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

body {
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, #000 0%, #001100 50%, #000 100%);
    color: #0f0;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.hero {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 0;
}

.title {
    font-size: 3.5rem;
    color: #0ff;
    text-shadow: 0 0 20px #0ff;
    margin-bottom: 10px;
    letter-spacing: 3px;
}

.subtitle {
    font-size: 1.2rem;
    color: #0a0;
    margin-bottom: 20px;
}

.game-preview {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
}

.preview-box {
    width: 200px;
    height: 150px;
    background: #001100;
    border: 2px solid #0f0;
    position: relative;
    border-radius: 8px;
}

.preview-box div {
    position: absolute;
    border-radius: 2px;
}

.player {
    width: 12px;
    height: 12px;
    background: #0ff;
    top: 70px;
    left: 50px;
}

.human {
    width: 10px;
    height: 10px;
    background: #0f0;
    top: 30px;
    right: 40px;
}

.robot {
    width: 12px;
    height: 12px;
    background: #f00;
    bottom: 30px;
    right: 30px;
}

.bullet {
    width: 6px;
    height: 6px;
    background: #ff0;
    top: 60px;
    left: 80px;
}

.instructions {
    background: rgba(0, 255, 0, 0.05);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #0a0;
    margin-bottom: 30px;
}

.instructions h2 {
    text-align: center;
    color: #0ff;
    margin-bottom: 30px;
    font-size: 2rem;
}

.high-score-preview {
    text-align: center;
    margin: 30px 0;
    padding: 20px;
    background: rgba(0, 255, 0, 0.05);
    border: 1px solid #0a0;
    border-radius: 10px;
    display: none;
}

.high-score-display {
    font-size: 1.5rem;
}

.high-score-label {
    color: #0a0;
    margin-right: 10px;
}

.high-score-value {
    color: #ffd700;
    font-weight: bold;
    text-shadow: 0 0 10px #ffd700;
    animation: scoreGlow 2s ease-in-out infinite alternate;
}

@keyframes scoreGlow {
    from { text-shadow: 0 0 10px #ffd700; }
    to { text-shadow: 0 0 15px #ffd700, 0 0 20px #ffa500; }
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.control-group {
    text-align: center;
}

.control-group h3 {
    color: #0ff;
    margin-bottom: 15px;
}

.keys {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
}

.key {
    display: inline-block;
    background: #0a0;
    color: #000;
    padding: 8px 12px;
    border-radius: 5px;
    font-weight: bold;
    min-width: 35px;
    text-align: center;
}

.objectives {
    text-align: center;
}

.objectives h3 {
    color: #0ff;
    margin-bottom: 15px;
}

.objectives ul {
    list-style: none;
    display: inline-block;
    text-align: left;
}

.objectives li {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon {
    font-size: 1.2rem;
}

.icon.green { color: #0f0; }
.icon.red { color: #f00; }
.icon.purple { color: #f0f; }

.game-info {
    margin-bottom: 40px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.info-card {
    background: rgba(0, 255, 255, 0.05);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #0aa;
    text-align: center;
}

.info-card h4 {
    color: #0ff;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.cta-section {
    text-align: center;
    margin: 50px 0;
}

.play-button {
    background: linear-gradient(45deg, #0f0, #0a0);
    color: #000;
    border: none;
    padding: 20px 40px;
    font-size: 1.5rem;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.3);
}

.play-button:hover {
    background: linear-gradient(45deg, #0ff, #0aa);
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.5);
}

.tip {
    margin-top: 15px;
    color: #0a0;
    font-size: 0.9rem;
}

footer {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid #0a0;
    margin-top: 40px;
    color: #0a0;
}

footer a {
    color: #0ff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.social-links {
    margin-top: 10px;
    font-size: 0.9rem;
}

.social-links a {
    color: #0ff;
    margin: 0 5px;
}

@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .controls-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .container {
        padding: 15px;
    }
    
    .social-links {
        font-size: 0.8rem;
    }
}