/* Base & Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Scroll Reveal Animations — progressive enhancement, only below the fold */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        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.visible {
        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; }
}

/* Navbar transition */
#navbar.scrolled {
    background: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(10, 25, 47, 0.06);
}

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

/* Custom selection color */
::selection {
    background: #98FFD8;
    color: #0A192F;
}

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

::-webkit-scrollbar-track {
    background: #F8F9FA;
}

::-webkit-scrollbar-thumb {
    background: #0A192F;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1a3a5c;
}