/* =========================================================================
   Writer Engine — design system (Spec §33)
   Dark, clean, restrained. A serious professional writing tool: no
   frameworks, no CDN assets, single desaturated accent, informative —
   never noisy — status treatment.
   ========================================================================= */

/* ---- Tokens ------------------------------------------------------------ */

:root {
  /* Surfaces */
  --bg: #101014;
  --bg-raised: #16161c;
  --panel: #1a1a21;
  --panel-edge: #26262f;
  --line: #2c2c36;

  /* Ink */
  --ink: #e6e4dd;
  --ink-dim: #9b998f;
  --ink-faint: #6b6a63;

  /* Single desaturated accent */
  --accent: #7d9b8f;
  --accent-ink: #0f1412;
  --accent-dim: #566b62;

  /* Semantics — muted, informative */
  --danger: #b06a5f;
  --danger-ink: #f2ded9;
  --ok: #7a9a6d;
  --warn: #b09a5f;

  /* Type */
  --font-ui: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Courier Prime", "Courier New", Courier, monospace;

  /* Rhythm */
  --radius: 6px;
  --radius-sm: 4px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2.25rem;

  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.25);
  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent-dim);

  color-scheme: dark;
}

/* Optional local Courier Prime — used only if the files are deployed. */
@font-face {
  font-family: "Courier Prime";
  src: url("/fonts/CourierPrime-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Courier Prime";
  src: url("/fonts/CourierPrime-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---- Base -------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.55;
}

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 var(--space-3);
  letter-spacing: 0.01em;
}

h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-dim); }

p {
  margin: 0 0 var(--space-3);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: var(--space-5) 0;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--accent-dim);
  color: var(--ink);
}

.muted { color: var(--ink-dim); }
.faint { color: var(--ink-faint); }
.mono { font-family: var(--font-mono); }

/* ---- Layout ------------------------------------------------------------ */

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.page {
  padding: var(--space-6) 0;
}

.page-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.page-head h1 {
  margin: 0;
}

/* Two-column workbench (Write-as-Writer, later phases). */
.workbench {
  display: grid;
  grid-template-columns: minmax(320px, 5fr) minmax(380px, 7fr);
  gap: var(--space-5);
  align-items: start;
}

.workbench__pane {
  min-width: 0;
}

@media (max-width: 960px) {
  .workbench {
    grid-template-columns: 1fr;
  }
}

/* ---- Navigation -------------------------------------------------------- */

.nav {
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  min-height: 52px;
}

.nav__brand {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.nav__brand:hover {
  text-decoration: none;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.nav__link {
  color: var(--ink-dim);
  font-size: 0.9rem;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}

.nav__link:hover {
  color: var(--ink);
  text-decoration: none;
}

.nav__link.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---- Buttons ----------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--panel-edge);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.btn:hover {
  text-decoration: none;
  background: #30303b;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: #8fa99e;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-dim);
}

.btn--ghost:hover {
  background: var(--panel);
  color: var(--ink);
}

.btn--danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}

.btn--danger:hover {
  background: var(--danger);
  color: var(--danger-ink);
}

.btn--block {
  width: 100%;
}

/* ---- Cards & panels ---------------------------------------------------- */

.card {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: var(--space-5);
}

.card--flush {
  padding: 0;
}

.card__title {
  margin-bottom: var(--space-2);
  font-size: 1rem;
}

.card__meta {
  color: var(--ink-faint);
  font-size: 0.8rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

/* Trait cards (Writer Model page, later phases): operational knowledge
   first — rule text dominates, metadata stays quiet. */
.trait-card {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-left: 3px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: var(--space-4);
}

.trait-card__name {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.trait-card__category {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: var(--space-2);
}

.trait-card__rule {
  color: var(--ink);
  margin-bottom: var(--space-2);
}

.trait-card__evidence {
  font-size: 0.82rem;
  color: var(--ink-dim);
}

.trait-card--provisional {
  border-left-color: var(--warn);
}

/* ---- Forms ------------------------------------------------------------- */

.field {
  margin-bottom: var(--space-4);
}

.field__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-1);
}

.field__hint {
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin-top: var(--space-1);
}

.field__error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: var(--space-1);
}

.input,
.select,
.textarea {
  width: 100%;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.4;
  transition: border-color 120ms ease;
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: none;
}

.input[aria-invalid="true"],
.textarea[aria-invalid="true"] {
  border-color: var(--danger);
}

.textarea {
  min-height: 8.5rem;
  resize: vertical;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9rem;
  color: var(--ink-dim);
  cursor: pointer;
}

.checkbox input {
  accent-color: var(--accent);
  width: 1rem;
  height: 1rem;
}

.form-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ---- Tables ------------------------------------------------------------ */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th {
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--line);
}

.table td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--panel-edge);
  vertical-align: top;
}

.table tr:last-child td {
  border-bottom: 0;
}

.table--in-card th:first-child,
.table--in-card td:first-child {
  padding-left: var(--space-5);
}

.table--in-card th:last-child,
.table--in-card td:last-child {
  padding-right: var(--space-5);
}

/* ---- Status pills (Spec §23 stages — informative, not noisy) ----------- */

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.14rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-dim);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.status-pill::before {
  content: "";
  width: 0.45em;
  height: 0.45em;
  border-radius: 50%;
  background: var(--ink-faint);
}

/* In-progress pipeline stages share one quiet working treatment. */
.status-pill--uploaded::before { background: var(--ink-dim); }

.status-pill--working,
.status-pill--extracting_pdf,
.status-pill--running_ocr,
.status-pill--parsing_screenplay,
.status-pill--detecting_entities,
.status-pill--analyzing_script,
.status-pill--building_embeddings,
.status-pill--updating_writer_model {
  color: var(--ink);
  border-color: var(--accent-dim);
}

.status-pill--working::before,
.status-pill--extracting_pdf::before,
.status-pill--running_ocr::before,
.status-pill--parsing_screenplay::before,
.status-pill--detecting_entities::before,
.status-pill--analyzing_script::before,
.status-pill--building_embeddings::before,
.status-pill--updating_writer_model::before {
  background: var(--accent);
}

.status-pill--ready {
  color: var(--ok);
  border-color: var(--ok);
}
.status-pill--ready::before { background: var(--ok); }

.status-pill--failed {
  color: var(--danger);
  border-color: var(--danger);
}
.status-pill--failed::before { background: var(--danger); }

.status-pill--provisional {
  color: var(--warn);
  border-color: var(--warn);
}
.status-pill--provisional::before { background: var(--warn); }

/* ---- Progress bar ------------------------------------------------------ */

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar__fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 999px;
  transition: width 400ms ease;
}

.progress-bar--failed .progress-bar__fill {
  background: var(--danger);
}

/* ---- Flash messages ---------------------------------------------------- */

.flash {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--panel);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  font-size: 0.9rem;
}

.flash--error {
  border-left-color: var(--danger);
  color: var(--danger-ink);
}

.flash ul {
  margin: 0;
  padding-left: 1.1rem;
}

/* ---- Empty states ------------------------------------------------------ */

.empty {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: center;
  color: var(--ink-dim);
}

.empty__title {
  color: var(--ink);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

/* ---- Auth -------------------------------------------------------------- */

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-5);
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: var(--shadow);
}

.auth-card__brand {
  text-align: center;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: var(--space-2);
}

.auth-card__sub {
  text-align: center;
  color: var(--ink-faint);
  font-size: 0.8rem;
  margin-bottom: var(--space-5);
}

/* ---- Screenplay text (Spec §33: readable screenplay formatting) -------- */

.screenplay {
  font-family: var(--font-mono);
  font-size: 12pt;
  line-height: 1;
  color: var(--ink);
  background: var(--bg-raised);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: 3rem 2.5rem;
  max-width: 8.5in;
  white-space: pre-wrap;
  overflow-x: auto;
}

.screenplay p,
.screenplay div {
  margin: 0 0 1em;
}

/* Standard US screenplay geometry, expressed relative to the page body. */
.screenplay .sp-scene-heading {
  text-transform: uppercase;
  font-weight: 700;
  margin: 2em 0 1em;
}

.screenplay .sp-action {
  max-width: 6in;
}

.screenplay .sp-character {
  text-transform: uppercase;
  margin: 1em 0 0 2.2in;
  max-width: 3in;
}

.screenplay .sp-parenthetical {
  margin: 0 0 0 1.8in;
  max-width: 2in;
}

.screenplay .sp-dialogue {
  margin: 0 0 1em 1.5in;
  max-width: 3.3in;
}

.screenplay .sp-transition {
  text-align: right;
  text-transform: uppercase;
  margin: 1em 0;
}

/* =========================================================================
   Phase 2 — Writer page & source library components
   (extends the design system above; same tokens, same restraint)
   ========================================================================= */

/* ---- Section tabs (writer page, Spec §2) ------------------------------- */

.tabs {
  display: flex;
  gap: var(--space-4);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--space-5);
  overflow-x: auto;
}

.tabs__link {
  color: var(--ink-dim);
  font-size: 0.9rem;
  font-weight: 600;
  padding: var(--space-2) var(--space-1);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.tabs__link:hover {
  color: var(--ink);
  text-decoration: none;
}

.tabs__link.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---- Page-head action cluster ------------------------------------------ */

.page-head__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ---- Drag-drop upload zone (progressive enhancement) ------------------- */

.drop-zone {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  padding: var(--space-4);
  transition: border-color 120ms ease, background-color 120ms ease;
}

.drop-zone.is-dragover {
  border-color: var(--accent);
  background: var(--bg-raised);
}

.drop-zone__input {
  width: 100%;
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.drop-zone.is-enhanced .drop-zone__input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.drop-zone.is-enhanced {
  position: relative;
  text-align: center;
  padding: var(--space-5);
  cursor: pointer;
}

.drop-zone__prompt {
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.drop-zone__browse {
  background: none;
  border: 0;
  padding: 0;
  color: var(--accent);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.drop-zone__browse:hover {
  text-decoration: underline;
}

.drop-zone__list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  text-align: left;
  font-size: 0.85rem;
  color: var(--ink);
}

.drop-zone__list li {
  padding: var(--space-1) 0;
  border-bottom: 1px solid var(--panel-edge);
  font-family: var(--font-mono);
}

.drop-zone__list li:last-child {
  border-bottom: 0;
}

.drop-zone__size {
  color: var(--ink-faint);
  margin-left: var(--space-2);
}

/* ---- Library table details ---------------------------------------------- */

.row-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.btn--sm {
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
}

.weight-badge {
  display: inline-block;
  padding: 0.14rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  white-space: nowrap;
}

.weight-badge--excluded {
  border-color: var(--line);
  color: var(--ink-faint);
}

.library-detail > td {
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
  padding: var(--space-5);
}

.library-detail__inner {
  display: grid;
  grid-template-columns: minmax(240px, 2fr) minmax(320px, 3fr);
  gap: var(--space-5);
  align-items: start;
}

@media (max-width: 900px) {
  .library-detail__inner {
    grid-template-columns: 1fr;
  }
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 var(--space-4);
}

.detail-grid--thirds {
  grid-template-columns: 1fr 1fr 1fr;
}

@media (max-width: 720px) {
  .detail-grid,
  .detail-grid--thirds {
    grid-template-columns: 1fr;
  }
}

/* ---- Range sliders (confidence / weight, 0–1) --------------------------- */

.range {
  width: 100%;
  accent-color: var(--accent);
}

.range-value {
  float: right;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--accent);
}

/* ---- Write-as-Writer workbench (Phase 9, Spec §3; Addenda B/C.4) -------- */

.write-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: end;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.write-toolbar__project {
  display: flex;
  gap: var(--space-2);
  align-items: end;
}

.write-toolbar__new {
  display: flex;
  gap: var(--space-2);
  align-items: end;
}

.input-area {
  margin-bottom: var(--space-4);
}

.input-area__title {
  margin: 0 0 var(--space-1);
  color: var(--accent);
  font-size: 1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.input-area__hint {
  margin: 0 0 var(--space-3);
  font-size: 0.85rem;
}

.brief {
  margin-top: var(--space-3);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: var(--space-2) var(--space-3);
}

.brief__summary {
  cursor: pointer;
  color: var(--ink-dim);
  font-weight: 600;
}

.brief[open] > .brief__summary {
  margin-bottom: var(--space-3);
}

.brief__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-2) var(--space-3);
}

.brief-character {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-1);
  margin-bottom: var(--space-1);
}

@media (max-width: 900px) {
  .brief-character {
    grid-template-columns: 1fr 1fr;
  }
}

.control-flags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-3);
}

.mode-select {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.stage-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
}

.stage-list__item {
  font-size: 0.8rem;
  color: var(--ink-faint);
  padding: 2px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.stage-list__item.is-done {
  color: var(--ink-dim);
  border-color: var(--ink-faint);
}

.stage-list__item.is-current {
  color: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

.screenplay-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.55;
  white-space: pre-wrap;
  background: var(--bg-deep, rgba(0, 0, 0, 0.25));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: var(--space-4);
  max-height: 70vh;
  overflow: auto;
}

.gate {
  border-color: var(--accent);
}

.gate__question {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--line);
}

.gate__options {
  list-style: none;
  margin: var(--space-1) 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.canon-history {
  margin: var(--space-1) 0 0;
  padding-left: var(--space-4);
}

/* =========================================================================
   Phase 12 — Generation History, editing, compare & exports
   (same tokens, same restraint)
   ========================================================================= */

/* ---- History list (writers page, Spec §2) ------------------------------ */

.history-excerpt {
  max-width: 18ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- Request record page ------------------------------------------------ */

.detail-columns {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: var(--space-4);
  align-items: start;
}

@media (max-width: 1100px) {
  .detail-columns {
    grid-template-columns: minmax(0, 1fr);
  }
}

.record-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  white-space: pre-wrap;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3);
  max-height: 16rem;
  overflow: auto;
}

.checksum {
  word-break: break-all;
  font-size: 0.78rem;
}

/* ---- Version timeline & origin badges ---------------------------------- */

.version-entry {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-3);
  background: var(--bg-raised);
}

.version-entry[open] {
  border-color: var(--panel-edge);
}

.version-entry__summary {
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) 0;
}

.origin-badge {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-dim);
}

.origin-badge--generated { border-color: var(--accent-dim); color: var(--accent); }
.origin-badge--regenerated { border-color: var(--accent-dim); color: var(--accent-dim); }
.origin-badge--revised { border-color: var(--warn); color: var(--warn); }
.origin-badge--user { border-color: var(--ink-dim); color: var(--ink); }

/* ---- Edit pane (Spec §3: never destroys the original) ------------------- */

.screenplay-edit {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.55;
  min-height: 24rem;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.3);
  tab-size: 4;
}

.version-edit {
  margin-top: var(--space-3);
}

/* ---- Operational Scene Plan (D-11) -------------------------------------- */

.op-plan {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: var(--space-3);
}

.op-plan__item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3);
  background: var(--bg-raised);
}

.op-plan__label {
  color: var(--ink-dim);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.op-plan__list {
  margin: 0;
  padding-left: var(--space-4);
}

.op-plan__list li {
  margin-bottom: var(--space-1);
}

/* ---- Retrieval Audit table (C.6) ----------------------------------------- */

.audit-table {
  font-size: 0.82rem;
}

.audit-table td {
  vertical-align: top;
}

.row-actions .btn.is-active {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---- Compare Versions: jfcherng/php-diff dark theme ---------------------- */

.compare-pickers {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

@media (max-width: 900px) {
  .compare-pickers {
    grid-template-columns: minmax(0, 1fr);
  }
}

.diff-pane {
  overflow-x: auto;
}

.diff-pane .diff-wrapper.diff {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  background: var(--bg-raised);
  border: 1px solid var(--panel-edge);
}

.diff-pane .diff-wrapper.diff th {
  background: var(--panel);
  color: var(--ink-dim);
  font-weight: 400;
  border: 1px solid var(--line);
  padding: 0 var(--space-2);
  text-align: right;
  min-width: 2.5rem;
  user-select: none;
}

.diff-pane .diff-wrapper.diff td {
  border: 1px solid var(--line);
  padding: 0 var(--space-2);
  white-space: pre-wrap;
  word-break: break-word;
  vertical-align: top;
}

.diff-pane .diff-wrapper.diff thead th {
  text-align: left;
  padding: var(--space-1) var(--space-2);
}

/* Equal lines stay quiet; changes carry muted semantic tints. */
.diff-pane .diff-wrapper.diff tbody.change-ins td.new,
.diff-pane .diff-wrapper.diff tbody.change-rep td.new {
  background: rgba(122, 154, 109, 0.14);
}

.diff-pane .diff-wrapper.diff tbody.change-del td.old,
.diff-pane .diff-wrapper.diff tbody.change-rep td.old {
  background: rgba(176, 106, 95, 0.14);
}

.diff-pane .diff-wrapper.diff tbody.change ins {
  background: rgba(122, 154, 109, 0.35);
  color: var(--ink);
  text-decoration: none;
  border-radius: 2px;
}

.diff-pane .diff-wrapper.diff tbody.change del {
  background: rgba(176, 106, 95, 0.35);
  color: var(--ink);
  text-decoration: none;
  border-radius: 2px;
}

.diff-pane .diff-wrapper.diff tbody.change th.sign {
  text-align: center;
}

.diff-pane .diff-wrapper.diff tbody.change th.sign.ins { color: var(--ok); }
.diff-pane .diff-wrapper.diff tbody.change th.sign.del { color: var(--danger); }

.diff-pane .diff-wrapper.diff td.old {
  border-right-color: var(--panel-edge);
}