/* Vault door styling */
.vault-door-outer {
  position: relative;
  width: 300px;
  height: 300px;
  background: #ebebeb;
  border-radius: 6%;
  margin: 2rem auto 1rem;
  box-shadow: inset 0 0 0 4px #ccc;
}
.vault-door-inner {
  position: absolute;
  margin: 32px;
  width: 236px;
  height: 236px;
  background: #dbdbdb;
  border-radius: 25%;
  overflow: hidden;
}
.vault-door-lock-shadow {
  position: absolute;
  width: 200px;
  height: 100px;
  background: linear-gradient(rgba(160,160,160,0.2), transparent);
  top: 100px;
  left: 48px;
  transform: rotate(-45deg);
  transition: all .05s ease-out;
}
.vault-door-lock-wrapper {
  position: absolute;
  width: 120px;
  height: 120px;
  top: 58px;
  left: 58px;
}
.vault-door-lock {
  background: #b9b9b9;
}
.vault-door-circle {
  position: absolute;
  width: 190px;
  height: 190px;
  top: -35px;
  left: -35px;
  border-radius: 50%;
}
.vault-door-pistons {
  position: absolute;
  width: 200px;
  height: 200px;
  top: 18px;
  left: -10px;
}
.piston {
  position: absolute;
  background: #b9b9b9;
  width: 200px;
  height: 20px;
  border-radius: 8px;
  transition: all .05s ease-out;
}
.piston1 { top: 90px; left: 0; }
.piston2 { top: 90px; left: 0; transform: rotate(45deg); }
.piston3 { top: 90px; left: 0; transform: rotate(90deg); }
.piston4 { top: 90px; left: 0; transform: rotate(135deg); }
.vault-door-handle-shadow {
  position: absolute;
  background: #a0a0a0;
  width: 90px;
  height: 90px;
  top: 105px;
  left: 105px;
  border-radius: 50%;
}
.vault-door-handle-long-shadow {
  position: absolute;
  background: linear-gradient(#a0a0a0, transparent);
  width: 112px;
  height: 112px;
  top: 94px;
  left: 94px;
  transform: rotate(-45deg);
}
.vault-door-handle {
  position: absolute;
  border: solid 15px #d6d6d6;
  width: 80px;
  height: 80px;
  top: 110px;
  left: 110px;
  border-radius: 50%;
  transition: all .3s ease-in-out;
}
.handle-bar {
  position: absolute;
  background: #d6d6d6;
  height: 15px;
  width: 80px;
  top: 32px;
  left: 0;
}
.bar1 { transform: rotate(45deg); }
.bar2 { transform: rotate(135deg); }
.vault-door-outer:hover .vault-door-handle {
  transform: rotate(-180deg);
}

/* Register form styling */
body {
  background: #1a1a2e;
  font-family: Arial, sans-serif;
  color: #f0f0f0;
}
.register-container {
  background: #16213e;
  padding: 1.5rem;
  border-radius: 8px;
  width: 320px;
  margin: 0 auto 2rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  text-align: center;
}
.register-container h1 {
  margin-bottom: 1rem;
}
.input-group {
  margin-bottom: 1rem;
  text-align: left;
}
.input-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}
.input-group input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #3a3a5e;
  border-radius: 4px;
  background: #1f4068;
  color: #f0f0f0;
}
#purchase-btn {
  background: #e94560;
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}
#purchase-btn:hover {
  background: #d63350;
}
.change-output {
  margin-top: 1rem;
  font-weight: bold;
  min-height: 1.2em;
}