/* Responsive Gallery Portfolio - Main Stylesheet */

:root {
    --rgp-primary-color: #6366f1;
    --rgp-secondary-color: #f1f5f9;
    --rgp-text-dark: #1e293b;
    --rgp-text-light: #64748b;
    --rgp-border-color: #e2e8f0;
    --rgp-overlay-bg: rgba(0, 0, 0, 0.6);
    --rgp-transition-speed: 0.3s;
    --rgp-spacing-sm: 0.5rem;
    --rgp-spacing-md: 1rem;
    --rgp-spacing-lg: 1.5rem;
}

* {
    box-sizing: border-box;
}

.rgp-gallery-wrapper {
    width: 100%;
    max-width: 100%;
    padding: var(--rgp-spacing-lg) 0;
}

/* ========== FILTRES / TAGS ========== */
.rgp-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--rgp-spacing-md);
    margin-bottom: var(--rgp-spacing-lg);
    padding: 0 var(--rgp-spacing-md);
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rgp-filter-btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background: var(--rgp-secondary-color);
    color: var(--rgp-text-dark);
    border: 2px solid transparent;
    border-radius: 2rem;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--rgp-transition-speed) ease;
    text-decoration: none;
    white-space: nowrap;
}

.rgp-filter-btn:hover {
    border-color: var(--rgp-primary-color);
    color: var(--rgp-primary-color);
    background: white;
    transform: translateY(-2px);
}

.rgp-filter-btn.active {
    background: var(--rgp-primary-color);
    color: white;
    border-color: var(--rgp-primary-color);
}

/* ========== GALERIE GRID ========== */
.rgp-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--rgp-spacing-md);
    padding: 0 var(--rgp-spacing-md);
    animation: fadeIn 0.5s ease-out;
}

.rgp-gallery-item {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all var(--rgp-transition-speed) ease;
    cursor: pointer;
}

.rgp-gallery-item:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

/* ========== IMAGE CONTAINER ========== */
.rgp-image-container {
    position: relative;
    width: 100%;
    padding-bottom: 100%; /* Default 1:1 ratio */
    overflow: hidden;
    background: var(--rgp-secondary-color);
}

/* Adapter le ratio en fonction de l'image */
.rgp-gallery-item img.rgp-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--rgp-transition-speed) ease;
}

.rgp-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--rgp-overlay-bg);
    display: flex;
    align-items: flex-end;
    padding: var(--rgp-spacing-md);
    opacity: 0;
    transition: opacity var(--rgp-transition-speed) ease;
}

.rgp-gallery-item:hover .rgp-image-overlay {
    opacity: 1;
}

.rgp-gallery-item:hover .rgp-image {
    transform: scale(1.05);
}

.rgp-overlay-content {
    color: white;
    width: 100%;
}

.rgp-overlay-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    color: white;
}

.rgp-overlay-hint {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.9;
    font-style: italic;
}

/* ========== EXPANSION DU CONTENU ========== */
.rgp-expanded-content {
    background: white;
    border-top: 1px solid var(--rgp-border-color);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.rgp-expanded-content.open {
    max-height: 800px;
    opacity: 1;
}

.rgp-expanded-inner {
    padding: var(--rgp-spacing-md);
    position: relative;
}

.rgp-close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: transparent;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--rgp-text-light);
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--rgp-transition-speed) ease;
}

.rgp-close-btn:hover {
    color: var(--rgp-text-dark);
}

.rgp-expanded-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--rgp-text-dark);
    margin: 0 1.5rem 1rem 0;
    padding-right: 2rem;
}

.rgp-expanded-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--rgp-text-light);
    margin-bottom: var(--rgp-spacing-md);
    max-height: 300px;
    overflow-y: auto;
    padding-right: var(--rgp-spacing-sm);
}

.rgp-expanded-text::-webkit-scrollbar {
    width: 6px;
}

.rgp-expanded-text::-webkit-scrollbar-track {
    background: var(--rgp-secondary-color);
    border-radius: 3px;
}

.rgp-expanded-text::-webkit-scrollbar-thumb {
    background: var(--rgp-border-color);
    border-radius: 3px;
}

.rgp-expanded-text::-webkit-scrollbar-thumb:hover {
    background: var(--rgp-text-light);
}

/* ========== BOUTON COPIER ========== */
.rgp-copy-prompt {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: var(--rgp-primary-color);
    color: white;
    border: none;
    border-radius: 0.4rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--rgp-transition-speed) ease;
    margin-top: 0.5rem;
}

.rgp-copy-prompt:hover {
    background: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(99, 102, 241, 0.3);
}

.rgp-copy-prompt:active {
    transform: translateY(0);
}

.rgp-copy-icon {
    font-size: 1rem;
}

.rgp-copy-feedback {
    display: inline-block;
    margin-left: 0.5rem;
    color: #10b981;
    font-size: 0.9rem;
    font-weight: 500;
    animation: fadeIn 0.3s ease;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .rgp-gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--rgp-spacing-sm);
        padding: 0 var(--rgp-spacing-sm);
    }

    .rgp-filters {
        padding: 0 var(--rgp-spacing-sm);
        gap: var(--rgp-spacing-sm);
    }

    .rgp-filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .rgp-overlay-title {
        font-size: 1rem;
    }

    .rgp-expanded-title {
        font-size: 1.1rem;
        margin-right: 1.5rem;
    }

    .rgp-expanded-text {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .rgp-gallery-grid {
        grid-template-columns: 1fr;
    }

    .rgp-filters {
        gap: 0.5rem;
    }

    .rgp-filter-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}

/* ========== DARK MODE SUPPORT ========== */
@media (prefers-color-scheme: dark) {
    :root {
        --rgp-text-dark: #f1f5f9;
        --rgp-text-light: #cbd5e1;
        --rgp-secondary-color: #1e293b;
        --rgp-border-color: #334155;
    }

    .rgp-gallery-item,
    .rgp-expanded-content {
        background: #0f172a;
    }

    .rgp-filter-btn {
        background: #1e293b;
        color: #f1f5f9;
    }

    .rgp-filter-btn:hover {
        background: #0f172a;
    }
}

/* ========== ANIMATION MASONRY ========== */
.rgp-gallery-item {
    animation: slideUp 0.4s ease-out both;
}

.rgp-gallery-item:nth-child(1) { animation-delay: 0.05s; }
.rgp-gallery-item:nth-child(2) { animation-delay: 0.1s; }
.rgp-gallery-item:nth-child(3) { animation-delay: 0.15s; }
.rgp-gallery-item:nth-child(n+4) { animation-delay: 0.2s; }

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}