body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 40px auto;
    max-width: 1000px;
    background-color: #f9f9f9;
    color: #333;
}

table {
    width: 1000px;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 30px;
    background-color: #fff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 14px 16px;
    text-align: left;
}

th {
    background-color: #f0f0f0;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 14px;
    color: #555;
}

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

tr:hover {
    background-color: #f1faff;
}

td:nth-child(1) { width: 5%; }
td:nth-child(2) { width: 25%; }
td:nth-child(3) { width: 20%; }
td:nth-child(4) { width: 20%; }
td:nth-child(5) { width: 10%; }
td:nth-child(6) { width: 10%; }
td:nth-child(7) { width: 5%;  }
td:nth-child(8) { width: 2%;  }

.book_delete {
    width: 30px;
    height: 30px;
    background-color: #d82727;
    color: #ffffff;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border: none;
}

.book_delete:hover {
    background-color: #c0392b;
}

/* Dodatkowy kontener, by formularz i nagłówek były wyśrodkowane */
.form-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 50px;
    text-align: center;
}

/* Styl formularza */
.book-form {
    background-color: #fff;
    padding: 30px;
    margin-top: 20px;
    border-radius: 10px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.05);
    max-width: 400px;
    width: 100%;
    margin-bottom: 20px;
}

.book-form .form-group {
    margin-bottom: 20px;
    text-align: left;
    width: 100%;
}

.book-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.book-form input[type="text"],
.book-form input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    font-size: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.book-form input:focus {
    border-color: #3498db;
    outline: none;
}

.book-form button {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 15px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.book-form button:hover {
    background-color: #2980b9;
}