body {
    margin: 0;
    background: #050505;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
}

.container {
    max-width: 480px;
    width: 100%;
    text-align: center;
    padding: 20px 0;
    color: white;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.title {
    margin: 15px 0;
    font-size: 28px;
    letter-spacing: 1px;
}

.home-btn {
    padding: 10px 20px;
    font-size: 14px;
    color: #fff;
    background: #181818;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.home-btn:hover {
    background: #222;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.6);
}

.lang-switch {
    display: flex;
    gap: 6px;
}

.lang-btn {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 999px;
    border: none;
    background: #181818;
    color: #fff;
    cursor: pointer;
    opacity: 0.6;
    transition: background 0.15s, opacity 0.15s, transform 0.15s;
}

.lang-btn.active {
    background: #3cff00;
    color: #000;
    opacity: 1;
    transform: translateY(-1px);
}

#menu {
    background: #111;
    padding: 22px 18px;
    border-radius: 16px;
    box-shadow: 0 0 25px rgba(0,0,0,0.7);
}

#menu h2 {
    margin-top: 0;
    margin-bottom: 10px;
}

.section {
    margin: 15px 0;
    text-align: left;
}

.section h3 {
    margin: 0 0 6px 6px;
    font-size: 14px;
    opacity: 0.9;
}

select {
    padding: 10px 14px;
    width: 100%;
    border-radius: 999px;
    border: 1px solid #333;
    background: #181818;
    color: #fff;
    outline: none;
    font-size: 14px;
}

.start-btn {
    padding: 12px 24px;
    margin-top: 18px;
    background: #3cff00;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0,255,120,0.3);
    transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
}

.start-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(0,255,120,0.4);
    filter: brightness(1.05);
}

.game-box {
    margin: 0 auto;
    margin-top: 10px;
    background: radial-gradient(circle at top, #202020, #050505);
    padding: 16px;
    border-radius: 18px;
    box-shadow: 0 0 25px rgba(0,0,0,0.8);
}

canvas {
    background: #000;
    display: block;
    margin: auto;
    touch-action: none;
    border-radius: 12px;
    box-shadow: 0 0 18px rgba(0,0,0,0.8);
}

#scoreBar {
    margin-top: 10px;
    font-size: 18px;
    color: #3cff00;
}

#bestScoreDisplay {
    margin-top: 10px;
    font-size: 14px;
    opacity: 0.85;
}

#gameOverScreen {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.78);
    backdrop-filter: blur(6px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 50;
}

.go-box {
    background: #111;
    padding: 24px 20px;
    border-radius: 16px;
    width: 80%;
    max-width: 320px;
    box-shadow: 0 0 30px rgba(0,0,0,0.9);
}

.go-box h2 {
    font-size: 24px;
    margin-bottom: 10px;
}

.go-box p {
    margin: 4px 0;
    font-size: 16px;
}

.go-box button {
    margin-top: 16px;
    padding: 12px 20px;
    background: #3cff00;
    border: none;
    border-radius: 999px;
    font-size: 16px;
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0,255,120,0.3);
    transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
}

.go-box button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(0,255,120,0.4);
    filter: brightness(1.05);
}