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

.admin-container {
    padding: 20px;
    background: white;
    margin: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1, h2 {
    color: #333;
    margin-bottom: 20px;
}

.form-group {
    margin: 10px 0;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.form-group input,
.form-group select {
    padding: 8px;
    width: 200px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.btn {
    padding: 10px 20px;
    margin: 5px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
}

.btn-add {
    background: #28a745;
    color: white;
}

.btn-add:hover {
    background: #218838;
}

.btn-update {
    background: #007bff;
    color: white;
}

.btn-update:hover {
    background: #0056b3;
}

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

.btn-delete:hover {
    background: #c82333;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background: #f8f9fa;
    font-weight: bold;
    color: #495057;
}

tr:nth-child(even) {
    background: #f8f9fa;
}

tr:hover {
    background: #e9ecef;
}

td input {
    width: 100%;
    padding: 4px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.nav-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 20px 0;
}

.nav-btn {
    padding: 15px 40px;
    background-color: #333;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 18px;
    transition: background-color 0.3s;
}

.nav-btn:hover {
    background-color: #555;
}