:root{color-scheme:dark;--navy:#000066;--panel:#071b43;--yellow:#ffff00;--cream:#f2dfac;--line:#385b91;--link:#77c9ef}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--navy);color:var(--yellow);font-family:Arial,Helvetica,sans-serif;font-size:14px;line-height:1.7}
a{color:var(--link);text-underline-offset:3px}
a:focus-visible,button:focus-visible{outline:3px solid var(--cream);outline-offset:4px}
button{font:inherit}
.skip-link{position:absolute;top:-100px;right:16px;padding:10px 16px;background:var(--panel);z-index:10}
.skip-link:focus{top:8px}
.page-header{width:min(100% - 32px,1040px);margin:0 auto;padding-top:22px;text-align:center}
.masthead-links{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px;font-size:16px}
.masthead-links a{text-decoration:none}
.masthead-links a:hover{text-decoration:underline}
.banner{display:block;width:100%;height:auto;margin:auto;border-radius:5px}
h1{font-size:clamp(28px,5vw,40px);line-height:1.25;color:var(--cream);margin:26px 0 28px}
main{width:min(100% - 32px,1040px);margin:0 auto 44px}
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start}
.photo-card{width:100%;min-width:0;max-width:none;justify-self:center;margin:0;background:var(--panel);border:1px solid var(--line);border-radius:8px;overflow:hidden}
.photo-open{display:block;cursor:zoom-in;background:#030a22;line-height:0}
.photo-open img{display:block;width:100%;height:auto}
.photo-open:hover{outline:2px solid var(--cream);outline-offset:-2px}
.photo-open:focus-visible{outline-offset:-4px}
figcaption{padding:16px 18px;text-align:center;overflow-wrap:anywhere}
.photo-caption{display:block;margin:0;line-height:1.8;color:var(--yellow);font-size:14px}
.photo-credit{display:block;color:var(--cream);font-size:12px;font-weight:400;margin:8px 0 0;line-height:1.5}
.site-footer{width:min(100% - 32px,1000px);margin:0 auto;padding:22px 0 30px;border-top:1px solid var(--cream);text-align:center;font-size:14px}
.footer-links{display:flex;justify-content:center;gap:12px 26px;flex-wrap:wrap}
.site-footer p{margin:14px auto 0}
.disclaimer{max-width:900px;line-height:1.7}
.copyright{font-weight:bold}
.viewer-open{overflow:hidden}
.photo-viewer{width:min(96vw,1400px);max-width:none;max-height:94dvh;padding:0;margin:auto;background:#030b24;color:var(--yellow);border:1px solid #6583b0;border-radius:8px;overflow:auto;box-shadow:0 20px 80px #000a}
.photo-viewer::backdrop{background:#000d}
.photo-viewer[open]{display:block}
.viewer-top{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:10px 14px;border-bottom:1px solid var(--line)}
.viewer-heading{margin:0;color:var(--cream);font-size:16px;font-weight:400}
.viewer-close{display:grid;place-items:center;width:44px;height:44px;padding:0;background:var(--panel);color:var(--cream);border:1px solid var(--line);border-radius:5px;font-size:30px;line-height:1;cursor:pointer}
.viewer-figure{margin:0}
.viewer-image-frame{display:grid;place-items:center;padding:12px;background:#010615}
.viewer-image{display:block;max-width:100%;width:auto;height:auto;max-height:calc(94dvh - 215px);object-fit:contain;margin:auto}
.viewer-figure figcaption{padding:12px 18px 18px;max-width:1100px;margin:auto}
.viewer-controls{display:flex;justify-content:center;align-items:center;gap:14px;padding:0 12px 14px}
.viewer-controls[hidden]{display:none}
.viewer-controls button{min-height:44px;padding:8px 16px;background:var(--panel);color:var(--cream);border:1px solid var(--line);border-radius:5px;cursor:pointer}
.viewer-position{color:var(--cream);font-size:12px}
@media(max-width:900px){.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.page-header,main,.site-footer{width:calc(100% - 24px)}.page-header{padding-top:16px}.masthead-links{font-size:14px;margin-bottom:14px}.masthead-links a{min-height:44px;display:flex;align-items:center}.gallery{grid-template-columns:1fr;gap:22px}h1{margin:22px 0}.photo-card{max-width:520px}figcaption{padding:13px 14px}.site-footer{padding-bottom:24px}.footer-links{gap:10px 20px}.photo-viewer{width:96vw;max-height:96dvh}.viewer-top{padding:7px 10px}.viewer-image-frame{padding:6px}.viewer-image{max-height:calc(96dvh - 235px)}.viewer-figure figcaption{padding:10px 13px 15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Keep portrait photographs compact and complete in the thumbnail grid. */
.photo-open img.portrait-thumbnail{max-height:260px;object-fit:contain}

/* Equal thumbnail frames for the three complete aerial photographs. */
.photo-card[data-series="tanin-england-1959"] .photo-open{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.photo-card[data-series="tanin-england-1959"] .photo-open img{width:100%;height:100%;object-fit:contain}

.photo-credit[hidden]{display:none}