/* --- Global Styles & Variables --- */
:root {
    --primary-color: #0a4d68; /* Ein professionelles Dunkelblau */
    --secondary-color: #088395; /* Ein leuchtenderes Türkis/Blau */
    --accent-color: #f5a623; /* Ein warmer Akzentton (z.B. für Buttons) */
    --dark-grey: #333333;
    --light-grey: #f4f4f4;
    --white-color: #ffffff;
    --body-font: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --heading-font: 'Montserrat', sans-serif;
}

body {
    font-family: var(--body-font);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: var(--dark-grey);
    background-color: var(--white-color);
}

.container {
    max-width: 1100px;
    margin: auto;
    overflow: hidden;
    padding: 0 2rem;
}

h1, h2, h3 {
    font-family: var(--heading-font);
    color: var(--primary-color);
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.2rem; }

p {
    margin-bottom: 1rem;
}

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

/* --- Header & Navigation --- */
.main-header {
    background: var(--white-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.main-nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.main-nav ul li {
    margin-left: 20px;
}

.main-nav ul li a {
    color: var(--dark-grey);
    padding: 5px 10px;
    transition: color 0.3s ease;
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    border-radius: 5px;
    background: var(--accent-color);
    color: var(--white-color);
    font-weight: bold;
    text-align: center;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background: #e1940f;
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(rgba(10, 77, 104, 0.8), rgba(10, 77, 104, 0.8)), url('images/hero-background.jpg') no-repeat center center/cover;
    color: var(--white-color);
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--white-color);
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin-top: 0;
}

.hero .btn-group .btn:first-child {
    margin-right: 15px;
    background: var(--accent-color);
}
.hero .btn-group .btn:last-child {
    background: transparent;
    border: 2px solid var(--white-color);
}

/* --- Sections --- */
.section {
    padding: 4rem 0;
}

.section-light {
    background: var(--light-grey);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.service-card {
    background: var(--white-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.service-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* Why-MTS Section */
.why-mts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.why-mts-item h3 {
    display: flex;
    align-items: center;
}
.why-mts-item i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-right: 10px;
}


/* Testimonial Section */
.testimonial {
    background: var(--primary-color);
    color: var(--white-color);
    text-align: center;
    padding: 3rem 1rem;
}
.testimonial blockquote {
    font-size: 1.2rem;
    font-style: italic;
    max-width: 700px;
    margin: 0 auto 1rem auto;
    border: none;
}
.testimonial cite {
    font-weight: bold;
}


/* --- Footer --- */
.main-footer {
    background: var(--dark-grey);
    color: var(--white-color);
    padding: 3rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer-grid h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-grid ul {
    list-style: none;
    padding: 0;
}

.footer-grid ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-grid ul li a:hover {
    color: var(--white-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    margin-top: 2rem;
}


/* --- Responsive Design --- */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .hero h1 { font-size: 2.8rem; }

    .main-header .container {
        flex-direction: column;
    }

    .main-nav ul {
        margin-top: 1rem;
        flex-direction: column;
        align-items: center;
    }

    .main-nav ul li {
        margin: 5px 0;
    }

    .services-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
}