.juego-container {
    min-height: 100vh;
    padding: 20px;
    position: relative;
}

.sopa-letras-container {
    display: flex;
    gap: 30px;
    max-width: 1200px;
    margin: 50px auto;
    background: white;
    padding: 30px;
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
}

/* Panel de Palabras */
.panel-palabras {
    width: 300px;
    padding: 20px;
    background: rgba(78, 205, 196, 0.1);
    border-radius: 20px;
}

.panel-palabras h2 {
    color: var(--color-primary);
    margin-bottom: 20px;
    text-align: center;
}

.lista-palabras {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.palabra-item {
    padding: 10px;
    background: white;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
}

.palabra-item.encontrada {
    background: var(--color-success);
    color: #666;
    text-decoration: line-through;
    opacity: 0.8;
}

/* Tablero de Sopa de Letras */
.tablero-container {
    overflow: auto;
    max-width: 100%;
    margin: 0 auto;
    padding: 20px;
}

.tablero {
    display: grid;
    gap: 2px;
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 8px;
    margin: 0 auto;
}

.letra-celda {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: white;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
}

.letra-celda:hover {
    background: var(--color-accent);
    color: white;
}

.letra-celda.seleccionada {
    background-color: rgba(33, 150, 243, 0.3); /* Azul semi-transparente */
    transform: scale(1.1);
    transition: all 0.2s ease;
}

.letra-celda.encontrada {
    background-color: #4CAF50;
    color: white;
    transform: scale(1);
}

.btn-atras {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 10px 20px;
    font-size: 1.2em;
    border: none;
    border-radius: 15px;
    background: var(--color-primary);
    color: white;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-atras:hover {
    transform: translateX(-5px);
    background: var(--color-secondary);
}

.numero-celda {
    font-weight: bold;
    color: #2196F3; /* Color azul para números */
}


/* Responsive */
/* Ajustar el responsive para el nivel intermedio */
@media (max-width: 768px) {
    .sopa-letras-container {
        flex-direction: column;
        padding: 15px;
    }

    .panel-palabras {
        width: 100%;
    }

    .letra-celda {
        width: 30px ; /* Forzar tamaño en móvil */
        height: 30px ;
        font-size: 14px ;
    }
    
    .tablero-container {
        overflow-x: auto;
        padding: 10px;
    }
}

/* Estilos para las pantallas de selección */
.pantalla {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background-color: var(--color-background);
}

/* Contenedor de nivel */
.nivel-container {
    padding: 30px;
    max-width: 800px;
    width: 90%;
}

.nivel-container h2 {
    text-align: center;
    color: var(--color-text);
    margin-bottom: 30px;
    font-size: 2em;
}

/* Contenedor de categorías (mantiene el fondo blanco) */
.categoria-container {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    max-width: 800px;
    width: 90%;
}

.categoria-container h2 {
    text-align: center;
    color: var(--color-text);
    margin-bottom: 30px;
    font-size: 2em;
}

/* Grid de categorías */
.categorias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

/* Botones de categoría */
.btn-categoria {
    background: white;
    border: none;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.btn-categoria:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.categoria-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.btn-categoria h3 {
    color: var(--color-text);
    margin: 0;
    font-size: 1.2em;
}

.btn-categoria p {
    color: #666;
    margin: 0;
    font-size: 0.9em;
}

/* Botón volver */
.btn-volver {
    display: block;
    margin: 0 auto;
    padding: 10px 25px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    transition: all 0.3s ease;
}

.btn-volver:hover {
    background: var(--color-secondary);
    transform: translateX(-5px);
}

/* Responsive */
@media (max-width: 768px) {
    .categorias-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }

    .btn-categoria {
        padding: 15px;
    }

    .categoria-icon {
        font-size: 2em;
    }

    .btn-categoria h3 {
        font-size: 1em;
    }

    .btn-categoria p {
        font-size: 0.8em;
    }
}

@media (max-width: 480px) {
    .categorias-grid {
        grid-template-columns: 1fr;
    }

    .categoria-container {
        padding: 20px;
    }

    .categoria-container h2 {
        font-size: 1.5em;
    }
}