/* ══════════════════════════════════════════════════════════════════════════ TEMPORARY PROTOTYPE — Room Creator "Refined Steampunk Explorer" concept ══════════════════════════════════════════════════════════════════════════ Activation: opt-in only, via the URL query param `?prototype=steampunk-room-creator`. The synchronous script in lobby.html reads that param and sets `` — this file never applies on its own, and no query param means neither prototype is active. Mutually exclusive with `?prototype=royal-tactile`. Scope: every rule below is prefixed with `html[data-rc-proto="steampunk-room-creator"] #screen-join …` (or a descendant of it). It touches NOTHING outside the Room Creator's "create-options" panel and the small amount of shared chrome above it (.rooms-hd, #name-field-wrap, #primary-actions) that this prototype explicitly de-emphasizes while the form is open — see the chrome-management script at the end of lobby.html. Status: presentation-only prototype for design review. No production JavaScript reads any class or selector introduced here. Every real control keeps its original id, name, value, and event binding from lobby.html / lobby.js — this file only repaints them. The one piece of prototype-only JS (chrome de-emphasis) is additive and disclosed in lobby.html; it never touches CREATE_GAME's payload or validation. Assets: no raster/photographic textures are used — this pass is CSS + inline SVG only (compass, gear, back-chevron), because no image-generation tool was available while building it. Wood grain, cream enamel, and brass are approximated with layered gradients and shadows rather than photographic texture. See the implementation report for the fidelity gap this leaves versus the reference PNG. Revert: delete the tag, the `steampunk-room-creator` branch of the activation script, the chrome-management