@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* Color Variables - Constantine Algeria Inspired Palette */
:root {
  --color-bg: #FAF8F5;            /* Warm Limestone / Off-White */
  --color-bg-card: #FFFFFF;       /* Pure White for card components */
  --color-text: #2A2421;          /* Deep Canyon Umber / Charcoal */
  --color-text-muted: #5C534E;    /* Muted Slate Grey-Brown */
  --color-primary: #C85A32;       /* Terracotta / Sienna Accent */
  --color-primary-hover: #A9441E; /* Darker Terracotta */
  --color-secondary: #1E5A75;     /* Andalusian Blue Accent */
  --color-secondary-hover: #154155; /* Darker Andalusian Blue */
  --color-accent: #D49B35;        /* Ochre / Deep Gold Accent */
  --color-neutral-light: #F3EFEA; /* Soft limestone gray for structural panels */
  --color-border: #E6E2DC;        /* Warm light grey for borders */
  --color-white: #FFFFFF;
  
  --font-heading: 'Cinzel', serif;
  --font-body: 'Inter', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  --max-width: 1200px;
  --border-radius: 6px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --box-shadow: 0 4px 20px rgba(42, 36, 33, 0.05);
  --box-shadow-hover: 0 10px 30px rgba(42, 36, 33, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1.brand-title {
  font-family: var(--font-heading);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-hover);
}

/* Containers & Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-alt {
  background-color: var(--color-neutral-light);
  padding: var(--spacing-xl) 0;
}

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

.section-title-wrap {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.section-subtitle {
  font-family: var(--font-heading);
  color: var(--color-primary);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-xs);
  display: block;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding-bottom: var(--spacing-xs);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--color-primary);
}

/* Buttons */
.btn-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-neutral-light);
  color: var(--color-text);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Header & Navigation */
header {
  background-color: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

header.scroll-shadow {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  flex-direction: column;
}

.logo-main {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.08em;
  line-height: 1.1;
}

.logo-sub {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--color-primary);
  margin-top: 3px;
  font-weight: 600;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
}

.nav-link.active::after {
  width: 100%;
  height: 2px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition);
}

/* Mobile Nav Active States */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-bg);
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.05);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
    transition: var(--transition);
    z-index: 1050;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* Hero Section */
.hero {
  position: relative;
  background: radial-gradient(circle at 80% 20%, rgba(243, 239, 234, 0.8) 0%, rgba(250, 248, 245, 1) 70%);
  padding: var(--spacing-xxl) 0;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-content {
  max-width: 680px;
}

.hero-subtitle {
  font-family: var(--font-heading);
  color: var(--color-primary);
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.hero-title {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: var(--spacing-md);
  font-weight: 800;
}

.hero-title span {
  color: var(--color-primary);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  max-width: 580px;
}

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

/* Global Network Motif Graphic */
.geometric-graphic {
  width: 320px;
  height: 320px;
  position: relative;
  background-color: var(--color-neutral-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--box-shadow);
}

.geometric-graphic::before {
  content: '';
  position: absolute;
  width: 85%;
  height: 85%;
  border: 1px solid var(--color-border);
  border-radius: 50%;
}

/* Dynamic global grid lines representing meridians */
.geometric-graphic::after {
  content: '';
  position: absolute;
  width: 70%;
  height: 70%;
  border: 1px solid var(--color-secondary);
  border-left: 3px double var(--color-primary);
  border-right: 3px double var(--color-primary);
  border-radius: 50%;
  opacity: 0.5;
  animation: rotateGraphic 25s linear infinite;
}

@keyframes rotateGraphic {
  100% { transform: rotate(360deg); }
}

.graphic-core {
  width: 45%;
  height: 45%;
  background: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  box-shadow: 0 10px 20px rgba(30, 90, 117, 0.2);
  z-index: 5;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .btn-group {
    justify-content: center;
  }
  
  .hero-visual {
    margin-top: var(--spacing-lg);
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .geometric-graphic {
    width: 240px;
    height: 240px;
  }
}

/* Feature/Pillar Cards */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.pillar-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-hover);
  border-color: var(--color-primary);
}

.pillar-icon {
  width: 50px;
  height: 50px;
  border-radius: 4px;
  background-color: var(--color-neutral-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  transition: var(--transition);
}

.pillar-card:hover .pillar-icon {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.pillar-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.pillar-description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  flex-grow: 1;
}

@media (max-width: 992px) {
  .pillars-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* Dynamic Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--spacing-lg);
}

/* Service Card Components */
.service-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--color-secondary);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-hover);
  border-color: var(--color-border);
}

.service-card:hover::before {
  background-color: var(--color-primary);
  width: 6px;
}

.service-title {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.service-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.service-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-neutral-light);
}

.service-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-secondary);
  background-color: var(--color-neutral-light);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.service-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* Product Card Components */
.product-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-hover);
  border-color: var(--color-border);
}

.product-thumbnail-placeholder {
  width: 100%;
  height: 200px;
  background-color: var(--color-neutral-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.product-thumbnail-placeholder::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  animation: shine 6s infinite;
}

@keyframes shine {
  0% { left: -100%; }
  20% { left: 150%; }
  100% { left: 150%; }
}

.product-icon-brand {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-primary);
  font-weight: 700;
  opacity: 0.7;
}

.product-info {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.product-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
  line-height: 1.5;
}

.product-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: auto;
}

.product-actions .btn {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  flex: 1;
}

/* About Layout Panel */
.about-hero {
  background-color: var(--color-neutral-light);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.about-philosophy {
  padding: var(--spacing-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-primary);
}

.corridor-map-section {
  margin-top: var(--spacing-xl);
}

/* Dynamic Corridors Section */
.corridors-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.corridor-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
}

.corridor-item:hover {
  border-color: var(--color-secondary);
  background-color: rgba(30, 90, 117, 0.02);
}

.corridor-flag {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-xs);
  display: block;
}

.corridor-name {
  font-weight: 700;
  font-size: 1rem;
}

.corridor-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

@media (max-width: 992px) {
  .about-intro-grid {
    grid-template-columns: 1fr;
  }
  .corridors-list {
    grid-template-columns: 1fr;
  }
}

/* Contact Styles */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--spacing-xl);
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-detail-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
}

.contact-detail-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-heading);
}

.contact-detail-value {
  font-size: 1.05rem;
  font-weight: 500;
}

.contact-form-container {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-text);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(200, 90, 50, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.file-upload-wrapper {
  position: relative;
  display: block;
}

.file-upload-input {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.file-upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.8rem 1rem;
  border: 1px dashed var(--color-primary);
  background-color: rgba(200, 90, 50, 0.02);
  color: var(--color-primary);
  border-radius: var(--border-radius);
  text-align: center;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}

.file-upload-wrapper:hover .file-upload-btn {
  background-color: rgba(200, 90, 50, 0.05);
}

.file-name-display {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* Footer Panel */
footer {
  background-color: var(--color-text);
  color: #DDD8D3;
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
  border-top: 4px solid var(--color-primary);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  margin-bottom: var(--spacing-sm);
}

.footer-logo .logo-main {
  color: var(--color-white);
}

.footer-logo .logo-sub {
  color: var(--color-accent);
}

.footer-about {
  color: #AAA39E;
  margin-top: var(--spacing-sm);
  max-width: 340px;
}

.footer-title {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-xs);
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 1px;
  background-color: var(--color-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links a {
  color: #AAA39E;
}

.footer-links a:hover {
  color: var(--color-white);
  padding-left: 4px;
}

.footer-corridors {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-corridors p {
  color: #AAA39E;
  font-size: 0.85rem;
  line-height: 1.4;
}

.footer-bottom {
  border-top: 1px solid #3E3734;
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #AAA39E;
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* Language switcher button */
.lang-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.2s ease;
  margin-left: 15px;
}

.lang-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

@media (max-width: 768px) {
  .lang-btn {
    margin-left: 0;
    margin-top: var(--spacing-xs);
    display: inline-block;
  }
}

/* Meridiens Suite Simulator Terminal Styles */
.terminal-container {
  background-color: #0c1020;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: 'Courier New', Courier, monospace;
  padding: 10px;
  margin-top: var(--spacing-sm);
  font-size: 0.78rem;
  color: #38bdf8; /* Terminal bright blue-green */
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.8);
  height: 120px;
  overflow-y: auto;
  text-align: left;
}

.terminal-header {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 4px;
  margin-bottom: 6px;
  color: var(--color-text-muted);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.terminal-body {
  line-height: 1.4;
  word-break: break-all;
}

.app-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  margin-top: var(--spacing-sm);
  border-top: 1px dashed var(--color-border);
  padding-top: var(--spacing-xs);
}

.app-presets-wrap {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.pricing-summary-bar {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.btn-simulator-reset {
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-simulator-reset:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 2rem 0;
    justify-content: center;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-text);
    padding: 0.5rem 1.25rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-bg);
}

/* Badges */
.badge.platform { background: var(--color-secondary); color: #fff; }
.badge.agentic { background: var(--color-primary); color: #fff; }
.badge.opensource { background: var(--color-accent); color: var(--color-text); }
.badge.consulting { background: #38302D; color: #fff; }

.tag {
    display: inline-block;
    background: rgba(30, 90, 117, 0.08);
    color: var(--color-secondary);
    font-size: 0.72rem;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    font-weight: 500;
}

/* Systems Lab & Dynamic Cards Styles */
.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--box-shadow);
  height: 100%;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-hover);
  border-color: var(--color-primary);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
  line-height: 1.25;
}

.card-summary {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

.card-description {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
  flex-grow: 1;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.card-footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-sm);
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.cta-link {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.cta-link:hover {
  color: var(--color-primary-hover);
  padding-left: 5px;
}

.status-indicator {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background-color: var(--color-neutral-light);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Site Nav and Header Restructuring */
.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  width: 100%;
}

.site-nav .logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.1em;
  display: block;
}

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.site-nav .nav-links a {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
  padding: 0.25rem 0;
  transition: var(--transition);
}

.site-nav .nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

.site-nav .nav-links a:hover {
  color: var(--color-primary);
}

.site-nav .nav-links a:hover::after {
  width: 100%;
}

.site-nav .nav-links a.active {
  color: var(--color-primary);
  font-weight: 700;
}

.site-nav .nav-links a.active::after {
  width: 100%;
}

.site-nav .nav-links a.btn-cta {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
}

.site-nav .nav-links a.btn-cta::after {
  display: none;
}

.site-nav .nav-links a.btn-cta:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-white);
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .site-nav {
    flex-direction: column;
    height: auto;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-sm);
  }
  .site-nav .nav-links {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
  }
  .site-nav .nav-links a {
    width: 100%;
    text-align: center;
    padding: 0.5rem 0;
  }
  .site-nav .nav-links a.btn-cta {
    padding: 0.6rem 0;
  }
}

/* ==========================================================================
   MERIDIENS RESEARCH LAB & ADAPTIVE EPISTEMIC INTELLIGENCE (AEI) STYLES
   ========================================================================== */

:root {
  --color-academic-slate: #0b192c;
  --color-academic-navy: #1e3e62;
  --color-academic-card: #ffffff;
  --color-state-hypo: #3b82f6;
  --color-state-supported: #06b6d4;
  --color-state-stable: #10b981;
  --color-state-contested: #f59e0b;
  --color-state-silence: #64748b;
  --color-state-obsolete: #ef4444;
}

/* Academic Masthead / Hero */
.research-hero {
  background: linear-gradient(180deg, rgba(11, 25, 44, 0.04) 0%, rgba(250, 248, 245, 0) 100%);
  border-bottom: 1px solid var(--color-border);
  padding: 4rem 0 3.5rem 0;
}

.research-preheader {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-secondary);
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.25rem 0.75rem;
  background: rgba(30, 90, 117, 0.08);
  border-radius: 4px;
  border-left: 3px solid var(--color-secondary);
}

.research-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 1rem;
  font-weight: 700;
}

.research-subtitle {
  font-family: var(--font-body);
  font-size: 1.25rem;
  line-height: 1.6;
  color: #4b5563;
  max-width: 860px;
  margin-bottom: 2rem;
}

.research-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.personnel-group {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.personnel-item {
  font-size: 0.88rem;
  line-height: 1.4;
}

.personnel-role {
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 0.2rem;
}

.personnel-name {
  font-weight: 700;
  color: var(--color-text);
}

.personnel-affiliation {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.btn-academic-print {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-academic-slate);
  color: #ffffff;
  padding: 0.65rem 1.4rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-academic-slate);
  cursor: pointer;
  transition: var(--transition);
}

.btn-academic-print:hover {
  background-color: var(--color-academic-navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(11, 25, 44, 0.15);
}

/* Epistemic Thesis Callouts */
.thesis-box {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.thesis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (max-width: 768px) {
  .thesis-grid {
    grid-template-columns: 1fr;
  }
}

.contrast-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1.5rem;
}

.contrast-card.flaw {
  border-top: 3px solid #ef4444;
}

.contrast-card.solution {
  border-top: 3px solid var(--color-state-stable);
}

.contrast-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.formula-block {
  background: #111827;
  color: #38bdf8;
  font-family: 'Courier New', Courier, monospace;
  padding: 0.85rem 1.2rem;
  border-radius: 4px;
  font-size: 0.88rem;
  margin: 1rem 0;
  overflow-x: auto;
}

/* Scientific Lineage Cards */
.lineage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.lineage-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.lineage-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-secondary);
  box-shadow: var(--box-shadow-hover);
}

.publication-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  display: inline-block;
  margin-bottom: 0.75rem;
  align-self: flex-start;
}

.badge-frontiers {
  background: rgba(30, 90, 117, 0.1);
  color: var(--color-secondary);
}

.badge-thesis {
  background: rgba(200, 90, 50, 0.1);
  color: var(--color-primary);
}

.lineage-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.lineage-desc {
  font-size: 0.88rem;
  color: #4b5563;
  line-height: 1.55;
  flex-grow: 1;
  margin-bottom: 1rem;
}

.lineage-footer {
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Interactive Epistemic State Machine Widget */
.state-machine-widget {
  background: #0b1320;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 2rem;
  color: #f8fafc;
  margin: 3rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
}

.widget-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.widget-status-pill {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  font-family: monospace;
}

.scenario-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.scenario-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #cbd5e1;
  padding: 0.65rem 1.25rem;
  font-size: 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
  text-align: left;
}

.scenario-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.scenario-btn.active {
  background: var(--color-secondary);
  border-color: #38bdf8;
  color: #ffffff;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
}

/* State Graph SVG Container */
.state-graph-canvas {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
}

.state-svg {
  width: 100%;
  max-width: 820px;
  height: auto;
  overflow: visible;
}

.state-node {
  transition: all 0.3s ease;
  cursor: pointer;
}

.state-node circle {
  transition: all 0.3s ease;
}

.state-node text {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  fill: #94a3b8;
  text-anchor: middle;
  transition: all 0.3s ease;
}

.state-node.active circle {
  stroke-width: 3.5px;
  filter: drop-shadow(0 0 8px currentColor);
}

.state-node.active text {
  fill: #ffffff;
  font-weight: 700;
}

.state-link {
  stroke: rgba(255, 255, 255, 0.15);
  stroke-width: 2;
  transition: all 0.3s ease;
}

.state-link.active-link {
  stroke: #38bdf8;
  stroke-width: 3;
  stroke-dasharray: 6 3;
  animation: dash 1s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: -9;
  }
}

/* Decision Gate Output Panel */
.decision-gate-panel {
  margin-top: 1.5rem;
  background: rgba(2, 6, 23, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.decision-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.82rem;
}

.decision-action-badge {
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.25rem 0.8rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.action-proceed {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid #10b981;
}

.action-halt {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid #f59e0b;
}

.action-silence {
  background: rgba(148, 163, 184, 0.2);
  color: #cbd5e1;
  border: 1px solid #64748b;
}

.decision-log-text {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
  color: #94a3b8;
  line-height: 1.5;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.75rem;
  border-radius: 4px;
  border-left: 3px solid #38bdf8;
}

/* Formal Hypotheses & Falsification Table */
.falsification-table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.falsification-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.falsification-table th {
  background-color: var(--color-academic-slate);
  color: #ffffff;
  padding: 0.9rem 1.2rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.falsification-table th:last-child {
  border-right: none;
}

.falsification-table td {
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  line-height: 1.5;
}

.falsification-table tr:nth-child(even) {
  background-color: rgba(250, 248, 245, 0.5);
}

.falsification-table tr:last-child td {
  border-bottom: none;
}

.hypo-id {
  font-family: monospace;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.metric-tag {
  font-family: monospace;
  font-size: 0.78rem;
  background: rgba(30, 90, 117, 0.08);
  color: var(--color-secondary);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  display: inline-block;
  margin-top: 0.25rem;
}

/* Theory to Production Bridge */
.bridge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.bridge-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.bridge-primitive {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.bridge-target {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.bridge-arrow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0.5rem 0 1rem 0;
}

/* Research Leadership & Personnel Cards */
.person-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
  margin: 2.5rem 0;
}

.person-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.person-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-secondary);
  box-shadow: var(--box-shadow-hover);
}

.person-card .role-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-secondary);
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.2rem 0.6rem;
  background: rgba(30, 90, 117, 0.08);
  border-radius: 4px;
  align-self: flex-start;
}

.person-card .person-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.person-card .person-desc {
  font-size: 0.92rem;
  color: #4b5563;
  line-height: 1.65;
  margin: 0;
}

/* ==========================================================================
   PRINT OPTIMIZATION ENGINE (@media print)
   Generates a clean, publication-ready academic white-paper
   ========================================================================== */
@media print {
  @page {
    size: A4 portrait;
    margin: 1.5cm;
  }

  body {
    background: #ffffff !important;
    color: #111827 !important;
    font-size: 10.5pt !important;
    line-height: 1.5 !important;
  }

  /* Suppress non-printable elements */
  header,
  footer,
  .site-nav,
  .btn-academic-print,
  .scenario-bar,
  .btn,
  .region-selector-container,
  noscript,
  .scroll-shadow {
    display: none !important;
  }

  /* Expand containers */
  .container {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .research-hero {
    padding: 0 0 1.5rem 0 !important;
    border-bottom: 2px solid #000000 !important;
    background: none !important;
  }

  .research-title {
    font-size: 20pt !important;
    color: #000000 !important;
  }

  .research-subtitle {
    font-size: 11pt !important;
    color: #333333 !important;
  }

  .research-meta-bar {
    border-top: 1px solid #ccc !important;
    padding-top: 0.5rem !important;
  }

  /* Ensure high-contrast cards */
  .lineage-card,
  .contrast-card,
  .bridge-card,
  .person-card,
  .thesis-box {
    border: 1px solid #cccccc !important;
    box-shadow: none !important;
    page-break-inside: avoid !important;
    background: #ffffff !important;
  }

  /* State Machine print representation */
  .state-machine-widget {
    background: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #999999 !important;
    box-shadow: none !important;
    page-break-inside: avoid !important;
  }

  .widget-header {
    border-bottom: 1px solid #cccccc !important;
  }

  .widget-title {
    color: #000000 !important;
  }

  .state-graph-canvas {
    background: #f8fafc !important;
    border: 1px solid #cccccc !important;
  }

  .decision-gate-panel {
    background: #f1f5f9 !important;
    border: 1px solid #cccccc !important;
    color: #000000 !important;
  }

  .decision-log-text {
    background: #ffffff !important;
    color: #000000 !important;
    border-left: 3px solid #000000 !important;
  }

  /* Falsification table page break rules */
  .falsification-table-wrapper {
    box-shadow: none !important;
    border: 1px solid #999999 !important;
    page-break-inside: avoid !important;
  }

  .falsification-table th {
    background: #333333 !important;
    color: #ffffff !important;
  }

  .falsification-table td {
    color: #000000 !important;
    border-bottom: 1px solid #e2e8f0 !important;
  }

  /* Typography headings page breaks */
  h1, h2, h3, h4 {
    page-break-after: avoid !important;
    color: #000000 !important;
  }

  .section, .section-alt {
    padding: 1.5rem 0 !important;
  }
}