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

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

body {
    overflow-x: hidden;
}

/* Scroll-reveal animations — progressive enhancement only */
@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; }
}

/* Navbar scroll state */
.nav-scrolled {
    background: rgba(255, 255, 255, 0.97) !important;
    box-shadow: 0 1px 20px rgba(10, 22, 40, 0.08);
}

.nav-scrolled .nav-logo-color {
    color: #0f2140 !important;
}

.nav-scrolled .nav-link {
    color: #0f2140 !important;
}

.nav-scrolled .mobile-nav-link {
    color: #0f2140 !important;
}

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
}

/* Selection color */
::selection {
    background: #22c55e;
    color: #0a1628;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f0fdf4;
}
::-webkit-scrollbar-thumb {
    background: #0f2140;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #152e58;
}