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

body {
    background: #000022;
    color: #00ffff;
    font-family: 'Courier New', Courier, monospace;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.game-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 16px 24px;
    position: relative;
}

.back-link {
    position: absolute;
    left: 24px;
    color: #00aaff;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.2s, text-shadow 0.2s;
}

.back-link:hover {
    color: #00ffff;
    text-shadow: 0 0 8px #00ffff;
}

.game-title {
    font-size: 2rem;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00aaff;
    letter-spacing: 3px;
    text-transform: uppercase;
}

main {
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 8px 20px 20px;
}

#gameWrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 540px;
}

#scoreBoard {
    font-size: 1.2rem;
    color: #00ffff;
    text-align: center;
    margin-bottom: 12px;
    text-shadow: 0 0 6px #00aaff;
    letter-spacing: 1px;
}

#gameContainer {
    position: relative;
    max-width: 500px;
    width: 100%;
    margin: 0 auto;
    border: 2px solid #00aaff;
    border-radius: 4px;
    box-shadow: 0 0 15px #00aaff, 0 0 30px rgba(0, 170, 255, 0.3), inset 0 0 15px rgba(0, 170, 255, 0.1);
    overflow: hidden;
    background: #000011;
}

#gameCanvas {
    display: block;
    width: 100%;
    height: auto;
}

#message {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 10;
}

#message span {
    color: #00ffff;
    font-size: 1.4rem;
    font-family: 'Courier New', Courier, monospace;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00aaff;
    text-align: center;
    padding: 16px 24px;
    background: rgba(0, 0, 34, 0.85);
    border: 1px solid #00aaff;
    border-radius: 8px;
    line-height: 1.6;
}

footer {
    text-align: center;
    padding: 16px;
    color: #005577;
    font-size: 0.8rem;
    letter-spacing: 1px;
}