/* Grundlegendes Layout */
body {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
}

/* Navigation */
.side-nav {
    width: 250px;
    background-color: #2c3e50;
    color: white;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    padding: 5px 0;
}

.nav-header {
    padding: 0 20px 20px;
    font-size: 1.5em;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
}

.side-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.side-nav li {
    margin: 5px 0;
    min-height: 50px;
}

.side-nav a {
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background-color 0.3s;
}

.side-nav a:hover {
    background-color: rgba(255,255,255,0.1);
}

.side-nav li.active a {
    background-color: #3498db;
}

.nav-divider {
    height: 1px;
    background-color: rgba(255,255,255,0.1);
    margin: 10px 0;
}

/* Hauptinhalt */
.main-content {
    margin-left: 250px;
    padding: 20px;
    flex-grow: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-radius: 8px;
}

/* Allgemeine Utility-Klassen */
.text-center {
    text-align: center;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mt-4 {
    margin-top: 1rem;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: #2ecc71;
    color: white;
}

.btn-success:hover {
    background-color: #27ae60;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}