.game-section {
    background: #0a0a0f;
    color: #e0f7fa;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    height: 72vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reaction-container {
    background: rgba(0, 246, 255, 0.07);
    border: 2px solid #00f6ff;
    border-radius: 16px;
    padding: 2rem 2.5rem;
    box-shadow: 0 4px 24px rgba(0,246,255,0.08);
    text-align: center;
    min-width: 350px;
    min-height: 400px;
    position: relative;
}

#reaction-box {
    width: 300px;
    height: 120px;
    background: #222;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: 12px;
    margin: 2rem auto 1rem auto;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}

#reaction-box.ready {
    background: #ff5252;
}

#reaction-box.go {
    background: #00ff7f;
    color: #222;
}

#result, #high-score {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

#restart-btn {
    padding: 0.7rem 2rem;
    border-radius: 8px;
    border: none;
    background: #00f6ff;
    color: #0a0a0f;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.2s;
}

#restart-btn.hidden {
    display: none;
}