/* base */
body {
  margin: 0;
  height: 100vh;
  background: black;
  color: #eee;
  font-family: "Courier New", monospace;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  overflow: hidden;
}

/* logo */
.logo {
  display: block;
  margin-bottom: 40px;
  max-width: 200px;
  width: 40%;
  filter: drop-shadow(0 0 6px rgba(255, 0, 0, 0.7));
}

/* panel */
.panel {
  display: flex;
  align-items: center;
  gap: 10px;
}

input {
  padding: 10px;
  font-size: 16px;
  background: black;
  border: 1px solid #eee;
  color: #eee;
  outline: none;
  width: 250px;
}

input::placeholder {
  color: #888;
}

button {
  padding: 10px 16px;
  background: #eee;
  color: black;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

/* error message */
.error {
  color: red;
  margin-top: 12px;
  font-size: 14px;
  min-height: 18px;
}

/* welcome screen */
.welcome {
  position: fixed;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.95);
  color: #0f0;
  font-family: "Courier New", monospace;
  font-size: 18px;
  letter-spacing: 1px;
  text-align: center;
  text-transform: lowercase;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

.welcome.show {
  opacity: 1;
  pointer-events: auto;
}

.welcome .text {
  text-shadow: 0 0 6px rgba(0, 255, 0, 0.7);
}

/* shake animation */
@keyframes shake {
  0% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
  100% { transform: translateX(0); }
}

.stage.shake {
  animation: shake 0.3s;
}