body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #0a0a1a;
    min-height: 100vh;
    font-family: 'Orbitron', Arial, sans-serif;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#gameCanvas {
    display: block;
    margin: 0 auto;
    background: transparent;
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
}

#scoreboard {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 1.5em;
    text-shadow: 0 0 8px #00f0ff, 0 0 2px #fff;
    z-index: 2;
    display: flex;
    gap: 2em;
}

#asset-links {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    color: #aaa;
    font-size: 0.9em;
    z-index: 2;
    background: rgba(10,10,30,0.7);
    padding: 0.5em 1em;
    border-radius: 8px;
}

#game-over-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 10, 30, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}
#game-over-modal .modal-content {
    background: #000;
    color: #fff;
    padding: 2em 3em;
    border-radius: 16px;
    text-align: center;
    font-size: 1.3em;
    border: 2px solid #fff;
    min-width: 260px;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
#retry-btn {
    margin-top: 1.5em;
    padding: 0.7em 2em;
    font-size: 1em;
    background: #fff;
    color: #000;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Orbitron', Arial, sans-serif;
    transition: background 0.2s, color 0.2s;
}
#retry-btn:hover {
    background: #00f0ff;
    color: #fff;
}
#leaderboard {
    color: #fff;
    background: #111;
    border: 1px solid #fff;
    border-radius: 8px;
    padding: 0.7em 1em;
    margin: 0.5em 0 1em 0;
    font-size: 1em;
    text-align: left;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
}
#leaderboard h3 {
    margin: 0 0 0.5em 0;
    font-size: 1.1em;
    text-align: center;
    color: #00f0ff;
}
#leaderboard ol {
    margin: 0;
    padding-left: 1.2em;
}
#leaderboard li {
    margin-bottom: 0.2em;
    color: #fff;
}
#credit {
    position: absolute;
    top: 10px;
    left: 10px;
    color: #fff;
    font-size: 1em;
    z-index: 2;
    text-shadow: 0 0 8px #00f0ff, 0 0 2px #fff;
    font-family: 'Orbitron', Arial, sans-serif;
}

@media (max-width: 800px) {
    #scoreboard {
        font-size: 1em;
    }
    #asset-links {
        font-size: 0.7em;
    }
}