/* AI Mentor — Phase 1+ styles
 *
 * The /learn surface deliberately reuses curriculum (cur-*) classes from
 * styles.css for its skeleton (cur-home, cur-levels-grid, cur-level-card,
 * cur-modules-grid, cur-module-card, cur-lesson-list, cur-reader,
 * cur-reader-content, cur-takeaways, cur-related-labs). The styles in this
 * file only override / extend those for the mentor layer, threat panels,
 * MCQ cards, and chat — anything that's specific to /learn and not part of
 * the existing curriculum aesthetic.
 */

.learn-empty {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--card-radius);
  padding: 4rem 2rem;
  text-align: center;
  color: var(--muted-foreground);
}

.learn-empty h1 {
  color: var(--foreground);
  margin-bottom: 0.6rem;
  font-size: 1.6rem;
}

/* ── Breadcrumb (mirrors curriculum's pattern) ── */
.cur-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--muted-foreground);
  margin-bottom: 1rem;
}

.cur-breadcrumb-link {
  color: var(--muted-foreground);
  text-decoration: none;
}

.cur-breadcrumb-link:hover {
  color: var(--accent);
}

.cur-breadcrumb-current {
  color: var(--foreground);
  font-weight: 500;
}

.cur-breadcrumb-sep {
  color: var(--border);
}

/* ── Audience tag on level cards ── */
.cur-audience-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted-foreground);
  background: var(--muted);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  margin-top: 0.5rem;
}

/* ── Live intel CTA on the home page (between pedagogy strip and level grid) ── */
.learn-home-intel-cta {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.1rem;
  background: linear-gradient(90deg, oklch(from var(--success) l c h / 8%), oklch(from var(--card) l c h / 100%));
  border: 1px solid oklch(from var(--success) l c h / 30%);
  border-radius: var(--card-radius);
  text-decoration: none;
  color: var(--foreground);
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.learn-home-intel-cta:hover {
  border-color: oklch(from var(--success) l c h / 60%);
  transform: translateY(-1px);
}

.learn-home-intel-cta-text {
  font-size: 0.92rem;
  color: var(--foreground);
  line-height: 1.5;
}

.learn-home-intel-cta-arrow {
  font-size: 1.1rem;
  color: var(--success);
  font-weight: 700;
}

/* ── Pedagogy strip (Why both free + mentor) ── */
.pedagogy-strip {
  position: relative;
  background: linear-gradient(135deg, oklch(from var(--accent) l c h / 12%), oklch(from var(--card) l c h / 100%));
  border: 1px solid oklch(from var(--accent) l c h / 30%);
  border-radius: var(--card-radius);
  padding: 1.1rem 1.3rem 1rem;
  margin: 0 0 1.25rem;
}

.pedagogy-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--foreground);
}

.pedagogy-title em {
  color: var(--accent);
  font-style: normal;
}

.pedagogy-body {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--foreground);
  margin: 0 0 0.7rem;
  max-width: 60ch;
}

.pedagogy-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.4rem 1.2rem;
}

.pedagogy-points li {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted-foreground);
  padding-left: 0.9rem;
  position: relative;
}

.pedagogy-points li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.pedagogy-points li strong {
  color: var(--foreground);
  font-weight: 600;
}

.pedagogy-dismiss {
  position: absolute;
  top: 0.4rem;
  right: 0.55rem;
  background: transparent;
  border: none;
  color: var(--muted-foreground);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
  padding: 0.2rem 0.45rem;
  border-radius: 0.4rem;
}

.pedagogy-dismiss:hover {
  background: var(--muted);
  color: var(--foreground);
}

/* ── Stage tags label each section so Free vs Mentor never blurs ── */
.lesson-stage {
  position: relative;
  margin: 0 0 1.4rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--border);
}

.lesson-stage[data-stage="threats"] { border-left-color: oklch(from var(--accent) l c h / 50%); }
.lesson-stage[data-stage="mentor"] { border-left-color: oklch(from var(--accent) l c h / 80%); }
.lesson-stage[data-stage="reference"] { border-left-color: oklch(from var(--success) l c h / 60%); }
.lesson-stage[data-stage="lab"] { border-left-color: oklch(from var(--warning) l c h / 70%); }

.lesson-stage-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted-foreground);
  background: var(--muted);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  margin: 0 0 0.55rem -0.95rem;
}

.lesson-stage-tag-mentor {
  background: oklch(from var(--accent) l c h / 18%);
  color: var(--accent);
}

.lesson-stage-tag-lab {
  background: oklch(from var(--warning) l c h / 18%);
  color: var(--warning);
}

.lesson-stage-hint {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted-foreground);
  margin: 0 0 0.55rem;
  max-width: 56ch;
}

.lesson-takeaways { margin-top: 1.4rem; }

/* ── Mentor narration ── */
.mentor-card {
  position: relative;
  background: linear-gradient(180deg, oklch(from var(--accent) l c h / 4%), oklch(from var(--card) l c h / 100%));
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  margin-bottom: 1.25rem;
  overflow: hidden;
  box-shadow: 0 1px 0 oklch(from var(--accent) l c h / 6%),
              0 14px 40px -28px oklch(from var(--accent) l c h / 25%);
}

.mentor-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    oklch(from var(--accent) l c h / 80%) 35%,
    oklch(from var(--accent) l c h / 80%) 65%,
    transparent 100%
  );
  pointer-events: none;
}

.mentor-card h2 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mentor-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: oklch(from var(--accent) l c h / 18%);
  color: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}

.mentor-toolbar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

/* ── Unified AI Mentor card — wraps walkthrough + chat under one header ── */
.ai-mentor-card {
  position: relative;
  background: linear-gradient(180deg, oklch(from var(--accent) l c h / 5%), oklch(from var(--card) l c h / 100%) 35%);
  border: 1px solid oklch(from var(--accent) l c h / 30%);
  border-radius: var(--card-radius);
  padding: 1.5rem var(--card-padding) var(--card-padding);
  margin-bottom: 1.25rem;
  overflow: hidden;
  box-shadow: 0 1px 0 oklch(from var(--accent) l c h / 8%),
              0 16px 48px -32px oklch(from var(--accent) l c h / 30%);
}

.ai-mentor-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    transparent 0%,
    oklch(from var(--accent) l c h / 80%) 35%,
    oklch(from var(--accent) l c h / 80%) 65%,
    transparent 100%);
  pointer-events: none;
}

.ai-mentor-card-head {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-bottom: 1.2rem;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid oklch(from var(--accent) l c h / 18%);
}

.ai-mentor-card-head .mentor-badge { align-self: flex-start; }

.ai-mentor-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
  color: var(--foreground);
}

.ai-mentor-card-sub {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--muted-foreground);
  max-width: 60ch;
}

.ai-mentor-memory-pill {
  margin: 0.4rem 0 0;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: oklch(from var(--success) l c h / 14%);
  color: var(--success);
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  align-self: flex-start;
  width: fit-content;
}

.ai-mentor-memory-pill::before {
  content: "🧠";
  filter: grayscale(0.2);
}

.walkthrough-section {
  margin-bottom: 1.5rem;
}

.walkthrough-eyebrow {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-foreground);
  align-self: flex-start;
}

/* ── Structured AI Mentor walkthrough ── */
.walkthrough { padding: 1.4rem var(--card-padding) var(--card-padding); }

.walkthrough-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.2rem;
  align-items: start;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid oklch(from var(--accent) l c h / 18%);
}

.walkthrough-head-titles {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.walkthrough-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--foreground);
}

.walkthrough-sub {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted-foreground);
  line-height: 1.5;
  max-width: 56ch;
}

.walkthrough-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.walkthrough-stat {
  font-size: 0.7rem;
  color: var(--muted-foreground);
  background: var(--muted);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-variant-numeric: tabular-nums;
}

.walkthrough-stat strong { color: var(--foreground); font-weight: 700; }

.walkthrough-stat-live {
  color: var(--success);
  background: oklch(from var(--success) l c h / 14%);
}

.walkthrough-stat-idle { color: var(--accent); background: oklch(from var(--accent) l c h / 14%); }

.walkthrough-stat-done { color: var(--success); background: oklch(from var(--success) l c h / 14%); }

.walkthrough-pulse {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--success);
  position: relative;
}

.walkthrough-pulse::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 999px;
  background: oklch(from var(--success) l c h / 50%);
  animation: walkthrough-pulse-ring 1.6s ease-out infinite;
}

@keyframes walkthrough-pulse-ring {
  0%   { transform: scale(0.6); opacity: 0.7; }
  100% { transform: scale(2.3); opacity: 0; }
}

.walkthrough-launch {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.2rem 1.3rem;
  background: oklch(from var(--accent) l c h / 6%);
  border: 1px dashed oklch(from var(--accent) l c h / 30%);
  border-radius: var(--card-radius);
  align-items: flex-start;
}

.walkthrough-launch-copy {
  margin: 0;
  font-size: 0.9rem;
  color: var(--foreground);
  line-height: 1.55;
  max-width: 56ch;
}

.walkthrough-launch-btn {
  font-size: 0.95rem;
  padding: 0.65rem 1.4rem;
}

.walkthrough-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1rem;
}

.walkthrough-flow {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.walkthrough-step {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  position: relative;
}

.walkthrough-step::before {
  content: "";
  position: absolute;
  left: 1.15rem;
  top: 2.4rem;
  bottom: -1rem;
  width: 1px;
  background: var(--border);
}

.walkthrough-step:last-child::before { display: none; }

.walkthrough-step-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  z-index: 1;
}

.walkthrough-step-marker-mcq {
  background: oklch(from var(--warning) l c h / 16%);
  border-color: oklch(from var(--warning) l c h / 40%);
  color: var(--warning);
  font-size: 1rem;
}

.walkthrough-step-marker-lab {
  background: oklch(from var(--accent) l c h / 16%);
  border-color: oklch(from var(--accent) l c h / 50%);
  color: var(--accent);
}

.walkthrough-step-marker-next {
  background: oklch(from var(--success) l c h / 14%);
  border-color: oklch(from var(--success) l c h / 40%);
  color: var(--success);
}

.walkthrough-step-marker-streaming {
  background: transparent;
  border-style: dashed;
}

.walkthrough-step-body {
  min-width: 0;
  padding-top: 0.2rem;
}

.walkthrough-step-title {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--foreground);
}

.walkthrough-step-content { line-height: 1.65; }
.walkthrough-step-content > :first-child { margin-top: 0; }
.walkthrough-step-content > :last-child  { margin-bottom: 0; }

.walkthrough-step-prebrief .walkthrough-step-body {
  padding: 0.85rem 1rem;
  background: oklch(from var(--accent) l c h / 8%);
  border: 1px solid oklch(from var(--accent) l c h / 22%);
  border-radius: var(--card-radius-sm);
}

.walkthrough-step-next .walkthrough-step-body {
  font-size: 0.92rem;
  color: var(--foreground);
}

.walkthrough-streaming-body {
  display: inline-flex;
  gap: 0.3rem;
  padding-top: 0.7rem;
}

.walkthrough-streaming-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--accent);
  opacity: 0.5;
  animation: walkthrough-streaming-bounce 1.2s ease-in-out infinite;
}

.walkthrough-streaming-dot:nth-child(2) { animation-delay: 0.15s; }
.walkthrough-streaming-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes walkthrough-streaming-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%           { transform: translateY(-0.25rem); opacity: 1; }
}

.mentor-section {
  /* legacy class still emitted by older serialised text — keep functional */
  margin: 0 0 1.1rem;
}

.mentor-section h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--foreground);
  margin: 0 0 0.4rem;
  border-left: 3px solid var(--accent);
  padding-left: 0.6rem;
}

.mentor-section p {
  margin: 0 0 0.6rem;
  line-height: 1.6;
  color: var(--foreground);
}

/* ── MCQ card ── */
.mcq-card {
  background: oklch(from var(--warning) l c h / 8%);
  border: 1px solid oklch(from var(--warning) l c h / 25%);
  border-radius: var(--card-radius-sm);
  padding: 0.95rem 1rem;
  margin: 0.85rem 0 1.2rem;
}

.mcq-q {
  font-weight: 600;
  margin-bottom: 0.7rem;
  line-height: 1.45;
}

.mcq-choices {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mcq-choice {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  text-align: left;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0.55rem 0.7rem;
  border-radius: var(--card-radius-sm);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}

.mcq-choice:hover:not([disabled]) {
  border-color: var(--accent);
  background: oklch(from var(--accent) l c h / 8%);
}

.mcq-choice:disabled { cursor: default; }

.mcq-letter {
  font-weight: 700;
  width: 1.4rem;
  text-align: center;
  color: var(--muted-foreground);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.mcq-text { flex: 1; }

.mcq-mark {
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.mcq-mark-muted {
  font-weight: 500;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--success);
}

.mcq-choice-correct {
  border-color: oklch(from var(--success) l c h / 60%);
  background: oklch(from var(--success) l c h / 10%);
  color: var(--foreground);
}

.mcq-choice-correct .mcq-letter,
.mcq-choice-correct .mcq-mark {
  color: var(--success);
}

.mcq-choice-wrong {
  border-color: oklch(from var(--destructive) l c h / 50%);
  background: oklch(from var(--destructive) l c h / 10%);
}

.mcq-choice-wrong .mcq-letter,
.mcq-choice-wrong .mcq-mark {
  color: var(--destructive);
}

.mcq-choice-dim { opacity: 0.6; }

.mcq-why {
  margin-top: 0.65rem;
  padding: 0.55rem 0.7rem;
  border-radius: var(--card-radius-sm);
  font-size: 0.88rem;
  line-height: 1.5;
}

.mcq-why-correct {
  background: oklch(from var(--success) l c h / 12%);
  color: var(--foreground);
}

.mcq-why-wrong {
  background: oklch(from var(--destructive) l c h / 12%);
  color: var(--foreground);
}

/* ── End-of-lesson MCQ summary ── */
.mcq-summary {
  margin-top: 1.2rem;
  background: var(--card);
  border: 1px solid var(--accent);
  border-radius: var(--card-radius);
  padding: 1rem 1.1rem;
}

.mcq-summary-head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.7rem;
}

.mcq-summary-score {
  font-size: 1.6rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.mcq-summary-pct {
  font-size: 0.95rem;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
}

.mcq-summary-grade {
  margin-left: auto;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--accent);
  background: oklch(from var(--accent) l c h / 14%);
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
}

.mcq-summary-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mcq-summary-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.45rem 0.55rem;
  border-radius: var(--card-radius-sm);
  font-size: 0.88rem;
  line-height: 1.45;
}

.mcq-summary-row-ok {
  background: oklch(from var(--success) l c h / 10%);
}

.mcq-summary-row-bad {
  background: oklch(from var(--destructive) l c h / 10%);
}

.mcq-summary-num {
  font-weight: 700;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  font-family: var(--font-mono);
}

.mcq-summary-q { flex: 1; }

.mcq-summary-mark {
  font-weight: 800;
  flex-shrink: 0;
}

.mcq-summary-row-ok .mcq-summary-mark { color: var(--success); }
.mcq-summary-row-bad .mcq-summary-mark { color: var(--destructive); }

.mentor-prebrief {
  background: oklch(from var(--accent) l c h / 10%);
  border: 1px solid oklch(from var(--accent) l c h / 25%);
  border-radius: var(--card-radius-sm);
  padding: 0.9rem 1rem;
  margin: 1rem 0 0.6rem;
}

.mentor-prebrief h4 {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.mentor-next {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--muted-foreground);
  border-top: 1px dashed var(--border);
  padding-top: 0.8rem;
}

.mentor-cursor {
  display: inline-block;
  width: 0.55ch;
  height: 1em;
  background: var(--accent);
  vertical-align: -0.1em;
  margin-left: 0.1em;
  animation: mentor-blink 0.95s infinite step-end;
}

@keyframes mentor-blink {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0; }
}

.mentor-error {
  background: oklch(from var(--destructive) l c h / 12%);
  border: 1px solid oklch(from var(--destructive) l c h / 30%);
  color: var(--destructive);
  padding: 0.7rem 0.9rem;
  border-radius: var(--card-radius-sm);
  margin: 0.5rem 0;
}

/* ── Threats panels (relevant to lesson + global fresh feed) ── */
.threats-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
}

.threats-panel-relevant { border-left: 3px solid var(--accent); }
.threats-panel-fresh { border-left: 3px solid oklch(from var(--success) l c h / 70%); }

.threats-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.55rem;
}

.threats-count {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
}

.threats-subhead {
  margin: 0 0 0.7rem;
  font-size: 0.82rem;
  color: var(--muted-foreground);
  line-height: 1.5;
  max-width: 56ch;
}

.threats-pulse-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: oklch(from var(--success) l c h / 14%);
  color: var(--success);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.threats-pulse-dot {
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--success);
  position: relative;
}

.threats-pulse-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 999px;
  background: oklch(from var(--success) l c h / 50%);
  animation: threats-pulse-ring 2s ease-out infinite;
}

@keyframes threats-pulse-ring {
  0%   { transform: scale(0.6); opacity: 0.7; }
  100% { transform: scale(2.4); opacity: 0; }
}

.threats-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 0.65rem;
}

.threat-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius-sm);
  padding: 0.7rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  overflow: hidden;
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.threat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border);
  transition: background 0.16s ease;
}

.threat-card:hover {
  border-color: oklch(from var(--accent) l c h / 60%);
  transform: translateY(-1px);
}
.threat-card:hover::before { background: var(--accent); }

.threat-card-sev-critical::before { background: oklch(from var(--destructive) l c h / 80%); }
.threat-card-sev-high::before { background: oklch(from var(--destructive) l c h / 50%); }
.threat-card-sev-medium::before { background: oklch(from var(--warning) l c h / 70%); }
.threat-card-sev-low::before { background: oklch(from var(--success) l c h / 60%); }

.threat-card-meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.threat-card-kind {
  font-weight: 700;
  color: var(--muted-foreground);
}

.threat-card-sev {
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

.threat-card-date {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--muted-foreground);
  letter-spacing: 0;
  text-transform: none;
}

.threat-card-title {
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--foreground);
  text-decoration: none;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

a.threat-card-title:hover { color: var(--accent); }

/* Severity pill colours used inside threat cards (and elsewhere) */
.threat-sev-critical { background: oklch(from var(--destructive) l c h / 22%); color: var(--destructive); }
.threat-sev-high { background: oklch(from var(--destructive) l c h / 14%); color: var(--destructive); }
.threat-sev-medium { background: oklch(from var(--warning) l c h / 18%); color: var(--warning); }
.threat-sev-low { background: oklch(from var(--success) l c h / 14%); color: var(--success); }
.threat-sev-unknown { background: var(--card); color: var(--muted-foreground); }

/* ── Source-content expander ── */
.source-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  padding: 0.45rem 0.85rem;
  border-radius: var(--card-radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  font-weight: 500;
}

.source-toggle:hover { color: var(--foreground); }

.source-body {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  margin-top: 1rem;
  line-height: 1.65;
}

.source-body p { margin: 0 0 0.85rem; }
.source-body h3 { font-size: 1.05rem; margin: 1.1rem 0 0.5rem; }
.source-body code {
  background: var(--muted);
  padding: 0.1rem 0.35rem;
  border-radius: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* ── Lab block ── */
.lab-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  margin: 1.25rem 0;
}

.lab-block h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.lab-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--muted);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
  margin-right: 0.4rem;
  margin-bottom: 0.4rem;
  color: var(--foreground);
  text-decoration: none;
  border: 1px solid transparent;
}

.lab-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Chat panel — polished ── */
.chat-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* When nested inside .ai-mentor-card the outer card owns the chrome already. */
.ai-mentor-card .chat-panel {
  margin-top: 0;
  background: oklch(from var(--card) l c h / 96%);
  border-color: oklch(from var(--accent) l c h / 18%);
  box-shadow: none;
}

.chat-header {
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
}

.chat-header-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.chat-header-meta {
  font-size: 0.72rem;
  color: var(--muted-foreground);
  font-style: italic;
}

.chat-history {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.1rem;
  max-height: 32rem;
  overflow-y: auto;
}

.chat-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-width: 88%;
}

.chat-row-user {
  align-self: flex-end;
  align-items: flex-end;
}

.chat-row-assistant {
  align-self: flex-start;
  align-items: flex-start;
}

.chat-role {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted-foreground);
  padding: 0 0.2rem;
}

.chat-row-user .chat-role { color: var(--accent); }

.chat-bubble {
  padding: 0.7rem 0.95rem;
  border-radius: var(--card-radius-sm);
  line-height: 1.55;
  font-size: 0.92rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-bubble-user {
  background: oklch(from var(--accent) l c h / 18%);
  border: 1px solid oklch(from var(--accent) l c h / 24%);
  color: var(--foreground);
  border-bottom-right-radius: 0.25rem;
}

.chat-bubble-assistant {
  background: var(--muted);
  color: var(--foreground);
  border-bottom-left-radius: 0.25rem;
}

.chat-empty {
  color: var(--foreground);
  padding: 0.5rem 0.4rem 1rem;
}

.chat-empty-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
}

.chat-empty-hint {
  font-size: 0.85rem;
  color: var(--muted-foreground);
  margin: 0 0 0.85rem;
  line-height: 1.5;
}

.chat-example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.45rem;
}

.chat-example {
  text-align: left;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0.55rem 0.7rem;
  border-radius: var(--card-radius-sm);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  line-height: 1.4;
  transition: border-color 0.16s ease, background 0.16s ease;
}

.chat-example:hover:not(:disabled) {
  border-color: var(--accent);
  background: oklch(from var(--accent) l c h / 8%);
  color: var(--accent);
}

.chat-example:disabled { opacity: 0.5; cursor: not-allowed; }

.chat-thinking {
  display: inline-flex;
  gap: 0.3rem;
  padding: 0.35rem 0.6rem;
  align-self: flex-start;
}

.chat-thinking span {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--muted-foreground);
  opacity: 0.5;
  animation: chat-thinking-bounce 1.2s ease-in-out infinite;
}

.chat-thinking span:nth-child(2) { animation-delay: 0.15s; }
.chat-thinking span:nth-child(3) { animation-delay: 0.3s; }

@keyframes chat-thinking-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%           { transform: translateY(-0.25rem); opacity: 0.95; }
}

.chat-form {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.85rem 1.1rem 1rem;
  border-top: 1px solid var(--border);
  background: oklch(from var(--card) l c h / 70%);
}

.chat-input {
  width: 100%;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--card-radius-sm);
  padding: 0.65rem 0.8rem;
  color: var(--foreground);
  font: inherit;
  font-size: 0.92rem;
  resize: none;
  min-height: 2.6rem;
  line-height: 1.5;
  transition: border-color 0.16s ease;
}

.chat-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--card);
}

.chat-form-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.chat-shortcut {
  font-size: 0.7rem;
  color: var(--muted-foreground);
  font-family: var(--font-mono);
}

.chat-send {
  background: var(--accent);
  color: var(--accent-foreground);
  border: none;
  padding: 0.45rem 1rem;
  border-radius: var(--card-radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: opacity 0.16s ease;
}

.chat-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.button-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0.4rem 0.85rem;
  border-radius: var(--card-radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  font-weight: 500;
}

.button-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.button-primary {
  background: var(--accent);
  color: var(--accent-foreground);
  border: none;
  padding: 0.4rem 0.95rem;
  border-radius: var(--card-radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  font-weight: 600;
}

.button-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Intel page (#intel) — live AI security feed ── */
.intel-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin: 0 0 1.2rem;
}

.intel-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.intel-filter {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: border-color 0.16s ease, color 0.16s ease;
}

.intel-filter:hover {
  border-color: var(--accent);
  color: var(--foreground);
}

.intel-filter-active {
  background: oklch(from var(--accent) l c h / 14%);
  color: var(--accent);
  border-color: oklch(from var(--accent) l c h / 50%);
}

.intel-filter-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--muted);
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
}

.intel-filter-active .intel-filter-count {
  background: oklch(from var(--accent) l c h / 24%);
}

.intel-last-refreshed {
  font-size: 0.72rem;
  color: var(--muted-foreground);
  font-family: var(--font-mono);
  margin-left: auto;
}

.intel-grid {
  grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
}

.intel-card {
  padding: 0.95rem 1.05rem;
  gap: 0.6rem;
}

.intel-card-summary {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--muted-foreground);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.intel-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: auto;
}

.intel-tag {
  font-size: 0.68rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: var(--muted);
  color: var(--muted-foreground);
  font-family: var(--font-mono);
}

/* `.intel-verified` and `.intel-admin-remove` were here. Both removed:
   the public intel feed is now approved-only (so every card is implicitly
   verified — no need for a pill) and admin actions live exclusively on
   /admin/review so the public page never renders destructive controls. */

/* ── Markdown rendering inside chat bubbles ── */
.md-content { line-height: 1.55; }

.md-content > :first-child { margin-top: 0; }
.md-content > :last-child  { margin-bottom: 0; }

.md-content p {
  margin: 0 0 0.7rem;
  color: var(--foreground);
}

.md-content .md-h {
  margin: 0.95rem 0 0.4rem;
  font-weight: 700;
  color: var(--foreground);
  line-height: 1.25;
}

.md-content h3.md-h { font-size: 1.05rem; }
.md-content h4.md-h { font-size: 0.98rem; }
.md-content h5.md-h { font-size: 0.92rem; }
.md-content h6.md-h { font-size: 0.86rem; color: var(--muted-foreground); }

.md-content code {
  background: oklch(from var(--foreground) l c h / 8%);
  padding: 0.1rem 0.35rem;
  border-radius: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.md-content .md-pre {
  margin: 0.65rem 0;
  padding: 0.75rem 0.95rem;
  background: oklch(from var(--foreground) l c h / 6%);
  border: 1px solid var(--border);
  border-radius: var(--card-radius-sm);
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
}

.md-content .md-pre code {
  background: transparent;
  padding: 0;
  font-size: inherit;
}

.md-content .md-ul,
.md-content .md-ol {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.4rem;
}

.md-content .md-ul li,
.md-content .md-ol li {
  margin: 0.25rem 0;
}

.md-content strong { color: var(--foreground); font-weight: 700; }
.md-content em { color: var(--foreground); font-style: italic; }

/* ── Follow-up suggestion chips after a mentor reply ── */
.chat-followups {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.chat-followup {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  line-height: 1.3;
  transition: border-color 0.16s ease, color 0.16s ease, background 0.16s ease;
}

.chat-followup:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
  background: oklch(from var(--accent) l c h / 8%);
}

.chat-followup::before {
  content: "→ ";
  color: var(--muted-foreground);
}

.chat-followup:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Mark as Read button (curriculum parity) ── */
.cur-mark-read-wrap {
  display: flex;
  justify-content: center;
  margin: 2rem 0 1.25rem;
}

.cur-mark-read {
  background: var(--accent);
  color: var(--accent-foreground);
  border: none;
  padding: 0.65rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.cur-mark-read:hover:not(:disabled) {
  transform: translateY(-1px);
}

.cur-mark-read:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.cur-mark-read.cur-mark-read-done {
  background: oklch(from var(--success) l c h / 16%);
  color: var(--success);
  border: 1px solid oklch(from var(--success) l c h / 40%);
}

/* ── Prev/Next lesson nav at end of reader ── */
.cur-reader-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1rem 0 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.cur-reader-nav-link {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.95rem 1.05rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  color: var(--foreground);
  text-decoration: none;
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.cur-reader-nav-link:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.cur-reader-nav-prev { text-align: left; }
.cur-reader-nav-next { text-align: right; }

.cur-reader-nav-dir {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
}

.cur-reader-nav-link:hover .cur-reader-nav-dir {
  color: var(--accent);
}

.cur-reader-nav-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--foreground);
}

.cur-reader-nav-spacer {
  /* placeholder so flex/grid layout stays balanced when there's no prev or next */
}

/* ── AI Mentor upgrade strip — compact, additive, sits BELOW the reading.
 *   Replaces the old big paywall card that was being misread as
 *   "this lesson is locked".
 */
.mentor-upgrade {
  margin: 1.5rem 0;
  padding: 1rem 1.1rem;
  border: 1px dashed oklch(from var(--accent) l c h / 35%);
  border-radius: var(--card-radius);
  background: linear-gradient(
    90deg,
    oklch(from var(--accent) l c h / 5%),
    oklch(from var(--card) l c h / 100%) 60%
  );
}

.mentor-upgrade-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.mentor-upgrade-tier {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: oklch(from var(--warning) l c h / 18%);
  color: var(--warning);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
}

.mentor-upgrade-body {
  margin: 0 0 0.7rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--foreground);
  max-width: 62ch;
}

.mentor-upgrade-body strong { font-weight: 700; }

.mentor-upgrade-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
}

.mentor-upgrade-fine {
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

/* ── Two offering cards on /learn home: Academy (free) + AI Mentor (add-on) ── */
.learn-offerings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr));
  gap: 1.1rem;
  margin: 0.5rem 0 0;
}

.learn-offering {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.5rem 1.55rem 1.55rem;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  background: var(--card);
  overflow: hidden;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.learn-offering:hover { transform: translateY(-2px); }

.learn-offering::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--border);
}

.learn-offering-academy::before { background: oklch(from var(--success) l c h / 70%); }
.learn-offering-mentor::before {
  background: linear-gradient(90deg,
    oklch(from var(--accent) l c h / 50%) 0%,
    oklch(from var(--accent) l c h / 100%) 50%,
    oklch(from var(--accent) l c h / 50%) 100%);
}

.learn-offering-academy:hover { border-color: oklch(from var(--success) l c h / 50%); }
.learn-offering-mentor {
  background:
    radial-gradient(ellipse at top right, oklch(from var(--accent) l c h / 14%), transparent 60%),
    linear-gradient(160deg, oklch(from var(--accent) l c h / 6%), oklch(from var(--card) l c h / 100%) 65%);
  border-color: oklch(from var(--accent) l c h / 40%);
}

.learn-offering-mentor:hover { border-color: oklch(from var(--accent) l c h / 65%); }

.learn-offering-head {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.learn-offering-tag {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--success);
  background: oklch(from var(--success) l c h / 16%);
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  align-self: flex-start;
}

.learn-offering-tag-paid {
  color: var(--accent);
  background: oklch(from var(--accent) l c h / 18%);
}

.learn-offering-title {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0;
}

.learn-offering-body {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--foreground);
}

.learn-offering-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.learn-offering-points li {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted-foreground);
  padding-left: 1.15rem;
  position: relative;
}

.learn-offering-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.learn-offering-academy .learn-offering-points li::before { color: var(--success); }

.learn-offering > a {
  align-self: flex-start;
  margin-top: 0.4rem;
}