* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #222;
    color: #fff;
    overflow: hidden;
    height: 100vh;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.controls {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background-color: #333;
}

.tools button, .navigation button {
    background-color: #555;
    color: white;
    border: none;
    padding: 8px 12px;
    margin: 0 5px;
    cursor: pointer;
    border-radius: 4px;
}

.tools button.active {
    background-color: #ff9800;
}

#spawn-player-btn {
    background-color: #4CAF50;
    color: white;
    font-weight: bold;
    padding: 10px 15px;
    margin-left: 10px;
}

#spawn-player-btn:hover {
    background-color: #45a049;
}

.navigation {
    display: flex;
}

.info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.info span {
    margin: 2px 0;
    font-size: 14px;
}

.help-text {
    color: #aaa;
}

#simulation-canvas {
    flex-grow: 1;
    background-color: #000;
    cursor: crosshair;
}

#player-hud {
    position: fixed;
    bottom: 10px;
    left: 10px;
    width: 300px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px;
    border-radius: 5px;
    font-family: Arial, sans-serif;
    z-index: 1000;
}

#health-bar-container {
    width: 100%;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    margin-bottom: 10px;
    border-radius: 3px;
}

#health-bar {
    width: 100%;
    height: 100%;
    background-color: #4CAF50;
    border-radius: 3px;
    transition: width 0.3s;
}

#inventory-container {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

.inventory-slot {
    width: 30px;
    height: 30px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    position: relative;
    transition: transform 0.1s;
}

.inventory-slot:hover {
    transform: scale(1.1);
    background-color: rgba(255, 255, 255, 0.3);
}