/* Popup Demo */
#demo-popup {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(10, 10, 15, 0.95);
    color: #fff;
    padding: 20px 30px;
    border-radius: 12px;
    z-index: 10000;
    opacity: 0;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

#demo-popup.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.demo-popup-content {
    display: flex;
    align-items: center;
    gap: 15px;
}

.demo-popup-icon {
    font-size: 1.5rem;
}

.demo-popup-message {
    font-size: 0.95rem;
    margin: 0;
}

/* Bouton Retour Portfolio - Style iPhone/TikTok */
.back-to-portfolio {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 55px;
    height: 110px;
    background: #000;
    border-radius: 12px;
    display: block;
    text-decoration: none;
    z-index: 9999;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
    overflow: hidden;
    border: 3px solid #222;
}

.back-to-portfolio:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 40px rgba(249, 115, 22, 0.4);
    border-color: #f97316;
}

.back-to-portfolio img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}

.back-to-portfolio::after {
    content: '← Portfolio';
    position: absolute;
    right: 65px;
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    background: rgba(10, 10, 15, 0.95);
    color: #fff;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    white-space: nowrap;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    border: 1px solid rgba(249, 115, 22, 0.3);
}

.back-to-portfolio:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

@media (max-width: 768px) {
    .back-to-portfolio {
        width: 45px;
        height: 90px;
        bottom: 15px;
        right: 15px;
        border-width: 2px;
    }
    
    .back-to-portfolio::after {
        display: none;
    }
    
    #demo-popup {
        left: 20px;
        right: 20px;
        transform: translateX(0) translateY(100px);
        bottom: 20px;
    }
    
    #demo-popup.show {
        transform: translateX(0) translateY(0);
    }
}