.wiki-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  padding: 24px 18px;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
}

.brand {
  display: block;
  margin-bottom: 14px;
  font-weight: 700;
  text-decoration: none;
}

.search-trigger,
[data-peek-close] {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
  font: inherit;
  cursor: pointer;
}

.nav-group {
  margin-top: 22px;
}

.nav-group h2 {
  margin: 0 0 8px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.nav-link {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  padding: 9px 10px;
  border-radius: var(--radius-card);
  text-decoration: none;
}

.nav-link:hover,
.nav-link.is-active {
  background: var(--color-surface-hover);
}

.nav-link span,
.eyebrow {
  color: var(--color-teal);
  font: 700 13px/1.4 var(--font-mono);
}

.nav-link strong {
  font-size: 14px;
  font-weight: 500;
}

.content {
  width: min(920px, calc(100vw - 360px));
  margin: 0 auto;
  padding: 56px 32px 96px;
}

.content h1 {
  margin: 0 0 20px;
  font-size: 34px;
  line-height: 1.25;
  letter-spacing: 0;
}

.content h2 {
  margin: 36px 0 12px;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: 0;
}

.lead-block,
.definition {
  font-size: 20px;
  line-height: 1.65;
  color: var(--color-text-primary);
}

.concept-link {
  color: var(--color-teal);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.module-badge,
.concept-chip,
.needs-work {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
}

.needs-work {
  width: fit-content;
  border-color: #fecdd3;
  background: var(--color-coral-bg);
  color: var(--color-coral);
}

.refs,
.backlinks {
  padding-left: 20px;
}

.refs li {
  margin-bottom: 14px;
}

.refs span,
.empty-note {
  display: block;
  color: var(--color-text-muted);
  font-size: 13px;
}

.svg-slot {
  display: grid;
  place-items: center;
  margin: 28px 0;
  padding: 28px;
  border: 1px dashed var(--color-border-hover);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.concept-diagram {
  margin: 28px 0;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  text-align: center;
}

.concept-diagram svg {
  width: 100%;
  max-width: 460px;
  height: auto;
}

.concept-diagram figcaption {
  margin-top: 12px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.index-group {
  margin-top: 36px;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.module-card {
  min-height: 168px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  text-decoration: none;
}

.module-card span {
  color: var(--color-teal);
  font-family: var(--font-mono);
  font-weight: 700;
}

.module-card strong {
  display: block;
  margin: 8px 0;
  font-size: 17px;
}

.module-card p {
  margin: 0;
  color: var(--color-text-body);
}

.peek-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  justify-items: end;
  background: rgb(28 25 23 / 26%);
}

.peek-backdrop[hidden],
.command-palette[hidden] {
  display: none;
}

.peek-panel {
  width: min(720px, 100vw);
  height: 100vh;
  overflow: auto;
  padding: 24px;
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
}

.peek-panel header {
  display: grid;
  grid-template-columns: 1fr 96px;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}

.peek-panel .content {
  width: auto;
  padding: 0;
}

.command-palette {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: start center;
  padding-top: 12vh;
  background: rgb(28 25 23 / 28%);
}

.palette-box {
  width: min(640px, calc(100vw - 32px));
  max-height: 70vh;
  overflow: auto;
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
}

[data-search-input] {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 0;
  border-bottom: 1px solid var(--color-border);
  font: inherit;
}

.search-result {
  display: block;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
}

.search-result span {
  display: block;
  color: var(--color-text-muted);
  font-size: 13px;
}

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

  .sidebar {
    position: static;
    height: auto;
    max-height: 50vh;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .content {
    width: 100%;
    padding: 32px 18px 72px;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }
}

/* 교안(슬라이드) CTA — 모듈 페이지, DECKS_BASE_URL 설정 시에만 노출 */
.deck-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0 8px;
  padding: 11px 18px;
  border-radius: var(--radius-btn);
  background: var(--color-teal);
  color: var(--color-surface);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s ease;
}
.deck-cta:hover {
  background: #0b5d56;
}
.deck-cta-hint {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgb(255 255 255 / 22%);
  font: 600 11px/1.4 var(--font-mono);
}