/* Page structure: containers, sections, grids, header, mobile navigation and footer. */
.container {
    width: 100%;
    max-width: calc(var(--container-width) + 2 * var(--gutter));
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.container--narrow {
    max-width: calc(var(--container-narrow-width) + 2 * var(--gutter));
}

.section {
    padding-block: var(--section-space);
}

.section--raised {
    background: var(--color-surface);
}

.grid-2,
.grid-3 {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
}

@media (min-width: 700px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 960px) {
    .grid-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Announcement */
.announcement-bar {
    position: relative;
    z-index: 51;
    padding: .55rem var(--gutter);
    background: var(--color-surface-raised);
    box-shadow: inset 0 -1px 0 var(--color-line);
    color: var(--color-text);
    font-size: .875rem;
    line-height: 1.4;
    text-align: center;
}

/* Header. Solid by default; transparent over the page top only once script can restore it. */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-height);
    margin-bottom: calc(-1 * var(--header-height));
    background: var(--color-bg);
    box-shadow: inset 0 -1px 0 var(--color-line);
    transition: background-color .25s ease, box-shadow .25s ease;
}

.js .site-header:not(.is-solid) {
    background: transparent;
    box-shadow: none;
}

.site-header__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    height: 100%;
}

.site-header__brand {
    flex: none;
    border-radius: var(--radius);
}

.logo--no-tagline {
    width: 140px;
}

.logo--full {
    width: 260px;
}

@media (min-width: 960px) {
    .logo--no-tagline {
        width: 176px;
    }
}

/* Desktop navigation */
.site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav__item {
    position: relative;
}

.site-nav__link {
    display: inline-block;
    padding: .4rem 0;
    color: var(--color-text-muted);
    font-size: .9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: color .15s ease;
}

.site-nav__link:hover {
    color: var(--color-text-strong);
}

.site-nav__link[aria-current="page"] {
    color: var(--color-text-strong);
    box-shadow: inset 0 -2px 0 var(--color-bronze);
}

.site-nav__sub {
    position: absolute;
    top: 100%;
    left: -1rem;
    display: none;
    min-width: 13rem;
    margin: 0;
    padding: .5rem;
    border-radius: var(--radius-large);
    background: var(--color-surface-raised);
    box-shadow: inset 0 0 0 1px var(--color-line), 0 18px 40px -16px #000;
    list-style: none;
}

.site-nav__item:hover > .site-nav__sub,
.site-nav__item:focus-within > .site-nav__sub {
    display: block;
}

.site-nav__item.is-dismissed > .site-nav__sub {
    display: none;
}

.site-nav__sub .site-nav__link {
    display: block;
    padding: .45rem .6rem;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: var(--radius);
    background: none;
    box-shadow: inset 0 0 0 1px var(--color-line-strong);
    color: var(--color-text-strong);
    cursor: pointer;
}

.nav-toggle .icon {
    width: 22px;
    height: 22px;
}

/* Below the desktop width, or on touch where hover menus cannot open, navigation moves into the panel.
   Without script the panel cannot open, so the links stay in the bar and wrap. */
@media (max-width: 959.98px), (hover: none) {
    html:not(.js) .site-header {
        position: static;
        height: auto;
        margin-bottom: 0;
        padding-block: .75rem;
    }

    html:not(.js) .site-header ~ main > :first-child {
        padding-top: var(--section-space);
    }

    html:not(.js) .site-header__bar {
        flex-wrap: wrap;
    }

    html:not(.js) .site-nav,
    html:not(.js) .site-nav__list {
        flex-wrap: wrap;
        gap: .5rem 1.25rem;
    }

    .js .site-nav {
        display: none;
    }

    .js .nav-toggle {
        display: inline-flex;
    }
}

/* Mobile navigation panel */
.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    flex-direction: column;
    padding: 0 var(--gutter) 2rem;
    overflow-y: auto;
    background:
        radial-gradient(420px 320px at 100% 0, var(--tint-bronze-glow), transparent 70%),
        radial-gradient(360px 320px at 0 100%, var(--tint-green-glow), transparent 70%),
        var(--color-bg);
}

.mobile-nav[hidden] {
    display: none;
}

.mobile-nav__bar {
    display: flex;
    flex: none;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.mobile-nav__bar .eyebrow {
    margin: 0;
}

.mobile-nav__bar .nav-toggle {
    display: inline-flex;
}

.mobile-nav__list {
    margin: 1rem 0 2rem;
    padding: 0;
    list-style: none;
}

.mobile-nav__list > li {
    border-bottom: 1px solid var(--color-line);
}

.mobile-nav__link {
    display: block;
    padding: .85rem 0;
    color: var(--color-text-strong);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -.01em;
    text-decoration: none;
}

.mobile-nav__link[aria-current="page"] {
    color: var(--color-bronze-light);
}

.mobile-nav__sub {
    margin: -.35rem 0 .75rem;
    padding: 0 0 0 1rem;
    list-style: none;
}

.mobile-nav__sub .mobile-nav__link {
    padding: .45rem 0;
    color: var(--color-text-muted);
    font-family: var(--font-body);
    font-size: 1rem;
    letter-spacing: 0;
}

.mobile-nav .btn {
    width: 100%;
    margin-top: auto;
}

/* Footer */
.site-footer {
    flex: none;
    position: relative;
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-size: .9375rem;
}

.site-footer::before {
    content: "";
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-bronze) 18%, var(--color-green-light) 82%, transparent);
}

/* Flex, not a fixed grid: the contact column is absent until the owner fills it in. */
.site-footer__main {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2.5rem 4rem;
    padding-block: 3.5rem 2.5rem;
}

.site-footer__brand {
    flex: 1 1 280px;
}

.site-footer__brand .logo {
    margin-bottom: 1.25rem;
}

.site-footer__blurb {
    max-width: 40ch;
}

.site-footer__legal {
    margin: 0;
    color: var(--color-text);
    font-weight: 500;
}

.site-footer__heading {
    margin: 0 0 .9rem;
}

.site-footer__list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-footer__list li + li {
    margin-top: .35rem;
}

.site-footer__links {
    column-count: 2;
    column-gap: 3rem;
}

.site-footer__links li {
    break-inside: avoid;
}

.site-footer__list a,
.site-footer__contact a {
    display: inline-block;
    padding-block: .15rem;
    color: var(--color-text-muted);
    text-decoration: none;
}

.site-footer__list a:hover,
.site-footer__contact a:hover {
    color: var(--color-text-strong);
    text-decoration: underline;
}

.site-footer__contact {
    margin: 0;
    font-style: normal;
}

.site-footer__contact > * {
    display: block;
    margin: 0 0 .35rem;
}

.site-footer__address {
    white-space: pre-line;
}

.site-footer__social {
    margin-top: 1rem;
}

.site-footer__bottom {
    border-top: 1px solid var(--color-line);
}

.site-footer__bottom-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .25rem 2rem;
    padding-block: 1.1rem;
    font-size: .8125rem;
}

.site-footer__bottom p {
    margin: 0;
}

.site-footer__tagline {
    color: var(--color-bronze-light);
    font-family: var(--font-mono);
    font-size: .75rem;
    letter-spacing: .04em;
}