:root {
  --bg: #0f1216;
  --panel: #171b21;
  --panel-2: #1e242c;
  --border: #2a323d;
  --text: #e6e9ee;
  --muted: #93a0b0;
  --accent: #4c8bf5;
  --accent-ink: #fff;
  --radius: 8px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
/* Light palette: applied for a system light preference (unless the user forced
   a theme via data-theme), and for an explicit data-theme="light" override. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #f5f7fa;
    --panel: #ffffff;
    --panel-2: #eef1f5;
    --border: #d6dce4;
    --text: #1a2029;
    --muted: #5b6672;
  }
}
:root[data-theme="light"] {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --panel-2: #eef1f5;
  --border: #d6dce4;
  --text: #1a2029;
  --muted: #5b6672;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
code { font-family: var(--mono); font-size: 0.9em; }

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { font-weight: 700; white-space: nowrap; }
.tabs { display: flex; gap: 4px; }
.tabs a {
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--muted);
}
.tabs a.active { background: var(--panel-2); color: var(--text); }
.topbar-sep { width: 1px; align-self: stretch; margin: 6px 0; background: var(--border); }
.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.file-name { color: var(--muted); font-size: 0.85rem; max-width: 220px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.metric-note { color: var(--muted); font-size: 0.8rem; }

.btn {
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn.icon-btn { padding: 6px 10px; font-size: 1rem; line-height: 1; }
.btn.ghost { background: transparent; }
.btn:hover { filter: brightness(1.08); }
select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  font: inherit;
}

/* ---------- landing ---------- */
.landing-main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.hero h1 { font-size: 2rem; margin: 0 0 12px; }
.lead { color: var(--muted); font-size: 1.05rem; }
.features { padding-left: 18px; color: var(--muted); }
.features li { margin: 6px 0; }
.uploader { position: sticky; top: 80px; }
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 6px;
  padding: 48px 24px;
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: var(--panel);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--panel-2);
}
.dropzone.compact { padding: 22px 20px; margin-bottom: 12px; }
.dropzone.filled { border-style: solid; border-color: var(--accent); }
.dz-icon { font-size: 2rem; }
.dropzone.compact .dz-icon { font-size: 1.4rem; }
.dz-title { font-weight: 600; }
.dz-title .req { color: #ff6b6b; font-weight: 400; font-size: 0.85rem; }
.dz-title .opt { color: var(--muted); font-weight: 400; font-size: 0.85rem; }
.dz-sub { color: var(--muted); font-size: 0.9rem; }
.open-btn { width: 100%; padding: 12px; margin-top: 4px; font-size: 1rem; }
.open-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.status { min-height: 1.4em; color: var(--muted); }
.status.error { color: #ff6b6b; }
.format-help { margin-top: 18px; color: var(--muted); }
.format-help pre {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
}

@media (max-width: 820px) {
  .landing-main { grid-template-columns: 1fr; }
}

/* ---------- monitors ---------- */
.monitors {
  display: flex;
  justify-content: center;
  padding: 12px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.monitors-row { display: flex; gap: 18px; justify-content: center; }

/* Header monitor controls (aspect ratio + caption text size). */
.export-controls { display: flex; align-items: center; gap: 10px; }
.monitor-controls { display: flex; align-items: center; gap: 12px; }
.monitor-controls label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.8rem;
}
.monitor-controls select { font-size: 0.82rem; }
.monitor { display: flex; flex-direction: column; gap: 6px; align-items: center; }
.monitor-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.screen {
  width: 340px;
  max-width: 42vw;
  aspect-ratio: 16 / 9;
  background: #000 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8'%3E%3Crect width='8' height='8' fill='%23111'/%3E%3C/svg%3E");
  border-radius: 6px;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
  border: 2px solid #000;
}
.caption {
  color: #fff;
  text-align: center;
  font-size: calc(clamp(0.7rem, 2.4vw, 1rem) * var(--caption-scale, 1));
  line-height: 1.25;
  padding: 0 6% 6%;
  text-shadow: 0 1px 2px #000, 0 0 4px #000;
  white-space: pre-wrap;
}

/* ---------- workbench (4 columns) ---------- */
/* Translate page fills the viewport: header + monitors fixed, workbench scrolls
   internally so the minimap can pin to the visible height. */
body.translate {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}
.workbench {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}
.grid-head {
  display: flex;
  background: var(--panel-2);
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
  z-index: 5;
}
.grid-head .head-cols {
  display: grid;
  grid-template-columns: 120px 1fr 1fr;
  gap: 1px;
  flex: 1;
}
.grid-head .head-cols > div,
.grid-head .col-map { padding: 8px 12px; }
.grid-head .col-map { width: 78px; box-sizing: border-box; }

.grid-body-wrap { display: flex; flex: 1; min-height: 0; }
.rows-scroll { flex: 1; overflow: auto; }

.row {
  display: grid;
  grid-template-columns: 120px 1fr 1fr;
  gap: 1px;
  border-bottom: 1px solid var(--border);
  align-items: stretch;
}
.cell { padding: 10px 12px; }
.cell.time {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  border-radius: 4px;
  transition: background-color 0.15s;
}
.cell.time .tc { color: var(--text); }
.cell.time .dur { margin-top: 4px; opacity: 0.8; }
.cell.ref { color: var(--muted); white-space: pre-wrap; }
.cell.tr { padding: 6px; }
.cell.tr textarea {
  width: 100%;
  min-height: 100%;
  resize: vertical;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  font: inherit;
}
.cell.tr textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
.row.warn .cell.time { font-weight: 600; }

/* ---------- minimap / overview ---------- */
/* Shared panel chrome; each page positions it (see body.translate / body.textview).
   Both compress the whole document to a canvas with a blue viewport box. */
.minimap {
  position: relative; /* containing block for the absolute .mm-viewport box */
  width: 78px;
  background: var(--panel);
  border-left: 1px solid var(--border);
  overflow: hidden;
}
.minimap canvas { display: block; width: 100%; height: 100%; }

/* Translate page: minimap is a flex sibling filling the workbench height. */
body.translate .minimap {
  flex: 0 0 78px;
  cursor: pointer;
}
body.translate .minimap.seeking { cursor: grabbing; }
.mm-viewport {
  position: absolute;
  left: 0;
  right: 0;
  background: rgba(76, 139, 245, 0.18);
  border: 1px solid var(--accent);
  border-radius: 2px;
  pointer-events: none;
}

/* ---------- text view ---------- */
.hint {
  max-width: 1100px;
  margin: 14px auto 0;
  padding: 0 24px;
  color: var(--muted);
}
/* Text view fills the viewport; paragraphs scroll in an inner container so the
   minimap can pin to the visible height (same pattern as the Translate page). */
body.textview {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}
body.textview .hint { flex: 0 0 auto; margin: 14px auto 6px; }
.textview-wrap {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto 10px;
  padding: 0 12px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.textview-head { flex: 0 0 auto; }
.textview-head .head-cols { grid-template-columns: 1fr 1fr; }
.textview-body { display: flex; flex: 1; min-height: 0; }
.tv-scroll { flex: 1; overflow: auto; }
.para-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}
.para { margin: 0; }
.para.ref { color: var(--muted); }
.frag {
  border-radius: 3px;
  padding: 1px 2px;
  cursor: pointer;
  transition: outline 0.1s;
}
.frag:hover { outline: 1px solid var(--accent); }
.frag.empty { color: var(--muted); font-style: italic; }
/* Colours-off review mode: neutralise the inline fragment colours (the minimap
   is unaffected). !important is needed to override the inline background. */
.paragraphs.colors-off .frag { background-color: transparent !important; }

/* Text view minimap: a flex sibling filling the scroll area height, driven by
   the inner #tv-scroll container — identical behaviour to the Translate page. */
body.textview .minimap {
  flex: 0 0 78px;
  cursor: pointer;
}
body.textview .minimap.seeking { cursor: grabbing; }

/* ---------- projects / config / panels ---------- */
.landing-main.single { grid-template-columns: 1fr; max-width: 900px; }
.muted { color: var(--muted); }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin-bottom: 20px;
}
.panel h2 { margin: 0 0 6px; font-size: 1.15rem; }
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.inline-form { display: flex; gap: 8px; }
.inline-form input {
  min-width: 260px;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
}

.project-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.project-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-2);
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.project-card:hover { border-color: var(--accent); background: var(--panel); }
.project-title { font-weight: 600; font-size: 1.05rem; }
.project-meta { font-size: 0.8rem; color: var(--muted); margin: 2px 0 6px; }
.project-actions { display: flex; gap: 8px; flex-shrink: 0; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.chip {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
}
.chip.warnchip { color: #ff9b6b; border-color: #6b3f2f; }
.btn.danger { color: #ff8080; }
.btn.disabled { opacity: 0.5; pointer-events: none; }

.quick-form { margin-top: 14px; }
#quick-details summary { cursor: pointer; }

/* config form */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field > label { font-size: 0.82rem; color: var(--muted); }
.field input, .field select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
}
.field-row { display: flex; gap: 18px; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 160px; }
.source-list { list-style: none; margin: 8px 0 16px; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.source-list li { padding: 4px 0; }
.save-bar { display: flex; align-items: center; gap: 14px; }

/* translate header project controls */
.project-controls { display: flex; align-items: center; gap: 12px; }
.project-controls label { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 0.82rem; }
.project-controls select { font-size: 0.82rem; }
.save-status { font-size: 0.8rem; color: var(--muted); min-width: 60px; }
.brand a { color: inherit; }

/* config: add-file row aligns the button with the inputs */
.add-file-row { align-items: flex-end; }
.add-file-action { flex: 0 0 auto; }
.source-list li { display: flex; align-items: center; gap: 8px; }
.source-list code { margin-left: auto; color: var(--muted); }