:root {
  color-scheme: dark;
  --brass: #d8b775;
  --cream: #f1e5c8;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: #101918; }
body { font-family: Georgia, "Times New Roman", serif; }
#scene { position: fixed; inset: 0; display: block; }

/* A narrow metal frame leaves the workshop itself as the main attraction. */
body::after {
  content: "";
  position: fixed;
  inset: 9px;
  border: 1px solid #b3925159;
  outline: 8px solid #0e100d;
  box-shadow: inset 0 0 0 3px #0e100d66, 0 0 0 1px #483b26;
  pointer-events: none;
}
/* Compact nameplate, sized to leave the factory windows visible. */
.masthead {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: min(410px, calc(100% - 44px));
  padding: 11px 18px 8px;
  text-align: center;
  color: var(--cream);
  background: #111b19e6;
  border: 1px solid #9b7e45;
  box-shadow: 0 3px 12px #0005;
}
.masthead h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: #e1c58a;
  white-space: nowrap;
}
.masthead h1 span { font-size: 0.6em; vertical-align: middle; letter-spacing: 0.5px; }
.masthead .sub { margin: 5px 0 4px; font-size: 13px; line-height: 1.4; color: #d2c9b3; }
.masthead nav { display: flex; justify-content: center; gap: 20px; }
.masthead nav a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  font-size: 13px;
  color: #dfc48a;
  text-decoration: underline;
  text-decoration-color: #8e704380;
  text-underline-offset: 4px;
}
.masthead nav a:hover { color: #fff0c9; text-decoration-color: currentColor; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid #8de8d9; outline-offset: 4px; }
.controls { position: fixed; right: 26px; top: 26px; display: flex; gap: 10px; }
.controls button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 42px;
  min-height: 42px;
  padding: 5px;
  color: #efce86;
  font: 22px Georgia, serif;
  background: linear-gradient(135deg, #3e3a28, #171d18 60%, #312a1e);
  border: 1px solid #b58d4c;
  border-radius: 50%;
  box-shadow: 0 3px 14px #0008, inset 0 0 0 3px #121913, inset 0 0 0 4px #80643a;
  cursor: pointer;
}
.controls button:hover { color: #fff0be; border-color: #f7d692; }
#sfx.muted { color: #ae9b7b; }
#sfx.muted > span:first-child { text-decoration: line-through; }
.controls button[aria-pressed="true"] { box-shadow: 0 3px 14px #0008, inset 0 0 0 3px #121913, inset 0 0 0 4px #c6a464; }
.hint {
  position: fixed;
  left: 50%;
  bottom: 58px;
  transform: translateX(-50%);
  width: max-content;
  max-width: calc(100% - 40px);
  margin: 0;
  padding: 4px 10px;
  color: #dfd0ae;
  font-size: 14px;
  line-height: 1.4;
  text-align: center;
  text-shadow: 0 1px 3px #000, 0 0 8px #000;
  pointer-events: none;
}
.room-navigation { display: none; }
.nojs { position: fixed; inset: auto 20px 30vh; text-align: center; color: var(--cream); font-size: 17px; }
.nojs a { color: #80e1cd; }
@media (max-width: 1100px) {
  .controls { flex-direction: column; right: 21px; top: 22px; gap: 8px; }
}
@media (max-width: 720px) {
  .masthead { top: 20px; width: calc(100% - 42px); padding: 10px 9px 6px; }
  .masthead h1 { font-size: clamp(19px, 5.7vw, 24px); letter-spacing: 1px; }
  .masthead .sub { font-size: 12px; max-width: 290px; margin: 5px auto 3px; }
  .masthead nav a { min-height: 32px; }
  .controls { top: 148px; bottom: auto; right: 50%; transform: translateX(50%); flex-direction: row; }
  .controls button { width: 42px; min-height: 42px; }
  .hint { display: none; }
  .room-navigation { position: fixed; display: grid; gap: 5px; bottom: 37px; left: 28px; right: 28px; color: var(--cream); text-align: center; padding: 8px 16px; background: #111b19ee; border: 1px solid #897244; }
  .room-navigation label { font-size: 14px; }
  .room-navigation input { width: 100%; height: 22px; margin: 0; accent-color: #d2af67; cursor: ew-resize; }
}
@media (max-height: 560px) and (min-width: 721px) {
  .masthead { top: 17px; padding: 7px 18px 4px; }
  .masthead h1 { font-size: 22px; }
  .hint { bottom: 35px; padding: 5px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}