/* css/layout.css */

/* === Conteneur === */
.presentation-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
}

/* === Slide de base === */
.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    z-index: 1;
    transition: none;
    overflow: hidden;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 10;
}

/* === Layout Split-Screen (image + texte côte à côte plein écran) === */
.slide-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.slide-split .split-image {
    position: relative;
    overflow: hidden;
}

.slide-split .split-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 8s linear;
}

/* Zoom lent automatique sur l'image quand le slide est actif */
.slide-split.active .split-image img {
    transform: scale(1.06);
}

.slide-split .split-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    gap: var(--spacing-md);
}

/* === Layout Hero (image plein écran + texte en overlay) === */
.slide-hero {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.slide-hero .hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.slide-hero .hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 10s linear;
}

/* Zoom cinématique lent */
.slide-hero.active .hero-bg img {
    transform: scale(1.08);
}

/* Overlay sombre pour lisibilité */
.slide-hero .hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.slide-hero .hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: var(--spacing-lg);
}

/* === Layout Centré (texte seul, fond dégradé plein écran) === */
.slide-centered {
    display: flex;
    justify-content: center;
    align-items: center;
}

.slide-centered .centered-content {
    max-width: 900px;
    padding: var(--spacing-xl);
    text-align: center;
}

/* === Transitions cinématiques (Idée 5) === */
.slide.anim-enter {
    animation: slideIn 0.75s var(--ease-out) forwards;
}

.slide.anim-exit {
    animation: slideOut 0.55s var(--ease-in) forwards;
    z-index: 5;
}

/* Entrée : le nouveau slide émerge d'un léger agrandissement avec blur */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: scale(1.06) translateX(40px);
        filter: blur(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateX(0);
        filter: blur(0);
    }
}

/* Sortie : l'ancien slide rétrécit et disparaît vers la gauche avec blur */
@keyframes slideOut {
    from {
        opacity: 1;
        transform: scale(1) translateX(0);
        filter: blur(0);
    }
    to {
        opacity: 0;
        transform: scale(0.94) translateX(-40px);
        filter: blur(12px);
    }
}

.slide.anim-enter-rev {
    animation: slideInRev 0.75s var(--ease-out) forwards;
}

.slide.anim-exit-rev {
    animation: slideOutRev 0.55s var(--ease-in) forwards;
    z-index: 5;
}

/* Version retour : symétrique */
@keyframes slideInRev {
    from {
        opacity: 0;
        transform: scale(1.06) translateX(-40px);
        filter: blur(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateX(0);
        filter: blur(0);
    }
}

@keyframes slideOutRev {
    from {
        opacity: 1;
        transform: scale(1) translateX(0);
        filter: blur(0);
    }
    to {
        opacity: 0;
        transform: scale(0.94) translateX(40px);
        filter: blur(12px);
    }
}

/* === Barre de progression === */
.progress-bar-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 200;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-hero);
    width: 0%;
    transition: width 0.6s var(--ease-out);
}

/* === Contrôles de navigation === */
.controls {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 200;
    background: var(--surface-glass-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 6px;
    border-radius: 50px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(255, 255, 255, 0.5);
    /* Disparaît après quelques secondes, réapparaît au hover / mouvement */
    opacity: 1;
    transition: opacity 0.4s ease;
}

.controls.faded {
    opacity: 0.15;
}

.controls:hover {
    opacity: 1 !important;
}

.controls button {
    font-size: 15px;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.controls button:hover {
    color: var(--color-white);
    background: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.controls button:active {
    transform: scale(0.9);
}

/* Séparateur avant le bouton plein écran */
.controls .sep {
    width: 1px;
    height: 20px;
    background: rgba(0, 0, 0, 0.1);
    margin: 0 2px;
}

/* === Numéro de slide === */
.slide-counter {
    position: fixed;
    bottom: 28px;
    left: 28px;
    z-index: 200;
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    opacity: 0.5;
    transition: opacity 0.4s ease;
}