.game-deck {
    max-width: 960px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr minmax(220px, 280px);
    gap: 2rem;
    align-items: start;
}

.game-intro,
.game-play {
    min-width: 0;
}

.game-play[hidden],
.game-over-panel[hidden],
#game-play[hidden],
#game-over-panel[hidden] {
    display: none !important;
}

.game-ends {
    font-family: var(--font-secondary);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: -1rem 0 1.25rem;
}

.game-next-line {
    margin: 1rem 0 0;
    padding-top: 0.85rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-family: var(--font-secondary);
    font-size: 0.72rem;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.35);
}

.game-next-line #game-next-name {
    color: rgba(255, 255, 255, 0.42);
}

.game-next-cd {
    display: block;
    margin-top: 0.15rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.28);
}

.game-nick-label {
    display: block;
    font-family: var(--font-primary);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.game-nick-row {
    display: flex;
    align-items: center;
    max-width: 320px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.35);
    overflow: hidden;
    margin-bottom: 1rem;
}

.game-nick-prefix {
    padding: 0 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-secondary);
}

.game-nick-row input {
    flex: 1;
    border: 0;
    background: transparent;
    color: #fff;
    padding: 0.85rem 0.75rem 0.85rem 0;
    font-family: var(--font-secondary);
    font-size: 1rem;
    outline: none;
}

.game-start-btn,
.game-secondary-btn {
    border: 0;
    cursor: pointer;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.85rem 1.4rem;
    border-radius: 999px;
}

.game-start-btn {
    background: var(--accent-color);
    color: #fff;
}

.game-start-btn:hover:not(:disabled) {
    background: var(--accent-secondary);
}

.game-start-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.game-secondary-btn {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.game-hint {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-secondary);
}

.game-hud {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.game-hud strong {
    color: #fff;
    font-size: 1.15rem;
}

#game-canvas {
    width: min(100%, 360px);
    height: auto;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: #05070f;
    display: block;
    touch-action: none;
}

.game-play {
    position: relative;
}

.game-dpad {
    display: grid;
    grid-template-columns: repeat(3, 3.1rem);
    grid-template-rows: repeat(3, 3.1rem);
    gap: 0.35rem;
    justify-content: center;
    margin-top: 0.85rem;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.game-dpad[hidden] {
    display: none !important;
}

.game-dpad-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.game-dpad-btn:active,
.game-dpad-btn:focus-visible {
    background: rgba(0, 82, 255, 0.35);
    border-color: rgba(0, 82, 255, 0.7);
    color: #fff;
    outline: none;
    transform: scale(0.96);
}

.game-dpad-up {
    grid-column: 2;
    grid-row: 1;
}

.game-dpad-left {
    grid-column: 1;
    grid-row: 2;
}

.game-dpad-down {
    grid-column: 2;
    grid-row: 2;
}

.game-dpad-right {
    grid-column: 3;
    grid-row: 2;
}

.game-over-panel {
    position: absolute;
    inset: 2.5rem 0 auto 0;
    max-width: 360px;
    padding: 1.5rem;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    text-align: center;
    transform: scale(0.94);
    opacity: 0;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.game-over-panel.show,
.game-over-panel:not([hidden]) {
    opacity: 1;
    transform: scale(1);
}

.game-over-panel h2 {
    font-family: var(--font-primary);
    margin-bottom: 0.5rem;
}

.game-over-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin-top: 1rem;
}

.game-save-msg {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--accent-color);
    min-height: 1.2em;
}

.game-leaderboard {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.03);
}

.game-leaderboard h2 {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.game-leaderboard ol {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.game-leaderboard li {
    display: grid;
    grid-template-columns: 2.2rem 1fr auto;
    gap: 0.5rem;
    align-items: center;
    font-family: var(--font-secondary);
    font-size: 0.9rem;
}

.game-leaderboard .rank {
    color: var(--accent-color);
    font-weight: 700;
}

.game-leaderboard .nick {
    color: #fff;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.game-leaderboard .pts {
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.game-leaderboard .empty {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
}

@media (max-width: 800px) {
    html:has(body.game-page),
    body.game-page {
        height: 100%;
        height: 100dvh;
        overflow: hidden;
        overscroll-behavior: none;
        touch-action: manipulation;
    }

    body.game-page .deck-anim-root {
        height: 100dvh;
        max-height: 100dvh;
        overflow: hidden;
        overscroll-behavior: none;
    }

    body.game-page .deck-stage.game-deck {
        min-height: 0;
        height: 100dvh;
        max-height: 100dvh;
        padding: 4.25rem 1rem 1rem;
        overflow: hidden;
        overscroll-behavior: none;
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        align-items: stretch;
    }

    .game-deck {
        grid-template-columns: 1fr;
    }

    .game-intro {
        flex: 1 1 auto;
        min-height: 0;
        overflow: hidden;
    }

    .game-intro .slide-title {
        font-size: clamp(1.6rem, 7vw, 2.1rem);
        margin-bottom: 0.4rem;
    }

    .game-intro .slide-lead {
        font-size: 0.88rem;
        margin-bottom: 0.75rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .game-ends {
        margin: 0 0 0.75rem;
        font-size: 0.78rem;
    }

    .game-hint {
        font-size: 0.75rem;
    }

    .game-play:not([hidden]) {
        flex: 1 1 auto;
        min-height: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        touch-action: none;
        overscroll-behavior: none;
    }

    #game-canvas {
        width: min(100%, 58vmin);
        max-height: min(58vmin, calc(100dvh - 16rem));
        touch-action: none;
        overscroll-behavior: none;
        user-select: none;
        -webkit-user-select: none;
    }

    .game-dpad {
        grid-template-columns: repeat(3, 3.35rem);
        grid-template-rows: repeat(3, 3.35rem);
        gap: 0.4rem;
        margin-top: 0.65rem;
    }

    .game-dpad-btn {
        border-radius: 14px;
        font-size: 1rem;
    }

    body.game-page.is-playing .game-leaderboard {
        display: none;
    }

    .game-leaderboard {
        flex: 0 0 auto;
        max-height: 28dvh;
        overflow: hidden;
        padding: 0.85rem 1rem;
    }

    .game-leaderboard ol {
        max-height: 16dvh;
        overflow: hidden;
    }

    .game-next-line {
        display: none;
    }

    .game-over-panel {
        position: relative;
        inset: auto;
        margin-top: 0.75rem;
    }
}