:root {
  --bg-color: #111;
  --tile-elapsed-color: #333;
  --tile-active-color: lime;
  --text-color: white;
  --menu-bg-color: rgba(0, 0, 0, 0.8);
  --menu-border-color: #555;
  --button-bg-color: rgba(255, 255, 255, 0.1);
  --button-border-color: white;
  --font-family: 'Doto', sans-serif;
}

body {
  margin: 0;
  background-color: var(--bg-color);
  font-family: var(--font-family);
  overflow: hidden; /* Prevent scrollbars */
}

#tiles-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: grid;
  overflow: hidden;
}

.tile {
  background-color: var(--tile-elapsed-color);
  box-sizing: border-box;
}

.tile.lime {
  background-color: var(--tile-active-color);
}

.ui-container {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  color: var(--text-color);
  pointer-events: none;
}

#timer {
  font-size: 20vw;
  font-weight: 900;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
}

#toggle-menu-container {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  pointer-events: auto;
}

#toggle-button {
  font-size: 1.5rem;
  padding: 5px 10px;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--button-border-color);
  color: var(--text-color);
  border-radius: 5px;
}

#menu {
  display: none;
  position: absolute;
  right: 0;
  top: 45px;
  background-color: var(--menu-bg-color);
  padding: 15px;
  border-radius: 5px;
  border: 1px solid var(--menu-border-color);
  width: 220px;
}

#menu.show {
  display: block;
}

#menu .time-input {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

#menu input {
  font-size: 1rem;
  padding: 8px;
  width: 60px;
  text-align: center;
  border-radius: 5px;
  border: 1px solid var(--button-border-color);
  background-color: rgba(0, 0, 0, 0.2);
  color: var(--text-color);
}

#menu button {
  font-size: 1rem;
  padding: 8px 12px;
  cursor: pointer;
  background-color: var(--button-bg-color);
  border: 1px solid var(--button-border-color);
  color: var(--text-color);
  border-radius: 5px;
  width: 100%;
}

#menu .buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#menu button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#version-info {
  position: absolute;
  bottom: 5px;
  right: 5px;
  font-size: 12px;
  color: var(--text-color);
  z-index: 10;
}