mobile-interactions.css

/* Mobile Touch Interactions CSS for Bird's Nest Landing Page */

/* Enhanced touch feedback for About section */
@media (hover: none) and (pointer: coarse) {
    /* Feature item touch interactions */
    .feature-item {
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    box-shadow 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    background-color 0.3s ease;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
        cursor: pointer;
    }
    
    .feature-item:active {
        transform: scale(0.98);
        box-shadow: 0 4px 16px rgba(200, 150, 120, 0.15);
        background: linear-gradient(135deg, 
            rgba(255, 255, 255, 0.95) 0%, 
            rgba(248, 246, 243, 0.8) 100%);
    }
    
    .feature-icon {
        transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                   background 0.3s ease,
                   color 0.3s ease;
    }
    
    .feature-item:active .feature-icon {
        transform: scale(1.1) rotate(15deg);
        background: linear-gradient(135deg, #c89678 0%, #96b4c8 100%);
        color: white;
    }
    
    /* Better touch effects for small screens */
    @media screen and (max-width: 576px) {
        .feature-item {
            position: relative;
            overflow: hidden;
        }
        
        .feature-item:active::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at center, 
                        rgba(200, 150, 120, 0.1) 0%,
                        transparent 70%);
            animation: ripple 0.8s ease-out;
        }
        
        @keyframes ripple {
            from { opacity: 1; transform: scale(0.3); }
            to { opacity: 0; transform: scale(2); }
        }
    }
    
    /* Image placeholder touch interactions */
    .image-placeholder {
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    
    .image-placeholder:active {
        transform: scale(0.97);
        box-shadow: 0 15px 45px rgba(200, 150, 120, 0.2);
    }
    
    .image-placeholder i {
        transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }
    
    .image-placeholder:active i {
        transform: scale(1.1) rotate(10deg);
    }
}

/* Add smooth content reveal animations for About section on mobile */
@media (max-width: 767px) {
    .about .section-header,
    .feature-item,
    .image-placeholder {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }
    
    .about .section-header.animate,
    .feature-item.animate,
    .image-placeholder.animate {
        opacity: 1;
        transform: translateY(0);
    }
    
    /* Staggered animation for feature items */
    .feature-item:nth-child(1) {
        transition-delay: 0.1s;
    }
    
    .feature-item:nth-child(2) {
        transition-delay: 0.2s;
    }
    
    .feature-item:nth-child(3) {
        transition-delay: 0.3s;
    }
}

/* Improve scrolling performance */
@media (max-width: 991px) {
    .about {
        will-change: transform;
        backface-visibility: hidden;
    }
    
    .feature-item {
        will-change: transform;
    }
}

/* Swipe gestures for About section */
@media (pointer: coarse) {
    .about {
        position: relative;
        /* Enable smooth scrolling for the section */
        scroll-behavior: smooth;
        /* Add momentum scrolling on iOS */
        -webkit-overflow-scrolling: touch;
    }
    
    .about::after {
        content: '';
        position: absolute;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 40px;
        background-color: rgba(200, 150, 120, 0.1);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        pointer-events: none;
        opacity: 0.7;
        animation: pulse 1.5s infinite alternate ease-in-out;
    }
    
    .about::before {
        content: '';
        position: absolute;
        bottom: 30px;
        left: 50%;
        transform: translateX(-50%);
        border-left: 8px solid transparent;
        border-right: 8px solid transparent;
        border-top: 8px solid rgba(200, 150, 120, 0.6);
        pointer-events: none;
        z-index: 2;
        animation: bounce 1.5s infinite alternate ease-in-out;
    }
    
    @keyframes pulse {
        from { transform: translateX(-50%) scale(0.8); opacity: 0.5; }
        to { transform: translateX(-50%) scale(1.1); opacity: 0.8; }
    }
    
    @keyframes bounce {
        from { transform: translateX(-50%) translateY(-5px); }
        to { transform: translateX(-50%) translateY(5px); }
    }
    
    /* Show bounce indicator only on smaller screens in portrait */
    @media screen and (min-width: 768px), (orientation: landscape) {
        .about::after, .about::before {
            display: none;
        }
    }
}

/* Touch optimizations for iPhone SE (375x667) */
@media (width: 375px) and (height: 667px), (width: 667px) and (height: 375px) {
    /* Increased touch targets */
    .nav-menu li a,
    .btn,
    .feature-item,
    .benefit-card,
    .social-link,
    .footer-links a {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    /* Feature items touch effects */
    .feature-item {
        transition: transform 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    background-color 0.25s ease;
    }
    
    .feature-item:active {
        transform: scale(0.97);
        background: rgba(248, 246, 243, 0.8);
    }
    
    .feature-item:active .feature-icon {
        transform: scale(1.1);
        background: linear-gradient(135deg, #c89678 0%, #96b4c8 100%);
        color: white;
    }
    
    /* Reduce animation durations for smoother experience on lower-power devices */
    .touch-ripple {
        animation-duration: 0.5s;
    }
    
    /* Optimize scrolling */
    .about,
    .benefits,
    .testimonials {
        scroll-padding-top: 60px;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Bounce indicator visibility */
    .about::after,
    .about::before {
        animation-duration: 1s;
        bottom: 15px;
    }
}