/* Base Styles */
html {
    scroll-behavior: smooth;
}

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

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

::-webkit-scrollbar-track {
    background: #fafaf9;
}

::-webkit-scrollbar-thumb {
    background: #d6d3d1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a29e;
}

/* Animation Keyframes */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate-fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-fade-in {
    animation: fadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Scroll Reveal Styles */
.reveal-on-scroll {
    /* Default state: visible for accessibility */
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal-on-scroll {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), 
                    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .reveal-on-scroll.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Menu Transitions */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Hamburger Animation */
#menu-btn.active #bar1 {
    transform: rotate(45deg) translate(5px, 5px);
}

#menu-btn.active #bar2 {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Navbar Scrolled State */
#navbar.scrolled {
    background: rgba(250, 250, 249, 0.95);
    backdrop-filter: blur(10px);
    padding-top: 1rem;
    padding-bottom: 1rem;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

/* Image Loading Placeholder */
img {
    background-color: #e7e5e4;
}

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

/* Selection Color */
::selection {
    background-color: #99f6e4;
    color: #134e4a;
}