html {
    scroll-behavior: smooth;
    scroll-padding-top: 5.5rem;
}

.site-header {
    padding-top: calc(env(safe-area-inset-top, 0px) + 0.75rem);
    padding-bottom: 0.75rem;
}

.nav-menu {
    gap: 0.125rem;
}

.nav-link {
    position: relative;
    display: inline-block;
    padding: 0.4rem 0.7rem;
    font-family: "Montserrat", "Hanken Grotesk", "Inter", sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    line-height: 1.25;
    color: #5a616b;
    white-space: nowrap;
    text-decoration: none;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0.7rem;
    right: 0.7rem;
    bottom: 0.2rem;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, #00417a 0%, #2160a3 100%);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: #00417a;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-link-active {
    color: #00417a;
}

.nav-link-active::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, #00417a 0%, #17599c 100%);
}

@media (prefers-reduced-motion: reduce) {
    .nav-link,
    .nav-link::after {
        transition: none;
    }
}

.mobile-menu {
    position: fixed;
    top: 5rem;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1rem 2rem;
    background: #ffffff;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.5rem);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-nav-link {
    display: block;
    padding: 0.875rem 0.5rem;
    font-family: "Montserrat", "Inter", sans-serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #1e293b;
    text-decoration: none;
    border-bottom: 1px solid #e2e8f0;
    transition: color 0.2s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.mobile-nav-link-active {
    color: #17599c;
}

.mobile-menu-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.mobile-menu-social a {
    color: #17599c;
    transition: color 0.2s ease;
}

.mobile-menu-social a:hover {
    color: #00417a;
}

body.mobile-menu-open {
    overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
    .mobile-menu {
        transition: none;
    }
}