body {
    background: linear-gradient(135deg, #191720 0%, #410707 90%);
    min-height: 100vh;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}
#pong {
    background: radial-gradient(circle at 50% 55%, #222 55%, #611d1d 100%);
    border: 4px solid #fff2;
    border-radius: 30px;
    box-shadow: 0 0 75px #ffb70066, 0 0 220px #1e2239;
    display: block;
    z-index: 1;
    cursor: default;
}
#overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(20,14,9, 0.92);
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
}
.screen {
    background: linear-gradient(120deg, #180b04 60%, #511a1a 100%);
    border-radius: 24px;
    box-shadow: 0 0 44px #ffb70033;
    padding: 50px 60px 40px 60px;
    text-align: center;
    font-family: 'Bebas Neue', 'Goldman', 'Arial Black', Arial, sans-serif;
    color: #ffb700;
    min-width: 340px;
    max-width: 92vw;
}
.screen h1, .screen h2 {
    font-family: 'Goldman', 'Bebas Neue', 'Arial Black', Arial, sans-serif;
    letter-spacing: 2px;
    color: #ffb700;
    margin-bottom: 0.4em;
    font-size: 2.3em;
}
.screen .subtitle {
    color: #fff;
    font-size: 1.1em;
    margin-bottom: 0.5em;
    font-family: 'Bebas Neue', 'Arial Black', Arial, sans-serif;
    letter-spacing: 0.09em;
}
.screen .desc {
    color: #fff6;
    font-size: 1.15em;
    margin-bottom: 1em;
}
.screen ul {
    text-align: left;
    font-family: 'Goldman', 'Arial Black', monospace;
    color: #ffb700;
    font-size: 1em;
    margin: 0 0 1.2em 0;
    padding-left: 2em;
}
.screen .note {
    font-size: 1em;
    color: #fff;
    margin-top: 1.5em;
}
.high-score-text {
    color: #fff;
    font-size: 1.15em;
    margin-bottom: 1.3em;
}
.nav-btns {
    margin-top: 1.2em;
    display: flex;
    justify-content: center;
    gap: 1.2em;
}
.nav-btns button {
    font-size: 1em;
    font-family: 'Bebas Neue', 'Goldman', Arial, sans-serif;
    border-radius: 7px;
    background: #191720e0;
    color: #ffb700;
    border: 2px solid #ffb700;
    padding: 0.35em 1.5em;
    cursor: pointer;
    margin: 0 0.2em;
    transition: background 0.14s, color 0.14s, transform 0.13s;
}
.nav-btns button:hover {
    background: #ffb700;
    color: #191720;
    transform: scale(1.09);
}
#score-animate {
    position: fixed;
    left: 50%;
    top: 18%;
    transform: translateX(-50%);
    font-size: 92px;
    font-family: 'Goldman', 'Bebas Neue', 'Arial Black', Arial, sans-serif;
    color: #ffb700;
    text-shadow: 0 0 36px #fff, 0 0 120px #ffb70099;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s;
    z-index: 100;
}
.diff-btn, #start-btn, #restart-btn, #resume-btn, #reset-btn, .next-btn, .back-btn, .home-btn, .start-game-btn {
    font-family: 'Goldman', 'Bebas Neue', Arial, sans-serif;
    font-size: 1.15em;
    padding: 0.6em 2em;
    border-radius: 10px;
    border: none;
    background: #ffb700;
    color: #191720;
    box-shadow: 0 0 14px #e8411880;
    cursor: pointer;
    margin: 0.8em 0.5em 0.3em 0.5em;
    transition: background 0.18s, color 0.18s, transform 0.13s;
}
.diff-btn:hover, #start-btn:hover, #restart-btn:hover, #reset-btn:hover, .next-btn:hover, .back-btn:hover, .home-btn:hover, .start-game-btn:hover, #resume-btn:hover {
    background: #e84118;
    color: #fff;
    transform: scale(1.09);
}
#resume-btn { background: #ffb700; color: #191720; }
#resume-btn:hover { background: #e84118; color: #fff; }

#hud {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    gap: 18px;
}
#pause-btn, #reset-btn-hud {
    font-size: 2em;
    background: #191720e0;
    color: #ffb700;
    border: 2px solid #ffb700;
    border-radius: 12px;
    padding: 2px 18px;
    margin: 0;
    cursor: pointer;
    transition: background 0.13s, color 0.13s;
    font-family: 'Bebas Neue', 'Goldman', Arial, sans-serif;
}
#pause-btn:hover, #reset-btn-hud:hover {
    background: #ffb700;
    color: #191720;
}

/* --- Mobile Controls --- */
.mobile-controls {
    display: none;
    width: 100vw;
    justify-content: center;
    gap: 6vw;
    position: absolute;
    bottom: 10vw;
    left: 0;
    z-index: 12;
}
.mobile-controls button {
    font-size: 9vw;
    padding: 2vw 7vw;
    border-radius: 18px;
    background: #ffb700;
    color: #191720;
    border: none;
    box-shadow: 0 0 22px #e8411880;
    cursor: pointer;
    transition: background 0.12s, color 0.12s, transform 0.12s;
    font-family: 'Goldman', 'Bebas Neue', Arial, sans-serif;
}
.mobile-controls button:active {
    background: #e84118;
    color: #fff;
    transform: scale(1.1);
}

@media (max-width: 700px) {
    .mobile-controls {
        display: flex;
    }
}

@media (max-width: 600px) {
    .screen {
        padding: 10vw 2vw 6vw 2vw;
        min-width: unset;
        font-size: 2vw;
    }
    #pong {
        width: 98vw !important;
        height: 64vw !important;
    }
    #hud {
        top: 3vw;
        gap: 7vw;
    }
}