:root {
  --bg: #0d0d0d;
  --fg: #e8e8e8;
  --violet: #a78bfa;
  --mono: ui-monospace, "SF Mono", "Fira Code", Menlo, Consolas, monospace;
}

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  overflow: hidden;
}

#backdrop,
#room {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}

#backdrop {
  background: var(--bg) url("../assets/world/poster.jpg") center / cover no-repeat;
}

#room {
  display: block;
  touch-action: none;
  cursor: grab;
  opacity: 0;
  transition: opacity 1.2s ease;
}

#room.dragging { cursor: grabbing; }

[data-mode="room"] #room { opacity: 1; }
[data-mode="fallback"] #room { display: none; }

#loader {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%);
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--violet);
  background: rgb(13 13 13 / 0.7);
  border: 1px solid rgb(167 139 250 / 0.3);
  transition: opacity 0.4s;
}

body:not([data-mode="loading"]) #loader { opacity: 0; pointer-events: none; }

#room.over-screen { cursor: pointer; }

#edit-panel {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 17rem;
  padding: 0.75rem;
  display: grid;
  gap: 0.5rem;
  font-size: 0.75rem;
  background: rgb(13 13 13 / 0.85);
  border: 1px solid rgb(167 139 250 / 0.4);
}

#edit-panel p { margin: 0; }
#edit-panel textarea { font: inherit; font-size: 0.65rem; }

/* ---------- HUD over the room ---------- */

#hud {
  position: fixed;
  inset: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  pointer-events: none;
  text-shadow: 0 1px 6px rgb(0 0 0 / 0.8);
}

#hud > * { pointer-events: auto; }

.hud-brand { display: grid; gap: 0.15rem; pointer-events: none !important; }
.hud-brand strong { font-size: 1.05rem; letter-spacing: 0.04em; }
.hud-brand span { font-size: 0.74rem; color: #b9c5d2; }

.hud-menu { position: relative; font-size: 0.8rem; }

.hud-menu summary {
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  list-style: none;
  background: rgb(13 13 13 / 0.6);
  border: 1px solid rgb(255 255 255 / 0.2);
  border-radius: 0.5rem;
  backdrop-filter: blur(8px);
}

.hud-menu summary::-webkit-details-marker { display: none; }
.hud-menu summary:hover,
.hud-menu[open] summary { border-color: #38bdf8; color: #38bdf8; }

.hud-menu nav {
  position: absolute;
  right: 0;
  top: calc(100% + 0.4rem);
  display: grid;
  min-width: 11rem;
  padding: 0.35rem;
  text-shadow: none;
  background: rgb(13 13 13 / 0.9);
  border: 1px solid rgb(255 255 255 / 0.15);
  border-radius: 0.6rem;
  backdrop-filter: blur(8px);
}

.hud-menu a {
  padding: 0.45rem 0.7rem;
  color: var(--fg);
  text-decoration: none;
  border-radius: 0.35rem;
}

.hud-menu a:hover { color: #04121d; background: #38bdf8; }

.hud-hint {
  position: absolute;
  left: 50%;
  bottom: 1.5rem;
  margin: 0;
  padding: 0.45rem 0.9rem;
  transform: translateX(-50%);
  font-size: 0.74rem;
  white-space: nowrap;
  text-shadow: none;
  background: rgb(13 13 13 / 0.6);
  border: 1px solid rgb(255 255 255 / 0.15);
  border-radius: 99rem;
  pointer-events: none !important;
  opacity: 0;
  transition: opacity 0.6s 0.8s;
}

[data-mode="room"] .hud-hint { opacity: 1; }

@media (max-width: 520px) {
  .hud-brand span { display: none; }
  .hud-hint { font-size: 0.68rem; }
}

[data-mode="loading"] #room { pointer-events: none; }