/*
 * classroom.css — one stylesheet for the whole course.
 *
 * Loaded by the landing page, classroom pages, document pages, and (injected at
 * serve time) every lesson. Lessons therefore inherit the course look without
 * each one re-inventing typography.
 *
 * Theming: tokens on :root are light; `prefers-color-scheme: dark` supplies the
 * dark values, and explicit [data-theme] wins over both so the header toggle can
 * override the system preference in either direction.
 */

:root {
  --cl-bg: #fbfaf8;
  --cl-surface: #ffffff;
  --cl-surface-2: #f4f2ee;
  --cl-border: #e4e0d8;
  --cl-border-strong: #cfc9bd;
  --cl-text: #1f1d1a;
  --cl-text-muted: #6b6559;
  --cl-text-faint: #948d80;
  --cl-accent: #9a5b2c;
  --cl-accent-soft: #f2e4d6;
  --cl-highlight: #fbe9c3;
  --cl-highlight-active: #f6d68a;
  --cl-success: #2f6f4f;
  --cl-success-soft: #dcefe3;
  --cl-danger: #a63b34;
  --cl-danger-soft: #f7e0de;
  --cl-shadow: 0 1px 2px rgba(31, 29, 26, 0.05), 0 8px 24px rgba(31, 29, 26, 0.06);
  --cl-shadow-lifted: 0 2px 6px rgba(31, 29, 26, 0.08), 0 18px 44px rgba(31, 29, 26, 0.14);
  --cl-radius: 12px;
  --cl-radius-sm: 8px;
  --cl-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --cl-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  --cl-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --cl-measure: 34rem;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --cl-bg: #14161a;
    --cl-surface: #1b1e24;
    --cl-surface-2: #21252c;
    --cl-border: #2c313a;
    --cl-border-strong: #3d434e;
    --cl-text: #e8e6e1;
    --cl-text-muted: #a6a49d;
    --cl-text-faint: #7c7a73;
    --cl-accent: #e0a06a;
    --cl-accent-soft: #35281d;
    --cl-highlight: #4a3d1c;
    --cl-highlight-active: #6b5624;
    --cl-success: #7fc9a2;
    --cl-success-soft: #1e2f26;
    --cl-danger: #e4837b;
    --cl-danger-soft: #33211f;
    --cl-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
    --cl-shadow-lifted: 0 2px 6px rgba(0, 0, 0, 0.5), 0 18px 44px rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}

/* Explicit choice beats the system preference, in both directions. */
:root[data-theme="light"] {
  --cl-bg: #fbfaf8;
  --cl-surface: #ffffff;
  --cl-surface-2: #f4f2ee;
  --cl-border: #e4e0d8;
  --cl-border-strong: #cfc9bd;
  --cl-text: #1f1d1a;
  --cl-text-muted: #6b6559;
  --cl-text-faint: #948d80;
  --cl-accent: #9a5b2c;
  --cl-accent-soft: #f2e4d6;
  --cl-highlight: #fbe9c3;
  --cl-highlight-active: #f6d68a;
  --cl-success: #2f6f4f;
  --cl-success-soft: #dcefe3;
  --cl-danger: #a63b34;
  --cl-danger-soft: #f7e0de;
  --cl-shadow: 0 1px 2px rgba(31, 29, 26, 0.05), 0 8px 24px rgba(31, 29, 26, 0.06);
  --cl-shadow-lifted: 0 2px 6px rgba(31, 29, 26, 0.08), 0 18px 44px rgba(31, 29, 26, 0.14);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --cl-bg: #14161a;
  --cl-surface: #1b1e24;
  --cl-surface-2: #21252c;
  --cl-border: #2c313a;
  --cl-border-strong: #3d434e;
  --cl-text: #e8e6e1;
  --cl-text-muted: #a6a49d;
  --cl-text-faint: #7c7a73;
  --cl-accent: #e0a06a;
  --cl-accent-soft: #35281d;
  --cl-highlight: #4a3d1c;
  --cl-highlight-active: #6b5624;
  --cl-success: #7fc9a2;
  --cl-success-soft: #1e2f26;
  --cl-danger: #e4837b;
  --cl-danger-soft: #33211f;
  --cl-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
  --cl-shadow-lifted: 0 2px 6px rgba(0, 0, 0, 0.5), 0 18px 44px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

/* ── Base ─────────────────────────────────────────────────────────────────── */

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

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

body {
  margin: 0;
  background: var(--cl-bg);
  color: var(--cl-text);
  font-family: var(--cl-serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--cl-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

code,
pre,
kbd {
  font-family: var(--cl-mono);
  font-size: 0.9em;
}

:not(pre) > code {
  background: var(--cl-surface-2);
  border: 1px solid var(--cl-border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

pre {
  background: var(--cl-surface-2);
  border: 1px solid var(--cl-border);
  border-radius: var(--cl-radius-sm);
  padding: 0.9rem 1rem;
  overflow-x: auto;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--cl-border);
  padding: 0.5rem 0.6rem;
  text-align: left;
}

img {
  max-width: 100%;
  height: auto;
}

/* Wide content scrolls inside itself rather than pushing the page sideways. */
.cl-doc table,
.cl-lesson-content table {
  display: block;
  overflow-x: auto;
}

/* ── Header ───────────────────────────────────────────────────────────────── */

.cl-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem clamp(1rem, 4vw, 2.5rem);
  background: color-mix(in srgb, var(--cl-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cl-border);
  font-family: var(--cl-sans);
  font-size: 0.875rem;
}

.cl-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  overflow: hidden;
}

.cl-crumb {
  color: var(--cl-text-muted);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cl-crumb:hover {
  color: var(--cl-text);
}

.cl-crumb-current {
  color: var(--cl-text);
  font-weight: 600;
}

.cl-crumb-sep {
  color: var(--cl-text-faint);
}

.cl-theme-toggle {
  flex: none;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--cl-border);
  border-radius: 999px;
  background: var(--cl-surface);
  color: var(--cl-text-muted);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
}

.cl-theme-toggle:hover {
  color: var(--cl-text);
  border-color: var(--cl-border-strong);
}

/* Show the icon for the theme you would switch *to*. */
.cl-theme-icon {
  grid-area: 1 / 1;
}

.cl-theme-icon-light {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .cl-theme-icon-dark {
    display: none;
  }
  .cl-theme-icon-light {
    display: block;
  }
}

:root[data-theme="light"] .cl-theme-icon-dark {
  display: block;
}
:root[data-theme="light"] .cl-theme-icon-light {
  display: none;
}
:root[data-theme="dark"] .cl-theme-icon-light {
  display: block;
}
:root[data-theme="dark"] .cl-theme-icon-dark {
  display: none;
}

/* ── Shell layout ─────────────────────────────────────────────────────────── */

.cl-main {
  max-width: 62rem;
  margin: 0 auto;
  padding: clamp(1.75rem, 5vw, 3.5rem) clamp(1rem, 4vw, 2.5rem) 5rem;
}

.cl-hero h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.4rem;
}

.cl-hero-emoji {
  margin-right: 0.5rem;
}

.cl-lede {
  margin: 0 0 2rem;
  max-width: var(--cl-measure);
  color: var(--cl-text-muted);
  font-size: 1.05rem;
}

.cl-section {
  margin-top: 2.5rem;
}

.cl-section-title,
.cl-panel-title {
  font-family: var(--cl-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cl-text-faint);
  margin: 0 0 0.9rem;
}

/* ── Classroom cards ──────────────────────────────────────────────────────── */

.cl-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
}

.cl-card {
  display: flex;
}

.cl-card-link {
  display: flex;
  gap: 0.9rem;
  width: 100%;
  padding: 1.15rem 1.25rem;
  background: var(--cl-surface);
  border: 1px solid var(--cl-border);
  border-radius: var(--cl-radius);
  box-shadow: var(--cl-shadow);
  color: inherit;
  text-decoration: none;
  transition:
    transform 0.14s ease,
    box-shadow 0.14s ease,
    border-color 0.14s ease;
}

.cl-card-link:hover {
  transform: translateY(-2px);
  border-color: var(--cl-border-strong);
  box-shadow: var(--cl-shadow-lifted);
}

.cl-card-emoji {
  font-size: 1.6rem;
  line-height: 1.2;
}

.cl-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.cl-card-title {
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.3;
}

.cl-card-why {
  color: var(--cl-text-muted);
  font-size: 0.925rem;
  line-height: 1.45;
}

.cl-card-meta {
  font-family: var(--cl-sans);
  font-size: 0.75rem;
  color: var(--cl-text-faint);
}

/* ── Lesson list ──────────────────────────────────────────────────────────── */

.cl-lessons {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--cl-border);
  border-radius: var(--cl-radius);
  background: var(--cl-surface);
  overflow: hidden;
  box-shadow: var(--cl-shadow);
}

.cl-lesson + .cl-lesson {
  border-top: 1px solid var(--cl-border);
}

.cl-lesson-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.25rem;
  color: inherit;
  text-decoration: none;
}

.cl-lesson-link:hover {
  background: var(--cl-surface-2);
}

.cl-lesson-index {
  flex: none;
  font-family: var(--cl-mono);
  font-size: 0.8rem;
  color: var(--cl-text-faint);
}

.cl-lesson-body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}

.cl-lesson-title {
  font-weight: 600;
}

.cl-lesson-summary {
  color: var(--cl-text-muted);
  font-size: 0.925rem;
}

.cl-lesson-badges {
  display: flex;
  flex: none;
  gap: 0.35rem;
}

.cl-badge {
  font-family: var(--cl-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--cl-surface-2);
  color: var(--cl-text-muted);
  white-space: nowrap;
}

.cl-badge-score {
  background: var(--cl-success-soft);
  color: var(--cl-success);
}

.cl-badge-pending {
  background: var(--cl-accent-soft);
  color: var(--cl-accent);
}

/* ── Side panels ──────────────────────────────────────────────────────────── */

.cl-panels {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  margin-top: 2.75rem;
}

.cl-panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--cl-sans);
  font-size: 0.9rem;
}

.cl-panel-list a {
  text-decoration: none;
}

.cl-panel-list a:hover {
  text-decoration: underline;
}

/* ── Empty state ──────────────────────────────────────────────────────────── */

.cl-empty {
  border: 1px dashed var(--cl-border-strong);
  border-radius: var(--cl-radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--cl-text-muted);
}

.cl-empty-title {
  margin: 0 0 0.35rem;
  font-weight: 600;
  color: var(--cl-text);
}

.cl-empty-body {
  margin: 0;
  font-size: 0.95rem;
}

/* ── Documents ────────────────────────────────────────────────────────────── */

.cl-doc {
  max-width: var(--cl-measure);
}

.cl-doc h1,
.cl-doc h2,
.cl-doc h3 {
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 2rem 0 0.6rem;
}

.cl-doc h1:first-child {
  margin-top: 0;
}

.cl-doc blockquote {
  margin: 1.4rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--cl-border-strong);
  color: var(--cl-text-muted);
}

/* ── Lesson documents ─────────────────────────────────────────────────────── */

/*
 * Lessons are self-contained HTML written by the teacher. These rules give an
 * unstyled lesson a readable default without overriding a lesson that brought its
 * own layout — everything here is low-specificity element styling.
 */

body.cl-lesson-page {
  padding: 0;
}

.cl-lesson-shell {
  max-width: calc(var(--cl-measure) + 6rem);
  margin: 0 auto;
  padding: clamp(1.75rem, 5vw, 3.5rem) clamp(1rem, 4vw, 3rem) 6rem;
}

/* ── Highlight + ask ──────────────────────────────────────────────────────── */

mark.cl-hl {
  background: var(--cl-highlight);
  color: inherit;
  padding: 0.05em 0.06em;
  border-radius: 3px;
  cursor: pointer;
}

mark.cl-hl.cl-hl-active {
  background: var(--cl-highlight-active);
}

mark.cl-hl.cl-hl-pending {
  background: linear-gradient(
    100deg,
    var(--cl-highlight) 30%,
    var(--cl-highlight-active) 50%,
    var(--cl-highlight) 70%
  );
  background-size: 300% 100%;
  animation: cl-shimmer 1.6s ease-in-out infinite;
}

@keyframes cl-shimmer {
  from {
    background-position: 130% 0;
  }
  to {
    background-position: -30% 0;
  }
}

.cl-badge-marker {
  display: inline-grid;
  place-items: center;
  width: 1.15rem;
  height: 1.15rem;
  margin: 0 0.15rem;
  vertical-align: super;
  border: 0;
  border-radius: 999px;
  background: var(--cl-accent);
  color: var(--cl-bg);
  font-family: var(--cl-sans);
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transform: translateY(0.1em);
}

/* The explicit display above beats the UA rule for [hidden], so restate it. */
.cl-badge-marker[hidden] {
  display: none;
}

.cl-badge-marker:hover {
  filter: brightness(1.1);
}

.cl-ask-pill {
  position: absolute;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border: 0;
  border-radius: 999px;
  background: var(--cl-text);
  color: var(--cl-bg);
  font-family: var(--cl-sans);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--cl-shadow-lifted);
}

.cl-ask-pill[hidden] {
  display: none;
}

.cl-card-panel {
  position: absolute;
  z-index: 55;
  width: min(24rem, calc(100vw - 2rem));
  background: var(--cl-surface);
  border: 1px solid var(--cl-border-strong);
  border-radius: var(--cl-radius);
  box-shadow: var(--cl-shadow-lifted);
  font-family: var(--cl-sans);
  font-size: 0.9rem;
  line-height: 1.55;
  overflow: hidden;
}

.cl-card-panel[hidden] {
  display: none;
}

/*
 * A saved card sits in the document flow, directly after the block it asks about, so
 * it can never cover the passage. Only the transient composer floats.
 */
.cl-card-inline {
  position: static;
  width: auto;
  max-width: 100%;
  margin: 1.1rem 0 1.6rem;
  border-left: 3px solid var(--cl-accent);
}

.cl-card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.7rem 0.75rem 0.7rem 0.9rem;
  border-bottom: 1px solid var(--cl-border);
  background: var(--cl-surface-2);
}

.cl-card-quote {
  flex: 1;
  min-width: 0;
  margin: 0;
  color: var(--cl-text-muted);
  font-size: 0.78rem;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cl-card-actions {
  display: flex;
  align-items: center;
  flex: none;
  gap: 0.3rem;
}

/* A labelled, deliberate action — destructive things never hide behind an icon. */
.cl-text-button {
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--cl-border-strong);
  border-radius: var(--cl-radius-sm);
  background: none;
  color: var(--cl-text-muted);
  font-family: var(--cl-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
  cursor: pointer;
}

.cl-text-button:hover {
  background: var(--cl-surface);
  color: var(--cl-text);
}

/* Red at rest, not just on hover, so the consequence is legible before you point at it. */
.cl-text-button-danger {
  border-color: var(--cl-danger);
  background: var(--cl-danger-soft);
  color: var(--cl-danger);
}

.cl-text-button-danger:hover {
  background: var(--cl-danger);
  color: var(--cl-bg);
}

.cl-icon-button {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  border: 0;
  border-radius: var(--cl-radius-sm);
  background: none;
  color: var(--cl-text-faint);
  font-size: 0.9rem;
  line-height: 1;
  cursor: pointer;
}

.cl-icon-button:hover {
  background: var(--cl-border);
  color: var(--cl-text);
}

.cl-card-content {
  padding: 0.85rem 0.9rem;
  max-height: 24rem;
  overflow-y: auto;
}

.cl-card-question {
  margin: 0 0 0.6rem;
  font-weight: 600;
}

/* Each turn of the thread. Follow-ups are ruled off so a long card stays readable. */
.cl-card-turn + .cl-card-turn {
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--cl-border);
}

.cl-card-turn-followup .cl-card-question::before {
  content: "↳ ";
  color: var(--cl-text-faint);
  font-weight: 400;
}

/* The follow-up composer, pinned under the (scrollable) thread in the same card. */
.cl-card-followup {
  padding: 0.8rem 0.9rem 0.9rem;
  border-top: 1px solid var(--cl-border);
  background: var(--cl-surface-2);
}

.cl-card-followup[hidden] {
  display: none;
}

.cl-card-followup textarea {
  min-height: 3rem;
}

.cl-card-answer > :first-child {
  margin-top: 0;
}

.cl-card-answer > :last-child {
  margin-bottom: 0;
}

.cl-card-answer pre {
  font-size: 0.8rem;
}

.cl-card-status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--cl-text-muted);
  font-size: 0.85rem;
}

.cl-spinner {
  width: 0.85rem;
  height: 0.85rem;
  border: 2px solid var(--cl-border-strong);
  border-top-color: var(--cl-accent);
  border-radius: 999px;
  animation: cl-spin 0.7s linear infinite;
}

@keyframes cl-spin {
  to {
    transform: rotate(360deg);
  }
}

.cl-card-form {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.cl-card-form textarea {
  width: 100%;
  min-height: 4.5rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--cl-border-strong);
  border-radius: var(--cl-radius-sm);
  background: var(--cl-bg);
  color: var(--cl-text);
  font: inherit;
  resize: vertical;
}

.cl-card-form textarea:focus-visible {
  outline: 2px solid var(--cl-accent);
  outline-offset: 1px;
}

.cl-card-form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.cl-hint {
  color: var(--cl-text-faint);
  font-size: 0.75rem;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.cl-button {
  padding: 0.4rem 0.85rem;
  border: 1px solid transparent;
  border-radius: var(--cl-radius-sm);
  background: var(--cl-accent);
  color: var(--cl-bg);
  font-family: var(--cl-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.cl-button:hover:not(:disabled) {
  filter: brightness(1.08);
}

.cl-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.cl-button-quiet {
  background: none;
  border-color: var(--cl-border-strong);
  color: var(--cl-text-muted);
}

.cl-button-quiet:hover:not(:disabled) {
  color: var(--cl-text);
  filter: none;
}

.cl-button-danger {
  background: var(--cl-danger);
  color: var(--cl-bg);
}

/* ── Confirmation dialog ──────────────────────────────────────────────────── */

.cl-confirm {
  width: min(24rem, calc(100vw - 2rem));
  padding: 1.1rem 1.2rem 1.2rem;
  border: 1px solid var(--cl-border-strong);
  border-radius: var(--cl-radius);
  background: var(--cl-surface);
  color: var(--cl-text);
  font-family: var(--cl-sans);
  box-shadow: var(--cl-shadow-lifted);
}

.cl-confirm::backdrop {
  background: rgba(31, 29, 26, 0.42);
}

.cl-confirm-title {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 700;
}

.cl-confirm-body {
  margin: 0 0 1.1rem;
  color: var(--cl-text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.cl-confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* ── Quizzes ──────────────────────────────────────────────────────────────── */

.cl-quiz {
  margin: 2.5rem 0;
  padding: 1.25rem 1.4rem 1.4rem;
  border: 1px solid var(--cl-border);
  border-radius: var(--cl-radius);
  background: var(--cl-surface);
  box-shadow: var(--cl-shadow);
}

.cl-quiz-title {
  font-family: var(--cl-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cl-text-faint);
  margin: 0 0 1rem;
}

.cl-questions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  counter-reset: cl-question;
}

.cl-q {
  position: relative;
  padding-left: 2rem;
  counter-increment: cl-question;
}

.cl-q::before {
  content: counter(cl-question);
  position: absolute;
  left: 0;
  top: 0.15rem;
  display: grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid var(--cl-border-strong);
  border-radius: 999px;
  font-family: var(--cl-mono);
  font-size: 0.7rem;
  color: var(--cl-text-faint);
}

.cl-q-prompt {
  margin: 0 0 0.7rem;
  font-weight: 600;
}

.cl-options {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cl-options label {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--cl-border);
  border-radius: var(--cl-radius-sm);
  cursor: pointer;
}

.cl-options label:hover {
  border-color: var(--cl-border-strong);
  background: var(--cl-surface-2);
}

.cl-options input {
  margin-top: 0.35em;
  accent-color: var(--cl-accent);
}

.cl-q textarea,
.cl-q input[type="text"] {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--cl-border-strong);
  border-radius: var(--cl-radius-sm);
  background: var(--cl-bg);
  color: var(--cl-text);
  font: inherit;
  resize: vertical;
}

.cl-quiz-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--cl-border);
}

.cl-quiz-status {
  font-family: var(--cl-sans);
  font-size: 0.85rem;
  color: var(--cl-text-muted);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.cl-quiz[data-state="submitted"] .cl-options label,
.cl-quiz[data-state="graded"] .cl-options label {
  cursor: default;
}

.cl-grade-banner {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 1.2rem;
  padding: 0.85rem 1rem;
  border-radius: var(--cl-radius-sm);
  background: var(--cl-surface-2);
  font-family: var(--cl-sans);
}

.cl-grade-score {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
}

.cl-grade-banner[data-tone="pass"] {
  background: var(--cl-success-soft);
  color: var(--cl-success);
}

.cl-grade-banner[data-tone="mixed"] {
  background: var(--cl-accent-soft);
  color: var(--cl-accent);
}

.cl-grade-banner[data-tone="fail"] {
  background: var(--cl-danger-soft);
  color: var(--cl-danger);
}

.cl-grade-feedback {
  margin: 0 0 1.2rem;
  font-size: 0.95rem;
}

.cl-grade-feedback > :first-child {
  margin-top: 0;
}

.cl-q-verdict {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 0.6rem;
  padding: 0.5rem 0.65rem;
  border-radius: var(--cl-radius-sm);
  font-family: var(--cl-sans);
  font-size: 0.85rem;
}

.cl-q-verdict[data-correct="true"] {
  background: var(--cl-success-soft);
  color: var(--cl-success);
}

.cl-q-verdict[data-correct="false"] {
  background: var(--cl-danger-soft);
  color: var(--cl-danger);
}

/* ── Motion ───────────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Print ────────────────────────────────────────────────────────────────── */

@media print {
  .cl-header,
  .cl-ask-pill,
  .cl-card-panel,
  .cl-confirm,
  .cl-badge-marker,
  .cl-quiz-footer {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }
}