@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@500;700&family=Lato:wght@400;700&display=swap');

:root {
    --hauptfarbe: #E67E22;
    --sekundaerfarbe: #D35400;
    --text-dunkel: #2c3e50;
    --text-hell: #7f8c8d;
    --hintergrund-hell: #fdfefe;
    --hintergrund-dunkel: #f7f9f9;
    --weiss: #ffffff;
    --schatten: 0 10px 25px rgba(0, 0, 0, 0.08);
    --schrift-titel: 'Poppins', sans-serif;
    --schrift-text: 'Lato', sans-serif;
    --uebergang: all 0.3s ease-in-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--schrift-text);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dunkel);
    background-color: var(--hintergrund-hell);
}

a {
    text-decoration: none;
    color: var(--hauptfarbe);
    transition: var(--uebergang);
}

a:hover {
    color: var(--sekundaerfarbe);
}

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    font-family: var(--schrift-titel);
    color: var(--text-dunkel);
    font-weight: 700;
    line-height: 1.2;
}

.sektion_ueberschrift {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.sektion_ueberschrift::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--hauptfarbe);
}

.inhalts_sektion {
    padding: 4rem 1rem;
}

.sektion_hintergrund {
    background-color: var(--hintergrund-dunkel);
}

.versteckt {
    display: none !important;
}

.kopfzeile_container {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.navigation_wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    height: 70px;
}

.firmen_logo {
    font-family: var(--schrift-titel);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dunkel);
}

.firmen_logo i {
    color: var(--hauptfarbe);
    margin-right: 0.5rem;
}

.haupt_navigation_liste {
    display: none;
}

.nav_verbindung {
    color: var(--text-dunkel);
    font-weight: 500;
    font-family: var(--schrift-titel);
    padding: 0.5rem 1rem;
    position: relative;
}

.nav_verbindung::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--hauptfarbe);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav_verbindung:hover::after {
    width: 80%;
}

.burger_menu_schalter {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dunkel);
}

.mobile_navigation_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 62, 80, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    z-index: 1100;
}

.mobile_navigation_overlay.aktiv {
    transform: translateX(0);
}

.menu_schliessen_btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--weiss);
    font-size: 2.5rem;
    cursor: pointer;
}

.mobile_navigation_liste a {
    color: var(--weiss);
    font-size: 1.8rem;
    font-family: var(--schrift-titel);
    margin: 1rem 0;
    display: block;
    text-align: center;
}

.held_sektion {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--weiss);
    padding: 1rem;
}

.held_bild_wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.held_bild_wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

.held_bild_wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.held_titel {
    font-size: 2.5rem;
    color: var(--weiss);
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.7);
}

.held_untertitel {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem auto;
    font-weight: 400;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.7);
}

.aktions_aufruf_knopf {
    display: inline-block;
    background-color: var(--hauptfarbe);
    color: var(--weiss);
    padding: 0 2rem;
    min-height: 50px;
    line-height: 50px;
    border-radius: 25px;
    font-weight: 700;
    font-family: var(--schrift-titel);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--uebergang);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.aktions_aufruf_knopf:hover {
    background-color: var(--sekundaerfarbe);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    color: var(--weiss);
}

.karten_gitter {
    display: grid;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.kompetenz_karte {
    background-color: var(--weiss);
    border-radius: 8px;
    text-align: center;
    perspective: 1000px;
    min-height: 300px;
}

.kompetenz_karte .karte_vorne,
.kompetenz_karte .karte_hinten {
    padding: 2rem;
    width: 100%;
    height: 100%;
    position: absolute;
    backface-visibility: hidden;
    transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    box-shadow: var(--schatten);
}

.kompetenz_karte .karte_vorne {
    background: var(--weiss);
}

.kompetenz_karte .karte_hinten {
    background: var(--hintergrund-dunkel);
    transform: rotateY(180deg);
}

.kompetenz_karte:hover > div,
.kompetenz_karte:focus-within > div {
    transform: rotateY(180deg);
}

.kompetenz_karte:focus-within .karte_hinten {
    transform: rotateY(0);
}

.kompetenz_karte .karte_vorne i {
    font-size: 3rem;
    color: var(--hauptfarbe);
    margin-bottom: 1rem;
}

.kompetenz_karte h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}
.kompetenz_karte h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: var(--hauptfarbe);
}

.kompetenz_karte p {
    color: var(--text-hell);
}

.projekt_gitter {
    display: grid;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.projekt_item {
    background-color: var(--weiss);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--schatten);
    transition: var(--uebergang);
}

.projekt_item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.projekt_bild {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.projekt_info {
    padding: 1.5rem;
}

.projekt_info h3 {
    margin-bottom: 0.5rem;
}

.nachhaltigkeit_inhalt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.nachhaltigkeit_bild {
    width: 100%;
    max-width: 500px;
    border-radius: 8px;
    box-shadow: var(--schatten);
}

.nachhaltigkeit_text {
    text-align: left;
}

.kontakt_formular {
    max-width: 700px;
    margin: 0 auto;
}

.formular_gruppe {
    margin-bottom: 1.5rem;
}

.formular_label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.formular_eingabe,
.formular_textbereich {
    width: 100%;
    min-height: 48px;
    padding: 0.75rem 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: var(--schrift-text);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.formular_eingabe:focus,
.formular_textbereich:focus {
    outline: none;
    border-color: var(--hauptfarbe);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.2);
}

.formular_eingabe:invalid:not(:placeholder-shown),
.formular_textbereich:invalid:not(:placeholder-shown) {
    border-color: #e74c3c;
}

.formular_absenden_knopf {
    width: 100%;
    min-height: 50px;
    border: none;
    background-color: var(--hauptfarbe);
    color: var(--weiss);
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--schrift-titel);
    cursor: pointer;
    border-radius: 25px;
    transition: var(--uebergang);
}

.formular_absenden_knopf:hover {
    background-color: var(--sekundaerfarbe);
}

.fusszeile_container {
    background-color: var(--text-dunkel);
    color: #bdc3c7;
    padding-top: 4rem;
}

.fusszeile_hauptbereich {
    display: grid;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.fusszeile_spalte h4 {
    color: var(--weiss);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.fusszeile_spalte p {
    margin-bottom: 1rem;
}

.soziale_medien_links a {
    color: #bdc3c7;
    font-size: 1.2rem;
    margin-right: 1rem;
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border: 1px solid #bdc3c7;
    border-radius: 50%;
}

.soziale_medien_links a:hover {
    color: var(--weiss);
    background-color: var(--hauptfarbe);
    border-color: var(--hauptfarbe);
}

.fusszeile_link_liste a {
    color: #bdc3c7;
    display: block;
    margin-bottom: 0.5rem;
}

.fusszeile_unterbereich {
    border-top: 1px solid #34495e;
    margin-top: 2rem;
    padding: 1.5rem 1rem;
    text-align: center;
    font-size: 0.9rem;
}

.richtlinien_links {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1.5rem;
}

.richtlinien_links a {
    color: #bdc3c7;
    text-decoration: underline;
}

.modal_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal_overlay.aktiv {
    opacity: 1;
    visibility: visible;
}

.modal_fenster {
    background-color: var(--weiss);
    padding: 2rem;
    border-radius: 8px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.modal_overlay.aktiv .modal_fenster {
    transform: scale(1);
}

.modal_schliessen {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-hell);
}

.modal_fenster h3 {
    margin-top: 0;
    margin-bottom: 1rem;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(44, 62, 80, 0.95);
    color: var(--weiss);
    padding: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.5s ease-in-out;
}

.cookie-banner.aktiv {
    transform: translateY(0);
}

.cookie-banner p {
    margin: 0;
}

.cookie_aktionen {
    display: flex;
    gap: 1rem;
}

.cookie-banner button {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--schrift-titel);
    font-weight: 500;
}

#cookie-accept {
    background-color: var(--hauptfarbe);
    color: var(--weiss);
}

#cookie-decline {
    background-color: transparent;
    color: var(--weiss);
    border: 1px solid var(--weiss);
}

@media (min-width: 576px) {
    .held_titel {
        font-size: 3rem;
    }
    .cookie-banner {
        flex-direction: row;
        justify-content: space-between;
        padding: 1rem 2rem;
        text-align: left;
    }
}

@media (min-width: 768px) {
    .burger_menu_schalter {
        display: none;
    }

    .haupt_navigation_liste {
        display: flex;
        gap: 0.5rem;
    }
    
    .karten_gitter {
        grid-template-columns: repeat(2, 1fr);
    }
    .kompetenz_karte {
        min-height: 280px;
    }
    .projekt_gitter {
        grid-template-columns: repeat(2, 1fr);
    }
    .nachhaltigkeit_inhalt {
        flex-direction: row;
        text-align: left;
    }
    .nachhaltigkeit_text {
        flex: 1;
    }
    .nachhaltigkeit_bild {
        flex: 0 0 45%;
    }
    .formular_absenden_knopf {
        width: auto;
        padding: 0 3rem;
    }
    .fusszeile_hauptbereich {
        grid-template-columns: repeat(2, 1fr);
    }
    .fusszeile_unterbereich {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
    .richtlinien_links {
        margin-top: 0;
    }
}

@media (min-width: 1024px) {
    .held_titel {
        font-size: 4rem;
    }
    .held_untertitel {
        font-size: 1.5rem;
    }
    .karten_gitter {
        grid-template-columns: repeat(3, 1fr);
    }
     .fusszeile_hauptbereich {
        grid-template-columns: 2fr 1fr 1fr;
    }
}