body { min-height: 100vh; }
#nav-placeholder { position: sticky; top: 0; z-index: 1030; background: var(--site-surface); }
.section-label { color: var(--site-accent); font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.oleg-photo { display: block; width: 100%; padding: 0; cursor: zoom-in; overflow: hidden; aspect-ratio: 4 / 3; border: 1px solid var(--site-border); border-radius: 12px; background: var(--site-surface); }
.oleg-photo img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .2s ease; }
.oleg-photo:hover { border-color: var(--site-accent); }
.oleg-photo:hover img { transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) { .oleg-photo img { transition: none; } .oleg-photo:hover img { transform: none; } }

body.photo-popup-open { overflow: hidden; }
#photo-popup { position: fixed; inset: 0; margin: auto; width: fit-content; max-width: 96vw; max-height: 96vh; max-height: 96dvh; padding: 3.5rem .75rem .75rem; border: 1px solid var(--site-border); border-radius: 12px; background: var(--site-surface); color: var(--site-text); overflow: auto; }
#photo-popup::backdrop { background: color-mix(in srgb, var(--site-bg) 85%, transparent); }
#photo-popup-image { display: block; width: auto; height: auto; max-width: calc(96vw - 1.5rem - 2px); max-height: calc(96vh - 4.25rem - 2px); max-height: calc(96dvh - 4.25rem - 2px); object-fit: contain; margin: auto; }
#photo-popup-close { position: absolute; top: .5rem; right: .75rem; width: 2.5rem; height: 2.5rem; padding: 0; border: 1px solid var(--site-border); border-radius: 50%; background: var(--site-raised); color: var(--site-text); font-size: 1.75rem; line-height: 1; cursor: pointer; }
#photo-popup-close:hover { background: var(--site-hover); color: var(--site-accent); }

#photo-popup-close::before,
#photo-popup-close::after { content: ""; position: absolute; top: 50%; left: 50%; width: 1rem; height: 2px; background: currentColor; border-radius: 1px; transform: translate(-50%, -50%) rotate(45deg); }
#photo-popup-close::after { transform: translate(-50%, -50%) rotate(-45deg); }