/* ═══════════════════════════════════════════════════════════
   SOLO-MILLIONÄR BUCH — Warm Editorial Luxury
   Fonts: DM Serif Display (Headlines) + DM Sans (Body)
   Palette: Cream / Amber / Warm Charcoal
   ═══════════════════════════════════════════════════════════ */

@font-face {
  font-family: 'DM Sans Book';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/dm-sans-book-400.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans Book';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/dm-sans-book-500.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans Book';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/dm-sans-book-600.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans Book';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/dm-sans-book-700.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Serif Display Book';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/dm-serif-display-book-400.woff2') format('woff2');
}

:root {
  /* Brand palette */
  --cream: #FFFFFF;
  --cream-dark: #F3F3F3;
  --amber: #FF0055;
  --amber-light: #CC0044;
  --amber-glow: rgba(255, 0, 85, 0.12);
  --amber-subtle: rgba(255, 0, 85, 0.08);
  --charcoal: #000000;
  --warm-gray: #333333;
  --warm-gray-light: #666666;
  --border: #E5E5E5;
  --border-strong: #CFCFCF;
  --surface: #FFFFFF;
  --surface-glass: #FFFFFF;
  --cta-bg: #FF0055;
  --cta-hover: #CC0044;
  --cta-text: #FFFFFF;
  --cta-shadow: rgba(255, 0, 85, 0.22);

  /* Typography */
  --font-display: 'DM Serif Display Book', var(--brand-font-heading, 'DM Serif Display', Georgia, serif);
  --font-body: 'DM Sans Book', var(--brand-font-body, 'DM Sans', 'Helvetica Neue', sans-serif);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --sidebar-width: 272px;
  --header-height: 64px;
  --content-max-width: 700px;
  --media-max-width: 860px;
  --progress-height: 3px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 450ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ─── Reset & Base ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 32px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--charcoal);
  background: var(--cream);
  overflow-x: hidden;
}

/* ─── Reading Progress Bar ─── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--progress-height);
  z-index: 200;
  background: var(--border);
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--amber);
  transition: width 120ms ease-out;
  will-change: width;
}

/* ─── Header ─── */
.header {
  position: fixed;
  top: var(--progress-height);
  left: var(--sidebar-width);
  right: 0;
  height: var(--header-height);
  background: var(--surface-glass);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--charcoal);
}

.logo-icon {
  font-size: 1.375rem;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* Chapter Progress Indicator in Header */
.chapter-progress-text {
  font-size: 0.8125rem;
  color: var(--warm-gray);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Header CTA */
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--cta-bg);
  color: var(--cta-text);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  box-shadow: none;
  transition: none;
}

.header-cta:hover {
  background: var(--cta-hover);
  color: var(--cta-text);
  transform: none;
  box-shadow: none;
}

.header-cta-arrow {
  transition: none;
}

.header-cta:hover .header-cta-arrow {
  transform: none;
}

/* ─── Mobile Menu Toggle ─── */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--charcoal);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── Book Layout ─── */
.book-layout {
  display: flex;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + var(--progress-height));
}

/* ─── Sidebar ─── */
.sidebar {
  position: fixed;
  top: var(--progress-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--transition-base);
  z-index: 50;
}

/* Scrollbar Styling */
.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

.chapter-nav {
  padding: calc(1.25rem + var(--header-height)) 0.75rem 2.5rem;
}

.sidebar-top-action {
  margin-bottom: 1rem;
}

.nav-title {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--warm-gray-light);
  margin-bottom: 0.875rem;
  padding-left: 0;
}

.chapter-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chapter-item {
  border-radius: 10px;
  transition: all var(--transition-fast);
  position: relative;
}

.chapter-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--amber);
  border-radius: 0 3px 3px 0;
  transition: height var(--transition-base);
}

.chapter-item:hover {
  background: var(--amber-subtle);
}

.chapter-item.active {
  background: var(--surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04), 0 0 0 1px var(--border);
}

.chapter-item.active::before {
  height: 24px;
}

.chapter-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  padding: 10px 12px;
  color: var(--charcoal);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
  line-height: 1.4;
}

.chapter-item.active .chapter-link {
  color: var(--charcoal);
  font-weight: 500;
}

.chapter-kicker {
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1.3;
  letter-spacing: 0.1em;
  text-transform: none;
}

.chapter-link .chapter-kicker,
.chapter-item.active .chapter-kicker {
  color: var(--amber) !important;
}

.chapter-title {
  overflow: visible;
  text-overflow: clip;
  white-space: normal;
  word-break: break-word;
  display: block;
  width: 100%;
  font-size: 0.95rem;
  line-height: 1.45;
}

.pdf-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 12px;
  color: var(--charcoal);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 12px;
  background: #f4f4f4;
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.print-button {
  appearance: none;
  cursor: pointer;
  text-align: left;
  font: inherit;
}

.sidebar-top-action .print-button {
  width: 100%;
}

.pdf-link:hover {
  background: #ffffff;
  border-color: var(--border-strong);
  color: var(--charcoal);
}

.pdf-icon {
  font-size: 1rem;
}

/* ─── Mobile Sidebar Overlay ─── */
.mobile-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(45, 42, 38, 0.4);
  backdrop-filter: blur(4px);
  z-index: 40;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-sidebar-overlay.active {
  opacity: 1;
}

/* ─── Main Content ─── */
.content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 1.5rem var(--space-xl) var(--space-3xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  position: relative;
}

/* Decorative Ambient Glow */
.content::before {
  content: '';
  position: fixed;
  top: 10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: none;
  pointer-events: none;
  z-index: 0;
}

.chapter {
  width: 100%;
  max-width: var(--media-max-width);
  position: relative;
  z-index: 1;
}

.book-sections {
  padding-bottom: var(--space-4xl);
}

.book-section {
  scroll-margin-top: calc(var(--header-height) + 32px);
  margin-top: var(--space-4xl);
}

.book-section:first-child {
  margin-top: 1.75rem;
}

.book-section.intro-section:first-child {
  margin-top: 0.65rem;
}

/* ─── Chapter Entrance Animation ─── */
.chapter {
  animation: chapterFadeUp var(--transition-slow) ease both;
}

@keyframes chapterFadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Chapter Header ─── */
.chapter-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto 0.875rem;
}

.chapter-number {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber);
  background: var(--amber-glow);
  padding: 4px 12px;
  border-radius: 4px;
}

.chapter-header-emoji {
  font-size: 1.375rem;
}

/* ─── Chapter Content — Typography ─── */
.chapter-content {
  color: var(--charcoal);
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.chapter-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-xl);
  color: var(--charcoal);
}

.chapter-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 400;
  line-height: 1.25;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  color: var(--charcoal);
  position: relative;
}

.chapter-content h3 {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  color: var(--charcoal);
}

.chapter-content p {
  margin-bottom: var(--space-lg);
  color: var(--charcoal);
}

.chapter-content p:last-child {
  margin-bottom: 0;
}

.chapter-content strong {
  font-weight: 600;
  color: var(--charcoal);
}

.chapter-content em {
  font-style: italic;
  color: var(--warm-gray);
}

.chapter-content a {
  color: var(--amber);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  transition: text-decoration-color var(--transition-fast);
}

.chapter-content a:hover {
  color: var(--amber-light);
  text-decoration-color: var(--amber-light);
}

/* Lists */
.chapter-content ul,
.chapter-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.chapter-content li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-xs);
}

.chapter-content li::marker {
  color: var(--amber);
  font-weight: 600;
}

/* Blockquotes */
.chapter-content blockquote {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl) var(--space-xl) var(--space-xl) var(--space-2xl);
  background: var(--amber-subtle);
  border-left: 3px solid var(--amber);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  font-size: 1.0625rem;
  color: var(--charcoal);
  position: relative;
}

.chapter-content blockquote::before {
  content: '\201C';
  position: absolute;
  top: 8px;
  left: 12px;
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--amber);
  line-height: 1;
  opacity: 0.5;
}

.chapter-content blockquote p {
  margin-bottom: 0;
}

/* Code */
.chapter-content code {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.875em;
  background: rgba(45, 42, 38, 0.06);
  padding: 0.15em 0.45em;
  border-radius: 5px;
}

.chapter-content pre {
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: var(--charcoal);
  border-radius: 12px;
  overflow-x: auto;
}

.chapter-content pre code {
  background: none;
  padding: 0;
  color: #f0ece4;
  font-size: 0.8125rem;
}

/* Horizontal Rule */
.chapter-content hr {
  border: none;
  height: 1px;
  background: var(--border-strong);
  margin: var(--space-3xl) 0;
}

/* Images */
.chapter-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: var(--space-2xl) 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.chapter-content table {
  width: 100%;
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  margin: var(--space-2xl) 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.chapter-content thead {
  background: rgba(255, 0, 85, 0.06);
}

.chapter-content th,
.chapter-content td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  min-width: 120px;
}

.chapter-content th {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--charcoal);
}

.chapter-content tbody tr:nth-child(even) {
  background: #fafafa;
}

.chapter-content tbody tr:last-child td {
  border-bottom: none;
}

/* Key Takeaway / Highlight Box */
.chapter-content .highlight-box,
.chapter-content .key-takeaway {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

/* Number Callout */
.chapter-content .number-callout {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.chapter-content .number-callout .number {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--amber);
  line-height: 1;
  flex-shrink: 0;
}

/* ─── CTA Blocks ─── */

/* Between-Chapter CTA (Inline) */
.cta-inline {
  margin: var(--space-3xl) 0;
  padding: var(--space-2xl) var(--space-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-inline::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 200px;
  height: 200px;
  background: none;
  pointer-events: none;
}

.cta-inline-text {
  font-family: var(--font-display);
  font-size: 1.375rem;
  color: var(--charcoal);
  margin-bottom: var(--space-lg);
  position: relative;
}

.cta-inline-sub {
  font-size: 0.9375rem;
  color: var(--warm-gray);
  margin-bottom: var(--space-xl);
  position: relative;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  background: var(--cta-bg);
  color: var(--cta-text);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  box-shadow: none;
  transition: none;
  position: relative;
}

.cta-button:hover {
  background: var(--cta-hover);
  color: var(--cta-text);
  transform: none;
  box-shadow: none;
}

.cta-button-arrow {
  transition: none;
  font-size: 1.125rem;
}

.cta-button:hover .cta-button-arrow {
  transform: none;
}

/* End-of-Book CTA (Full) */
.cta-end {
  margin: var(--space-4xl) 0 var(--space-2xl);
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
  padding: var(--space-3xl) var(--space-2xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.cta-end::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--amber);
}

.cta-end::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 200px;
  background: none;
  pointer-events: none;
}

.cta-end-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--charcoal);
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-end-text {
  font-size: 1rem;
  color: var(--warm-gray);
  margin-bottom: var(--space-2xl);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  position: relative;
}

.cta-end-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  position: relative;
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: #FFFFFF;
  color: var(--charcoal);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: 9999px;
  border: 1px solid #666666;
  transition: none;
}

.cta-secondary:hover {
  border-color: var(--amber);
  color: var(--charcoal);
  background: #FFFFFF;
  transform: none;
  box-shadow: none;
}

/* Testimonial in End CTA */
.cta-testimonial {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  position: relative;
}

.cta-testimonial-text {
  font-style: italic;
  font-size: 0.9375rem;
  color: var(--warm-gray);
  margin-bottom: var(--space-sm);
  line-height: 1.65;
}

.cta-testimonial-author {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--charcoal);
}

/* ─── Sticky Footer CTA ─── */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: var(--sidebar-width);
  right: 0;
  z-index: 90;
  transform: translateY(100%);
  transition: transform var(--transition-base);
  pointer-events: none;
}

.sticky-cta.visible {
  transform: translateY(0);
  pointer-events: auto;
}

.sticky-cta-inner {
  max-width: 100%;
  margin: 0 auto;
  padding: 12px var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  background: var(--surface-glass);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-top: 1px solid var(--border);
}

.sticky-cta-text {
  font-size: 0.9375rem;
  color: var(--warm-gray);
  white-space: nowrap;
}

.sticky-cta-text strong {
  color: var(--charcoal);
}

.sticky-cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--cta-bg);
  color: var(--cta-text);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  box-shadow: none;
  transition: none;
  white-space: nowrap;
}

.sticky-cta-button:hover {
  background: var(--cta-hover);
  color: var(--cta-text);
  transform: none;
  box-shadow: none;
}

.sticky-cta-close {
  background: none;
  border: none;
  color: var(--warm-gray-light);
  cursor: pointer;
  padding: 4px;
  font-size: 1.25rem;
  line-height: 1;
  transition: color var(--transition-fast);
}

.sticky-cta-close:hover {
  color: var(--charcoal);
}

.print-footer {
  display: none;
}

/* ─── Book Cover (Chapter 1) ─── */
.book-cover {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  min-height: auto;
  width: 100%;
  max-width: none;
  align-self: stretch;
  padding: 2.75rem 1.5rem 2.9rem;
  background: #f8f8f8;
  border: none;
  border-radius: 20px;
  box-shadow: none;
  position: relative;
  z-index: 1;
}

.book-cover-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--amber);
  background: rgba(255, 0, 85, 0.08);
  border: none;
  padding: 0.28rem 0.65rem;
  border-radius: 20px;
  margin-bottom: 0.7rem;
  box-shadow: none;
}

.book-cover-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.1;
  color: var(--charcoal);
  margin-bottom: 0.625rem;
}

.book-cover-subtitle {
  font-size: 1.05rem;
  color: var(--warm-gray);
  line-height: 1.55;
  max-width: 570px;
  margin-bottom: 0.5rem;
}

.book-cover-author {
  font-size: 1rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.75rem;
}

.book-cover-lead {
  width: 100%;
  max-width: 700px;
  margin-bottom: 1rem;
  text-align: center;
}

.book-cover-lead p,
.book-cover-lead blockquote,
.book-cover-lead hr {
  margin-bottom: var(--space-lg);
}

.book-cover-lead blockquote {
  margin-top: 0;
  padding: var(--space-lg) var(--space-xl);
  background: var(--amber-subtle);
  border-left: 3px solid var(--amber);
  border-radius: 0 12px 12px 0;
}

.book-cover-lead blockquote p {
  margin-bottom: 0;
}

.book-cover-lead hr {
  border: none;
  border-top: 1px solid var(--border-strong);
}

.book-cover-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  margin-top: 0.35rem;
}

.book-cover-ctas {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
}

.book-cover-pdf {
  width: auto;
  min-width: 210px;
  justify-content: center;
  background: #ffffff;
  border-color: var(--border);
}

.book-cover-scroll {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  margin-top: 0.15rem;
  text-align: center;
}

.book-cover-scroll-text {
  font-size: 0.82rem;
  line-height: 1.45;
  max-width: 320px;
  color: var(--warm-gray);
  margin: 0;
}

.book-cover-inline-link {
  color: var(--warm-gray);
  text-decoration: underline;
  text-decoration-color: rgba(102, 102, 102, 0.55);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.book-cover-inline-link-wrap {
  display: block;
}

.book-cover-inline-link:hover {
  color: var(--charcoal);
  text-decoration-color: rgba(0, 0, 0, 0.45);
}

.book-cover-scroll-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--amber);
  text-decoration: none;
}

/* ─── Chapter Visuals ─── */
.chapter-visual {
  width: 100%;
  max-width: var(--media-max-width);
  margin: 0 auto 1.8rem;
}

.chapter-visual-cover {
  margin: var(--space-3xl) auto 1.8rem;
}

.chapter-visual-selftest {
  margin: 0 auto 1.5rem;
}

.chapter-visual-next-step {
  max-width: none;
  width: calc(100% + (var(--space-2xl) * 2));
  margin: calc(var(--space-3xl) * -1) calc(var(--space-2xl) * -1) 1.5rem;
}

.chapter-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: none;
  border-radius: 24px;
  box-shadow: none;
}

.chapter-visual-next-step img {
  border-radius: 0;
}

/* ─── Selbsttest ─── */
.selftest-section {
  margin-top: var(--space-4xl);
}

.selftest-section .chapter-header {
  display: none;
}

.selftest-hero {
  margin-bottom: 1.5rem;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100vw - var(--sidebar-width) - (var(--space-xl) * 2));
  max-width: none;
  padding: 2.75rem 1.5rem 3.6rem;
  min-height: 24rem;
  border-radius: 20px;
  background: #f8f8f8;
  border: none;
  color: var(--charcoal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: none;
}

.selftest-hero .chapter-visual-selftest {
  width: 100%;
  max-width: 760px;
  margin: 0 auto 1.5rem;
}

.selftest-hero-kicker {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.65rem;
  border-radius: 20px;
  background: rgba(255, 0, 85, 0.06);
  color: var(--amber);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.7rem;
  border: none;
}

.selftest-hero h1 {
  color: var(--charcoal);
  margin-bottom: 0.45rem;
  line-height: 1.05;
}

.selftest-hero-subtitle {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: var(--warm-gray);
  line-height: 1.55;
  font-size: 1.05rem;
}

.selftest-intro {
  margin-bottom: 1.75rem;
}

.scorecard {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.scorecard-category {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  padding: 1.25rem;
  box-shadow: none;
}

.scorecard-category.is-complete {
  border-color: rgba(255, 0, 85, 0.28);
  box-shadow: none;
}

.scorecard-category[data-active-stage="4"] {
  border-color: rgba(30, 140, 84, 0.32);
}

.scorecard-category-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.scorecard-category-kicker {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.3rem;
}

.scorecard-category-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  line-height: 1.2;
}

.scorecard-category-score {
  flex-shrink: 0;
  min-width: 5.4rem;
  text-align: right;
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  color: var(--charcoal);
}

.scorecard-category-score small {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--warm-gray);
}

.scorecard-options {
  display: grid;
  gap: 0.85rem;
}

.scorecard-option {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
  background: #fcfcfc;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  transition: opacity var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.scorecard-option.tone-1 {
  background: #fff7fa;
}

.scorecard-option.tone-2 {
  background: #fffaf2;
}

.scorecard-option.tone-3 {
  background: #fbfbf4;
}

.scorecard-option.tone-4 {
  background: #f6fcf8;
}

.scorecard-option-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  min-height: 100%;
}

.scorecard-option-stars {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.18rem;
  color: var(--amber);
  line-height: 1;
}

.scorecard-option-stars svg {
  width: 0.78rem;
  height: 0.78rem;
  display: block;
  fill: currentColor;
}

.scorecard-option-text {
  margin-bottom: 0;
  color: var(--charcoal);
  line-height: 1.65;
}

.scorecard-option-points {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 3.5rem;
}

.scorecard-point {
  border: 1px solid var(--border-strong);
  background: #ffffff;
  color: var(--charcoal);
  border-radius: 9999px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.scorecard-point:hover {
  border-color: var(--amber);
  transform: translateY(-1px);
}

.scorecard-option.is-selected {
  border-color: rgba(255, 0, 85, 0.28);
  background: #ffffff;
  box-shadow: 0 10px 26px rgba(255, 0, 85, 0.08);
}

.scorecard-category.has-selection .scorecard-option.is-muted {
  opacity: 0.42;
}

.scorecard-point.is-selected {
  background: var(--amber);
  border-color: var(--amber);
  color: #ffffff;
}

.scorecard-summary {
  margin-top: 0.75rem;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: #f1f1f1;
  color: var(--charcoal);
  padding: 1.5rem;
}

.scorecard-summary-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.scorecard-summary-kicker {
  color: var(--amber);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.scorecard-summary h2 {
  color: var(--charcoal);
  margin: 0 0 0.35rem;
}

.scorecard-summary-completion {
  color: var(--warm-gray);
  font-size: 0.95rem;
}

.scorecard-summary-total {
  flex-shrink: 0;
  text-align: right;
  font-family: var(--font-display);
  font-size: 2.75rem;
  line-height: 0.95;
  color: var(--amber);
}

.scorecard-summary-total small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--warm-gray);
}

.scorecard-summary-grid {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
}

.scorecard-summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 0.8rem 0.9rem;
  border-radius: 14px;
  background: #ffffff;
}

.scorecard-summary-row.total {
  margin-top: 0.3rem;
  background: rgba(255, 0, 85, 0.08);
  border: 1px solid rgba(255, 0, 85, 0.18);
}

.scorecard-summary-name {
  color: var(--charcoal);
}

.scorecard-summary-value {
  color: var(--charcoal);
  font-weight: 700;
}

.scorecard-ranges {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.scorecard-range {
  padding: 1rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #ffffff;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.scorecard-range.is-active {
  border-color: rgba(255, 0, 85, 0.42);
  background: rgba(255, 0, 85, 0.08);
  transform: translateY(-1px);
}

.scorecard-range-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.45rem;
}

.scorecard-range-text {
  color: var(--warm-gray);
  line-height: 1.6;
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* ─── Pagination ─── */
.chapter-pagination {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border);
}

.pagination-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg) var(--space-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  text-decoration: none;
  transition: all var(--transition-base);
  max-width: 48%;
}

.pagination-link:hover {
  border-color: var(--border-strong);
  box-shadow: none;
  transform: none;
}

.pagination-link.next {
  text-align: right;
  margin-left: auto;
}

.pagination-link.cta {
  background: var(--cta-bg);
  border-color: var(--cta-bg);
}

.pagination-link.cta:hover {
  background: var(--cta-hover);
  border-color: var(--cta-hover);
  box-shadow: none;
}

.pagination-link.cta:hover .pagination-title,
.pagination-link.cta:hover .pagination-direction {
  color: var(--cta-text);
}

.pagination-direction {
  font-size: 0.8125rem;
  color: var(--warm-gray-light);
  letter-spacing: 0.02em;
}

.pagination-title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  color: var(--charcoal);
}

.pagination-placeholder {
  flex: 1;
}

/* ─── Mobile Styles ─── */
@media (max-width: 960px) {
  .header,
  .sticky-cta {
    left: 0;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .sidebar {
    top: calc(var(--header-height) + var(--progress-height));
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .mobile-sidebar-overlay {
    display: block;
    pointer-events: none;
  }

  .mobile-sidebar-overlay.active {
    pointer-events: auto;
  }

  .content {
    margin-left: 0;
    padding: 1.25rem var(--space-lg) var(--space-2xl);
  }

  .chapter-nav {
    padding: 1.25rem 0.75rem 1.5rem;
  }

  .content::before {
    display: none;
  }

  .chapter-progress-text {
    display: none;
  }

  .sticky-cta-text {
    display: none;
  }

  .sticky-cta-inner {
    justify-content: space-between;
    padding: 10px var(--space-lg);
  }

  .sticky-cta-button {
    flex: 1;
    justify-content: center;
  }

  .scorecard-ranges {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 600px) {
  .header-inner {
    padding: 0 var(--space-md);
  }

  .logo-text {
    font-size: 1.05rem;
  }

  .logo-icon {
    display: none;
  }

  .header-cta {
    padding: 6px 12px;
    font-size: 0.8125rem;
  }

  .content {
    padding: var(--space-xl) var(--space-md);
  }

  .chapter-content h1 {
    font-size: 1.75rem;
  }

  .chapter-content h2 {
    font-size: 1.375rem;
  }

  .chapter-content h3 {
    font-size: 1.0625rem;
  }

  .chapter-pagination {
    flex-direction: column;
  }

  .pagination-link {
    max-width: 100%;
  }

  .pagination-link.next {
    text-align: left;
  }

  .cta-inline {
    padding: var(--space-xl) var(--space-lg);
  }

  .cta-end {
    padding: var(--space-2xl) var(--space-lg);
  }

  .book-cover {
    min-height: auto;
    padding: 2rem 1rem 2.2rem;
  }

  .book-cover-ctas {
    display: flex;
    width: 100%;
  }

  .book-cover-ctas .cta-button {
    width: 100%;
    justify-content: center;
  }

  .book-cover-pdf {
    width: 100%;
  }

  .book-cover-scroll {
    width: 100%;
  }

  .book-cover-scroll-text {
    max-width: none;
  }

  .chapter-visual {
    width: 100%;
  }

  .scorecard-category,
  .scorecard-summary,
  .selftest-hero {
    padding: 1.6rem 1rem 1.75rem;
  }

  .selftest-hero {
    left: 0;
    transform: none;
    width: 100%;
    min-height: auto;
  }

  .scorecard-option {
    grid-template-columns: 1fr auto;
  }

  .scorecard-category-header,
  .scorecard-summary-header {
    flex-direction: column;
  }

  .scorecard-category-score,
  .scorecard-summary-total {
    text-align: left;
  }

  .sticky-cta-inner {
    padding: 10px var(--space-md);
  }
}

/* ─── Brand Overrides (Pink / Flat) ─── */
body,
.book-layout,
.content {
  background: var(--surface);
}

.header,
.sidebar,
.sticky-cta-inner {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.content::before,
.cta-inline::before,
.cta-end::after {
  background: none;
}

.reading-progress-bar {
  background: var(--amber);
}

.chapter-content a {
  color: var(--amber);
  text-decoration-color: var(--amber);
}

.chapter-content a:hover {
  color: var(--amber-light);
  text-decoration-color: var(--amber-light);
}

.chapter-content hr {
  background: var(--border-strong);
}

.chapter-content blockquote {
  background: var(--amber-subtle);
}

.cta-inline,
.cta-end {
  background: var(--surface);
}

.cta-end::before {
  background: var(--amber);
}

.header-cta,
.cta-button,
.sticky-cta-button {
  background: var(--cta-bg);
  color: var(--cta-text);
  border-radius: 9999px;
  box-shadow: none;
  transition: none;
  animation: none;
  transform: none;
}

.header-cta:hover,
.cta-button:hover,
.sticky-cta-button:hover {
  background: var(--cta-hover);
  color: var(--cta-text);
  box-shadow: none;
  transform: none;
}

.header-cta-arrow,
.cta-button-arrow {
  transition: none;
}

.header-cta:hover .header-cta-arrow,
.cta-button:hover .cta-button-arrow {
  transform: none;
}

.cta-secondary {
  background: #FFFFFF;
  color: var(--charcoal);
  border: 1px solid #666666;
  border-radius: 9999px;
  transition: none;
}

.cta-secondary:hover {
  background: #FFFFFF;
  color: var(--charcoal);
  border-color: var(--amber);
  box-shadow: none;
  transform: none;
}

.pagination-link.cta {
  background: var(--cta-bg);
  border-color: var(--cta-bg);
}

.pagination-link.cta .pagination-title,
.pagination-link.cta .pagination-direction {
  color: var(--cta-text);
}

.pagination-link.cta:hover {
  background: var(--cta-hover);
  border-color: var(--cta-hover);
}

.pagination-link:hover {
  box-shadow: none;
  transform: none;
}

/* ─── Accessibility ─── */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ─── Selection ─── */
::selection {
  background: var(--amber-glow);
  color: var(--charcoal);
}

/* ─── Book Video ─── */
.book-illustration {
  margin: 2.5rem auto;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.85rem;
}

.book-illustration--wide {
  max-width: 880px;
}

.book-illustration--medium {
  max-width: 680px;
}

.book-illustration img {
  display: block;
  width: 100%;
  margin: 0;
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid rgba(20, 20, 20, 0.08);
  box-shadow: 0 24px 60px rgba(20, 20, 20, 0.16);
}

.book-illustration__caption {
  margin: 0;
  text-align: center;
  font-size: 0.92rem;
  line-height: 1.5;
  color: #6a6f79;
  max-width: 38rem;
  align-self: center;
}

.book-image-grid {
  display: block;
  max-width: 760px;
  margin: 2.5rem auto 2.75rem;
}

.book-image-grid .book-illustration {
  max-width: none;
  margin: 0 0 2rem;
}

.book-image-grid .book-illustration:last-child {
  margin-bottom: 0;
}

.author-profile {
  margin: 1.25rem auto 2rem;
  width: fit-content;
}

.author-profile img {
  display: block;
  width: 172px;
  height: 172px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid rgba(20, 20, 20, 0.08);
  box-shadow: 0 18px 42px rgba(20, 20, 20, 0.14);
}

.book-video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  align-items: start;
  max-width: 760px;
  margin: 2.25rem auto 2.75rem;
}

.book-video-grid .book-video {
  width: 100%;
  max-width: none;
  margin: 0;
}

.book-video {
  margin: 2.75rem auto;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.book-video__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 18px;
  overflow: hidden;
  background: #000;
  box-shadow: 0 24px 60px rgba(20, 20, 20, 0.22);
  border: 1px solid rgba(20, 20, 20, 0.08);
}

.book-video--landscape {
  max-width: 720px;
}

.book-video--landscape .book-video__frame {
  aspect-ratio: 16 / 9;
}

.book-video__frame iframe,
.book-video__frame video,
.book-video__player {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: #000;
  object-fit: cover;
}

.book-video__caption {
  margin: 0;
  text-align: center;
  font-size: 0.92rem;
  line-height: 1.5;
  color: #6a6f79;
  max-width: 28rem;
}

@media (max-width: 640px) {
  .book-image-grid {
    max-width: 100%;
  }

  .book-illustration,
  .book-illustration--wide,
  .book-illustration--medium {
    max-width: 100%;
  }

  .author-profile img {
    width: 144px;
    height: 144px;
  }

  .book-video-grid {
    grid-template-columns: 1fr;
    max-width: 280px;
  }

  .book-video {
    max-width: 280px;
  }
}

/* ─── Secondary CTA (Buch-interne Call-to-Actions) ─── */
.book-cta {
  margin: 2.5rem 0;
  padding: 2rem 2rem 2.25rem;
  border-radius: 20px;
  background: #f7f7f7;
  border: 1px solid rgba(20, 20, 20, 0.06);
}

.book-cta__kicker {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #ff0055;
  font-weight: 600;
}

.book-cta__title {
  margin: 0 0 0.6rem;
  font-family: var(--serif, 'DM Serif Display', serif);
  font-size: 1.55rem;
  line-height: 1.25;
  color: #141414;
}

.book-cta__body {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.55;
  color: #3a3f49;
}

a.book-cta__button,
a.book-cta__button:link,
a.book-cta__button:visited {
  display: inline-block;
  padding: 0.85rem 1.4rem;
  background: #ff0055;
  color: #ffffff !important;
  font-weight: 600;
  text-decoration: none !important;
  border-radius: 10px;
  transition: transform 0.15s ease, background 0.15s ease;
  border-bottom: 0;
}

a.book-cta__button:hover,
a.book-cta__button:focus {
  background: #d90048;
  color: #ffffff !important;
  transform: translateY(-1px);
  text-decoration: none !important;
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .reading-progress-bar {
    transition: none;
  }
}