body {
    font-family: var(--font-family);
    overflow-x: hidden;
    background-color: var(--clr-100);
}

#header-gallery {
    background: var(--clr-100);
    color: var(--clr-20);
    padding: 1em;
    margin: 5rem 0;
    text-align: center;

    h1 {
        font-size: var(--font-size-first);
    }

    h1,
    nav {
        margin-bottom: 1rem;
    }

    ul {
        text-align: center;

        li {
            display: inline;
            padding: 0.5rem;

            button {
                background: var(--clr-60);
                color: var(--clr-20);
                box-shadow: var(--shadow-00);
                transform: scale(1);
                cursor: pointer;
                padding: 1rem;
                transition: all 0.3s ease;
            }

            button:hover {
                background: var(--clr-40);
                transform: scale(0.97);
                box-shadow: none;

            }
        }
    }
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1em;
    position: relative;
    height: auto;
}
.container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: auto;

    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: auto;
    padding: 1rem;
    gap: 1rem;
    grid-auto-flow: dense;

    transition: opacity 0.7s, transform 0.7s;
}
.hidden {
    transform: scale(0.8);
    opacity: 0;
    pointer-events: none;
}
.active {
    transform: scale(1);
    opacity: 1;
    pointer-events: all;
}

.boxImage {
    width: 100%;
    height: auto;
    overflow: hidden;

    img {
        max-width: 100%;
        max-height: 100%;
        width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        object-fit: cover;
        cursor: pointer;
        transform: scale(1);
        transition: 0.3s ease;
    }
    
    img:hover {
        transform: scale(1.1);
    }
}


#scrollToTopBtn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: none;
    background-color: var(--clr-100);
    color: var(--clr-40);
    border: none;
    border-radius: 50%;
    padding: 0.5rem;
    cursor: pointer;
    box-shadow: 0px 2px 5px var(--clr-40);
    transition: opacity 0.3s;
    z-index: 1000;

    svg {
        fill: var(--clr-20);
        width: 24px;
        height: 24px;
    }
}

#scrollToTopBtn.show {
    display: block;
}

/* Modal styles */
.modal {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    transform: scale(0);
    opacity: 0;
    transition: all 0.9s cubic-bezier(0.23, 1, 0.320, 1);
    background-color: var(--bg-transparent-color);
    justify-content: center;
    align-items: center;
}

.modal-content {
    padding: 20px;
    max-width: 85%;
    max-height: 85%;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow: scroll;
    scrollbar-width: none;
}

/* WebKit (Chrome, Safari, Edge) */
.modal-content::-webkit-scrollbar {
    width: none;
    height: none;
}

.modal-content img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: s-resize;
}

.modal .prev,
.modal .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: var(--border-radius);
    border: none;
    color: var(--clr-00);
    font-size: 20px;
    cursor: pointer;
    padding: 10px;
}

.modal .prev {
    left: 15%;
}

.modal .next {
    right: 15%;
}

/* Hide class */
.hide {
    display: none;
}

/* Para dispositivos pequeños (móviles) */
@media (max-width: 600px) {
    .filters {
        flex-direction: column;
        align-items: center;

        button {
            margin-bottom: 0.5rem;
        }
    }

    main {

        .container {
            grid-template-columns: 1fr;
            grid-gap: 0.5rem;
            .boxImage { 
                
                img {
                    width: 100%;
                    height: auto;
                }
            }
        }
    }

    .modal {
        width: 100vw;
        height: 92vh;
        margin-top: 8vh;
    }
    
    .modal-content {
        width: 95%;
        height: 95%;
    }

}

/* Para dispositivos medianos (tablets) */
@media (min-width: 601px) and (max-width: 1024px) {
    main {
        .container {
            grid-template-columns: repeat(2, 1fr);
            grid-gap: 1rem;
            .boxImage {

                img {
                    width: 100%;
                    height: auto;
                }
            }
        }
    }
}