/* ==========================================================================
   BB|PY – layout.css
   Container, Header, Navigation, Abschnitte, Footer.
   Mobile first: Grundregeln für kleine Screens, Erweiterungen per min-width.
   ========================================================================== */

.container {
  width: min(100% - 2 * var(--gutter), var(--width-content));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - 2 * var(--gutter), 52rem);
  margin-inline: auto;
}

.section {
  padding-block: var(--space-2xl);
}

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

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

.section-head {
  display: grid;
  gap: var(--space-s);
  margin-bottom: var(--space-l);
  max-width: var(--width-text);
}

.section-head p {
  color: var(--color-muted);
}

.section-head--split {
  max-width: none;
}

@media (min-width: 52em) {
  .section-head--split {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: color-mix(in srgb, var(--color-background) 92%, transparent);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--duration) var(--ease), border-color var(--duration) var(--ease),
    color var(--duration) var(--ease);
}

@supports (backdrop-filter: blur(8px)) {
  .site-header {
    backdrop-filter: saturate(1.2) blur(10px);
    -webkit-backdrop-filter: saturate(1.2) blur(10px);
  }
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
}

/* Startseite: Header liegt transparent über dem Hero */
.has-hero .site-header {
  position: absolute;
  inset: 0 0 auto;
  background: transparent;
  border-bottom-color: transparent;
  color: var(--color-on-dark);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

html.js .has-hero .site-header {
  position: fixed;
}

html.js .has-hero .site-header.is-scrolled {
  background: color-mix(in srgb, var(--color-background) 92%, transparent);
  border-bottom-color: var(--color-border);
  color: var(--color-text);
}

@supports (backdrop-filter: blur(8px)) {
  html.js .has-hero .site-header.is-scrolled {
    backdrop-filter: saturate(1.2) blur(10px);
    -webkit-backdrop-filter: saturate(1.2) blur(10px);
  }
}

/* ---------- Logo (typografisch, BB|PY mit goldenem Strich) ---------- */
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  min-height: 44px;
  align-items: center;
}

.brand:hover {
  color: inherit;
}

.brand__mark {
  font-family: var(--font-display);
  font-size: 1.7rem;
  line-height: 1;
  letter-spacing: 0.02em;
}

.brand__bar {
  display: inline-block;
  width: 1px;
  height: 0.95em;
  margin-inline: 0.18em;
  background: var(--color-gold);
  vertical-align: -0.1em;
}

.brand__name {
  display: none;
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  opacity: 0.85;
}

@media (min-width: 40em) {
  .brand__name {
    display: inline;
  }
}

/* ---------- Navigation ---------- */
.nav-toggle {
  display: none;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--step--1);
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: none;
  position: relative;
  letter-spacing: 0.02em;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.55rem;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration) var(--ease);
}

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

.site-nav a:hover {
  color: inherit;
}

/* Mobile Navigation (nur mit JavaScript eingeklappt) */
@media (max-width: 55.99em) {
  html.js .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    min-height: 44px;
    min-width: 44px;
    padding: 0 0.25rem;
    background: none;
    border: 0;
    font-size: var(--step--1);
    letter-spacing: 0.02em;
    position: relative;
    z-index: 120;
  }

  .nav-toggle__icon {
    position: relative;
    width: 22px;
    height: 12px;
  }

  .nav-toggle__icon::before,
  .nav-toggle__icon::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: 1.5px;
    background: currentColor;
    transition: transform var(--duration) var(--ease), top var(--duration) var(--ease);
  }

  .nav-toggle__icon::before {
    top: 0;
  }

  .nav-toggle__icon::after {
    top: 10px;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__icon::before {
    top: 5px;
    transform: rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__icon::after {
    top: 5px;
    transform: rotate(-45deg);
  }

  html.js .site-nav {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--header-height) + var(--space-m)) var(--gutter) var(--space-l);
    background: var(--color-background);
    color: var(--color-text);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration) var(--ease), visibility 0s linear var(--duration);
  }

  html.js .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transition: opacity var(--duration) var(--ease), visibility 0s;
  }

  html.js .site-nav__list {
    flex-direction: column;
    gap: 0;
    font-family: var(--font-display);
    font-size: var(--step-3);
  }

  html.js .site-nav__list a {
    min-height: 56px;
  }

  html.js .site-nav__list a::after {
    bottom: 0.6rem;
  }

  .site-nav__secondary {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.5rem;
    margin: var(--space-l) 0 0;
    padding: var(--space-m) 0 0;
    list-style: none;
    border-top: 1px solid var(--color-border);
    font-size: var(--step-0);
    color: var(--color-muted);
  }

  html.js .nav-open .site-header {
    color: var(--color-text);
  }

  body.nav-open {
    overflow: hidden;
  }
}

@media (min-width: 56em) {
  .site-nav__secondary {
    display: none;
  }

  .site-nav__list {
    gap: 0 1.75rem;
  }
}

/* ---------- Seitenkopf der Unterseiten ---------- */
.page-head {
  padding-block: var(--space-xl) var(--space-l);
  border-bottom: 1px solid var(--color-border);
}

.page-head__inner {
  display: grid;
  gap: var(--space-s);
}

.page-head__inner > * {
  max-width: 48rem;
}

.page-head h1 {
  font-size: var(--step-5);
  line-height: 0.95;
}

.page-head p {
  font-size: var(--step-1);
  color: var(--color-muted);
  max-width: var(--width-text);
}

/* Kleine Kontextzeile über Überschriften – Satzschreibung, keine Versalien */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: var(--step--1);
  color: var(--color-gold-text);
  letter-spacing: 0.02em;
}

.kicker::before {
  content: "";
  width: 1px;
  height: 1.1em;
  background: var(--color-gold);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-dark);
  color: var(--color-on-dark);
  padding-block: var(--space-xl) var(--space-l);
  font-size: var(--step--1);
}

.site-footer a {
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-gold-on-dark);
}

.site-footer :focus-visible {
  outline-color: var(--color-on-dark);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-l);
}

@media (min-width: 48em) {
  .site-footer__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  }
}

.site-footer__brand .brand__mark {
  font-size: 2.2rem;
}

.site-footer__brand p {
  margin-top: var(--space-s);
  max-width: 26rem;
  color: #cfc8bb;
}

.site-footer h2 {
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-gold-on-dark);
  margin-bottom: var(--space-s);
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.site-footer li a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
}

.site-footer__bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-m);
  border-top: 1px solid #3a3834;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-s);
  color: #b5ae9f;
}