/* ===========================
   Farbvariablen
=========================== */
:root {
    --primary: #2563eb;
    --dark: #1e293b;
    --light: #f8fafc;
    --text: #334155;
}

/* ===========================
   Grundlayout
=========================== */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    line-height: 1.6;
    background: var(--light);
    color: var(--text);
}

/* ===========================
   Navigation
=========================== */
nav {
    background: var(--dark);
    padding: 1rem 2rem;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* wichtig für kleine Displays */
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* ===========================
   Hauptcontainer
=========================== */
main {
    max-width: 800px;
    margin: 50px auto;
    padding: 40px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

h1 {
    color: var(--dark);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 10px;
}

/* ===========================
   PDF Download Buttons
=========================== */
.pdf-link {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    margin: 10px 0;
    transition: transform 0.2s, background 0.2s;
}

.pdf-link:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

ul {
    list-style: none;
    padding: 0;
}

/* ===========================
   Footer
=========================== */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background: var(--dark);
    color: white;
    font-size: 0.9rem;
}

footer a {
    color: var(--primary);
    text-decoration: none;
    margin: 0 5px;
    transition: color 0.3s;
}

footer a:hover {
    color: white;
}

/* ===========================
   Responsive Design
=========================== */

/* Smartphones (bis ca. 600px) */
@media (max-width: 600px) {

    nav {
        padding: 0.8rem;
        gap: 12px;
    }

    nav a {
        font-size: 0.95rem;
    }

    main {
        margin: 20px;
        padding: 20px;
    }

    h1 {
        font-size: 1.4rem;
    }

    .pdf-link {
        width: 100%;
        text-align: center;
        padding: 12px;
    }

    footer {
        padding: 15px;
        font-size: 0.85rem;
    }
}

/* Tablets (600–900px) */
@media (max-width: 900px) {

    main {
        margin: 30px;
        padding: 30px;
    }

    h1 {
        font-size: 1.6rem;
    }
}