body {
  background: #0a0a1a;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  color: #f0f0f0;
  font-family: monospace;
}

#game {
  display: block;
  max-width: 100%;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

#input-zone {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  width: 800px;
  max-width: 100%;
}

#mc-buttons {
  display: flex;
  gap: 4px;
}

.mc-btn {
  min-width: 80px;
  min-height: 40px;
  background: #1a1a3a;
  color: #f0f0f0;
  border: 2px solid #4040a0;
  cursor: pointer;
  font-size: 16px;
  font-family: monospace;
}

.mc-btn:hover {
  background: #2a2a5a;
}

.mc-btn:focus {
  outline: 2px solid #6060d0;
  outline-offset: 2px;
}

#free-text-zone {
  display: flex;
  gap: 8px;
  align-items: center;
}

#answer-input {
  background: #1a1a3a;
  color: #f0f0f0;
  border: 2px solid #4040a0;
  padding: 8px;
  font-size: 18px;
  font-family: monospace;
  width: 120px;
}

#answer-input:focus {
  outline: 2px solid #6060d0;
  outline-offset: 2px;
  border-color: #6060d0;
}

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type=number] {
  -moz-appearance: textfield;
}

#strike-btn {
  background: #4040c0;
  color: white;
  padding: 8px 16px;
  border: none;
  cursor: pointer;
  font-family: monospace;
  font-size: 16px;
}

#strike-btn:hover {
  background: #5050d0;
}

#strike-btn:focus {
  outline: 2px solid #8080e0;
  outline-offset: 2px;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.overlay-card {
  background: #1a1a3a;
  border: 2px solid #4040a0;
  padding: 32px;
  max-width: 400px;
  width: 90%;
  position: relative;
}

.overlay-card h2 {
  margin: 0 0 16px 0;
  color: #f0f0f0;
}

.overlay-card p {
  margin: 0 0 16px 0;
  color: #d0d0d0;
}

.diff-btn {
  display: block;
  width: 100%;
  margin: 8px 0;
  padding: 12px;
  font-size: 16px;
  background: #2a2a5a;
  color: #f0f0f0;
  border: 2px solid #6060d0;
  cursor: pointer;
  font-family: monospace;
}

.diff-btn:hover {
  background: #3a3a6a;
}

.diff-btn:focus {
  outline: 2px solid #8080e0;
  outline-offset: 2px;
}

#top-bar {
  position: fixed;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 8px;
  z-index: 50;
}

#top-bar button,
#top-bar span {
  background: #1a1a3a;
  color: #f0f0f0;
  border: 2px solid #4040a0;
  padding: 8px 12px;
  cursor: pointer;
  font-family: monospace;
  font-size: 14px;
}

#top-bar button:hover {
  background: #2a2a5a;
}

#top-bar button:focus {
  outline: 2px solid #6060d0;
  outline-offset: 2px;
}

#username-display {
  cursor: default;
  padding: 8px 16px;
}

#close-auth {
  position: absolute;
  top: 8px;
  right: 8px;
  background: transparent;
  border: none;
  color: #f0f0f0;
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
}

#close-auth:hover {
  color: #ff6060;
}

#close-auth:focus {
  outline: 2px solid #6060d0;
  outline-offset: 2px;
}

#auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  padding: 8px;
  background: #2a2a5a;
  color: #a0a0a0;
  border: 2px solid #4040a0;
  cursor: pointer;
  font-family: monospace;
}

.tab-btn.active {
  background: #4040a0;
  color: #f0f0f0;
  border-color: #6060d0;
}

.tab-btn:hover {
  background: #3a3a6a;
}

.tab-btn:focus {
  outline: 2px solid #6060d0;
  outline-offset: 2px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

form input {
  background: #2a2a5a;
  color: #f0f0f0;
  border: 2px solid #4040a0;
  padding: 8px;
  font-size: 14px;
  font-family: monospace;
}

form input:focus {
  outline: 2px solid #6060d0;
  outline-offset: 2px;
  border-color: #6060d0;
}

form button {
  background: #4040c0;
  color: white;
  padding: 10px;
  border: none;
  cursor: pointer;
  font-family: monospace;
  font-size: 14px;
}

form button:hover {
  background: #5050d0;
}

form button:focus {
  outline: 2px solid #8080e0;
  outline-offset: 2px;
}

.error-msg {
  color: #ff6060;
  font-size: 12px;
  margin: 0;
  min-height: 16px;
}