/* MeshWiki Styles */

:root {
    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f5;
    --color-text: #333333;
    --color-text-muted: #666666;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-link: #2563eb;
    --color-link-missing: #dc2626;
    --color-border: #e5e5e5;
    --color-danger: #dc3545;
    --color-danger-hover: #bb2d3b;
    --color-success-bg: #dcfce7;
    --color-success-text: #166534;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --font-sans: system-ui, -apple-system, sans-serif;
    --font-mono: ui-monospace, monospace;
    --max-width: 1100px;
}

[data-theme="dark"] {
    --color-bg: #1e1e1e;
    --color-bg-secondary: #2d2d2d;
    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-primary: #2dd4bf;
    --color-primary-hover: #5eead4;
    --color-link: #2dd4bf;
    --color-link-missing: #f87171;
    --color-border: #3f3f46;
    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --color-success-bg: #064e3b;
    --color-success-text: #6ee7b7;
    --color-shadow: rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

/* Layout */
.layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav a {
    color: var(--color-text-muted);
    text-decoration: none;
}

.nav a:hover {
    color: var(--color-primary);
}

.main {
    flex: 1;
    padding: 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
}

.main--page-view {
    max-width: 100%;
    padding: 0;
}

.footer {
    border-top: 1px solid var(--color-border);
    padding: 1rem 2rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Page List */
.page-list h1 {
    margin-bottom: 1.5rem;
}

.pages {
    list-style: none;
}

.pages li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.pages a {
    color: var(--color-link);
    text-decoration: none;
}

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

/* Page List Table */
.page-list-table-wrap {
    overflow-x: auto;
}

.page-list-table {
    width: 100%;
    border-collapse: collapse;
}

.page-list-table th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 0.5rem 0.75rem;
    border-bottom: 2px solid var(--color-border);
}

.page-list-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.page-list-table tbody tr:hover {
    background: var(--color-bg-secondary);
}

.page-list-table a {
    color: var(--color-link);
    text-decoration: none;
}

.page-list-table a:hover {
    text-decoration: underline;
}

.page-list-date {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.page-list-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.tag--small {
    font-size: 0.75rem;
    padding: 0.0625rem 0.5rem;
}

.page-list-words {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-align: right;
    white-space: nowrap;
}

.empty-state {
    color: var(--color-text-muted);
    padding: 2rem;
    text-align: center;
    background: var(--color-bg-secondary);
    border-radius: 8px;
}

/* Page View */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    font-size: 2rem;
}

.page-content {
    line-height: 1.8;
}

.page-content h1,
.page-content h2,
.page-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.page-content p {
    margin-bottom: 1rem;
}

.page-content ul,
.page-content ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.page-content code {
    font-family: var(--font-mono);
    background: var(--color-bg-secondary);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.875em;
}

.page-content pre {
    background: var(--color-bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.page-content pre code {
    background: none;
    padding: 0;
}

.page-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.page-content th,
.page-content td {
    border: 1px solid var(--color-border);
    padding: 0.5rem;
    text-align: left;
}

.page-content th {
    background: var(--color-bg-secondary);
}

/* Frontmatter Card */
.frontmatter-card {
    float: right;
    width: 240px;
    margin: 0 0 1rem 1.5rem;
    border: 1px solid #c7d2d0;
    border-radius: 8px;
    font-size: 0.8125rem;
    background: #f0f7f6;
}

[data-theme="dark"] .frontmatter-card {
    background: #1a2e2b;
    border-color: #2a4a45;
}

.frontmatter-card-header {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 0.5rem 0.75rem;
    background: #e2edeb;
    border-bottom: 1px solid #c7d2d0;
    border-radius: 8px 8px 0 0;
    margin: 0;
}

[data-theme="dark"] .frontmatter-card-header {
    background: #1f3733;
    border-bottom-color: #2a4a45;
}

.frontmatter-dl {
    margin: 0;
    padding: 0;
}

.frontmatter-row {
    display: flex;
    padding: 0.375rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.frontmatter-row:last-child {
    border-bottom: none;
}

.frontmatter-row dt {
    flex-shrink: 0;
    width: 70px;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: capitalize;
}

.frontmatter-row dd {
    margin: 0;
    color: var(--color-text);
    word-break: break-word;
}

.frontmatter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.frontmatter-tags .tag {
    font-size: 0.6875rem;
    padding: 0.0625rem 0.5rem;
}

/* Wiki Links */
.wiki-link {
    color: var(--color-link);
    text-decoration: none;
}

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

.wiki-link-missing {
    color: var(--color-link-missing);
}

/* Tags */
.page-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--color-bg-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Page Edit */
.edit-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group textarea {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    resize: vertical;
    background: var(--color-bg);
    color: var(--color-text);
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
}

.help-text {
    background: var(--color-bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
}

.help-text h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.help-text ul {
    padding-left: 1.5rem;
}

.help-text code {
    font-family: var(--font-mono);
    background: var(--color-bg);
    padding: 0.125rem 0.25rem;
    border-radius: 4px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
}

.btn:hover {
    background: var(--color-bg-secondary);
}

.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-theme {
    font-size: 0.8125rem;
    padding: 0.25rem 0.75rem;
}

.btn-danger {
    background: var(--color-danger);
    border-color: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: var(--color-danger-hover);
}

/* Backlinks Panel */
.backlinks-panel {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--color-bg-secondary);
    border-radius: 8px;
    border-left: 3px solid var(--color-primary);
}

.backlinks-panel h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
}

.backlinks-list {
    list-style: none;
    padding: 0;
}

.backlinks-list li {
    padding: 0.25rem 0;
}

.backlinks-list a {
    color: var(--color-link);
    text-decoration: none;
}

.backlinks-list a:hover {
    text-decoration: underline;
}

/* MetaTable */
.metatable-wrapper {
    margin: 1rem 0;
}

.metatable {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.metatable thead th {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: 0.5rem 0.75rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: capitalize;
}

.metatable tbody td {
    border: 1px solid var(--color-border);
    padding: 0.5rem 0.75rem;
}

.metatable tbody tr:nth-child(even) {
    background: var(--color-bg-secondary);
}

.metatable tbody tr:hover {
    background: var(--color-border);
}

.metatable .wiki-link {
    font-weight: 500;
}

.metatable-empty,
.metatable-unavailable,
.metatable-error {
    color: var(--color-text-muted);
    font-style: italic;
    padding: 0.5rem 0;
}

/* MetaTable Inline Editing */
.metatable tbody td[data-editable]:hover {
    outline: 2px dashed var(--color-primary);
    outline-offset: -2px;
    cursor: pointer;
}

.metatable-editing {
    padding: 0 !important;
}

.metatable-edit-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--color-primary);
    border-radius: 0;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    background: var(--color-bg);
    color: var(--color-text);
    box-sizing: border-box;
    outline: none;
}

.metatable-edit-input:focus {
    border-color: var(--color-primary-hover);
    box-shadow: 0 0 0 1px var(--color-primary-hover);
}

/* Graph Visualization */
.main--full-width {
    max-width: 100%;
    padding: 0;
}

.graph-page {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
}

.graph-toolbar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.75rem 2rem;
    border-bottom: 1px solid var(--color-border);
}

.graph-toolbar h1 {
    font-size: 1.25rem;
    margin: 0;
}

.graph-stats {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.graph-ws-status {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
    margin-left: auto;
}

.graph-ws-status.connected {
    background: var(--color-success-bg);
    color: var(--color-success-text);
}

.graph-container {
    flex: 1;
    overflow: hidden;
    background: var(--color-bg);
}

#graph-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.graph-unavailable {
    padding: 3rem;
    text-align: center;
    color: var(--color-text-muted);
}

/* ========== Header Search ========== */
.header-search {
    position: relative;
    flex: 0 1 280px;
}

.header-search input {
    width: 100%;
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
}

.header-search input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 0 0 6px 6px;
    box-shadow: 0 4px 12px var(--color-shadow);
    z-index: 100;
    max-height: 320px;
    overflow-y: auto;
    display: none;
}

.search-dropdown:not(:empty) {
    display: block;
}

.search-dropdown-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.search-dropdown-list li a {
    display: block;
    padding: 0.5rem 0.75rem;
    text-decoration: none;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.search-dropdown-list li a:hover {
    background: var(--color-bg-secondary);
}

.search-result-title {
    display: block;
    font-weight: 500;
    color: var(--color-link);
}

.search-result-snippet {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-dropdown-empty {
    padding: 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    text-align: center;
}

/* ========== Editor ========== */
.editor-toolbar {
    display: flex;
    gap: 0.25rem;
    padding: 0.5rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 6px 6px 0 0;
    margin: 0 2rem;
}

.editor-toolbar button {
    padding: 0.25rem 0.5rem;
    border: 1px solid transparent;
    border-radius: 4px;
    background: none;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text);
    min-width: 2rem;
    text-align: center;
}

.editor-toolbar button:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
}

.editor-toolbar button.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.toolbar-separator {
    width: 1px;
    height: 1.25rem;
    background: var(--color-border);
    margin: 0 0.25rem;
    align-self: center;
}

.editor-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin: 0 2rem;
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 6px 6px;
    height: calc(100vh - 220px);
    min-height: 300px;
}

.editor-pane {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.editor-pane form {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.editor-pane textarea {
    width: 100%;
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    padding: 1rem;
    border: none;
    border-right: 1px solid var(--color-border);
    resize: none;
    outline: none;
    overflow-y: auto;
    background: var(--color-bg);
    color: var(--color-text);
}

.preview-pane {
    padding: 1rem;
    overflow-y: auto;
    line-height: 1.8;
}

.preview-placeholder {
    color: var(--color-text-muted);
    font-style: italic;
}

/* ========== Editor Tips ========== */
.editor-tips {
    margin: 0.5rem 2rem 0;
}

.editor-tips summary {
    cursor: pointer;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    padding: 0.375rem 0;
    user-select: none;
}

.editor-tips summary:hover {
    color: var(--color-primary);
}

.editor-tips-content {
    padding: 0.75rem 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    margin-top: 0.25rem;
}

.tips-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.tips-column h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
    color: var(--color-text);
}

.tips-column ul {
    list-style: none;
    padding: 0;
    margin: 0 0 0.5rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.tips-column li {
    padding: 0.125rem 0;
}

.tips-column code {
    font-family: var(--font-mono);
    background: var(--color-bg);
    padding: 0.0625rem 0.25rem;
    border-radius: 3px;
    font-size: 0.75rem;
}

.tips-column kbd {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 0.0625rem 0.375rem;
    box-shadow: 0 1px 0 var(--color-border);
}

.editor-split--no-preview {
    grid-template-columns: 1fr;
}

.editor-split--no-preview .preview-pane {
    display: none;
}

.editor-split--no-preview .editor-pane textarea {
    border-right: none;
}

/* ========== Autocomplete ========== */
.autocomplete-dropdown {
    position: absolute;
    bottom: 0;
    left: 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: 0 4px 12px var(--color-shadow);
    z-index: 50;
    max-height: 200px;
    overflow-y: auto;
    display: none;
}

.autocomplete-dropdown:not(:empty) {
    display: block;
}

.autocomplete-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.autocomplete-item {
    padding: 0.375rem 0.75rem;
    cursor: pointer;
    font-size: 0.875rem;
}

.autocomplete-item:hover,
.autocomplete-item.active {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

/* ========== Breadcrumb ========== */
.breadcrumb {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.breadcrumb a {
    color: var(--color-text-muted);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

/* ========== Page Body (full-width view) ========== */
.page > .page-body {
    padding: 2rem 3rem;
}

/* ========== TOC Sidebar ========== */
.page--with-toc {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 0;
    min-height: calc(100vh - 120px);
    transition: grid-template-columns 0.2s ease;
}

.page--with-toc .page-body {
    padding: 2rem 3rem;
}

.page--toc-collapsed {
    grid-template-columns: 44px 1fr;
}

.toc-sidebar {
    position: sticky;
    top: 0;
    align-self: start;
    height: calc(100vh - 60px);
    overflow-y: auto;
    border-right: 1px solid var(--color-border);
    padding: 1.25rem 1rem 1.25rem 1.25rem;
    background: var(--color-bg);
    transition: padding 0.2s ease;
}

.page--toc-collapsed .toc-sidebar {
    padding: 1.25rem 0.625rem;
    overflow: hidden;
}

.page--toc-collapsed .toc-details summary {
    white-space: nowrap;
    overflow: hidden;
    font-size: 0;
}

.page--toc-collapsed .toc-details summary::before {
    font-size: 0.75rem;
}

.toc-details summary {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    user-select: none;
    padding: 0.25rem 0;
    list-style: none;
}

.toc-details summary::-webkit-details-marker {
    display: none;
}

.toc-details summary::before {
    content: "\25BC";
    display: inline-block;
    font-size: 0.625rem;
    margin-right: 0.375rem;
    transition: transform 0.15s;
}

.toc-details[open] summary::before {
    content: "\25B6";
}

.toc-details summary:hover {
    color: var(--color-primary);
}

.toc-details .toc {
    margin-top: 0.5rem;
}

.toc ul {
    list-style: none;
    padding-left: 0;
    font-size: 0.8125rem;
}

.toc ul ul {
    padding-left: 0.75rem;
}

.toc li {
    padding: 0.125rem 0;
}

.toc a {
    color: var(--color-text-muted);
    text-decoration: none;
}

.toc a:hover {
    color: var(--color-primary);
}

/* ========== Clickable Tags ========== */
.tag-link {
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s;
}

.tag-link:hover {
    background: var(--color-border);
    color: var(--color-text);
}

/* ========== Tag Cloud Page ========== */
.tags-page h1 {
    margin-bottom: 1.5rem;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag-count {
    font-size: 0.75rem;
    background: var(--color-border);
    border-radius: 9999px;
    padding: 0 0.375rem;
    margin-left: 0.25rem;
}

/* ========== Recent Pages ========== */
.recent-pages {
    margin-bottom: 2rem;
}

.recent-pages h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.recent-list {
    list-style: none;
}

.recent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.375rem 0;
    border-bottom: 1px solid var(--color-border);
}

.recent-item a {
    color: var(--color-link);
    text-decoration: none;
}

.recent-item a:hover {
    text-decoration: underline;
}

.recent-date {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

/* ========== Search Results Page ========== */
.search-page h1 {
    margin-bottom: 1rem;
}

.search-form {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.search-input-full {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
}

.search-input-full:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-results-list {
    list-style: none;
}

.search-result-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.search-result-link {
    color: var(--color-link);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.0625rem;
}

.search-result-link:hover {
    text-decoration: underline;
}

.search-result-type {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-bg-secondary);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    margin-left: 0.5rem;
}

.search-result-item .search-result-snippet {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ========== Toast Notifications ========== */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 12px var(--color-shadow);
    animation: toast-in 0.3s ease-out;
    max-width: 360px;
}

.toast--success {
    border-left: 3px solid #22c55e;
}

.toast--error {
    border-left: 3px solid var(--color-danger);
}

.toast--fade-out {
    animation: toast-out 0.3s ease-in forwards;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toast-out {
    from { opacity: 1; }
    to { opacity: 0; transform: translateY(-10px); }
}

/* ========== Loading Bar ========== */
.loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--color-primary);
    z-index: 9999;
    width: 0;
    opacity: 0;
    transition: width 0.3s ease, opacity 0.3s ease;
}

.loading-bar.active {
    width: 80%;
    opacity: 1;
    transition: width 2s ease;
}

.loading-bar.done {
    width: 100%;
    opacity: 0;
    transition: width 0.1s ease, opacity 0.3s ease 0.1s;
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.htmx-indicator {
    display: none;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
    display: inline-block;
}

/* Content fade-in */
.main {
    animation: fade-in 0.2s ease-out;
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========== Hamburger Nav Toggle ========== */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
    padding: 0.25rem;
    line-height: 1;
}

/* ========== Responsive: Tablet / Mobile ========== */
@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

    .nav-toggle {
        display: block;
        order: 2;
        margin-left: auto;
    }

    .logo {
        order: 1;
    }

    .header-search {
        flex: 1 1 100%;
        order: 3;
    }

    .nav {
        display: none;
        flex-direction: column;
        width: 100%;
        order: 4;
        gap: 0;
        border-top: 1px solid var(--color-border);
        padding-top: 0.5rem;
    }

    .nav.nav--open {
        display: flex;
    }

    .nav a,
    .nav .btn-theme {
        padding: 0.5rem 0;
        width: 100%;
        text-align: left;
    }

    /* Main content */
    .main {
        padding: 1rem;
    }

    /* TOC sidebar -> top accordion */
    .page--with-toc {
        grid-template-columns: 1fr;
    }

    .toc-sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding: 0.75rem 1rem;
    }

    /* Page body */
    .page > .page-body,
    .page--with-toc .page-body {
        padding: 1rem;
    }

    .page-header {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }

    /* Frontmatter card */
    .frontmatter-card {
        float: none;
        width: 100%;
        margin: 0 0 1rem 0;
    }

    /* Editor */
    .editor-split {
        grid-template-columns: 1fr;
        height: auto;
        margin: 0 1rem;
    }

    .editor-toolbar {
        margin: 0 1rem;
        flex-wrap: wrap;
    }

    .editor-pane textarea {
        min-height: 50vh;
    }

    .preview-pane {
        min-height: 200px;
        border-top: 1px solid var(--color-border);
    }

    .editor-tips {
        margin: 0.5rem 1rem 0;
    }

    .tips-columns {
        grid-template-columns: 1fr;
    }

    /* Graph */
    .graph-toolbar {
        flex-wrap: wrap;
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    .search-form {
        flex-direction: column;
    }

    .page-actions {
        width: 100%;
        display: flex;
    }

    .page-actions .btn {
        flex: 1;
        text-align: center;
    }

    .page-list-words {
        display: none;
    }

    .page-list-table th:last-child {
        display: none;
    }
}

/* ========== Utility ========== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Login page */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}

.login-box {
    width: 100%;
    max-width: 360px;
    padding: 2rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--color-shadow);
}

.login-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--color-text);
}

.login-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fca5a5;
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

[data-theme="dark"] .login-error {
    background: #450a0a;
    color: #fca5a5;
    border-color: #7f1d1d;
}

.login-form label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.login-form input[type="password"] {
    width: 100%;
    padding: 0.5rem 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 1rem;
}

.login-form input[type="password"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.login-form .btn {
    width: 100%;
}