/* === OXYGEN BAR + RESCUE OVERLAY === */

.oxygen-bar {
  position: fixed;
  top: 70px;
  left: 16px;
  z-index: 95;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 12px 7px 10px;
  font-family: 'Consolas', 'JetBrains Mono', 'Menlo', 'Monaco', 'Courier New', monospace;
  background: rgba(10, 6, 4, 0.78);
  border: 1px solid rgba(100, 200, 255, 0.32);
  border-radius: 8px;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 4px 14px rgba(0, 0, 0, 0.5),
    inset 0 0 12px rgba(80, 180, 255, 0.05);
  pointer-events: none;
  user-select: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.oxygen-bar .ox-icon {
  color: #9bf0ff;
  display: flex;
  align-items: center;
  filter: drop-shadow(0 0 4px rgba(100, 200, 255, 0.5));
}

.oxygen-bar .ox-track {
  position: relative;
  width: 110px;
  height: 8px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(100, 200, 255, 0.25);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.6);
}

.oxygen-bar .ox-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, rgba(100, 220, 255, 0.7), rgba(180, 250, 255, 0.95));
  box-shadow: 0 0 10px rgba(100, 200, 255, 0.6);
  transition: width 0.18s ease, background 0.4s ease;
}

.oxygen-bar .ox-segments {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg,
    transparent 0px,
    transparent 21px,
    rgba(0, 0, 0, 0.4) 21px,
    rgba(0, 0, 0, 0.4) 22px);
}

.oxygen-bar .ox-value {
  font-size: 11px;
  font-weight: 700;
  color: #b8f0ff;
  text-shadow: 0 0 6px rgba(100, 200, 255, 0.5), 0 1px 2px rgba(0, 0, 0, 0.8);
  font-variant-numeric: tabular-nums;
  min-width: 24px;
  text-align: right;
}

/* Low oxygen tint */
.oxygen-bar.low {
  border-color: rgba(255, 160, 60, 0.6);
}
.oxygen-bar.low .ox-fill {
  background: linear-gradient(90deg, rgba(255, 140, 60, 0.7), rgba(255, 200, 100, 0.95));
  box-shadow: 0 0 12px rgba(255, 140, 60, 0.6);
}
.oxygen-bar.low .ox-value {
  color: #ffcf8a;
}
.oxygen-bar.low .ox-icon { color: #ffaa44; }

/* Critical oxygen pulse */
.oxygen-bar.critical {
  border-color: rgba(255, 60, 60, 0.8);
  animation: oxCriticalPulse 0.9s ease-in-out infinite;
}
.oxygen-bar.critical .ox-fill {
  background: linear-gradient(90deg, rgba(255, 60, 60, 0.7), rgba(255, 120, 80, 0.95));
  box-shadow: 0 0 14px rgba(255, 60, 60, 0.6);
}
.oxygen-bar.critical .ox-value { color: #ff8a8a; }
.oxygen-bar.critical .ox-icon { color: #ff6060; }
@keyframes oxCriticalPulse {
  0%, 100% { box-shadow: 0 0 0 1px rgba(0,0,0,0.4), 0 0 14px rgba(255,60,60,0.4),  inset 0 0 12px rgba(255,60,60,0.06); }
  50%      { box-shadow: 0 0 0 1px rgba(0,0,0,0.4), 0 0 24px rgba(255,60,60,0.85), inset 0 0 18px rgba(255,60,60,0.18); }
}

/* ============================================================ */
/*  OXYGEN VIGNETTE (low-oxygen tunnel-vision effect)            */
/* ============================================================ */
.oxygen-vignette {
  position: fixed;
  inset: 0;
  z-index: 88;
  pointer-events: none;
  background: radial-gradient(ellipse at center,
    transparent 25%,
    rgba(40, 0, 0, 0.4) 60%,
    rgba(20, 0, 0, 0.95) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

/* ============================================================ */
/*  RESCUE SEQUENCE                                              */
/* ============================================================ */
body.oxygen-rescue::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 700;
  pointer-events: none;
  background: rgba(0, 0, 0, 0.85);
  animation: rescueFade 2.4s ease-out forwards;
}
@keyframes rescueFade {
  0%   { opacity: 0; }
  20%  { opacity: 1; }
  70%  { opacity: 1; }
  100% { opacity: 0; }
}