/* ==========================================================================
   Related References — Interactive Toolbar & Enhancement Styles
   ========================================================================== */

/* ---- Toolbar ---- */

.ref-toolbar {
  margin-bottom: 0.75em;
  margin-left: -0.7em;
  padding: 0.6em 0.7em 0.35em;
  font-size: 90%;
  border-left: thin solid var(--anim-start, aquamarine);
  background: transparent;
}

.ref-toolbar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6em;
  margin-bottom: 0.45em;
}

/* ---- Search ---- */

.ref-search-wrapper {
  position: relative;
  flex: 1 1 100%;
}

.ref-search-icon {
  position: absolute;
  left: 0.6em;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary, #64748b);
  font-size: 0.85em;
  pointer-events: none;
}

.ref-search {
  width: 100%;
  padding: 0.4em 2em 0.4em 1.8em;
  border: 1px solid var(--text-secondary, #cbd5e1);
  border-radius: 4px;
  font-size: 0.95em;
  font-family: inherit;
  background: var(--color-white, #fff);
  color: var(--text-primary, #1e293b);
  outline: none;
  transition: border-color 0.2s;
}

.ref-search:focus {
  border-color: var(--anim-start, aquamarine);
  box-shadow: 0 0 0 2px rgba(127, 255, 212, 0.25);
}

.ref-search-clear {
  position: absolute;
  right: 0.3em;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.2em;
  cursor: pointer;
  color: var(--text-secondary, #64748b);
  line-height: 1;
  padding: 0.15em 0.35em;
}

.ref-search-clear:hover {
  color: var(--text-primary, #1e293b);
}

/* ---- Filter labels ---- */

.ref-filter-label {
  display: block;
  font-size: 0.78em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary, #64748b);
  margin-bottom: 0.15em;
}

.ref-filter-label i {
  margin-right: 0.25em;
}

/* ---- Year filter ---- */

.ref-year-filter {
  flex: 0 0 auto;
}

.ref-year-inputs {
  display: flex;
  align-items: center;
  gap: 0.25em;
}

.ref-year-min,
.ref-year-max {
  width: 5.2em;
  padding: 0.25em 0.35em;
  border: 1px solid var(--text-secondary, #cbd5e1);
  border-radius: 3px;
  font-size: 0.9em;
  font-family: inherit;
  text-align: center;
  background: var(--color-white, #fff);
  color: var(--text-primary, #1e293b);
}

.ref-year-sep {
  color: var(--text-secondary, #64748b);
  font-size: 0.9em;
}

/* ---- Type filter ---- */

.ref-type-filter {
  flex: 1 1 auto;
  min-width: 10em;
}

.ref-type-select {
  width: 100%;
  padding: 0.25em 0.4em;
  border: 1px solid var(--text-secondary, #cbd5e1);
  border-radius: 3px;
  font-size: 0.9em;
  font-family: inherit;
  background: var(--color-white, #fff);
  color: var(--text-primary, #1e293b);
}

/* ---- Sort ---- */

.ref-sort-filter {
  flex: 0 0 auto;
}

.ref-sort-btns {
  display: flex;
  gap: 0.25em;
}

/* ---- Buttons (shared) ---- */

.ref-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.2em 0.55em;
  border: 1px solid var(--text-secondary, #cbd5e1);
  border-radius: 3px;
  background: transparent;
  color: var(--text-secondary, #64748b);
  font-size: 0.82em;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.ref-btn:hover {
  background: var(--bg-highlight, rgba(72, 187, 120, 0.12));
  color: var(--text-primary, #1e293b);
  border-color: var(--anim-start, aquamarine);
}

.ref-btn.active,
.ref-sort-btn.active {
  background: var(--bg-highlight, rgba(72, 187, 120, 0.18));
  color: var(--text-primary, #1e293b);
  border-color: var(--anim-start, aquamarine);
  font-weight: 600;
}

/* ---- Reset filters button ---- */

.ref-reset-filters {
  color: #dc2626;
  border-color: #dc2626;
  font-size: 0.82em;
  align-self: center;
}

.ref-reset-filters:hover {
  background: rgba(220, 38, 38, 0.10);
}

/* ---- Count & bulk actions row ---- */

.ref-count-row {
  justify-content: space-between;
}

.ref-count {
  font-size: 0.85em;
  color: var(--text-primary, #1e293b);
}

.ref-bulk-actions {
  display: flex;
  gap: 0.35em;
}

/* ---- Scopus query viewer panel ---- */

.ref-query-panel {
  margin-top: 0.5em;
  padding: 0.6em 0.8em;
  border: 1px solid var(--text-secondary, #cbd5e1);
  border-radius: 4px;
  background: var(--color-white, #fff);
  font-size: 0.88em;
}

.ref-query-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em 0.8em;
  align-items: baseline;
}

.ref-query-header {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8em;
  margin-bottom: 0.15em;
}

.ref-query-label {
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-primary, #1e293b);
}

.ref-query-code {
  display: block;
  width: 100%;
  margin: 0.25em 0 0.3em;
  padding: 0.4em 0.6em;
  background: #f1f5f9;
  border-radius: 3px;
  overflow-wrap: break-word;
  word-break: break-word;
  font-size: 0.92em;
  color: var(--text-primary, #1e293b);
}

.ref-query-details {
  font-size: 0.88em;
  color: var(--text-primary, #1e293b);
}

.ref-query-link {
  font-size: 0.88em;
  margin-left: auto;
  white-space: nowrap;
}

.ref-show-queries.active {
  background: var(--bg-highlight, rgba(72, 187, 120, 0.18));
  border-color: var(--anim-start, aquamarine);
}

/* ---- Query syntax highlighting ---- */

.ref-q-op {
  color: #d97706;
  font-weight: 700;
}

.ref-q-quote {
  color: #dc2626;
  font-weight: 700;
}

.ref-q-string {
  color: inherit;
}

/* ---- Reference items ---- */

/* No wrapper divs — original <p> elements get .ref-item class */

p.ref-item {
  position: relative;
  padding-bottom: 0.3em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

p.ref-item:hover {
  border-bottom-color: var(--anim-start, aquamarine);
}

/* ---- Action buttons (injected inline at end of <p>) ---- */

.reference-actions {
  display: inline-flex;
  gap: 0.4em;
  margin-left: 0.5em;
  text-indent: 0;
  vertical-align: middle;
}

.ref-abstract-btn[aria-expanded="true"] {
  background: var(--bg-highlight, rgba(72, 187, 120, 0.15));
  border-color: var(--anim-start, aquamarine);
}

.ref-copied {
  color: var(--anim-start, aquamarine) !important;
  border-color: var(--anim-start, aquamarine) !important;
}

/* ---- Abstract panel (sibling div after <p>) ---- */

/* Reduce gap between <p> and its abstract panel */
p.ref-item + .reference-abstract {
  margin-top: -0.6em;
}

.reference-abstract {
  display: none;
  margin: 0 0 1.2em 2em;
  padding: 0.6em 0.75em;
  background: var(--bg-highlight, rgba(72, 187, 120, 0.06));
  border-left: 3px solid var(--anim-start, aquamarine);
  border-radius: 0 4px 4px 0;
  font-size: 0.92em;
  line-height: 1.55;
  color: var(--text-primary, #1e293b);
  /* Override hanging indent for abstract text */
  text-indent: 0;
}

.reference-abstract.open {
  display: block;
}

.reference-abstract p {
  margin: 0;
  text-indent: 0;
  margin-left: 0;
}

.ref-loading {
  color: var(--text-secondary, #64748b);
  font-style: italic;
}

.ref-no-abstract {
  color: var(--text-secondary, #64748b);
}

/* ---- Search highlighting ---- */

mark.ref-highlight {
  background: rgba(255, 235, 59, 0.45);
  color: inherit;
  padding: 0 1px;
  border-radius: 2px;
}

body.dark mark.ref-highlight {
  background: rgba(250, 204, 21, 0.35);
}

/* ---- Dark mode overrides ---- */

body.dark .ref-search {
  background: var(--bg-button, #374151);
  border-color: var(--bg-button-secondary, #4b5563);
  color: var(--text-primary, #e2e8f0);
}

body.dark .ref-search:focus {
  border-color: var(--anim-start, aquamarine);
}

body.dark .ref-year-min,
body.dark .ref-year-max {
  background: var(--bg-button, #374151);
  border-color: var(--bg-button-secondary, #4b5563);
  color: var(--text-primary, #e2e8f0);
}

body.dark .ref-type-select {
  background: var(--bg-button, #374151);
  border-color: var(--bg-button-secondary, #4b5563);
  color: var(--text-primary, #e2e8f0);
}

body.dark .ref-btn {
  border-color: var(--bg-button-secondary, #4b5563);
  color: var(--text-secondary, #94a3b8);
}

body.dark .ref-btn:hover {
  background: var(--bg-button-hover, rgba(72, 187, 120, 0.2));
  color: var(--text-primary, #e2e8f0);
}

body.dark .ref-btn.active {
  background: var(--bg-button-hover, rgba(72, 187, 120, 0.25));
  color: var(--text-primary, #e2e8f0);
}

body.dark .reference-abstract {
  background: rgba(72, 187, 120, 0.08);
  color: var(--text-primary, #e2e8f0);
}

body.dark .ref-search-clear {
  color: var(--text-secondary, #94a3b8);
}

body.dark .ref-search-clear:hover {
  color: var(--text-primary, #e2e8f0);
}

body.dark .ref-query-panel {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
}

body.dark .ref-query-code {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}

body.dark .ref-q-op {
  color: #fbbf24;
}

body.dark .ref-q-quote {
  color: #f87171;
  font-weight: 700;
}

body.dark .ref-q-string {
  color: inherit;
}

body.dark .ref-reset-filters {
  color: #f87171;
  border-color: #f87171;
}

body.dark .ref-reset-filters:hover {
  background: rgba(248, 113, 113, 0.12);
}

/* ---- Responsive ---- */

@media (max-width: 600px) {
  .ref-filters-row {
    flex-direction: column;
    align-items: stretch;
  }

  .ref-year-filter,
  .ref-type-filter,
  .ref-sort-filter {
    width: 100%;
  }

  .ref-sort-btns {
    flex-wrap: wrap;
  }

  .reference-actions {
    margin-left: 0;
    flex-wrap: wrap;
  }

  .reference-abstract {
    margin-left: 0;
  }
}