/**
 * Formation Reader — premium editorial LMS experience (SBD Life tier).
 */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;0,700;1,500&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&display=swap');
@import url('canon-f1-spine.css');

.lesson-skeleton {
  max-width: var(--reader-max);
  margin: 0 auto;
  padding: 24px 0;
}

.lesson-skeleton-line {
  height: 14px;
  border-radius: 6px;
  margin-bottom: 14px;
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.09) 50%, rgba(255,255,255,0.04) 100%);
  background-size: 200% 100%;
  animation: lesson-shimmer 1.2s ease-in-out infinite;
}

.lesson-skeleton-line--short { width: 62%; }
.lesson-skeleton-line--med { width: 88%; }

@keyframes lesson-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.lesson-body.is-loading {
  min-height: 40vh;
}

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;0,700;1,500&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&display=swap');

:root {
  --reader-bg: #050505;
  --reader-surface: #0f0f0f;
  --reader-elevated: #161616;
  --reader-gold: #c7a45b;
  --reader-gold-soft: rgba(199, 164, 91, 0.14);
  --reader-text: #f5efe3;
  --reader-muted: #a89f8c;
  --reader-line: rgba(255, 255, 255, 0.07);
  --reader-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --reader-body: 'Source Serif 4', Georgia, serif;
  --reader-sans: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --reader-max: 42rem;
  --reader-wide: 48rem;
}

/* ── Progress bar ── */
.formation-read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 200;
  background: linear-gradient(90deg, var(--reader-gold), #e8d4a8, var(--reader-gold));
  box-shadow: 0 0 12px rgba(199, 164, 91, 0.45);
  transition: width 0.1s ease-out;
}

body.formation-reader-active {
  background: var(--reader-bg);
  color: var(--reader-text);
  font-family: var(--reader-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  --chapter-ambient: rgba(199, 164, 91, 0.1);
  transition: --chapter-ambient 1.1s ease;
}

body.formation-reader-active::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(ellipse 120% 55% at 50% -5%, var(--chapter-ambient) 0%, transparent 68%);
  transition: background 1.1s ease, opacity 0.8s ease;
  opacity: 1;
}

body.formation-reader-active[data-chapter-mood="gold"] { --chapter-ambient: rgba(199, 164, 91, 0.14); }
body.formation-reader-active[data-chapter-mood="violet"] { --chapter-ambient: rgba(130, 100, 200, 0.12); }
body.formation-reader-active[data-chapter-mood="amber"] { --chapter-ambient: rgba(200, 140, 70, 0.11); }
body.formation-reader-active[data-chapter-mood="teal"] { --chapter-ambient: rgba(70, 170, 160, 0.1); }
body.formation-reader-active[data-chapter-mood="blue"] { --chapter-ambient: rgba(90, 130, 210, 0.12); }
body.formation-reader-active[data-chapter-mood="rose"] { --chapter-ambient: rgba(200, 120, 140, 0.1); }
body.formation-reader-active[data-chapter-mood="slate"] { --chapter-ambient: rgba(140, 150, 170, 0.08); }

body.formation-reader-active .lesson-topbar,
body.formation-reader-active .lesson-hero,
body.formation-reader-active .lesson-body,
body.formation-reader-active .formation-read-nav,
body.formation-reader-active .formation-chapter-indicator {
  position: relative;
  z-index: 1;
}

/* ── Top bar ── */
.formation-reader-active .lesson-topbar {
  position: sticky;
  top: 3px;
  z-index: 100;
  background: linear-gradient(180deg, rgba(5, 5, 5, 0.97) 0%, rgba(5, 5, 5, 0.88) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--reader-line);
  padding: 14px 76px 14px 20px;
}

.formation-reader-active .lesson-topbar-title {
  font-family: var(--reader-sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--reader-muted);
}

.formation-reader-active .lesson-back {
  color: var(--reader-gold);
  opacity: 0.9;
  transition: opacity 0.2s;
}

.formation-reader-active .lesson-back:hover {
  opacity: 1;
}

/* ── Cinematic hero ── */
.formation-hero {
  position: relative;
  overflow: hidden;
  padding: 0;
  border-bottom: none;
  min-height: auto;
}

.formation-hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(199, 164, 91, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(100, 130, 200, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #0a0a0a 0%, var(--reader-bg) 100%);
  pointer-events: none;
  transition: opacity 1s ease;
}

.formation-hero-inner {
  position: relative;
  max-width: var(--reader-wide);
  margin: 0 auto;
  padding: 36px 24px 32px;
}

.formation-kicker {
  font-family: var(--reader-sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--reader-gold);
  margin: 0 0 14px;
}

.formation-title {
  font-family: var(--reader-serif);
  font-size: clamp(2rem, 6.5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--reader-text);
  margin: 0 0 14px;
  max-width: 18ch;
}

.formation-dek {
  font-family: var(--reader-serif);
  font-size: clamp(1.15rem, 3.5vw, 1.45rem);
  font-weight: 500;
  font-style: italic;
  line-height: 1.45;
  color: var(--reader-muted);
  margin: 0 0 18px;
  max-width: 36ch;
}

.formation-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.formation-meta-chip {
  font-family: var(--reader-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--reader-muted);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--reader-line);
  background: rgba(255, 255, 255, 0.03);
}

.formation-meta-chip:first-child {
  color: var(--reader-gold);
  border-color: rgba(199, 164, 91, 0.35);
  background: var(--reader-gold-soft);
}

/* Week progress in hero */
.formation-week-progress {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--reader-line);
}

.formation-week-progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--reader-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--reader-muted);
  margin-bottom: 8px;
}

.formation-week-progress-bar {
  height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.formation-week-progress-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--reader-gold), #e0c989);
  transition: width 0.4s ease;
}

/* ── Article body ── */
.formation-reader-active .lesson-body {
  max-width: var(--reader-max);
  margin: 0 auto;
  padding: 36px 22px 120px;
}

.lesson-article {
  font-family: var(--reader-body);
  font-size: 1.125rem;
  line-height: 1.82;
  color: var(--reader-text);
  font-feature-settings: 'kern' 1, 'liga' 1;
}

/* Lead paragraph + drop cap */
.lesson-p--lead::first-letter {
  float: left;
  font-family: var(--reader-serif);
  font-size: 4.1em;
  line-height: 0.78;
  font-weight: 600;
  color: var(--reader-gold);
  margin: 0.06em 0.12em 0 0;
  padding-right: 2px;
}

.lesson-p {
  margin: 0 0 1.35em;
  font-size: 1.125rem;
  line-height: 1.82;
  color: var(--reader-text);
}

.lesson-p strong,
.lesson-article strong {
  color: #fff8eb;
  font-weight: 600;
}

.lesson-inline-code {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(199, 164, 91, 0.1);
  color: var(--reader-gold);
}

/* Section cards */
.section-card-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  margin: 3rem 0 1.75rem;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid rgba(199, 164, 91, 0.22);
  background: linear-gradient(135deg, rgba(199, 164, 91, 0.09) 0%, rgba(15, 15, 15, 0.95) 100%);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.section-card-text .lesson-h2 {
  margin: 0;
  padding: 0;
  border: none;
  font-family: var(--reader-serif);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--reader-text);
}

.section-icon {
  font-size: 1.25rem;
  color: var(--reader-gold);
  width: 32px;
  text-align: center;
}

.section-pill {
  font-family: var(--reader-sans);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--reader-gold);
  padding: 5px 11px;
  border-radius: 20px;
  border: 1px solid rgba(199, 164, 91, 0.4);
  background: rgba(199, 164, 91, 0.08);
}

.section-scripture {
  border-color: rgba(140, 170, 230, 0.28);
  background: linear-gradient(135deg, rgba(80, 110, 180, 0.1) 0%, rgba(15, 15, 15, 0.95) 100%);
}

.section-prayer {
  border-color: rgba(199, 164, 91, 0.15);
  background: linear-gradient(135deg, rgba(199, 164, 91, 0.04) 0%, rgba(8, 8, 8, 0.98) 100%);
}

.lesson-h2 {
  font-family: var(--reader-serif);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--reader-gold);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0;
  border: none;
}

.lesson-h3 {
  font-family: var(--reader-sans);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--reader-muted);
  margin: 2rem 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.lesson-h3--doctrine {
  color: var(--reader-gold);
}

/* Pull quotes */
.lesson-pull-quote {
  margin: 2.5rem 0;
  padding: 0 0 0 22px;
  border: none;
  border-left: 3px solid var(--reader-gold);
  background: none;
}

.lesson-pull-quote p {
  margin: 0;
  font-family: var(--reader-serif);
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.4;
  color: var(--reader-text);
}

.lesson-quote {
  border-left: 3px solid var(--reader-gold);
  margin: 1.75rem 0;
  padding: 14px 20px;
  background: var(--reader-gold-soft);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  color: var(--reader-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Doctrine callouts */
.doctrine-callout {
  margin: 2rem 0;
  padding: 22px 24px;
  border-radius: 14px;
  border: 1px solid rgba(199, 164, 91, 0.35);
  background: linear-gradient(160deg, rgba(199, 164, 91, 0.12) 0%, rgba(20, 18, 14, 0.9) 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.doctrine-callout .lesson-p {
  margin: 0;
  font-family: var(--reader-serif);
  font-size: 1.2rem;
  line-height: 1.65;
  color: #fff8eb;
}

.doctrine-diagram {
  margin: 2rem 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(199, 164, 91, 0.25);
  background: #0c0c0c;
}

.lesson-pre--diagram {
  margin: 0;
  padding: 22px 24px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--reader-gold);
  background: transparent;
  border: none;
  white-space: pre-wrap;
}

.lesson-pre {
  background: var(--reader-elevated);
  border: 1px solid var(--reader-line);
  border-radius: 12px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--reader-gold);
}

.lesson-ornament {
  display: flex;
  justify-content: center;
  margin: 2.5rem 0;
}

.lesson-ornament span {
  display: block;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--reader-gold), transparent);
}

.lesson-p--prayer {
  font-family: var(--reader-serif);
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.9;
  color: var(--reader-muted);
  padding-left: 8px;
}

/* Lists */
.lesson-ul,
.lesson-ol {
  margin: 0.5rem 0 1.75rem;
  padding-left: 1.4rem;
}

.lesson-ul li,
.lesson-ol li {
  margin-bottom: 0.65em;
  line-height: 1.75;
  padding-left: 0.35rem;
}

.lesson-ol li::marker {
  color: var(--reader-gold);
  font-weight: 600;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1.75rem 0 2.25rem;
  border-radius: 14px;
  border: 1px solid var(--reader-line);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.lesson-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.lesson-table th {
  text-align: left;
  padding: 14px 16px;
  background: rgba(199, 164, 91, 0.1);
  color: var(--reader-gold);
  font-family: var(--reader-sans);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(199, 164, 91, 0.2);
}

.lesson-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--reader-line);
  vertical-align: top;
  line-height: 1.6;
}

.lesson-table tr:last-child td {
  border-bottom: none;
}

.lesson-table tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

.lesson-table td strong {
  color: var(--reader-gold);
}

/* Scripture */
.scripture-block {
  margin: 2rem 0 2.5rem;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(165deg, rgba(28, 36, 58, 0.7) 0%, rgba(10, 12, 18, 0.95) 100%);
  border: 1px solid rgba(130, 165, 230, 0.28);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.scripture-ref {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 20px;
  font-family: var(--reader-sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #a8c4f0;
  background: rgba(80, 120, 200, 0.12);
  border-bottom: 1px solid rgba(130, 165, 230, 0.15);
}

.scripture-version {
  font-size: 0.6rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--reader-muted);
}

.scripture-text {
  margin: 0;
  padding: 24px 26px 28px;
  font-family: var(--reader-serif);
  font-size: 1.2rem;
  line-height: 1.88;
  color: #e8ecf8;
}

.scripture-verse sup {
  font-size: 0.6em;
  color: #7a9ad4;
  font-weight: 700;
}

.scripture-study-label {
  font-family: var(--reader-sans);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #a8c4f0 !important;
}

.scripture-commentary {
  font-size: 1rem;
  color: var(--reader-muted) !important;
  padding-left: 16px;
  border-left: 2px solid rgba(130, 165, 230, 0.3);
}

/* ── Parts index (premium cards) ── */
.parts-index--formation {
  max-width: var(--reader-wide);
  margin: 0 auto;
  padding: 8px 0 40px;
}

.formation-index-header {
  text-align: center;
  margin-bottom: 28px;
  padding: 0 8px;
}

.formation-index-header h2 {
  font-family: var(--reader-serif);
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--reader-text);
}

.formation-index-header p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--reader-muted);
  margin: 0;
  max-width: 36ch;
  margin-left: auto;
  margin-right: auto;
}

.formation-parts-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.formation-part-card {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--reader-line);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(15, 15, 15, 0.9) 100%);
  transition: border-color 0.25s, transform 0.2s, box-shadow 0.25s;
}

.formation-part-card:hover:not(.formation-part-card--locked) {
  border-color: rgba(199, 164, 91, 0.45);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

.formation-part-card--done {
  border-color: rgba(199, 164, 91, 0.3);
  background: linear-gradient(135deg, rgba(199, 164, 91, 0.06) 0%, rgba(15, 15, 15, 0.9) 100%);
}

.formation-part-card--locked {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

.formation-part-num {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--reader-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--reader-gold);
  background: var(--reader-gold-soft);
  border: 1px solid rgba(199, 164, 91, 0.25);
}

.formation-part-card--done .formation-part-num {
  background: rgba(199, 164, 91, 0.2);
  color: #fff8eb;
}

.formation-part-title {
  font-family: var(--reader-serif);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--reader-text);
  margin: 0 0 4px;
}

.formation-part-meta {
  font-family: var(--reader-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--reader-muted);
}

.formation-part-arrow {
  font-size: 1.1rem;
  color: var(--reader-gold);
  opacity: 0.7;
}

.formation-part-check {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--reader-gold);
  background: rgba(199, 164, 91, 0.15);
  border: 1px solid rgba(199, 164, 91, 0.35);
}

/* Part breadcrumb */
.formation-reader-active .part-breadcrumb {
  max-width: var(--reader-wide);
  margin: 0 auto;
  padding: 12px 24px;
  border-bottom: 1px solid var(--reader-line);
  background: rgba(5, 5, 5, 0.6);
}

/* Sticky read nav (part view) */
.formation-read-nav {
  position: fixed;
  bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 40px;
  background: rgba(12, 12, 12, 0.92);
  border: 1px solid rgba(199, 164, 91, 0.25);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  max-width: calc(100vw - 32px);
}

.formation-read-nav-btn {
  font-family: var(--reader-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--reader-muted);
  background: none;
  border: none;
  padding: 8px 14px;
  border-radius: 24px;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

.formation-read-nav-btn:hover {
  color: var(--reader-text);
  background: rgba(255, 255, 255, 0.06);
}

.formation-read-nav-btn--primary {
  color: #0a0a0a;
  background: var(--reader-gold);
}

.formation-read-nav-btn--primary:hover {
  background: #e0c989;
  color: #0a0a0a;
}

.formation-read-nav-dots {
  display: flex;
  gap: 5px;
  padding: 0 6px;
}

.formation-read-nav-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.formation-read-nav-dot--active {
  background: var(--reader-gold);
  box-shadow: 0 0 8px rgba(199, 164, 91, 0.6);
}

.formation-read-nav-dot--done {
  background: rgba(199, 164, 91, 0.5);
}

/* Complete section */
.formation-reader-active .part-complete-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--reader-line);
}

.formation-reader-active .btn-complete {
  font-family: var(--reader-sans);
  letter-spacing: 0.04em;
  border-radius: 12px;
  box-shadow: 0 8px 28px rgba(199, 164, 91, 0.3);
}

/* Loading */
.formation-reader-active .lesson-loading {
  font-family: var(--reader-serif);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--reader-muted);
  padding: 80px 24px;
}

@media (min-width: 768px) {
  .formation-hero-inner {
    padding: 48px 32px 40px;
  }

  .formation-reader-active .lesson-body {
    padding: 48px 32px 140px;
  }

  .lesson-article {
    font-size: 1.2rem;
  }

  .lesson-p--lead::first-letter {
    font-size: 4.5em;
  }

  .scripture-text {
    font-size: 1.28rem;
    padding: 28px 32px 32px;
  }

  .formation-parts-grid {
    gap: 14px;
  }
}

@media (max-width: 480px) {
  .section-card-head {
    grid-template-columns: auto 1fr;
  }

  .section-pill {
    grid-column: 2;
    justify-self: start;
    margin-top: 4px;
  }

  .formation-read-nav {
    padding: 8px 10px;
    gap: 6px;
  }

  .formation-read-nav-btn {
    padding: 8px 10px;
    font-size: 11px;
  }
}

/* ── Ambient chapter transitions ── */
.formation-chapter {
  position: relative;
  padding-bottom: 0.5rem;
}

.formation-chapter:not(.is-visible) .section-card-head {
  opacity: 0.55;
  transform: translateY(10px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.formation-chapter.is-visible .section-card-head {
  opacity: 1;
  transform: translateY(0);
}

.formation-chapter-indicator {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(74px + env(safe-area-inset-bottom, 0px));
  z-index: 95;
  font-family: var(--reader-sans);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--reader-gold);
  padding: 7px 16px;
  border-radius: 24px;
  border: 1px solid rgba(199, 164, 91, 0.32);
  background: rgba(5, 5, 5, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.formation-chapter-indicator.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.lesson-body.lesson-body--out {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.lesson-body.lesson-body--in {
  animation: lesson-part-in 0.38s ease forwards;
}

@keyframes lesson-part-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  body.formation-reader-active::before,
  .formation-hero-glow,
  .formation-chapter-indicator,
  .formation-chapter .section-card-head,
  .lesson-body.lesson-body--out,
  .lesson-body.lesson-body--in {
    transition: none !important;
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}