/* Custom styles for Dr. George Backardjiev MD website */

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

/* Scroll indicator animation */
@keyframes scrollIndicator {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(400%); }
}

.animate-scroll-indicator {
    animation: scrollIndicator 1.5s ease-in-out infinite;
}

/* Scroll reveal animations */
.reveal-on-scroll {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-on-scroll[data-revealed="false"] {
    opacity: 0;
    transform: translateY(30px);
}

/* Navbar transitions */
.nav-text, .nav-subtext {
    transition: color 0.3s ease;
}

/* Mobile menu links */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 100ms; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 150ms; }
#mobile-link:nth-child(3) { transition-delay: 200ms; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 250ms; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal-on-scroll {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .animate-scroll-indicator {
        animation: none;
    }
}

/* Focus styles for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Selection color */
::selection {
    background: #ccfbf1;
    color: #134e4a;
}