/* =================================================================
   B BAU Bauprofis – Hauptstylesheet
   Farbwelt nach Firmenlogo: Gelb #F5B916 auf Anthrazit/Schwarz
   ================================================================= */

:root {
    --bbau-gelb: #F5B916;
    --bbau-gelb-dunkel: #d9a20c;
    --bbau-schwarz: #141414;
    --bbau-anthrazit: #1f2124;
    --bbau-grau: #6b6f76;
    --bbau-hellgrau: #f4f5f7;
    --bbau-weiss: #ffffff;
    --bbau-radius: 4px;
}

body {
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    color: var(--bbau-anthrazit);
    background-color: var(--bbau-weiss);
}

h1, h2, h3,
.navbar-brand {
    font-family: "Barlow Condensed", "Arial Narrow", Arial, sans-serif;
    letter-spacing: 0.5px;
}

a {
    color: var(--bbau-anthrazit);
}

a:hover {
    color: var(--bbau-gelb-dunkel);
}

/* ------------------------------- Buttons ------------------------- */

.btn-bbau,
.btn-bbau:focus {
    background-color: var(--bbau-gelb);
    border: 2px solid var(--bbau-gelb);
    color: var(--bbau-schwarz);
    font-weight: 700;
    border-radius: var(--bbau-radius);
}

.btn-bbau:hover {
    background-color: var(--bbau-gelb-dunkel);
    border-color: var(--bbau-gelb-dunkel);
    color: var(--bbau-schwarz);
}

.btn-bbau-outline {
    background-color: transparent;
    border: 2px solid var(--bbau-weiss);
    color: var(--bbau-weiss);
    font-weight: 700;
    border-radius: var(--bbau-radius);
}

.btn-bbau-outline:hover {
    background-color: var(--bbau-weiss);
    color: var(--bbau-schwarz);
}

.btn-dunkel {
    background-color: var(--bbau-schwarz);
    border: 2px solid var(--bbau-schwarz);
    color: var(--bbau-gelb);
    font-weight: 700;
    border-radius: var(--bbau-radius);
}

.btn-dunkel:hover {
    background-color: #000;
    color: var(--bbau-gelb);
}

.btn-dunkel-outline {
    background-color: transparent;
    border: 2px solid var(--bbau-schwarz);
    color: var(--bbau-schwarz);
    font-weight: 700;
    border-radius: var(--bbau-radius);
}

.btn-dunkel-outline:hover {
    background-color: var(--bbau-schwarz);
    color: var(--bbau-gelb);
}

/* ------------------------------ Navbar --------------------------- */

.bbau-navbar {
    background-color: rgba(20, 20, 20, 0.95);
    backdrop-filter: blur(6px);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.bbau-navbar .nav-link {
    color: var(--bbau-weiss);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.bbau-navbar .nav-link:hover,
.bbau-navbar .nav-link:focus {
    color: var(--bbau-gelb);
}

.bbau-navbar .navbar-brand img {
    display: block;
}

/* ------------------------------- Hero ---------------------------- */

.hero {
    position: relative;
    min-height: 78vh;
    display: flex;
    align-items: center;
    padding: 9rem 0 5rem;
    color: var(--bbau-weiss);
    background:
        linear-gradient(115deg, rgba(20, 20, 20, 0.94) 0%, rgba(20, 20, 20, 0.72) 55%, rgba(31, 33, 36, 0.6) 100%),
        repeating-linear-gradient(135deg, #2a2c30 0 22px, #232529 22px 44px);
}

.hero::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 8px;
    background: var(--bbau-gelb);
}

.hero__inhalt {
    max-width: 42rem;
}

.hero__kicker {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--bbau-gelb);
    margin-bottom: 1rem;
}

.hero__titel {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 700;
    line-height: 1.05;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.hervorgehoben {
    color: var(--bbau-gelb);
}

.hero__text {
    font-size: 1.1rem;
    color: #dcdde0;
    margin-bottom: 2rem;
}

.hero__aktionen {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
}

/* --------------------------- Slogan-Band ------------------------- */

.band-slogans {
    background-color: var(--bbau-gelb);
    color: var(--bbau-schwarz);
    padding: 3.5rem 0;
}

.band-slogans__icon {
    font-size: 2.4rem;
    display: block;
    margin-bottom: 0.6rem;
}

.band-slogans__titel {
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.band-slogans p {
    margin-bottom: 0;
    font-size: 0.98rem;
}

/* ---------------------------- Abschnitte ------------------------- */

.abschnitt {
    padding: 5rem 0;
}

.abschnitt--dunkel {
    background-color: var(--bbau-anthrazit);
    color: var(--bbau-weiss);
}

.abschnitt__kicker {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--bbau-gelb-dunkel);
    margin-bottom: 0.5rem;
}

.abschnitt--dunkel .abschnitt__kicker {
    color: var(--bbau-gelb);
}

.abschnitt__titel {
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.abschnitt__titel::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 68px;
    height: 5px;
    background: var(--bbau-gelb);
}

.abschnitt__einleitung {
    max-width: 52rem;
    color: var(--bbau-grau);
}

.abschnitt--dunkel .abschnitt__einleitung {
    color: #c7c9cd;
}

/* ---------------------------- Leistungen ------------------------- */

.leistung {
    height: 100%;
    background-color: var(--bbau-hellgrau);
    border-left: 5px solid var(--bbau-gelb);
    padding: 1.75rem 1.5rem;
    border-radius: var(--bbau-radius);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.leistung:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.12);
}

.leistung__icon {
    font-size: 2rem;
    color: var(--bbau-gelb-dunkel);
    display: block;
    margin-bottom: 0.75rem;
}

.leistung h3 {
    font-size: 1.35rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.leistung p {
    margin-bottom: 0;
    color: var(--bbau-grau);
    font-size: 0.97rem;
}

.leistung__hinweis {
    margin-top: 2.5rem;
    padding: 1rem 1.25rem;
    background-color: #fff8e4;
    border: 1px solid #f0dfae;
    border-radius: var(--bbau-radius);
    font-size: 0.92rem;
    color: #6a5a2a;
}

/* ------------------------- Referenz-Galerie ---------------------- */

.album-karte {
    background-color: #2a2d31;
    border-radius: var(--bbau-radius);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}

.album-karte:hover,
.album-karte:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.45);
    outline: 2px solid var(--bbau-gelb);
}

.album-karte__bild {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: #1a1c1f;
}

.album-karte__bild img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.album-karte:hover .album-karte__bild img {
    transform: scale(1.05);
}

.album-karte__anzahl {
    position: absolute;
    right: 0.6rem;
    bottom: 0.6rem;
    background-color: var(--bbau-gelb);
    color: var(--bbau-schwarz);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.15rem 0.55rem;
    border-radius: var(--bbau-radius);
}

.album-karte__text {
    padding: 1rem 1.1rem 1.25rem;
}

.album-karte__text h3 {
    font-size: 1.3rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--bbau-weiss);
    margin-bottom: 0.25rem;
}

.album-karte__text p {
    font-size: 0.9rem;
    color: #b6b9be;
    margin-bottom: 0;
}

.galerie-hinweis {
    color: #c7c9cd;
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 0;
}

/* ----------------------------- Lightbox -------------------------- */

.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    background-color: rgba(0, 0, 0, 0.93);
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.lightbox.ist-offen {
    display: flex;
}

.lightbox__figur {
    max-width: min(1100px, 92vw);
    max-height: 88vh;
    margin: 0;
    text-align: center;
}

.lightbox__bild {
    max-width: 100%;
    max-height: 78vh;
    object-fit: contain;
    border-radius: var(--bbau-radius);
}

.lightbox__figur figcaption {
    margin-top: 0.75rem;
    color: var(--bbau-weiss);
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: baseline;
    flex-wrap: wrap;
}

.lightbox__titel {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.lightbox__zaehler {
    color: var(--bbau-gelb);
    font-size: 0.9rem;
}

.lightbox__schliessen,
.lightbox__nav {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--bbau-weiss);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.lightbox__schliessen:hover,
.lightbox__nav:hover {
    background-color: var(--bbau-gelb);
    color: var(--bbau-schwarz);
}

.lightbox__schliessen {
    top: 1.25rem;
    right: 1.25rem;
}

.lightbox__zurueck {
    left: 1.25rem;
}

.lightbox__weiter {
    right: 1.25rem;
}

/* ------------------------------ Über uns ------------------------- */

.vorteile {
    list-style: none;
    padding-left: 0;
    margin-top: 1.5rem;
}

.vorteile li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    margin-bottom: 0.6rem;
    font-weight: 500;
}

.vorteile i {
    color: var(--bbau-gelb-dunkel);
    font-size: 1.2rem;
    line-height: 1.35;
}

.zitat {
    background-color: var(--bbau-schwarz);
    color: var(--bbau-weiss);
    border-left: 8px solid var(--bbau-gelb);
    padding: 2.5rem 2rem;
    border-radius: var(--bbau-radius);
    margin: 0;
}

.zitat p {
    font-family: "Barlow Condensed", Arial, sans-serif;
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    line-height: 1.25;
    margin-bottom: 1rem;
}

.zitat footer {
    color: var(--bbau-gelb);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ------------------------------- CTA ----------------------------- */

.cta-band {
    background-color: var(--bbau-gelb);
    color: var(--bbau-schwarz);
    padding: 4rem 0;
}

.cta-band h2 {
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    font-weight: 700;
    text-transform: uppercase;
}

.cta-band p {
    margin-bottom: 1.75rem;
}

/* ----------------------------- Fußzeile -------------------------- */

.fusszeile {
    background-color: var(--bbau-schwarz);
    color: #d3d5d8;
    padding: 4rem 0 2rem;
}

.fusszeile__logo {
    height: 52px;
    margin-bottom: 1.5rem;
}

.fusszeile__titel {
    font-size: 1.6rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--bbau-weiss);
    margin-bottom: 1rem;
}

.fusszeile b {
    color: var(--bbau-gelb);
    font-weight: 700;
}

.fusszeile a {
    color: #d3d5d8;
    text-decoration: none;
}

.fusszeile a:hover {
    color: var(--bbau-gelb);
    text-decoration: underline;
}

.fusszeile__linie {
    border-top: 2px solid #333;
    opacity: 1;
    margin: 2.5rem 0 1.5rem;
}

.fusszeile__menue li {
    margin-right: 1rem;
}

.karte {
    height: 100%;
    min-height: 320px;
    border: 4px solid var(--bbau-gelb);
    border-radius: var(--bbau-radius);
    overflow: hidden;
}

.karte iframe {
    width: 100%;
    height: 100%;
    min-height: 320px;
    display: block;
}

/* --------------------------- Rechtstexte ------------------------- */

.rechtstext {
    padding: 8rem 0 4rem;
}

.rechtstext h1 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.rechtstext h2 {
    font-size: 1.4rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.rechtstext p,
.rechtstext li {
    color: #4a4d52;
}

/* -------------------------- Einblend-Effekt ---------------------- */

.einblenden {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.einblenden.sichtbar {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .einblenden,
    .einblenden.sichtbar {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ----------------------------- Mobil ----------------------------- */

@media (max-width: 991.98px) {
    .bbau-navbar .navbar-nav {
        padding-top: 0.75rem;
        gap: 0.25rem;
    }

    .bbau-navbar .nav-item.ms-lg-3 {
        margin-top: 0.5rem;
    }

    .hero {
        min-height: auto;
        padding: 7.5rem 0 4rem;
    }

    .lightbox__nav {
        width: 42px;
        height: 42px;
    }

    .lightbox__zurueck {
        left: 0.5rem;
    }

    .lightbox__weiter {
        right: 0.5rem;
    }
}