/* ---- Product Hero ---- */
.product-hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.product-hero::before {
  content: '';
  position: absolute;
  top: 20%;
  right: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, color-mix(in srgb, var(--product-accent) 8%, transparent) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.product-hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.product-hero-text .badge {
  margin-bottom: var(--space-xl);
}

.product-hero-text h1 {
  font-size: var(--fs-5xl);
  margin-bottom: var(--space-lg);
  color: var(--product-accent);
  line-height: 1.0;
}

.product-hero-tagline {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  max-width: 460px;
}

.product-hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.product-hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-hero-icon {
  width: 200px;
  height: 200px;
  opacity: 0.7;
}

@media (min-width: 768px) {
  .product-hero-content {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .product-hero-text h1 {
    font-size: var(--fs-6xl);
  }

  .product-hero-icon {
    width: 260px;
    height: 260px;
  }
}

/* ---- Features Grid ---- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.feature-item {
  padding: var(--space-xl);
}

.feature-icon-wrap {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--product-accent) 8%, transparent);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.feature-item h3 {
  font-size: var(--fs-base);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.feature-item p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Stagger for 6 items */
.features-grid .fade-in:nth-child(4) { transition-delay: 0ms; }
.features-grid .fade-in:nth-child(5) { transition-delay: 100ms; }
.features-grid .fade-in:nth-child(6) { transition-delay: 200ms; }

/* ---- Product Pricing (single card) ---- */
.product-pricing-section {
  padding: var(--space-4xl) 0;
}

.product-pricing-card {
  max-width: 420px;
  padding: var(--space-3xl);
}

.product-pricing-card h2 {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-md);
}

.product-pricing-desc {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.product-pricing-price {
  margin-bottom: var(--space-2xl);
}

.price-amount {
  font-family: var(--font-heading);
  font-size: var(--fs-5xl);
  font-weight: 700;
  color: var(--accent);
  display: block;
  letter-spacing: -0.03em;
}

.price-period {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.product-pricing-card .btn {
  width: 100%;
}

/* ---- Pricing Tiers Horizontal (SightReader) ---- */
.pricing-tiers-horizontal {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 900px;
}

.pricing-tier-card {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.pricing-tier-card .tier-name {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.pricing-tier-card .price-amount {
  font-size: var(--fs-3xl);
}

.pricing-tier-card .tier-detail {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-sm);
}

.pricing-tier-card.featured {
  border-color: rgba(0, 196, 180, 0.2);
}

.pricing-tier-card .btn {
  align-self: flex-start;
}

@media (min-width: 768px) {
  .pricing-tiers-horizontal {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- Hero: section-label above h1 ---- */
.product-hero-text .section-label {
  display: block;
  margin-bottom: var(--space-md);
}

/* ---- Stats Bar ---- */
.stats-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--bg-glass-border);
  border-bottom: 1px solid var(--bg-glass-border);
  padding: var(--space-3xl) 0;
}

.stats-bar-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-xl);
}

.stat-item {
  text-align: center;
  flex: 1 1 auto;
  min-width: 100px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--product-accent);
  display: block;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-xs);
}

/* ---- Modes Grid (glass-cards) ---- */
.modes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.modes-grid .glass-card h3 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.modes-grid .glass-card p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .modes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Stagger for modes 6 items */
.modes-grid .fade-in:nth-child(4) { transition-delay: 0ms; }
.modes-grid .fade-in:nth-child(5) { transition-delay: 100ms; }
.modes-grid .fade-in:nth-child(6) { transition-delay: 200ms; }

/* ---- Text Features Grid (editorial, no cards) ---- */
.text-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.text-feature {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--bg-glass-border);
}

.text-feature:last-child {
  border-bottom: none;
}

.text-feature h4 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.text-feature p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .text-features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0 var(--space-3xl);
  }

  .text-feature {
    padding: var(--space-xl) 0;
  }
}

/* ---- Instruments Grid ---- */
.instruments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-2xl);
}

.inst-family {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--product-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.inst-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.inst-group li {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 2;
}

/* ---- How It Works Steps ---- */
.how-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.step-card {
  text-align: center;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid var(--product-accent);
  border-radius: 50%;
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--product-accent);
  margin-bottom: var(--space-lg);
}

.step-card h3 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.step-card p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
  max-width: 280px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .how-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- Why Grid (glass-cards) ---- */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.why-grid .glass-card h4 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.why-grid .glass-card p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .why-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Stagger for why 6 items */
.why-grid .fade-in:nth-child(4) { transition-delay: 0ms; }
.why-grid .fade-in:nth-child(5) { transition-delay: 100ms; }
.why-grid .fade-in:nth-child(6) { transition-delay: 200ms; }

/* ---- Sounds Grid (Metronome) ---- */
.sounds-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.sound-item {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--bg-glass-border);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
}

@media (min-width: 768px) {
  .sounds-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---- Exercises Grid (EarTrain, 4x2) ---- */
.exercises-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.exercises-grid .glass-card h3 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.exercises-grid .glass-card p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .exercises-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Stagger for exercises 8 items */
.exercises-grid .fade-in:nth-child(4) { transition-delay: 0ms; }
.exercises-grid .fade-in:nth-child(5) { transition-delay: 100ms; }
.exercises-grid .fade-in:nth-child(6) { transition-delay: 200ms; }
.exercises-grid .fade-in:nth-child(7) { transition-delay: 0ms; }
.exercises-grid .fade-in:nth-child(8) { transition-delay: 100ms; }