* {
    box-sizing: border-box;
}

::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--muted);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

body {
    margin: 0;
    font-family: var(--primary-font);
    background: radial-gradient(
            800px 400px at 10% 10%,
            rgba(21, 199, 138, 0.03),
            transparent
        ),
        linear-gradient(180deg, var(--bg-1), var(--bg-2));
    color: var(--text-color);
    display: flex;
    justify-content: center;
    padding: 25px;
    height: 100vh;
}

.hidden {
    display: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    display: grid;
    grid-template-columns: minmax(320px, 720px) 360px;
    gap: 40px;
}

.game-section,
.leaderboard {
    background: var(--card-bg);
    border-radius: var(--section-border-radius);
    padding: var(--section-padding);
    box-shadow: var(--glass-shadow);
    border: var(--border-style);
}

h1 {
    margin: 0 0 var(--ui-gap-md) 0;
    font-family: var(--secondary-font);
    font-size: 18px;
    color: var(--accent);
    letter-spacing: 1px;
    text-align: center;
}

.user-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--ui-gap-md);
}

.user-info {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: var(--ui-gap-sm);
}

.settings-icon {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: var(--ui-gap-sm);
    border-radius: var(--radius-sm);
    color: var(--accent);
    cursor: pointer;
}
.settings-icon:hover {
    background: rgba(255, 255, 255, 0.01);
}
.settings-icon:focus {
    outline: 2px solid rgba(21, 199, 138, 0.12);
    outline-offset: 3px;
}

.game-container {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 1/1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(180deg, #02110f, #041518);
    border: var(--border-style-accent);
    box-shadow: var(--shadow-inset);
    margin: 0 auto;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: var(--canvas-bg);
    image-rendering: pixelated;
}

.scoreboard,
.levelboard {
    margin-top: 10px;
    background: linear-gradient(90deg, rgba(21, 199, 138, 0.03), transparent);
    padding: 8px 12px;
    border-radius: 999px;
    border: var(--border-style);
    color: var(--text-dim);
    font-weight: 600;
    display: inline-block;
}

.controls {
    margin-top: var(--ui-gap-lg);
    color: var(--muted);
    font-size: 18px;
    text-align: center;
}

@media (max-width: 900px) {
    .container {
        grid-template-columns: 1fr;
    }
    .game-section {
        padding: var(--ui-gap-lg);
    }
    .game-container {
        max-width: 100%;
    }
    .scoreboard {
        position: static;
        margin: var(--ui-gap-sm) auto 0;
    }
    .controls {
        font-size: 14px;
    }
}