/* ==========================================================================
   Section 2: Galerie Masonry 3D - Grille Horizontale
   ========================================================================== */

.masonry-gallery {
    position: relative;
    padding: 2rem 0;
}

.masonry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Responsive: 3 colonnes sur grand écran, 2 sur tablette, 1 sur mobile */
@media (min-width: 1200px) {
    .masonry-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 480px) and (max-width: 767px) {
    .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 479px) {
    .masonry-grid {
        grid-template-columns: 1fr;
    }
}

.masonry-item {
    position: relative;
    perspective: 1000px;
    animation: masonrySlideIn 0.8s ease-out forwards;
    animation-delay: calc(var(--i, 0) * 0.1s);
    opacity: 1;
    transform: translateY(50px);
    height: 280px; /* Hauteur réduite pour format rectangulaire */
}

.masonry-item:nth-child(1) {
    --i: 0;
}
.masonry-item:nth-child(2) {
    --i: 1;
}
.masonry-item:nth-child(3) {
    --i: 2;
}
.masonry-item:nth-child(4) {
    --i: 3;
}
.masonry-item:nth-child(5) {
    --i: 4;
}
.masonry-item:nth-child(6) {
    --i: 5;
}
.masonry-item:nth-child(7) {
    --i: 6;
}

@keyframes masonrySlideIn {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.masonry-card {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transform-origin: center center;
    transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

.masonry-card:hover {
    transform: rotateY(180deg);
}

.masonry-front,
.masonry-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px var(--shadow-dark);
    transform-origin: center center;
}

.masonry-front {
    transform: rotateY(0deg);
    z-index: 2;
}

.masonry-back {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.masonry-front img {
    width: 100%;
    height: 70%; /* 70% pour l'image, 30% pour les infos */
    object-fit: cover;
    transition: var(--transition-smooth);
}

.masonry-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: 2rem 1.5rem 1.5rem;
    height: 30%; /* Hauteur fixe pour les infos */
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.masonry-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    line-height: 1.2;
}

.masonry-info p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}

.masonry-details {
    padding: 2rem;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
}

.masonry-details h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
    font-weight: 600;
}

.masonry-details p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.4;
}

.masonry-details ul {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
    text-align: left;
}

.masonry-details li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.95rem;
}

.masonry-details li:last-child {
    border-bottom: none;
}

.masonry-details li::before {
    content: "✓";
    color: var(--accent-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

.masonry-details .btn {
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    background: var(--accent-color);
    color: var(--text-dark);
}

.masonry-details .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

/* Effet hover sur l'image frontale */
.masonry-card:hover .masonry-front img {
    transform: scale(1.1);
}

/* Variables CSS pour les couleurs et transitions */
:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #fbbf24;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.2);
    --shadow-dark: rgba(0, 0, 0, 0.3);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive amélioré pour petits écrans */
@media (max-width: 768px) {
    .masonry-grid {
        gap: 1.5rem;
        padding: 0 0.5rem;
    }

    .masonry-item {
        height: 260px;
    }

    .masonry-details {
        padding: 1.5rem;
    }

    .masonry-details h3 {
        font-size: 1.4rem;
    }

    .masonry-details p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .masonry-grid {
        gap: 1rem;
    }

    .masonry-item {
        height: 240px;
    }

    .masonry-info {
        padding: 1.5rem 1rem 1rem;
    }

    .masonry-info h3 {
        font-size: 1.1rem;
    }

    .masonry-details {
        padding: 1rem;
    }

    .masonry-details h3 {
        font-size: 1.2rem;
    }
}