/**
 * 123TinyTools Diff Checker — Styles
 * All selectors scoped under .tia-dc-wrap.
 * Tokens as CSS custom properties — scoped, never override theme globals.
 *
 * Dark mode: theme-class only. NO @media (prefers-color-scheme: dark).
 * OS preference alone would darken plugin surfaces while the WP page stays
 * light, creating a broken mixed appearance. Dark mode only activates when
 * the WP theme adds a dark class to <body> or <html>.
 *
 * Version: 2.1.2
 */

/* ──────────────────────────────────────────────────────────
   LIGHT TOKENS  (scoped to wrap — never pollute :root)
────────────────────────────────────────────────────────── */
.tia-dc-wrap {
  isolation: isolate;

  /* Brand — Text & Writing = blue */
  --tia-blue-50:  #EFF4FF;
  --tia-blue-100: #DBE8FF;
  --tia-blue-200: #B8D0FF;
  --tia-blue-400: #5B8DEF;
  --tia-blue-500: #4B7CF3;
  --tia-blue-600: #3461E8;

  /* Slate neutrals */
  --tia-slate-50:  #F8FAFD;
  --tia-slate-100: #F1F5F9;
  --tia-slate-200: #E4EAF4;
  --tia-slate-300: #CBD5E1;
  --tia-slate-400: #94A3B8;
  --tia-slate-500: #64748B;
  --tia-slate-600: #475569;
  --tia-slate-700: #334155;
  --tia-slate-800: #1E293B;
  --tia-slate-900: #0F172A;

  /* Semantic surfaces */
  --tia-bg:       #F8FAFD;
  --tia-surface:  #FFFFFF;
  --tia-border:   #E4EAF4;
  --tia-border-s: #CBD5E1;
  --tia-text:     #1E293B;
  --tia-text-body:#475569;
  --tia-text-muted:#64748B;  /* 5.9:1 on white — WCAG AA */

  /* State colours */
  --tia-success:       #22C55E;
  --tia-success-light: #DCFCE7;
  --tia-error:         #EF4444;
  --tia-error-light:   #FEE2E2;

  /* Diff-specific */
  --tia-dc-add-bg:      #F0FDF4;
  --tia-dc-add-text:    #15803D;
  --tia-dc-add-sign:    #16A34A;
  --tia-dc-add-word-bg: #DCFCE7;
  --tia-dc-add-word-fg: #14532D;
  --tia-dc-del-bg:      #FEF2F2;
  --tia-dc-del-text:    #B91C1C;
  --tia-dc-del-sign:    #EF4444;
  --tia-dc-del-word-bg: #FEE2E2;
  --tia-dc-del-word-fg: #7F1D1D;
  --tia-dc-ln-color:    #94A3B8;

  /* Shadows */
  --tia-shadow-sm: 0 1px 2px rgba(74,124,243,.04), 0 1px 3px rgba(0,0,0,.06);
  --tia-shadow-md: 0 4px 6px rgba(74,124,243,.06), 0 2px 4px rgba(0,0,0,.06);
  --tia-shadow-lg: 0 10px 20px rgba(74,124,243,.08), 0 4px 6px rgba(0,0,0,.05);

  /* Radii */
  --tia-r-sm:   6px;
  --tia-r-md:   10px;
  --tia-r-lg:   16px;
  --tia-r-xl:   24px;
  --tia-r-full: 9999px;

  /* Typography */
  --tia-font-h: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --tia-font-b: 'Inter', system-ui, -apple-system, sans-serif;
  --tia-font-m: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  box-sizing: border-box;
  font-family: var(--tia-font-b);
  color: var(--tia-text);
  line-height: 1.6;
}

.tia-dc-wrap *,
.tia-dc-wrap *::before,
.tia-dc-wrap *::after { box-sizing: border-box; }

/* ──────────────────────────────────────────────────────────
   DARK MODE — THEME-CLASS ONLY
   Overrides tokens; every component inherits through vars.
────────────────────────────────────────────────────────── */
.kt-dark-mode .tia-dc-wrap,
html.wp-dark-mode-active .tia-dc-wrap,
body.wp-dark-mode-active .tia-dc-wrap,
html[data-theme="dark"] .tia-dc-wrap,
.dark-mode .tia-dc-wrap,
body[data-theme="dark"] .tia-dc-wrap,
.is-dark .tia-dc-wrap {
  --tia-blue-50:  #172340;
  --tia-blue-100: #1E2F55;
  --tia-blue-200: #2A4480;
  --tia-surface:  #1E293B;
  --tia-bg:       #0F172A;
  --tia-slate-50: #162032;
  --tia-slate-100:#1E293B;
  --tia-slate-200:#334155;
  --tia-border:   #334155;
  --tia-border-s: #475569;
  --tia-text:     #F1F5F9;
  --tia-text-body:#94A3B8;
  --tia-text-muted:#64748B;
  --tia-shadow-sm:0 1px 2px rgba(0,0,0,.2), 0 1px 3px rgba(0,0,0,.3);
  --tia-shadow-md:0 4px 6px rgba(0,0,0,.25), 0 2px 4px rgba(0,0,0,.2);
  --tia-shadow-lg:0 10px 20px rgba(0,0,0,.3), 0 4px 6px rgba(0,0,0,.2);
  --tia-success-light:#052e16;
  --tia-error-light:  #450a0a;

  /* Diff dark overrides */
  --tia-dc-add-bg:      rgba(20, 83, 45, .3);
  --tia-dc-add-text:    #86EFAC;
  --tia-dc-add-word-bg: #14532D;
  --tia-dc-add-word-fg: #BBF7D0;
  --tia-dc-del-bg:      rgba(127, 29, 29, .3);
  --tia-dc-del-text:    #FCA5A5;
  --tia-dc-del-word-bg: #7F1D1D;
  --tia-dc-del-word-fg: #FCA5A5;
  --tia-dc-ln-color:    #475569;
}

/* ──────────────────────────────────────────────────────────
   WRAP
────────────────────────────────────────────────────────── */
.tia-dc-wrap { background: transparent; color: var(--tia-text); }

/* Theme-bleed protection via CSS vars */
.tia-dc-wrap .tia-dc-editor-card { background-color: var(--tia-surface); }
.tia-dc-wrap .tia-dc-toolbar      { background-color: var(--tia-slate-50); }
.tia-dc-wrap .tia-dc-compare-bar  { background-color: var(--tia-slate-50); }
.tia-dc-wrap .tia-dc-panel-label  { background-color: var(--tia-slate-50); color: var(--tia-text-body); }
.tia-dc-wrap .tia-dc-textarea     { background-color: var(--tia-slate-50);  color: var(--tia-text); }
.tia-dc-wrap .tia-dc-results      { background-color: var(--tia-surface); }
.tia-dc-wrap .tia-dc-stats-row    { background-color: var(--tia-slate-50); }
.tia-dc-wrap .tia-dc-output       { background-color: var(--tia-surface); }
.tia-dc-wrap .tia-dc-line--unch   { background-color: var(--tia-surface); }
.tia-dc-wrap .tia-dc-line--empty  { background-color: var(--tia-bg); }
.tia-dc-wrap .tia-dc-words-body   { color: var(--tia-text-body); }

/* Buttons */
.tia-dc-wrap .tia-btn {
  background-color: var(--tia-surface);
  color: var(--tia-text-body);
  border-color: var(--tia-border);
}
.tia-dc-wrap .tia-btn:hover {
  background-color: var(--tia-blue-50);
  border-color: var(--tia-blue-200);
  color: var(--tia-blue-500);
}
.tia-dc-wrap .tia-btn-primary {
  background-color: var(--tia-blue-400) !important;
  color: #fff !important;
  border-color: var(--tia-blue-400) !important;
}
.tia-dc-wrap .tia-btn-primary:hover {
  background-color: var(--tia-blue-500) !important;
  border-color: var(--tia-blue-500) !important;
}
.tia-dc-wrap .tia-dc-toggle-active {
  background-color: var(--tia-surface)      !important;
  color: var(--tia-blue-500)                !important;
  border-color: transparent                 !important;
  border-bottom-color: var(--tia-blue-400)  !important;
  font-weight: 600;
}

/* ──────────────────────────────────────────────────────────
   INTRO TEXT
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-intro {
  margin-bottom: 20px;
  font-size: 15px;
  color: var(--tia-text-body);
  line-height: 1.65;
}

/* ──────────────────────────────────────────────────────────
   TOOL HEADER
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.tia-dc-wrap .tia-dc-title {
  font-family: var(--tia-font-h);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  color: var(--tia-text);
  line-height: 1.2;
  letter-spacing: -.4px;
  margin: 0 0 4px;
  padding: 0;
  border: none;
}

.tia-dc-wrap .tia-dc-title span { color: var(--tia-blue-400); }

.tia-dc-wrap .tia-dc-subtitle {
  font-size: 14px;
  color: var(--tia-text-body);
  line-height: 1.5;
  margin: 0;
}

.tia-dc-wrap .tia-dc-badge {
  flex-shrink: 0;
  background: var(--tia-blue-50);
  border: 1px solid var(--tia-blue-200);
  color: var(--tia-blue-600);
  font-size: 11px;
  font-weight: 700;
  font-family: var(--tia-font-h);
  padding: 4px 10px;
  border-radius: var(--tia-r-full);
  letter-spacing: .5px;
  text-transform: uppercase;
  white-space: nowrap;
  margin-top: 4px;
  line-height: 1;
}

/* ──────────────────────────────────────────────────────────
   SVG ICON BASE
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-ic {
  width: 16px; height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ──────────────────────────────────────────────────────────
   BUTTONS
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--tia-font-b);
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--tia-r-md);
  border: 1px solid var(--tia-border);
  background: var(--tia-surface);
  color: var(--tia-text-body);
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  line-height: 1;
  white-space: nowrap;
  -webkit-appearance: none;
  appearance: none;
  outline: none;
}

.tia-dc-wrap .tia-btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(91,141,239,.25);
  border-color: var(--tia-blue-400);
}

.tia-dc-wrap .tia-btn:disabled {
  opacity: .38;
  cursor: not-allowed;
  pointer-events: none;
}

.tia-dc-wrap .tia-btn-primary {
  background: var(--tia-blue-400);
  border-color: var(--tia-blue-400);
  color: #fff;
  font-weight: 600;
  font-size: 13.5px;
  padding: 9px 22px;
  border-radius: var(--tia-r-full);
  box-shadow: 0 2px 12px rgba(91,141,239,.35);
}

.tia-dc-wrap .tia-btn-primary:hover {
  background: var(--tia-blue-500);
  border-color: var(--tia-blue-500);
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(91,141,239,.45);
}

.tia-dc-wrap .tia-btn-primary:active { transform: translateY(0); }

.tia-dc-wrap .tia-btn-danger-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--tia-text-muted);
}

.tia-dc-wrap .tia-btn-danger-ghost:hover {
  background: var(--tia-error-light);
  border-color: transparent;
  color: var(--tia-error);
}

/* ──────────────────────────────────────────────────────────
   EDITOR CARD
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-editor-card {
  background: var(--tia-surface);
  border-radius: var(--tia-r-xl);
  box-shadow: 0 2px 20px rgba(0,0,0,.07), 0 1px 4px rgba(0,0,0,.04);
  overflow: hidden;
  margin-bottom: 20px;
}

/* ── Top toolbar ── */
.tia-dc-wrap .tia-dc-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--tia-slate-50);
  border-bottom: 1px solid var(--tia-border);
  flex-wrap: wrap;
}

.tia-dc-wrap .tia-dc-toolbar-left  { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; align-items: center; }
.tia-dc-wrap .tia-dc-toolbar-right { display: flex; gap: 6px; align-items: center; }

/* Toggle groups (view / mode) — underline tab style */
.tia-dc-wrap .tia-dc-toggle-group {
  display: inline-flex;
  border: none;
  border-radius: 0;
  overflow: visible;
  background: transparent;
  border-bottom: 1px solid var(--tia-border);
}

.tia-dc-wrap .tia-dc-toggle-group .tia-btn {
  border-radius: 0;
  border: none;
  border-right: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 8px 12px;
  background: transparent;
}

.tia-dc-wrap .tia-dc-toggle-group .tia-btn:last-child { border-right: none; }

.tia-dc-wrap .tia-dc-toggle-group .tia-btn:hover {
  background-color: var(--tia-slate-100) !important;
  border-color: transparent !important;
  border-bottom-color: var(--tia-blue-200) !important;
  color: var(--tia-text-body) !important;
}

/* ── Two-panel input area ── */
.tia-dc-wrap .tia-dc-panels {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
}

.tia-dc-wrap .tia-dc-panel { display: flex; flex-direction: column; min-width: 0; }

.tia-dc-wrap .tia-dc-panels-divider { background: var(--tia-border); }

.tia-dc-wrap .tia-dc-panel-label {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px 8px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--tia-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  background: var(--tia-slate-50);
  border-bottom: 1px solid var(--tia-border);
  user-select: none;
}

.tia-dc-wrap .tia-dc-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tia-dc-wrap .tia-dc-dot--del { background: #EF4444; }
.tia-dc-wrap .tia-dc-dot--add { background: #16A34A; }

.tia-dc-wrap .tia-dc-panel-hint {
  font-size: 10.5px;
  font-weight: 400;
  color: var(--tia-text-muted);
  margin-left: auto;
  opacity: .7;
  text-transform: none;
  letter-spacing: 0;
}

.tia-dc-wrap .tia-dc-textarea {
  display: block;
  width: 100%;
  min-height: 220px;
  max-height: 520px;
  padding: 14px 16px;
  resize: none;
  border: none;
  outline: none;
  font-family: var(--tia-font-m);
  font-size: 13px;
  line-height: 1.7;
  color: var(--tia-text);
  background: var(--tia-slate-50);
  -webkit-font-smoothing: antialiased;
}

.tia-dc-wrap .tia-dc-textarea::placeholder { color: var(--tia-text-muted); }

/* ── Compare bar ── */
.tia-dc-wrap .tia-dc-compare-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--tia-slate-50);
  border-top: 1px solid var(--tia-border);
}

.tia-dc-wrap .tia-dc-compare-hint {
  font-size: 12px;
  color: var(--tia-text-muted);
}

.tia-dc-wrap .tia-dc-compare-hint kbd {
  display: inline-block;
  padding: 1px 5px;
  font-family: var(--tia-font-m);
  font-size: 11px;
  border: 1px solid var(--tia-border-s);
  border-radius: 4px;
  background: var(--tia-surface);
  color: var(--tia-text-body);
  line-height: 1.5;
}

/* ──────────────────────────────────────────────────────────
   RESULTS CARD
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-results {
  background: var(--tia-surface);
  border-radius: var(--tia-r-xl);
  box-shadow: 0 2px 20px rgba(0,0,0,.07), 0 1px 4px rgba(0,0,0,.04);
  overflow: hidden;
  margin-bottom: 24px;
}

/* Stats row */
.tia-dc-wrap .tia-dc-stats-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 11px 18px;
  background: var(--tia-slate-50);
  border-bottom: 1px solid var(--tia-border);
  font-size: 13px;
}

.tia-dc-wrap .tia-dc-stat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 700;
}

.tia-dc-wrap .tia-dc-stat--add  { color: var(--tia-dc-add-sign); }
.tia-dc-wrap .tia-dc-stat--del  { color: var(--tia-dc-del-sign); }
.tia-dc-wrap .tia-dc-stat--unch { color: var(--tia-text-muted); font-weight: 500; }
.tia-dc-wrap .tia-dc-stat-sep   { color: var(--tia-border-s); }

/* Identical / success alert */
.tia-dc-wrap .tia-dc-alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid transparent;
}

.tia-dc-wrap .tia-dc-alert--success {
  background: var(--tia-success-light);
  border-color: #BBF7D0;
  color: #15803D;
}

/* ──────────────────────────────────────────────────────────
   DIFF OUTPUT — shared line anatomy
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-output {
  font-family: var(--tia-font-m);
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
}

.tia-dc-wrap .tia-dc-line {
  display: flex;
  align-items: baseline;
  white-space: pre;
  min-width: 0;
}

.tia-dc-wrap .tia-dc-line--add   { background: var(--tia-dc-add-bg); }
.tia-dc-wrap .tia-dc-line--del   { background: var(--tia-dc-del-bg); }
.tia-dc-wrap .tia-dc-line--unch  { background: var(--tia-surface); }
.tia-dc-wrap .tia-dc-line--empty { background: var(--tia-bg); }

/* Line numbers */
.tia-dc-wrap .tia-dc-ln {
  min-width: 46px;
  padding: 2px 8px 2px 4px;
  text-align: right;
  color: var(--tia-dc-ln-color);
  font-size: 11px;
  user-select: none;
  flex-shrink: 0;
  border-right: 1px solid var(--tia-border);
}

/* Unified: +/− sign column */
.tia-dc-wrap .tia-dc-sign {
  width: 22px;
  text-align: center;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  padding: 2px 0;
  user-select: none;
}

.tia-dc-wrap .tia-dc-sign--add  { color: var(--tia-dc-add-sign); }
.tia-dc-wrap .tia-dc-sign--del  { color: var(--tia-dc-del-sign); }
.tia-dc-wrap .tia-dc-sign--unch { color: var(--tia-text-muted); }

/* Line text */
.tia-dc-wrap .tia-dc-text {
  flex: 1;
  padding: 2px 14px 2px 8px;
  white-space: pre-wrap;
  word-break: break-all;
  min-width: 0;
}

.tia-dc-wrap .tia-dc-line--add   .tia-dc-text { color: var(--tia-dc-add-text); }
.tia-dc-wrap .tia-dc-line--del   .tia-dc-text { color: var(--tia-dc-del-text); }
.tia-dc-wrap .tia-dc-line--unch  .tia-dc-text { color: var(--tia-text-body); }
.tia-dc-wrap .tia-dc-line--empty .tia-dc-text { color: transparent; pointer-events: none; }

/* ──────────────────────────────────────────────────────────
   SPLIT VIEW
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-split {
  display: grid;
  grid-template-columns: 1fr 2px 1fr;
  min-width: 0;
}

.tia-dc-wrap .tia-dc-split-panel   { overflow-x: auto; min-width: 0; }
.tia-dc-wrap .tia-dc-split-divider { background: var(--tia-border); }

/* ──────────────────────────────────────────────────────────
   WORDS MODE (two inline-highlight panels)
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-words-header {
  padding: 8px 16px;
  font-family: var(--tia-font-b);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--tia-border);
  user-select: none;
}

.tia-dc-wrap .tia-dc-words-header--del {
  background: var(--tia-dc-del-bg);
  color: var(--tia-dc-del-sign);
}

.tia-dc-wrap .tia-dc-words-header--add {
  background: var(--tia-dc-add-bg);
  color: var(--tia-dc-add-sign);
}

.tia-dc-wrap .tia-dc-words-body {
  padding: 16px 18px;
  font-size: 13px;
  line-height: 1.85;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 80px;
  color: var(--tia-text-body);
  background: var(--tia-surface);
}

.tia-dc-wrap .tia-dc-word--add {
  background: var(--tia-dc-add-word-bg);
  color: var(--tia-dc-add-word-fg);
  border-radius: 3px;
  padding: 0 2px;
}

.tia-dc-wrap .tia-dc-word--del {
  background: var(--tia-dc-del-word-bg);
  color: var(--tia-dc-del-word-fg);
  border-radius: 3px;
  padding: 0 2px;
  text-decoration: line-through;
}

/* ──────────────────────────────────────────────────────────
   SEO CONTENT BLOCK
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-seo-content {
  background: var(--tia-surface);
  border-radius: var(--tia-r-xl);
  box-shadow: 0 2px 20px rgba(0,0,0,.07), 0 1px 4px rgba(0,0,0,.04);
  padding: 32px 36px;
  margin-bottom: 20px;
  color: var(--tia-text-body);
  font-size: 15px;
  line-height: 1.7;
}

.tia-dc-wrap .tia-dc-seo-content h2 {
  font-family: var(--tia-font-h);
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 800;
  color: var(--tia-text);
  margin: 0 0 12px;
  padding: 0; border: none;
  letter-spacing: -.3px;
  line-height: 1.2;
}

.tia-dc-wrap .tia-dc-seo-content h3 {
  font-family: var(--tia-font-h);
  font-size: clamp(15px, 2vw, 17px);
  font-weight: 700;
  color: var(--tia-text);
  margin: 24px 0 8px;
  padding: 0; border: none;
  line-height: 1.3;
}

.tia-dc-wrap .tia-dc-seo-content h3:first-child { margin-top: 0; }

.tia-dc-wrap .tia-dc-seo-content p        { margin: 0 0 14px; color: var(--tia-text-body); }
.tia-dc-wrap .tia-dc-seo-content p:last-child { margin-bottom: 0; }

.tia-dc-wrap .tia-dc-seo-content ul,
.tia-dc-wrap .tia-dc-seo-content ol  { margin: 0 0 14px; padding-left: 0; list-style: none; }

.tia-dc-wrap .tia-dc-seo-content ul li,
.tia-dc-wrap .tia-dc-seo-content ol li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
  color: var(--tia-text-body);
  font-size: 14.5px;
}

.tia-dc-wrap .tia-dc-seo-content ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tia-blue-400);
}

.tia-dc-wrap .tia-dc-seo-content ol { counter-reset: tia-dc-ol; }
.tia-dc-wrap .tia-dc-seo-content ol li { counter-increment: tia-dc-ol; }
.tia-dc-wrap .tia-dc-seo-content ol li::before {
  content: counter(tia-dc-ol) '.';
  position: absolute; left: 0;
  color: var(--tia-blue-400);
  font-weight: 700; font-size: 13px;
}

.tia-dc-wrap .tia-dc-seo-content strong { color: var(--tia-text); font-weight: 600; }
.tia-dc-wrap .tia-dc-seo-content code {
  background: var(--tia-slate-100);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: var(--tia-font-m);
  font-size: 13px;
  color: var(--tia-text);
}

.tia-dc-wrap .tia-dc-seo-content a {
  color: var(--tia-blue-500);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color .15s;
}
.tia-dc-wrap .tia-dc-seo-content a:hover { color: var(--tia-blue-600); }

/* ──────────────────────────────────────────────────────────
   FAQ ACCORDION
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-faq-section { margin-bottom: 24px; }

.tia-dc-wrap .tia-dc-faq-heading {
  font-family: var(--tia-font-h);
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 800;
  color: var(--tia-text);
  margin: 0 0 14px;
  padding: 0; border: none;
  letter-spacing: -.3px;
}

.tia-dc-wrap .tia-dc-faq-list { display: flex; flex-direction: column; gap: 8px; }

.tia-dc-wrap .tia-dc-faq-item {
  background: var(--tia-surface);
  border-radius: var(--tia-r-lg);
  box-shadow: 0 2px 12px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.04);
  overflow: hidden;
  transition: box-shadow .2s;
}

.tia-dc-wrap .tia-dc-faq-item[open] {
  box-shadow: 0 4px 20px rgba(91,141,239,.12), 0 1px 4px rgba(0,0,0,.05);
}

.tia-dc-wrap .tia-dc-faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  font-family: var(--tia-font-h);
  font-size: 15px;
  font-weight: 700;
  color: var(--tia-text);
  cursor: pointer;
  list-style: none;
  -webkit-appearance: none;
  appearance: none;
  user-select: none;
  transition: background .15s, color .15s;
  line-height: 1.4;
}

.tia-dc-wrap .tia-dc-faq-q::-webkit-details-marker { display: none; }
.tia-dc-wrap .tia-dc-faq-q::marker               { display: none; }

.tia-dc-wrap .tia-dc-faq-q::after {
  content: '';
  flex-shrink: 0;
  width: 20px; height: 20px;
  background-color: var(--tia-blue-400);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 13px 13px;
  transition: transform .25s ease, background-color .15s;
}

.tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q::after {
  transform: rotate(180deg);
  background-color: var(--tia-blue-500);
}

.tia-dc-wrap .tia-dc-faq-q:hover {
  background: var(--tia-blue-50);
  color: var(--tia-blue-600);
}

.tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q {
  background: var(--tia-blue-50);
  color: var(--tia-blue-600);
}

.tia-dc-wrap .tia-dc-faq-q:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px rgba(91,141,239,.3);
}

.tia-dc-wrap .tia-dc-faq-a {
  padding: 14px 20px 18px;
  font-size: 14.5px;
  color: var(--tia-text-body);
  line-height: 1.65;
  border-top: 1px solid var(--tia-border);
  background: var(--tia-slate-50);
  animation: tia-dc-faq-open .2s ease forwards;
}

@keyframes tia-dc-faq-open {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tia-dc-wrap .tia-dc-faq-a p { margin: 0 0 10px; }
.tia-dc-wrap .tia-dc-faq-a p:last-child { margin-bottom: 0; }

/* ──────────────────────────────────────────────────────────
   RELATED TOOLS
────────────────────────────────────────────────────────── */
.tia-dc-wrap .tia-dc-related {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--tia-border);
}

.tia-dc-wrap .tia-dc-related-title {
  font-family: var(--tia-font-h);
  font-size: 12px;
  font-weight: 700;
  color: var(--tia-text-muted);
  text-transform: uppercase;
  letter-spacing: .7px;
  margin-bottom: 10px;
}

.tia-dc-wrap .tia-dc-related-list { display: flex; gap: 8px; flex-wrap: wrap; }

.tia-dc-wrap .tia-dc-related-tool {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--tia-r-full);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--tia-blue-500);
  background: var(--tia-blue-50);
  border: 1px solid var(--tia-blue-200);
  text-decoration: none;
  transition: background .15s, color .15s;
}

.tia-dc-wrap .tia-dc-related-tool:hover {
  background: var(--tia-blue-100);
  color: var(--tia-blue-600);
}

/* ──────────────────────────────────────────────────────────
   DARK MODE ELEMENT OVERRIDES
   (badge + FAQ — token-flip alone is insufficient)
────────────────────────────────────────────────────────── */

/* Badge: --tia-blue-600 not flipped → medium blue on dark navy fails WCAG AA */
.kt-dark-mode .tia-dc-wrap .tia-dc-badge,
html.wp-dark-mode-active .tia-dc-wrap .tia-dc-badge,
body.wp-dark-mode-active .tia-dc-wrap .tia-dc-badge,
html[data-theme="dark"] .tia-dc-wrap .tia-dc-badge,
.dark-mode .tia-dc-wrap .tia-dc-badge,
body[data-theme="dark"] .tia-dc-wrap .tia-dc-badge,
.is-dark .tia-dc-wrap .tia-dc-badge {
  background: rgba(91,141,239,.15);
  border-color: rgba(91,141,239,.30);
  color: #93BBFD;
}

/* FAQ hover/open: dark blue text on dark navy bg fails AA */
.kt-dark-mode .tia-dc-wrap .tia-dc-faq-q:hover,
html.wp-dark-mode-active .tia-dc-wrap .tia-dc-faq-q:hover,
body.wp-dark-mode-active .tia-dc-wrap .tia-dc-faq-q:hover,
html[data-theme="dark"] .tia-dc-wrap .tia-dc-faq-q:hover,
.dark-mode .tia-dc-wrap .tia-dc-faq-q:hover,
body[data-theme="dark"] .tia-dc-wrap .tia-dc-faq-q:hover,
.is-dark .tia-dc-wrap .tia-dc-faq-q:hover,
.kt-dark-mode .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q,
html.wp-dark-mode-active .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q,
body.wp-dark-mode-active .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q,
html[data-theme="dark"] .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q,
.dark-mode .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q,
body[data-theme="dark"] .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q,
.is-dark .tia-dc-wrap .tia-dc-faq-item[open] .tia-dc-faq-q { background: rgba(91,141,239,.20) !important; color: #93BBFD !important; }

/* ──────────────────────────────────────────────────────────
   RESPONSIVE
────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .tia-dc-wrap .tia-dc-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
  }
  .tia-dc-wrap .tia-dc-badge    { align-self: center; }
  .tia-dc-wrap .tia-dc-subtitle { text-align: center; }

  /* Stack input panels */
  .tia-dc-wrap .tia-dc-panels { grid-template-columns: 1fr; }
  .tia-dc-wrap .tia-dc-panels-divider { width: 100%; height: 1px; }
  .tia-dc-wrap .tia-dc-textarea { min-height: 160px; }

  /* Stack split diff panels */
  .tia-dc-wrap .tia-dc-split { grid-template-columns: 1fr; }
  .tia-dc-wrap .tia-dc-split-divider { width: 100%; height: 2px; }
}

@media (max-width: 640px) {
  .tia-dc-wrap .tia-dc-toolbar      { padding: 8px 10px; gap: 4px; }
  .tia-dc-wrap .tia-btn              { font-size: 12px; padding: 5px 10px; }
  .tia-dc-wrap .tia-dc-compare-bar  { flex-wrap: wrap; gap: 8px; }
  .tia-dc-wrap .tia-dc-faq-q        { padding: 14px 16px; font-size: 14px; }
  .tia-dc-wrap .tia-dc-faq-a        { padding: 12px 16px 16px; }
  .tia-dc-wrap .tia-dc-seo-content  { padding: 24px 20px; }
}

@media (max-width: 420px) {
  .tia-dc-wrap .tia-dc-btn-primary  { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .tia-dc-wrap *,
  .tia-dc-wrap *::before,
  .tia-dc-wrap *::after {
    animation-duration: 1ms !important;
    transition-duration: 1ms !important;
  }
}
