/* BRO Sandbox v2 — light, airy theme. System variable font stacks only (no downloads). */
:root{
--bg:#f7f6f3;--bg2:#efede8;--panel:#ffffff;--panel-solid:#ffffff;
--line:#e4e1da;--line-strong:#cdd3dc;
--text:#1e293b;--muted:#4b5563;--accent:#0b63a8;--accent-soft:#e6f0f9;--gold:#b45309;
--r-sm:.625rem;--r:1rem;--r-lg:1.5rem;
--shadow:0 1px 2px rgba(30,41,59,.05),0 8px 24px -12px rgba(30,41,59,.18);
--sans:"Inter var",Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI Variable Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
--display:"Segoe UI Variable Display",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
--serif:ui-serif,"Iowan Old Style","Charter","Georgia",serif;
--ease:cubic-bezier(.2,.7,.2,1)}
*{box-sizing:border-box}
html{color-scheme:light;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:400 clamp(1rem,.96rem + .2vw,1.0625rem)/1.7 var(--sans);color:var(--text);
-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
background:radial-gradient(1000px 520px at 85% -10%,#e3edf8,transparent 65%),linear-gradient(180deg,var(--bg),var(--bg2));background-attachment:fixed;min-height:100vh}
img{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:.2em;text-decoration-thickness:1px;transition:color .2s var(--ease)}
a:hover{color:#084a7e}
:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:.35rem}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:#fff;color:var(--accent);box-shadow:var(--shadow);padding:.6rem 1rem;border-radius:var(--r-sm);z-index:20}
.wrap{width:min(100% - 2.5rem,74rem);margin-inline:auto}
h1,h2,h3,.page-title{font-family:var(--display);letter-spacing:-.02em;font-weight:650;text-wrap:balance}
h2,h3{font-size:clamp(1.35rem,1.1rem + 1vw,1.85rem);line-height:1.2;margin:0 0 1rem}
h2 a,h3 a{color:var(--text);text-decoration:none}h2 a:hover,h3 a:hover{color:var(--accent)}
p{text-wrap:pretty}

/* glassy sticky header */
header.site{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.75);-webkit-backdrop-filter:saturate(160%) blur(14px);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:center;justify-content:space-between;padding:.8rem 0}
.brand{font:650 1.05rem/1 var(--display);letter-spacing:.01em;text-decoration:none;color:var(--text);display:inline-flex;align-items:center;gap:.6rem}
.brand::before{content:"";width:.6rem;height:.6rem;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.site-nav ul,.sub-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.35rem}
.site-nav a,.sub-nav a{display:inline-block;text-decoration:none;font-size:.92rem;font-weight:500;padding:.45rem .85rem;border-radius:999px;color:var(--muted);border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.site-nav a:hover,.sub-nav a:hover{color:var(--text);background:var(--accent-soft)}
.site-nav a[aria-current],.sub-nav a[aria-current]{color:var(--text);background:var(--accent-soft);border-color:var(--line-strong)}

/* page title + hero */
.page-title{font-size:clamp(2.4rem,1.4rem + 5vw,5rem);line-height:1;margin:clamp(2.5rem,7vw,5.5rem) 0 clamp(1.25rem,3vw,2rem);
color:#0f1b2d}
.hero{display:grid;gap:clamp(1.25rem,3vw,2.5rem);align-items:center;padding:clamp(2rem,6vw,4.5rem) 0}
.hero h1{font-size:clamp(2.2rem,1.3rem + 4.5vw,4.5rem);line-height:1.02;margin:0 0 1.25rem;
color:#0f1b2d}
.hero.card{padding:clamp(1.25rem,4vw,2.75rem);border-radius:var(--r-lg);
background:linear-gradient(135deg,#ffffff,#f1f6fb);border:1px solid var(--line)}
.hero .obs{margin:0}
.hero .obs a{display:block;border-radius:var(--r);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.hero .obs img{display:block;width:100%;transition:transform .5s var(--ease)}
.hero .obs a:hover img{transform:scale(1.03)}
blockquote{margin:0;padding-left:1.1rem;border-left:2px solid var(--accent);font:italic 400 clamp(1.1rem,1rem + .55vw,1.4rem)/1.55 var(--serif);color:#334155}
blockquote p{margin:0}
blockquote footer{font:500 .9rem/1 var(--sans);font-style:normal;letter-spacing:.04em;margin-top:.9rem;color:var(--muted)}

/* cards */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(1.25rem,3vw,2rem);box-shadow:var(--shadow);}
.card ul{margin:.25rem 0 1.25rem;padding-left:1.15rem}
.card li{margin:.15rem 0}.card li::marker{color:var(--accent)}
.welcome p{margin:0 0 1.1rem}
.cols{display:grid;gap:clamp(1rem,2.5vw,1.75rem);margin:0 0 3rem}

/* sub nav */
.sub-nav{padding:.5rem;margin:0 0 2.5rem;border:1px solid var(--line);border-radius:999px;background:var(--panel);box-shadow:var(--shadow);width:fit-content;max-width:100%}
.sub-nav p{margin:0 0 .25rem;font-weight:600;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
@media (max-width:40rem){.sub-nav{border-radius:var(--r)}}

/* gallery buttons */
.galleries{margin-bottom:2.5rem}
.galleries ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem}
.galleries a{display:block;text-decoration:none;color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-weight:550;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.galleries a:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 14px 30px -14px rgba(11,99,168,.28)}
.galleries img{display:block;width:100%;height:auto;aspect-ratio:126/73;object-fit:cover}
.galleries span{display:block;padding:.6rem .85rem;font-size:.95rem}
.click{font-size:.8rem;font-weight:600;letter-spacing:.1em;text-align:center;color:var(--muted);margin:1.25rem 0 0}

/* feature image */
.feature{margin:0 0 3rem}
.feature img,.feature a{display:block;width:100%;border-radius:var(--r-lg)}
.feature a{overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.feature > img{border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.feature a img{border-radius:0;transition:transform .6s var(--ease)}.feature a:hover img{transform:scale(1.02)}
.feature figcaption{color:var(--muted);font-size:.85rem;letter-spacing:.02em;text-align:right;margin-top:.6rem}

.clock{text-align:center;margin:0 0 3rem;overflow-x:auto}
.clock img{border-radius:var(--r-sm);border:1px solid var(--line-strong)}
footer.site{border-top:1px solid var(--line);padding:1.75rem 0;text-align:center;font-size:.875rem;color:var(--muted);background:#ffffff}
footer.site a{color:var(--muted)}footer.site a:hover{color:var(--text)}
ins.gfix{text-decoration:underline dotted var(--gold);text-underline-offset:.2em;color:inherit}

/* breadcrumbs / gallery pages */
.crumbs ol{list-style:none;margin:1.5rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.35rem;font-size:.875rem;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:.35rem;color:var(--line-strong)}
.crumbs a{text-decoration:none}
.crumbs + .page-title{margin-top:clamp(1.25rem,4vw,2.5rem)}
.intro{max-width:46rem;margin:0 0 2rem;color:#334155;font-size:1.05em}
.grid{list-style:none;margin:0 0 3rem;padding:0;display:grid;gap:1rem;grid-template-columns:1fr}
.grid figure{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;height:100%;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.grid figure:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 14px 30px -14px rgba(11,99,168,.28)}
.grid a{display:block;overflow:hidden}
.grid img{display:block;width:100%;height:auto;aspect-ratio:228/180;object-fit:cover;transition:transform .5s var(--ease)}
.grid a:hover img{transform:scale(1.04)}
.grid figcaption{padding:.65rem .85rem;text-align:center;font-size:.92rem;font-weight:500}

/* lightbox (galaxies) */
dialog.lb::backdrop{background:rgba(0,0,0,.85);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.lb-close{position:fixed;top:.75rem;right:.75rem;font:600 1.5rem/1 var(--sans);background:#ffffff;color:#1e293b;border:1px solid #cdd3dc;border-radius:50%;width:2.75rem;height:2.75rem;cursor:pointer;transition:background .2s}
.lb-close:hover{background:var(--accent-soft)}

@media (min-width:36rem){.grid{grid-template-columns:repeat(2,1fr)}.galleries ul{grid-template-columns:repeat(3,1fr)}}
@media (min-width:48rem){.hero{grid-template-columns:minmax(14rem,20rem) 1fr}.cols{grid-template-columns:minmax(15rem,1fr) 1.8fr}}
@media (min-width:64rem){.galleries ul{grid-template-columns:repeat(5,1fr)}.grid{grid-template-columns:repeat(4,1fr)}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}
.galleries a:hover,.grid figure:hover{transform:none}.grid a:hover img,.hero .obs a:hover img,.feature a:hover img{transform:none}}

/* frame dark astro photos */
.galleries img,.grid img{border-bottom:1px solid var(--line)}
.lb p{color:#f1f5f9}

/* v3 home hero */
.home-hero{display:grid;gap:clamp(1.25rem,3vw,2.5rem);align-items:center;padding:clamp(1.5rem,5vw,4rem) 0 clamp(2rem,5vw,3.5rem)}
.home-hero .obs{margin:0}
.home-hero .obs a{display:block;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.home-hero .obs img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease)}
.home-hero .obs a:hover img{transform:scale(1.03)}
.home-hero h1{font-size:clamp(2.3rem,1.3rem + 4.5vw,4.5rem);line-height:1.02;margin:0 0 1rem;color:#0f1b2d}
.tagline{font-size:clamp(1.05rem,1rem + .4vw,1.25rem);color:var(--muted);margin:0 0 1.5rem;max-width:38rem}
.home-hero blockquote{margin-bottom:1.75rem}
ins.new-copy{text-decoration:underline dashed var(--gold);text-underline-offset:.25em}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:600;text-decoration:none;padding:.85rem 1.5rem;border-radius:999px;box-shadow:0 8px 20px -10px rgba(11,99,168,.6);transition:background .2s var(--ease),transform .2s var(--ease)}
.btn:hover{background:#084a7e;color:#fff;transform:translateY(-2px)}
.btn ins.new-copy{text-decoration-color:#ffd27a}
.cta{text-align:center;margin:0 0 3.5rem}
@media (min-width:56rem){.home-hero{grid-template-columns:1.25fr 1fr}}
@media (prefers-reduced-motion:reduce){.btn:hover{transform:none}.home-hero .obs a:hover img{transform:none}}
/* v3 nav */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
section[aria-labelledby],h1[id],h2[id],[id]{scroll-margin-top:5rem}
header.site .wrap{flex-wrap:nowrap;position:relative}
.site-nav>ul{align-items:center}
.site-nav li{position:relative}
.has-sub{display:flex;align-items:center}
.sub-toggle{width:1.9rem;height:1.9rem;border:0;border-radius:50%;background:transparent;color:var(--muted);cursor:pointer;margin-left:-.35rem}
.sub-toggle::before{content:"";display:inline-block;width:.42rem;height:.42rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-2px) rotate(45deg);transition:transform .2s var(--ease)}
.sub-toggle[aria-expanded="true"]::before{transform:translateY(1px) rotate(-135deg)}
.sub-toggle:hover{background:var(--accent-soft);color:var(--text)}
.sub{list-style:none;margin:0;padding:.4rem;display:none;flex-direction:column;gap:.1rem;position:absolute;top:calc(100% + .4rem);left:0;min-width:11rem;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.sub a{display:block;border-radius:var(--r-sm)}
.sub-toggle[aria-expanded="true"]+.sub{display:flex}
@media (hover:hover) and (min-width:48rem){.has-sub:hover .sub,.has-sub:focus-within .sub{display:flex}}
.nav-toggle{display:none;width:2.75rem;height:2.75rem;border:1px solid var(--line-strong);border-radius:var(--r-sm);background:#fff;cursor:pointer;color:var(--text)}
.bars,.bars::before,.bars::after{display:block;width:1.15rem;height:2px;background:currentColor;border-radius:2px;margin:auto;transition:transform .2s var(--ease),opacity .2s}
.bars{position:relative}.bars::before,.bars::after{content:"";position:absolute;left:0}.bars::before{top:-6px}.bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .bars{background:transparent}
.nav-toggle[aria-expanded="true"] .bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars::after{transform:translateY(-6px) rotate(-45deg)}
@media (max-width:47.99rem){
 .nav-toggle{display:inline-grid;place-items:center}
 .site-nav{display:none;position:absolute;top:calc(100% + .5rem);left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:0 16px 40px -16px rgba(30,41,59,.35);padding:.5rem}
 .menu-open .site-nav{display:block}
 .site-nav>ul{flex-direction:column;align-items:stretch}
 .site-nav a{display:block;font-size:1rem;padding:.75rem 1rem;border-radius:var(--r-sm)}
 .has-sub{flex-wrap:wrap}.has-sub>a{flex:1}
 .sub-toggle{width:2.75rem;height:2.75rem;margin:0}
 .sub{position:static;box-shadow:none;border:0;padding:0 0 0 1rem;width:100%}
}
/* fix: nested submenu must stay closed until opened */
.site-nav .sub{display:none}
.site-nav .sub-toggle[aria-expanded="true"]+.sub{display:flex}
@media (hover:hover) and (min-width:48rem){.site-nav .has-sub:hover .sub,.site-nav .has-sub:focus-within .sub{display:flex}}

/* v5: larger hero photo (sharp source) */
.hero .obs img{width:100%;height:auto}
@media (min-width:56rem){.hero{grid-template-columns:minmax(0,1.1fr) 1fr}}

.byline{font-size:clamp(1.05rem,1.2vw + .8rem,1.4rem);font-weight:500;color:#4b5563;margin:.25rem 0 1rem;letter-spacing:.01em}

/* lightbox v8: full-viewport, zoomable */
dialog.lb{border:0;padding:0;margin:0;inset:0;width:100vw;max-width:none;height:100dvh;max-height:none;background:#05070c;color:#f1f5f9;overflow:hidden}
.lb-stage{position:absolute;inset:0;overflow:hidden;touch-action:none}
.lb-stage img{position:absolute;left:0;top:0;width:100%;height:100%;max-width:none;object-fit:contain;transform-origin:0 0;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-user-drag:none;cursor:zoom-in}
dialog.lb.zoomed .lb-stage img{cursor:grab}
.lb .lb-cap{position:absolute;left:0;right:0;bottom:0;margin:0;padding:1.6rem 4rem calc(.6rem + env(safe-area-inset-bottom)) 1rem;font-size:1rem;font-weight:600;line-height:1.3;text-align:left;color:#f8fafc;background:linear-gradient(transparent,rgba(0,0,0,.72));pointer-events:none;transition:opacity .2s}
dialog.lb.zoomed .lb-cap{opacity:0}
.lb-close{position:absolute;z-index:2;top:calc(.6rem + env(safe-area-inset-top));right:.6rem}
@media (min-width:900px){.lb .lb-cap{text-align:center;font-size:.95rem;padding:1.2rem 5rem .7rem}}
/* v9: lock page scroll while a viewer/dialog is open */
html.lb-open,html:has(dialog[open]){overflow:hidden;overscroll-behavior:none}
html.lb-open body,html:has(dialog[open]) body{overflow:hidden}
dialog.lb{overscroll-behavior:contain}

/* v10: sub-nav sits above the banner */
main>.sub-nav{margin:1rem 0 1rem}

/* v11: keep the gallery menu row pinned under the sticky header */
header.site{position:sticky;top:0;z-index:10}
.sub-nav{position:sticky;top:calc(var(--hdr,4.25rem) + .5rem);z-index:9;-webkit-backdrop-filter:saturate(160%) blur(14px);backdrop-filter:saturate(160%) blur(14px);background:rgba(255,255,255,.88)}
html{scroll-padding-top:calc(var(--hdr,4.25rem) + 4.5rem)}

/* v12: single pinned menu bar (old header removed) */
.bar-nav{position:sticky;top:0;z-index:10;margin:0 calc(50% - 50vw);width:100vw;padding:.55rem max(1rem,calc(50vw - 600px));box-sizing:border-box;background:rgba(255,255,255,.9);-webkit-backdrop-filter:saturate(160%) blur(14px);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line);margin-bottom:1rem}
.bar-nav>ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.3rem;align-items:center}
.bar-nav a,.gal-toggle{display:inline-block;text-decoration:none;font-family:inherit;font-size:.92rem;font-weight:500;line-height:1.2;padding:.5rem .85rem;border-radius:999px;color:var(--muted);border:1px solid transparent;background:none;cursor:pointer;white-space:nowrap}
.bar-nav a:hover,.gal-toggle:hover{color:var(--text);background:var(--accent-soft)}
.bar-nav a[aria-current],.gal-group.has-current>.gal-toggle{color:var(--text);background:var(--accent-soft);border-color:var(--line-strong)}
.gal-toggle::after{content:"";display:inline-block;margin-left:.4rem;border:4px solid transparent;border-top-color:currentColor;vertical-align:.1em}
.gal-group{position:relative}
.gal-list{list-style:none;margin:0;padding:.4rem;display:none;flex-direction:column;gap:.1rem;position:absolute;top:calc(100% + .35rem);left:0;min-width:11rem;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:0 16px 40px -16px rgba(30,41,59,.35);z-index:11}
.gal-toggle[aria-expanded="true"]+.gal-list{display:flex}
.gal-list a{display:block}
@media (min-width:72rem){
 .bar-nav>ul{justify-content:space-between;flex-wrap:nowrap}
 .gal-toggle{display:none}
 .gal-group,.gal-list{display:contents}
 .gal-list li{display:block}
}
main>.page-banner{margin-top:0}
html{scroll-padding-top:4.5rem}

/* v13: hamburger for the menu bar on narrow screens */
.bar-toggle{display:none}
@media (max-width:47.99rem){
 .bar-nav{display:flex;justify-content:flex-end;align-items:center;min-height:3.4rem}
 .bar-toggle{display:inline-grid;place-items:center}
 .bar-nav>ul{display:none;position:absolute;top:calc(100% + .35rem);left:.75rem;right:.75rem;flex-direction:column;align-items:stretch;flex-wrap:nowrap;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:0 16px 40px -16px rgba(30,41,59,.35);padding:.5rem;max-height:calc(100dvh - 5rem);overflow:auto}
 .bar-nav.open>ul{display:flex}
 .bar-nav a,.bar-nav .gal-toggle{display:block;width:100%;text-align:left;font-size:1rem;padding:.75rem 1rem;border-radius:var(--r-sm)}
 .gal-list{position:static;box-shadow:none;border:0;padding:0 0 0 1rem;min-width:0}
}

/* v14: flat gallery rows inside the hamburger panel */
@media (max-width:47.99rem){
 .bar-nav .gal-toggle{display:none}
 .bar-nav .gal-group,.bar-nav .gal-list{display:contents}
 .bar-nav .gal-list li{display:block}
}

/* v15: Playfair Display is the default H1 font site-wide */
h1,.page-title{font-family:"Playfair Display",Georgia,serif;font-weight:600;letter-spacing:0}
.home-hero h1,.hero h1{font-weight:600;letter-spacing:0}