/* SignalNids Rando — optimisation des images, sans modification du thème. */
/* Les images Unsplash existantes utilisent l’optimisation CDN auto=format : largeur et compression adaptées. */
/* Le fallback WebP local conserve une photo visible en cas d’indisponibilité du fournisseur. */
.sn-interior-hero,.sn-community-hero,.sn-unified-hero,
.snr250-hero,.snr260-hero,.snr270-hero,.snrp-hero{
 background-image:linear-gradient(98deg,rgba(7,45,32,.88) 0%,rgba(11,49,37,.69) 48%,rgba(7,33,27,.28) 100%),var(--sn280-photo),url('/assets/img/banner-fallback.webp');
}
@media (min-width:761px) {
.sn-browse .sn-interior-hero{--sn280-photo:url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=1600&q=73')}
.sn-community .sn-community-hero{--sn280-photo:url('https://images.unsplash.com/photo-1551632811-561732d1e306?auto=format&fit=crop&w=1600&q=73')}
.sn-alerts-page .sn-interior-hero{--sn280-photo:url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1600&q=73')}
.sn-safety-hero{--sn280-photo:url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?auto=format&fit=crop&w=1600&q=73')}
.sn-hero-map{--sn280-photo:url('https://images.unsplash.com/photo-1448375240586-882707db888b?auto=format&fit=crop&w=1600&q=73')}
.sn-hero-create{--sn280-photo:url('https://images.unsplash.com/photo-1454496522488-7a8e488e8606?auto=format&fit=crop&w=1600&q=73')}
.sn-nearby-v230 .snr230-hero{--sn280-photo:url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?auto=format&fit=crop&w=1600&q=73')}
.snr250-page .snr250-hero{--sn280-photo:url('https://images.unsplash.com/photo-1495584816685-4bdbf1b5057e?auto=format&fit=crop&w=1600&q=73')}
.snr260-page .snr260-hero{--sn280-photo:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=1600&q=73')}
.snr270-page .snr270-hero{--sn280-photo:url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=1600&q=73')}
.sn-hero-carnet{--sn280-photo:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=1600&q=73')}
.sn-hero-favoris{--sn280-photo:url('https://images.unsplash.com/photo-1470770841072-f978cf4d019e?auto=format&fit=crop&w=1600&q=73')}
.sn-hero-mes-parcours{--sn280-photo:url('https://images.unsplash.com/photo-1495584816685-4bdbf1b5057e?auto=format&fit=crop&w=1600&q=73')}
body.snrp-hub .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=1600&q=73')}
body.snrp-weather .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1600&q=73')}
body.snrp-journal .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=1600&q=73')}
body.snrp-group .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1551632811-561732d1e306?auto=format&fit=crop&w=1600&q=73')}
.snr290-community .sn-community-hero{--sn280-photo:url('https://images.unsplash.com/photo-1551632811-561732d1e306?auto=format&fit=crop&w=1600&q=73')}
.snr290-profile .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=1600&q=73')}
.snr290-discussion .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1500534623283-312aade485b7?auto=format&fit=crop&w=1600&q=73')}
.snr290-moderation .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?auto=format&fit=crop&w=1600&q=73')}
.snr290-directory .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=1600&q=73')}
.snr300-preparer .snr300-hero{--sn280-photo:url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=1600&q=73')}
.snr300-pour-moi .snr300-hero{--sn280-photo:url('https://images.unsplash.com/photo-1470770841072-f978cf4d019e?auto=format&fit=crop&w=1600&q=73')}
.snr300-defis .snr300-hero{--sn280-photo:url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=1600&q=73')}

/* Accueil : image principale dimensionnée pour un bureau, avec couleur/fallback conservés. */
.hero-bg{background-image:linear-gradient(90deg,rgba(13,39,26,.98) 0%,rgba(16,53,37,.90) 39%,rgba(18,61,46,.60) 72%,rgba(12,43,31,.50) 100%),url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=1650&q=73'),url('/assets/img/hero-fallback.webp')}
.destination-forest:before{background-image:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=760&q=73'),url('/assets/img/route-valley.webp')}
.destination-mountain:before{background-image:url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=760&q=73'),url('/assets/img/route-summit.webp')}
.destination-coast:before{background-image:url('https://images.unsplash.com/photo-1473116763249-2faaef81ccda?auto=format&fit=crop&w=760&q=73'),url('/assets/img/route-lake.webp')}
.safety-banner-bg{background-image:linear-gradient(90deg,#123a29 0%,rgba(18,58,41,.98) 44%,rgba(18,58,41,.6) 100%),url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=1300&q=73'),url('/assets/img/hero-fallback.webp')}
.snr190-hero{background-image:linear-gradient(92deg,rgba(6,43,29,.98) 0%,rgba(7,61,41,.96) 42%,rgba(11,65,45,.77) 76%,rgba(11,46,35,.62) 100%),url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=1300&q=73')}
}
@media (max-width:760px) {
.sn-browse .sn-interior-hero{--sn280-photo:url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=850&q=69')}
.sn-community .sn-community-hero{--sn280-photo:url('https://images.unsplash.com/photo-1551632811-561732d1e306?auto=format&fit=crop&w=850&q=69')}
.sn-alerts-page .sn-interior-hero{--sn280-photo:url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=850&q=69')}
.sn-safety-hero{--sn280-photo:url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?auto=format&fit=crop&w=850&q=69')}
.sn-hero-map{--sn280-photo:url('https://images.unsplash.com/photo-1448375240586-882707db888b?auto=format&fit=crop&w=850&q=69')}
.sn-hero-create{--sn280-photo:url('https://images.unsplash.com/photo-1454496522488-7a8e488e8606?auto=format&fit=crop&w=850&q=69')}
.sn-nearby-v230 .snr230-hero{--sn280-photo:url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?auto=format&fit=crop&w=850&q=69')}
.snr250-page .snr250-hero{--sn280-photo:url('https://images.unsplash.com/photo-1495584816685-4bdbf1b5057e?auto=format&fit=crop&w=850&q=69')}
.snr260-page .snr260-hero{--sn280-photo:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=850&q=69')}
.snr270-page .snr270-hero{--sn280-photo:url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=850&q=69')}
.sn-hero-carnet{--sn280-photo:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=850&q=69')}
.sn-hero-favoris{--sn280-photo:url('https://images.unsplash.com/photo-1470770841072-f978cf4d019e?auto=format&fit=crop&w=850&q=69')}
.sn-hero-mes-parcours{--sn280-photo:url('https://images.unsplash.com/photo-1495584816685-4bdbf1b5057e?auto=format&fit=crop&w=850&q=69')}
body.snrp-hub .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=850&q=69')}
body.snrp-weather .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=850&q=69')}
body.snrp-journal .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=850&q=69')}
body.snrp-group .snrp-hero{--sn280-photo:url('https://images.unsplash.com/photo-1551632811-561732d1e306?auto=format&fit=crop&w=850&q=69')}
.snr290-community .sn-community-hero{--sn280-photo:url('https://images.unsplash.com/photo-1551632811-561732d1e306?auto=format&fit=crop&w=850&q=69')}
.snr290-profile .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=850&q=69')}
.snr290-discussion .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1500534623283-312aade485b7?auto=format&fit=crop&w=850&q=69')}
.snr290-moderation .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1473448912268-2022ce9509d8?auto=format&fit=crop&w=850&q=69')}
.snr290-directory .snr290-hero{--sn280-photo:url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=850&q=69')}
.snr300-preparer .snr300-hero{--sn280-photo:url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=850&q=69')}
.snr300-pour-moi .snr300-hero{--sn280-photo:url('https://images.unsplash.com/photo-1470770841072-f978cf4d019e?auto=format&fit=crop&w=850&q=69')}
.snr300-defis .snr300-hero{--sn280-photo:url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=850&q=69')}

.hero-bg{background-image:linear-gradient(90deg,rgba(13,39,26,.98) 0%,rgba(16,53,37,.90) 39%,rgba(18,61,46,.60) 72%,rgba(12,43,31,.50) 100%),url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=850&q=69'),url('/assets/img/hero-fallback.webp')}
.destination-forest:before{background-image:url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=650&q=69'),url('/assets/img/route-valley.webp')}
.destination-mountain:before{background-image:url('https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=650&q=69'),url('/assets/img/route-summit.webp')}
.destination-coast:before{background-image:url('https://images.unsplash.com/photo-1473116763249-2faaef81ccda?auto=format&fit=crop&w=650&q=69'),url('/assets/img/route-lake.webp')}
.safety-banner-bg{background-image:linear-gradient(90deg,#123a29 0%,rgba(18,58,41,.98) 44%,rgba(18,58,41,.6) 100%),url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=850&q=69'),url('/assets/img/hero-fallback.webp')}
.snr190-hero{background-image:linear-gradient(92deg,rgba(6,43,29,.98) 0%,rgba(7,61,41,.96) 42%,rgba(11,65,45,.77) 76%,rgba(11,46,35,.62) 100%),url('https://images.unsplash.com/photo-1472396961693-142e6e269027?auto=format&fit=crop&w=850&q=69')}
}
/* Vignettes des parcours : WebP en priorité si la variante locale a été générée. */
.trail-cover>img{display:block;object-fit:cover;width:100%;height:100%}