:root {
  color-scheme: dark;
  --cx-bg: #0b1016;
  --cx-panel: #151d26;
  --cx-panel-2: #1b2530;
  --cx-ink: #eef3f6;
  --cx-muted: #8f9ca9;
  --cx-line: #2a3540;
  --cx-line-strong: #3d4a57;
  --cx-accent: #6db3e8;
  --cx-accent-strong: #3f8fc7;
  --cx-accent-soft: #152a3a;
  --cx-brand: #9aa8ff;
  --cx-good: #55c58a;
  --cx-good-soft: #10291f;
  --cx-bad: #f0787e;
  --cx-bad-soft: #34191d;
  --cx-film: #05080b;
  --cx-radius: 6px;
  --cx-font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --cx-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --paper: var(--cx-bg);
  --panel: var(--cx-panel);
  --panel-2: var(--cx-panel-2);
  --line: var(--cx-line);
  --ink: var(--cx-ink);
  --muted: var(--cx-muted);
  --accent: var(--cx-accent);
  --flame: #f08a4b;
  --gold: #e2b653;
  --coral: #ee6d75;
}

:root[data-theme="light"] {
  color-scheme: light;
  --cx-bg: #eeece7;
  --cx-panel: #ffffff;
  --cx-panel-2: #f3f1ec;
  --cx-ink: #1d252d;
  --cx-muted: #68747e;
  --cx-line: #d5d2ca;
  --cx-line-strong: #b9b7b0;
  --cx-accent: #286f9f;
  --cx-accent-strong: #1d5c86;
  --cx-accent-soft: #e7f1f7;
  --cx-brand: #4f5bd5;
  --cx-good: #247a50;
  --cx-good-soft: #e8f4ed;
  --cx-bad: #b94650;
  --cx-bad-soft: #f8e8e9;
  --coral: #b94650;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--cx-bg); }
body {
  min-height: 100vh;
  margin: 0;
  border-top: 3px solid var(--cx-brand);
  background: var(--cx-bg);
  color: var(--cx-ink);
  font-family: var(--cx-font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
button:disabled { cursor: default; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 2px solid var(--cx-accent);
  outline-offset: 3px;
}
a { color: var(--cx-accent); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.025em; }
.cx-hidden { display: none !important; }

/* Header */
.bar .nav-tab.active { color: var(--cx-ink); background: var(--cx-panel-2); }
.tool-header-context { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.tool-header-context > strong { color: var(--cx-muted); font-size: .75rem; }
.cx-preview-badge {
  padding: 2px 7px;
  border: 1px solid var(--cx-line-strong);
  border-radius: 3px;
  color: var(--cx-muted);
  font-family: var(--cx-mono);
  font-size: .59rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.cx-account { display: flex; align-items: center; gap: 8px; }
.cx-account-label { color: var(--cx-muted); font-size: .72rem; }

/* Controls */
.cx-button, .cx-icon-button {
  min-height: 43px;
  border: 1px solid var(--cx-line-strong);
  border-radius: var(--cx-radius);
  background: var(--cx-panel);
  color: var(--cx-ink);
  font-weight: 750;
  transition: border-color .12s ease, background-color .12s ease;
}
.cx-button { padding: 9px 15px; }
.cx-button:hover:not(:disabled), .cx-icon-button:hover:not(:disabled) { border-color: var(--cx-accent); }
.cx-button:disabled, .cx-icon-button:disabled { opacity: .45; }
.cx-button-primary { border-color: var(--cx-accent-strong); background: var(--cx-accent); color: #0b1720; }
:root[data-theme="light"] .cx-button-primary { color: #fff; }
.cx-button-secondary { background: var(--cx-panel-2); }
.cx-button-quiet { background: transparent; }
.cx-button.is-selected, .cx-button[aria-pressed="true"] { border-color: var(--cx-accent); background: var(--cx-accent-soft); }
.cx-compact { min-height: 34px; padding: 5px 11px; font-size: .82rem; }
.cx-icon-button { width: 34px; min-height: 34px; padding: 0; font-size: 1.1rem; }
.cx-text-button {
  padding: 4px 0;
  border: 0;
  background: none;
  color: var(--cx-accent);
  font-size: .84rem;
  font-weight: 700;
}
.cx-select, .cx-input {
  width: 100%;
  min-height: 43px;
  padding: 8px 11px;
  border: 1px solid var(--cx-line-strong);
  border-radius: var(--cx-radius);
  background: var(--cx-panel-2);
  color: var(--cx-ink);
}
.cx-kicker, .cx-overline {
  margin-bottom: 6px;
  color: var(--cx-muted);
  font-family: var(--cx-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.cx-kicker { color: var(--cx-brand); }

/* Layout */
.cx-shell { width: min(1240px, 100%); margin: 0 auto; padding: 28px 16px 40px; }
.cx-home-head h1 { margin-bottom: 22px; font-size: clamp(1.9rem, 4vw, 2.7rem); }
.cx-home-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.cx-panel { padding: 22px; border: 1px solid var(--cx-line); border-radius: 10px; background: var(--cx-panel); }
.cx-section-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.cx-section-heading h2 { margin: 0; font-size: 1.25rem; }
.cx-case-count { color: var(--cx-muted); font-size: .8rem; white-space: nowrap; }
.cx-mode-list { display: grid; gap: 8px; margin-bottom: 18px; }
.cx-mode-row {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--cx-line);
  border-radius: 8px;
  cursor: pointer;
}
.cx-mode-row.is-selected { border-color: var(--cx-accent); background: var(--cx-accent-soft); }
.cx-mode-row input { accent-color: var(--cx-accent); }
.cx-mode-number { color: var(--cx-muted); font-family: var(--cx-mono); font-size: .75rem; }
.cx-mode-copy strong { display: block; }
.cx-mode-copy small { color: var(--cx-muted); }
.cx-launch-actions { display: grid; grid-template-columns: 1fr 140px auto; gap: 10px; align-items: end; }
.cx-launch-actions #resumeBtn { grid-column: 1 / -1; }
.cx-filter-label { display: grid; gap: 5px; color: var(--cx-muted); font-size: .78rem; font-weight: 700; }
.cx-stat-line { display: flex; justify-content: space-between; padding: 11px 0; border-top: 1px solid var(--cx-line); }
.cx-stat-line span { color: var(--cx-muted); }

/* Session */
.cx-session-head { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; margin-bottom: 10px; }
.cx-session-progress { display: flex; gap: 10px; align-items: baseline; }
.cx-session-progress span { color: var(--cx-muted); font-size: .82rem; }
.cx-session-score { justify-self: end; display: flex; gap: 8px; align-items: baseline; }
.cx-session-score span { color: var(--cx-muted); font-size: .82rem; }
.cx-progress-track { height: 3px; margin-bottom: 16px; border-radius: 3px; background: var(--cx-line); overflow: hidden; }
.cx-progress-track i { display: block; height: 100%; background: var(--cx-brand); transition: width .2s ease; }
.cx-workspace { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); gap: 16px; align-items: start; }
.cx-film-panel { min-width: 0; padding: 10px; border: 1px solid var(--cx-line); border-radius: 10px; background: var(--cx-panel); }
.cx-film-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 10px; }
.cx-tool-group { display: flex; align-items: center; gap: 6px; }
.cx-zoom-label { min-width: 46px; color: var(--cx-muted); font-family: var(--cx-mono); font-size: .76rem; text-align: center; }
.cx-slider { display: flex; align-items: center; gap: 6px; color: var(--cx-muted); font-size: .74rem; font-weight: 700; }
.cx-slider input { width: 82px; accent-color: var(--cx-accent); }
.cx-film-viewport {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: min(70vh, 720px);
  border-radius: 6px;
  background: var(--cx-film);
  overflow: hidden;
  touch-action: none;
  user-select: none;
}
.cx-film-viewport.is-zoomed { cursor: grab; }
.cx-film-viewport.is-localizing { cursor: crosshair; }
.cx-film-stage { position: relative; flex: none; transform-origin: center center; }
.cx-film-stage img { display: block; width: 100%; height: 100%; pointer-events: none; }
.cx-annotations { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.cx-annotation { --tone: #facc15; color: var(--tone); }
.cx-tone-1 { --tone: #38bdf8; }
.cx-tone-2 { --tone: #fb7185; }
.cx-tone-3 { --tone: #4ade80; }
.cx-tone-0 { --tone: #facc15; }
.cx-annotation line, .cx-annotation rect, .cx-annotation ellipse, .cx-annotation polygon {
  fill: color-mix(in srgb, var(--tone) 9%, transparent);
  stroke: var(--tone);
  stroke-width: 5px;
  vector-effect: non-scaling-stroke;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 2px rgba(0, 0, 0, .9));
}
.cx-annotation line { fill: none; }
.cx-annotation polygon.cx-arrowhead { fill: var(--tone); stroke-width: 1.5px; }
.cx-badge circle { fill: var(--tone); stroke: #0f172a; stroke-width: 3px; }
.cx-badge text { fill: #0f172a; font-size: 30px; font-weight: 900; font-family: var(--cx-font); }
.cx-tap-marker {
  position: absolute;
  width: 26px;
  height: 26px;
  margin: -13px 0 0 -13px;
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 2px #e11d48, 0 0 10px rgba(0, 0, 0, .8);
  pointer-events: none;
}
.cx-tap-marker::after { content: ""; position: absolute; inset: 8px; border-radius: 50%; background: #e11d48; }
.cx-film-note { margin: 8px 2px 0; color: var(--cx-muted); font-size: .76rem; }

.cx-answer-panel { padding: 20px; border: 1px solid var(--cx-line); border-radius: 10px; background: var(--cx-panel); }
.cx-stem { margin-bottom: 12px; color: var(--cx-ink); }
.cx-question-prompt h2 { margin-bottom: 16px; font-size: 1.2rem; }
.cx-choices { display: grid; gap: 8px; }
.cx-choice-heading { margin: 8px 0 0; }
.cx-choice {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 48px;
  padding: 9px 12px;
  border: 1px solid var(--cx-line-strong);
  border-radius: var(--cx-radius);
  background: var(--cx-panel-2);
  color: var(--cx-ink);
  text-align: left;
}
.cx-choice:hover:not(:disabled) { border-color: var(--cx-accent); }
.cx-choice.is-selected { border-color: var(--cx-accent); background: var(--cx-accent-soft); }
.cx-choice.is-correct { border-color: var(--cx-good); background: var(--cx-good-soft); }
.cx-choice.is-wrong { border-color: var(--cx-bad); background: var(--cx-bad-soft); }
.cx-choice-key { color: var(--cx-muted); font-family: var(--cx-mono); font-size: .78rem; font-weight: 700; }
.cx-checklist { display: grid; gap: 6px; margin-bottom: 8px; }
.cx-check-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.cx-check-label { font-size: .88rem; }
.cx-segmented { display: inline-flex; flex: none; border: 1px solid var(--cx-line-strong); border-radius: var(--cx-radius); overflow: hidden; }
.cx-segmented button { min-height: 34px; padding: 4px 10px; border: 0; background: var(--cx-panel-2); color: var(--cx-muted); font-size: .8rem; font-weight: 700; }
.cx-segmented button + button { border-left: 1px solid var(--cx-line-strong); }
.cx-segmented button[aria-pressed="true"] { background: var(--cx-accent-soft); color: var(--cx-ink); box-shadow: inset 0 -2px 0 var(--cx-accent); }
.cx-localize { display: grid; gap: 12px; }
.cx-localize-status { margin: 0; color: var(--cx-muted); }
.cx-submit { width: 100%; margin-top: 16px; }
.cx-error { margin: 10px 0 0; color: var(--cx-bad); font-size: .86rem; }

/* Review */
.cx-review-panel { margin-top: 16px; padding: 20px; border: 1px solid var(--cx-line); border-radius: 10px; background: var(--cx-panel); }
.cx-review-panel:focus { outline: none; }
.cx-review-verdict { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.cx-review-verdict h2 { margin: 0; font-size: 1.35rem; }
.cx-review-verdict .cx-overline { margin-bottom: 3px; }
.cx-verdict-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--cx-good-soft);
  color: var(--cx-good);
  font-size: 1.3rem;
  font-weight: 900;
}
.cx-verdict-mark.is-wrong { background: var(--cx-bad-soft); color: var(--cx-bad); }
.cx-component-score { margin-left: auto; padding: 4px 10px; border: 1px solid var(--cx-line-strong); border-radius: 999px; font-size: .8rem; font-weight: 700; }
.cx-review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.cx-review-grid h3 { margin-bottom: 8px; font-size: .95rem; }
.cx-review-grid p { color: var(--cx-muted); font-size: .9rem; }
.cx-review-block-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.cx-findings { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.cx-findings li { display: flex; gap: 9px; align-items: flex-start; font-size: .9rem; }
.cx-findings li > span:first-child {
  display: grid;
  place-items: center;
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--tone);
  color: #0f172a;
  font-size: .74rem;
  font-weight: 900;
}
.cx-findings.is-muted li > span:first-child { opacity: .45; }
.cx-checklist-review { display: grid; gap: 6px; margin: 0; }
.cx-checklist-review div { display: grid; grid-template-columns: minmax(0, 1fr); padding: 6px 8px; border-left: 3px solid var(--cx-good); border-radius: 3px; background: var(--cx-panel-2); }
.cx-checklist-review div.is-wrong { border-left-color: var(--cx-bad); }
.cx-checklist-review dt { font-size: .82rem; font-weight: 700; }
.cx-checklist-review dd { margin: 0; color: var(--cx-muted); font-size: .78rem; }
.cx-source-credit { margin: 16px 0 0; color: var(--cx-muted); font-size: .76rem; overflow-wrap: anywhere; }
.cx-review-footer-actions { display: flex; align-items: center; gap: 12px; }
.cx-save-state { color: var(--cx-muted); font-size: .76rem; }
.cx-signin-card { justify-items: center; text-align: center; }
.cx-signin-card img { width: 44px; height: 44px; }
.cx-signin-card p { margin: 0; color: var(--cx-muted); }
.cx-gsi { min-height: 44px; }
.cx-review-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--cx-line); }

/* Results */
.cx-results-card { max-width: 760px; margin: 0 auto; padding: 28px; border: 1px solid var(--cx-line); border-radius: 10px; background: var(--cx-panel); }
.cx-results-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.cx-results-stats div { padding: 12px; border-radius: 8px; background: var(--cx-panel-2); }
.cx-results-stats span { display: block; color: var(--cx-muted); font-size: .76rem; }
.cx-results-rows { display: grid; gap: 6px; margin-bottom: 20px; }
.cx-result-row { display: flex; gap: 10px; padding: 8px 10px; border-radius: 6px; background: var(--cx-panel-2); font-size: .9rem; }
.cx-result-row span { font-weight: 900; color: var(--cx-good); }
.cx-result-row.is-wrong span { color: var(--cx-bad); }
.cx-result-row strong { font-weight: 600; }
.cx-results-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* Footer and dialogs */
.cx-footer { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; padding: 18px 16px 30px; color: var(--cx-muted); font-size: .76rem; text-align: center; }
.cx-footer p { margin: 0; }
.cx-footer-method { padding: 0; border: 0; background: none; color: var(--cx-accent); font-size: .76rem; font-weight: 700; }
.cx-dialog { width: min(560px, calc(100% - 32px)); padding: 0; border: 1px solid var(--cx-line-strong); border-radius: 12px; background: var(--cx-panel); color: var(--cx-ink); }
.cx-dialog::backdrop { background: rgba(0, 0, 0, .55); }
.cx-dialog-card { position: relative; display: grid; gap: 12px; padding: 24px; }
.cx-dialog-card h2 { margin: 0; font-size: 1.3rem; }
.cx-dialog-card label { display: grid; gap: 6px; font-size: .84rem; font-weight: 700; }
.cx-dialog-close { position: absolute; top: 10px; right: 12px; border: 0; background: none; color: var(--cx-muted); font-size: 1.5rem; }
.cx-review-steps { display: grid; gap: 10px; margin: 0; padding-left: 20px; }
.cx-review-steps li strong { display: block; }
.cx-review-steps li span { color: var(--cx-muted); font-size: .88rem; }
.cx-dialog-note { margin: 0; color: var(--cx-muted); font-size: .82rem; }

@media (max-width: 900px) {
  .cx-home-grid, .cx-workspace, .cx-review-grid { grid-template-columns: 1fr; }
  .cx-film-viewport { height: auto; aspect-ratio: 1 / 1; max-height: 62vh; }
  .cx-account-label { display: none; }
}
@media (max-width: 600px) {
  .cx-shell { padding-top: 18px; }
  .cx-launch-actions { grid-template-columns: 1fr 1fr; }
  .cx-launch-actions #startBtn { grid-column: 1 / -1; }
  .cx-panel, .cx-answer-panel, .cx-review-panel, .cx-results-card { padding: 16px; }
  .cx-slider input { width: 64px; }
  .cx-results-stats { grid-template-columns: 1fr; }
  .tool-header-context { display: none; }
}