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

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

body {
    overflow-x: hidden;
}

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

::-webkit-scrollbar-track {
    background: #102a43;
}

::-webkit-scrollbar-thumb {
    background: #d99a1e;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #c47f12;
}

/* Selection */
::selection {
    background: #d99a1e;
    color: #102a43;
}

/* Animation Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* Scroll Reveal (progressive enhancement - content is visible by default) */
.reveal-on-scroll {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal-on-scroll {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .reveal-on-scroll.is-visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar transition states */
#navbar.scrolled {
    background: rgba(10, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #d99a1e;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link-text {
    color: #ffffff;
}

/* Mobile menu */
#mobile-menu {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-link {
    display: block;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-link:last-child {
    border-bottom: none;
}

/* Select styling */
select option {
    background: #102a43;
    color: #ffffff;
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid #d99a1e;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    #navbar, #contact-form, .reveal-on-scroll {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}