/* ========================================================================== navigation.css — header, primary navigation, dropdowns, mobile drawer, and the site footer. ========================================================================== */ /* -------------------------------------------------------------------------- Header -------------------------------------------------------------------------- */ .site-header { position: sticky; inset-block-start: 0; z-index: var(--z-header); background-color: var(--colour-background); border-block-end: var(--rule-width) solid var(--colour-border); transition: background-color var(--duration) var(--easing), border-color var(--duration) var(--easing), color var(--duration) var(--easing); } .site-header__inner { display: flex; gap: var(--space-lg); align-items: center; justify-content: space-between; block-size: var(--header-height); } /* Overlay mode: the header floats over a dark hero until the page is scrolled. Applied by adding data-header="overlay" to . */ body[data-header='overlay'] .site-header { position: fixed; inset-inline: 0; color: var(--colour-text-inverse); background-color: transparent; border-block-end-color: transparent; } body[data-header='overlay'] .site-header .site-logo__mark { color: var(--colour-text-inverse); } body[data-header='overlay'] .site-header.is-solid { color: var(--colour-text); background-color: var(--colour-background); border-block-end-color: var(--colour-border); } body[data-header='overlay'] .site-header.is-solid .site-logo__mark { color: var(--colour-primary); } body[data-header='overlay'] .site-header.is-solid .site-header__inner, .site-header.is-compact .site-header__inner { block-size: var(--header-height-compact); } /* -------------------------------------------------------------------------- Logo -------------------------------------------------------------------------- */ .site-logo { display: inline-flex; gap: var(--space-2xs); align-items: center; flex: none; color: inherit; } .site-logo__mark { inline-size: auto; block-size: 1.75rem; color: var(--colour-primary); } .site-logo__text { font-family: 'Trebuchet MS', 'Calibri', 'Poppins', sans-serif; font-size: 1.25rem; letter-spacing: -0.02em; white-space: nowrap; } /* -------------------------------------------------------------------------- Primary navigation (desktop) -------------------------------------------------------------------------- */ .primary-nav { display: none; } .primary-nav__list { display: flex; align-items: center; gap: clamp(0.5rem, 1.4vw, 1.35rem); margin: 0; padding: 0; list-style: none; } .primary-nav__item { position: relative; } .primary-nav__link { display: inline-flex; gap: 0.3rem; align-items: center; padding: 0.5rem 0; font-family: var(--font-navigation); font-size: 0.9375rem; font-weight: var(--weight-medium); letter-spacing: var(--letter-spacing-nav); color: inherit; white-space: nowrap; background: none; transition: color var(--duration-fast) var(--easing), opacity var(--duration-fast) var(--easing); } .primary-nav__link:hover { opacity: 0.62; } .primary-nav__link[aria-current='page'] { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.45em; text-decoration-color: var(--colour-accent); } .primary-nav__caret { inline-size: 0.55rem; block-size: 0.55rem; transition: transform var(--duration-fast) var(--easing); } .primary-nav__link[aria-expanded='true'] .primary-nav__caret { transform: rotate(180deg); } /* -------------------------------------------------------------------------- Dropdown -------------------------------------------------------------------------- */ .dropdown { position: absolute; inset-block-start: calc(100% + 0.65rem); inset-inline-start: -1.25rem; z-index: var(--z-dropdown); inline-size: max-content; min-inline-size: 20rem; max-inline-size: 24rem; padding: var(--space-2xs); color: var(--colour-text); background-color: var(--colour-surface); border: var(--border-width) solid var(--colour-border); border-radius: var(--card-radius); box-shadow: var(--shadow-raised); opacity: 0; visibility: hidden; transform: translateY(-0.4rem); transition: opacity var(--duration-fast) var(--easing), transform var(--duration-fast) var(--easing), visibility var(--duration-fast) var(--easing); } .primary-nav__item.is-open > .dropdown { opacity: 1; visibility: visible; transform: translateY(0); } .dropdown__list { margin: 0; padding: 0; list-style: none; } /* Panels belonging to items near the end of the bar anchor to their right edge. A left-anchored panel up to 24rem wide runs past the viewport from there, and because the panel is only faded out rather than removed it still lengthens the document and produces horizontal scrolling while closed. Counting from the end keeps this correct whatever number of top-level items a rebrand uses. */ .primary-nav__item:nth-last-child(-n + 3) .dropdown { inset-inline-start: auto; inset-inline-end: -1.25rem; } .dropdown__link { display: block; padding: var(--space-xs) var(--space-sm); border-radius: var(--control-radius); transition: background-color var(--duration-fast) var(--easing); } .dropdown__link:hover { background-color: var(--colour-background-alt); } .dropdown__label { display: block; font-family: var(--font-navigation); font-size: 0.9375rem; font-weight: var(--weight-medium); } .dropdown__description { display: block; margin-block-start: 0.15rem; font-family: var(--font-navigation); font-size: 0.8125rem; line-height: 1.45; color: var(--colour-text-muted); } /* -------------------------------------------------------------------------- Header action -------------------------------------------------------------------------- */ .site-header__action { display: none; flex: none; } /* The button is white here, so it needs the dark surface tone, not --colour-text. */ body[data-header='overlay'] .site-header:not(.is-solid) .site-header__action .button { --button-fg: var(--colour-surface); --button-bg: #fff; --button-border: #fff; } body[data-header='overlay'] .site-header:not(.is-solid) .site-header__action .button:hover { --button-bg: rgb(255 255 255 / 86%); --button-border: rgb(255 255 255 / 86%); } /* -------------------------------------------------------------------------- Menu toggle (burger) -------------------------------------------------------------------------- */ .menu-toggle { display: inline-flex; gap: var(--space-2xs); align-items: center; flex: none; padding: 0.6rem 0.25rem; font-family: var(--font-navigation); font-size: 0.875rem; font-weight: var(--weight-medium); letter-spacing: 0.04em; text-transform: uppercase; color: inherit; } .menu-toggle__bars { position: relative; inline-size: 1.375rem; block-size: 0.75rem; } .menu-toggle__bars span { position: absolute; inset-inline: 0; block-size: 1px; background-color: currentcolor; transition: transform var(--duration) var(--easing), opacity var(--duration-fast) var(--easing); } .menu-toggle__bars span:nth-child(1) { inset-block-start: 0; } .menu-toggle__bars span:nth-child(2) { inset-block-start: 50%; } .menu-toggle__bars span:nth-child(3) { inset-block-start: 100%; } .menu-toggle[aria-expanded='true'] .menu-toggle__bars span:nth-child(1) { transform: translateY(0.375rem) rotate(45deg); } .menu-toggle[aria-expanded='true'] .menu-toggle__bars span:nth-child(2) { opacity: 0; } .menu-toggle[aria-expanded='true'] .menu-toggle__bars span:nth-child(3) { transform: translateY(-0.375rem) rotate(-45deg); } /* -------------------------------------------------------------------------- Mobile navigation drawer -------------------------------------------------------------------------- */ .mobile-nav { position: fixed; inset: 0; z-index: var(--z-overlay); display: flex; flex-direction: column; padding-block-start: var(--header-height); overflow-y: auto; color: var(--colour-text); background-color: var(--colour-background); visibility: hidden; opacity: 0; transform: translateY(-1.5rem); transition: opacity var(--duration) var(--easing), transform var(--duration) var(--easing-emphasis), visibility var(--duration) var(--easing); } .mobile-nav.is-open { visibility: visible; opacity: 1; transform: translateY(0); } .mobile-nav__inner { padding-block: var(--space-lg) var(--space-2xl); } .mobile-nav__list { margin: 0; padding: 0; list-style: none; border-block-start: var(--rule-width) solid var(--colour-border); } .mobile-nav__item { border-block-end: var(--rule-width) solid var(--colour-border); } .mobile-nav__link { display: flex; gap: var(--space-md); align-items: center; justify-content: space-between; inline-size: 100%; padding-block: var(--space-md); font-family: var(--font-heading); font-size: clamp(1.5rem, 6vw, 2rem); letter-spacing: -0.02em; text-align: start; color: inherit; } .mobile-nav__link[aria-current='page'] { color: var(--colour-accent); } .mobile-nav__toggle-icon { position: relative; flex: none; inline-size: 0.875rem; block-size: 0.875rem; } .mobile-nav__toggle-icon::before, .mobile-nav__toggle-icon::after { content: ''; position: absolute; inset-block-start: 50%; inset-inline-start: 0; inline-size: 100%; block-size: 1px; background-color: currentcolor; transition: transform var(--duration) var(--easing); } .mobile-nav__toggle-icon::after { transform: rotate(90deg); } [aria-expanded='true'] > .mobile-nav__toggle-icon::after { transform: rotate(0deg); } .mobile-nav__sublist { margin: 0; padding: 0 0 var(--space-md); list-style: none; } .mobile-nav__sublink { display: block; padding-block: var(--space-2xs); font-family: var(--font-navigation); font-size: 1.0625rem; color: var(--colour-text-muted); } .mobile-nav__sublink:hover { color: var(--colour-text); } .mobile-nav__footer { margin-block-start: var(--space-xl); display: grid; gap: var(--space-md); } .mobile-nav__contact { font-family: var(--font-navigation); font-size: var(--size-small); color: var(--colour-text-muted); } /* -------------------------------------------------------------------------- Footer -------------------------------------------------------------------------- */ .site-footer { padding-block: clamp(3.5rem, 7vw, 6rem) var(--space-xl); color: var(--colour-text-inverse); background-color: var(--colour-surface-inverse); border-block-start: 1px solid var(--colour-border); } .site-footer a { color: inherit; } .site-footer__top { display: grid; gap: var(--space-xl) var(--grid-gap); padding-block-end: clamp(2.5rem, 5vw, 4rem); border-block-end: 1px solid var(--colour-border-inverse); } .site-footer__brand { max-inline-size: 28ch; } .site-footer__statement { margin-block-start: var(--space-md); font-family: var(--font-heading); font-size: var(--size-h4); line-height: 1.25; color: var(--colour-text-inverse); } .site-footer__columns { display: grid; gap: var(--space-lg) var(--grid-gap); } .site-footer__heading { margin-block-end: var(--space-md); font-family: var(--font-navigation); font-size: var(--size-eyebrow); font-weight: var(--weight-bold); letter-spacing: var(--letter-spacing-eyebrow); text-transform: uppercase; color: var(--colour-text-muted-inverse); } .site-footer__list { margin: 0; padding: 0; list-style: none; } .site-footer__list li + li { margin-block-start: var(--space-2xs); } .site-footer__list a { font-family: var(--font-navigation); font-size: var(--size-small); color: rgb(246 243 238 / 78%); transition: color var(--duration-fast) var(--easing); } .site-footer__list a:hover { color: #fff; } .site-footer__middle { display: grid; gap: var(--space-lg) var(--grid-gap); padding-block: clamp(2rem, 4vw, 3rem); border-block-end: 1px solid var(--colour-border-inverse); font-family: var(--font-navigation); font-size: var(--size-small); color: rgb(246 243 238 / 72%); } .site-footer__label { display: block; margin-block-end: var(--space-2xs); font-size: var(--size-eyebrow); font-weight: var(--weight-bold); letter-spacing: var(--letter-spacing-eyebrow); text-transform: uppercase; color: var(--colour-text-muted-inverse); } .site-footer__social { display: flex; flex-wrap: wrap; gap: var(--space-md); } .site-footer__social a { display: inline-flex; gap: var(--space-3xs); align-items: center; font-size: var(--size-small); color: rgb(246 243 238 / 78%); transition: color var(--duration-fast) var(--easing); } .site-footer__social a:hover { color: #fff; } .site-footer__social img, .site-footer__social svg { inline-size: 1rem; block-size: 1rem; } .site-footer__bottom { display: flex; flex-wrap: wrap; gap: var(--space-md) var(--space-lg); align-items: center; justify-content: space-between; padding-block-start: var(--space-lg); font-family: var(--font-navigation); font-size: 0.8125rem; color: var(--colour-text-muted-inverse); } .site-footer__legal-links { display: flex; flex-wrap: wrap; gap: var(--space-md); } .site-footer__legal-links button, .site-footer__legal-links a { font-family: inherit; font-size: inherit; color: inherit; transition: color var(--duration-fast) var(--easing); } .site-footer__legal-links button:hover, .site-footer__legal-links a:hover { color: #fff; } .site-footer__disclaimer { margin-block-start: var(--space-md); max-inline-size: 78ch; font-family: var(--font-navigation); font-size: 0.8125rem; line-height: 1.6; color: rgb(167 179 188 / 85%); }