/* --- BASIS-SETUP & VARIABLEN --- */
:root {
    --bg-color: #fcfcfc;
    --text-color: #2c3e50;
    --accent-color: #1a365d;
    --light-gray: #f4f6f8;
    --white: #ffffff;
    --max-width: 1140px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

/* --- HEADER & NAVIGATION --- */
.main-header {
    background: var(--white);
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo span {
    font-weight: 300;
    color: var(--accent-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.main-nav a:hover {
    color: var(--accent-color);
}

.nav-toggle { display: none; }

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        border-bottom: 1px solid #eee;
        padding: 20px;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 15px;
    }
    .nav-toggle:checked ~ .main-nav {
        display: block;
    }
    .nav-toggle-label {
        cursor: pointer;
        padding: 10px;
    }
    .nav-toggle-label span, .nav-toggle-label span::before, .nav-toggle-label span::after {
        display: block;
        background: var(--text-color);
        height: 2px;
        width: 25px;
        position: relative;
    }
    .nav-toggle-label span::before { content: ''; top: -8px; left: 0; position: absolute; }
    .nav-toggle-label span::after { content: ''; bottom: -8px; left: 0; position: absolute; }
}

/* --- SEITEN-CONTAINER & STRUKTUR --- */
.hero {
    background: var(--light-gray);
    padding: 60px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 2.3rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 20px auto;
}

.section-container {
    max-width: var(--max-width);
    margin: 40px auto;
    padding: 0 20px;
}

.section-container h1, .section-container h2 {
    color: var(--accent-color);
    margin-bottom: 15px;
}

/* Flexibles Grid für Leistungen */
.grid-3 {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    flex: 1 1 calc(33.333% - 20px);
    min-width: 280px;
    display: flex;
    flex-direction: column;
}

.card h3 {
    margin-bottom: 12px;
    color: var(--accent-color);
}

.card p {
    flex-grow: 1;
    margin-bottom: 25px;
}

/* --- LAYOUT FÜR KONTAKTSEITE --- */
.kontakt-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: start;
    margin-top: 30px;
}

.kontakt-info-spalte {
    flex: 1 1 40%;
    min-width: 300px;
}

.kontakt-form-spalte {
    flex: 1 1 50%;
    min-width: 300px;
}

/* Mobil-Optimierung für die Kontaktseite */
@media (max-width: 768px) {
    .kontakt-form-spalte {
        order: 1; /* Zwingt das Formular auf dem Handy an die erste Stelle (ganz nach oben) */
    }
    .kontakt-info-spalte {
        order: 2; /* Setzt die Adressdaten und Maps darunter an die zweite Stelle */
    }
}

/* --- FORMULARE --- */
.form-group {
    margin-bottom: 20px;
}
.form-group label { 
    display: block; 
    margin-bottom: 5px; 
    font-weight: 600; 
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%; 
    padding: 12px; 
    border: 1px solid #ccc; 
    border-radius: 4px; 
    font-size: 1rem;
    background: var(--white);
}
.hidden-field { display: none !important; }

/* --- BUTTONS --- */
.btn {
    display: inline-block;
    background: var(--accent-color);
    color: var(--white);
    padding: 12px 28px;
    border-radius: 4px;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
    text-align: center;
}
.btn:hover { background: #0f233c; }

.card .btn {
    width: 100%;
    margin-top: auto;
}

/* --- IMMOWELT IFRAME CONTAINER --- */
.iframe-container {
    position: relative;
    width: 100%;
    height: 75vh;
    overflow: hidden;
    border-radius: 6px;
    border: 1px solid #eee;
    margin-top: 30px;
}
.iframe-container iframe {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
}
@media (max-width: 768px) {
    .iframe-container { height: 60vh; -webkit-overflow-scrolling: touch; }
}

/* --- FOOTER --- */
.main-footer {
    background: var(--light-gray);
    padding: 40px 20px;
    text-align: center;
    margin-top: 60px;
    font-size: 0.95rem;
    border-top: 1px solid #eee;
}
.footer-nav { margin-top: 15px; }
.footer-nav a { margin: 0 10px; color: var(--accent-color); font-weight: 500; }

/* Sorgt dafür, dass sich beim Drüberfahren mit der Maus das Vorschaubild abdunkelt und der Button hervorgehoben wird */
.maps-link-container:hover .maps-overlay {
    background: rgba(26, 54, 93, 0.75) !important;
}
.maps-link-container:hover .maps-btn {
    transform: scale(1.05) !important;
    background: #0f233c !important;
}