.slider {
    position: relative;
    display: flex;
    flex-direction: column;
}

.slider input[type="radio"] {
    display: none;
}

.slider-controls {
    display: flex;
    justify-content: center;
}

.slider-controls label {
    display: inline-block;
    margin: 10px;
    padding: 5px;
    width: 20px;
    height: 20px;
    border: 5px solid rgb(215, 222, 255);
    box-shadow: 0 0 2px 1px black;
    border-radius: 10px;
    cursor: pointer;
    transition:
        color 0.5s,
        background-color 0.5s,
        transform 1s;

    text-align: center;
    background-color: transparent;
    color: black;
    font-weight: bolder;
}

.slider-controls label:hover {
    transform: scale(1.1);
}

#btn-1:checked ~ .slider-controls label[for="btn-1"],
#btn-2:checked ~ .slider-controls label[for="btn-2"],
#btn-3:checked ~ .slider-controls label[for="btn-3"] {
    background-color: rgb(88, 127, 186);
    color: rgb(215, 222, 255);
}

.gallery {
    position: relative;
    padding: 0;
    margin-left: auto;
    margin-right: auto;
}

.panel {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    padding: 10px;
}

#btn-1:checked ~ .gallery .panel:not(:nth-child(1)),
#btn-2:checked ~ .gallery .panel:not(:nth-child(2)),
#btn-3:checked ~ .gallery .panel:not(:nth-child(3)) {
    display: none;
}

#btn-1:checked ~ .gallery .panel:nth-child(1),
#btn-2:checked ~ .gallery .panel:nth-child(2),
#btn-3:checked ~ .gallery .panel:nth-child(3) {
    display: flex;
}

/**************/

.panel figure {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    text-align: center;
    padding: 1vmax;
    margin: 0.5vmax;
    cursor: pointer;

    max-width: 30%;
    height: 50vmin;
    background-color: rgb(215, 222, 255);
    box-shadow: 0 0 2px 2px rgb(215, 222, 255);

    transition: 1s;
}

.panel figure:hover {
    background-color: rgb(180, 189, 224);
    box-shadow: 0 0 4px 2px rgb(180, 189, 224);
}

.panel figure img {
    height: 30vmin;
    margin: auto;
}

.panel figcaption {
    margin-left: 0.5vmax;
    margin-right: 0.5vmax;
    padding: 0.25vmax;
    border: 3px solid rgb(88, 127, 186);
    border-radius: 2vmax;
}

.panel figcaption p {
    margin: 1%;
}

/**************/
.large-picture {
    display: none;

    justify-content: center;

    position: fixed;
    top: 0;
    left: 0;
    z-index: 10;
    width: 100%;
    height: 100%;
    text-align: center;
    background-color: rgba(88, 127, 186, 0.8);
}

.large-picture.visible {
    display: flex;
}

.button {
    cursor: pointer;
}

.button.previous, .button.following {
    width: 50px;
    height: 50px;
    margin: auto 10px auto;
    border-radius: 50%;
    background-color: rgb(215, 222, 255);
    position: relative;

    transition: 0.5s;
}

.button.previous:hover, .button.following:hover {
    transform: scale(1.1);
}

.button.previous::before, .button.previous::after,
.button.following::before, .button.following::after {
    content: "";
    display: block;
    width: 30px;
    height: 10px;
    border-radius: 5px;
    transition: 1s;

    position: absolute;
    top: 20px;
    left: 10px;
    background-color: rgb(36, 65, 109);
}

.button.previous::before {
    transform-origin: 5px 5px;
    transform: rotate(-45deg);
}

.button.previous::after {
    transform-origin: 5px 5px;
    transform: rotate(45deg);
}

.button.following::before {
    transform-origin: 25px 5px;
    transform: rotate(-45deg);
}

.button.following::after {
    transform-origin: 25px 5px;
    transform: rotate(45deg);
}

.button.lock {
    cursor: default;
}

.button.previous.lock::before, .button.previous.lock::after,
.button.following.lock::before, .button.following.lock::after {
    transform-origin: 50% 50%;
    transform: rotate(90deg);
}

.button.close-picture {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: lightcoral;
    position: relative;
    transition: 0.5s;
}

.button.close-picture::before, .button.close-picture::after {
    content:"";
    display: block;
    width: 30px;
    height: 8px;
    border-radius: 5px;

    position: absolute;
    top: 16px;
    left: 5px;
    background-color: firebrick;
    transform-origin: 15px 4px;
}

.button.close-picture:hover {
    transform: rotate(90deg);
}

.button.close-picture::before {
    transform: rotate(45deg);
}

.button.close-picture::after {
    transform: rotate(-45deg);
}

.close-picture-box {
    position: absolute;
    top: -20px;
    right: -20px;
}

.button.count-picture {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgb(180, 189, 224);

    cursor: default;
    color: rgb(36, 65, 109);
    font-weight: bold;

    position: absolute;
    top: -25px;
    left: -25px;

    display: flex;
    flex-direction: column;
    justify-content: space-around;
    text-align: center;
}

.large-picture figure {
    margin: auto 10px auto;
    position: relative;
    text-align: center;
}

.large-picture figure img {
    height: 75vmin;
    margin-bottom: -5px;
}

.large-picture figcaption {
    width: fit-content;
    padding: 5px;
    margin: 0 auto 0;
    background-color: rgb(215, 222, 255);
    border-bottom-left-radius: 25px;
    border-bottom-right-radius: 25px;
}

.large-picture figcaption p {
    margin: 4px 10px 4px;
}