/* ===== 3D world ===== */
.world-body { margin: 0; overflow: hidden; background: #f2efe2; overscroll-behavior: none; touch-action: none; }
#worldCanvas { position: fixed; inset: 0; width: 100%; height: 100%; display: block; outline: none; }

.w-hud { position: fixed; inset: 0; pointer-events: none; z-index: 5; }
.w-hud[hidden] { display: none; }
.w-hud > * { pointer-events: auto; }

.w-back, .w-list {
  position: absolute; top: max(14px, env(safe-area-inset-top));
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px; font-size: 14px; font-weight: 500; color: var(--ink);
  background: rgba(255,255,255,0.88); border: 1px solid var(--line); border-radius: 7px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: background .15s;
}
.w-back { left: 14px; }
.w-list { left: 168px; }
.w-back:hover, .w-list:hover { background: #fff; }
.w-back .material-symbols-rounded, .w-list .material-symbols-rounded { font-size: 18px; }

.w-place {
  position: absolute; top: max(14px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%);
  padding: 9px 16px; border-radius: 7px; pointer-events: none;
  font-family: var(--ff-heading); font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink); background: rgba(255,255,255,0.88); border: 1px solid var(--line);
  border-left: 4px solid var(--pc, var(--accent));
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: border-color .25s;
}
.w-map {
  position: absolute; top: max(14px, env(safe-area-inset-top)); right: 14px;
  width: 132px; height: 132px; border-radius: 7px; pointer-events: none;
  background: rgba(255,255,255,0.8); border: 1px solid var(--line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.w-keys {
  position: absolute; left: 14px; bottom: max(14px, env(safe-area-inset-bottom));
  display: flex; flex-wrap: wrap; gap: 6px 14px; max-width: min(520px, calc(100vw - 28px));
  padding: 10px 14px; border-radius: 7px; pointer-events: none;
  background: rgba(255,255,255,0.82); border: 1px solid var(--line); font-size: 12.5px; color: var(--ink-soft);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.w-keys b { font-weight: 600; color: var(--ink); letter-spacing: .02em; margin-right: 4px; }

.w-prompt {
  position: absolute; left: 50%; bottom: max(86px, calc(env(safe-area-inset-bottom) + 70px)); transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px; padding: 10px 16px 10px 10px; border-radius: 7px; pointer-events: none;
  background: var(--ink); color: var(--bg); box-shadow: 0 16px 30px -16px rgba(10,14,8,0.6);
  animation: w-pop .18s ease;
}
.w-prompt[hidden] { display: none; }
.w-prompt-key {
  font-family: var(--ff-heading); font-size: 12px; font-weight: 700; letter-spacing: .04em;
  padding: 5px 9px; border-radius: 5px; background: var(--accent); color: #fff;
}
.w-prompt-name { font-size: 15px; font-weight: 500; }
@keyframes w-pop { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }

.w-stick {
  position: absolute; left: max(22px, env(safe-area-inset-left)); bottom: max(26px, env(safe-area-inset-bottom));
  width: 128px; height: 128px; border-radius: 50%;
  background: rgba(255,255,255,0.55); border: 1.5px solid rgba(25,27,18,0.25); touch-action: none;
}
.w-stick[hidden], .w-act[hidden] { display: none; }
.w-stick-knob {
  position: absolute; left: 50%; top: 50%; width: 54px; height: 54px; margin: -27px 0 0 -27px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 6px 14px -4px rgba(10,14,8,0.5); pointer-events: none;
}
.w-act {
  position: absolute; right: 18px; bottom: max(30px, env(safe-area-inset-bottom));
  display: inline-flex; align-items: center; gap: 8px; padding: 14px 20px; font: inherit; font-size: 15px; font-weight: 500;
  color: #fff; background: var(--accent); border: 0; border-radius: 7px; box-shadow: 0 14px 26px -14px rgba(10,14,8,0.6);
}
.w-act:active { transform: scale(.97); }
.touch .w-keys { display: none; }
.touch .w-prompt { bottom: max(176px, calc(env(safe-area-inset-bottom) + 160px)); }

.w-intro {
  position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; padding: 20px;
  background: radial-gradient(900px 520px at 50% 40%, rgba(255,255,255,0.55), transparent 70%), rgba(242,239,226,0.82);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: opacity .45s ease, visibility .45s;
}
.w-intro.is-gone { opacity: 0; visibility: hidden; }
.w-intro-card {
  width: min(560px, 100%); background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px;
  padding: 34px 34px 30px; box-shadow: 0 40px 70px -40px rgba(10,14,8,0.5);
}
.w-intro-card .wordmark { margin-bottom: 18px; }
.w-intro-card h1 { font-size: clamp(1.6rem, 4vw, 2.1rem); line-height: 1.15; text-wrap: balance; }
.w-intro-card p { color: var(--ink-soft); font-size: 15.5px; margin: 14px 0 0; }
.w-intro-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.w-intro-actions .btn { border-radius: 7px; }
.w-intro-actions .btn[disabled] { opacity: .65; cursor: progress; }
.w-progress { margin-top: 20px; height: 4px; border-radius: 2px; background: var(--line-soft); overflow: hidden; }
.w-progress span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .25s ease; }
.w-fallback { margin-top: 16px; font-size: 14px; }

@media (max-width: 640px) {
  .w-list span:last-child { display: none; }
  .w-list { left: auto; right: 160px; }
  .w-back span:last-child { display: none; }
  .w-back { padding: 9px; }
  .w-place { top: auto; bottom: max(14px, env(safe-area-inset-bottom)); left: 50%; font-size: 11px; }
  .touch .w-place { bottom: auto; top: max(62px, calc(env(safe-area-inset-top) + 48px)); }
  .w-map { width: 104px; height: 104px; }
  .w-list { right: 126px; }
}