/* Pearto AI Humanizer.
 *
 * Namespaced under .humanizer-page and .hum-* so nothing here can leak into
 * another page, and every colour, radius, space and shadow comes from the
 * tokens already defined in app.css. No new palette is introduced.
 */

.humanizer-page {
  background: var(--surface-sunken);
}

.hum-shell {
  --hum-pane-radius: var(--radius-md);
  padding-bottom: var(--space-16);
}

.hum-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Intro ---------- */
.hum-intro {
  padding: var(--space-6) 0 var(--space-4);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.hum-intro h1 {
  margin: var(--space-2) 0 var(--space-2);
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  line-height: 1.2;
}

.hum-lede {
  max-width: var(--measure);
  margin: 0 0 var(--space-2);
  color: var(--text-muted);
  font-size: 1.02rem;
}

.hum-engine-note {
  margin: 0 0 var(--space-4);
  color: var(--text-subtle);
  font-size: 0.84rem;
}

.hum-intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------- Tabs (mobile-first, hidden on desktop) ---------- */
.hum-tabs {
  display: flex;
  gap: 2px;
  margin: var(--space-4) 0 0;
  padding: 3px;
  background: var(--surface-inset);
  border-radius: var(--radius-pill);
  overflow-x: auto;
}

.hum-tabs button {
  flex: 1 0 auto;
  padding: var(--space-2) var(--space-3);
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.84rem;
  cursor: pointer;
  white-space: nowrap;
}

.hum-tabs button[aria-selected="true"] {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

/* ---------- Grid ---------- */
.hum-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.hum-pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 420px;
  padding: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--hum-pane-radius);
}

.hum-pane:focus {
  outline: none;
}

.hum-pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.hum-pane-head h2 {
  margin: 0;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-subtle);
}

.hum-version-label {
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-muted);
}

.hum-pane-tools {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.hum-mini {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  white-space: nowrap;
}

.hum-mini:hover {
  background: var(--surface-sunken);
  color: var(--text);
}

.hum-mini.is-active {
  background: var(--brand-soft);
  border-color: var(--brand-200);
  color: var(--brand-ink);
  font-weight: 600;
}

.hum-file {
  display: inline-flex;
  align-items: center;
}

.hum-editor {
  flex: 1;
  width: 100%;
  min-height: 300px;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
  color: var(--text);
  font: inherit;
  font-size: 0.94rem;
  line-height: 1.65;
  resize: vertical;
}

.hum-editor:focus-visible,
.hum-mini:focus-visible,
.hum-tabs button:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 1px;
}

.hum-pane-foot {
  margin-top: var(--space-3);
}

.hum-counts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.hum-counts strong {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.hum-limit-note,
.hum-control-hint,
.hum-note,
.hum-placeholder {
  margin: var(--space-2) 0 0;
  color: var(--text-subtle);
  font-size: 0.8rem;
  line-height: 1.5;
}

.hum-limit-note.is-over {
  color: var(--critical);
  font-weight: 600;
}

.hum-empty-hint {
  margin: var(--space-2) 0 0;
  color: var(--text-subtle);
  font-size: 0.82rem;
}

/* ---------- Rewrite controls ---------- */
.hum-rewrite-controls {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.hum-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hum-field label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hum-field select,
.hum-field input,
.hum-drawer select,
.hum-drawer input,
.hum-drawer textarea,
#hum-voice-sample {
  padding: var(--space-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.86rem;
  width: 100%;
}

.hum-field select:focus-visible,
.hum-drawer select:focus-visible,
.hum-drawer input:focus-visible,
.hum-drawer textarea:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 1px;
}

/* ---------- Scores ---------- */
.hum-status {
  margin: 0 0 var(--space-2);
  min-height: 1.2em;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.hum-status.is-error {
  color: var(--critical);
  font-weight: 600;
}

.hum-status.is-busy {
  color: var(--brand-ink);
}

.hum-scores {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: var(--space-2);
}

.hum-score {
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
}

.hum-score-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.hum-score-value {
  display: block;
  font-size: 1.35rem;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.hum-score-band {
  display: inline-block;
  margin-top: 2px;
  font-size: 0.72rem;
  font-weight: 600;
}

.hum-score-good { border-left-color: var(--positive); }
.hum-score-caution { border-left-color: var(--caution); }
.hum-score-negative { border-left-color: var(--critical); }

.hum-score-good .hum-score-band { color: var(--positive); }
.hum-score-caution .hum-score-band { color: var(--caution); }
.hum-score-negative .hum-score-band { color: var(--critical); }

.hum-disclaimer {
  margin: var(--space-2) 0 0;
  padding: var(--space-2) var(--space-3);
  background: var(--info-bg);
  color: var(--info);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  line-height: 1.5;
}

.hum-mixed {
  margin: var(--space-3) 0 0;
  font-size: 0.8rem;
}

.hum-mixed-bar {
  display: flex;
  height: 10px;
  margin-top: 4px;
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: var(--surface-inset);
}

.hum-mixed-bar span {
  display: block;
  height: 100%;
}

.hum-mixed-human { background: var(--positive); }
.hum-mixed-ai { background: var(--critical); }
.hum-mixed-uncertain { background: var(--ink-300); }

/* ---------- Inspector ---------- */
.hum-inspector {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

.hum-inspector h3,
.hum-issues summary,
.hum-heatmap-wrap summary,
.hum-changesummary h3,
.hum-beforeafter h3,
.hum-integrity h3,
.hum-citations h3 {
  margin: 0 0 var(--space-2);
  font-size: 0.88rem;
}

.hum-inspector-text {
  margin: 0 0 var(--space-2);
  padding: var(--space-2);
  background: var(--surface-inset);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  line-height: 1.6;
}

.hum-inspector-meta,
.hum-integrity-list {
  display: grid;
  grid-template-columns: minmax(120px, auto) minmax(0, 1fr);
  gap: 2px var(--space-3);
  margin: 0 0 var(--space-2);
  font-size: 0.78rem;
}

.hum-inspector-meta dt,
.hum-integrity-list dt {
  color: var(--text-muted);
}

.hum-inspector-meta dd,
.hum-integrity-list dd {
  margin: 0;
}

.hum-inspector-issues ul {
  margin: var(--space-1) 0 var(--space-2);
  padding: 0;
  list-style: none;
}

.hum-inspector-issues li {
  padding: var(--space-2);
  margin-bottom: var(--space-1);
  background: var(--surface-sunken);
  border-left: 3px solid var(--caution);
  border-radius: var(--radius-xs);
  font-size: 0.8rem;
  line-height: 1.5;
}

.hum-inspector-issues li.is-high {
  border-left-color: var(--critical);
}

.hum-inspector-issues li.is-low {
  border-left-color: var(--ink-300);
}

.hum-inspector-actions {
  display: flex;
  gap: var(--space-2);
  align-items: flex-end;
  flex-wrap: wrap;
}

.hum-inspector-actions select {
  flex: 1 1 160px;
}

/* ---------- Issues and heatmap ---------- */
.hum-issues,
.hum-heatmap-wrap {
  margin-top: var(--space-3);
  font-size: 0.82rem;
}

.hum-issues summary,
.hum-heatmap-wrap summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 600;
}

.hum-issues ul {
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
}

.hum-issues li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.hum-issues button {
  border: 0;
  background: transparent;
  color: var(--brand);
  font: inherit;
  font-size: 0.76rem;
  cursor: pointer;
  text-decoration: underline;
}

.hum-heatmap {
  margin-top: var(--space-2);
  padding: var(--space-3);
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  line-height: 1.75;
}

.hum-heatmap mark {
  padding: 1px 2px;
  border-radius: var(--radius-xs);
  background: transparent;
  color: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

.hum-mark-natural { text-decoration-color: var(--positive); }
.hum-mark-generic,
.hum-mark-low_information { text-decoration-color: var(--caution); }
.hum-mark-wordy,
.hum-mark-long,
.hum-mark-unclear { text-decoration-color: var(--critical); }
.hum-mark-repetitive,
.hum-mark-semantic_repetition,
.hum-mark-repetitive_phrase { text-decoration-color: var(--info); }
.hum-mark-formulaic_opener,
.hum-mark-formulaic_conclusion,
.hum-mark-uniform { text-decoration-color: var(--ink-400); }
.hum-mark-needs_evidence,
.hum-mark-needs_citation { text-decoration-color: var(--accent); }

.hum-heatmap mark:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 1px;
}

.hum-heatmap-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* ---------- Changes ---------- */
.hum-changelist {
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: hum-change;
}

.hum-change {
  padding: var(--space-3);
  margin-bottom: var(--space-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--info);
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
  font-size: 0.84rem;
}

.hum-change.is-rejected {
  opacity: 0.6;
  border-left-color: var(--ink-400);
}

.hum-change.is-current {
  border-color: var(--brand);
  box-shadow: 0 0 0 2px var(--brand-soft);
}

.hum-change-head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.hum-change-type {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-subtle);
}

.hum-change-text {
  margin: 0 0 var(--space-1);
  line-height: 1.55;
}

.hum-change-text del {
  color: var(--critical);
  text-decoration: line-through;
  text-decoration-thickness: 2px;
}

.hum-change-text ins {
  color: var(--positive);
  background: var(--positive-bg);
  text-decoration: none;
  padding: 0 2px;
  border-radius: var(--radius-xs);
}

.hum-change-reason {
  margin: var(--space-1) 0 var(--space-2);
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.hum-change-actions {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.hum-change-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  font-size: 0.8rem;
}

/* ---------- Diff view ---------- */
.hum-diffview {
  flex: 1;
  min-height: 300px;
  padding: var(--space-3);
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
  font-size: 0.92rem;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
}

.hum-diffview .hum-diff-del {
  color: var(--critical);
  background: var(--critical-bg);
  text-decoration: line-through;
}

.hum-diffview .hum-diff-ins {
  color: var(--positive);
  background: var(--positive-bg);
}

.hum-inline-del {
  color: var(--critical);
  background: var(--critical-bg);
  text-decoration: line-through;
}

.hum-inline-ins {
  color: var(--positive);
  background: var(--positive-bg);
}

.hum-lock {
  padding: 0 3px;
  border-radius: var(--radius-xs);
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 0.86em;
  font-weight: 600;
}

/* ---------- Tables ---------- */
.hum-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.hum-table th,
.hum-table td {
  padding: var(--space-2);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.hum-table thead th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-subtle);
}

.hum-table td.hum-up { color: var(--positive); font-weight: 600; }
.hum-table td.hum-down { color: var(--critical); font-weight: 600; }
.hum-table td.hum-flat { color: var(--text-muted); }

/* ---------- Sources ---------- */
.hum-source {
  padding: var(--space-3);
  margin-bottom: var(--space-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--caution);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
}

.hum-source-meta {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--space-1);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.hum-source-quote {
  margin: var(--space-1) 0;
  padding-left: var(--space-2);
  border-left: 2px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
}

.hum-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-weight: 700;
  white-space: nowrap;
}

.hum-badge-on { background: var(--positive-bg); color: var(--positive); }
.hum-badge-off { background: var(--surface-inset); color: var(--text-muted); }
.hum-badge-warn { background: var(--caution-bg); color: var(--caution); }
.hum-badge-bad { background: var(--critical-bg); color: var(--critical); }

/* ---------- Drawer ---------- */
.hum-drawer {
  width: min(620px, calc(100vw - 24px));
  max-height: 88vh;
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--text);
  overflow-y: auto;
}

.hum-drawer::backdrop {
  background: rgba(11, 22, 26, 0.5);
}

.hum-drawer h2 {
  margin: 0 0 var(--space-3);
  font-size: 1.05rem;
}

.hum-drawer fieldset {
  margin: 0 0 var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.hum-drawer legend {
  padding: 0 var(--space-1);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-subtle);
}

.hum-drawer-actions {
  display: flex;
  justify-content: flex-end;
}

.hum-preserve {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-1);
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
}

.hum-preserve li {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  justify-content: space-between;
}

.hum-action-results {
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
  max-height: 180px;
  overflow-y: auto;
}

.hum-action-results button {
  display: block;
  width: 100%;
  padding: var(--space-2);
  border: 0;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.82rem;
  text-align: left;
  cursor: pointer;
}

.hum-action-results button:hover {
  background: var(--surface-sunken);
}

.hum-style-profile {
  margin-top: var(--space-2);
  font-size: 0.78rem;
}

/* ---------- Sticky mobile bar ---------- */
.hum-mobilebar {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.hum-mobilebar .button,
.hum-mobilebar .button-ghost {
  flex: 1;
}

/* ---------- Content below the tool ---------- */
.hum-content {
  padding: var(--space-8) 0 var(--space-4);
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.hum-trust {
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  background: var(--brand-soft);
  border-radius: var(--radius-md);
}

.hum-trust h2 {
  margin: 0 0 var(--space-2);
  font-size: 1.05rem;
}

.hum-trust-list {
  margin: 0;
  padding-left: var(--space-4);
  font-size: 0.88rem;
  line-height: 1.65;
}

.hum-trust-list li {
  margin-bottom: var(--space-1);
}

.hum-prose {
  max-width: var(--measure);
}

.hum-prose h2 {
  margin: var(--space-6) 0 var(--space-2);
  font-size: 1.12rem;
}

.hum-prose h2:first-child {
  margin-top: 0;
}

.hum-prose p {
  margin: 0 0 var(--space-3);
  line-height: 1.7;
  color: var(--text-muted);
}

.hum-faq details {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.hum-faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

.hum-faq p {
  margin: var(--space-2) 0 0;
}

/* ---------- Responsive ---------- */
@media (min-width: 1024px) {
  .hum-tabs {
    display: none;
  }

  .hum-mobilebar {
    display: none;
  }

  /* Original ~36%, revised ~40%, inspector ~24% per the layout brief. */
  .hum-grid {
    grid-template-columns: minmax(0, 36fr) minmax(0, 40fr) minmax(0, 24fr);
    align-items: start;
  }

  .hum-pane {
    min-height: 560px;
  }

  .hum-pane-changes,
  .hum-pane-sources {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) and (max-width: 1279px) {
  /* Two columns on smaller desktops; the inspector moves below. */
  .hum-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .hum-pane-inspector,
  .hum-pane-changes,
  .hum-pane-sources {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1023px) {
  /* One panel at a time on tablet and phone; state is preserved by the script. */
  .hum-pane {
    display: none;
    min-height: 0;
  }

  .hum-pane.is-active {
    display: flex;
  }

  .hum-grid {
    margin-top: var(--space-3);
  }

  .hum-editor,
  .hum-diffview {
    min-height: 260px;
  }
}

@media (max-width: 640px) {
  .hum-intro {
    padding: var(--space-4) 0 var(--space-3);
  }

  .hum-pane {
    padding: var(--space-3);
  }

  .hum-intro-actions .button,
  .hum-intro-actions .button-ghost {
    flex: 1 1 100%;
  }

  .hum-scores {
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  }

  .hum-rewrite-controls {
    gap: var(--space-2);
  }

  .hum-rewrite-controls .hum-field,
  .hum-rewrite-controls .button,
  .hum-rewrite-controls .hum-mini {
    flex: 1 1 100%;
  }

  .hum-mobilebar {
    position: sticky;
    bottom: 0;
    z-index: 20;
    padding: var(--space-2) 0;
    margin: var(--space-3) -12px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
  }
}

@media (prefers-reduced-motion: reduce) {
  .humanizer-page *,
  .humanizer-page *::before,
  .humanizer-page *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}

@media print {
  .hum-intro-actions,
  .hum-mobilebar,
  .hum-pane-tools,
  .hum-rewrite-controls,
  .hum-drawer {
    display: none !important;
  }

  .hum-pane {
    display: flex !important;
    min-height: 0;
    break-inside: avoid;
  }
}