/* Custom styles and animations */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #F7FAFC;
}

::-webkit-scrollbar-thumb {
    background: #008080;
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: #006666;
}

/* Animation keyframes */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 128, 128, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 128, 128, 0.6); }
}

/* Animation classes */
.float-animation {
    animation: float 3s ease-in-out infinite;
}

.pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Reveal on scroll (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    }
    
    .reveal.active {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus styles for accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid #008080;
    outline-offset: 2px;
}

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

#mobile-menu.open {
    max-height: 500px;
}

/* Image loading placeholder */
img {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

img[src] {
    animation: none;
    background: none;
}