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

:root {
    --spacing-large: 2rem;
}
body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-content: center;
    background: black;
    font-family: system-ui, sans-serif;
}

.header-area {
    position: fixed;
    top: var(--spacing-large);
    bottom: auto;
    left: var(--spacing-large);
    right: auto;
    width: auto;
    padding: 0;
    display: flex;
    justify-content: flex-end;
    z-index: 10;
}

.center-logo {
    text-align: center;
    z-index: 10;
    height: 3rem;
    padding: 0.45rem 1.6rem;
    background: rgba(255, 255, 255, 0.18);
    border-radius: 2.25rem;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#logo-image {
    height: 4.5rem;
    width: auto;
}


.gallery {
    --_size: 250px;
    --_gap: .5rem;
    --_grid-cols: var(--_size) var(--_size) var(--_size);
    --_grid-rows: var(--_size) var(--_size) var(--_size);
    --_size-hover: calc(var(--_size) * 2);
    --_size-not-hover: calc(var(--_size) / 2);
     --_speed: 500ms;
  
    width: 100%;
    max-width: 800px;
    display: grid;
    gap: var(--_gap);
}

@media (min-width:720px) {
    .gallery {
        grid-template-columns: var(--_grid-cols);
        transition: var(--_speed) ease-in-out;
    }
}

.gallery>div {
    height: fit-content;
    display: grid;
    grid-template-rows: var(--_grid-rows);
    gap: var(--_gap);
    transition: var(--_speed) ease-in-out;
}

.gallery article {
    position: relative;
    overflow: hidden;
}

.gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: sepia(75%);
    transition: filter var(--_speed);
}
.gallery img:hover{
  filter: sepia(0);
}

/* likes - not really relevant */
/* likes hidden */
.gallery>div>article>div { display: none; }


/* hover - parent columns */
.gallery:has(>div:nth-child(1):hover) {
    --_grid-cols: var(--_size-hover) var(--_size-not-hover) var(--_size-not-hover);
}

.gallery:has(>div:nth-child(2):hover) {
    --_grid-cols: var(--_size-not-hover) var(--_size-hover) var(--_size-not-hover);
}

.gallery:has(>div:nth-child(3):hover) {
    --_grid-cols: var(--_size-not-hover) var(--_size-not-hover) var(--_size-hover);
}


/* hover - child rows */
.gallery>div:has(>article:nth-child(1):hover) {
    --_grid-rows: var(--_size-hover) var(--_size-not-hover) var(--_size-not-hover);
}

.gallery>div:has(>article:nth-child(2):hover) {
    --_grid-rows: var(--_size-not-hover) var(--_size-hover) var(--_size-not-hover);
}

.gallery>div:has(>article:nth-child(3):hover) {
    --_grid-rows: var(--_size-not-hover) var(--_size-not-hover) var(--_size-hover);
}


/* hearts */
.material-fill-1 {
    font-variation-settings:
        'FILL'1,
        'wght'400,
        'GRAD'0,
        'opsz'48
}

/* Copyrights block (aligned like index) */
.copyrights {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    text-align: right;
    z-index: 20;
    font-family: "PP Neue Montreal", Arial, sans-serif;
    font-size: 0.95rem;
    color: #e0e0e0;
    opacity: 0.9;
}

/* Lightbox */
.lightbox-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    padding: 1.5rem;
}
.lightbox-backdrop.show {
    display: flex;
}
.lightbox-content {
    max-width: 95vw;
    max-height: 95vh;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}
.lightbox-content img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
}
.lightbox-close {
    position: absolute;
    top: 1rem;
    right: 1.4rem;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 2rem;
    cursor: pointer;
}