:root {

    --color-bg-light-mint: #e4fde1;       /* Lightest, for backgrounds */
    --color-accent-teal: #6ba292;         /* Calm accent, good for borders, secondary buttons */
    --color-highlight-yellow: #ffdc7c;    /* Softer yellow, for highlights or primary buttons */
    --color-accent-coral: #ff9b71;        /* Warm accent, for interactive elements */
    --color-strong-red: #dd614a;          /* Strongest color, for primary actions or important info */

    /* Retained/Adjusted Neutrals & Text Colors */
    --color-dark-text: #4A3F35;
    --color-canvas-bg: #FFFFFF;
    --color-light-grey: #D3D3D3;

    /* Fonts (Keeping previous choices, adjust if needed) */
    --font-headings: 'Lilita One', cursive;
    --font-body: 'Quicksand', sans-serif;
    --font-vocabulary: 'Nunito', sans-serif;

    /* UI Styling */
    --border-radius-soft: 8px;
    --box-shadow-light: 0 4px 8px rgba(0, 0, 0, 0.1);
    --app-height: 100%;
}


*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;

    height: 100vh;
    height: var(--app-height);

    overflow: hidden;
    position: fixed; /* Previne qualquer movimento do body */
}

body {
    font-family: var(--font-body), serif;
    background-color: var(--color-bg-light-mint);
    color: var(--color-dark-text);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    text-align: center;
}


canvas#gameCanvas {

    touch-action: none;
    display: block;
    width: 100%;
    height: 100%;
    border: 3px solid var(--color-accent-teal);
    border-radius: var(--border-radius-soft);
}


.controls {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
    display: flex;
    gap: 10px;
}

#music-toggle-btn {
    width: 45px;
    height: 45px;
    font-size: 1.3em;
    color: var(--color-strong-red);
    background-color: rgba(228, 253, 225, 0.7);
    border: 2px solid var(--color-accent-coral);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

#music-toggle-btn:hover,
#music-toggle-btn:focus-visible {
    background-color: rgba(255, 220, 124, 0.7); /* Semi-transparent yellow on hover */
    transform: scale(1.1);
    color: var(--color-accent-teal);
    border-color: var(--color-accent-teal);
}

#music-toggle-btn.paused {
    background-color: rgba(107, 162, 146, 0.3); /* Muted teal */
    color: var(--color-strong-red);
    border-color: var(--color-strong-red);
}

@media only screen and (max-width: 500px) {
    #music-toggle-btn {
        width: 25px;
        height: 25px;
        font-size: 0.8em;
    }
}