/* STN Projects - Frontend Styles - Charte STN */

:root {
    --stn-primary: #1E5A96;
    --stn-secondary: #4A8BC2;
    --stn-dark: #1A3A52;
    --stn-light: #EBF4FB;
}

.stnprojects-gallery-wrapper {
    width: 100%;
    padding: 40px 20px;
    font-family: 'Roboto', 'Segoe UI', sans-serif;
}

/* Filtres */
.stnprojects-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
    padding: 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(30, 90, 150, 0.1);
}

.stnprojects-filter-btn {
    padding: 12px 28px;
    background: white;
    color: var(--stn-primary);
    border: 2px solid var(--stn-primary);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stnprojects-filter-btn:hover {
    background: var(--stn-light);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(30, 90, 150, 0.2);
}

.stnprojects-filter-btn.active {
    background: linear-gradient(135deg, var(--stn-primary), var(--stn-secondary));
    color: white;
    border-color: var(--stn-primary);
    box-shadow: 0 5px 20px rgba(30, 90, 150, 0.3);
}

/* Grille d'images */
.stnprojects-grid {
    display: grid;
    gap: 25px;
    margin-bottom: 40px;
}

.stnprojects-grid[data-columns="2"] {
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
}

.stnprojects-grid[data-columns="3"] {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.stnprojects-grid[data-columns="4"] {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.stnprojects-grid[data-columns="5"] {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* Carte d'image */
.stnprojects-grid-item {
    opacity: 1;
    transform: scale(1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stnprojects-grid-item.hidden {
    opacity: 0;
    transform: scale(0.8);
    height: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.stnprojects-image-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(30, 90, 150, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    background: white;
}

.stnprojects-image-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--stn-primary), var(--stn-secondary));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.stnprojects-image-card:hover::before {
    opacity: 0.1;
}

.stnprojects-image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 90, 150, 0.25);
}

.stnprojects-image-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.stnprojects-image-card:hover img {
    transform: scale(1.05);
}

/* Overlay */
.stnprojects-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(26, 58, 82, 0.95), transparent);
    padding: 25px 20px;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.stnprojects-image-card:hover .stnprojects-image-overlay {
    transform: translateY(0);
}

.stnprojects-image-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
}

.stnprojects-image-info h3 {
    margin: 0;
    color: white;
    font-size: 16px;
    font-weight: 600;
    flex: 1;
}

.stnprojects-zoom-btn {
    width: 45px;
    height: 45px;
    background: white;
    color: var(--stn-primary);
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stnprojects-zoom-btn:hover {
    background: var(--stn-primary);
    color: white;
    transform: scale(1.1) rotate(15deg);
}

/* Message vide */
.stnprojects-empty,
.stnprojects-no-results {
    text-align: center;
    padding: 80px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(30, 90, 150, 0.1);
}

.stnprojects-no-results-icon {
    font-size: 80px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.stnprojects-no-results p {
    color: #666;
    font-size: 18px;
    margin: 0;
}

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

.stnprojects-grid-item {
    animation: fadeInUp 0.6s ease-out;
}

.stnprojects-grid-item:nth-child(1) { animation-delay: 0.05s; }
.stnprojects-grid-item:nth-child(2) { animation-delay: 0.1s; }
.stnprojects-grid-item:nth-child(3) { animation-delay: 0.15s; }
.stnprojects-grid-item:nth-child(4) { animation-delay: 0.2s; }
.stnprojects-grid-item:nth-child(5) { animation-delay: 0.25s; }
.stnprojects-grid-item:nth-child(6) { animation-delay: 0.3s; }

/* Responsive */
@media (max-width: 1024px) {
    .stnprojects-grid[data-columns="4"],
    .stnprojects-grid[data-columns="5"] {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .stnprojects-gallery-wrapper {
        padding: 30px 15px;
    }
    
    .stnprojects-filters {
        gap: 8px;
        padding: 15px;
    }
    
    .stnprojects-filter-btn {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    .stnprojects-grid {
        gap: 20px;
    }
    
    .stnprojects-grid[data-columns="2"],
    .stnprojects-grid[data-columns="3"],
    .stnprojects-grid[data-columns="4"],
    .stnprojects-grid[data-columns="5"] {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .stnprojects-image-card img {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .stnprojects-grid[data-columns="2"],
    .stnprojects-grid[data-columns="3"],
    .stnprojects-grid[data-columns="4"],
    .stnprojects-grid[data-columns="5"] {
        grid-template-columns: 1fr;
    }
    
    .stnprojects-image-card img {
        height: 220px;
    }
    
    .stnprojects-image-info h3 {
        font-size: 14px;
    }
    
    .stnprojects-zoom-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
}