/* 
   ==========================================================================
   NEUROAXIS™ GLOBAL DESIGN SYSTEM
   Brand Identity: Neurogenesis Solutions
   Colors: 60% Premium Light (#FBF9F6), 30% Structural (#2C2523, #8D746A), 10% Accent (#5A1916)
   ========================================================================== 
*/

/* --- CSS Variables & Design Tokens --- */
:root {
  --color-bg-primary: #FBF9F6;       /* Premium Light Background */
  --color-text-main: #2C2523;        /* Deep Charcoal Text & Body */
  --color-accent: #5A1916;           /* Primary Accent Burgundy (Brand Anchor) */
  --color-accent-hover: #7E2622;     /* Lighter burgundy for hover */
  --color-structural: #8D746A;       /* Secondary Structural Tone (Taupe) */
  --color-border: #E5DFD9;           /* Muted Layout Border / Gray */
  --color-white: #FFFFFF;
  --color-light-accent-bg: #F4EFEB;  /* Soft warm accent bg */

  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;

  --max-width-content: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

/* --- Grid Blueprint Background (Engineering Aesthetic) --- */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(to right, var(--color-border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-border) 1px, transparent 1px);
  background-size: 100px 100px;
  opacity: 0.15;
  pointer-events: none;
  z-index: -100;
}

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

h1 {
  font-family: var(--font-sans);
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
}

h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-sm);
}

/* For editorial headers invoking consulting authority */
.editorial-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-style: italic;
  color: var(--color-text-main);
}

h3 {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  margin-bottom: var(--spacing-xs);
}

p {
  font-size: 1.05rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-main);
  opacity: 0.9;
}

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

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

.text-muted {
  color: var(--color-structural);
}

.text-accent {
  color: var(--color-accent);
}

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

.section {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.grid-cols-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  align-items: center;
}

.grid-cols-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

/* --- Header / Navigation --- */
.header {
  background-color: rgba(251, 249, 246, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo-img {
  height: 48px;
  width: auto;
}

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

.nav-link {
  color: var(--color-text-main);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: var(--transition-smooth);
}

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

.nav-link.active {
  color: var(--color-accent);
  font-weight: 600;
}

/* Mobile menu toggle */
.menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-btn span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-text-main);
  margin: 5px 0;
  transition: var(--transition-smooth);
}

/* --- Buttons & Action Elements --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(90, 25, 22, 0.15);
}

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

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-light-accent-bg);
  transform: translateY(-2px);
}

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

/* --- Hero Section --- */
.hero {
  padding: var(--spacing-lg) 0;
  background: radial-gradient(circle at 80% 20%, var(--color-light-accent-bg) 0%, transparent 60%);
}

.hero-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 0.3rem 0.8rem;
  margin-bottom: var(--spacing-sm);
  border-radius: 50px;
  letter-spacing: 0.05em;
}

.hero h1 {
  margin-bottom: var(--spacing-sm);
}

.hero-lead {
  font-size: 1.25rem;
  color: var(--color-text-main);
  opacity: 0.85;
  margin-bottom: var(--spacing-md);
  max-width: 600px;
}

/* Animated NeuroAxis engineering lifecycle */
.engineering-flow {
  position: relative;
  min-height: 570px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background-color: rgba(255, 255, 255, 0.9);
  background-image:
    linear-gradient(rgba(229, 223, 217, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229, 223, 217, 0.55) 1px, transparent 1px);
  background-size: 42px 42px;
  box-shadow: 0 24px 60px rgba(44, 37, 35, 0.1);
  isolation: isolate;
}

.engineering-flow::before {
  content: "";
  position: absolute;
  inset: 18% 19%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(90, 25, 22, 0.12), rgba(90, 25, 22, 0) 68%);
}

.flow-eyebrow {
  position: absolute;
  top: 1rem;
  left: 1.2rem;
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.flow-axis {
  position: absolute;
  top: 8%;
  bottom: 12%;
  left: 50%;
  width: 3px;
  transform: translateX(-50%);
  border-radius: 3px;
  background: linear-gradient(var(--color-border), var(--color-accent) 25%, var(--color-accent) 75%, #376b5b);
}

.flow-axis::before,
.flow-axis::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 11px;
  height: 11px;
  transform: translateX(-50%);
  border: 2px solid var(--color-white);
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-border);
}

.flow-axis::before { top: 0; }
.flow-axis::after { bottom: 0; background: #376b5b; }

.flow-signal {
  position: absolute;
  top: 0;
  left: 50%;
  width: 13px;
  height: 13px;
  transform: translate(-50%, -50%);
  border: 3px solid var(--color-white);
  border-radius: 50%;
  background: #c89b54;
  box-shadow: 0 0 0 5px rgba(200, 155, 84, 0.2), 0 0 18px rgba(90, 25, 22, 0.45);
  animation: flowSignal 7.5s ease-in-out infinite;
}

.flow-card {
  position: absolute;
  width: 40%;
  min-height: 104px;
  padding: 1rem 1rem 0.9rem 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 26px rgba(44, 37, 35, 0.07);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  animation: flowCardPulse 7.5s ease-in-out infinite;
}

.flow-card::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 13%;
  height: 1px;
  background: var(--color-border);
}

.flow-requirements::after,
.flow-review::after,
.flow-fat::after { right: -13%; }

.flow-compliance::after,
.flow-validation::after { left: -13%; }

.flow-card:hover {
  z-index: 5;
  transform: translateY(-4px);
  border-color: rgba(90, 25, 22, 0.45);
  box-shadow: 0 16px 32px rgba(44, 37, 35, 0.12);
}

.flow-card h3 {
  margin: 0 0 0.3rem;
  padding-right: 1.7rem;
  font-size: 1rem;
}

.flow-card p {
  margin: 0;
  color: var(--color-structural);
  font-size: 0.79rem;
  line-height: 1.45;
}

.flow-step {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  color: rgba(90, 25, 22, 0.45);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.flow-requirements { top: 12%; left: 5%; animation-delay: 0s; }
.flow-compliance { top: 24%; right: 5%; animation-delay: 1.5s; }
.flow-review { top: 43%; left: 5%; animation-delay: 3s; }
.flow-validation { top: 57%; right: 5%; animation-delay: 4.5s; }
.flow-fat { top: 73%; left: 5%; animation-delay: 6s; }

.flow-core {
  position: absolute;
  top: 47%;
  left: 50%;
  z-index: 4;
  display: flex;
  width: 145px;
  height: 145px;
  padding: 1.15rem;
  transform: translate(-50%, -50%);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(90, 25, 22, 0.25);
  border-radius: 50%;
  background: rgba(251, 249, 246, 0.96);
  box-shadow: 0 14px 35px rgba(44, 37, 35, 0.14);
  text-align: center;
}

.flow-core img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin-bottom: 0.2rem;
}

.flow-core strong {
  color: var(--color-accent);
  font-size: 0.86rem;
  line-height: 1.1;
}

.flow-core > span:not(.core-ring) {
  margin-top: 0.2rem;
  color: var(--color-structural);
  font-size: 0.64rem;
  font-weight: 700;
  line-height: 1.2;
}

.core-ring {
  position: absolute;
  inset: -10px;
  border: 1px dashed rgba(90, 25, 22, 0.32);
  border-radius: 50%;
  animation: coreRotate 18s linear infinite;
}

.flow-outcome {
  position: absolute;
  right: 1rem;
  bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-structural);
  font-size: 0.68rem;
  font-weight: 700;
}

.outcome-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #376b5b;
  box-shadow: 0 0 0 4px rgba(55, 107, 91, 0.12);
}

@keyframes flowSignal {
  0%, 8% { top: 0; }
  20% { top: 18%; }
  36% { top: 38%; }
  52% { top: 56%; }
  68% { top: 75%; }
  84%, 100% { top: 100%; }
}

@keyframes flowCardPulse {
  0%, 16%, 100% {
    border-color: var(--color-border);
    box-shadow: 0 10px 26px rgba(44, 37, 35, 0.07);
  }
  8% {
    border-color: rgba(90, 25, 22, 0.55);
    box-shadow: 0 13px 32px rgba(90, 25, 22, 0.15);
  }
}

@keyframes coreRotate {
  to { transform: rotate(360deg); }
}

/* Central Spine visual graphic */
.spine-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  min-height: 400px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: 0 4px 20px rgba(44, 37, 35, 0.03);
}

.spine-axis {
  position: absolute;
  top: 10%;
  bottom: 10%;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-border) 0%, var(--color-accent) 50%, var(--color-border) 100%);
  z-index: 1;
}

.spine-node {
  position: relative;
  z-index: 2;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 0.6rem 1.2rem;
  margin: 0.8rem 0;
  width: 280px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 2px 8px rgba(44, 37, 35, 0.02);
  transition: var(--transition-smooth);
}

.spine-node::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-white);
  z-index: -1;
}

.spine-node:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(90, 25, 22, 0.08);
  transform: scale(1.03);
}

/* --- Card Styles (Design Grid Blueprint) --- */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-md);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(44, 37, 35, 0.05);
}

.card-num {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-border);
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}

.card h3 {
  margin-bottom: 0.8rem;
  font-size: 1.25rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-main);
  opacity: 0.8;
  margin-bottom: 0;
}

/* --- Problem / Solution (Before & After) --- */
.before-after-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.pane-before {
  border-left: 3px solid var(--color-structural);
  padding-left: var(--spacing-sm);
}

.pane-after {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--spacing-sm);
  background-color: var(--color-light-accent-bg);
  padding: var(--spacing-sm);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.pane-title {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

/* --- Product Modules Interactive Area --- */
.module-selector {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}

.module-tab {
  background: none;
  border: 1px solid transparent;
  color: var(--color-structural);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  border-radius: var(--border-radius-sm);
}

.module-tab:hover {
  color: var(--color-text-main);
  background-color: var(--color-light-accent-bg);
}

.module-tab.active {
  color: var(--color-accent);
  border-color: var(--color-border);
  background-color: var(--color-white);
  border-bottom-color: transparent;
  position: relative;
  top: 1px;
}

.module-content-pane {
  display: none;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  animation: fadeIn 0.4s ease;
}

.module-content-pane.active {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-md);
}

.module-spec-card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
}

.module-spec-item {
  margin-bottom: var(--spacing-sm);
}

.module-spec-item:last-child {
  margin-bottom: 0;
}

.module-spec-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--color-structural);
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.module-spec-value {
  font-weight: 600;
  font-size: 0.95rem;
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg) auto;
}

.section-header h2 {
  margin-bottom: var(--spacing-xs);
}

.section-header p {
  font-size: 1.15rem;
  color: var(--color-structural);
}

/* --- Segment Dual Path Section --- */
.segment-box {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.segment-box:hover {
  border-color: var(--color-accent);
}

.segment-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-sm);
  background-color: var(--color-light-accent-bg);
  color: var(--color-accent);
}

.segment-features {
  list-style: none;
  margin: var(--spacing-sm) 0 var(--spacing-md) 0;
}

.segment-features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
}

.segment-features li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* --- Timeline Graphic (Pilot Model) --- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: var(--spacing-md) auto;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 5px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  top: 5px;
  left: -2rem;
  width: 12px;
  height: 12px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg-primary);
}

.timeline-content h3 {
  font-size: 1.15rem;
  margin-bottom: 0.3rem;
}

/* --- Founder / Story Spotlight --- */
.founder-profile {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--spacing-md);
  align-items: center;
}

.founder-img-container {
  border: 1px solid var(--color-border);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  background-color: var(--color-white);
  box-shadow: 0 4px 12px rgba(44, 37, 35, 0.02);
}

.founder-img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
  display: block;
}

.founder-bio h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-style: italic;
  margin-bottom: var(--spacing-xs);
}

.founder-credentials {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-sm);
}

.credential-badge {
  background-color: var(--color-light-accent-bg);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--border-radius-sm);
  text-transform: uppercase;
}

/* --- Forms & Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-md);
}

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

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--color-text-main);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.8rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-text-main);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-smooth);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(90, 25, 22, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

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

.contact-info-item {
  margin-bottom: var(--spacing-md);
}

.contact-info-item:last-child {
  margin-bottom: 0;
}

.contact-info-title {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-structural);
  margin-bottom: 0.3rem;
  letter-spacing: 0.05em;
}

.contact-info-detail {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
}

/* --- Footer --- */
.footer {
  background-color: var(--color-text-main);
  color: var(--color-bg-primary);
  padding: var(--spacing-lg) 0 var(--spacing-md) 0;
  border-top: 1px solid var(--color-accent);
}

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

.footer h4 {
  color: var(--color-bg-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.footer p {
  color: var(--color-border);
  opacity: 0.8;
  font-size: 0.95rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-border);
  opacity: 0.8;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--color-bg-primary);
  opacity: 1;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(229, 223, 217, 0.1);
  padding-top: var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--color-border);
  opacity: 0.7;
}

/* --- Animations --- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1.5fr 1fr;
  }
  
  .founder-profile {
    grid-template-columns: 1fr;
  }
  
  .founder-img-container {
    max-width: 320px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-md) 0;
  }
  
  .grid-cols-2, .grid-cols-3, .footer-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .header-inner {
    height: 70px;
  }
  
  /* Responsive Navigation */
  .menu-btn {
    display: block;
  }
  
  .nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-sm);
    box-shadow: 0 8px 16px rgba(44, 37, 35, 0.05);
  }
  
  .nav.open {
    display: flex;
  }
  
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 0.8rem 0;
  }
  
  .spine-node {
    width: 100%;
    max-width: 300px;
  }
  
  .before-after-grid {
    grid-template-columns: 1fr;
  }
  
  .module-content-pane.active {
    grid-template-columns: 1fr;
  }
}

/* --- Simulator UI Extensions --- */
.status-indicator {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-weight: 700;
  font-size: 0.75rem;
  border-radius: var(--border-radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  transition: var(--transition-smooth);
}

.status-idle {
  background-color: var(--color-light-accent-bg);
  color: var(--color-structural);
  border-color: var(--color-border);
}

.status-active {
  background-color: #FEF9C3; /* Soft yellow */
  color: #854D0E;
  border-color: #FDE047;
  animation: sim-pulse 1.5s infinite alternate;
}

.status-passed {
  background-color: #DCFCE7; /* Soft green */
  color: #166534;
  border-color: #86EFAC;
}

.status-recording {
  background-color: #FFE4E6; /* Soft red */
  color: #9F1239;
  border-color: #FDA4AF;
  animation: sim-pulse-red 1s infinite alternate;
}

@keyframes sim-pulse {
  from { opacity: 0.8; }
  to { opacity: 1; transform: scale(1.02); }
}

@keyframes sim-pulse-red {
  from { box-shadow: 0 0 0 0px rgba(159, 18, 57, 0.4); }
  to { box-shadow: 0 0 0 6px rgba(159, 18, 57, 0.0); }
}

/* Scrollbar Customization for Terminal Panel */
.simulator-logs-panel::-webkit-scrollbar {
  width: 6px;
}
.simulator-logs-panel::-webkit-scrollbar-track {
  background: #1A1514;
}
.simulator-logs-panel::-webkit-scrollbar-thumb {
  background: var(--color-structural);
  border-radius: 3px;
}
.simulator-logs-panel::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

.log-item {
  margin-bottom: 0.4rem;
  padding: 0.2rem 0.4rem;
  border-left: 2px solid transparent;
  word-wrap: break-word;
}

.log-time {
  color: #8D746A;
  margin-right: 0.4rem;
}

.log-prefix {
  font-weight: bold;
  margin-right: 0.4rem;
}

.log-requirements {
  border-left-color: #3B82F6; /* Blue */
  color: #93C5FD;
}

.log-compliance {
  border-left-color: #EAB308; /* Yellow */
  color: #FDE047;
}

.log-validation {
  border-left-color: #A855F7; /* Purple */
  color: #D8B4FE;
}

.log-fat {
  border-left-color: #FDA4AF; /* Warm Red/Burgundy */
  color: #FECDD3;
}

.log-info {
  border-left-color: #94A3B8; /* Gray */
  color: #E2E8F0;
}

.log-success {
  border-left-color: #22C55E; /* Green */
  color: #86EFAC;
  font-weight: bold;
  background-color: rgba(34, 197, 94, 0.1);
}

@media (max-width: 992px) {
  .engineering-flow {
    min-height: 540px;
  }
}

@media (max-width: 768px) {
  .engineering-flow {
    min-height: 630px;
  }

  .flow-card {
    width: 43%;
    padding: 0.8rem;
  }

  .flow-card h3 {
    font-size: 0.9rem;
  }

  .flow-card p {
    font-size: 0.72rem;
  }

  .flow-core {
    width: 120px;
    height: 120px;
  }

  .flow-core img {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 480px) {
  .engineering-flow {
    min-height: 720px;
  }

  .flow-axis {
    left: 1.35rem;
  }

  .flow-card {
    left: 3rem;
    right: auto;
    width: calc(100% - 4rem);
    min-height: 94px;
  }

  .flow-card::after {
    top: 50%;
    left: -1.7rem;
    right: auto;
    width: 1.7rem;
  }

  .flow-requirements { top: 8%; }
  .flow-compliance { top: 24%; }
  .flow-review { top: 40%; }
  .flow-validation { top: 56%; }
  .flow-fat { top: 72%; }

  .flow-core {
    display: none;
  }

  .flow-outcome {
    left: 3rem;
    right: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .flow-signal,
  .flow-card,
  .core-ring {
    animation: none;
  }
}

/* ==========================================================================
   BLOG / INSIGHTS  (added 2026-06)
   ========================================================================== */
.breadcrumb { font-size: 0.85rem; color: var(--color-structural); margin-bottom: var(--spacing-sm); }
.breadcrumb a { color: var(--color-structural); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { margin: 0 0.4rem; opacity: 0.6; }

/* Listing cards */
.post-card { display: flex; flex-direction: column; height: 100%; }
.post-card .card-body { display: flex; flex-direction: column; flex: 1; }
.post-meta-row { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.6rem; }
.post-tag {
  display: inline-block; font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; padding: 0.2rem 0.55rem; border-radius: var(--border-radius-sm);
  background-color: var(--color-light-accent-bg); color: var(--color-accent);
}
.post-date { font-size: 0.78rem; color: var(--color-structural); font-weight: 600; }
.post-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; line-height: 1.3; }
.post-card h3 a { color: var(--color-text-main); }
.post-card h3 a:hover { color: var(--color-accent); }
.post-card .post-excerpt { font-size: 0.92rem; color: var(--color-text-main); opacity: 0.82; margin-bottom: 1rem; }
.read-more { margin-top: auto; font-weight: 600; font-size: 0.9rem; }
.read-more::after { content: " →"; }

/* Featured image placeholder (replace with <img> when artwork is ready) */
.img-placeholder {
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: repeating-linear-gradient(45deg, var(--color-light-accent-bg), var(--color-light-accent-bg) 12px, #efe8e2 12px, #efe8e2 24px);
  border: 1px dashed var(--color-structural); border-radius: var(--border-radius-sm);
  color: var(--color-structural); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.03em;
}
.post-card .img-placeholder { height: 150px; margin-bottom: 1rem; }

/* Article (single post) */
.article-wrap { max-width: 760px; margin: 0 auto; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; margin-bottom: var(--spacing-sm); }
.article-hero { height: 320px; margin: var(--spacing-md) 0; font-size: 0.9rem; }
.article-body p { font-size: 1.08rem; line-height: 1.75; margin-bottom: var(--spacing-sm); }
.article-body h2 { font-size: 1.6rem; margin-top: var(--spacing-md); margin-bottom: var(--spacing-xs); }
.article-body h3 { font-size: 1.25rem; margin-top: var(--spacing-sm); }
.article-body ul, .article-body ol { margin: 0 0 var(--spacing-sm) 1.4rem; }
.article-body li { margin-bottom: 0.5rem; font-size: 1.05rem; }
.article-body blockquote {
  border-left: 3px solid var(--color-accent); padding-left: 1rem; margin: var(--spacing-sm) 0;
  font-style: italic; color: var(--color-structural);
}
.draft-banner {
  background-color: #FEF9C3; border: 1px solid #FDE047; color: #854D0E;
  padding: 0.7rem 1rem; border-radius: var(--border-radius-sm); font-size: 0.85rem;
  font-weight: 600; margin-bottom: var(--spacing-md);
}
.post-author {
  display: flex; align-items: center; gap: 0.8rem; margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm); border-top: 1px solid var(--color-border);
  font-size: 0.9rem; color: var(--color-structural);
}
.post-author strong { color: var(--color-text-main); }
.post-cta {
  margin-top: var(--spacing-md); padding: var(--spacing-md); text-align: center;
  background-color: var(--color-light-accent-bg); border-radius: var(--border-radius-md);
}

/* Blog images (real artwork) */
.post-card > a {
  display: block;
  padding: 1rem 1rem 0;
  background-color: var(--color-white);
}

.post-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
  border-radius: var(--border-radius-sm);
  display: block;
  background-color: #f4efeb;
}

.article-hero-img { width: 100%; aspect-ratio: 3 / 2; height: auto; object-fit: cover; border-radius: var(--border-radius-md); display: block; margin: var(--spacing-md) 0; }
.post-card { padding: 0; overflow: hidden; }
.post-card .card-body { padding: 1.2rem; }

@media (max-width: 768px) {
  .post-card-img { height: 160px; }
}

/* Mobile dropdown: centre the Pilot Program button */
@media (max-width: 768px) {
  .nav .btn-primary { margin-left: 0 !important; margin-top: 0.5rem; align-self: center; }
}