:root {
  --bg-color: #c5c5c5;
  --text-color: #2c3e50;
  --btn-bg: #e0e0e0;
  --btn-highlight: #ffffff;
  --btn-shadow-outer: #404040;
  --btn-shadow-inner: #808080;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Maple Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
}

.center-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.construction-btn {
  background-color: var(--btn-bg);
  color: var(--text-color);
  padding: 0.3rem 1.4rem;
  font-size: 1rem;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  user-select: none;
  text-align: center;
  
  border-top: 2px solid var(--btn-highlight);
  border-left: 2px solid var(--btn-highlight);
  border-right: 2px solid var(--btn-shadow-outer);
  border-bottom: 2px solid var(--btn-shadow-outer);
  outline: 1px solid var(--btn-shadow-inner);
  
  box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.15);
  transition: all 0.05s ease;
}

.construction-btn:active {
  border-top: 2px solid var(--btn-shadow-outer);
  border-left: 2px solid var(--btn-shadow-outer);
  border-right: 2px solid var(--btn-highlight);
  border-bottom: 2px solid var(--btn-highlight);
  padding: 0.3rem 1.4rem 0.3rem 1.4rem;
  box-shadow: none;
}