* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem;
    margin-bottom: 2rem;
}

header nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

header nav a:hover {
    text-decoration: underline;
}

.logo-link {
    display: inline-block;
    vertical-align: middle;
}

.logo-link:hover {
    text-decoration: none;
    opacity: 0.8;
}

img.header-logo {
    height: 2em;
    width: auto;
    vertical-align: middle;
    max-height: 3em;
}

.nav-separator {
    margin: 0 0.5rem;
    color: #95a5a6;
}

.nav-right {
    float: right;
}

.user-info {
    margin-right: 1rem;
    color: #ecf0f1;
}

@media (max-width: 768px) {
    .nav-right {
        float: none;
        display: block;
        margin-top: 0.5rem;
    }
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem 2rem;
    background-color: white;
    min-height: 70vh;
}

footer {
    background-color: #34495e;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

h1 {
    color: #2c3e50;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #3498db;
}

h2 {
    color: #34495e;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

h3 {
    color: #34495e;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.lead {
    font-size: 1.1rem;
    color: #7f8c8d;
    margin-bottom: 2rem;
}

.breadcrumb {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: #3498db;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Lists */
.book-list, .edition-list {
    list-style: none;
    padding: 0;
}

.book-list li, .edition-list li {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background-color: #ecf0f1;
    border-left: 4px solid #3498db;
}

.book-list a {
    color: #2c3e50;
    text-decoration: none;
    font-weight: bold;
}

.book-list a:hover {
    color: #3498db;
}

.hint {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-left: 0.5rem;
}

/* Forms */
form {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 4px;
    margin-top: 1rem;
}

form div {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 0.25rem;
    color: #34495e;
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #bdc3c7;
    border-radius: 4px;
    font-size: 1rem;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #3498db;
}

input[type="radio"] {
    margin-right: 0.25rem;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
}

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

/* Page Items */
.items-list {
    margin-top: 1rem;
}

.item {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.item.erratum {
    border-left: 4px solid #e74c3c;
}

.item.reference {
    border-left: 4px solid #27ae60;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.item-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: bold;
    color: white;
}

.item.erratum .item-type {
    background-color: #e74c3c;
}

.item.reference .item-type {
    background-color: #27ae60;
}

.item-fix-status {
    font-size: 0.85rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    background-color: #ecf0f1;
    color: #2c3e50;
}

.item-body {
    margin: 0.75rem 0;
    line-height: 1.6;
    white-space: pre-wrap;
}

.item-meta {
    color: #7f8c8d;
    font-size: 0.85rem;
    border-top: 1px solid #ecf0f1;
    padding-top: 0.5rem;
}

/* Erratum Display Sections */
.erratum-location {
    margin-bottom: 1rem;
}

.erratum-correction {
    margin-bottom: 1rem;
    padding: 1rem;
    background: #f0f8ff;
    border-left: 4px solid #3498db;
    border-radius: 4px;
}

.erratum-note {
    margin-bottom: 1rem;
    padding: 1rem;
    background: #fffef0;
    border-left: 4px solid #f39c12;
    border-radius: 4px;
}

.erratum-body {
    line-height: 1.6;
}

.main-erratum {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid #e74c3c;
}

.main-erratum h3 {
    color: #e74c3c;
    margin-top: 0;
    margin-bottom: 1rem;
}

.main-erratum h4 {
    color: #34495e;
    font-size: 1rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.badge-fixed {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.2rem 0.5rem;
    background-color: #27ae60;
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    border-radius: 3px;
    white-space: nowrap;
}

/* Task list styles */
.task-list-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.task-list-item input[type="checkbox"] {
    margin-right: 0.5rem;
    flex-shrink: 0;
}

.task-list-text {
    display: inline;
    line-height: 1.6;
}

.task-list-item .badge-fixed {
    margin-left: 0.5rem;
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
    vertical-align: middle;
}

/* Sections */
.create-book,
.create-edition,
.create-item,
.page-search {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #ddd;
}

.page-items {
    margin-bottom: 2rem;
}

/* Tables */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.admin-table thead {
    background-color: #34495e;
    color: white;
}

.admin-table th,
.admin-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.admin-table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Form Layout */
.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.form-col {
    flex: 1;
}

.form-col label {
    display: block;
    margin-bottom: 0.25rem;
}

/* Book Lists */
.book-list-home {
    list-style: none;
    padding: 0;
}

.book-list-home li {
    margin-bottom: 1rem;
}

.book-link {
    display: block;
    padding: 1.5rem;
    background-color: #fff;
    border: 2px solid #3498db;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s;
}

.book-link:hover {
    background-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.book-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: #2c3e50;
}

.book-link:hover .book-title {
    color: white;
}

/* Admin Lists */
.admin-list {
    list-style: none;
    padding: 0;
}

.admin-list li {
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    background-color: #ecf0f1;
    border-left: 3px solid #3498db;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Buttons */
.btn-link {
    color: #3498db;
    text-decoration: none;
    margin-right: 0.5rem;
}

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

.btn-danger-small {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-danger-small:hover {
    background-color: #c0392b;
}

/* Responsive */
@media (max-width: 768px) {
    main {
        padding: 0 0.5rem 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .form-row {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-table {
        font-size: 0.85rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 0.5rem;
    }
}