body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f9f9f9;
}

.banner {
    max-width: 900px;
    height: 132px;
    margin: 0 auto 24px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.banner img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    object-position: center center;
    display: block;
    margin-top: -44px;
}

.page-header {
    max-width: 900px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.page-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-header h1 {
    margin: 0;
    color: #2e7d32;
    font-size: 22px;
}

.user-badge {
    font-size: 12px;
    color: #555;
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
    border-radius: 12px;
    padding: 3px 10px;
}

.logout-link {
    font-size: 13px;
    color: #c62828;
    text-decoration: none;
}

.logout-link:hover {
    text-decoration: underline;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f9f9f9;
    margin: -20px;
}

.login-box {
    width: 100%;
    max-width: 360px;
    background: white;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.login-box h1 {
    margin: 0 0 8px;
    color: #2e7d32;
    font-size: 24px;
    text-align: center;
}

.login-subtitle {
    margin: 0 0 20px;
    color: #666;
    font-size: 14px;
    text-align: center;
}

.login-error {
    margin: 0 0 12px;
    color: #c62828;
    font-size: 13px;
    text-align: center;
}

.login-form label {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    color: #444;
}

.login-form input {
    width: 100%;
    padding: 8px 10px;
    margin-bottom: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 14px;
}

.login-btn,
.guest-btn {
    width: 100%;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    border: 1px solid transparent;
}

.login-btn {
    background: #4CAF50;
    color: white;
    border-color: #43a047;
}

.login-btn:hover {
    background: #43a047;
}

.guest-form {
    margin-top: 12px;
}

.guest-btn {
    background: #f5f5f5;
    color: #333;
    border-color: #ccc;
}

.guest-btn:hover {
    background: #eeeeee;
}

.filter-row th {
    background-color: #e8f5e9;
    color: #333;
    font-weight: normal;
}

.add-book {
    padding: 6px 14px;
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
    border: 1px solid #2e7d32;
    border-radius: 4px;
    background: #e8f5e9;
    color: #2e7d32;
    cursor: pointer;
}

.add-book:hover {
    background: #c8e6c9;
}

.add-row th {
    background-color: #fff8e1;
    color: #333;
    font-weight: normal;
}

.add-row input {
    width: 100%;
    padding: 4px;
    font-size: 12px;
    border: 1px solid #ffb300;
    border-radius: 3px;
    box-sizing: border-box;
}

.add-row-actions {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.save-book {
    width: 100%;
    padding: 4px 0;
    font-size: 16px;
    font-weight: bold;
    border: 1px solid #2e7d32;
    border-radius: 3px;
    background: #e8f5e9;
    color: #2e7d32;
    cursor: pointer;
}

.save-book:hover {
    background: #c8e6c9;
}

.cancel-add {
    width: 100%;
    padding: 4px 0;
    font-size: 14px;
    font-weight: bold;
    border: 1px solid #c62828;
    border-radius: 3px;
    background: #ffebee;
    color: #c62828;
    cursor: pointer;
}

.cancel-add:hover {
    background: #ffcdd2;
}

.clear-filters {
    width: 100%;
    padding: 4px 0;
    font-size: 14px;
    font-weight: bold;
    border: 1px solid #c62828;
    border-radius: 3px;
    background: #ffebee;
    color: #c62828;
    cursor: pointer;
}

.clear-filters:hover {
    background: #ffcdd2;
}

.filter-row input {
    width: 100%;
    padding: 4px;
    font-size: 12px;
    border: 1px solid #ccc;
    border-radius: 3px;
    box-sizing: border-box;
}

th.sortable {
    cursor: pointer;
}

th.sortable:hover {
    background-color: #43a047;
}

table {
    border-collapse: collapse;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    background: white;
}

th,
td {
    border: 1px solid #ddd;
    padding: 6px;
    text-align: center;
    font-size: 13px;
}

th {
    background-color: #4CAF50;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

.pagination {
    max-width: 900px;
    margin: 12px auto 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.pagination button {
    padding: 2px 10px;
    font-size: 12px;
    line-height: 1.2;
    border: 1px solid #4CAF50;
    border-radius: 4px;
    background: #e8f5e9;
    color: #2e7d32;
    cursor: pointer;
}

.pagination button:hover:not(:disabled) {
    background: #c8e6c9;
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: default;
}

#page-info {
    font-size: 13px;
    color: #444;
}