/* ==========================================================================
   Per-surface styles. Cartograph design system applied across views.
   ========================================================================== */

/* ----- Home (Today's Review) ----- */
.home-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
.home-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-3);
}
.home-h1 {
  font-size: var(--fs-800);
  letter-spacing: -.022em;
  margin: 6px 0 18px;
  font-weight: 650;
  text-wrap: balance;
}
.home-tagline {
  color: var(--text-3);
  font-size: var(--fs-400);
  margin: 0 0 24px;
  max-width: 60ch;
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
@media (max-width: 720px) { .home-stats { grid-template-columns: 1fr; } }
.home-stat {
  padding: 18px 20px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.home-stat .num {
  font-size: var(--fs-700);
  font-weight: 650;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
}
.home-stat .label {
  font-size: var(--fs-200);
  color: var(--text-3);
  font-family: var(--font-mono);
  letter-spacing: .03em;
  text-transform: uppercase;
}
.home-stat .accent { color: var(--accent); }

.quest-card {
  position: relative;
  margin: 32px 0;
  padding: 24px 28px;
  background: linear-gradient(180deg, var(--surface-1), var(--surface-2));
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.quest-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 200px; height: 200px;
  background: radial-gradient(circle at top right, var(--accent-faint), transparent 70%);
  pointer-events: none;
}
.quest-card .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
}
.quest-card h2 {
  font-size: var(--fs-600);
  margin: 6px 0 10px;
  letter-spacing: -.014em;
}
.quest-card p { color: var(--text-2); margin-bottom: 18px; }

.home-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  margin-top: 16px;
}
@media (max-width: 960px) { .home-grid { grid-template-columns: 1fr; } }

/* ----- Modules index ----- */
.module-strip {
  display: grid;
  grid-template-columns: 80px 1fr 80px;
  gap: 20px;
  align-items: center;
  padding: 18px 24px;
  border: 1px solid var(--border-1);
  border-left: 3px solid var(--module-hue, var(--text-4));
  background: var(--surface-1);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast);
  margin-bottom: 8px;
}
.module-strip:hover {
  background: var(--surface-2);
  border-color: var(--border-3);
  border-left-color: var(--module-hue);
  transform: translateX(2px);
  text-decoration: none;
}
.module-strip-num {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: .04em;
  color: var(--text-3);
  text-transform: uppercase;
  font-weight: 600;
}
.module-strip-body {
  min-width: 0;
}
.module-strip-title {
  font-size: var(--fs-400);
  font-weight: 650;
  letter-spacing: -.012em;
  margin: 0 0 4px;
  color: var(--text-1);
}
.module-strip-tagline {
  font-size: var(--fs-200);
  color: var(--text-3);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.module-strip-progress {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  text-align: right;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}
.module-strip-progress strong {
  color: var(--text-1);
  font-weight: 600;
}

/* ----- Module page ----- */
.module-cluster-list {
  margin-top: 24px;
}
.module-cluster-list h2 {
  font-size: var(--fs-300);
  margin: 24px 0 8px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-3);
}
.concept-row {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  background: var(--surface-1);
  text-decoration: none;
  color: inherit;
  margin-bottom: 4px;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.concept-row:hover {
  background: var(--surface-2);
  border-color: var(--border-3);
  text-decoration: none;
}
.concept-row .tick {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--border-3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: transparent;
}
.concept-row.is-complete .tick {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--surface-0);
}
.concept-row .name {
  font-weight: 600;
  color: var(--text-1);
  margin: 0 0 2px;
}
.concept-row .stub {
  color: var(--text-3);
  font-size: var(--fs-200);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ----- Concept page ----- */
.concept-aliases {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  color: var(--text-3);
  margin: -4px 0 16px;
}
.concept-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.concept-section {
  margin: 28px 0;
}
.concept-section h2 {
  font-size: var(--fs-500);
  margin: 0 0 12px;
  letter-spacing: -.012em;
}
.placeholder {
  color: var(--text-4);
  font-style: italic;
}
.placeholder::before { content: '['; }
.placeholder::after { content: ']'; }

.concept-toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  padding: 16px 0;
  border-top: 1px solid var(--border-1);
  border-bottom: 1px solid var(--border-1);
  margin: 32px 0;
}
.concept-toolbar label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: var(--fs-200);
  color: var(--text-2);
}
.save-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--border-2);
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--text-2);
  font-size: var(--fs-200);
}
.save-toggle:hover { background: var(--surface-2); border-color: var(--border-3); }
.save-toggle[aria-pressed="true"] {
  background: var(--accent-faint);
  color: var(--accent);
  border-color: var(--accent-faint);
}

.see-also-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.see-also-list a {
  display: inline-block;
  padding: 4px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border-1);
  border-radius: 999px;
  font-size: var(--fs-200);
  color: var(--text-2);
  text-decoration: none;
}
.see-also-list a:hover { border-color: var(--border-3); color: var(--text-1); text-decoration: none; }

.next-prev-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-1);
}
.next-prev-nav a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-1);
  background: var(--surface-1);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.next-prev-nav a:hover { background: var(--surface-2); border-color: var(--border-3); text-decoration: none; }
.next-prev-nav .label {
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.next-prev-nav .target {
  font-weight: 600;
  margin-top: 2px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.next-prev-nav .next { text-align: right; }

/* ----- Right rail context ----- */
.context-card {
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  padding: 16px;
}
.context-card h3 {
  font-size: var(--fs-200);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-3);
  margin: 0 0 12px;
}
.context-card ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.context-card li a {
  font-size: var(--fs-200);
  color: var(--text-2);
  text-decoration: none;
  display: block;
  padding: 4px 0;
}
.context-card li a:hover { color: var(--text-1); text-decoration: underline; text-underline-offset: 3px; }
.context-card .toc-active a { color: var(--text-1); font-weight: 600; }

/* ----- Glossary ----- */
.glossary-toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.glossary-toolbar input {
  flex: 1;
  min-width: 200px;
}
.letter-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-1);
}
.letter-strip a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  color: var(--text-3);
  text-decoration: none;
  transition: background var(--dur-fast);
}
.letter-strip a:hover { background: var(--surface-2); color: var(--text-1); text-decoration: none; }

.glossary-bucket { margin-bottom: 32px; }
.glossary-bucket-letter {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-3);
  text-transform: uppercase;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-1);
  margin: 0 0 8px;
}

/* ----- Toolkit landing ----- */
.toolkit-section { margin-top: 32px; }
.toolkit-section h2 {
  font-size: var(--fs-400);
  margin: 0 0 4px;
}
.toolkit-section .toolkit-tagline {
  color: var(--text-3);
  font-size: var(--fs-200);
  margin: 0 0 18px;
}
.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
@media (max-width: 720px) { .toolkit-grid { grid-template-columns: 1fr; } }
.toolkit-card {
  display: block;
  padding: 18px 20px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.toolkit-card:hover { background: var(--surface-2); border-color: var(--border-3); text-decoration: none; }
.toolkit-card-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}
.toolkit-card-title {
  font-size: var(--fs-300);
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0 0 4px;
  color: var(--text-1);
}
.toolkit-card-desc {
  font-size: var(--fs-200);
  color: var(--text-3);
  margin: 0;
}

/* ----- Editor pattern ----- */
.editor-block {
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  position: relative;
}
.editor-block.is-edited {
  border-left: 3px solid var(--accent);
}
.editor-edited-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.editor-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.editor-display {
  background: var(--surface-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 0 0 10px;
  white-space: pre-wrap;
  line-height: 1.55;
  font-family: var(--font-sans);
  font-size: var(--fs-200);
  color: var(--text-1);
}
.editor-display.editor-mono { font-family: var(--font-mono); font-size: .88rem; }
.editor-textarea {
  width: 100%;
  min-height: 240px;
  padding: 14px 16px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  background: var(--surface-0);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: .88rem;
  line-height: 1.55;
  resize: vertical;
  margin-bottom: 10px;
}
.editor-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.btn-link {
  background: transparent;
  border: 0;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font-size: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  text-decoration: underline;
}
.btn-link:hover { color: var(--accent-strong); }

/* ----- CLAUDE.md builder ----- */
.builder {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: flex-start;
}
@media (max-width: 980px) { .builder { grid-template-columns: 1fr; } }
.builder-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.builder-section {
  padding: 14px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
}
.builder-section h3 {
  margin: 0 0 4px;
  font-size: var(--fs-300);
  font-weight: 600;
}
.builder-section .prompt {
  color: var(--text-3);
  font-size: var(--fs-200);
  margin: 0 0 10px;
}
.builder-options {
  display: flex;
  flex-direction: column;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.builder-options label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border-1);
  border-radius: 6px;
  cursor: pointer;
  font-size: var(--fs-200);
  background: var(--surface-1);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.builder-options label:hover { border-color: var(--border-3); background: var(--surface-2); }
.builder-options input { margin-top: 3px; flex: 0 0 auto; }
.builder-options label:has(input:checked) { border-color: var(--accent); background: var(--accent-faint); }
.builder-custom {
  width: 100%;
  margin-top: 8px;
  min-height: 70px;
  padding: 8px 10px;
  border: 1px solid var(--border-1);
  border-radius: 6px;
  background: var(--surface-0);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: .85rem;
  resize: vertical;
}
.builder-output-pane {
  position: sticky;
  top: calc(var(--topstrip-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.builder-output {
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  max-height: 60vh;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: .85rem;
  white-space: pre-wrap;
  line-height: 1.6;
  color: var(--text-1);
}
.builder-output-actions { display: flex; gap: 8px; }

/* ----- Playbook ----- */
.playbook-card {
  display: block;
  padding: 18px 20px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  margin-bottom: 8px;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.playbook-card:hover { border-color: var(--border-3); background: var(--surface-2); text-decoration: none; }
.playbook-card .time {
  display: inline-block;
  padding: 2px 8px;
  background: var(--surface-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-3);
  border-radius: 999px;
  margin-bottom: 10px;
}
.playbook-card .title { font-size: var(--fs-400); font-weight: 650; margin: 0 0 6px; letter-spacing: -.012em; color: var(--text-1); }
.playbook-card .outcome { color: var(--text-3); font-size: var(--fs-200); margin: 0 0 8px; }
.playbook-card .meta { color: var(--text-4); font-family: var(--font-mono); font-size: 10px; letter-spacing: .04em; text-transform: uppercase; }

.playbook-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  padding: 14px 0;
  border-top: 1px solid var(--border-1);
  border-bottom: 1px solid var(--border-1);
  margin: 18px 0 32px;
  font-size: var(--fs-200);
}
.playbook-meta-row .label { color: var(--text-3); font-family: var(--font-mono); font-size: 10px; letter-spacing: .04em; text-transform: uppercase; }
.playbook-meta-row .value { color: var(--text-1); font-weight: 500; }

.step-block {
  position: relative;
  padding: 24px 28px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}
.step-block.is-complete { border-left: 3px solid var(--success); }
.step-block h2 { font-size: var(--fs-500); margin: 0 0 12px; }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--surface-3);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-200);
  margin-right: 8px;
  vertical-align: -.4em;
}
.step-block.is-complete .step-num { background: var(--success); color: var(--surface-0); }
.step-checkpoint {
  margin-top: 14px;
  padding: 10px 14px;
  border-left: 3px solid var(--success);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  font-size: var(--fs-200);
  color: var(--text-2);
}
.step-checkpoint::before { content: 'Checkpoint: '; font-weight: 700; color: var(--success); }
.common-failures-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.common-failures-list li {
  padding: 12px 16px;
  border-left: 3px solid var(--warn);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
}
.common-failures-list .issue { font-weight: 600; margin: 0 0 4px; }
.common-failures-list .fix { color: var(--text-3); font-size: var(--fs-200); margin: 0; }

/* ----- Decision tools ----- */
.decision-page {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: flex-start;
}
@media (max-width: 980px) { .decision-page { grid-template-columns: 1fr; } }
.decision-form { display: flex; flex-direction: column; gap: 12px; }
.decision-question {
  padding: 14px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
}
.decision-question h3 { font-size: var(--fs-300); margin: 0 0 4px; font-weight: 600; }
.decision-question .prompt { color: var(--text-3); font-size: var(--fs-200); margin: 0 0 10px; }

.decision-results-pane {
  position: sticky;
  top: calc(var(--topstrip-h) + 24px);
}
.decision-results { background: var(--surface-1); border: 1px solid var(--border-2); border-radius: var(--radius-md); padding: 18px 20px; }
.decision-rec {
  padding: 14px 16px;
  background: var(--surface-2);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  position: relative;
}
.decision-rec.is-top { background: var(--accent-faint); border: 1px solid var(--accent); }
.decision-rec .rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--surface-3);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  font-weight: 600;
  margin-right: 8px;
  vertical-align: -.3em;
}
.decision-rec.is-top .rank { background: var(--accent); color: var(--surface-0); }
.decision-rec .title { font-weight: 650; color: var(--text-1); }
.decision-rec .score { color: var(--text-3); font-size: var(--fs-200); margin-left: 6px; font-family: var(--font-mono); }
.decision-rec .rationale { color: var(--text-2); font-size: var(--fs-200); margin: 8px 0 0; }

/* ----- Personal Library ----- */
.lib-tabs { display: flex; gap: 4px; padding: 0 0 4px; border-bottom: 1px solid var(--border-1); margin-bottom: 18px; list-style: none; }
.lib-tab {
  padding: 8px 14px;
  border: 0;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  font-size: var(--fs-200);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.lib-tab:hover { color: var(--text-1); }
.lib-tab[aria-selected="true"] { color: var(--text-1); border-bottom-color: var(--accent); font-weight: 600; }
.lib-toolbar { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.lib-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.lib-entry {
  padding: 14px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
}
.lib-entry-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.lib-entry-title { font-weight: 600; color: var(--text-1); text-decoration: none; }
.lib-entry-meta { font-family: var(--font-mono); font-size: 10px; color: var(--text-3); letter-spacing: .04em; text-transform: uppercase; }
.lib-entry-preview { color: var(--text-3); font-size: var(--fs-200); margin: 8px 0 0; max-height: 4.5em; overflow: hidden; }

/* ----- Profile ----- */
.profile-hero {
  padding: 28px;
  background: linear-gradient(135deg, var(--surface-1), var(--surface-2));
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}
.profile-tier-row { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.profile-tier-badge {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: var(--surface-0);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.profile-tier-meta { display: flex; flex-direction: column; gap: 4px; }
.profile-tier-name { font-size: var(--fs-600); font-weight: 650; letter-spacing: -.014em; }
.profile-tier-num { font-family: var(--font-mono); font-size: var(--fs-200); color: var(--text-3); }

.profile-xp-bar { margin-top: 18px; }
.profile-xp-bar .meta { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: var(--fs-200); color: var(--text-3); margin-bottom: 6px; }

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.achievement-tile {
  padding: 14px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  display: flex;
  gap: 10px;
}
.achievement-tile.is-unlocked { border-color: var(--accent-faint); }
.achievement-tile.is-locked .name,
.achievement-tile.is-locked .desc,
.achievement-tile.is-locked .meta { color: var(--text-3); }
.achievement-tile .ico {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--surface-3);
  color: var(--text-3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 12px;
  flex: 0 0 auto;
}
.achievement-tile.is-unlocked .ico { background: var(--accent); color: var(--surface-0); }
.achievement-tile .name { font-weight: 600; color: var(--text-1); margin: 0; }
.achievement-tile .desc { color: var(--text-3); font-size: var(--fs-200); margin: 2px 0 4px; }
.achievement-tile .meta { color: var(--text-4); font-family: var(--font-mono); font-size: 10px; letter-spacing: .04em; text-transform: uppercase; }

.settings-section { margin-top: 32px; padding: 18px 20px; background: var(--surface-1); border: 1px solid var(--border-1); border-radius: var(--radius-md); }
.settings-row { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-top: 1px solid var(--border-1); }
.settings-row:first-of-type { border-top: 0; padding-top: 0; }
.settings-row .label { color: var(--text-1); font-weight: 600; }
.settings-row .desc { color: var(--text-3); font-size: var(--fs-200); margin-top: 2px; }

/* ----- Capstone ----- */
.capstone-progress {
  display: flex;
  gap: 4px;
  margin: 18px 0 24px;
}
.capstone-progress .dot {
  flex: 1;
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
}
.capstone-progress .dot.is-active { background: var(--accent); }
.capstone-progress .dot.is-correct { background: var(--success); }
.capstone-progress .dot.is-wrong { background: var(--danger); }

.capstone-step {
  padding: 28px;
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
}
.capstone-step .num {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: .04em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.capstone-step h2 { font-size: var(--fs-500); margin: 0 0 18px; }

.capstone-foot {
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  align-items: center;
}

.capstone-result {
  margin-top: 18px;
  padding: 18px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-2);
}
.capstone-result.is-pass { border-color: var(--accent); background: var(--accent-faint); }
.capstone-result.is-fail { border-color: var(--warn); }

.capstone-step-feedback {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-200);
  background: var(--surface-2);
  border-left: 3px solid var(--border-3);
}
.capstone-step-feedback.is-correct { border-left-color: var(--success); }
.capstone-step-feedback.is-wrong { border-left-color: var(--danger); }

/* ----- Flashcard ----- */
.flashcard {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 24px 28px;
  margin-top: 8px;
  background: linear-gradient(135deg, color-mix(in oklch, var(--accent) 10%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  cursor: pointer;
  text-align: center;
  font-size: var(--fs-300);
  line-height: 1.5;
  color: var(--text-1);
  transition: transform 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}
.flashcard:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px color-mix(in oklch, var(--accent) 18%, transparent);
}
.flashcard:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 28%, transparent);
}
.flashcard-face {
  width: 100%;
}
.flashcard-front {
  font-weight: 500;
}
.flashcard-back {
  color: var(--text-2);
}

/* ----- Quiz ----- */
.quiz-card {
  margin-top: 8px;
  padding: 20px 24px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
}
.quiz-prompt {
  margin: 0 0 14px;
  font-size: var(--fs-300);
  font-weight: 500;
  color: var(--text-1);
}
.quiz-options {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.quiz-options li { margin: 0; }
.quiz-option {
  width: 100%;
  text-align: left;
  justify-content: flex-start;
  white-space: normal;
  padding: 10px 14px;
  font-size: var(--fs-200);
  line-height: 1.5;
}
.quiz-option:hover { border-color: var(--accent); }
.quiz-feedback {
  margin: 0 0 14px;
  padding: 12px 16px;
  background: var(--surface-2);
  border-left: 3px solid var(--border-3);
  border-radius: var(--radius-2);
  font-size: var(--fs-200);
  line-height: 1.5;
  color: var(--text-2);
}
.quiz-feedback.is-correct { border-left-color: var(--success); }
.quiz-feedback.is-wrong { border-left-color: var(--danger); }
.quiz-result {
  margin: 0 0 12px;
  font-size: var(--fs-300);
  font-weight: 500;
  color: var(--text-1);
}

/* ----- Settings v3: tabs ----- */
.settings-tablist {
  display: flex;
  gap: 4px;
  margin: 16px 0 24px;
  padding: 4px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  overflow-x: auto;
  scrollbar-width: none;
}
.settings-tablist::-webkit-scrollbar { display: none; }
.settings-tab {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--text-2);
  font: inherit;
  font-size: var(--fs-200);
  padding: 8px 14px;
  border-radius: var(--radius-2);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 120ms ease, color 120ms ease;
}
.settings-tab:hover { color: var(--text-1); background: var(--surface-2); }
.settings-tab:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 28%, transparent);
}
.settings-tab.is-active {
  background: var(--surface-3);
  color: var(--text-1);
  font-weight: 500;
}
.settings-panel { display: none; }
.settings-panel.is-active { display: block; }
.settings-panel section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.settings-blurb {
  margin: 0 0 16px;
  font-size: var(--fs-200);
  line-height: 1.6;
  color: var(--text-3);
}
.settings-input {
  appearance: none;
  background: var(--surface-1);
  color: var(--text-1);
  font: inherit;
  font-size: var(--fs-200);
  padding: 8px 12px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  min-width: 220px;
}
.settings-input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 28%, transparent);
}
.settings-key-ctrls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Settings rows existed already in legacy; ensure new defaults if missing */
.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-2);
}
.settings-row:last-child { border-bottom: none; }
.settings-row .label {
  font-size: var(--fs-200);
  font-weight: 500;
  color: var(--text-1);
}
.settings-row .desc {
  font-size: var(--fs-100);
  color: var(--text-3);
  margin-top: 2px;
  max-width: 56ch;
}

@media (max-width: 640px) {
  .settings-row { flex-direction: column; align-items: stretch; gap: 8px; }
}

/* ----- Heatmap (365-day activity grid) ----- */
.heatmap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  overflow-x: auto;
}
.heatmap-months {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 12px;
  gap: 2px;
  font-size: 10px;
  color: var(--text-3);
  line-height: 1;
  margin-left: 28px;
}
.heatmap-month { white-space: nowrap; }
.heatmap-body {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 4px;
}
.heatmap-dows {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  gap: 2px;
  font-size: 10px;
  color: var(--text-3);
  line-height: 1;
}
.heatmap-grid {
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(7, 12px);
  grid-auto-columns: 12px;
  gap: 2px;
}
.heatmap-cell {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--surface-2);
  cursor: default;
  transition: transform 80ms ease;
}
.heatmap-cell:hover { transform: scale(1.4); outline: 1px solid var(--border-3); z-index: 1; }
.heatmap-lp { visibility: hidden; }
.heatmap-l0 { background: color-mix(in oklch, var(--accent) 4%, var(--surface-2)); }
.heatmap-l1 { background: color-mix(in oklch, var(--accent) 18%, var(--surface-2)); }
.heatmap-l2 { background: color-mix(in oklch, var(--accent) 38%, var(--surface-2)); }
.heatmap-l3 { background: color-mix(in oklch, var(--accent) 60%, var(--surface-2)); }
.heatmap-l4 { background: var(--accent); }
.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  font-size: 10px;
  color: var(--text-3);
}
.heatmap-legend-label { padding: 0 4px; }

/* ----- Path (skill tree) ----- */
.path-modules {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 16px;
}
.path-module {
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  padding: 16px;
}
.path-module-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.path-module-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--module-hue, var(--accent));
  flex: 0 0 auto;
}
.path-module-title {
  font-size: var(--fs-300);
  font-weight: 500;
  color: var(--text-1);
  margin: 0;
}
.path-module-meta {
  font-size: var(--fs-100);
  color: var(--text-3);
  margin-left: auto;
}
.path-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.path-node {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  font-size: var(--fs-100);
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  color: var(--text-2);
  text-decoration: none;
  transition: border-color 120ms ease, transform 120ms ease;
  min-height: 32px;
}
.path-node:hover { border-color: var(--accent); color: var(--text-1); transform: translateY(-1px); }
.path-node.is-locked { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.path-node.is-completed {
  background: color-mix(in oklch, var(--accent) 12%, var(--surface-2));
  border-color: color-mix(in oklch, var(--accent) 30%, var(--border-2));
  color: var(--text-1);
}
.path-node.is-mastered {
  background: var(--module-hue, var(--accent));
  color: var(--surface-0);
  border-color: var(--module-hue, var(--accent));
}
.path-node-state { font-size: 10px; }
@media (min-width: 768px) {
  .path-modules { grid-template-columns: 1fr 1fr; }
}

/* ----- Onboarding ----- */
.onboarding {
  max-width: 560px;
  margin: 60px auto;
  padding: 32px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  text-align: center;
}
.onboarding-step-num {
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.onboarding h2 { margin: 0 0 16px; font-size: var(--fs-500); }
.onboarding p { margin: 0 0 24px; color: var(--text-2); }
.onboarding-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}
.onboarding-option {
  appearance: none;
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  padding: 14px 16px;
  font: inherit;
  font-size: var(--fs-200);
  color: var(--text-1);
  cursor: pointer;
  text-align: left;
  transition: border-color 120ms ease, transform 120ms ease, background-color 120ms ease;
}
.onboarding-option:hover { border-color: var(--accent); transform: translateY(-1px); }
.onboarding-option.is-selected {
  border-color: var(--accent);
  background: color-mix(in oklch, var(--accent) 8%, var(--surface-2));
}
.onboarding-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  justify-content: space-between;
}
.onboarding-skip {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--text-3);
  font: inherit;
  font-size: var(--fs-100);
  cursor: pointer;
  padding: 8px 12px;
}
.onboarding-skip:hover { color: var(--text-1); }
.onboarding-progress {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-bottom: 16px;
}
.onboarding-progress-dot {
  width: 24px;
  height: 4px;
  border-radius: 2px;
  background: var(--surface-3);
}
.onboarding-progress-dot.is-active { background: var(--accent); }

/* ----- Home v3 additions: Continue + Recommended next ----- */
.continue-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  margin: 16px 0;
  background: linear-gradient(135deg, color-mix(in oklch, var(--accent) 8%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border: 1px solid color-mix(in oklch, var(--accent) 24%, var(--border-2));
  border-radius: var(--radius-3);
}
.continue-hero .label {
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.continue-hero .target {
  font-size: var(--fs-300);
  font-weight: 500;
  color: var(--text-1);
}
.recommend-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 16px;
}
@media (min-width: 768px) {
  .recommend-grid { grid-template-columns: repeat(3, 1fr); }
}
.recommend-card {
  padding: 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 120ms ease, transform 120ms ease;
}
.recommend-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.recommend-card .eyebrow {
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.recommend-card .name { font-weight: 500; color: var(--text-1); }
.recommend-card .reason { font-size: var(--fs-100); color: var(--text-3); }

/* ----- Practice hub ----- */
.practice-section { margin: 28px 0; }
.practice-section h2 { font-size: var(--fs-400); margin: 0 0 12px; }
.practice-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 768px) { .practice-cards { grid-template-columns: repeat(3, 1fr); } }
.practice-card {
  padding: 18px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.practice-card.is-primary {
  background: linear-gradient(135deg, color-mix(in oklch, var(--accent) 12%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border-color: color-mix(in oklch, var(--accent) 30%, var(--border-2));
}
.practice-card-eyebrow {
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.practice-card-headline {
  font-size: var(--fs-300);
  font-weight: 500;
  color: var(--text-1);
}
.practice-card-desc {
  font-size: var(--fs-100);
  color: var(--text-3);
  line-height: 1.6;
  margin: 0 0 8px;
  flex: 1;
}
.practice-card .btn { align-self: flex-start; }

.practice-modules {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.practice-module-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
}
.practice-module-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--module-hue, var(--accent));
  flex: 0 0 auto;
}
.practice-module-meta { flex: 1; min-width: 0; }
.practice-module-title {
  font-size: var(--fs-200);
  margin: 0;
  font-weight: 500;
  color: var(--text-1);
}
.practice-module-stats { font-size: var(--fs-100); color: var(--text-3); margin: 2px 0 0; }
.practice-module-actions { display: flex; gap: 6px; }

/* ----- SRS review surface ----- */
.srs-stage {
  max-width: 600px;
  margin: 24px auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}
.srs-progress {
  font-size: var(--fs-100);
  color: var(--text-3);
  text-align: center;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.srs-card {
  padding: 36px 28px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, color-mix(in oklch, var(--accent) 10%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  cursor: pointer;
  text-align: center;
  font-size: var(--fs-400);
  line-height: 1.4;
  color: var(--text-1);
}
.srs-card:hover { border-color: var(--accent); }
.srs-card:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 28%, transparent);
}
.srs-front { font-weight: 500; }
.srs-back {
  font-size: var(--fs-300);
  color: var(--text-2);
  line-height: 1.5;
  border-top: 1px solid var(--border-2);
  padding-top: 16px;
  width: 100%;
}
.srs-rate {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 8px;
}
.srs-rate-btn {
  min-height: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px;
  font-weight: 500;
  border-width: 1px;
  border-style: solid;
}
.srs-rate-btn.is-again {
  border-color: color-mix(in oklch, var(--danger) 50%, var(--border-2));
  color: var(--danger);
}
.srs-rate-btn.is-again:hover {
  background: color-mix(in oklch, var(--danger) 18%, var(--surface-1));
  color: var(--text-1);
}
.srs-rate-btn.is-hard {
  border-color: color-mix(in oklch, var(--warn) 50%, var(--border-2));
  color: var(--warn);
}
.srs-rate-btn.is-hard:hover {
  background: color-mix(in oklch, var(--warn) 18%, var(--surface-1));
  color: var(--text-1);
}
.srs-rate-btn.is-good {
  border-color: color-mix(in oklch, var(--accent) 50%, var(--border-2));
  color: var(--accent);
}
.srs-rate-btn.is-good:hover {
  background: color-mix(in oklch, var(--accent) 18%, var(--surface-1));
  color: var(--text-1);
}
.srs-rate-btn.is-easy {
  border-color: color-mix(in oklch, var(--success) 50%, var(--border-2));
  color: var(--success);
}
.srs-rate-btn.is-easy:hover {
  background: color-mix(in oklch, var(--success) 18%, var(--surface-1));
  color: var(--text-1);
}

/* ----- Utilities (toolkit) ----- */
.utility-section {
  margin-top: 16px;
}
.utility-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 16px;
}
.utility-form-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 12px;
  align-items: center;
}
.utility-form-row label {
  font-size: var(--fs-200);
  color: var(--text-2);
  font-weight: 500;
}
@media (max-width: 640px) {
  .utility-form-row { grid-template-columns: 1fr; }
}

/* Token counter cards */
.utility-counts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.utility-count-card {
  padding: 14px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.utility-count-card.is-active {
  border-color: var(--accent);
  background: color-mix(in oklch, var(--accent) 8%, var(--surface-1));
}

/* Token visualizer board */
.token-board {
  padding: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  line-height: 1.8;
  word-break: break-word;
}
.token-pill {
  display: inline;
  padding: 1px 4px;
  margin: 1px;
  border-radius: 3px;
  white-space: pre;
}
.token-word { background: color-mix(in oklch, var(--accent) 14%, transparent); color: var(--text-1); }
.token-num { background: color-mix(in oklch, var(--success) 14%, transparent); color: var(--success); }
.token-punct { background: color-mix(in oklch, var(--warn) 14%, transparent); color: var(--warn); }
.token-ws { background: var(--surface-3); color: var(--text-4); }

/* Score donut */
.utility-score-ring {
  --ring-pct: 0%;
  width: 96px;
  height: 96px;
  border-radius: 999px;
  background: conic-gradient(var(--accent) var(--ring-pct), var(--surface-3) 0);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex: 0 0 auto;
}
.utility-score-ring::before {
  content: '';
  position: absolute;
  inset: 8px;
  background: var(--surface-1);
  border-radius: 999px;
}
.utility-score-num {
  position: relative;
  font-size: var(--fs-500);
  font-weight: 700;
  color: var(--accent);
}

/* Rubric rows */
.utility-rubric-row {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 12px;
  align-items: start;
  padding: 10px 12px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
}
.utility-rubric-icon {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--fs-100);
}
.utility-rubric-row.is-pass { border-color: color-mix(in oklch, var(--success) 30%, var(--border-2)); }
.utility-rubric-row.is-pass .utility-rubric-icon { background: color-mix(in oklch, var(--success) 28%, transparent); color: var(--success); }
.utility-rubric-row.is-fail { border-color: color-mix(in oklch, var(--warn) 30%, var(--border-2)); }
.utility-rubric-row.is-fail .utility-rubric-icon { background: color-mix(in oklch, var(--warn) 28%, transparent); color: var(--warn); }

/* Latency budget stacked bar */
.utility-budget-bar {
  display: flex;
  height: 56px;
  margin-top: 16px;
  border-radius: var(--radius-2);
  overflow: hidden;
  border: 1px solid var(--border-2);
}
.utility-budget-slice {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--surface-0);
  text-align: center;
  font-size: var(--fs-100);
  font-weight: 500;
  padding: 4px;
  min-width: 0;
  overflow: hidden;
}
.utility-budget-label { font-size: 10px; opacity: 0.85; }
.utility-budget-value { font-size: var(--fs-100); font-weight: 600; }

/* ----- AI badge (small pill on features when key is connected) ----- */
.ai-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--accent);
  color: var(--surface-0);
  vertical-align: middle;
}

/* ----- Chat sidebar (per-concept AI panel) ----- */
.chat-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in oklch, var(--surface-0) 60%, transparent);
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.chat-sidebar-overlay.is-open { opacity: 1; pointer-events: auto; }
.chat-sidebar {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(420px, 92vw);
  background: var(--surface-1);
  border-left: 1px solid var(--border-2);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 240ms ease;
  box-shadow: -16px 0 48px rgba(0, 0, 0, 0.3);
}
.chat-sidebar-overlay.is-open .chat-sidebar { transform: translateX(0); }
.chat-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-2);
  flex: 0 0 auto;
}
.chat-sidebar-head .icon-btn {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  color: var(--text-2);
  cursor: pointer;
  font-size: 18px;
}
.chat-sidebar-head .icon-btn:hover { color: var(--text-1); border-color: var(--accent); }
.chat-sidebar-tablist {
  display: flex;
  gap: 4px;
  padding: 12px 16px 0;
  flex: 0 0 auto;
}
.chat-sidebar-tab {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--text-3);
  font: inherit;
  font-size: var(--fs-200);
  padding: 8px 12px;
  border-radius: var(--radius-2);
  cursor: pointer;
}
.chat-sidebar-tab:hover { color: var(--text-1); background: var(--surface-2); }
.chat-sidebar-tab.is-active { background: var(--surface-3); color: var(--text-1); font-weight: 500; }
.chat-sidebar-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chat-sidebar-foot {
  flex: 0 0 auto;
  padding: 10px 16px;
  font-size: var(--fs-100);
  color: var(--text-3);
  border-top: 1px solid var(--border-2);
}
.chat-tab {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}
.chat-empty {
  font-size: var(--fs-200);
  color: var(--text-3);
  margin: 0;
}
.chat-thread {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-height: 100px;
  overflow-y: auto;
}
.chat-msg {
  padding: 10px 12px;
  border-radius: var(--radius-2);
  font-size: var(--fs-200);
  line-height: 1.5;
}
.chat-msg-user {
  background: color-mix(in oklch, var(--accent) 12%, var(--surface-2));
  align-self: flex-end;
  max-width: 90%;
}
.chat-msg-assistant {
  background: var(--surface-2);
  align-self: flex-start;
  max-width: 95%;
}
.chat-msg-role {
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.chat-msg-body {
  white-space: pre-wrap;
  color: var(--text-1);
}
.chat-input {
  appearance: none;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  font: inherit;
  font-size: var(--fs-200);
  padding: 10px 12px;
  color: var(--text-1);
  resize: vertical;
  width: 100%;
  min-height: 60px;
}
.chat-input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 28%, transparent);
}
.chat-compose {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.chat-compose-actions {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

/* ----- Reading mode (full-screen, distraction-free) ----- */
.reading-overlay {
  position: fixed;
  inset: 0;
  background: var(--surface-0);
  z-index: 70;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}
.reading-overlay.is-open { opacity: 1; pointer-events: auto; }
.reading-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 28px 80px;
  font-size: 1.08rem;
  line-height: 1.8;
}
.reading-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: color-mix(in oklch, var(--surface-0) 92%, transparent);
  backdrop-filter: blur(10px);
  padding: 12px 0;
  margin: -32px -28px 24px;
  padding-left: 28px;
  padding-right: 28px;
  border-bottom: 1px solid var(--border-2);
}
.reading-title {
  font-size: clamp(2rem, 1.5rem + 1.4vw, 2.6rem);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}
.reading-aliases {
  color: var(--text-3);
  font-size: var(--fs-200);
  margin: 0 0 12px;
}
.reading-stub {
  color: var(--text-2);
  font-size: 1.1rem;
  font-style: italic;
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  margin: 0 0 32px;
}
.reading-section {
  margin: 32px 0;
}
.reading-section h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-2);
}
.reading-section p { margin: 0 0 14px; color: var(--text-1); }
.reading-section pre {
  background: var(--surface-2);
  padding: 16px;
  border-radius: var(--radius-2);
  overflow-x: auto;
  font-size: 0.95rem;
  line-height: 1.5;
}
.reading-foot {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border-2);
}

/* ----- Module quiz (cumulative, daily-shuffled) ----- */
.mq-stage {
  max-width: 720px;
  margin: 24px auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.mq-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-100);
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.mq-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
  overflow: hidden;
}
.mq-progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 220ms ease;
}
.mq-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mq-option {
  appearance: none;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  padding: 14px 16px;
  font: inherit;
  font-size: var(--fs-200);
  color: var(--text-1);
  text-align: left;
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease, transform 120ms ease;
}
.mq-option:hover { border-color: var(--accent); transform: translateY(-1px); }
.mq-option:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 28%, transparent);
}
.mq-feedback {
  padding: 16px;
  border: 1px solid var(--border-2);
  border-left-width: 4px;
  border-radius: var(--radius-2);
  background: var(--surface-1);
}
.mq-feedback.is-correct { border-left-color: var(--success); }
.mq-feedback.is-wrong { border-left-color: var(--danger); }
.mq-result-banner {
  text-align: center;
  padding: 32px 24px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  background: var(--surface-1);
}
.mq-result-banner.is-pass {
  background: linear-gradient(135deg, color-mix(in oklch, var(--success) 12%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border-color: color-mix(in oklch, var(--success) 30%, var(--border-2));
}
.mq-result-banner.is-fail {
  background: linear-gradient(135deg, color-mix(in oklch, var(--warn) 12%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border-color: color-mix(in oklch, var(--warn) 30%, var(--border-2));
}
.mq-review {
  padding: 12px 14px;
  border: 1px solid var(--border-2);
  border-left-width: 3px;
  border-radius: var(--radius-2);
  background: var(--surface-1);
}
.mq-review.is-correct { border-left-color: var(--success); }
.mq-review.is-wrong { border-left-color: var(--danger); }

/* ----- Topics (tag cloud) ----- */
.topics-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  padding: 24px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  align-items: baseline;
  line-height: 1.4;
}
.topic-tile {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  text-decoration: none;
  color: var(--topic-hue, var(--accent));
  font-weight: 500;
  letter-spacing: -0.01em;
  padding: 4px 10px;
  border-radius: var(--radius-2);
  border: 1px solid transparent;
  transition: border-color 120ms ease, transform 120ms ease, background-color 120ms ease;
}
.topic-tile:hover {
  border-color: var(--topic-hue, var(--accent));
  background: color-mix(in oklch, var(--topic-hue, var(--accent)) 8%, transparent);
  transform: translateY(-1px);
}
.topic-tile-label { font-weight: 500; }
.topic-tile-count { color: var(--text-3); font-size: 14px; font-weight: 400; }

/* ----- Within-reach achievement cards (profile) ----- */
.nearest-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 12px;
}
@media (min-width: 768px) {
  .nearest-grid { grid-template-columns: repeat(3, 1fr); }
}
.nearest-card {
  padding: 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-3);
  position: relative;
  overflow: hidden;
}
.nearest-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent);
  opacity: 0.5;
}
.nearest-name {
  font-weight: 500;
  font-size: var(--fs-300);
  color: var(--text-1);
}
.nearest-desc {
  font-size: var(--fs-100);
  color: var(--text-3);
  margin-top: 4px;
  line-height: 1.5;
}
.nearest-meta {
  margin-top: 6px;
  font-size: var(--fs-100);
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

/* ----- History page ----- */
.history-day {
  margin-top: 24px;
}
.history-day h2 {
  font-size: var(--fs-300);
  font-weight: 500;
  color: var(--text-2);
  margin: 0 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-2);
  letter-spacing: 0.02em;
}

/* ----- Annotation popover + highlight marks ----- */
.annotate-popover {
  position: absolute;
  display: none;
  gap: 4px;
  z-index: 50;
  background: var(--surface-1);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  padding: 4px;
  box-shadow: 0 12px 36px rgba(0,0,0,0.3);
}
mark.annotate-mark {
  background: color-mix(in oklch, oklch(80% 0.16 90) 60%, transparent);
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
  cursor: help;
}
[data-theme="light"] mark.annotate-mark {
  background: color-mix(in oklch, oklch(85% 0.14 90) 70%, transparent);
}

/* ----- Pyodide code playground ----- */
.play-ctrl {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin: -8px 0 8px;
}
.play-out {
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-2);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  max-height: 320px;
  overflow-y: auto;
  margin-bottom: 12px;
}
.play-line {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
}
.play-stdout { color: var(--text-1); }
.play-stderr { color: var(--danger); }
.play-result { color: var(--accent); font-style: italic; padding-top: 4px; border-top: 1px dashed var(--border-2); margin-top: 4px; }

/* ----- Boss-battle capstone reskin ----- */
.is-boss-mode .home-eyebrow {
  color: var(--danger);
  font-weight: 600;
  letter-spacing: 0.08em;
}
.boss-hp {
  margin: 16px 0;
  padding: 14px 16px;
  background: linear-gradient(135deg, color-mix(in oklch, var(--danger) 15%, var(--surface-1)) 0%, var(--surface-1) 100%);
  border: 1px solid color-mix(in oklch, var(--danger) 40%, var(--border-2));
  border-radius: var(--radius-2);
}
.boss-hp-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 6px;
}
.boss-hp-value { font-weight: 600; color: var(--danger); }
.boss-hp-bar {
  height: 12px;
  background: var(--surface-3);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}
.boss-hp-fill {
  height: 100%;
  background: linear-gradient(90deg, oklch(72% 0.18 15) 0%, oklch(78% 0.16 25) 50%, oklch(82% 0.14 50) 100%);
  transition: width 600ms cubic-bezier(.2, .8, .2, 1);
  box-shadow: 0 0 12px oklch(72% 0.18 15 / 0.4);
}
.boss-hp.is-defeated .boss-hp-fill {
  background: linear-gradient(90deg, var(--success) 0%, var(--accent) 100%);
}
.boss-hp.is-victorious .boss-hp-label::after {
  content: ' · DEFEAT';
  color: var(--danger);
  margin-left: 8px;
  letter-spacing: 0.08em;
}
@media (max-width: 640px) {
  .reading-inner { padding: 16px 16px 80px; font-size: 1rem; }
  .reading-head { margin: -16px -16px 16px; padding-left: 16px; padding-right: 16px; }
}