/*
 * EPOH Layout System — layout.css
 * Dark section architecture, container widths, grid system, section modifiers.
 * Evolved from reference site's layout.css — dark-first, explicit section modifiers.
 * Source: EPOH_STYLE_ANCHOR.md §5, §10
 *
 * Load order: 4th (after typography.css)
 */


/* ============================================================
   SKIP TO CONTENT (Accessibility)
   ============================================================ */

.skip-to-content {
  position: absolute;
  left: -9999px;
  top: -9999px;
  z-index: var(--z-toast);
  padding: var(--space-4) var(--space-8);
  background: var(--color-ember);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-small);
  text-decoration: none;
}

.skip-to-content:focus {
  left: var(--space-4);
  top: var(--space-4);
  outline: var(--focus-ring-width) solid var(--color-parchment);
  outline-offset: var(--focus-ring-offset);
}


/* ============================================================
   CONTAINER SYSTEM
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 3rem);
}

.container--wide {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 3rem);
}

.container--prose {
  max-width: var(--container-prose);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.container--narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}


/* ============================================================
   SECTION SYSTEM
   Unlike reference site's nth-child alternation —
   EPOH uses explicit section modifiers.
   ============================================================ */

.section {
  padding-block: var(--section-padding-desktop);
}

/* Dark sections — majority of site */
.section--dark {
  background: var(--color-obsidian);
  color: var(--color-text-primary);
}

/* Deepest dark — hero alternates, void-level sections */
.section--darker {
  background: var(--color-void);
  color: var(--color-text-primary);
}

/* Card bg — slightly lighter than obsidian */
.section--card {
  background: var(--color-midnight);
  color: var(--color-text-primary);
}

/* Light sections — sparingly, breaks rhythm intentionally */
.section--light {
  background: var(--color-parchment);
  color: var(--color-text-on-light);
}

.section--light h1,
.section--light h2,
.section--light h3,
.section--light h4 {
  color: var(--color-text-on-light);
}

/* Bordered top divider between sections */
.section--bordered-top {
  border-top: 1px solid var(--color-border-dark);
}

.section--light.section--bordered-top {
  border-top-color: var(--color-border-light);
}


/* ============================================================
   SECTION INNER ARCHITECTURE
   Every section follows this layered pattern:
   eyebrow → headline → intro → body → cta
   ============================================================ */

.section__eyebrow {
  /* Uses .eyebrow class from typography.css */
  margin-bottom: var(--space-4);
}

.section__headline {
  font-family: var(--font-display);
  font-size: var(--font-size-h2);
  color: var(--color-parchment);
  margin-bottom: var(--space-6);
  max-width: 20ch;
}

.section--light .section__headline {
  color: var(--color-text-on-light);
}

.section__intro {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: var(--color-text-secondary);
  max-width: 65ch;
  margin-bottom: var(--space-12);
}

.section--light .section__intro {
  color: var(--color-text-muted-light);
}

/* Centred variant for CTA and symmetrical sections */
.section__headline--center,
.section__intro--center {
  text-align: center;
  margin-inline: auto;
}

.section__body {
  /* Content flows naturally — grid or prose */
}

.section__cta {
  margin-top: var(--space-12);
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}

.section__cta--center {
  justify-content: center;
}

/* Soft CTA link (no button) */
.section__cta-link {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  font-weight: var(--weight-medium);
  color: var(--color-ember);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.section__cta-link:hover {
  color: var(--color-ember-light);
  gap: var(--space-3);
}

.section__cta-link::after {
  content: "→";
}


/* ============================================================
   GRID SYSTEM
   ============================================================ */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

/* Auto-fill grid for cards */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-8);
}

/* Asymmetric: 55/45 split — prose + diagram */
.grid-prose-diagram {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

/* Asymmetric: 40/60 — contact methods + form */
.grid-contact {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-16);
}


/* ============================================================
   HERO SECTION
   ============================================================ */

.hero {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--color-void);
  position: relative;
  overflow: hidden;
  padding-block: var(--space-32);
  padding-inline: clamp(1rem, 4vw, 3rem);
}

/* Ember glow — bottom left */
.hero::before {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 60%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(196, 98, 45, 0.18) 0%, transparent 70%);
  pointer-events: none;
  z-index: var(--z-base);
}

/* Secondary gold glow — top right */
.hero::after {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 40%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(184, 147, 90, 0.10) 0%, transparent 70%);
  pointer-events: none;
  z-index: var(--z-base);
}

.hero__container {
  max-width: var(--container-max);
  width: 100%;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: var(--z-above);
}

.hero__content {
  max-width: 640px;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--font-size-phase);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-ember);
  display: block;
  margin-bottom: var(--space-6);
}

.hero__headline {
  font-family: var(--font-display);
  font-size: var(--font-size-hero);
  font-weight: var(--weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-parchment);
  margin-bottom: var(--space-6);
}

.hero__subheadline {
  font-family: var(--font-body);
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: rgba(244, 240, 232, 0.65);
  margin-bottom: var(--space-8);
  max-width: 55ch;
}

.hero__trust {
  font-family: var(--font-body);
  font-size: var(--font-size-small);
  color: var(--color-stone);
  margin-top: var(--space-8);
  letter-spacing: var(--tracking-wide);
}

.hero__cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
  margin-top: var(--space-10);
}

.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__visual svg,
.hero__visual img {
  width: 100%;
  height: auto;
  max-width: 540px;
}

/* Page hero — smaller than home, no full-viewport height */
.hero--page {
  min-height: auto;
  padding-block: clamp(5rem, 10vw, 8rem);
  border-bottom: 1px solid var(--color-border-dark);
}

.hero--page .hero__container {
  grid-template-columns: 1fr;
  max-width: var(--container-wide);
}

.hero--page .hero__headline {
  font-size: var(--font-size-h1);
}


/* ============================================================
   FILTERING GRID (For / Not For sections)
   Carried from reference site, evolved for EPOH palette
   ============================================================ */

.filtering-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  max-width: var(--container-wide);
  margin-inline: auto;
}

.filtering-card {
  background: var(--color-midnight);
  border: 1px solid var(--color-border-dark);
  padding: var(--space-10);
  border-radius: var(--radius-small);
}

.filtering-card--positive {
  border-left: 3px solid var(--color-sage);
}

.filtering-card--negative {
  border-left: 3px solid var(--color-ember);
}

.filtering-card__title {
  font-family: var(--font-display);
  font-size: var(--font-size-h3);
  color: var(--color-parchment);
  margin-bottom: var(--space-6);
}

.filtering-card--positive .filtering-card__title {
  color: var(--color-sage-light);
}

.filtering-card--negative .filtering-card__title {
  color: var(--color-ember-light);
}


/* ============================================================
   SITE FOOTER LAYOUT
   ============================================================ */

.site-footer {
  background: var(--color-void);
  color: var(--color-text-secondary);
  padding-top: var(--space-20);
  padding-bottom: var(--space-8);
  border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.footer-bottom {
  border-top: 1px solid var(--color-border-dark);
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-disclaimer {
  font-size: var(--font-size-small);
  line-height: var(--line-height-body);
  color: var(--color-text-secondary);
  max-width: 75ch;
}

.footer-disclaimer strong {
  color: var(--color-parchment);
  font-weight: var(--weight-semibold);
}

.footer-legal {
  font-size: var(--font-size-xs);
  color: var(--color-ash);
  line-height: var(--line-height-body);
}

.footer-brand p {
  font-size: var(--font-size-small);
  line-height: var(--line-height-body);
  color: var(--color-text-secondary);
  max-width: 30ch;
  margin-bottom: var(--space-3);
}

.footer-clinic-note {
  color: var(--color-ash) !important;
  font-size: var(--font-size-xs) !important;
}

.footer-nav h4 {
  font-family: var(--font-body);
  font-size: var(--font-size-small);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav a {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-parchment);
}

.footer-contact h4 {
  font-family: var(--font-body);
  font-size: var(--font-size-small);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
}

.footer-contact-link {
  display: block;
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

.footer-contact-link:hover {
  color: var(--color-parchment);
}

.footer-whatsapp {
  color: var(--color-whatsapp) !important;
}

.footer-whatsapp:hover {
  color: var(--color-whatsapp-hover) !important;
}


/* ============================================================
   ARTICLE PAGE LAYOUT
   Evolved from reference site's blog.css article layout
   ============================================================ */

.article-main {
  background: var(--color-obsidian);
  padding-bottom: var(--space-20);
}

.article-header {
  background: var(--color-void);
  border-bottom: 1px solid var(--color-border-dark);
  padding-block: clamp(4rem, 8vw, 7rem);
}

.article-category {
  font-family: var(--font-mono);
  font-size: var(--font-size-phase);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-ember);
  display: block;
  margin-bottom: var(--space-4);
}

.article-title {
  font-family: var(--font-display);
  font-size: var(--font-size-h1);
  color: var(--color-parchment);
  line-height: var(--line-height-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-6);
  max-width: 20ch;
}

.article-meta {
  font-size: var(--font-size-small);
  color: var(--color-ash);
  letter-spacing: var(--tracking-wide);
}

.article-content {
  padding-block: var(--space-16);
}

.related-articles {
  background: var(--color-midnight);
  border-top: 1px solid var(--color-border-dark);
  padding-block: var(--space-12);
}

.related-articles h2 {
  font-family: var(--font-display);
  font-size: var(--font-size-h3);
  color: var(--color-parchment);
  margin-bottom: var(--space-8);
}

.related-articles-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.related-articles-list a {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding-left: var(--space-6);
  position: relative;
}

.related-articles-list a::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-ember);
  transition: transform var(--transition-fast);
}

.related-articles-list a:hover {
  color: var(--color-parchment);
}

.related-articles-list a:hover::before {
  transform: translateX(4px);
}

/* Article CTA section */
.article-cta {
  padding-block: var(--space-20);
  text-align: center;
}

.article-cta h2 {
  font-size: var(--font-size-h2);
  margin-bottom: var(--space-6);
  max-width: 24ch;
  margin-inline: auto;
}

.article-cta p {
  font-size: var(--font-size-body-lg);
  max-width: 55ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.article-cta .cta-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}


/* ============================================================
   BLOG INDEX LAYOUT
   ============================================================ */

.blog-intro-section {
  background: var(--color-void);
  padding-block: clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--color-border-dark);
}

.blog-title {
  font-family: var(--font-display);
  font-size: var(--font-size-h1);
  color: var(--color-parchment);
  margin-bottom: var(--space-6);
  max-width: 20ch;
}

.blog-subtitle {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: var(--color-text-secondary);
  max-width: 65ch;
  margin-bottom: var(--space-4);
}

.blog-note {
  font-size: var(--font-size-small);
  color: var(--color-ash);
  font-style: italic;
  max-width: 60ch;
}

.blog-tier {
  padding-block: var(--space-20);
  border-bottom: 1px solid var(--color-border-dark);
}

.blog-tier:last-of-type {
  border-bottom: none;
}

.tier-header {
  margin-bottom: var(--space-12);
}

.tier-label {
  font-family: var(--font-mono);
  font-size: var(--font-size-phase);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-gold);
  display: block;
  margin-bottom: var(--space-4);
}

.tier-title {
  font-family: var(--font-display);
  font-size: var(--font-size-h2);
  color: var(--color-parchment);
  margin-bottom: var(--space-4);
}

.tier-description {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  max-width: 60ch;
}


/* ============================================================
   RESPONSIVE LAYOUT ADJUSTMENTS
   ============================================================ */

/* Tablet */
@media (max-width: 1023px) {
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }

  .hero__cta {
    justify-content: center;
  }

  .hero__subheadline {
    margin-inline: auto;
  }

  .hero__visual {
    order: -1;
  }

  .hero__visual svg,
  .hero__visual img {
    max-width: 400px;
    margin-inline: auto;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-prose-diagram {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .grid-contact {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .filtering-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
  }
}

/* Mobile */
@media (max-width: 767px) {
  .hero {
    min-height: 85vh;
    padding-block: var(--space-20);
  }

  .hero__container {
    text-align: left;
  }

  .hero__cta {
    justify-content: flex-start;
    flex-direction: column;
  }

  .hero__cta .btn {
    width: 100%;
    justify-content: center;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .section__cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .section--light .section__cta,
  .section__cta--center {
    align-items: center;
  }

  .article-cta .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .article-cta .cta-buttons .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Small mobile */
@media (max-width: 479px) {
  .hero {
    min-height: 90vh;
  }

  .filtering-card {
    padding: var(--space-6);
  }
}