/* ==========================================================================
   BM GENERALBAU – Layout
   Container, Sektionsrhythmus, Raster, Header, Navigation, Footer.
   Diese Bausteine werden im WordPress-Theme zu header.php / footer.php.
   ========================================================================== */

/* ── Container ─────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-narrow); }
.container--wide   { max-width: 1560px; }

/* ── Sektionen ─────────────────────────────────────────────────────────── */
.section { padding-block: var(--sp-section); }
.section--sm { padding-block: var(--sp-section-sm); }
.section--flush-top { padding-top: 0; }
.section--flush-bottom { padding-bottom: 0; }

/* Flächenvarianten: Tageslicht ↔ monolithisch dunkel */
.section--stone { background: var(--c-stone); }
.section--stone-2 { background: var(--c-stone-2); }
.section--white { background: var(--c-white); }
.section--dark {
  background: var(--c-slate-deep);
  color: var(--c-on-dark-soft);
}
.section--darkest {
  background: var(--c-slate-black);
  color: var(--c-on-dark-soft);
}
.section--dark h1, .section--dark h2, .section--dark h3,
.section--dark h4, .section--dark h5, .section--dark h6,
.section--darkest h1, .section--darkest h2, .section--darkest h3,
.section--darkest h4, .section--darkest h5, .section--darkest h6 {
  color: var(--c-on-dark);
}
.section--dark a:not(.btn), .section--darkest a:not(.btn) { color: var(--c-bronze); }
.section--dark a:not(.btn):hover, .section--darkest a:not(.btn):hover { color: var(--c-gold-light); }

/* ── Sektionskopf ──────────────────────────────────────────────────────── */
.section-head { max-width: 46rem; margin-bottom: var(--sp-2xl); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--wide { max-width: 60rem; }
.section-head > p {
  font-size: var(--fs-lead);
  color: var(--c-ink-soft);
  line-height: 1.6;
}
.section--dark .section-head > p,
.section--darkest .section-head > p { color: var(--c-on-dark-soft); }

/* Blueprint-Label: Großbuchstaben mit Bronze-Hairline (Architekturplan-Optik) */
.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--c-bronze-ink);
}
.eyebrow::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: var(--c-bronze-deep);
  flex: none;
}
.section-head--center .eyebrow { justify-content: center; }
.section--dark .eyebrow, .section--darkest .eyebrow { color: var(--c-bronze); }
.section--dark .eyebrow::before, .section--darkest .eyebrow::before { background: var(--c-bronze); }

/* ── Raster ────────────────────────────────────────────────────────────── */
.grid { display: grid; gap: var(--grid-gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
/* Asymmetrischer 5:7-Split für Bild ↔ Text */
.grid--split { grid-template-columns: 5fr 7fr; align-items: center; gap: clamp(2rem, 4vw, 4.5rem); }
.grid--split-rev { grid-template-columns: 7fr 5fr; align-items: center; gap: clamp(2rem, 4vw, 4.5rem); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }

/* ── Fließtext-Block ───────────────────────────────────────────────────── */
.prose { max-width: 44rem; font-size: var(--fs-body-lg); color: var(--c-ink-soft); }
.prose > * + * { margin-top: var(--sp-md); }
.prose h2 { margin-top: var(--sp-2xl); color: var(--c-slate-deep); }
.prose h3 { margin-top: var(--sp-xl); color: var(--c-slate-deep); }
.prose h2:first-child, .prose h3:first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.15rem; }
.prose li { margin-bottom: var(--sp-xs); }
.prose li::marker { color: var(--c-bronze-deep); }
.prose--wide { max-width: 54rem; }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--c-white);
  border-bottom: var(--hairline) solid var(--c-border);
  transition: height var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled { box-shadow: var(--shadow-card); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-lg);
  height: var(--header-h);
  transition: height var(--dur) var(--ease);
}
.site-header.is-scrolled .header-inner { height: var(--header-h-scroll); }

/* ── Logo ──────────────────────────────────────────────────────────────── */
.brand {
  display: flex;
  align-items: center;
  flex: none;
  text-decoration: none;
  color: inherit;
}
.brand img {
  width: auto;
  height: clamp(42px, 3.4vw, 58px);
  transition: height var(--dur) var(--ease);
}
.site-header.is-scrolled .brand img { height: clamp(34px, 2.6vw, 42px); }

/* ── Hauptnavigation (Desktop) ─────────────────────────────────────────── */
.nav { display: none; }
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.4vw, 1.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-list > li { margin: 0; position: relative; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.6rem 0.25rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-slate-deep);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.nav-link:hover { color: var(--c-bronze-ink); border-bottom-color: var(--c-bronze-deep); }
.nav-link[aria-current="page"],
.nav-item.is-active > .nav-link {
  color: var(--c-bronze-ink);
  border-bottom-color: var(--c-bronze-deep);
  font-weight: 600;
}
.nav-link .caret {
  width: 0.55rem; height: 0.55rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--dur-fast) var(--ease);
}
.nav-item.is-open > .nav-link .caret { transform: rotate(-135deg) translateY(-2px); }

/* ── Dropdown "Leistungen" ─────────────────────────────────────────────── */
.dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  z-index: var(--z-dropdown);
  display: grid;
  grid-template-columns: repeat(2, minmax(13rem, 1fr));
  gap: 0.125rem;
  min-width: 30rem;
  padding: var(--sp-md);
  margin: 0;
  list-style: none;
  background: var(--c-white);
  border: var(--hairline) solid var(--c-border);
  border-top: 2px solid var(--c-bronze-deep);
  box-shadow: var(--shadow-panel);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
              visibility 0s linear var(--dur);
}
.nav-item.is-open > .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;
}
.dropdown li { margin: 0; }
.dropdown a {
  display: block;
  padding: 0.6rem 0.75rem;
  font-size: var(--fs-sm);
  color: var(--c-ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
}
.dropdown a:hover,
.dropdown a:focus-visible {
  background: var(--c-stone-2);
  border-left-color: var(--c-bronze-deep);
  color: var(--c-slate-deep);
}
.dropdown a[aria-current="page"] {
  background: var(--c-stone-2);
  border-left-color: var(--c-bronze-deep);
  font-weight: 600;
}

/* ── Header-Aktionen ───────────────────────────────────────────────────── */
.header-actions { display: flex; align-items: center; gap: var(--sp-sm); flex: none; }
.header-phone {
  display: none;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-slate-deep);
  text-decoration: none;
  white-space: nowrap;
}
.header-phone:hover { color: var(--c-bronze-ink); }
.header-phone svg { width: 1rem; height: 1rem; flex: none; color: var(--c-bronze-deep); }

/* ── Burger ────────────────────────────────────────────────────────────── */
.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: none;
  border: var(--hairline) solid var(--c-border);
  flex: none;
}
.burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--c-slate-deep);
  transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Offcanvas (Mobile) ────────────────────────────────────────────────── */
.offcanvas-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-offcanvas) - 1);
  background: rgba(15, 18, 22, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility 0s linear var(--dur);
}
.offcanvas-backdrop.is-open { opacity: 1; visibility: visible; transition-delay: 0s; }

.offcanvas {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-offcanvas);
  width: min(92vw, 25rem);
  display: flex;
  flex-direction: column;
  background: var(--c-white);
  border-left: 3px solid var(--c-bronze-deep);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--dur-slow) var(--ease), visibility 0s linear var(--dur-slow);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.offcanvas.is-open { transform: translateX(0); visibility: visible; transition-delay: 0s; }

.offcanvas-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: var(--sp-md) var(--sp-lg);
  border-bottom: var(--hairline) solid var(--c-border);
  position: sticky;
  top: 0;
  background: var(--c-white);
  z-index: 1;
}
.offcanvas-head img { height: 34px; width: auto; }
.offcanvas-close {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  background: none;
  border: var(--hairline) solid var(--c-border);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--c-slate-deep);
}
.offcanvas-close:hover { border-color: var(--c-bronze-deep); color: var(--c-bronze-ink); }

.offcanvas-nav { padding: var(--sp-md) var(--sp-lg) var(--sp-xl); }
.offcanvas-nav ul { list-style: none; margin: 0; padding: 0; }
.offcanvas-nav > ul > li { border-bottom: var(--hairline) solid var(--c-border); margin: 0; }
.offcanvas-nav a {
  display: block;
  padding: 0.95rem 0;
  font-family: var(--ff-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--c-slate-deep);
  text-decoration: none;
}
.offcanvas-nav a:hover, .offcanvas-nav a[aria-current="page"] { color: var(--c-bronze-ink); }

/* Ausklappbare Untergruppe im Offcanvas */
.oc-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.95rem 0;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--ff-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--c-slate-deep);
}
.oc-toggle .caret {
  width: 0.6rem; height: 0.6rem;
  border-right: 2px solid var(--c-bronze-deep);
  border-bottom: 2px solid var(--c-bronze-deep);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
  flex: none;
}
.oc-toggle[aria-expanded="true"] .caret { transform: rotate(-135deg); }
.oc-panel { display: none; padding: 0 0 var(--sp-md) var(--sp-md); border-left: 2px solid var(--c-border); margin-bottom: var(--sp-sm); }
.oc-panel.is-open { display: block; }
.oc-panel a { padding: 0.55rem 0; font-family: var(--ff-body); font-size: var(--fs-sm); font-weight: 500; color: var(--c-ink-soft); }
.oc-panel a:hover { color: var(--c-bronze-ink); }

.offcanvas-foot {
  margin-top: auto;
  padding: var(--sp-lg);
  background: var(--c-slate-deep);
  color: var(--c-on-dark-soft);
}
.offcanvas-foot .btn { width: 100%; justify-content: center; }
.offcanvas-foot a[href^="tel:"] {
  display: block;
  margin-top: var(--sp-md);
  font-family: var(--ff-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-bronze);
  text-decoration: none;
  text-align: center;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--c-slate-black);
  color: var(--c-on-dark-soft);
  font-size: var(--fs-sm);
}
.site-footer h2, .site-footer h3 { color: var(--c-white); }

.footer-top {
  display: grid;
  gap: var(--sp-2xl);
  grid-template-columns: 1fr;
  padding-block: var(--sp-3xl) var(--sp-2xl);
}
.footer-logo {
  height: clamp(64px, 6vw, 86px);
  width: auto;
  margin-bottom: var(--sp-md);
}
.footer-claim {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--c-bronze);
  padding-bottom: var(--sp-md);
  border-bottom: var(--hairline) solid var(--c-border-dark);
  margin-bottom: var(--sp-md);
}
.footer-col h2 {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--c-bronze);
  font-family: var(--ff-body);
  margin-bottom: var(--sp-md);
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.55rem; }
.footer-col a {
  color: var(--c-on-dark-soft);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
.footer-col a:hover { color: var(--c-bronze); text-decoration: underline; }

.footer-contact a { font-weight: 600; color: var(--c-white); }
.footer-contact a:hover { color: var(--c-bronze); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding-block: var(--sp-lg);
  border-top: var(--hairline) solid var(--c-border-dark);
  font-size: var(--fs-xs);
  color: var(--c-on-dark-muted);
}
.footer-bottom ul { display: flex; flex-wrap: wrap; gap: var(--sp-lg); list-style: none; margin: 0; padding: 0; }
.footer-bottom li { margin: 0; }
.footer-bottom a { color: var(--c-on-dark-muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--c-bronze); }

/* Platz für die mobile Sticky-Leiste */
@media (max-width: 767px) {
  .site-footer { padding-bottom: var(--mobile-cta-h); }
}

/* ── Firmenlogo in der Kopfzeile ───────────────────────────────────────
   Das Logo ist eine gestapelte Sperrschrift (Bildmarke über Wortmarke).
   Damit die Wortmarke lesbar bleibt, ist die Kopfzeile bewusst höher als
   bei einem liegenden Logo. */
.brand__logo {
  height: clamp(48px, 4.6vw, 72px);
  width: auto;
  flex: none;
  transition: height var(--dur) var(--ease);
}
.site-header.is-scrolled .brand__logo { height: clamp(42px, 3.8vw, 58px); }
.brand--sm .brand__logo { height: 46px; }