body {

  margin: 0;

  overflow: hidden;

  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

  text-align: center;

  color: #f4f4f4;

}

canvas {

  display: block;

}

#info {

  position: absolute;

  top: 10px;

  width: 100%;

  text-align: center;

  z-index: 100;

  display: block;

  color: white;

  text-shadow: 2px 2px 4px #000000;

}

#crosshair {

  position: absolute;

  top: 50%;

  left: 50%;

  width: 10px;

  height: 10px;

  border: 2px solid white;

  transform: translate(-50%, -50%);

  pointer-events: none;

  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);

  border-radius: 50%;

  z-index: 99;

}

#hotbar {

  position: fixed;

  bottom: 20px;

  left: 50%;

  transform: translateX(-50%);

  display: flex;

  background-color: rgba(0, 0, 0, 0.5);

  border-radius: 10px;

  padding: 5px;

  z-index: 100;

}

.slot {

  width: 40px;

  height: 40px;

  margin: 0 5px;

  border: 2px solid transparent;

  background-size: cover;

  background-position: center;

  border-radius: 5px;

  cursor: pointer;

  transition: border-color 0.2s;

  box-sizing: border-box;

}

.slot.active {

  border-color: #1e90ff;

  transform: scale(1.1);

}

#save-world-btn, #load-world-btn, #inventory-btn-menu {

    padding: 10px 20px;

    font-size: 1.2em;

    background-color: #1e90ff;

    border: none;

    color: white;

    cursor: pointer;

    border-radius: 5px;

    margin: 10px;

    transition: background-color 0.2s;

}

#inventory-btn-menu {

  background-color: #32cd32;

}

#save-world-btn:hover, #load-world-btn:hover {

    background-color: #1c86e0;

}

#inventory-btn-menu:hover {

    background-color: #2e8b57;

}

.slot[data-block-id="dirt"] { background-color: #8B4513; }

.slot[data-block-id="stone"] { background-color: #777; }

.slot[data-block-id="wood"] { background-color: #5C4033; }

.slot[data-block-id="grass"] { background-color: #38761D; }

.slot[data-block-id="sand"] { background-color: #F4A460; }

.slot[data-block-id="glass"] { background-color: rgba(135, 206, 235, 0.5); }

.slot[data-block-id="brick"] { background-color: #8B0000; }

.slot[data-block-id="cobblestone"] { background-color: #A9A9A9; }

.slot[data-block-id="obsidian"] { background-color: #1a1a1a; }

.slot[data-block-id="water"] { background-color: #4682B4; }

#inventory-grid {

    display: grid;

    grid-template-columns: repeat(10, 45px);

    gap: 5px;

    padding: 10px;

    margin: 10px auto;

    background-color: rgba(0, 0, 0, 0.5);

    border-radius: 10px;

    justify-content: center;

}

#inventory-ui {

    position: absolute;

    top: 50%;

    left: 50%;

    transform: translate(-50%, -50%);

    background-color: rgba(0, 0, 0, 0.7);

    border-radius: 10px;

    padding: 20px;

    z-index: 102;

    text-align: center;

    max-width: 90%;

}

.slot.dragging {

    opacity: 0.5;

    border: 2px dashed #fff;

}

#ghost-slot {

    position: absolute;

    width: 40px;

    height: 40px;

    background-size: cover;

    background-position: center;

    border-radius: 5px;

    z-index: 200;

    pointer-events: none;

    opacity: 0.75;

    transform: translate(-50%, -50%);

}

#game-container {

    position: relative;

    width: 100%;

    height: 100vh;

}

#touch-controls {

    position: absolute;

    bottom: 120px;

    width: 100%;

    display: none;

    justify-content: space-between;

    align-items: flex-end;

    pointer-events: none;

    z-index: 100;

}

#joystick-container {

    position: relative;

    width: 100px;

    height: 100px;

    background-color: rgba(0, 0, 0, 0.3);

    border-radius: 50%;

    margin-left: 20px;

    pointer-events: auto;

}

#joystick {

    position: absolute;

    top: 50%;

    left: 50%;

    transform: translate(-50%, -50%);

    width: 50px;

    height: 50px;

    background-color: rgba(255, 255, 255, 0.6);

    border-radius: 50%;

}

.touch-btn {

    width: 60px;

    height: 60px;

    background-color: rgba(0, 0, 0, 0.5);

    border: 2px solid white;

    border-radius: 50%;

    display: flex;

    justify-content: center;

    align-items: center;

    font-size: 2em;

    color: white;

    pointer-events: auto;

}

.right-controls {

    display: flex;

    align-items: center;

    margin-right: 20px;

}

#in-game-ui {

    position: absolute;

    top: 10px;

    right: 10px;

    display: none; 

    z-index: 101;

}

#in-game-ui button {

  padding: 10px 20px;

  font-size: 1.2em;

  background-color: rgba(0, 0, 0, 0.5);

  border: 2px solid white;

  color: white;

  cursor: pointer;

  border-radius: 5px;

  margin-left: 10px;

}

#in-game-ui #inventory-btn-game {

  background-color: #32cd32;

}

@media (max-width: 768px) {

  #inventory-ui {

    top: 10%;

    transform: translate(-50%, 0);

  }

}

@media (max-height: 800px) {

    #inventory-grid {

        max-height: 250px;

        overflow-y: auto;

    }

}