*, *::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;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #060d1a;
}

::-webkit-scrollbar-thumb {
    background: #1e3a5f;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0f766e;
}

::selection {
    background: rgba(15, 114, 110, 0.4);
    color: #f1f5f9;
}

/* Scroll reveal base — content always visible */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar scroll state */
.nav-scrolled {
    background: rgba(6, 13, 26, 0.95) !important;
    backdrop-filter: blur(12px);
    border-bottom-color: rgba(15, 114, 110, 0.3) !important;
    box-shadow: 0 1px 0 rgba(15, 114, 110, 0.1);
}

/* FAQ transitions */
.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-content.open {
    max-height: 200px;
}

.faq-icon {
    flex-shrink: 0;
}

.faq-icon.rotated {
    transform: rotate(180deg);
}

/* Mobile menu */
#mobile-menu {
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}