* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #222;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#game-container {
    position: relative;
    width: 100%;
    height: 100%;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#score-board {
    position: absolute;
    top: 20px;
    left: 20px;
    color: white;
    font-size: 24px;
    font-weight: bold;
    text-shadow: 2px 2px 0 #000;
}

#health-bar {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 200px;
    height: 20px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid white;
    border-radius: 10px;
    overflow: hidden;
}

#health-fill {
    width: 100%;
    height: 100%;
    background: #ff4444;
    transition: width 0.2s;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    pointer-events: auto;
    color: white;
    text-align: center;
}

.hidden {
    display: none !important;
}

h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #ffd700;
    text-shadow: 3px 3px 0 #000;
}

p {
    font-size: 24px;
    margin-bottom: 40px;
}

button {
    padding: 15px 40px;
    font-size: 24px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 4px 0 #2E7D32;
    transition: transform 0.1s;
}

button:active {
    transform: translateY(4px);
    box-shadow: none;
}

#controls-hint {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 40px;
    opacity: 0.3;
    pointer-events: none;
}

.stick-zone, .shoot-zone {
    width: 100px;
    height: 100px;
    border: 2px dashed white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}