/* Styles pour la page de présentation - Design moderne */

/* Bouton de retour */
.back-button {
    display: inline-flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.back-button:hover {
    color: white;
}

.back-button svg {
    transition: transform 0.3s ease;
}

.back-button:hover svg {
    transform: translateX(-4px);
}

/* Cartes de présentation - Design moderne */
.presentation-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    min-height: 500px;
    display: flex;
    flex-direction: column;
}

/* Effet de brillance au survol */
.presentation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: inherit;
}

.presentation-card:hover {
    transform: translateY(-8px) scale(1.02);
}

.presentation-card:hover::before {
    opacity: 1;
}

/* Icônes avec design moderne */
.presentation-card .w-20.h-20 {
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.3));
    transition: all 0.3s ease;
    position: relative;
}

.presentation-card:hover .w-20.h-20 {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.4));
}

/* Effet de lueur sur les icônes */
.presentation-card .w-20.h-20::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.2), transparent, rgba(255, 255, 255, 0.2));
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.presentation-card:hover .w-20.h-20::before {
    opacity: 1;
}

/* Titres des cartes */
.presentation-card h2 {
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    font-weight: 700;
    letter-spacing: -0.025em;
    transition: all 0.3s ease;
}

.presentation-card:hover h2 {
    transform: translateY(-2px);
}

/* Barres de couleur sous les titres */
.presentation-card .w-16.h-1 {
    transition: all 0.3s ease;
}

.presentation-card:hover .w-16.h-1 {
    transform: scaleX(1.2);
}

/* Contenu des cartes */
.presentation-card h3 {
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.presentation-card:hover h3 {
    transform: translateY(-1px);
}

.presentation-card p {
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.presentation-card:hover p {
    transform: translateY(-1px);
}

/* Boîtes d'information */
.presentation-card .bg-white\/5 {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.presentation-card:hover .bg-white\/5 {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.08);
}

.presentation-card .bg-white\/5::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.presentation-card:hover .bg-white\/5::before {
    left: 100%;
}

/* Titres des boîtes d'information */
.presentation-card h4 {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.presentation-card:hover h4 {
    transform: translateX(4px);
}

/* Section valeurs */
.bg-white\/10 {
    position: relative;
    overflow: hidden;
}

.bg-white\/10::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: inherit;
}

.bg-white\/10:hover::before {
    opacity: 1;
}

/* Icônes des valeurs */
.bg-white\/10 .w-12.h-12 {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: all 0.3s ease;
}

.bg-white\/10:hover .w-12.h-12 {
    transform: scale(1.1);
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.4));
}

/* Call to action */
.bg-gradient-to-r.from-purple-600\/20 {
    position: relative;
    overflow: hidden;
}

.bg-gradient-to-r.from-purple-600\/20::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
    pointer-events: none;
    border-radius: inherit;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Boutons CTA */
.bg-gradient-to-r.from-purple-500,
.bg-gradient-to-r.from-green-500 {
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.bg-gradient-to-r.from-purple-500:hover,
.bg-gradient-to-r.from-green-500:hover {
    box-shadow: 
        0 12px 35px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.bg-gradient-to-r.from-purple-500::before,
.bg-gradient-to-r.from-green-500::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.bg-gradient-to-r.from-purple-500:hover::before,
.bg-gradient-to-r.from-green-500:hover::before {
    left: 100%;
}

/* Animations d'entrée */
.presentation-card {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Délai d'animation pour chaque carte */
.presentation-card:nth-child(1) { 
    animation-delay: 0.1s; 
}

.presentation-card:nth-child(2) { 
    animation-delay: 0.2s; 
}

.presentation-card:nth-child(3) { 
    animation-delay: 0.3s; 
}

/* Animation pour la section valeurs */
.bg-white\/10 {
    animation: fadeInUp 0.8s ease-out;
    animation-delay: 0.4s;
    animation-fill-mode: both;
}

/* Animation pour le CTA */
.bg-gradient-to-r.from-purple-600\/20 {
    animation: fadeInUp 1s ease-out;
    animation-delay: 0.6s;
    animation-fill-mode: both;
}

/* Responsive */
@media (max-width: 768px) {
    .presentation-card {
        min-height: 450px;
        padding: 1.5rem;
    }
    
    .presentation-card h2 {
        font-size: 1.5rem;
    }
    
    .presentation-card h3 {
        font-size: 1rem;
    }
    
    .presentation-card p {
        font-size: 0.9rem;
    }
    
    .presentation-card .w-20.h-20 {
        width: 4rem;
        height: 4rem;
    }
    
    .presentation-card .w-20.h-20 svg {
        width: 2rem;
        height: 2rem;
    }
}

@media (max-width: 640px) {
    .presentation-card {
        min-height: 400px;
        padding: 1rem;
    }
    
    .presentation-card h2 {
        font-size: 1.25rem;
    }
    
    .presentation-card h3 {
        font-size: 0.9rem;
    }
    
    .presentation-card p {
        font-size: 0.85rem;
    }
    
    .bg-white\/10 {
        padding: 1.5rem;
    }
    
    .bg-gradient-to-r.from-purple-600\/20 {
        padding: 1.5rem;
    }
}

/* Amélioration de la lisibilité */
.presentation-card h2, 
.presentation-card h3,
.presentation-card h4,
.presentation-card p,
.bg-white\/10 h2,
.bg-white\/10 h3,
.bg-white\/10 p {
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}

/* Effet de particules subtil */
.presentation-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: inherit;
}

.presentation-card:hover::after {
    opacity: 1;
}