body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #f4f7f6;
    margin: 0;
    color: #333;
}

/* Obere Navigationsleiste */
.header {
    background-color: #ffffff;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-bottom: 3px solid #0056b3;
}

.logo { font-size: 22px; font-weight: bold; color: #0056b3; }

/* Hauptcontainer */
.main-content {
    max-width: 1100px;
    margin: 30px auto;
    padding: 0 20px;
}

/* Karten-Stil für mehr Übersicht */
.dashboard-card {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 25px;
}

/* Tabellen-Styling */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th {
    background-color: #f8f9fa;
    color: #666;
    padding: 12px;
    text-align: left;
    border-bottom: 2px solid #dee2e6;
    font-size: 0.9rem;
}

td {
    padding: 15px 12px;
    border-bottom: 1px solid #eee;
}

/* Status-Buttons */
.btn-nav {
    text-decoration: none;
    color: #555;
    padding: 8px 15px;
    border-radius: 4px;
    border: 1px solid #ddd;
    margin-left: 10px;
    font-size: 14px;
}

.btn-nav:hover { background-color: #f0f0f0; }

.logout-link { color: #dc3545; border-color: #dc3545; }