/* Beyond the Sky — Collections v71 */
:root{--collection-bg:#0b0d0e;--collection-fg:#eef0ed;--collection-muted:#969b99;--collection-line:rgba(255,255,255,.14);--collection-pad:clamp(1.4rem,4vw,4.5rem)}
*{box-sizing:border-box}
html{background:var(--collection-bg)}
body.collection-page{margin:0;min-height:100vh;background:var(--collection-bg);color:var(--collection-fg);font-family:Inter,system-ui,sans-serif;transition:background 1.1s cubic-bezier(.22,.61,.36,1),color .8s ease;overflow-x:hidden}
body.collection-page.is-daylight{--collection-bg:#f0eee8;--collection-fg:#202421;--collection-muted:#6c716d;--collection-line:rgba(22,26,23,.15)}
body.collection-page a{color:inherit;text-decoration:none}
.collection-grain{position:fixed;inset:0;z-index:3;pointer-events:none;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E")}
.collection-header{position:fixed;z-index:88;left:0;right:0;top:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:1.65rem var(--collection-pad);font-size:.62rem;letter-spacing:.18em;text-transform:uppercase;mix-blend-mode:normal;transition:color .7s ease,background .4s ease,border-color .4s ease}
.collection-header.is-scrolled{background:color-mix(in srgb,var(--collection-bg) 82%,transparent);backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);border-bottom:1px solid var(--collection-line)}
.collection-header .collection-brand{font-weight:600;justify-self:start}
.collection-header .collection-mark{justify-self:center;color:var(--collection-muted)}
.collection-header .collection-return{justify-self:end;display:inline-flex;gap:.7rem;align-items:center;color:var(--collection-muted);transition:color .2s}
.collection-header .collection-return:hover{color:var(--collection-fg)}
.collection-index-hero{min-height:84vh;padding:clamp(10rem,17vh,15rem) var(--collection-pad) 7rem;display:grid;align-content:end;align-items:end;grid-template-columns:minmax(0,1.32fr) minmax(19rem,.58fr);gap:clamp(2.5rem,7vw,9rem);border-bottom:1px solid var(--collection-line)}
.collection-index-hero > div{max-width:min(100%,68rem)}
.collection-index-hero .eyebrow,.sky-intro .eyebrow{margin:0 0 1.5rem;color:var(--collection-muted);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase}
.collection-index-hero h1,.sky-intro h1{margin:0;font-family:Manrope,Inter,sans-serif;font-weight:300;letter-spacing:-.06em;line-height:.86;font-size:clamp(4.7rem,10.4vw,11.2rem)}
.collection-index-hero .intro{align-self:end;justify-self:end;max-width:28rem;margin:0 0 .35rem 0;color:var(--collection-muted);font-size:clamp(1rem,1.45vw,1.2rem);line-height:1.65}
.collections-list{padding:clamp(6rem,10vw,11rem) var(--collection-pad) 10rem}
.collection-card{display:grid;grid-template-columns:minmax(15rem,.72fr) minmax(0,1.28fr);gap:clamp(2rem,6vw,7rem);align-items:center;max-width:100rem;margin:0 auto;padding:0 0 8rem}
.collection-card-meta{align-self:end;padding-bottom:1rem}
.collection-card-meta .number{margin:0 0 5rem;color:var(--collection-muted);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase}
.collection-card-meta .type{margin:0 0 1rem;color:var(--collection-muted);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase}
.collection-card-meta h2{margin:0;font-family:Manrope,Inter,sans-serif;font-weight:300;font-size:clamp(3.5rem,7vw,8rem);letter-spacing:-.055em;line-height:.9}
.collection-card-meta .meta{margin:1.4rem 0 0;color:var(--collection-muted);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;line-height:1.8}
.collection-card-visual{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#cfd7dc}
.collection-card-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity 1s cubic-bezier(.22,.61,.36,1),transform 1.4s cubic-bezier(.22,.61,.36,1)}
.collection-card-visual img:last-child{opacity:0}
.collection-card:hover .collection-card-visual img:first-child{opacity:0;transform:scale(1.015)}
.collection-card:hover .collection-card-visual img:last-child{opacity:1;transform:scale(1.015)}
.collection-card-arrow{position:absolute;right:1.4rem;bottom:1.2rem;display:flex;align-items:center;justify-content:center;width:2.7rem;height:2.7rem;border-radius:50%;background:rgba(5,8,10,.42);color:#fff;border:1px solid rgba(255,255,255,.24);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.collection-card-arrow svg{display:block;width:.95rem;height:.95rem;overflow:visible;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;fill:none;transform:translate(.03rem,-.03rem)}
.collection-footer{display:flex;justify-content:space-between;gap:2rem;padding:2.5rem var(--collection-pad);border-top:1px solid var(--collection-line);color:var(--collection-muted);font-size:.6rem;letter-spacing:.17em;text-transform:uppercase}

/* Sky collection: a photobook whose page colour follows the photographs. */
body.sky-collection{--collection-bg:#edf2f5;--collection-fg:#1b2024;--collection-muted:#737d83;--collection-line:rgba(18,24,28,.14);background:var(--collection-bg)}
.sky-intro{min-height:100vh;padding:clamp(11rem,18vh,15rem) var(--collection-pad) 8rem;display:flex;flex-direction:column;justify-content:flex-end;border-bottom:1px solid var(--collection-line)}
.sky-intro .intro-row{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(20rem,.75fr);gap:6vw;align-items:end}
.sky-intro .sky-description{max-width:32rem;margin:0 0 .8rem auto;color:var(--collection-muted);font-size:clamp(1rem,1.45vw,1.22rem);line-height:1.7}
.sky-intro .sky-meta{margin:2rem 0 0;color:var(--collection-muted);font-size:.6rem;letter-spacing:.18em;text-transform:uppercase}
.sky-sequence{position:relative}
.sky-frame{--frame-max:82rem;min-height:100vh;padding:clamp(6rem,10vh,9rem) var(--collection-pad);display:flex;flex-direction:column;justify-content:center;align-items:center;position:relative}
.sky-frame.is-wide{--frame-max:96rem}
.sky-frame.is-intimate{--frame-max:68rem}
.sky-frame.is-full{padding-left:0;padding-right:0}
.sky-frame figure{width:min(100%,var(--frame-max));margin:0;position:relative}
.sky-frame.is-full figure{width:100%;max-width:none}
.sky-frame img{display:block;width:100%;height:auto;max-height:82vh;object-fit:contain;background:transparent;cursor:zoom-in}
.sky-frame.is-full img{width:100%;height:min(82vh,58vw);max-height:none;object-fit:cover}
.sky-frame figcaption{display:flex;justify-content:space-between;gap:2rem;margin-top:1rem;color:var(--collection-muted);font-size:.56rem;letter-spacing:.16em;text-transform:uppercase}
.sky-frame.is-full figcaption{padding:0 var(--collection-pad)}
.sky-frame .frame-note{opacity:.68}
.sky-ending{min-height:72vh;padding:8rem var(--collection-pad);display:grid;place-items:center;text-align:center}
.sky-ending p{margin:0 0 1rem;color:var(--collection-muted);font-size:.6rem;letter-spacing:.2em;text-transform:uppercase}
.sky-ending a{font-family:Manrope,Inter,sans-serif;font-weight:300;font-size:clamp(2.4rem,5vw,6rem);letter-spacing:-.045em}
.sky-lightbox{position:fixed;inset:0;z-index:130;background:rgba(5,7,8,.94);display:grid;place-items:center;padding:3vw;opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s}
.sky-lightbox.is-open{opacity:1;visibility:visible}
.sky-lightbox img{display:block;max-width:94vw;max-height:92vh;object-fit:contain}
.sky-lightbox button{position:absolute;right:1.4rem;top:1.2rem;border:1px solid rgba(255,255,255,.2);background:rgba(0,0,0,.25);color:#fff;width:2.6rem;height:2.6rem;border-radius:50%;font-size:1.1rem;cursor:pointer}

/* Collection pages inherit the site's atmosphere controls. */
body.collection-page .ambient-controls{z-index:110}
body.collection-page .rain-atmosphere{z-index:102}
body.collection-page .lightning-atmosphere{z-index:106}
body.collection-page .ambient-controls .sound-toggle,
body.collection-page .ambient-controls .rain-toggle,
body.collection-page .ambient-controls .lightning-toggle{box-shadow:0 .35rem 1.7rem rgba(0,0,0,.10)}

@media(max-width:760px){
 .collection-header{grid-template-columns:1fr auto;padding:1.25rem var(--collection-pad)}
 .collection-header .collection-mark{display:none}
 .collection-index-hero{min-height:78vh;grid-template-columns:1fr;gap:3rem;padding-top:9rem}
 .collection-index-hero .intro{margin:0;max-width:24rem;justify-self:start}
 .collection-card{grid-template-columns:1fr;gap:2rem;padding-bottom:5rem}
 .collection-card-meta .number{margin-bottom:2rem}
 .collection-card-visual{order:-1}
 .sky-intro{padding-top:9rem}
 .sky-intro .intro-row{grid-template-columns:1fr;gap:2.5rem}
 .sky-intro .sky-description{margin:0;max-width:27rem}
 .sky-frame{min-height:auto;padding-top:5rem;padding-bottom:5rem}
 .sky-frame img{max-height:none}
 .sky-frame.is-full img{height:72vw}
 .collection-footer{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){body.collection-page,.collection-header,.collection-card-visual img,.sky-lightbox{transition:none!important}}