/*
  DESTINATIONS POPULAIRES — carrousel premium cinématique.
  Scope strict : #aeroport (voir index.html). Aucune classe .dc-* ni
  .dest-carousel n'est utilisée ailleurs sur le site — zéro risque de
  collision avec .dest-card/.dest-grid/.photo-card historiques (encore
  utilisés par la section Excursions, non touchée ici).

  --dc-slide-w est la largeur réelle (px) d'une carte, calculée et posée
  par js/dest-carousel.js selon la largeur mesurée du viewport ; les
  valeurs ci-dessous ne sont qu'un repli avant l'exécution du script.
*/

.dest-carousel {
  --dc-slide-w: 640px;
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "prev viewport next" ". progress .";
  align-items: center;
  row-gap: var(--space-xl);
  column-gap: var(--space-md);
}

/* ---------- Viewport / piste ---------- */

.dc-viewport {
  grid-area: viewport;
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding-block: var(--space-md);
}
@media (hover: hover) and (pointer: fine) {
  .dc-viewport { cursor: grab; }
  .dc-viewport.is-dragging { cursor: grabbing; }
}

.dc-track {
  display: flex;
  width: max-content;
  touch-action: pan-y;
  user-select: none;
  will-change: transform;
  transition: transform 700ms var(--ease-standard);
}
.dc-track.is-dragging { transition: none; }

.dc-slide {
  flex: 0 0 var(--dc-slide-w);
  width: var(--dc-slide-w);
  padding-inline: var(--space-md);
  box-sizing: border-box;
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms var(--ease-entrance), transform 650ms var(--ease-entrance);
}
.dc-slide.is-active { z-index: 2; }
.dc-carousel-in-view .dc-slide { opacity: 1; transform: translateY(0); }
.dc-slide:nth-child(1) { transition-delay: 0ms; }
.dc-slide:nth-child(2) { transition-delay: 70ms; }
.dc-slide:nth-child(3) { transition-delay: 140ms; }
.dc-slide:nth-child(4) { transition-delay: 210ms; }
.dc-slide:nth-child(5) { transition-delay: 280ms; }
.dc-slide:nth-child(6) { transition-delay: 350ms; }

/* ---------- Carte ---------- */

.dc-card {
  display: block;
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-rest);
  transform: scale(0.84);
  filter: brightness(0.76);
  transition: transform 450ms var(--ease-standard),
              filter 450ms var(--ease-standard),
              box-shadow 400ms var(--ease-standard);
}
.dc-slide.is-active .dc-card {
  transform: scale(1);
  filter: brightness(1);
  box-shadow: var(--shadow-floating);
}
.dc-slide.is-active .dc-card:hover,
.dc-slide.is-active .dc-card:focus-visible {
  transform: scale(1.03);
  filter: brightness(1.08);
  box-shadow: var(--shadow-floating), 0 0 0 2px rgba(200, 169, 106, 0.55);
  outline: none;
}
.dc-slide:not(.is-active) .dc-card:hover,
.dc-slide:not(.is-active) .dc-card:focus-visible {
  filter: brightness(0.9);
  outline: none;
}

/* halo doré discret, uniquement autour de la carte active */
.dc-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  box-shadow: 0 0 0 1px rgba(200, 169, 106, 0.5), 0 0 28px 4px rgba(200, 169, 106, 0.16);
  opacity: 0;
  transition: opacity 500ms var(--ease-standard);
  pointer-events: none;
}
.dc-slide.is-active .dc-card::after { opacity: 1; }

.dc-card-media {
  position: absolute;
  inset: 0;
}
.dc-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  -webkit-user-drag: none;
  transition: filter 900ms var(--ease-standard);
}
.dc-slide.is-active .dc-card-media img { filter: blur(0); }
.dest-carousel:not(.dc-carousel-in-view) .dc-slide.is-active .dc-card-media img {
  filter: blur(6px);
}

/* zoom lent façon Ken Burns, carte active uniquement */
.dc-slide.is-active .dc-card-media img { animation: dc-kenburns 14s ease-in-out infinite alternate; }
@keyframes dc-kenburns {
  0%   { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.08) translate(-1.5%, -1%); }
}

.dc-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 10, 12, 0.04) 0%, rgba(10, 10, 12, 0.14) 42%, rgba(10, 10, 12, 0.74) 100%);
  pointer-events: none;
}

/* reflet diagonal ponctuel façon carrosserie, carte active uniquement */
.dc-reflect {
  position: absolute;
  inset: -20% -60%;
  background: linear-gradient(75deg, transparent 42%, rgba(255, 255, 255, 0.14) 48%, rgba(255, 255, 255, 0.26) 50%, rgba(255, 255, 255, 0.14) 52%, transparent 58%);
  opacity: 0;
  pointer-events: none;
}
.dc-slide.is-active .dc-reflect {
  animation: dc-reflect-sweep 12s ease-in-out infinite;
}
@keyframes dc-reflect-sweep {
  0%, 88%, 100% { opacity: 0; transform: translateX(-55%); }
  92% { opacity: 0.55; }
  96% { opacity: 0; transform: translateX(55%); }
}

.dc-card-info {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: var(--space-lg) var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 550ms var(--ease-entrance) 100ms, transform 550ms var(--ease-entrance) 100ms;
}
.dc-slide.is-active .dc-card-info { opacity: 1; transform: translateY(0); }

.dc-card-tag {
  align-self: flex-start;
  font: 700 0.6875rem/1 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--p-champagne-light);
  background: rgba(200, 169, 106, 0.18);
  border: 1px solid rgba(200, 169, 106, 0.42);
  padding: 5px 10px;
  border-radius: 999px;
}
.dc-card-title {
  font: 600 1.3rem/1.22 var(--font-display);
  color: #fff;
}
.dc-slide.is-active .dc-card:hover .dc-card-title,
.dc-slide.is-active .dc-card:focus-visible .dc-card-title {
  color: var(--p-champagne-light);
}

/* ---------- Trait de lumière doré (transition entre slides) ---------- */

.dc-sweep {
  position: absolute;
  top: 0; bottom: 0;
  left: -18%;
  width: 18%;
  background: linear-gradient(90deg, transparent 0%, rgba(200, 169, 106, 0) 12%, rgba(217, 169, 104, 0.55) 46%, rgba(255, 236, 196, 0.9) 50%, rgba(217, 169, 104, 0.55) 54%, rgba(200, 169, 106, 0) 88%, transparent 100%);
  filter: blur(5px);
  opacity: 0;
  pointer-events: none;
  z-index: 5;
  mix-blend-mode: screen;
}
.dc-sweep.is-sweeping {
  animation: dc-sweep-anim 750ms cubic-bezier(.3, .7, .3, 1);
}
@keyframes dc-sweep-anim {
  0%   { opacity: 0;   transform: translateX(0); }
  12%  { opacity: 0.9; }
  85%  { opacity: 0.55; }
  100% { opacity: 0;   transform: translateX(650%); }
}

/* ---------- Flèches ---------- */

.dc-arrow {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-rest);
  transition: background 250ms var(--ease-standard), color 250ms var(--ease-standard),
              border-color 250ms var(--ease-standard), transform 200ms var(--ease-standard);
}
.dc-arrow-prev { grid-area: prev; }
.dc-arrow-next { grid-area: next; }
.dc-arrow .icon { width: 20px; height: 20px; }
.dc-arrow-prev .icon { transform: scaleX(-1); }
.dc-arrow:hover, .dc-arrow:focus-visible {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  transform: translateY(-1px);
  outline: none;
}
.dc-arrow:active { transform: translateY(0) scale(0.94); }

/* ---------- Indicateurs de progression ---------- */

.dc-progress {
  grid-area: progress;
  justify-self: center;
  display: flex;
  gap: 8px;
}
.dc-dash {
  width: 26px;
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
  border: none;
  padding: 0;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: width 350ms var(--ease-standard), background 250ms var(--ease-standard);
}
.dc-dash.is-active { width: 50px; background: rgba(200, 169, 106, 0.25); }
.dc-dash-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: var(--color-accent);
  border-radius: inherit;
}
.dc-dash.is-active .dc-dash-fill {
  animation: dc-dash-fill-anim 4000ms linear forwards;
}
.dest-carousel.is-paused .dc-dash.is-active .dc-dash-fill { animation-play-state: paused; }
@keyframes dc-dash-fill-anim {
  from { width: 0%; }
  to   { width: 100%; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1279px) {
  .dest-carousel { --dc-slide-w: 560px; }
}
@media (max-width: 1023px) {
  .dest-carousel { --dc-slide-w: 62vw; column-gap: var(--space-sm); }
  .dc-arrow { width: 40px; height: 40px; }
  .dc-arrow .icon { width: 17px; height: 17px; }
  .dc-card { aspect-ratio: 3.4 / 5; }
}
@media (max-width: 767px) {
  .dest-carousel {
    --dc-slide-w: 84vw;
    grid-template-columns: auto 1fr auto;
  }
  .dc-slide { padding-inline: var(--space-sm); }
  .dc-arrow { width: 36px; height: 36px; }
  .dc-card { aspect-ratio: 4 / 5; }
  .dc-card-title { font-size: 1.1rem; }
}
@media (max-width: 479px) {
  .dest-carousel { --dc-slide-w: 90vw; }
}

/* ---------- Accessibilité : mouvement réduit ---------- */

.reduced-motion .dc-card-media img,
.reduced-motion .dc-reflect,
.reduced-motion .dc-sweep.is-sweeping,
.reduced-motion .dc-dash.is-active .dc-dash-fill {
  animation: none !important;
}
@media (prefers-reduced-motion: reduce) {
  .dc-card-media img,
  .dc-reflect,
  .dc-sweep.is-sweeping,
  .dc-dash.is-active .dc-dash-fill {
    animation: none !important;
  }
}