* {
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(145deg, #0a1f1e 0%, #0c2a2a 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Courier New', 'Fira Code', monospace;
}

.game-container {
    background: #1e3a3a;
    padding: 20px 25px 25px 25px;
    border-radius: 64px 64px 48px 48px;
    box-shadow: 0 20px 35px rgba(0,0,0,0.5), inset 0 1px 4px rgba(255,255,255,0.1);
}

canvas {
    display: block;
    margin: 0 auto;
    border-radius: 28px;
    box-shadow: 0 0 0 6px #3b5e5e, 0 12px 28px black;
    cursor: crosshair;
    background: radial-gradient(circle at 20% 30%, #2b5e5a, #173e3b);
}

.info-panel {
    margin-top: 18px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 20px;
    flex-wrap: wrap;
    background: #0f2c2aee;
    backdrop-filter: blur(4px);
    padding: 12px 20px;
    border-radius: 60px;
    border: 1px solid #5ea5a0;
}

.score-box, .health-box, .ammo-box {
    background: #010d0c;
    padding: 6px 18px;
    border-radius: 2rem;
    color: #b7ffd6;
    font-weight: bold;
    font-size: 1.7rem;
    letter-spacing: 2px;
    text-shadow: 0 0 5px #0affb3;
    box-shadow: inset 0 1px 3px #2effc2, 0 3px 6px black;
}

.score-box span, .health-box span, .ammo-box span {
    font-size: 1rem;
    color: #b2ffe6;
    margin-right: 8px;
}

button {
    background: #ffd966;
    border: none;
    font-family: inherit;
    font-weight: bold;
    font-size: 1.2rem;
    padding: 6px 20px;
    border-radius: 40px;
    cursor: pointer;
    transition: 0.1s linear;
    box-shadow: 0 4px 0 #a05e15;
    color: #2c2c2c;
}

button:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 #a05e15;
}

.controls {
    font-size: 0.8rem;
    background: #00000066;
    padding: 5px 15px;
    border-radius: 30px;
    color: #cafff0;
}

@media (max-width: 700px) {
    .game-container { padding: 12px 15px 18px 15px; }
    .score-box, .health-box, .ammo-box { font-size: 1.2rem; padding: 3px 12px; }
    button { font-size: 1rem; padding: 4px 14px; }
}