/* CodeMirror theme overrides for dark LaTeX editor */
.CodeMirror {
  background: var(--bg) !important;
  color: var(--text) !important;
}

.CodeMirror-gutters {
  background: var(--gutter) !important;
  border-right: 1px solid var(--border) !important;
}

.CodeMirror-linenumber {
  color: var(--text3) !important;
  font-size: 11px !important;
}

.CodeMirror-cursor {
  border-left: 2px solid var(--accent) !important;
}

.CodeMirror-selected { background: rgba(110,231,183,0.12) !important; }
.CodeMirror-focused .CodeMirror-selected { background: rgba(110,231,183,0.15) !important; }
.CodeMirror-activeline-background { background: rgba(255,255,255,0.025) !important; }

.CodeMirror-matchingbracket {
  color: var(--accent) !important;
  border-bottom: 1px solid var(--accent);
  background: rgba(110,231,183,0.08);
}

/* Syntax highlighting for stex mode */
.cm-s-material-darker .cm-keyword { color: #c084fc; }
.cm-s-material-darker .cm-tag { color: #67e8f9; }
.cm-s-material-darker .cm-bracket { color: #fde68a; }
.cm-s-material-darker .cm-atom { color: #fb923c; }
.cm-s-material-darker .cm-comment { color: #4b5268; font-style: italic; }
.cm-s-material-darker .cm-string { color: #86efac; }
.cm-s-material-darker .cm-variable { color: var(--text); }
.cm-s-material-darker .cm-builtin { color: #a78bfa; }

/* ── Error gutter marker ── */
.error-gutter {
  width: 12px;
}

.error-gutter-marker {
  color: var(--error);
  font-size: 10px;
  line-height: 1;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s;
}

.error-gutter-marker:hover {
  transform: scale(1.3);
}

/* ── Error line background highlight ── */
.error-line-highlight {
  background: rgba(248,113,113,0.06) !important;
  border-left: 2px solid var(--error);
}

/* ── Error line pulse animation (on jump) ── */
.error-line-pulse {
  animation: errorPulse 1.5s ease-out;
}

@keyframes errorPulse {
  0%   { background: rgba(248,113,113,0.25) !important; }
  30%  { background: rgba(248,113,113,0.15) !important; }
  100% { background: transparent !important; }
}

/* ── Inline error widget (below error line) ── */
.cm-error-widget {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 12px 6px 36px;
  background: rgba(248,113,113,0.06);
  border-left: 2px solid var(--error);
  border-bottom: 1px solid rgba(248,113,113,0.1);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  line-height: 1.5;
  color: #fca5a5;
  animation: widgetSlideIn 0.2s ease-out;
}

@keyframes widgetSlideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cm-error-widget-icon {
  color: var(--error);
  font-size: 10px;
  flex-shrink: 0;
  margin-top: 1px;
}

.cm-error-widget-text {
  flex: 1;
  word-break: break-word;
}

.cm-error-widget-dismiss {
  color: var(--text3);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 0 2px;
  flex-shrink: 0;
  transition: color 0.15s;
}

.cm-error-widget-dismiss:hover {
  color: var(--text);
}

/* ── Clickable log lines ── */
.log-line.clickable {
  cursor: pointer;
  transition: background 0.1s;
}

.log-line.clickable:hover {
  background: var(--surface2);
}

.log-line-ref {
  display: inline-block;
  background: rgba(248,113,113,0.12);
  color: var(--error);
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
  margin-right: 6px;
  font-family: 'JetBrains Mono', monospace;
  vertical-align: middle;
}

.log-line.warn .log-line-ref {
  background: rgba(251,146,60,0.12);
  color: var(--warn);
}

/* ── Status bar error count ── */
.sb-errors {
  color: var(--error) !important;
  cursor: pointer;
  transition: opacity 0.15s;
}

.sb-errors:hover {
  opacity: 0.8;
}

/* ── Error navigation in log header ── */
.error-nav {
  display: none;
  align-items: center;
  gap: 2px;
  margin-left: 8px;
}

.error-nav-btn {
  width: 20px;
  height: 20px;
  border-radius: 3px;
  border: none;
  background: none;
  color: var(--text3);
  font-size: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  font-family: 'DM Sans', sans-serif;
}

.error-nav-btn:hover {
  background: var(--surface2);
  color: var(--text);
}

.error-count {
  font-size: 9px;
  font-weight: 700;
  color: var(--error);
  padding: 1px 6px;
  background: rgba(248,113,113,0.12);
  border-radius: 3px;
  display: none;
}

/* ── Autocomplete popup ── */
.CodeMirror-hints {
  background: var(--surface2) !important;
  border: 1px solid var(--border2) !important;
  border-radius: 8px !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5) !important;
  font-family: 'DM Sans', 'JetBrains Mono', monospace !important;
  font-size: 12px !important;
  padding: 4px 0 !important;
  max-height: 280px !important;
  min-width: 300px !important;
  overflow-y: auto;
}

.CodeMirror-hint {
  color: var(--text2) !important;
  padding: 5px 12px !important;
  line-height: 1.4 !important;
  white-space: nowrap !important;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}

.CodeMirror-hint-active {
  background: rgba(110,231,183,0.1) !important;
  color: var(--accent) !important;
}

/* Category-specific colors for hint icons */
.hint-math .CodeMirror-hint-active,
.CodeMirror-hint.hint-math:hover { color: var(--accent2) !important; }
.hint-greek .CodeMirror-hint-active,
.CodeMirror-hint.hint-greek:hover { color: #67e8f9 !important; }
.hint-section .CodeMirror-hint-active,
.CodeMirror-hint.hint-section:hover { color: #c084fc !important; }
.hint-format .CodeMirror-hint-active,
.CodeMirror-hint.hint-format:hover { color: #fb923c !important; }

/* ── Snippet tab-stop fields ── */
.cm-snippet-field {
  background: rgba(129,140,248,0.08);
  border-bottom: 1px dashed rgba(129,140,248,0.3);
  border-radius: 2px;
}

.cm-snippet-active {
  background: rgba(110,231,183,0.15) !important;
  border-bottom-color: var(--accent) !important;
}

/* ── Light theme: CodeMirror overrides ── */
[data-theme="light"] .CodeMirror-selected { background: rgba(6,150,105,0.12) !important; }
[data-theme="light"] .CodeMirror-focused .CodeMirror-selected { background: rgba(6,150,105,0.18) !important; }
[data-theme="light"] .CodeMirror-activeline-background { background: rgba(0,0,0,0.03) !important; }
[data-theme="light"] .CodeMirror-matchingbracket {
  color: #059669 !important;
  border-bottom-color: #059669;
  background: rgba(6,150,105,0.08);
}

/* Light theme syntax colors (default theme) */
[data-theme="light"] .cm-s-default .cm-keyword { color: #7c3aed; }
[data-theme="light"] .cm-s-default .cm-tag { color: #0891b2; }
[data-theme="light"] .cm-s-default .cm-bracket { color: #b45309; }
[data-theme="light"] .cm-s-default .cm-atom { color: #c2410c; }
[data-theme="light"] .cm-s-default .cm-comment { color: #94a3b8; font-style: italic; }
[data-theme="light"] .cm-s-default .cm-string { color: #059669; }
[data-theme="light"] .cm-s-default .cm-variable { color: #1e293b; }
[data-theme="light"] .cm-s-default .cm-builtin { color: #6366f1; }

/* Light theme autocomplete popup */
[data-theme="light"] .CodeMirror-hints {
  background: #fff !important;
  border-color: #dde0e8 !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12) !important;
}
[data-theme="light"] .CodeMirror-hint { color: #475569 !important; }
[data-theme="light"] .CodeMirror-hint-active {
  background: rgba(6,150,105,0.08) !important;
  color: #059669 !important;
}

/* Light theme snippet fields */
[data-theme="light"] .cm-snippet-field {
  background: rgba(99,102,241,0.08);
  border-bottom-color: rgba(99,102,241,0.3);
}
[data-theme="light"] .cm-snippet-active {
  background: rgba(6,150,105,0.12) !important;
  border-bottom-color: #059669 !important;
}

/* Light theme error widget */
[data-theme="light"] .cm-error-widget {
  background: rgba(220,38,38,0.04);
  color: #b91c1c;
}

/* Scrollbar styling */
.CodeMirror-vscrollbar::-webkit-scrollbar,
.CodeMirror-hscrollbar::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.CodeMirror-vscrollbar::-webkit-scrollbar-track,
.CodeMirror-hscrollbar::-webkit-scrollbar-track {
  background: transparent;
}

.CodeMirror-vscrollbar::-webkit-scrollbar-thumb,
.CodeMirror-hscrollbar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.CodeMirror-vscrollbar::-webkit-scrollbar-thumb:hover,
.CodeMirror-hscrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--border2);
}

/* ── AI Diff Review ── */
.ai-diff-pending {
  opacity: 0.5;
}
.ai-diff-remove {
  background: rgba(239, 68, 68, 0.15);
  text-decoration: line-through;
  color: var(--error, #f87171);
}
.ai-diff-add {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
}
[data-theme="light"] .ai-diff-remove { background: rgba(239, 68, 68, 0.1); color: #dc2626; }
[data-theme="light"] .ai-diff-add { background: rgba(34, 197, 94, 0.1); color: #16a34a; }

.ai-diff-actions {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; margin: 2px 0;
  background: var(--surface2, #1c1e28);
  border: 1px solid var(--border, #2a2d3e);
  border-radius: 6px;
}
.ai-diff-accept, .ai-diff-reject {
  border: none; border-radius: 4px;
  font-size: 11px; font-weight: 600;
  padding: 4px 12px; cursor: pointer;
  transition: filter 0.1s;
}
.ai-diff-accept {
  background: #22c55e; color: #fff;
}
.ai-diff-accept:hover { filter: brightness(1.15); }
.ai-diff-reject {
  background: var(--surface3, #222533);
  color: var(--text2, #8b8fa8);
  border: 1px solid var(--border, #2a2d3e);
}
.ai-diff-reject:hover { background: rgba(239,68,68,0.15); color: var(--error, #f87171); }
.ai-diff-hint {
  font-size: 10px; color: var(--text3, #555870);
  margin-left: auto;
}

[data-theme="light"] .ai-diff-actions { background: #f8fafc; border-color: #e2e8f0; }
[data-theme="light"] .ai-diff-reject { background: #f1f5f9; color: #64748b; border-color: #e2e8f0; }
[data-theme="light"] .ai-diff-reject:hover { background: rgba(239,68,68,0.08); color: #dc2626; }

/* ── Image drag-drop overlay ── */
.CodeMirror.image-drop-active {
  position: relative;
}
.CodeMirror.image-drop-active::after {
  content: 'Drop image here';
  position: absolute;
  inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99, 102, 241, 0.08);
  border: 2px dashed var(--primary, #6366f1);
  border-radius: 6px;
  color: var(--primary, #6366f1);
  font-size: 1rem; font-weight: 600;
  pointer-events: none;
  animation: drop-pulse 1.2s ease infinite;
}
@keyframes drop-pulse {
  0%, 100% { background: rgba(99, 102, 241, 0.06); }
  50% { background: rgba(99, 102, 241, 0.14); }
}

/* ── Selection Popup ── */
.sel-popup {
  position: fixed;
  z-index: 9999;
  display: none;
  align-items: center;
  gap: 2px;
  padding: 3px 4px;
  background: var(--surface2, #1e293b);
  border: 1px solid var(--border, #334155);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35), 0 2px 6px rgba(0,0,0,0.2);
  font-size: 0.75rem;
  animation: sel-popup-in 0.12s ease;
}
.sel-popup.visible { display: flex; }
@keyframes sel-popup-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.sel-popup button {
  background: none; border: none;
  color: var(--text, #cbd5e1);
  padding: 4px 8px; border-radius: 5px;
  cursor: pointer; font-size: 0.75rem; font-weight: 500;
  white-space: nowrap; transition: all 0.1s;
}
.sel-popup button:hover {
  background: var(--primary, #6366f1);
  color: #fff;
}
.sel-divider {
  width: 1px; height: 16px;
  background: var(--border, #334155);
  flex-shrink: 0;
}
.sel-translate-wrap {
  display: flex; align-items: center; gap: 0;
}
.sel-lang-picker {
  background: transparent; border: none;
  color: var(--text-muted, #64748b);
  font-size: 0.625rem; cursor: pointer;
  padding: 2px 0; width: 32px;
  appearance: none; -webkit-appearance: none;
}
.sel-lang-picker:focus { outline: none; color: var(--text, #cbd5e1); }
.sel-lang-picker option { background: var(--surface2, #1e293b); color: var(--text, #cbd5e1); }

.sel-popup button[data-sel-action="move-to-file"] {
  color: #22d3ee;
}
.sel-popup button[data-sel-action="move-to-file"]:hover {
  background: #0891b2; color: #fff;
}
/* Chemistry "Render" dropdown trigger */
.sel-popup .sel-mol-btn {
  color: #34d399;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.sel-popup .sel-mol-btn:hover { background: #059669; color: #fff; }
.sel-popup .sel-mol-caret { font-size: 0.7em; opacity: 0.85; }

/* Σ Solve — math inline solver dropdown */
.sel-popup .sel-math-btn {
  color: #fbbf24;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.sel-popup .sel-math-btn:hover { background: #d97706; color: #fff; }
.sel-popup .sel-math-caret { font-size: 0.7em; opacity: 0.85; }

.sel-math-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 240px;
  background: var(--surface2, #1e293b);
  border: 1px solid var(--border, #334155);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(0,0,0,0.35);
  padding: 4px;
  display: none;
  z-index: 10000;
}
.sel-math-wrap.open .sel-math-menu { display: block; }
.sel-math-menu button {
  display: block; width: 100%; text-align: left;
  background: transparent; border: 0; border-radius: 6px;
  padding: 8px 10px; color: #e2e8f0; cursor: pointer;
  font: inherit; line-height: 1.3;
}
.sel-math-menu button b { display: block; font-weight: 600; font-size: 0.85rem; color: #fbbf24; }
.sel-math-menu button span { display: block; font-size: 0.72rem; opacity: 0.65; margin-top: 2px; }
.sel-math-menu button:hover { background: rgba(251, 191, 36, 0.15); }
.sel-math-menu button:hover b { color: #fcd34d; }

[data-theme="light"] .sel-popup .sel-math-btn { color: #b45309; }
[data-theme="light"] .sel-popup .sel-math-btn:hover { background: #b45309; color: #fff; }
[data-theme="light"] .sel-math-menu {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 12px 28px rgba(15,23,42,0.12);
}
[data-theme="light"] .sel-math-menu button { color: #1e293b; }
[data-theme="light"] .sel-math-menu button b { color: #b45309; }
[data-theme="light"] .sel-math-menu button:hover { background: rgba(180, 83, 9, 0.10); }
[data-theme="light"] .sel-math-menu button:hover b { color: #92400e; }

/* Submenu — opens below the trigger */
.sel-mol-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 220px;
  background: var(--surface2, #1e293b);
  border: 1px solid var(--border, #334155);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(0,0,0,0.35);
  padding: 4px;
  display: none;
  z-index: 10000;
}
.sel-mol-wrap.open .sel-mol-menu { display: block; }
.sel-mol-menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 6px;
  padding: 8px 10px;
  color: #e2e8f0;
  cursor: pointer;
  font: inherit;
  line-height: 1.3;
}
.sel-mol-menu button b { display: block; font-weight: 600; font-size: 0.85rem; color: #34d399; }
.sel-mol-menu button span { display: block; font-size: 0.72rem; opacity: 0.65; margin-top: 2px; }
.sel-mol-menu button:hover { background: rgba(52, 211, 153, 0.15); }
.sel-mol-menu button:hover b { color: #6ee7b7; }
.sel-mol-menu button:hover span { opacity: 0.9; }

/* Light theme */
[data-theme="light"] .sel-popup {
  background: #fff;
  border-color: #e2e8f0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.08);
}
[data-theme="light"] .sel-popup button { color: #334155; }
[data-theme="light"] .sel-popup button:hover { background: #6366f1; color: #fff; }
[data-theme="light"] .sel-divider { background: #e2e8f0; }
[data-theme="light"] .sel-lang-picker { color: #94a3b8; }
[data-theme="light"] .sel-lang-picker option { background: #fff; color: #334155; }
[data-theme="light"] .sel-popup button[data-sel-action="move-to-file"] { color: #0891b2; }
[data-theme="light"] .sel-popup button[data-sel-action="move-to-file"]:hover { background: #0891b2; color: #fff; }
[data-theme="light"] .sel-popup .sel-mol-btn { color: #059669; }
[data-theme="light"] .sel-popup .sel-mol-btn:hover { background: #059669; color: #fff; }
[data-theme="light"] .sel-mol-menu {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 12px 28px rgba(15,23,42,0.12);
}
[data-theme="light"] .sel-mol-menu button { color: #1e293b; }
[data-theme="light"] .sel-mol-menu button b { color: #059669; }
[data-theme="light"] .sel-mol-menu button:hover { background: rgba(5, 150, 105, 0.10); }
[data-theme="light"] .sel-mol-menu button:hover b { color: #047857; }