*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: #d4551a;
    color: white;
}

/* Scroll reveal — progressive enhancement, only active when JS runs and motion is preferred */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }

    .reveal.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

::-webkit-scrollbar-track {
    background: #0f1a2e;
}

::-webkit-scrollbar-thumb {
    background: #d4551a;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #e87230;
}

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

#mobile-menu.open {
    max-height: 400px;
}

/* Navbar transition */
#navbar.scrolled {
    background: rgba(15, 26, 46, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

/* Button focus states */
a:focus-visible, button:focus-visible {
    outline: 2px solid #d4551a;
    outline-offset: 2px;
    border-radius: 4px;
}