/* Farbvariablen & Basis-Einstellungen */
:root {
    --primary: #2563eb;
    --text: #1f2937;
    --bg: #f9fafb;
    --card-bg: #ffffff;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.6;
}

/* Navigation */
header {
    background-color: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--primary);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}


/* Hauptbereich / Hero */
.hero {
    max-width: 1100px;
    margin: 4rem auto;
    padding: 0 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: #4b5563;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.9;
}

/* Raster für Inhalte / Leistungen */
.features {
    max-width: 1100px;
    margin: 4rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border: 1px solid #e5e7eb;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: #ffffff;
    margin-top: 4rem;
    border-top: 1px solid #e5e7eb;
    color: #6b7280;
}