/* MIZOKI3 — Subpage styles (extends homepage.css) */

body.page-sub {
  opacity: 0;
  transition: opacity 0.25s ease;
}

body.page-sub.is-loaded {
  opacity: 1;
}

.nav-link.is-active {
  color: var(--accent-gold);
}

/* —— Subpage hero —— */
.sub-hero {
  position: relative;
  min-height: 65vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--nav-height) + 4rem) 0 5rem;
  overflow: hidden;
}

.sub-hero .section-bg {
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.45) contrast(1.15) saturate(0.65) hue-rotate(-8deg);
}

.sub-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.breadcrumb {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--text-tertiary);
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: var(--accent-gold);
}

.breadcrumb span {
  color: var(--accent-gold);
}

.sub-hero .accent-label {
  margin-bottom: 1rem;
}

.sub-hero h1 {
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  margin-bottom: 1.25rem;
}

.sub-hero-lead {
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 600px;
}

.section--closing-solid {
  min-height: 50vh;
  display: flex;
  align-items: center;
  padding: clamp(5rem, 10vh, 7rem) 0;
  background: var(--primary-bg);
  border-top: 1px solid var(--border);
}

.section--closing-solid .closing-inner {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}

/* —— Content sections —— */
.section--solid {
  padding: clamp(6rem, 12vh, 7.5rem) 0;
  background: var(--primary-bg);
  position: relative;
}

.section--solid.has-grain::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.5;
}

.section-head {
  max-width: 680px;
  margin-bottom: 3rem;
}

.section-head--center {
  text-align: center;
  margin-inline: auto;
}

.section-head .accent-label {
  margin-bottom: 1rem;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.section-intro {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* —— IO columns —— */
.io-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0 2.5rem;
  align-items: stretch;
}

.io-divider {
  background: linear-gradient(to bottom, transparent, var(--accent-gold), transparent);
  opacity: 0.4;
}

.io-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem;
}

.io-card h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.io-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.io-list li {
  font-size: 15px;
  color: var(--text-secondary);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
  padding-left: 1.25rem;
}

.io-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 1px;
  background: var(--accent-gold);
  opacity: 0.6;
}

.io-list li:last-child {
  border-bottom: none;
}

/* —— Cross-domain context panel —— */
.cross-panel {
  max-width: 520px;
  margin: 2.5rem auto 0;
}

.cross-panel__note {
  margin: 0.85rem 0 0;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  text-align: center;
  color: var(--text-tertiary);
  opacity: 0.5;
}

.ledger__state.is-enforced { color: var(--accent-gold); }
.ledger__state.is-sync { color: #6ea8fe; }
.ledger__state.is-pending { color: var(--text-tertiary); }

/* —— Cross-navigation —— */
.cross-nav {
  padding: 3.5rem 0;
  background: var(--secondary-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cross-nav-head {
  margin-bottom: 1.5rem;
}

.cross-nav-head .accent-label {
  margin-bottom: 0.5rem;
}

.cross-nav-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.cross-nav-card {
  background: var(--primary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.cross-nav-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-gold);
}

.cross-nav-card h4 {
  font-family: var(--serif);
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.cross-nav-card span {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

/* —— Architecture page —— */
.arch-diagram-wrap {
  background: rgba(10, 14, 26, 0.85);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem;
  margin-bottom: 3rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.arch-diagram-wrap svg {
  width: 100%;
  height: auto;
}

.subsystem-block {
  max-width: 720px;
  margin-bottom: 2rem;
}

.subsystem-block h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 1rem;
}

.subsystem-block p {
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.detail-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  margin-top: 1.5rem;
}

.detail-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.detail-list li {
  font-size: 15px;
  color: var(--text-secondary);
  padding-left: 1rem;
  border-left: 2px solid rgba(201, 168, 85, 0.35);
}

.detail-list strong {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

/* —— SRPVDAL flow —— */
.pipeline-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  align-items: stretch;
  margin-top: 2rem;
}

.pipeline-step {
  flex: 1 1 120px;
  min-width: 120px;
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.pipeline-step:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 168, 85, 0.35);
}

.pipeline-step .step-num {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.35rem;
}

.pipeline-step h4 {
  font-family: var(--serif);
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.pipeline-step p {
  font-size: 14px;
  line-height: 1.55;
}

.pipeline-connector {
  display: none;
}

/* —— DCP dimensions —— */
.dcp-dimensions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.dcp-dim {
  background: rgba(10, 14, 26, 0.85);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.dcp-dim h4 {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.dcp-dim p {
  font-size: 14px;
  line-height: 1.55;
}

/* —— Blog —— */
.blog-hero {
  min-height: 40vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 3rem) 0 3rem;
  background: var(--primary-bg);
  position: relative;
}

.blog-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
}

.blog-hero-inner {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}

.blog-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 0.75rem;
}

.blog-hero-sub {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

.blog-index {
  max-width: 840px;
  margin: 0 auto;
  padding-bottom: 5rem;
}

.blog-featured {
  display: block;
  padding: 2.25rem 2.5rem;
  margin-bottom: 3.5rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.06) 0%, transparent 55%);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.blog-featured:hover {
  border-color: var(--accent-gold);
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.1) 0%, rgba(201, 169, 98, 0.02) 55%);
  transform: translateY(-2px);
}

.blog-featured-labels {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.blog-featured-badge {
  letter-spacing: 0.12em;
}

.blog-featured h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.blog-featured:hover h2 {
  color: var(--accent-gold);
}

.blog-featured .blog-excerpt {
  margin-bottom: 1.25rem;
}

.blog-section-head {
  max-width: none;
  margin: 0 0 1.75rem;
  padding-top: 0;
  border-top: none;
}

.blog-section-head--ceo {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

.blog-section-head .accent-label {
  margin-bottom: 0.75rem;
}

.blog-section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
}

.blog-section-intro {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.65;
}

.blog-section-intro a {
  color: var(--accent-gold);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.blog-section-intro a:hover {
  border-color: var(--accent-gold);
}

.blog-list {
  max-width: none;
  margin: 0 0 2.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.blog-post-card {
  padding: 1.75rem 2rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.blog-post-card--link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.blog-post-card--link:hover {
  border-color: rgba(201, 169, 98, 0.45);
  background: rgba(201, 169, 98, 0.04);
  transform: translateY(-1px);
}

.blog-post-card h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.blog-post-card--link:hover h2 {
  color: var(--accent-gold);
}

.blog-post-card h2 a {
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.blog-post-card h2 a:hover {
  color: var(--accent-gold);
}

.blog-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-gold);
  border: 1px solid rgba(201, 169, 98, 0.35);
  padding: 0.25rem 0.6rem;
  margin-bottom: 1rem;
  border-radius: 2px;
}

.blog-card-meta {
  font-size: 13px;
  color: var(--text-tertiary);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
}

.blog-meta-sep {
  opacity: 0.5;
}

.blog-date {
  display: block;
  margin-bottom: 0.75rem;
}

.blog-excerpt {
  font-size: 16px;
  line-height: 1.65;
  margin-bottom: 1rem;
  max-width: 640px;
  color: var(--text-secondary);
}

.blog-read {
  font-size: 14px;
  color: var(--accent-gold);
  transition: color 0.3s ease;
}

.blog-read:hover {
  color: var(--accent-copper);
}

/* —— Blog article —— */
.article-page {
  padding: calc(var(--nav-height) + 3rem) 0 0;
}

.article-header {
  max-width: 720px;
  margin: 0 auto 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.article-header .breadcrumb {
  margin-bottom: 1.25rem;
}

.article-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.article-subtitle {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  max-width: 640px;
}

.article-meta {
  font-size: 13px;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding-bottom: 4rem;
}

.article-prose {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.article-prose h2 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--text-primary);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.article-prose h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
  margin: 1.75rem 0 0.75rem;
}

.article-prose p {
  margin-bottom: 1.25rem;
}

.article-prose ul,
.article-prose ol {
  margin: 0 0 1.25rem 1.25rem;
}

.article-prose li {
  margin-bottom: 0.5rem;
}

.article-prose strong {
  color: var(--text-primary);
  font-weight: 500;
}

.article-prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

.article-prose blockquote {
  border-left: 2px solid rgba(201, 168, 85, 0.45);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-prose a {
  color: var(--accent-gold);
  transition: color 0.3s ease;
}

.article-prose a:hover {
  color: var(--accent-copper);
}

.article-prose figure {
  margin: 2rem 0;
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.article-prose figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.article-prose figcaption {
  margin-top: 0.75rem;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-tertiary);
}

.article-prose .callout {
  background: rgba(201, 168, 85, 0.08);
  border: 1px solid rgba(201, 168, 85, 0.25);
  border-left: 3px solid var(--accent-gold);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  color: var(--text-secondary);
}

.article-prose .highlight-box,
.article-prose .formula-box {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.75rem 0;
  text-align: center;
}

.article-prose .formula,
.article-prose .formula-box code {
  font-family: var(--sans);
  font-size: 15px;
  color: var(--accent-gold);
  letter-spacing: 0.02em;
}

.article-prose .comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.75rem 0;
}

.article-prose .comparison-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

.article-prose .comparison-card.bad {
  border-color: rgba(184, 92, 92, 0.35);
}

.article-prose .comparison-card.good {
  border-color: rgba(201, 168, 85, 0.35);
}

.article-prose .comparison-card h4 {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
}

.article-prose .comparison-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-prose .pipeline-visual {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.75rem 0;
  overflow-x: auto;
}

.article-prose .pipeline-stages {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.article-prose .pipeline-stage {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.45rem 0.75rem;
  border-radius: 4px;
  background: rgba(201, 168, 85, 0.15);
  border: 1px solid rgba(201, 168, 85, 0.35);
  color: var(--accent-gold);
}

.article-prose .pipeline-arrow {
  color: var(--text-tertiary);
}

.article-prose .alert-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-gold);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.article-prose .alert-number {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.35rem;
}

.article-prose .alert-title {
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.article-prose .alert-subtitle {
  font-size: 15px;
  color: var(--accent-gold);
  margin-bottom: 1rem;
}

.article-prose .genius-note {
  background: rgba(201, 168, 85, 0.06);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}

.article-prose .check-list {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.article-prose .check-list li {
  position: relative;
  padding-left: 1.5rem;
}

.article-prose .check-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent-gold);
}

.article-prose .micro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.article-prose .micro .card {
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

.article-prose .micro .card strong {
  display: block;
  margin-bottom: 0.5rem;
}

.article-end {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.article-back {
  font-size: 14px;
  color: var(--accent-gold);
}

.article-back:hover {
  color: var(--accent-copper);
}

/* —— Responsive —— */
@media (min-width: 901px) {
  .pipeline-flow {
    flex-wrap: nowrap;
  }

  .pipeline-connector {
    display: flex;
    align-items: center;
    width: 24px;
    flex-shrink: 0;
    justify-content: center;
  }

  .pipeline-connector::after {
    content: "";
    width: 100%;
    height: 1px;
    background: rgba(201, 168, 85, 0.35);
  }
}

@media (max-width: 900px) {
  .io-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .io-divider {
    display: none;
  }

  .cross-nav-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }

  .cross-nav-card {
    flex: 0 0 200px;
    scroll-snap-align: start;
  }
}

@media (max-width: 640px) {
  .sub-hero {
    min-height: 55vh;
  }

  .blog-featured {
    padding: 1.75rem 1.5rem;
  }

  .blog-post-card {
    padding: 1.5rem 1.25rem;
  }

  .article-prose .comparison-grid,
  .article-prose .micro {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.page-sub {
    opacity: 1;
    transition: none;
  }
}