/**
 * Literature Survey Table - Stylesheet
 * Custom styles for DataTables with multi-select dropdown filters
 *
 * @author Lennart Pape
 * @date 2026-01-04
 * @version 1.0.0
 */

/* CSS Custom Properties for Theming */
:root {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #495057;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --table-stripe: rgba(0, 0, 0, 0.05);
  --hover-bg: #f8f9fa;
  --shadow-color: rgba(0, 0, 0, 0.15);
  --accent-color: #0d6efd;
  --accent-hover: #0b5ed7;
}

[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #242424;
  --bg-tertiary: #2d2d2d;
  --text-primary: #e4e4e4;
  --text-secondary: #b8b8b8;
  --text-muted: #8a8a8a;
  --border-color: #404040;
  --table-stripe: rgba(255, 255, 255, 0.03);
  --hover-bg: #333333;
  --shadow-color: rgba(0, 0, 0, 0.5);
  --accent-color: #6c9bd1;
  --accent-hover: #5a8ac4;
}

/* Body */
body {
  padding: 2rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.page-header {
  flex-wrap: nowrap;
}

.page-controls {
  margin-left: auto;
  margin-top: 0.5rem;
}

.page-title {
  border: none;
  background: transparent;
  color: inherit;
  padding: 0;
  font: inherit;
  cursor: pointer;
  text-align: left;
  white-space: nowrap;
}

.page-title:hover {
  color: var(--accent-color);
}

.torte-icon {
  display: inline-block;
  transform-origin: 50% 75%;
}

.page-title:hover .torte-icon {
  animation: torte-wiggle 420ms ease-in-out;
}

@keyframes torte-wiggle {
  0% { transform: rotate(0deg); }
  20% { transform: rotate(-10deg); }
  40% { transform: rotate(8deg); }
  60% { transform: rotate(-6deg); }
  80% { transform: rotate(4deg); }
  100% { transform: rotate(0deg); }
}

.page-search-input {
  min-width: 8rem;
  max-width: 11rem;
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
  padding-right: 2rem;
}

.page-search-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.page-search-input::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.page-search-input::-webkit-search-cancel-button,
.page-search-input::-webkit-search-decoration {
  -webkit-appearance: none;
  appearance: none;
}

.page-search-input:focus {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.15rem rgba(13, 110, 253, 0.25);
}

.page-search-clear {
  position: absolute;
  right: 0.35rem;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
  width: 1.25rem;
  height: 1.25rem;
  padding: 0;
  cursor: pointer;
  display: none;
}

.page-search-clear:hover {
  color: var(--accent-color);
}

.page-search-clear.visible {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#toggle-all {
  font-size: 0.75rem;
  white-space: nowrap;
}

#toggle-all.search-disabled {
  opacity: 0.45;
  pointer-events: none;
}

.page-search-highlight {
  background-color: #ffd54f;
  color: #1f1f1f;
  padding: 0 0.1rem;
  border-radius: 0.2rem;
}

/* DataTable - Main Container */
.dataTables_wrapper {
  overflow: visible !important;
  font-size: 0.85rem;
}

/* Hide table until filters are ready */
.dataTables_wrapper {
  visibility: hidden;
}

.dataTables_wrapper.table-ready {
  visibility: visible;
}

#csvTable_wrapper {
  overflow: visible !important;
  width: 100%;
}

.dataTables_scroll {
  overflow-x: visible !important;
}

/* DataTable - Table Structure */
table.dataTable {
  table-layout: fixed;
  font-size: 0.85rem;
}

table.dataTable th,
table.dataTable td {
  padding: 0.5rem 0.75rem;
  word-break: break-word;
  overflow-wrap: break-word;
}

.dataTables_scrollBody table {
  width: 100% !important;
}

/* Links */
a {
  color: var(--accent-color);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

section h3,
section h4 {
  position: relative;
}

section h3 {
  cursor: pointer;
}

.js-loading section:has(:not(.loading)) {
  display: none;
}

.section-anchor {
  position: absolute;
  left: -1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9em;
  color: var(--text-muted);
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.15s ease, color 0.15s ease;
}

section h1:hover .section-anchor,
section h2:hover .section-anchor,
section h3:hover .section-anchor,
section h4:hover .section-anchor,
section h5:hover .section-anchor,
section h6:hover .section-anchor {
  opacity: 1;
}

.section-anchor:hover {
  color: var(--accent-color);
  text-decoration: none;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  margin-top: 1.5rem;
}

.markdown-content ul,
.markdown-content ol {
  padding-left: 1.25rem;
}

.markdown-content blockquote {
  border-left: 4px solid var(--border-color);
  padding: 0.6rem 0.8rem 0.6rem;
  margin: 0.75rem 0 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: 0.25rem;
  position: relative;
  overflow: visible;
}

.markdown-content blockquote.blockquote-depth-odd {
  background: var(--bg-secondary);
}

.markdown-content blockquote p:last-child {
  margin-bottom: 0;
}

.markdown-content .quote-source {
  margin-top: 1rem;
  text-align: right;
  font-size: 0.7rem;
  color: var(--text-muted);
  position: relative;
  top: -1.5rem;
  z-index: 1;
  margin-bottom: -1.25rem;
}

.markdown-content .quote-source a {
  display: inline-block;
  background: var(--bg-secondary);
  /* border: 1px solid var(--border-color); */
  border-radius: 999px 0 999px 999px;
  padding: 0.2rem 0.6rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.markdown-content .quote-source a:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.markdown-content .quote-source-inline {
  display: block;
  margin-top: -0.8rem;
  margin-bottom: 0.25rem;
  text-align: right;
  font-size: 0.7rem;
  color: var(--text-muted);
  position: static;
}

.markdown-content .quote-source-inline a {
  display: inline-block;
  background: var(--bg-secondary);
  /* border: 1px solid var(--border-color); */
  border-radius: 999px 0 999px 999px;
  padding: 0.2rem 0.6rem;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
}

.markdown-content .quote-source-inline a:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.markdown-content details > summary {
  color: var(--accent-color);
  cursor: pointer;
  text-decoration: none;
}

.markdown-content details > summary:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

section h1 .section-toggle,
section h2 .section-toggle,
section h3 .section-toggle,
section h4 .section-toggle,
section h5 .section-toggle,
section h6 .section-toggle {
  margin-left: 0.5rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9em;
  cursor: pointer;
  padding: 0;
}

.section-toggle .toggle-icon::before {
  content: '▸';
  display: inline-block;
  transition: transform 0.2s ease;
}

section:not(.section-collapsed) .section-toggle .toggle-icon::before {
  transform: rotate(90deg);
}

section.section-collapsed .section-content {
  display: none;
}

.section-preview {
  color: var(--text-muted);
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  display: none;
  cursor: pointer;
}

section.section-collapsed .section-preview {
  display: block;
}

/* Table Code */
table.dataTable code {
  background-color: var(--bg-tertiary);
  padding: 0.1rem 0.3rem;
  border-radius: 0.25rem;
  font-size: 0.8em;
}

table.dataTable mark {
  background-color: #ffd54f;
  color: #1f1f1f;
  padding: 0 0.1rem;
  border-radius: 0.2rem;
}

/* DataTable - Header */
table.dataTable thead {
  pointer-events: auto !important;
}

thead th {
  overflow: visible !important;
  position: relative;
  pointer-events: auto !important;
}

table.dataTable thead tr:first-child th {
  text-align: center;
  vertical-align: middle;
  position: relative;
  z-index: 10 !important;
  pointer-events: auto !important;
}

table.dataTable thead tr:nth-child(2) th {
  overflow: visible !important;
  pointer-events: auto !important;
  white-space: nowrap;
  z-index: 20 !important;
  position: relative;
}

table.dataTable thead tr:nth-child(2) th .multi-select {
  max-width: 100%;
}

table.dataTable thead tr:nth-child(2) th .multi-select-dropdown {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dataTables_scrollHead .table thead th {
  overflow: hidden;
  white-space: nowrap;
  vertical-align: middle;
}

/* DataTable - Scrolling */
.dataTables_scrollHead {
  overflow: hidden !important;
  width: 100% !important;
}

.dataTables_scrollHeadInner {
  overflow: hidden !important;
  width: 100% !important;
  transition: margin-left 0s !important;
  box-sizing: content-box !important;
}

.dataTables_scrollBody {
  overflow-x: auto !important;
  box-sizing: content-box !important;
  position: relative;
  z-index: 1 !important;
}

.dataTables_scrollHead table {
  transition: margin-left 0s !important;
}

/* DataTable - Controls */
div.dataTables_length,
div.dataTables_filter {
  display: flex;
  align-items: center;
  margin-bottom: 0.2rem;
}

div.dataTables_length {
  float: left;
}

div.dataTables_length label {
  color: var(--text-muted) !important;
}

div.dataTables_filter {
  float: right;
  text-align: right;
}

div.dataTables_wrapper div.dataTables_info {
  float: left;
  padding-top: 0.4em;
  color: var(--text-muted);
}

div.dataTables_paginate {
  float: right;
}

.dataTables_wrapper .row:last-child {
  margin-top: 0.5rem;
}

/* DataTable - Form Elements */
.dataTables_filter input[type="search"] {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.dataTables_filter input[type="search"]:focus {
  background-color: var(--bg-secondary);
  border-color: var(--accent-color);
  outline: none;
  box-shadow: none;
}

.dataTables_filter input[type="search"]::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.dataTables_filter input[type="search"]::-webkit-search-cancel-button,
.dataTables_filter input[type="search"]::-webkit-search-clear-button {
  cursor: pointer;
}

.dataTables_length select {
  cursor: pointer;
  background-color: var(--bg-secondary);
  color: var(--text-muted) !important;
  border-color: var(--border-color);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.dataTables_length select:focus {
  background-color: var(--bg-secondary);
  border-color: var(--accent-color);
  outline: none;
  box-shadow: none;
}

.dataTables_length select:hover {
  border-color: var(--accent-color);
  cursor: pointer;
}

/* Multi-Select Dropdown */
.multi-select {
  position: relative;
  width: 100%;
  max-width: 100%;
  pointer-events: auto !important;
  z-index: 100 !important;
}

.multi-select-dropdown {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  padding: 0 0.75rem;
  padding-right: 1.7rem;
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 38px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  user-select: none;
  pointer-events: auto !important;
  z-index: 100 !important;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  color: var(--text-secondary);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .multi-select-dropdown {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23b8b8b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E");
}

.multi-select-dropdown:hover {
  border-color: var(--accent-color);
  background-color: var(--hover-bg);
}

.dropdown-text {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1 1 auto;
  min-width: 0;
  width: 0;
  color: var(--text-secondary);
  font-weight: normal;
}

.dropdown-text.selected-values {
  max-width: none !important;
}

/* Multi-Select Options Menu */
body > .multi-select-options {
  position: fixed !important;
  background: var(--bg-secondary) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 0.375rem !important;
  max-height: 200px !important;
  overflow-y: auto !important;
  z-index: 10000 !important;
  box-shadow: 0 0.5rem 1rem var(--shadow-color) !important;
  display: none;
  min-width: 150px !important;
  transition: top 0.2s ease;
}

body > .multi-select-options.show {
  display: block !important;
}

.multi-select-option {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: normal;
  user-select: none;
  color: var(--text-primary);
}

.multi-select-option:hover {
  background-color: var(--hover-bg) !important;
}

.multi-select-option.selected {
  background-color: var(--accent-color) !important;
  color: white !important;
}

/* Active Filters Display */
.active-filters {
  display: none;
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 0.375rem;
  margin-bottom: 1rem;
  transition: background-color 0.3s ease;
}

/* Filter Badges */
.filter-badge {
  display: inline-block;
  background: var(--accent-color);
  color: white;
  padding: 0.25rem 0.5rem;
  margin: 0.125rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.filter-badge:hover {
  background: var(--accent-hover);
}

.filter-badge .remove {
  margin-left: 0.5rem;
  font-weight: bold;
}

/* Clear All Button */
.clear-all-btn {
  background: #dc3545;
  color: white;
  border: none;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
  cursor: pointer;
  margin-left: 0.5rem;
}

.clear-all-btn:hover {
  background: #bb2d3b;
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    padding: 0.5rem;
  }

  .page-search-input {
    min-width: 6rem;
    max-width: 8rem;
  }

  .container {
    padding-top: 1rem;
  }

  div.dataTables_length,
  div.dataTables_filter {
    float: none;
    text-align: left;
    justify-content: flex-start;
    width: 100%;
  }

  div.dataTables_info,
  div.dataTables_paginate {
    float: none;
    text-align: left;
    width: 100%;
    margin-bottom: 0.5rem;
  }
}

@media (max-width: 768px) {
  .page-header {
    flex-wrap: wrap;
    row-gap: 0.6rem;
  }

  .page-controls {
    margin-top: 0;
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }
}

@media (max-width: 650px) {
  .section-anchor {
    display: none;
  }
}

/* Dark Mode Toggle Button */
.theme-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  font-size: 1.1rem;
  color: var(--text-secondary);
  transition: color 0.3s ease, transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.theme-toggle:hover {
  color: var(--accent-color);
  transform: scale(1.1);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg);
}

.theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg);
}

[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg);
}

/* Dark Mode - Bootstrap Table Overrides */
[data-theme="dark"] .table {
  --bs-table-bg: var(--bg-secondary);
  --bs-table-color: var(--text-primary);
  --bs-table-border-color: var(--border-color);
  --bs-table-striped-bg: var(--table-stripe);
  --bs-table-striped-color: var(--text-primary);
  --bs-table-hover-bg: var(--hover-bg);
  --bs-table-hover-color: var(--text-primary);
}

[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: var(--table-stripe);
  color: var(--text-primary);
}

[data-theme="dark"] .table > thead {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

[data-theme="dark"] .table > thead th {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] .table > tbody td {
  border-color: var(--border-color);
}

/* Dark Mode - DataTables Overrides */
[data-theme="dark"] .dataTables_wrapper {
  color: var(--text-primary);
}

[data-theme="dark"] .dataTables_info,
[data-theme="dark"] .dataTables_length label,
[data-theme="dark"] .dataTables_filter label {
  color: var(--text-primary);
}

/* Pagination - Muted Style */
.page-link {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.page-item.active .page-link {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--accent-color);
  font-weight: bold;
}

[data-theme="dark"] .page-link {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-muted);
}

[data-theme="dark"] .page-link:hover {
  background-color: var(--hover-bg);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .page-item.active .page-link {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--accent-color);
}

[data-theme="dark"] .page-item.disabled .page-link {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-muted);
}

/* Dark Mode - Container */
[data-theme="dark"] .container h1 {
  color: var(--text-primary);
}

[data-theme="dark"] .text-muted {
  color: var(--text-muted) !important;
}

/* GitHub Icon */
.github-link {
  color: var(--text-secondary);
  transition: color 0.3s ease, transform 0.2s ease;
}

.github-link:hover {
  color: var(--accent-color);
  transform: scale(1.1);
}

/* Loading Indicator */
.loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}

.table-ready + .loading,
.loading.hidden {
  display: none;
}

/* Section Spacing */
h3 {
  margin-top: 1.5rem;
}