/* === Product page styles === */

.back-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--mono-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 3rem;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--signal);
}

.product-hero {
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(3rem, 5vw, 4rem);
  background: var(--paper-warm);
  border-bottom: 1px solid var(--rule);
}

.product-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.product-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  font-weight: 600;
}

.product-title {
  font-family: 'Fraunces', serif;
  font-variation-settings: 'opsz' 144;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.product-title em {
  font-style: italic;
  font-weight: 500;
  color: var(--signal);
}

.product-headline {
  font-family: 'Fraunces', serif;
  font-variation-settings: 'opsz' 36;
  font-size: var(--display-md);
  font-weight: 400;
  font-style: italic;
  line-height: 1.2;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
  max-width: 36ch;
}

.product-lead {
  font-size: var(--body-lg);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 60ch;
}

.product-content {
  padding: var(--space-section) 0;
  background: var(--paper);
}

.product-content .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 4rem;
}

@media (max-width: 880px) {
  .product-content .section-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.product-prose h2 {
  font-family: 'Fraunces', serif;
  font-variation-settings: 'opsz' 36;
  font-size: 1.875rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  color: var(--ink);
}

.product-prose h2:first-child {
  margin-top: 0;
}

.product-prose p {
  font-size: var(--body-lg);
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}

.product-prose p strong {
  color: var(--ink);
  font-weight: 500;
}

.product-prose .emphasis-block {
  font-family: 'Fraunces', serif;
  font-variation-settings: 'opsz' 24;
  font-size: var(--display-sm);
  font-weight: 400;
  font-style: italic;
  line-height: 1.4;
  color: var(--ink);
  border-left: 3px solid var(--signal);
  padding-left: 1.5rem;
  margin: 2.5rem 0;
}

.product-prose ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.product-prose ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.product-prose ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--signal);
  font-weight: 600;
}

.product-prose ul li strong {
  color: var(--ink);
  font-weight: 600;
}

.product-prose .modes-list {
  margin: 2rem 0;
}

.product-prose .modes-list li {
  margin-bottom: 1.25rem;
  padding-left: 0;
}

.product-prose .modes-list li::before {
  display: none;
}

.product-prose .modes-list li strong {
  display: block;
  font-family: 'Fraunces', serif;
  font-variation-settings: 'opsz' 24;
  font-size: 1.25rem;
  color: var(--signal);
  font-style: italic;
  font-weight: 500;
  margin-bottom: 0.375rem;
}

.product-sidebar {
  position: sticky;
  top: 6rem;
  align-self: start;
  border-left: 1px solid var(--rule);
  padding-left: 2rem;
}

@media (max-width: 880px) {
  .product-sidebar {
    position: static;
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--rule);
    padding-top: 2rem;
  }
}

.sidebar-block {
  margin-bottom: 2.5rem;
}

.sidebar-block:last-child {
  margin-bottom: 0;
}

.sidebar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 1rem;
  font-weight: 600;
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  font-size: var(--body-sm);
  line-height: 1.55;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
  padding-left: 1.25rem;
  position: relative;
}

.sidebar-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--signal);
  font-size: 0.875rem;
  top: 0.125rem;
}

.sidebar-list li strong {
  color: var(--ink);
  font-weight: 600;
}

.sidebar-text {
  font-size: var(--body-sm);
  line-height: 1.55;
  color: var(--ink-soft);
}

.product-cta-section {
  padding: var(--space-block) 0;
  background: var(--ink);
  color: var(--paper);
}

.product-cta-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 0 2rem;
}

.product-cta-title {
  font-family: 'Fraunces', serif;
  font-variation-settings: 'opsz' 72;
  font-size: var(--display-md);
  font-weight: 400;
  font-style: italic;
  line-height: 1.1;
  color: var(--paper);
  margin-bottom: 2rem;
}

.product-cta-section .contact-cta {
  background: var(--paper);
  color: var(--signal);
  border-color: var(--paper);
}

.product-cta-section .contact-cta:hover {
  background: var(--signal);
  color: var(--paper);
  border-color: var(--signal);
}