body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    min-height: 100vh;
}

nav {
    background: #fff;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

nav a {
    color: #667eea;
    text-decoration: none;
    margin: 0 10px;
    font-weight: bold;
}

nav a:hover {
    color: #764ba2;
}

h2 {
    text-align: center;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

table {
    border-collapse: collapse;
    width: 100%;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

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

th {
    background: #667eea;
    color: #fff;
    font-weight: bold;
}

tr:nth-child(even) {
    background: #f9f9f9;
}

tr:hover {
    background: #f1f1f1;
}

.btn {
    background: #28a745;
    color: #fff;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    margin: 5px;
}

.btn:hover {
    background: #218838;
}

.btn-edit {
    background: #ffc107;
    color: #212529;
}

.btn-edit:hover {
    background: #e0a800;
}

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

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

.form {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    max-width: 500px;
    margin: 0 auto 20px;
}

.form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

.form input, .form textarea, .form select {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

.form textarea {
    height: 80px;
}

.search-form {
    text-align: center;
    margin-bottom: 20px;
}

.search-form input {
    padding: 10px;
    width: 300px;
    border: 1px solid #ddd;
    border-radius: 5px 0 0 5px;
}

.search-form button {
    padding: 10px 15px;
    border: none;
    background: #667eea;
    color: #fff;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
}

.search-form button:hover {
    background: #5a67d8;
}

a {
    color: #667eea;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}