/*
 * Site chrome for the public pages (layouts/app.blade.php): the header, the search modal and
 * page-to-page transitions.
 *
 * Hand-written on purpose: the public site loads a purged Tailwind bundle (index.css) from an
 * old build, so utilities that weren't in use then don't exist. Sizes follow `.container`
 * (max 1400px, 1rem / 1.5rem gutters) so the header lines up with page content.
 */

:root {
    --sc-ink: #0f172a;
    --sc-ink-2: #334155;
    --sc-muted: #64748b;
    --sc-brand: #2563eb;
    --sc-brand-ink: #1d4ed8;
    --sc-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --sc-ease-exit: cubic-bezier(0.4, 0, 1, 1);
}

/* ── Header ──────────────────────────────────────────────────────────────── */

.site-nav {
    /* Colours for the transparent state, over the home page's hero photo. */
    --nav-fg: #ffffff;
    --nav-fg-soft: rgba(255, 255, 255, 0.86);
    --nav-line: #ffffff;
    --nav-hover: rgba(255, 255, 255, 0.14);
    --nav-height: 76px;

    position: fixed;
    inset: 0 0 auto 0;
    z-index: 50;
    width: 100%;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    color: var(--nav-fg);
    transition: color 0.3s var(--sc-ease-out);
}

/* The glass bar is an element of its own, so it can fade in on scroll — and so neither its
   blur nor a view-transition name ever sits on an ancestor of another blurred surface. (A
   view-transition-name makes an element a backdrop root: any backdrop-filter inside it could
   only blur the header itself.) */
.site-nav__glass {
    position: absolute;
    inset: 0;
    pointer-events: none;
    view-transition-name: site-nav-glass;
    background: rgba(255, 255, 255, 0.78);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.07);
    box-shadow: 0 6px 24px -12px rgba(15, 23, 42, 0.18);
    opacity: 0;
    transition: opacity 0.3s var(--sc-ease-out);
}

.site-nav[data-state="solid"] {
    --nav-fg: var(--sc-ink);
    --nav-fg-soft: var(--sc-ink-2);
    --nav-line: var(--sc-brand);
    --nav-hover: rgba(15, 23, 42, 0.06);
    --nav-height: 64px;
}

.site-nav[data-state="solid"] .site-nav__glass {
    opacity: 1;
}

/* Logo, links and actions on one grid: the links sit in the true centre of the page,
   whatever the widths on either side. */
.site-nav__inner {
    position: relative;
    view-transition-name: site-nav;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 24px;
    width: 100%;
    max-width: 1400px;
    height: var(--nav-height);
    margin: 0 auto;
    padding: 0 1rem;
    transition: height 0.3s var(--sc-ease-out);
}

@media (min-width: 768px) {
    .site-nav__inner {
        padding: 0 1.5rem;
    }
}

.site-nav__brand {
    display: inline-grid;
    justify-self: start;
    align-items: center;
    border-radius: 8px;
    outline: none;
}

.site-nav__brand:focus-visible {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.45);
}

/* Both logos stacked in one cell; they crossfade with the header's state. */
.site-nav__logo {
    grid-area: 1 / 1;
    display: block;
    height: 26px;
    width: auto;
    transition: opacity 0.3s var(--sc-ease-out);
}

.site-nav__logo--dark,
.site-nav[data-state="solid"] .site-nav__logo--light {
    opacity: 0;
}

.site-nav[data-state="solid"] .site-nav__logo--dark {
    opacity: 1;
}

.site-nav__links {
    display: none;
    align-items: center;
    gap: 6px;
}

.site-nav__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    color: var(--nav-fg-soft);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.005em;
    white-space: nowrap;
    outline: none;
    transition: color 0.2s var(--sc-ease-out), background-color 0.2s var(--sc-ease-out);
}

/* An underline that draws out from the middle on hover and stays under the current page. */
.site-nav__link::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 6px;
    height: 2px;
    border-radius: 2px;
    background: var(--nav-line);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.28s var(--sc-ease-out), background-color 0.3s var(--sc-ease-out);
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
    color: var(--nav-fg);
    background: var(--nav-hover);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after {
    transform: scaleX(1);
}

.site-nav__link[aria-current="page"] {
    color: var(--nav-fg);
    font-weight: 600;
}

.site-nav__link:active {
    transform: scale(0.97);
}

.site-nav__actions {
    display: none;
    align-items: center;
    justify-self: end;
    gap: 10px;
}

.site-nav__actions form {
    display: contents;
}

.site-nav__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    color: var(--nav-fg);
    background: transparent;
    cursor: pointer;
    outline: none;
    transition: background-color 0.2s var(--sc-ease-out), transform 0.2s var(--sc-ease-out), color 0.3s var(--sc-ease-out);
}

.site-nav__icon svg {
    width: 22px;
    height: 22px;
    transition: transform 0.25s var(--sc-ease-out);
}

.site-nav__icon:hover,
.site-nav__icon:focus-visible {
    background: var(--nav-hover);
}

.site-nav__icon:hover svg {
    transform: scale(1.1) rotate(-8deg);
}

.site-nav__icon:active {
    transform: scale(0.92);
}

.site-nav__icon:focus-visible,
.site-nav__btn:focus-visible,
.site-nav__link:focus-visible,
.site-nav__burger:focus-visible {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.45);
}

.site-nav__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 42px;
    padding: 0 22px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    outline: none;
    transition:
        transform 0.2s var(--sc-ease-out),
        box-shadow 0.2s var(--sc-ease-out),
        background-color 0.2s var(--sc-ease-out),
        border-color 0.3s var(--sc-ease-out),
        color 0.3s var(--sc-ease-out);
}

.site-nav__btn:hover {
    transform: translateY(-1px);
}

.site-nav__btn:active {
    transform: translateY(0) scale(0.97);
    transition-duration: 0.09s;
}

/* Outline pill: frosted on the hero, brand-blue once the bar is solid. */
.site-nav__btn--ghost {
    border: 1.5px solid rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.site-nav__btn--ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.45);
}

.site-nav[data-state="solid"] .site-nav__btn--ghost {
    border-color: var(--sc-brand);
    background: rgba(37, 99, 235, 0.06);
    color: var(--sc-brand);
}

.site-nav[data-state="solid"] .site-nav__btn--ghost:hover {
    background: var(--sc-brand);
    color: #ffffff;
    box-shadow: 0 8px 20px -10px rgba(37, 99, 235, 0.65);
}

.site-nav__btn--solid {
    border: 1.5px solid var(--sc-brand);
    background: var(--sc-brand);
    color: #ffffff;
    box-shadow: 0 6px 16px -8px rgba(37, 99, 235, 0.7);
}

.site-nav__btn--solid:hover {
    border-color: var(--sc-brand-ink);
    background: var(--sc-brand-ink);
    box-shadow: 0 12px 24px -10px rgba(37, 99, 235, 0.8);
}

/* ── Phones and tablets: search + menu button, and a drawer ─────────────── */

.site-nav__mobile {
    display: flex;
    align-items: center;
    justify-self: end;
    grid-column: 3;
    gap: 4px;
}

.site-nav__burger {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 999px;
    color: var(--nav-fg);
    cursor: pointer;
    outline: none;
    transition: background-color 0.2s var(--sc-ease-out), color 0.3s var(--sc-ease-out);
}

.site-nav__burger:hover {
    background: var(--nav-hover);
}

.site-nav__burger span {
    position: absolute;
    left: 12px;
    right: 12px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.3s var(--sc-ease-out), opacity 0.2s var(--sc-ease-out);
}

.site-nav__burger span:nth-child(1) { transform: translateY(-7px); }
.site-nav__burger span:nth-child(3) { transform: translateY(7px); }

.site-nav.is-menu-open .site-nav__burger span:nth-child(1) { transform: rotate(45deg); }
.site-nav.is-menu-open .site-nav__burger span:nth-child(2) { opacity: 0; transform: scaleX(0.2); }
.site-nav.is-menu-open .site-nav__burger span:nth-child(3) { transform: rotate(-45deg); }

.site-nav__drawer {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 8px 1rem 20px;
    background: rgba(255, 255, 255, 0.94);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 24px 40px -24px rgba(15, 23, 42, 0.35);
    color: var(--sc-ink);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    visibility: hidden;
    transition:
        opacity 0.25s var(--sc-ease-out),
        transform 0.3s var(--sc-ease-out),
        visibility 0s linear 0.3s;
}

.site-nav.is-menu-open .site-nav__drawer {
    opacity: 1;
    transform: none;
    pointer-events: auto;
    visibility: visible;
    transition:
        opacity 0.25s var(--sc-ease-out),
        transform 0.3s var(--sc-ease-out),
        visibility 0s;
}

.site-nav__drawer-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 6px;
    border-bottom: 1px solid rgba(15, 23, 42, 0.07);
    color: var(--sc-ink-2);
    font-size: 16px;
    font-weight: 500;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.25s var(--sc-ease-out), transform 0.3s var(--sc-ease-out), color 0.2s;
}

.site-nav__drawer-link::after {
    content: '';
    width: 7px;
    height: 7px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: rotate(45deg);
    opacity: 0.45;
    transition: transform 0.2s var(--sc-ease-out), opacity 0.2s;
}

.site-nav__drawer-link:hover,
.site-nav__drawer-link[aria-current="page"] {
    color: var(--sc-brand);
}

.site-nav__drawer-link:hover::after {
    opacity: 1;
    transform: translateX(3px) rotate(45deg);
}

.site-nav__drawer-actions {
    display: grid;
    gap: 10px;
    padding-top: 16px;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.25s var(--sc-ease-out), transform 0.3s var(--sc-ease-out);
}

.site-nav__drawer-actions form {
    display: contents;
}

.site-nav__drawer-actions .site-nav__btn {
    width: 100%;
    height: 46px;
}

/* In the drawer the outline button is always on white. */
.site-nav__drawer .site-nav__btn--ghost {
    border-color: var(--sc-brand);
    background: rgba(37, 99, 235, 0.06);
    color: var(--sc-brand);
}

/* Links follow the drawer down, a beat apart. */
.site-nav.is-menu-open .site-nav__drawer-link,
.site-nav.is-menu-open .site-nav__drawer-actions {
    opacity: 1;
    transform: none;
    transition-delay: calc(60ms + var(--i, 0) * 40ms);
}

@media (min-width: 1024px) {
    .site-nav__links,
    .site-nav__actions {
        display: flex;
    }

    .site-nav__mobile,
    .site-nav__drawer {
        display: none;
    }
}

/* ── Search modal ─────────────────────────────────────────────────────────── */

#search-modal {
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.2s var(--sc-ease-out);
}

#search-modal.is-open {
    opacity: 1;
}

#search-modal > div {
    transform: translateY(-10px) scale(0.98);
    transition: transform 0.3s var(--sc-ease-out);
}

#search-modal.is-open > div {
    transform: none;
}

/* ── Page transitions ────────────────────────────────────────────────────── */

/* Same-origin navigations crossfade: the old page lifts away, the new one rises in, and
   the header (named above) holds still and simply morphs to its new state. */
@view-transition {
    navigation: auto;
}

::view-transition-old(root) {
    animation: sc-page-out 0.16s var(--sc-ease-exit) both;
}

::view-transition-new(root) {
    animation: sc-page-in 0.36s var(--sc-ease-out) both;
}

::view-transition-group(site-nav),
::view-transition-group(site-nav-glass) {
    animation-duration: 0.3s;
    animation-timing-function: var(--sc-ease-out);
}

@keyframes sc-page-out {
    to {
        opacity: 0;
        transform: translateY(-6px);
    }
}

@keyframes sc-page-in {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
}

/* Browsers without cross-document view transitions (the layout sets .no-vt) still get the
   page rising in on arrival. */
.no-vt .site-main {
    animation: sc-page-in 0.4s var(--sc-ease-out) both;
}

/* ── Less motion, when asked for ─────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    ::view-transition-group(*),
    ::view-transition-old(*),
    ::view-transition-new(*) {
        animation: none !important;
    }

    .no-vt .site-main {
        animation: none;
    }

    .site-nav *,
    .site-nav *::before,
    .site-nav *::after,
    .site-nav__glass,
    #search-modal,
    #search-modal > div {
        transition-duration: 0.01ms !important;
        transition-delay: 0s !important;
    }
}

/* ── Photo credits ───────────────────────────────────────────────────────── */

/* The visible credit a CC-licensed stand-in photo asks for (placeholder_credit_html()). */
.photo-credit a {
    color: inherit;
    text-decoration: underline;
    text-decoration-color: rgba(100, 116, 139, 0.45);
    text-underline-offset: 2px;
}

.photo-credit a:hover {
    color: var(--sc-brand-ink);
}