:#ffffff;--bg-surface:#f9fafb;--bg-hover:#f3f4f6;--bg-input:#ffffff;--text-primary:#111827;--text-secondary:#6b7280;--text-muted:#9ca3af;--border:#e5e7eb;--border-light:#f3f4f6;--bg-message-user:#f3f4f6;--bg-message-agent:#dbeafe;--tone-ok-bg:#f0fdf4;--tone-ok-border:#86efac;--tone-ok-fg:#166534;--tone-warn-bg:#fffbeb;--tone-warn-border:#fcd34d;--tone-warn-fg:#92400e;--tone-warn-fg-deep:#78350f;--tone-error-bg:#fef2f2;--tone-error-border:#fca5a5;--tone-error-fg:#991b1b}[data-theme=dark]{--bg-page:#0f172a;--bg-card:#1e293b;--bg-surface:#1e293b;--bg-hover:#334155;--bg-input:#0f172a;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--border:#334155;--border-light:#1e293b;--bg-message-user:#334155;--bg-message-agent:#1e3a5f;--tone-ok-bg:#0d2818;--tone-ok-border:#22734a;--tone-ok-fg:#6ee7b7;--tone-warn-bg:#2a2000;--tone-warn-border:#a17c1a;--tone-warn-fg:#fcd34d;--tone-warn-fg-deep:#fbbf24;--tone-error-bg:#2d1114;--tone-error-border:#9c3d3d;--tone-error-fg:#fca5a5;color-scheme:dark}body{margin:0;background-color:var(--bg-page);color:var(--text-primary);transition:background-color .2s,color .2s}input,select,textarea{background-color:var(--bg-input);color:var(--text-primary);border-color:var(--border)}[data-theme=dark] option{background-color:var(--bg-card);color:var(--text-primary)}