/* ==========================================================================
   Artilora — Recovered Visual Design System
   Matches historical visual reference:
   - Strong, mixed-case serif headings (Georgia / system serif)
   - Highly legible reading text (-apple-system, Segoe UI, sans-serif)
   - Warm Kerala Ivory & Natural Stone surfaces
   - Intentional dramatic dark Loralea section
   - Compact header and balanced navigation
   ========================================================================== */

@font-face {
  font-family: 'Cinzel';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url('/fonts/cinzel.woff2') format('woff2');
}

@font-face {
  font-family: 'Comfortaa';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('/fonts/comfortaa.woff2') format('woff2');
}

:root {
  /* Warm Ivory & Natural Stone Palette */
  --bg-ivory: #FAF8F5;
  --bg-stone: #F3EFEA;
  --bg-parchment: #EBE5DC;
  --bg-card: #FFFFFF;

  /* Intentional Dramatic Dark Accents */
  --bg-dark: #100E0C;
  --bg-dark-surface: #181513;
  --bg-dark-card: #201C19;

  /* Text & Inks */
  --text-primary: #1C1917;
  --text-secondary: #44403C;
  --text-muted: #57534E;
  --text-light: #FAF8F5;
  --text-light-muted: rgba(250, 248, 245, 0.78);

  /* Natural Earth Accents */
  --accent-earth: #7F5539;
  --accent-terracotta: #B08968;
  --accent-gold: #D4A373;
  --accent-bronze: #9C6644;
  --accent-deep-earth: #5C3818;

  /* Borders */
  --border-subtle: #E8E2D9;
  --border-stone: #D6CCC2;
  --border-dark: rgba(212, 163, 115, 0.35);
  --border-dark-subtle: rgba(255, 255, 255, 0.12);

  /* Typography Stack: Georgia / serif provides the authentic mixed-case serif seen in reference screenshots */
  --font-heading: Georgia, 'Cambria', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Transitions */
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-ivory);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-ivory);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--text-primary);
  color: var(--bg-ivory);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 4px;
  z-index: 10000;
  transition: top var(--transition-normal);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--accent-earth);
}

*:focus-visible {
  outline: 2px solid var(--accent-earth);
  outline-offset: 3px;
}

/* Typography Hierarchy - Strong mixed-case serif headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
  color: inherit;
  line-height: 1.25;
  font-weight: normal;
  text-transform: none; /* Preserves natural mixed case */
}

p {
  color: inherit;
  line-height: 1.7;
}

/* Layout Containers */
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  width: 100%;
}

.container-narrow {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  width: 100%;
}

/* Navigation Header */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(250, 248, 245, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 36px;
  height: 36px;
  max-width: 36px;
  max-height: 36px;
  object-fit: contain;
  display: block;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-primary);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-normal);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-deep-earth);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-deep-earth);
  border-radius: 1px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
}

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-ivory);
  gap: 0.75rem;
}

.nav-mobile-menu.open {
  display: flex;
}

.nav-mobile-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.nav-mobile-link.active {
  color: var(--accent-deep-earth);
}

/* Badges & Small Uppercase Labels */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  border: 1px solid var(--border-stone);
  background-color: var(--bg-ivory);
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  font-weight: 600;
}

.badge-dark {
  border-color: var(--border-dark);
  background-color: var(--bg-dark-surface);
  color: var(--accent-gold);
}

.bullet-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-earth);
  display: inline-block;
}

.bullet-dot-gold {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-gold);
  display: inline-block;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--text-primary);
  color: var(--bg-ivory);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  border: 1px solid var(--text-primary);
  box-shadow: 0 4px 12px rgba(28, 25, 23, 0.08);
  transition: all var(--transition-normal);
  text-decoration: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--accent-deep-earth);
  border-color: var(--accent-deep-earth);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(92, 56, 24, 0.2);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  border: 1px solid var(--border-stone);
  transition: all var(--transition-normal);
  text-decoration: none;
  cursor: pointer;
}

.btn-outline:hover {
  background-color: var(--bg-stone);
  border-color: var(--accent-earth);
  color: var(--accent-deep-earth);
  transform: translateY(-2px);
}

.btn-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--text-light);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  border: 1px solid var(--border-dark);
  transition: all var(--transition-normal);
  text-decoration: none;
  cursor: pointer;
}

.btn-dark:hover {
  background-color: rgba(212, 163, 115, 0.15);
  border-color: var(--accent-gold);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* Sections */
.section {
  padding-top: 4.5rem;
  padding-bottom: 4.5rem;
  position: relative;
}

.section-hero {
  padding-top: 3.5rem;
  padding-bottom: 4.5rem;
  min-height: 75vh;
  display: flex;
  align-items: center;
}

.section-dark {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-top: 1px solid #292524;
  border-bottom: 1px solid #292524;
}

.section-stone {
  background-color: var(--bg-stone);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 900px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: var(--accent-terracotta);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(127, 85, 57, 0.08);
}

.card-img-wrap {
  background-color: var(--bg-ivory);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 250px;
}

.card-img {
  max-height: 200px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.card:hover .card-img {
  transform: scale(1.04);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.card-body {

  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: 0.85rem;
}

.card-title {
  font-size: 1.35rem;
  font-weight: normal;
  color: var(--text-primary);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-deep-earth);
  text-decoration: none;
  margin-top: 0.75rem;
}

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

/* Feature Container */
.feature-frame {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 2.25rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.feature-img {
  width: 100%;
  max-width: 480px;
  height: auto;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 8px;
}

/* Editorial Dark Card */
.dark-card {
  background-color: var(--bg-dark-surface);
  border: 1px solid var(--border-dark);
  border-radius: 14px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: left;
}

/* Breadcrumbs */
.breadcrumb-nav {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-ivory);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  list-style: none;
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb-link:hover {
  color: var(--accent-deep-earth);
}

.breadcrumb-sep {
  color: var(--border-stone);
}

.breadcrumb-current {
  color: var(--accent-deep-earth);
  font-weight: 600;
}

/* Native Reading Disclosure */
.reading-disclosure {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-dark-subtle);
  padding-top: 1.25rem;
}

.reading-summary {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
  cursor: pointer;
  padding: 0.5rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.reading-summary:hover {
  color: #FFFFFF;
}

.reading-content {
  margin-top: 1.25rem;
  padding: 1.5rem;
  background-color: rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  border-left: 2px solid var(--accent-gold);
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(250, 248, 245, 0.9);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Nine Arteries Teaser Grid (Home) */
.arteries-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .arteries-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.artery-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.25rem 1rem;
  text-align: center;
  transition: all var(--transition-normal);
}

.artery-card:hover {
  border-color: var(--accent-terracotta);
  transform: translateY(-2px);
}

.artery-num {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-earth);
  letter-spacing: 0.1em;
}

.artery-title {
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

/* Detailed Artery Grid (Atelier Page) */
.arteries-detailed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .arteries-detailed-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .arteries-detailed-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.artery-card-detailed {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.75rem 1.5rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
}

.artery-card-detailed:hover {
  border-color: var(--accent-earth);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.artery-card-detailed .artery-num {
  font-size: 0.75rem;
}

.artery-card-detailed .artery-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.artery-disclosure {
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
}

.artery-summary {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-deep-earth);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  padding: 0.35rem 0;
  transition: color var(--transition-fast);
}

.artery-summary:hover {
  color: var(--accent-terracotta);
}

.artery-summary:focus-visible {
  outline: 2px solid var(--accent-earth);
  outline-offset: 2px;
}

.artery-disclosure[open] .disclosure-arrow {
  transform: rotate(180deg);
}

.artery-content {
  margin-top: 0.75rem;
  padding: 0.9rem 1rem;
  background-color: var(--bg-stone);
  border-left: 2px solid var(--accent-earth);
  border-radius: 4px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.artery-content p {
  margin: 0;
}

/* Site Footer */
.site-footer {
  background-color: var(--bg-stone);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2.5rem;
  margin-top: auto;
}

.footer-badge-wrap {
  text-align: center;
  margin-bottom: 3rem;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1.5rem;
  border-radius: 9999px;
  border: 1px solid var(--border-stone);
  background-color: var(--bg-ivory);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
  }
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-heading {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-deep-earth);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--transition-normal);
}

.footer-nav a:hover {
  color: var(--accent-deep-earth);
}

.footer-bottom {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* Reduced Motion Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }
  .btn-primary, .btn-outline, .btn-dark {
    width: 100%;
  }
  .dark-card {
    padding: 1.5rem;
  }
  .card-img-wrap {
    min-height: 200px;
    padding: 1.5rem;
  }
}