:root {
            --primary-color: #000000;
            --accent-color: #FF6B00;
            --secondary-color: #1a1a1a;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            background-color: var(--primary-color);
            color: white;
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
        }

        h1, h2, h3, h4 {
            font-family: 'Playfair Display', serif;
        }

        /* Neural Network Canvas */
        #neural-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            opacity: 0.4;
        }

        #particles-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }
        
        /* Navigation */
        nav {
            background-color: rgba(0, 0, 0, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--accent-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
        }
        
        /* Hero Section */
        .blog-hero {
            height: 60vh;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
            margin-top: 80px;
        }
        
        .blog-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(255,107,0,0.1) 100%);
            z-index: 1;
        }
        
        .blog-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
        }

        /* Section Styling */
        section {
            padding: 100px 0;
            position: relative;
            z-index: 2;
        }
        
        .section-title {
            font-size: 3rem;
            margin-bottom: 50px;
            text-align: center;
            color: var(--accent-color);
        }

        /* Blog Navigation - Design Innovant */
.blog-nav {
    position: sticky;
    top: 80px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 107, 0, 0.2);
    padding: 15px 0;
    margin: -80px 0 50px 0; /* Margin négatif pour remonter */
}

        .blog-nav-container {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .nav-btn {
            background: transparent;
            border: 1px solid rgba(255, 107, 0, 0.3);
            color: rgba(255, 255, 255, 0.7);
            padding: 15px 30px;
            border-radius: 20px;
            transition: all 0.4s ease;
            cursor: pointer;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
            overflow: hidden;
        }

        .nav-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 107, 0, 0.2), transparent);
            transition: left 0.5s ease;
        }

        .nav-btn:hover::before {
            left: 100%;
        }

        .nav-btn.active, .nav-btn:hover {
            background: var(--accent-color);
            color: #000;
            border-color: var(--accent-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(255, 107, 0, 0.3);
        }

        .nav-btn i {
            font-size: 1.2rem;
        }

        /* Mobile Floating Navigation */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 100px;
            right: 20px;
            z-index: 1001;
            background: var(--accent-color);
            color: #000;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 10px 30px rgba(255, 107, 0, 0.4);
            transition: all 0.3s ease;
        }

        .mobile-nav {
            position: fixed;
            top: 170px;
            right: 20px;
            z-index: 1000;
            background: rgba(0, 0, 0, 0.95);
            border: 1px solid rgba(255, 107, 0, 0.3);
            border-radius: 4px;
            padding: 20px;
            backdrop-filter: blur(10px);
            transform: translateY(-20px);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .mobile-nav-btn {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 15px;
            color: white;
            text-decoration: none;
            border-radius: 2px;
            transition: all 0.3s ease;
            margin-bottom: 10px;
        }

        .mobile-nav-btn:last-child {
            margin-bottom: 0;
        }

        .mobile-nav-btn:hover, .mobile-nav-btn.active {
            background: rgba(255, 107, 0, 0.2);
            color: var(--accent-color);
        }

        /* Blog Content Sections */
        .blog-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .blog-content.active {
            display: block;
        }

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

        /* Mixed Content Grid - Design Unique */
        .mixed-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .mixed-item {
            background: rgba(0, 0, 0, 0.6);
            border: 1px solid rgba(255, 107, 0, 0.2);
            border-radius: 5px;
            overflow: hidden;
            transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
            backdrop-filter: blur(10px);
            position: relative;
        }

        .mixed-item::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 107, 0, 0.1) 0%, transparent 70%);
            opacity: 0;
            transition: all 0.8s ease;
            z-index: 1;
        }

        .mixed-item:hover::before {
            opacity: 1;
            transform: translate(25%, 25%);
        }

        .mixed-item:hover {
            transform: translateY(-15px);
            border-color: var(--accent-color);
            box-shadow: 0 30px 80px rgba(255, 107, 0, 0.3);
        }

        .item-media {
            width: 100%;
            height: 250px;
            object-fit: cover;
            transition: all 0.5s ease;
        }

        .mixed-item:hover .item-media {
            transform: scale(1.05);
        }

        .video-thumbnail {
            position: relative;
            overflow: hidden;
        }

        .video-thumbnail::after {
            content: '\f04b';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            background: rgba(255, 107, 0, 0.8);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            transition: all 0.3s ease;
        }

        .video-thumbnail:hover::after {
            background: var(--accent-color);
            transform: translate(-50%, -50%) scale(1.1);
        }

        .item-content {
            padding: 25px;
        }

        .item-category {
            display: inline-block;
            background: rgba(255, 107, 0, 0.2);
            color: var(--accent-color);
            padding: 5px 15px;
            border-radius: 2px;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 15px;
        }

        .item-title {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 15px;
            font-weight: 700;
            line-height: 1.3;
        }

        .item-excerpt {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .item-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }

        /* Video Grid - Design Spécial Vidéothèque */
        .video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .video-item {
            background: rgba(0, 0, 0, 0.6);
            border: 1px solid rgba(255, 107, 0, 0.2);
            border-radius: 5px;
            overflow: hidden;
            transition: all 0.5s ease;
            backdrop-filter: blur(10px);
        }

        .video-item:hover {
            transform: translateY(-10px);
            border-color: var(--accent-color);
            box-shadow: 0 20px 60px rgba(255, 107, 0, 0.3);
        }

        .video-player {
            width: 100%;
            height: 250px;
            background: #000;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .video-placeholder {
            text-align: center;
            color: var(--accent-color);
        }

        .video-placeholder i {
            font-size: 3rem;
            margin-bottom: 15px;
        }

        /* Photo Grid - Design Spécial Photothèque */
        .photo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 50px;
        }

        .photo-item {
            background: rgba(0, 0, 0, 0.6);
            border: 1px solid rgba(255, 107, 0, 0.2);
            border-radius: 3px;
            overflow: hidden;
            transition: all 0.5s ease;
            backdrop-filter: blur(10px);
            position: relative;
        }

        .photo-item:hover {
            transform: scale(1.05);
            border-color: var(--accent-color);
            box-shadow: 0 15px 40px rgba(255, 107, 0, 0.3);
        }

        .photo-image {
            width: 100%;
            height: 300px;
            object-fit: cover;
            transition: all 0.5s ease;
        }

        .photo-item:hover .photo-image {
            transform: scale(1.1);
        }

        .photo-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            background: linear-gradient(transparent, rgba(0,0,0,0.8));
            padding: 20px;
            transform: translateY(100%);
            transition: all 0.3s ease;
        }

        .photo-item:hover .photo-overlay {
            transform: translateY(0);
        }

        .photo-title {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .photo-date {
            color: var(--accent-color);
            font-size: 0.9rem;
        }

        /* Press Grid - Design Spécial Revue de Presse */
        .press-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .press-item {
            background: rgba(0, 0, 0, 0.6);
            border: 1px solid rgba(255, 107, 0, 0.2);
            border-radius: 3px;
            padding: 30px;
            transition: all 0.5s ease;
            backdrop-filter: blur(10px);
            position: relative;
        }

        .press-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--accent-color);
            border-radius: 15px 0 0 15px;
        }

        .press-item:hover {
            transform: translateY(-10px);
            border-color: var(--accent-color);
            box-shadow: 0 20px 60px rgba(255, 107, 0, 0.3);
        }

        .press-source {
            color: var(--accent-color);
            font-weight: 600;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .press-title {
            font-size: 1.3rem;
            color: white;
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .press-excerpt {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .press-link {
            color: var(--accent-color);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .press-link:hover {
            color: #ff8c33;
            transform: translateX(5px);
        }

        /* Load More Button */
        .load-more {
            text-align: center;
            margin-top: 60px;
        }

        .load-btn {
            background: transparent;
            border: 2px solid var(--accent-color);
            color: var(--accent-color);
            padding: 15px 40px;
            border-radius: 20px;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.4s ease;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .load-btn:hover {
            background: var(--accent-color);
            color: #000;
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(255, 107, 0, 0.4);
        }

        /* Footer */
        footer {
            background: #000;
            border-top: 1px solid rgba(255, 107, 0, 0.2);
            padding: 80px 0 40px;
            position: relative;
            z-index: 2;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section-title {
                font-size: 2.5rem;
            }
            
            .mixed-grid, .video-grid, .press-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
            
            .blog-nav {
                display: none;
            }
            
            .mobile-nav-toggle {
                display: flex;
            }
            
            .mixed-grid, .video-grid, .photo-grid, .press-grid {
                grid-template-columns: 1fr;
            }
            
            .blog-hero {
                height: 50vh;
                margin-top: 70px;
            }
        }