/* ── HUD — Chungking Express aesthetic ── */

/* ── DISTRICT NAME — vertical Chinese film-title style ── */
#hud-district {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-serif);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  text-shadow: 0 0 16px rgba(0, 232, 184, 0.5);
  pointer-events: none;
  white-space: nowrap;

  /* Decorative rule lines flanking text */
  display: flex;
  align-items: center;
  gap: 8px;
}

#hud-district::before,
#hud-district::after {
  content: '';
  width: 18px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--teal));
  opacity: 0.5;
  flex-shrink: 0;
}
#hud-district::after {
  background: linear-gradient(90deg, var(--teal), transparent);
}

/* ── HUD ICON BUTTONS ── */

#btn-journal:active,
#btn-map:active {
  border-color: var(--teal);
  color: var(--bg-deep);
  background: var(--teal);
  box-shadow: 0 0 16px rgba(0, 232, 184, 0.4);
}

/* Journal flash */
@keyframes journal-flash {
  0%, 100% { border-color: var(--border); box-shadow: none; }
  40%       { border-color: var(--teal); box-shadow: 0 0 14px rgba(0,232,184,0.5); color: var(--teal); }
}
#btn-journal.flash { animation: journal-flash 0.5s ease 3; }

/* ── MUSIC TOGGLE ── */
#btn-music {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: all;
  background: rgba(8,6,15,0.55);
  border: 1px solid var(--border);
  font-size: 0.95rem;
  z-index: 21;
  transition: border-color 0.2s, opacity 0.2s;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
#btn-music.muted {
  opacity: 0.4;
  border-color: rgba(255,255,255,0.07);
}
#btn-music:active { border-color: var(--teal); }

/* ── CULTURAL POINTS ── */
#hud-points {
  position: absolute;
  top: 14px;
  left: 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.08em;
  text-shadow: 0 0 10px rgba(224, 148, 10, 0.5);
  pointer-events: none;
}

/* ── INTERACTION PROMPT — film subtitle style ── */
#interact-prompt {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-zh);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-bright);
  background: rgba(5, 4, 8, 0.78);
  border-top: 1px solid rgba(0, 232, 184, 0.2);
  border-bottom: 1px solid rgba(0, 232, 184, 0.2);
  padding: 5px 18px;
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: 0.04em;
}

/* Subtitle fade pulse */
@keyframes subtitle-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.55; }
}
#interact-prompt { animation: subtitle-pulse 2.2s ease-in-out infinite; }

/* ── MINIMAP ── */
#minimap {
  position: absolute;
  bottom: 14px;
  right: 10px;
  width: 92px;
  height: 92px;
  pointer-events: none;
  z-index: 21;
  opacity: 0.9;
}