/* ═══════════════════════════════════════════════════════════════════════════
   TUTORIAL / LANDING PAGE STYLES
   ═══════════════════════════════════════════════════════════════════════════ */

.tutorial-view {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* Hero Section */
.tutorial-hero {
  position: relative;
  padding: 60px 20px;
  text-align: center;
  background: var(--surface-raised);
  border-radius: 16px;
  margin-bottom: 40px;
  overflow: hidden;
}

.tutorial-hero .hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, var(--accent-gold-subtle) 0%, transparent 70%);
  pointer-events: none;
}

.tutorial-hero .hero-content {
  position: relative;
  z-index: 1;
}

.tutorial-hero .hero-moon-phases {
  font-size: 2em;
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
  gap: 15px;
}

.tutorial-hero .hero-moon-phases .phase-icon {
  opacity: 0.4;
  transition: opacity 0.3s, transform 0.3s;
}

.tutorial-hero .hero-moon-phases .phase-icon.active {
  opacity: 1;
  transform: scale(1.3);
}

.tutorial-hero h1 {
  font-size: 2.5em;
  color: var(--text-primary);
  margin: 0 0 10px;
  font-weight: 600;
}

.tutorial-hero .hero-subtitle {
  font-size: 1.3em;
  color: var(--accent-gold);
  margin: 0 0 20px;
  font-style: italic;
}

.tutorial-hero .hero-description {
  font-size: 1.1em;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 30px;
  line-height: 1.6;
}

.tutorial-hero .hero-actions {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.tutorial-hero .hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1.1em;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-weight: 500;
}

.tutorial-hero .hero-btn.primary {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold) 100%);
  color: var(--surface-base);
}

.tutorial-hero .hero-btn.primary:hover {
  background: linear-gradient(135deg, var(--accent-gold-hover) 0%, var(--accent-gold) 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--accent-gold-strong);
}

.tutorial-hero .hero-btn.secondary {
  background: var(--border-subtle);
  color: var(--text-primary);
  border: 1px solid var(--accent-gold-strong);
}

.tutorial-hero .hero-btn.secondary:hover {
  background: var(--border-default);
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

/* Section Titles */
.tutorial-view .section-title {
  font-size: 1.8em;
  color: var(--accent-gold);
  text-align: center;
  margin: 0 0 15px;
  font-weight: 600;
}

.tutorial-view .section-intro {
  text-align: center;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 30px;
  line-height: 1.6;
}

.tutorial-view .subsection-title {
  font-size: 1.3em;
  color: var(--color-purple);
  margin: 30px 0 15px;
  text-align: center;
}

/* Features Section */
.features-section {
  margin-bottom: 50px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--surface-raised);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-gold-strong);
  box-shadow: 0 8px 25px var(--surface-scrim);
}

.feature-card .feature-icon-wrap {
  font-size: 2.5em;
  margin-bottom: 15px;
}

.feature-card .feature-icon-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.feature-card h3 {
  color: var(--text-primary);
  margin: 0 0 10px;
  font-size: 1.2em;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95em;
  line-height: 1.5;
  margin: 0 0 15px;
}

.feature-card .feature-link {
  color: var(--accent-primary);
  font-size: 0.9em;
  font-weight: 500;
}

.feature-card:hover .feature-link {
  color: var(--accent-primary-hover);
}

/* Principles Section */
.principles-section {
  margin-bottom: 50px;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.principle-card {
  background: var(--surface-raised);
  border: 1px solid var(--accent-gold-subtle);
  border-radius: 12px;
  padding: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.principle-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-gold-strong);
  box-shadow: var(--shadow-lg);
}

.principle-card .principle-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.principle-card .principle-icon {
  font-size: 1.8em;
}

.principle-card h3 {
  color: var(--text-primary);
  margin: 0;
  font-size: 1.15em;
}

.principle-card p {
  color: var(--text-secondary);
  font-size: 0.9em;
  line-height: 1.5;
  margin: 0 0 12px;
}

.principle-card .principle-verse {
  background: var(--accent-gold-subtle);
  border-left: 3px solid var(--accent-gold);
  padding: 10px 12px;
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.85em;
  line-height: 1.5;
  border-radius: 0 6px 6px 0;
  margin-bottom: 12px;
}

.principle-card .learn-link {
  color: var(--accent-primary);
  font-size: 0.85em;
  font-weight: 500;
}

.principle-card:hover .learn-link {
  color: var(--accent-primary-hover);
}

/* Chapters Section */
.chapters-section {
  margin-bottom: 50px;
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.chapter-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  color: inherit;
  font-size: inherit;
}

.chapter-item:hover {
  background: var(--surface-highlight);
  border-color: var(--accent-gold-muted);
  transform: translateX(3px);
}

.chapter-item .chapter-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent-gold-muted);
  border-radius: 50%;
  color: var(--accent-gold);
  font-weight: 600;
  font-size: 0.85em;
  flex-shrink: 0;
}

.chapter-item.appendix .chapter-number {
  background: var(--color-purple-muted);
  color: var(--color-purple);
}

.chapter-item .chapter-title {
  color: var(--text-secondary);
  font-size: 0.9em;
}

.chapters-grid.appendices {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* Compare Section */
.compare-section {
  margin-bottom: 50px;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.compare-card {
  background: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.compare-card.featured {
  border-color: var(--border-gold);
  background: var(--accent-gold-subtle);
}

.compare-card .compare-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold) 100%);
  color: var(--surface-base);
  padding: 4px 14px;
  border-radius: 12px;
  font-size: 0.75em;
  font-weight: 600;
  text-transform: uppercase;
}

.compare-card .compare-icon-main {
  font-size: 2.5em;
  margin-bottom: 10px;
}

.compare-card h4 {
  color: var(--text-primary);
  margin: 0 0 15px;
  font-size: 1.1em;
}

.compare-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  text-align: left;
}

.compare-card ul li {
  color: var(--text-secondary);
  padding: 6px 0;
  font-size: 0.9em;
  border-bottom: 1px solid var(--surface-hover);
}

.compare-card ul li:last-child {
  border-bottom: none;
}

.compare-card ul li::before {
  content: "✓ ";
  color: var(--accent-primary);
}

.compare-card .compare-btn {
  background: var(--accent-primary-muted);
  border: 1px solid var(--border-accent);
  color: var(--accent-primary);
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9em;
  width: 100%;
}

.compare-card .compare-btn:hover {
  background: var(--accent-primary-muted);
  border-color: var(--accent-primary);
}

.compare-card.featured .compare-btn {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold) 100%);
  border: none;
  color: var(--surface-base);
  font-weight: 500;
}

.compare-card.featured .compare-btn:hover {
  background: linear-gradient(135deg, var(--accent-gold-hover) 0%, var(--accent-gold) 100%);
}

/* Quick Start Section */
.quickstart-section {
  margin-bottom: 50px;
}

.quickstart-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  counter-reset: step-counter;
}

.step-card {
  background: var(--surface-raised);
  border: 1px solid var(--border-default);
  border-radius: 16px;
  padding: 28px 24px;
  position: relative;
  transition: all 0.3s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary-strong);
  box-shadow: 0 12px 32px var(--surface-scrim);
}

.step-card .step-number {
  position: absolute;
  top: -12px;
  left: 24px;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-hover) 100%);
  color: var(--text-inverse);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1em;
  box-shadow: 0 4px 12px var(--accent-primary-strong);
}

.step-card h4 {
  color: var(--text-primary);
  font-size: 1.15em;
  margin: 8px 0 12px;
  font-weight: 600;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.92em;
  line-height: 1.6;
  margin: 0 0 18px;
}

.step-card .step-btn {
  background: var(--accent-primary-subtle);
  border: 1px solid var(--accent-primary-strong);
  color: var(--accent-primary);
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9em;
  font-weight: 500;
  transition: all 0.2s ease;
  width: 100%;
}

.step-card .step-btn:hover {
  background: var(--accent-primary-muted);
  border-color: var(--accent-primary);
  transform: translateY(-1px);
}

/* Book Section */
.book-section {
  margin-bottom: 50px;
}

.book-card {
  display: flex;
  gap: 40px;
  background: var(--surface-raised);
  border: 1px solid var(--border-gold);
  border-radius: 20px;
  padding: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.book-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--accent-gold-subtle) 0%, transparent 70%);
  pointer-events: none;
}

.book-cover {
  flex-shrink: 0;
  width: 160px;
  perspective: 800px;
  position: relative;
}

.book-cover-img {
  width: 100%;
  height: auto;
  border-radius: 4px 12px 12px 4px;
  box-shadow: 
    8px 8px 24px var(--surface-scrim),
    4px 4px 12px var(--surface-scrim);
  border: 1px solid var(--accent-gold-muted);
  transform: rotateY(-8deg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.book-card:hover .book-cover-img {
  transform: rotateY(-3deg);
  box-shadow: 
    12px 12px 32px var(--surface-scrim),
    6px 6px 16px var(--surface-scrim);
}

.book-info {
  flex: 1;
  position: relative;
  z-index: 1;
}

.book-info h3 {
  color: var(--text-primary);
  font-size: 1.8em;
  margin: 0 0 8px;
  font-weight: 600;
}

.book-info .book-author {
  color: var(--accent-gold);
  font-size: 1.05em;
  margin: 0 0 16px;
  font-style: italic;
}

.book-info .book-description {
  color: var(--text-secondary);
  font-size: 1em;
  line-height: 1.7;
  margin: 0 0 24px;
}

.book-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.book-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 1em;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.book-btn.primary {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold) 100%);
  border: none;
  color: var(--text-inverse);
  box-shadow: 0 4px 16px var(--accent-gold-muted);
}

.book-btn.primary:hover {
  background: linear-gradient(135deg, var(--accent-gold-hover) 0%, var(--accent-gold) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-gold-strong);
}

.book-btn.secondary {
  background: var(--accent-primary-subtle);
  border: 1px solid var(--accent-primary-strong);
  color: var(--accent-primary);
}

.book-btn.secondary:hover {
  background: var(--accent-primary-muted);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* Install App Section */
.install-section {
  margin-bottom: 50px;
}

.install-card {
  display: flex;
  gap: 28px;
  background: var(--surface-raised);
  border: 1px solid var(--border-accent);
  border-radius: 16px;
  padding: 36px;
  align-items: flex-start;
}

.install-icon {
  font-size: 3em;
  flex-shrink: 0;
  line-height: 1;
}

.install-info {
  flex: 1;
  min-width: 0;
}

.install-info h3 {
  color: var(--text-primary);
  font-size: 1.5em;
  margin: 0 0 12px;
  font-weight: 600;
}

.install-info p {
  color: var(--text-secondary);
  font-size: 1em;
  line-height: 1.7;
  margin: 0 0 20px;
}

.install-features {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-bottom: 24px;
}

.install-feature {
  color: var(--text-primary);
  font-size: 0.95em;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.install-check {
  color: var(--color-success);
  font-weight: 700;
}

.install-btn {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-hover) 100%);
  color: var(--text-inverse);
  border: none;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 1.05em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px var(--accent-primary-strong);
}

.install-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-primary-strong);
}

.install-hint {
  color: var(--text-tertiary);
  font-size: 0.85em;
  margin: 12px 0 0;
  line-height: 1.5;
}

.install-section.installed .install-card {
  border-color: var(--color-success-muted);
}

.install-section.installed .install-info h3 {
  color: var(--color-success);
}

@media (max-width: 768px) {
  .install-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 20px;
    gap: 16px;
  }

  .install-features {
    justify-content: center;
  }

  .install-btn {
    width: 100%;
  }
}

/* Footer */
.tutorial-footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 40px;
}

.tutorial-footer .footer-verse {
  margin-bottom: 20px;
}

.tutorial-footer .footer-verse p {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 1.1em;
  margin: 0 0 8px;
}

.tutorial-footer .footer-verse cite {
  color: var(--accent-gold);
  font-size: 0.9em;
}

.tutorial-footer .footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.tutorial-footer .footer-links button,
.tutorial-footer .footer-links a {
  background: none;
  border: none;
  color: var(--accent-primary);
  cursor: pointer;
  font-size: 0.9em;
  text-decoration: none;
  transition: color 0.2s;
}

.tutorial-footer .footer-links button:hover,
.tutorial-footer .footer-links a:hover {
  color: var(--accent-primary-hover);
}

.tutorial-footer .footer-links span {
  color: var(--border-strong);
}

/* Tutorial Mobile Responsive */
@media (max-width: 768px) {
  .tutorial-view {
    padding: 0 15px 30px;
  }
  
  .tutorial-hero {
    padding: 40px 15px;
    margin-bottom: 30px;
  }
  
  .tutorial-hero h1 {
    font-size: 1.8em;
  }
  
  .tutorial-hero .hero-subtitle {
    font-size: 1.1em;
  }
  
  .tutorial-hero .hero-description {
    font-size: 1em;
  }
  
  .tutorial-hero .hero-btn {
    padding: 12px 20px;
    font-size: 1em;
  }
  
  .tutorial-view .section-title {
    font-size: 1.5em;
  }
  
  .features-grid,
  .principles-grid,
  .compare-grid {
    grid-template-columns: 1fr;
  }
  
  .chapters-grid {
    grid-template-columns: 1fr;
  }
  
  .quickstart-steps {
    grid-template-columns: 1fr;
  }
  
  .book-card {
    flex-direction: column;
    text-align: center;
    padding: 30px 24px;
    gap: 24px;
  }
  
  .book-cover {
    width: 140px;
  }
  
  .book-cover-img {
    transform: none;
  }
  
  .book-card:hover .book-cover-img {
    transform: none;
  }
  
  .book-info h3 {
    font-size: 1.5em;
  }
  
  .book-actions {
    justify-content: center;
  }
  
  .book-btn {
    padding: 12px 20px;
    font-size: 0.95em;
  }
}