/* Neutral fallbacks — overridden by active scheme CSS */
:root {
  color-scheme: light;
  --bg-page: #f5f5f5;
  --bg-body-image: url(../img/grid.png);
  --bg-zettel: #fff;
  --bg-header: #e0e0e0;
  --bg-accent: #eee;
  --bg-code: #f5f5f5;

  --bg-tooltip: #333;
  --bg-kbd: #333;
  --text-primary: #333;
  --text-link: #0066cc;
  --text-header: #555;
  --text-code: #333;
  --text-muted: #999;
  --text-tooltip: #fff;
  --text-kbd: #fff;
  --text-link-code: #0066cc;
  --text-link-code-hover: #004499;
  --border-zettel: #ddd;
  --border-heading: #eee;
  --border-accent: #ddd;
  --border-code: #ddd;
  --border-hr: #ccc;
  --border-img: #ddd;
  --nav-from: #555;
  --nav-to: #666;
  --adm-note-text: #31708f;
  --adm-note-bg: #d9edf7;
  --adm-note-border: #bce8f1;
  --adm-warning-text: #8a6d3b;
  --adm-warning-bg: #fcf8e3;
  --adm-warning-border: #faebcc;
  --adm-danger-text: #a94442;
  --adm-danger-bg: #f2dede;
  --adm-danger-border: #ebccd1;

  /* Status */
  --status-error: #dc322f;
  --status-warning: #b58900;
  --status-success: #859900;

  /* Graph */
  --graph-type-fleeting: #e8a838;
  --graph-type-literature: #5b98d2;
  --graph-type-permanent: #6bb86b;
  --graph-maturity-draft: #e06c75;
  --graph-maturity-developing: #e8a838;
  --graph-maturity-evergreen: #6bb86b;
}

/* ===== Theme styles ===== */

.file-header a,
.file-header span {
  color: var(--text-link);
}

a.hidden-hyperlink {
  text-decoration: none;
}

a.hidden-hyperlink:hover {
  text-decoration: none;
  cursor: default;
}

.zettel-copy-btn,
.validation-badge {
  all: unset;
  display: inline;
  font: inherit;
  color: inherit;
}

[data-copy-value] {
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='5' width='14' height='16' rx='2' fill='%23fff' stroke='none'/%3E%3Crect x='9' y='3' width='6' height='4' rx='2' fill='%23fff' stroke='none'/%3E%3Cpath d='M9 5h-2a2 2 0 0 0 -2 2v12a2 2 0 0 0 2 2h3m9 -9v-5a2 2 0 0 0 -2 -2h-2'/%3E%3Cpath d='M13 17v-1a1 1 0 0 1 1 -1h1m3 0h1a1 1 0 0 1 1 1v1m0 3v1a1 1 0 0 1 -1 1h-1m-3 0h-1a1 1 0 0 1 -1 -1v-1'/%3E%3Cpath d='M9 3m0 2a2 2 0 0 1 2 -2h2a2 2 0 0 1 2 2v0a2 2 0 0 1 -2 2h-2a2 2 0 0 1 -2 -2z'/%3E%3C/svg%3E") 12 12, copy;
}

[data-theme="dark"] [data-copy-value] {
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23ccc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='5' width='14' height='16' rx='2' fill='%23444' stroke='none'/%3E%3Crect x='9' y='3' width='6' height='4' rx='2' fill='%23444' stroke='none'/%3E%3Cpath d='M9 5h-2a2 2 0 0 0 -2 2v12a2 2 0 0 0 2 2h3m9 -9v-5a2 2 0 0 0 -2 -2h-2'/%3E%3Cpath d='M13 17v-1a1 1 0 0 1 1 -1h1m3 0h1a1 1 0 0 1 1 1v1m0 3v1a1 1 0 0 1 -1 1h-1m-3 0h-1a1 1 0 0 1 -1 -1v-1'/%3E%3Cpath d='M9 3m0 2a2 2 0 0 1 2 -2h2a2 2 0 0 1 2 2v0a2 2 0 0 1 -2 2h-2a2 2 0 0 1 -2 -2z'/%3E%3C/svg%3E") 12 12, copy;
}

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-tooltip);
  color: var(--text-tooltip);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-weight: normal;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

[data-tooltip]:hover::after {
  opacity: 1;
}

h1 {
  color: var(--text-link);
}

h1,
h2,
h3 {
  padding-bottom: 0.2em;
  border-bottom: 1px solid var(--border-heading);
  margin-bottom: 0.6em;
}

svg.clickable {
  cursor: pointer;
}

.zettel-edit-dropdown {
  position: absolute;
  right: 0;
  margin-top: 0.2em;
  background: var(--bg-zettel);
  border: 1px solid var(--border-accent);
  border-radius: 0.25rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  z-index: 100;
  min-width: 8.75rem;
  display: flex;
  flex-direction: column;
}

.zettel-edit-dropdown-item {
  display: block;
  width: 100%;
  padding: 0.4em 0.8em;
  border: none;
  background: none;
  color: var(--text-primary);
  text-align: left;
  font-size: 0.85em;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.zettel-edit-dropdown-item:hover {
  background: var(--bg-accent);
  color: var(--text-link);
  text-decoration: none;
}

.zettel {
  margin-top: 1%;
  margin-bottom: 1%;
  padding: 0;
  border: 1px solid var(--border-zettel);
  border-radius: 0.4375rem;
  background-color: var(--bg-zettel);
}

.file-header {
  background-color: var(--bg-header);
  border-top-left-radius: 0.375rem;
  border-top-right-radius: 0.375rem;
  padding: 2.5em;
  padding-top: 0.2em;
  padding-bottom: 0.7em;
  min-height: 2.5rem;
  font-size: small;
  color: var(--text-header);
}

.file-header .row {
  margin-top: 0.25em;
}

.file-header svg {
  display: inline-block;
  width: 1em;
  height: 1em;
  font-size: inherit;
  color: inherit;
  vertical-align: -0.125em;
  fill: currentColor;
}

.file-header .date {
  padding-right: 0;
  position: relative;
}

.file-body {
  padding: 2em;
  padding-top: 1em;
  padding-bottom: 1.5em;
}

.codehilite,
.highlight,
pre:has(> code) {
  position: relative;
}

.codehilite,
.highlight {
  border: 1px solid var(--border-zettel);
  border-radius: 0.25rem;
  padding: 0.7em;
  margin: 0.3em;
  margin-bottom: 1rem;
}

.copy-btn {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  background: var(--bg-accent);
  border: 1px solid var(--border-accent);
  border-radius: 0.1875rem;
  padding: 0.125rem 0.375rem;
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1;
  opacity: 0;
  transition: opacity 0.2s;
  color: var(--text-primary);
}

.copy-btn:hover {
  background: var(--border-accent);
}

.codehilite:hover .copy-btn,
.highlight:hover .copy-btn,
pre:has(> code):hover .copy-btn {
  opacity: 1;
}

.file-references {
  background-color: var(--bg-accent);
  border-top: 1px solid var(--border-accent);
  border-bottom-left-radius: 0.375rem;
  border-bottom-right-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  font-style: italic;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

@media (min-width: 48rem) {
  .file-references {
    flex-direction: row;
    gap: 2rem;
  }
}

.file-ref-section {
  flex: 1;
  display: flex;
  align-items: flex-start;
  min-width: 0;
}

.file-references h6 {
  margin: 0 0.5rem 0 0;
  line-height: 1.4;
  flex-shrink: 0;
  font-size: 1em;
}

.file-references h6 .fa {
  font-size: 1.1em;
}

.backlinks h6 .fa::before {
  content: none;
}

.backlinks h6 .fa {
  display: inline-block;
  width: 1.1em;
  height: 1.1em;
  background-color: currentColor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'/%3E%3Cpath d='M12 15v3.586a1 1 0 0 1-1.707.707l-6.586-6.586a1 1 0 0 1 0-1.414l6.586-6.586a1 1 0 0 1 1.707.707v3.586h3v6h-3'/%3E%3Cpath d='M21 15v-6'/%3E%3Cpath d='M18 15v-6'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'/%3E%3Cpath d='M12 15v3.586a1 1 0 0 1-1.707.707l-6.586-6.586a1 1 0 0 1 0-1.414l6.586-6.586a1 1 0 0 1 1.707.707v3.586h3v6h-3'/%3E%3Cpath d='M21 15v-6'/%3E%3Cpath d='M18 15v-6'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  vertical-align: middle;
}

.file-references ul {
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 1;
}

.file-references li {
  line-height: 1.4;
  margin-bottom: 0.1rem;
}

/* Validation badge */
.validation-badge {
  color: var(--status-warning);
  margin-left: 0.5em;
  font-size: 0.9em;
  position: relative;
  cursor: help;
  display: inline-block;
}

.validation-popover {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-tooltip);
  color: var(--text-tooltip);
  padding: 0.5rem;
  border-radius: 0.25rem;
  min-width: 15rem;
  max-width: 25rem;
  z-index: 100;
  margin-top: 0.25rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  text-align: left;
  line-height: 1.4;
}

.validation-badge:hover .validation-popover,
.validation-badge:focus .validation-popover,
.validation-badge:focus-within .validation-popover {
  display: block;
}

.validation-popover ul {
  margin: 0;
  padding: 0 0 0 1.2rem;
  list-style-type: disc;
}

.validation-popover li {
  margin-bottom: 0.25rem;
  font-size: 0.85rem;
}

.validation-popover li:last-child {
  margin-bottom: 0;
}

/* Note type & maturity badges */
.zettel-badges {
  display: flex;
  gap: 0.6em;
  align-items: center;
}

.zettel-type-badge,
.zettel-maturity-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.8em;
  padding: 0.1em 0.5em;
  border-radius: 0.75em;
  background: var(--bg-accent);
  color: var(--text-header);
}

.zettel-type-badge svg {
  width: 0.9em;
  height: 0.9em;
}

.maturity-dot {
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
  background: var(--text-muted);
}

.zettel-maturity-badge[data-maturity="draft"] .maturity-dot {
  background: var(--status-error);
}

.zettel-maturity-badge[data-maturity="developing"] .maturity-dot {
  background: var(--status-warning);
}

.zettel-maturity-badge[data-maturity="evergreen"] .maturity-dot {
  background: var(--status-success);
}

/* MOC card styling */
.moc-link-count {
  font-size: 0.8em;
  color: var(--text-muted);
  font-style: italic;
}

.moc-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.8em;
  color: var(--text-muted);
}

.moc-breadcrumb a {
  color: var(--text-link);
}

/* Sequence (Folgezettel) navigation */
.sequence-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.8em;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.sequence-breadcrumb a {
  color: var(--text-link);
}

.sequence-breadcrumb strong {
  color: var(--text-header);
}

.sequence-branches {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.8em;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.sequence-branches a {
  color: var(--text-link);
}

/* Sequence tree view */
.sequence-tree-container {
  border-top: 1px solid var(--border-accent);
  padding: 0.5rem 2em;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-header);
}

.sequence-tree summary {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: 0.8em;
  color: var(--text-header);
}

.sequence-tree-list,
.sequence-tree-list ul {
  margin: 0.25em 0 0 0;
  padding-left: 1.2em;
  list-style: none;
}

.sequence-tree-list li {
  line-height: 1.8;
}

.sequence-tree-list .current strong {
  color: var(--text-primary);
}

.sequence-tree-list a {
  color: var(--text-link);
}

/* Editor buttons */
.editor-btn {
  margin-left: 0.3em;
  padding: 0.1em 0.4em;
  font-size: 0.8em;
}

/* Token dialog */
.token-warning {
  font-size: 0.85em;
  color: var(--text-muted);
  margin-bottom: 1em;
}

.token-warning .fa {
  margin-right: 0.3em;
}

.token-help {
  font-size: 0.85em;
  margin-top: 0.5em;
}

#zettel-token-input {
  font-family: monospace;
  margin-top: 0.3em;
}

/* Toast notifications */
.zettel-toast {
  position: fixed;
  bottom: 1.5em;
  left: 50%;
  transform: translateX(-50%) translateY(1em);
  background: var(--bg-header);
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
  border-radius: 0.25rem;
  padding: 0.6em 1.2em;
  font-size: 0.9em;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

.zettel-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.zettel-toast-error {
  border-color: var(--adm-danger-text);
  color: var(--adm-danger-text);
}

/* Settings modal */
.scheme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(7.5rem, 100%), 1fr));
  gap: 0.75em;
}

.scheme-card {
  cursor: pointer;
  border: 2px solid var(--border-zettel);
  border-radius: 0.375rem;
  padding: 0.5em;
  text-align: center;
  transition: border-color 0.15s;
}

.scheme-card:hover {
  border-color: var(--text-link);
}

.scheme-card.active {
  border-color: var(--text-link);
  box-shadow: 0 0 0 1px var(--text-link);
}

.scheme-swatch {
  display: flex;
  height: 2em;
  border-radius: 0.1875rem;
  overflow: hidden;
}

.swatch-strip {
  flex: 1;
}

.scheme-label {
  display: block;
  margin-top: 0.3em;
  font-size: 0.8em;
  color: var(--text-primary);
}

.modal-body h5 {
  font-weight: 700;
}

.settings-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.settings-section-header h5 {
  margin: 0;
}

.dark-mode-toggle-group {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.toggle-label {
  font-size: 0.85em;
  color: var(--text-muted);
  user-select: none;
}

.dark-mode-toggle {
  position: relative;
  cursor: pointer;
  display: inline-block;
}

.dark-mode-toggle input {
  position: absolute;
  width: 3.25rem;
  height: 1.75rem;
  margin: 0;
  opacity: 0.01;
  cursor: pointer;
  z-index: 1;
}

.toggle-track {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 3.25rem;
  height: 1.75rem;
  border-radius: 0.875rem;
  background: var(--bg-accent, #ddd);
  transition: background 0.2s;
}

.toggle-icon {
  position: absolute;
  font-size: 0.875rem;
  line-height: 1;
  transition: opacity 0.2s;
}

.toggle-sun {
  left: 0.375rem;
  opacity: 1;
}

.toggle-moon {
  right: 0.7rem;
  font-size: 1.125rem;
  opacity: 0.4;
}

.toggle-thumb {
  position: absolute;
  left: 0.125rem;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--bg-zettel, #fff);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  transition: transform 0.2s;
}

.dark-mode-toggle input:checked ~ .toggle-track {
  background: var(--bg-accent, #555);
}

.dark-mode-toggle input:checked ~ .toggle-track .toggle-sun {
  opacity: 0.4;
}

.dark-mode-toggle input:checked ~ .toggle-track .toggle-moon {
  opacity: 1;
}

.dark-mode-toggle input:checked ~ .toggle-track .toggle-thumb {
  transform: translateX(1.5rem);
}

.code-theme-header {
  margin-top: 1.5em;
}

.code-theme-header .form-control {
  width: auto;
}

.hljs-preview {
  margin-top: 0.5em;
  border: 1px solid var(--border-code);
  border-radius: 0.25rem;
  padding: 0.7em;
  overflow: auto;
}

/* Color scheme gallery */
.gallery-section {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(11.25rem, 100%), 1fr));
  gap: 1em;
  margin-bottom: 1em;
}

.gallery-card {
  border: 1px solid var(--border-zettel);
  border-radius: 0.375rem;
  padding: 1em;
  background: var(--bg-zettel);
}

.gallery-page {
  padding-top: 2em;
}

.gallery-card h3 {
  margin-bottom: 0.5em;
}

.gallery-label {
  font-size: 0.8em;
  margin-top: 0.5em;
}

.gallery-label--dark {
  margin-top: 0.3em;
}

.gallery-card .btn {
  margin-top: 0.5em;
}

#gallery-grid > h2 {
  margin-top: 1.5em;
}

.gallery-category {
  display: inline-block;
  font-size: 0.7em;
  padding: 0.2em 0.5em;
  border-radius: 0.1875rem;
  background: var(--bg-accent);
  color: var(--text-muted);
}

/* Backlink context snippets */
.backlink-snippet {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  line-height: 1.4;
  font-style: italic;
}

.backlink-snippet mark {
  background: none;
  color: var(--text-link);
  font-style: normal;
  font-weight: 600;
}

/* Suggestion reason label */
.suggestion-reason {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 0.25rem;
}