body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    padding: 10px;
    overflow-y: auto; /* Permitir scroll vertical */
    min-height: 100vh;
}

h1 {
    margin: 10px 0;
    font-size: 1.5rem;
    text-align: center;
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    background-color: #fff;
    padding: 10px 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 600px;
}

.color-bar {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.color-group {
    display: flex;
    flex-direction: column;
}

.group-label {
    font-size: 0.8em;
    color: #666;
    margin-bottom: 4px;
}

.color-row {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: 1px solid #ccc;
    cursor: pointer;
    transition: transform 0.1s, border-color 0.1s;
    touch-action: manipulation;
    /* Mejorar toque en móviles */
}

.color-swatch:hover {
    transform: scale(1.1);
}

.color-swatch.active {
    border-color: #007bff;
    border-width: 2px;
}

#clear-button,
#save-button,
#eraser-button {
    padding: 8px 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #fff;
    cursor: pointer;
    font-size: 1em;
    touch-action: manipulation;
}

#clear-button:hover,
#save-button:hover,
#eraser-button:hover {
    background-color: #e9e9e9;
}

#eraser-button.active {
    background-color: #cce5ff;
    border-color: #007bff;
}

#drawing-canvas {
    background-color: white;
    border: 1px solid #ccc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    cursor: crosshair;
    max-width: 100%;
    touch-action: none; /* Solo el canvas previene gestos */
    display: block;
    margin-bottom: 20px;
}

/* Media Queries para Móviles */
@media (max-width: 768px) {
    h1 {
        font-size: 1.2rem;
        margin: 5px 0;
    }

    .toolbar {
        gap: 10px;
        padding: 8px 10px;
    }

    .color-bar {
        gap: 5px;
    }

    .group-label {
        font-size: 0.7em;
    }

    .color-row {
        gap: 3px;
    }

    .color-swatch {
        width: 28px;
        /* Más grande para dedos */
        height: 28px;
    }

    #clear-button,
    #save-button,
    #eraser-button {
        padding: 10px 12px;
        /* Botones más grandes para tocar */
        font-size: 0.9em;
    }

    #drawing-canvas {
        width: calc(100vw - 20px) !important;
        height: 50vh !important;
        max-height: 500px;
    }
}

@media (max-width: 480px) {
    .toolbar {
        flex-direction: column;
        gap: 8px;
        padding: 8px;
    }

    .color-swatch {
        width: 32px;
        /* Aún más grande en pantallas muy pequeñas */
        height: 32px;
    }

    #clear-button,
    #save-button,
    #eraser-button {
        width: 100%;
        padding: 12px;
    }
}