/* Fonds fixes avec fondus entre les chapitres, y compris sur mobile. */
.cinema-backdrop{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;background:#e6d5ec}.cinema-layer{position:absolute;inset:-2%;background-size:cover;background-position:center;opacity:0;transform:scale(1.035);transition:opacity 1.3s ease,transform 6s ease;will-change:opacity}.cinema-layer.active{opacity:1;transform:scale(1)}body.cinema{background:transparent;isolation:isolate}body.cinema .scene{background-image:none}body.cinema .scene:before{background:#fffaf633}body.cinema .light:before{background:#fffaf399}body.cinema .gallery-scene:before{background:#f8f0fb77}body.cinema footer:before{background:#321741a8}.cinema .hero-frame{backdrop-filter:blur(2px)}.cinema .scene{min-height:90svh;display:grid;align-content:center}.cinema .hero{min-height:100svh}.cinema .content{width:100%}.cinema .gift-panel,.cinema .rsvp-panel{width:calc(100% - 40px);backdrop-filter:blur(10px)}.cinema .reveal{transform:translateY(45px);transition:opacity 1.3s ease,transform 1.3s cubic-bezier(.16,1,.3,1)}.cinema .reveal.visible{transform:none}.cinema .reveal>*{opacity:0;transform:translateY(22px);transition:opacity 1s ease,transform 1.1s cubic-bezier(.16,1,.3,1);transition-delay:var(--reveal-delay,0ms)}.cinema .reveal.visible>*{opacity:1;transform:none}.cinema .gallery figure,.cinema .arched-photo{overflow:hidden}.cinema .gallery figure{border-radius:5px}.cinema .gallery figure:nth-child(2){border-radius:200px 200px 5px 5px}.cinema .gallery img{transform:translateY(var(--photo-shift,0px)) scale(1.06);transition:filter .8s;will-change:transform}.cinema .gallery img:hover{filter:brightness(1.05)}.cinema .arched-photo img{transform:scale(1.025)}.cinema .outline-button,.cinema .gold-button,.cinema .purple-button{transition:background .25s,box-shadow .25s,transform .25s}.cinema .outline-button:hover{background:#f0e1f4;box-shadow:0 8px 24px #54346618;transform:translateY(-2px)}.cinema .purple-button:hover,.cinema .gold-button:hover{box-shadow:0 10px 30px #54346630;transform:translateY(-2px)}.cinema .timeline article{transition:transform 1s,opacity 1s}.cinema .scroll-hint span{animation:scrollBreath 2.8s ease-in-out infinite}@keyframes scrollBreath{0%,100%{transform:translateY(0);opacity:.6}50%{transform:translateY(6px);opacity:1}}@media(max-width:700px){.cinema .scene{min-height:85svh}.cinema .hero{min-height:100svh}.cinema .gallery img{transform:scale(1.04)}.cinema .reveal{transform:translateY(28px)}.cinema .gift-panel,.cinema .rsvp-panel{width:calc(100% - 40px)}}@media(prefers-reduced-motion:reduce){.cinema-layer,.cinema .reveal,.cinema .reveal>*{transition:none;transform:none!important}.cinema .reveal,.cinema .reveal>*{opacity:1}.cinema .gallery img{transform:none;will-change:auto}.cinema .scroll-hint span{animation:none}}