/* Globale Layout-Struktur */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6;
    color: #333;
}

/* #top-navbar & #second-navbar */
.navbar-global, .navbar-secondary {
    display: flex;
    align-items: center;
    padding: 0 20px;
    height: 50px;
}

.navbar-global {
    background-color: #1a252f;
}

.navbar-secondary {
    background-color: #2c3e50;
    border-bottom: 2px solid #34495e;
}

.navbar-global a, .navbar-secondary a {
    color: #ecf0f1;
    text-decoration: none;
    padding: 0 15px;
    line-height: 50px;
    height: 100%;
}

.navbar-global a:hover, .navbar-secondary a:hover, .navbar-global a.active, .navbar-secondary a.active {
    background-color: #34495e;
    color: #1abc9c;
}

/* Dreigeteilter Hauptbereich: #main mit #main-navbar links und #main-content rechts */
.main-wrapper {
    display: flex;
    min-height: calc(100vh - 100px);
}

.main-navbar {
    width: 220px;
    background-color: #ffffff;
    border-right: 1px solid #e0e0e0;
    padding: 20px 0;
}

.main-navbar a {
    display: block;
    padding: 12px 25px;
    color: #555;
    text-decoration: none;
    border-left: 4px solid transparent;
}

.main-navbar a:hover, .main-navbar a.active {
    background-color: #f8f9fa;
    color: #2c3e50;
    font-weight: bold;
    border-left-color: #1abc9c;
}

.main-content {
    flex: 1;
    padding: 30px;
    background-color: #f4f7f6;
}

.content-box {
    background: #ffffff;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}