/* Custom styles for Bicheng Nan Md */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Floating animation for decorative blobs */
@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

@keyframes float-delay {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-15px) scale(1.03); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delay {
    animation: float-delay 8s ease-in-out infinite;
}

/* Scroll reveal animations (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s ease, transform 0.8s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

/* Navbar scroll effect */
.navbar-scrolled {
    box-shadow: 0 4px 20px rgba(112, 81, 132, 0.1);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #fdf2f8;
}

::-webkit-scrollbar-thumb {
    background: #f9a8d4;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #f472b6;
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid #705184;
    outline-offset: 2px;
}

/* Button hover effects */
button, a {
    -webkit-tap-highlight-color: transparent;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, #fce7f3 0%, #fef3c7 100%);
}

/* Mobile menu transition */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

#mobile-menu.open {
    max-height: 400px;
}

/* Service card hover lift */
.group:hover {
    transform: translateY(-4px);
}

.group {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}