/* === Globale Stile & Variablen === */
:root {
    --primary-color: #003366; /* Dunkelblau */
    --secondary-color: #f4f4f4; /* Helles Grau */
    --accent-color: #4CAF50; /* Grün für Akzente (Nachhaltigkeit) */
    --text-color: #333;
    --heading-font: 'Montserrat', sans-serif;
    --body-font: 'Montserrat', sans-serif;
    --container-width: 1100px;
    --section-padding: 60px 0;
}

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

html {
    scroll-behavior: smooth; /* Ermöglicht sanftes Scrollen */
}

body {
    font-family: var(--body-font);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-family: var(--heading-font);
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
}

h1 { font-size: 2.8em; }
h2 { font-size: 2.2em; text-align: center;}
h3 { font-size: 1.5em; }

p {
    margin-bottom: 15px;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

.bg-light {
    background-color: var(--secondary-color);
}

.content-section {
    padding: var(--section-padding);
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: #fff;
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    font-size: 1.1em;
    font-weight: bold;
    text-decoration: none;
    transition: background-color 0.3s ease;
    cursor: pointer;
    text-align: center;
}

.cta-button:hover {
    background-color: #45a049; /* Etwas dunkleres Grün */
    text-decoration: none;
}

.center-text { text-align: center; }
.bold-text { font-weight: bold; }

/* === Navigation === */
.main-nav {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 10px 0;
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    height: 40px; /* Höhe anpassen */
    width: auto;
}

.main-nav ul {
    list-style: none;
    display: flex;
}

.main-nav ul li {
    margin-left: 25px;
}

.main-nav ul li a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    padding: 5px 0;
    transition: color 0.3s ease;
}

.main-nav ul li a:hover,
.main-nav ul li a.active { /* Optional: Aktiven Link hervorheben */
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

/* === Hero Sektion === */
.hero-section {
    background: linear-gradient(rgba(0, 51, 102, 0.7), rgba(0, 51, 102, 0.7)), /* Overlay */
                url('hero.png') no-repeat center center/cover; /* Hintergrundbild */
    min-height: 80vh; /* Mindesthöhe */
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    padding: 100px 20px; /* Mehr Padding oben/unten */
}

.hero-content h1 {
    color: #fff;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 1.2em;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-logo {
    max-width: 250px; /* Größeres Logo im Hero */
    margin-bottom: 30px;
}

/* === Sektion: Leistungen === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive Grid */
    gap: 30px;
    margin-top: 40px;
    margin-bottom: 30px; /* Abstand zum Satz darunter */
}

.service-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.service-icon {
    color: var(--accent-color);
    margin-bottom: 15px;
}

.service-item h3 {
    margin-top: 10px;
}

/* === Sektion: Vorteile === */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 15px; /* Abstand zwischen Icon und Text */
}

.advantage-item i {
    color: var(--accent-color);
    font-size: 1.5em;
}

.advantage-item p {
    margin-bottom: 0; /* Standard-Margin von P entfernen */
}

/* === Sektion: Projekte === */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 40px;
    margin-bottom: 20px;
}

.project-item img {
    display: block;
    width: 100%;
    height: 200px; /* Feste Höhe für Konsistenz */
    object-fit: cover; /* Bild zuschneiden, um Container zu füllen */
    border-radius: 5px 5px 0 0;
}

.project-item figcaption {
    background-color: #fff;
    padding: 15px;
    text-align: center;
    font-weight: bold;
    border-radius: 0 0 5px 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

/* === Sektion: Kontakt === */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Zwei Spalten */
    gap: 40px;
    align-items: flex-start; /* Oben ausrichten */
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.contact-info i {
    color: var(--primary-color);
    width: 20px; /* Feste Breite für Ausrichtung */
    text-align: center;
}

.contact-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"],
.contact-form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: inherit; /* Schriftart übernehmen */
}

.contact-form textarea {
    resize: vertical; /* Nur vertikale Größenänderung erlauben */
}

.contact-form button {
    width: 100%; /* Button über volle Breite */
}

/* === Footer === */
.main-footer {
    background-color: var(--primary-color);
    color: #fff;
    padding: 20px 0;
    margin-top: 40px; /* Etwas Abstand nach oben */
    text-align: center;
}

.main-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* Umbruch bei wenig Platz */
}

.main-footer p {
    margin-bottom: 0;
}

.main-footer ul {
    list-style: none;
    display: flex;
}

.main-footer ul li {
    margin-left: 15px;
}

.main-footer a {
    color: #fff;
}

.main-footer a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* === Responsive Design === */
@media (max-width: 992px) {
    h1 { font-size: 2.5em; }
    h2 { font-size: 2em; }

    .hero-section { min-height: 70vh; }
}

@media (max-width: 768px) {
    h1 { font-size: 2.2em; }
    h2 { font-size: 1.8em; }

    .main-nav .container {
        flex-direction: column;
        align-items: center;
    }
    .main-nav ul {
        margin-top: 10px;
        flex-wrap: wrap; /* Menüpunkte umbrechen lassen */
        justify-content: center;
    }
    .main-nav ul li {
        margin: 5px 10px; /* Kleinerer Abstand */
    }

    .hero-section { min-height: 60vh; }
    .hero-content p { font-size: 1.1em; }
    .hero-logo { max-width: 200px; }


    .contact-container {
        grid-template-columns: 1fr; /* Eine Spalte auf Tablets/Mobil */
        gap: 30px;
    }

    .main-footer .container {
        flex-direction: column;
        gap: 10px;
    }
     .main-footer ul {
        justify-content: center; /* Links im Footer zentrieren */
    }
    .main-footer ul li {
        margin: 0 7px; /* Kleinerer Abstand */
    }
}

@media (max-width: 576px) {
    h1 { font-size: 2em; }
    .hero-section { padding: 60px 15px; min-height: 50vh;}
    .hero-content p { font-size: 1em; }
    .hero-logo { max-width: 180px; }

    .services-grid, .advantages-grid, .projects-grid {
        grid-template-columns: 1fr; /* Alles untereinander */
    }

    .cta-button { padding: 10px 20px; font-size: 1em; }
}