/* ==========================================================================
   Page frame: containers, sections, header, navigation, footer.
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.container--narrow { max-width: var(--container-narrow); }
.container--wide { max-width: var(--container-wide); }

/* Vertical rhythm between page sections. */
.section {
    padding-block: var(--section-gap);
}

.section--tight {
    padding-block: calc(var(--section-gap) * 0.55);
}

/* Alternating band, used to separate adjacent sections without a rule. */
.section--sand {
    background-color: var(--color-sand-deep);
}

.section--ink {
    background-color: var(--color-ink);
    color: var(--color-sand);
}

.section--ink h2,
.section--ink h3 {
    color: var(--color-sand);
}

/* A small tracked-out label above a heading ("Ausstattung", "Die Gegend"). */
.eyebrow {
    display: block;
    margin-bottom: var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-terracotta);
}

.section--ink .eyebrow {
    color: var(--color-terracotta-light);
}

.section-header {
    max-width: 40rem;
    margin-bottom: var(--space-12);
}

.section-header--centered {
    margin-inline: auto;
    text-align: center;
}

.lead {
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--color-ink-soft);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    border-bottom: 1px solid transparent;
    transition: border-color var(--duration) var(--ease-out),
                box-shadow var(--duration) var(--ease-out);
}

/* The frosted glass sits on a pseudo-element, not on the header itself, and that is not
   cosmetic tidiness. An element with `backdrop-filter` becomes the containing block for
   every `position: fixed` descendant — and the mobile navigation drawer lives inside this
   header. With the filter on the header, the drawer's `inset: header-height 0 0 auto`
   resolved against a 73px-tall box instead of the screen: it came out 64px high with 740px
   of links inside it, so a phone showed a sliver with one and a half menu entries.
   On the pseudo-element the effect looks identical and traps nothing. */
.site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background-color: rgb(250 246 240 / 0.88);
    backdrop-filter: blur(12px) saturate(1.4);
}

@supports not (backdrop-filter: blur(1px)) {
    .site-header::before { background-color: var(--color-sand); }
}

/* Toggled by header.js once the page is scrolled away from the top. */
.site-header.is-scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    min-height: var(--header-height);
}

.site-brand {
    display: inline-flex;
    flex-direction: column;
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    letter-spacing: var(--tracking-wide);
    line-height: 1;
    color: var(--color-ink);
    text-decoration: none;
}

.site-brand__mark {
    text-transform: lowercase;
}

.site-brand__tagline {
    margin-top: 2px;
    font-family: var(--font-body);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-ink-muted);
}

/* --- Primary navigation -------------------------------------------------- */

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav__list li + li {
    margin-top: 0;
}

.site-nav__link {
    display: block;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-ink-soft);
    text-decoration: none;
    white-space: nowrap;
    transition: background-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.site-nav__link:hover {
    background-color: rgb(180 85 45 / 0.08);
    color: var(--color-terracotta-dark);
}

.site-nav__link[aria-current='page'] {
    color: var(--color-terracotta);
    background-color: var(--color-terracotta-tint);
}

/* --- Language switcher --------------------------------------------------- */

.lang-switch {
    position: relative;
}

.lang-switch__toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-out);
}

.lang-switch__toggle:hover {
    border-color: var(--color-border-strong);
}

.lang-switch__code {
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

.lang-switch__chevron {
    width: 0.6rem;
    transition: transform var(--duration-fast) var(--ease-out);
}

.lang-switch__toggle[aria-expanded='true'] .lang-switch__chevron {
    transform: rotate(180deg);
}

.lang-switch__menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 11rem;
    margin: 0;
    padding: var(--space-2);
    list-style: none;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.lang-switch__menu[hidden] {
    display: none;
}

.lang-switch__menu li + li {
    margin-top: 2px;
}

.lang-switch__item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    color: var(--color-ink);
    text-decoration: none;
}

.lang-switch__item:hover {
    background-color: var(--color-sand-deep);
}

.lang-switch__item[aria-current='true'] {
    font-weight: 600;
    color: var(--color-terracotta);
}

/* --- Mobile drawer ------------------------------------------------------- */

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
    display: block;
    width: 1.15rem;
    height: 1.5px;
    background-color: var(--color-ink);
    transition: transform var(--duration) var(--ease-out),
                opacity var(--duration-fast) var(--ease-out);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
    content: '';
    position: absolute;
}

.nav-toggle__bars::before { transform: translateY(-6px); }
.nav-toggle__bars::after { transform: translateY(6px); }

.nav-toggle[aria-expanded='true'] .nav-toggle__bars {
    background-color: transparent;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bars::before {
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bars::after {
    transform: rotate(-45deg);
}

@media (max-width: 62rem) {
    .nav-toggle {
        display: inline-flex;
        position: relative;
    }

    /* Off-canvas panel. Kept in the DOM and translated out of view so the
       transition works; `visibility` keeps it out of the tab order when closed. */
    .site-nav {
        position: fixed;
        inset: var(--header-height) 0 0 auto;
        width: min(22rem, 86vw);
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-6);
        padding: var(--space-8) var(--space-6);
        /* Reicht der Platz trotzdem nicht — kleines Telefon, große Schrift —, scrollt die
           Schublade in sich selbst. `contain` verhindert, dass das Scrollen am Ende auf die
           Seite dahinter überspringt. */
        overflow-y: auto;
        overscroll-behavior: contain;
        background-color: var(--color-surface-raised);
        border-left: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        transform: translateX(100%);
        visibility: hidden;
        transition: transform var(--duration) var(--ease-out),
                    visibility var(--duration);
        z-index: var(--z-drawer);
    }

    .site-nav.is-open {
        transform: translateX(0);
        visibility: visible;
    }

    .site-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-1);
    }

    .site-nav__link {
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-base);
    }

    /* In der Schublade klappt die Sprachauswahl nach oben auf statt nach unten. Sie sitzt
       dort knapp über dem Anfrage-Knopf am unteren Rand; nach unten aufgeklappt stünde
       die Liste ausserhalb der Schublade und würde von deren overflow abgeschnitten.

       Die Auswahl bleibt ein Aufklappmenü und wird nicht ausgeklappt dargestellt: vier
       Einträge am Stück kosten rund 220px, und die fehlen auf einem kleinen Telefon
       genau dort, wo der Anfrage-Knopf hingehört. */
    .lang-switch {
        align-self: flex-start;
    }

    .lang-switch__menu {
        top: auto;
        bottom: calc(100% + var(--space-2));
        left: 0;
        right: auto;
    }
}

/* Dims the page behind the open drawer and closes it on tap. */
.nav-scrim {
    position: fixed;
    inset: 0;
    z-index: var(--z-scrim);
    background-color: rgb(43 38 34 / 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration) var(--ease-out), visibility var(--duration);
}

.nav-scrim.is-visible {
    opacity: 1;
    visibility: visible;
}

/* Locked while the drawer or the lightbox is open, so the page behind cannot scroll.
   Both wwwroot/js/site.js and wwwroot/js/lightbox.js set this class on the body.

   The lock has to sit on <html>, and that is not a matter of taste. A browser normally
   takes the *body's* overflow and applies it to the viewport — but only as long as the
   root element's own overflow is `visible`. Since base.css gives html `overflow-x: clip`
   (to stop the parked drawer adding 320px of scrollable emptiness), that no longer
   holds: the body's `overflow: hidden` would then clip the body box and leave the page
   behind merrily scrolling, with the sticky header breaking loose on the way.

   And the lock must sit on html *only*. The same rule on the body looks harmless but turns
   the body into a scroll container — and a `position: sticky` element sticks inside its
   nearest scrolling ancestor. The header then clung to a box that never scrolls, so with
   the page scrolled halfway down, opening the menu made the header jump to the top of the
   document and out of sight. */
html:has(> body.has-drawer-open) {
    overflow: hidden;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    margin-top: var(--section-gap);
    padding-block: var(--space-16) var(--space-8);
    background-color: var(--color-ink);
    color: var(--color-sand-deep);
    font-size: var(--text-sm);
}

.site-footer a {
    color: var(--color-sand);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--color-terracotta-light);
    text-decoration: underline;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
    gap: var(--space-10);
    padding-bottom: var(--space-10);
    border-bottom: 1px solid rgb(250 246 240 / 0.14);
}

.site-footer__heading {
    margin-bottom: var(--space-4);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-ink-faint);
}

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

.site-footer__list li + li {
    margin-top: var(--space-2);
}

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding-top: var(--space-6);
    color: var(--color-ink-faint);
}

.site-footer__bottom-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-5);
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-footer__bottom-links li + li {
    margin-top: 0;
}