body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.logout-btn {
    background: #dc3545;
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
}

.chart-container {
    height: 500px;
    margin: 20px 0;
}

.time-filter {
    margin: 20px 0;
    text-align: right;
}

.form-control {
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.alert {
    padding: 12px;
    margin: 20px 0;
    border-radius: 4px;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
}

.alert.success {
    background: #d4edda;
    color: #155724;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="time"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.btn {
    background: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.btn:hover {
    background: #0056b3;
}
/* Tabellen-Stil */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.data-table th, .data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.data-table th {
    background-color: #f8f9fa;
}

/* Aktions-Buttons */
.btn-edit, .btn-delete {
    padding: 5px 10px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9em;
}

.btn-edit {
    background-color: #ffc107;
    color: black;
}

.btn-delete {
    background-color: #dc3545;
    color: white;
}

.btn-edit:hover, .btn-delete:hover {
    opacity: 0.8;
}

/* Responsive Tabellen */
@media screen and (max-width: 600px) {
    .data-table {
        display: block;
        overflow-x: auto;
    }
}