.feature-vault-scene {
  width: 100%;
  max-width: 1400px;
  height: 480px;
  perspective: 2000px; /* Increased perspective */
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 60px auto 20px;
  position: relative;
  overflow: visible; /* Prevent clipping during 3D transforms */
  padding: 40px 0;
}

.vault-track {
  width: 360px; /* Fixed width for stability */
  height: 400px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.vault-card {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%); /* Base centering */
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  backface-visibility: hidden;
  box-shadow: var(--shadow-lg);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  cursor: grab;
  /* Glassmorphism Restored */
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg-secondary) 94%, transparent);
}

.vault-card:active {
  cursor: grabbing;
}

/* Card States */
.vault-card.active {
  z-index: 20;
  opacity: 1;
  filter: blur(0);
}

.vault-card:not(.active) {
  opacity: 0.4;
  filter: blur(4px);
  pointer-events: none;
}

/* Icon & Parallax */
.vault-icon-box {
  width: 84px;
  height: 84px;
  margin-bottom: 28px;
  background: var(--bg-tertiary);
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  box-shadow: var(--shadow-md);
  transform: translateZ(30px);
  transition: transform 0.4s ease;
  border: 1px solid #3b82f6; /* Ensure icon box is visible */
}

.vault-card:hover .vault-icon-box {
  transform: translateZ(50px) translateY(-5px);
}

.vault-icon-box svg {
  width: 40px;
  height: 40px;
}

.vault-card h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.vault-card .pillar-tag {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 6px 14px;
  background: color-mix(in srgb, var(--site-primary) 10%, transparent);
  color: var(--site-primary);
  border-radius: 99px;
  margin-bottom: 20px;
}

.vault-card .feature-list-mini {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.vault-card .feature-list-mini li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.vault-card .feature-list-mini li::before {
  content: "•";
  color: var(--site-primary);
  font-weight: bold;
}

/* Controls */
.vault-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  margin-top: 20px;
}

.vault-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 
    0 10px 30px -10px rgba(0, 0, 0, 0.5),
    inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  z-index: 100;
}

.vault-btn svg {
  width: 32px;
  height: 32px;
  stroke-width: 3;
  transition: transform 0.3s ease;
}

.vault-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #60a5fa; /* Focus blue */
  transform: scale(1.15) translateY(-2px);
  border-color: rgba(96, 165, 250, 0.4);
  box-shadow: 
    0 20px 40px -10px rgba(0, 0, 0, 0.6),
    0 0 20px rgba(96, 165, 250, 0.2);
}

.vault-btn:active {
  transform: scale(0.95);
}

/* Specific direction offsets on hover */
#vaultPrev:hover svg, #gamesVaultPrev:hover svg { transform: translateX(-3px); }
#vaultNext:hover svg, #gamesVaultNext:hover svg { transform: translateX(3px); }

.vault-indicators {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.vault-pip {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: var(--border-color);
  cursor: pointer;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.vault-pip.active {
  width: 36px;
  border-radius: 6px;
  background: var(--accent-color);
}

@media (max-width: 768px) {
  .feature-vault-scene {
    height: 440px;
  }
  .vault-track {
    width: 300px;
    height: 380px;
  }
  .vault-btn {
    width: 52px;
    height: 52px;
  }
  .vault-btn svg {
    width: 28px;
    height: 28px;
    stroke-width: 2.5;
  }
}