/* Style Variables & Design Tokens - Parchment Drafting Theme */
:root {
  --bg-color: #F4F1EA;          /* Warm Parchment Cream */
  --bg-offset: #FAF9F6;         /* Soft White Card Background */
  --text-primary: #1C1A17;      /* Charcoal black ink */
  --text-secondary: #4A4640;    /* Graphite gray pencil */
  --text-muted: #8E877E;        /* Soft drafting line sepia/gray */
  --text-light: #FFFFFF;
  --accent-color: #B85A32;      /* Terracotta red/orange */
  --accent-hover: #9A4621;      /* Deep terracotta */
  --border-color: rgba(0, 0, 0, 0.08); /* Faint pencil guidelines */
  --border-light: rgba(0, 0, 0, 0.16); /* Structuring borders */
  --input-bg: #FAF9F6;          /* Input box background */
  --error-color: #EF4444;       /* Alert red */
  
  --font-serif: 'Cormorant Garamond', Georgia, serif; /* Luxury Serif */
  --font-sans: 'Instrument Sans', 'Inter', -apple-system, sans-serif;
  --font-marker: 'Permanent Marker', cursive; /* Sketch felt marker */
  
  --max-width: 1040px;
  --max-width-small: 720px;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Obsidian Background */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  background-image: 
    linear-gradient(rgba(184, 90, 50, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 90, 50, 0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  line-height: 1.625;
  overflow-x: hidden;
  padding-bottom: 0;
}

/* Typography Scale */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 300;
  line-height: 1.15;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

/* Global Layout Containers & Blueprint Corner Ticks */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.small-container {
  max-width: var(--max-width-small);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.blueprint-section {
  position: relative;
}

/* Drafting Corner Ticks (+) */
.blueprint-section::before,
.blueprint-section::after {
  content: '+';
  position: absolute;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--text-muted);
  opacity: 0.4;
  font-weight: 300;
  pointer-events: none;
}
.blueprint-section::before { top: 1.5rem; left: 1.5rem; }
.blueprint-section::after { bottom: 1.5rem; right: 1.5rem; }

.section-divider {
  border: none;
  height: 1px;
  background-color: var(--border-color);
  margin: 7rem auto;
  max-width: var(--max-width);
  padding: 0 2rem;
  width: calc(100% - 4rem);
}

/* Header & Navigation (Parchment Translucent Style) */
.site-header {
  padding: 1.25rem 0;
  background-color: rgba(244, 241, 234, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Header Container & Logo */
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-logo-group {
  display: flex;
  align-items: center;
}

.site-logo {
  display: inline-flex;
  align-items: baseline;
  text-decoration: none;
  font-family: var(--font-serif);
  font-weight: 300;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.site-logo:hover {
  opacity: 0.85;
}

.logo-u {
  font-size: 2.65rem;
  line-height: 0.8;
  font-weight: 400;
}

.logo-q {
  font-size: 1.45rem;
  font-weight: 400;
  transform: translate(1px, -11px);
  display: inline-block;
  color: var(--accent-color);
}

.stamp-spec-badge {
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
  padding: 0.15rem 0.35rem;
  border-radius: 2px;
  font-weight: bold;
  display: inline-block;
  background-color: rgba(184, 90, 50, 0.04);
}

.site-header .site-nav a {
  color: rgba(96, 91, 84, 0.52);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  transform: translateY(0);
  transition: color 0.28s ease, font-size 0.28s ease, opacity 0.28s ease, transform 0.28s ease;
}

.site-header .site-nav a:hover {
  color: var(--accent-color);
}

.site-header .site-nav a + a::before {
  content: '⟶';
  color: rgba(184, 90, 50, 0.28);
  font-family: monospace;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0;
  transform: translateY(-0.02em);
}

.site-header .site-nav a.is-active {
  color: var(--accent-color);
  font-size: 0.86rem;
  opacity: 1;
  transform: translateY(-1px);
}

.site-header .site-nav a.is-active::before {
  color: rgba(184, 90, 50, 0.62);
}

.wordmark {
  text-decoration: none;
  transition: var(--transition-fast);
}

.wordmark:hover {
  opacity: 0.85;
}

.site-nav {
  display: flex;
  gap: 1.45rem;
  align-items: center;
}

.site-nav a {
  text-decoration: none;
}

/* Hero Section (Blueprint drafting board) */
.hero-section {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 8rem 0;
  border-bottom: 1px solid var(--border-color);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  max-width: 880px;
  pointer-events: auto;
}

.system-tag {
  font-family: monospace;
  font-size: 0.72rem;
  color: var(--accent-color);
  letter-spacing: 0.05em;
  display: block;
}

/* Notebook Header Meta & Dates */
.notebook-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.25rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 0.75rem;
}

.notebook-date {
  font-family: monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Research Theorem Block Styles */
.theorem-block {
  border-left: 2.5px solid var(--accent-color);
  background-color: rgba(184, 90, 50, 0.012);
  padding: 1.5rem 1.85rem;
  margin-bottom: 2.5rem;
  border-radius: 0 3px 3px 0;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.008);
}

.theorem-title {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-color);
  margin-bottom: 0.85rem;
}

.theorem-body {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.2rem);
  line-height: 1.625;
  color: var(--text-primary);
}

/* Optimization Formulation block details */
.formulation-block {
  border-left: 2.5px solid var(--text-secondary);
  background-color: rgba(0, 0, 0, 0.005);
}

.formulation-block .theorem-title {
  color: var(--text-primary);
}

.formulation-block .theorem-body {
  font-family: monospace;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.formula-line {
  margin-bottom: 0.5rem;
}

.formula-constraints {
  list-style: none;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.formula-constraints li {
  margin-bottom: 0.4rem;
  position: relative;
}

.formula-constraints li::before {
  content: '↳';
  position: absolute;
  left: -1.25rem;
  color: var(--accent-color);
}

.math-operator {
  color: var(--accent-color);
  font-weight: bold;
}

.theorem-annotation {
  font-family: var(--font-sans);
  font-style: italic;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* Margin Annotations */
.margin-annotation {
  position: absolute;
  left: -180px;
  width: 145px;
  font-family: monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.85;
  text-align: right;
  pointer-events: none;
  border-right: 1px solid var(--border-color);
  padding-right: 12px;
}

@media (max-width: 1040px) {
  .margin-annotation {
    position: static;
    width: auto;
    text-align: left;
    border-right: none;
    border-left: 2px solid var(--border-color);
    padding: 0 0 0 10px;
    margin-bottom: 1.25rem;
  }
}

/* Blueprint Specifications Grid Styling */
.blueprint-spec-grid {
  display: grid;
  grid-template-columns: 160px 1fr;
  border-top: 1px solid var(--border-color);
  width: 100%;
  margin-bottom: 3.5rem;
}

.hero-spec {
  max-width: 720px;
}

.spec-row {
  display: contents;
}

.spec-label {
  padding: 1.25rem 0;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
  cursor: default;
}

.spec-value {
  padding: 1.25rem 0 1.25rem 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.975rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  line-height: 1.6;
  transition: var(--transition-fast);
}

.spec-row:hover .spec-label {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

.spec-row:hover .spec-value {
  color: var(--text-primary);
  border-bottom-color: var(--accent-color);
}

/* Buttons (Crisp Terracotta) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: 0.875rem 2.25rem;
  border-radius: 3px;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #FFFFFF;
  border: 1px solid var(--accent-color);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(184, 90, 50, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Center Scrolling Narrative Columns */
.story-scrolling-side {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 2;
  pointer-events: auto;
}

@media (min-width: 1025px) {
  .story-scrolling-side {
    max-width: 440px;
    margin: 0 0 0 8%;
  }
}

.story-sticky-side {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: none; /* Clicking through to text and chat input */
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-canvas {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  box-shadow: none;
}

.story-section {
  min-height: 100vh;
  padding: 12vh 0 8vh 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  border-bottom: none;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.story-section:last-child {
  min-height: 100vh;
  padding-bottom: 15vh;
}

.hero-story-section {
  min-height: 85vh;
  padding-top: 4rem;
}

.story-title {
  font-size: clamp(3rem, 6vw, 4.5rem);
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  line-height: 1.1;
}

.hero-intro-copy {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 680px;
}

.intro-typewrite {
  min-height: 8.5rem;
  max-width: 540px;
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  line-height: 1.7;
}

.intro-typewrite.is-typing::after {
  content: '';
  display: inline-block;
  width: 0.45em;
  height: 1em;
  margin-left: 0.18em;
  border-right: 1px solid var(--accent-color);
  transform: translateY(0.14em);
  animation: cursorBlink 0.72s steps(2, start) infinite;
}

@keyframes cursorBlink {
  0%, 45% { opacity: 1; }
  46%, 100% { opacity: 0; }
}

.section-num {
  font-family: monospace;
  font-size: 0.8125rem;
  color: var(--accent-color);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.story-heading {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.story-heading-small {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 3vw, 2.35rem);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.story-subheading {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-color);
  margin-top: -1rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.story-copy {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Specs subgrid in production build */
.production-specs {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

.production-specs .spec-label {
  padding: 1rem 0;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.production-specs .spec-value {
  padding: 1rem 0 1rem 1.5rem;
  font-size: 0.9rem;
}

#production {
  position: relative;
}

.production-tech-stack {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
  width: min(100%, 520px);
  margin-top: 2rem;
}

.tech-badge {
  display: grid;
  grid-template-columns: 2.1rem 1fr;
  align-items: center;
  min-height: 2.25rem;
  border: 1px solid rgba(184, 90, 50, 0.28);
  background: rgba(250, 249, 246, 0.5);
  box-shadow: 0 5px 18px rgba(28, 26, 23, 0.025);
  color: var(--text-secondary);
  overflow: hidden;
}

.tech-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  border-right: 1px solid rgba(184, 90, 50, 0.2);
  color: var(--accent-color);
  font-family: monospace;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.tech-name {
  padding: 0 0.55rem;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  line-height: 1.1;
  white-space: nowrap;
}

@media (min-width: 1025px) {
  .production-tech-stack {
    position: absolute;
    left: calc(48vw);
    top: 66vh;
    width: min(520px, 40vw);
    margin-top: 0;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    opacity: 0.86;
  }
}

.archetype-cards-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  width: 100%;
}

.archetype-card-btn {
  background-color: var(--bg-offset);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  text-align: left;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.75rem;
  row-gap: 0.15rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  outline: none;
  font-family: inherit;
  color: var(--text-primary);
  width: 100%;
  box-sizing: border-box;
}

.archetype-card-btn .card-num {
  grid-column: 1;
  grid-row: 1 / 3;
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--accent-color);
  font-weight: bold;
  align-self: start;
  margin-top: 0.15rem;
}

.archetype-card-btn .card-title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

.archetype-card-btn .card-desc {
  grid-column: 2;
  grid-row: 2;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.3;
  transition: var(--transition-fast);
}

/* Hover & Active States */
.archetype-card-btn:hover {
  background-color: var(--bg-color);
  border-color: var(--accent-color);
  box-shadow: 0 4px 15px rgba(184, 90, 50, 0.08);
}

.archetype-card-btn:hover .card-title {
  color: var(--accent-color);
}

.archetype-card-btn.active {
  background-color: var(--bg-color);
  border-color: var(--accent-color);
  box-shadow: 0 4px 20px rgba(184, 90, 50, 0.12);
  outline: 1px solid var(--accent-color);
}

.archetype-card-btn.active .card-title {
  color: var(--accent-color);
}

.archetype-card-btn:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Chat Terminal Container & Redesigned Inquiry Form */
.inquiry-header-container {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
  width: 100%;
}

.terminal-animated-logo {
  font-family: var(--font-serif);
  margin-bottom: 1rem;
  display: inline-flex;
  justify-content: center;
  align-items: baseline;
  color: var(--text-primary);
}

.terminal-animated-logo .logo-char-u {
  font-size: clamp(3.5rem, 8vw, 5rem);
  line-height: 0.8;
  font-weight: 400;
  color: var(--text-primary);
}

.terminal-animated-logo .logo-char-q {
  font-size: clamp(1.9rem, 4.4vw, 2.75rem);
  font-weight: 400;
  color: var(--accent-color);
  transform: translate(0.07em, -0.47em);
  display: inline-block;
}

.terminal-animated-logo .logo-fill-nified {
  font-size: clamp(1.9rem, 4.4vw, 2.75rem);
  font-weight: 300;
  color: var(--text-secondary);
  display: inline-block;
  vertical-align: baseline;
}

.terminal-animated-logo .logo-fill-uant {
  font-size: clamp(1.9rem, 4.4vw, 2.75rem);
  font-weight: 300;
  color: var(--text-secondary);
  display: inline-block;
  transform: translate(0.07em, -0.47em);
}

.terminal-animated-logo.falling {
  animation: lettersFall 0.8s cubic-bezier(0.76, 0, 0.24, 1) forwards;
}

@keyframes lettersFall {
  0% { transform: translateY(0); opacity: 1; filter: blur(0); }
  100% { transform: translateY(40px); opacity: 0; filter: blur(3px); pointer-events: none; height: 0; margin: 0; display: none; }
}

.terminal-question-prompt {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 4vw, 2.55rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  opacity: 0;
  transform: translateY(-15px);
  display: none;
  text-align: center;
  width: 100%;
  color: var(--text-primary);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.terminal-question-prompt.visible {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.terminal-question-prompt .logo-char-u {
  font-weight: 500;
  color: var(--accent-color);
}

.terminal-question-prompt .logo-char-q {
  font-weight: 500;
  color: var(--accent-color);
}

/* Circular Input Container styling */
.circular-terminal-form-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 100%;
  margin-top: 1.5rem;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  min-height: 430px;
}

.circular-terminal-form-container.visible {
  opacity: 1;
  transform: translateY(0);
}

.form-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.form-honeypot[hidden] {
  display: none !important;
}

.form-submit-frame[hidden] {
  display: none !important;
}

@media (min-width: 1025px) {
  .circular-terminal-form-container {
    transform: translateX(calc(50vw - 8% - 250px)) translateY(15px);
  }
  .circular-terminal-form-container.visible {
    transform: translateX(calc(50vw - 8% - 250px)) translateY(0);
  }
}

.circular-input-box {
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background-color: var(--bg-offset);
  border: 1px solid var(--border-light);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.025);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 5;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
  overflow: hidden;
  box-sizing: border-box;
}

.circular-input-box:focus-within {
  border-color: var(--accent-color);
  box-shadow: 0 12px 35px rgba(184, 90, 50, 0.07);
}

.circular-input-inner {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 3.25rem 3rem;
  box-sizing: border-box;
  position: relative;
}

.circular-textarea {
  width: 86%;
  height: 190px;
  background: none;
  border: none;
  resize: none;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-primary);
  text-align: center;
  outline: none;
  padding: 0.25rem;
  box-sizing: border-box;
  overflow-y: auto;
}

.circular-textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.circular-textarea::-webkit-scrollbar {
  width: 3px;
}

.circular-textarea::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 1.5px;
}

.circular-divider {
  width: 65%;
  height: 1px;
  background-color: var(--border-color);
  margin: 0.9rem 0 0.9rem 0;
}

.circular-email-input {
  width: 80%;
  background: none;
  border: none;
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--text-primary);
  text-align: center;
  outline: none;
  padding: 0.25rem 0;
  box-sizing: border-box;
}

.circular-email-input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.btn-circular-submit {
  position: absolute;
  bottom: 1.15rem;
  left: 50%;
  transform: translateX(-50%) scale(1);
  background-color: var(--accent-color);
  color: #FFFFFF;
  border: none;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(184, 90, 50, 0.22);
  transition: background-color 0.3s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
  z-index: 10;
}

.btn-circular-submit:hover {
  background-color: var(--accent-hover);
  transform: translateX(-50%) scale(1.08);
  box-shadow: 0 5px 12px rgba(184, 90, 50, 0.3);
}

.btn-circular-submit:active {
  transform: translateX(-50%) scale(0.96);
}

.btn-circular-submit .send-icon {
  width: 0.85rem;
  height: 0.85rem;
  transform: translate(-1px, 1px);
  stroke: #FFFFFF;
}

/* Circular Success Overlay styling */
.circular-success-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background-color: var(--bg-offset);
  border: 1px solid var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 12;
  box-shadow: 0 10px 30px rgba(184, 90, 50, 0.08);
  animation: fadeIn 0.4s ease-out forwards;
}

.circular-success-overlay[hidden] {
  display: none !important;
}

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

/* Responsive Scaling for Circular Form to match canvas drawing scales */
@media (max-width: 1024px) {
  .circular-terminal-form-container {
    min-height: 370px;
  }
  .circular-input-box, .circular-success-overlay {
    width: 340px;
    height: 340px;
  }
  .circular-input-inner {
    padding: 2.35rem;
  }
  .circular-textarea {
    height: 145px;
    font-size: 0.82rem;
  }
  .circular-divider {
    margin: 0.25rem 0 0.5rem 0;
  }
  .circular-email-input {
    font-size: 0.7rem;
  }
  .btn-circular-submit {
    bottom: 0.85rem;
    width: 2rem;
    height: 2rem;
  }
}

@media (max-width: 768px) {
  .circular-terminal-form-container {
    min-height: 320px;
  }
  .circular-input-box, .circular-success-overlay {
    width: min(310px, calc(100vw - 2rem));
    height: min(310px, calc(100vw - 2rem));
  }
  .circular-input-inner {
    padding: 2rem 1.6rem;
  }
  .circular-textarea {
    height: 125px;
    font-size: 0.75rem;
    padding: 0.1rem;
    width: 92%;
  }
  .circular-divider {
    margin: 0.15rem 0 0.35rem 0;
    width: 75%;
  }
  .circular-email-input {
    font-size: 0.65rem;
    width: 90%;
  }
  .btn-circular-submit {
    bottom: 0.5rem;
    width: 1.65rem;
    height: 1.65rem;
  }
  .btn-circular-submit .send-icon {
    width: 0.7rem;
    height: 0.7rem;
  }
}

/* Combined Logic & Systems side-by-side layout (Stage 8) */
.combined-layout-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 100%;
}

@media (min-width: 1025px) {
  .combined-logic-pattern {
    max-width: 1000px !important;
    width: calc(100vw - 16vw) !important;
  }
  .combined-layout-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
  }
}

/* Footer Section */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 5rem 0;
  background-color: var(--bg-offset);
  color: var(--text-primary);
  position: relative;
  z-index: 10;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

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

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
}

.copyright {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  gap: 2rem;
}

.footer-nav a {
  text-decoration: none;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

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

.site-footer .footer-wordmark {
  font-family: var(--font-marker);
  font-size: 1.75rem;
  font-weight: 400;
  color: #1C1A17;
  transform: rotate(-1.5deg);
  display: inline-block;
}

/* Privacy Modal Overlay */
.privacy-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(3, 3, 3, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 110;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.privacy-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.privacy-dialog {
  background-color: var(--bg-offset);
  border: 1px solid var(--border-color);
  max-width: 500px;
  width: calc(100% - 2rem);
  padding: 3rem;
  border-radius: 3px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.privacy-overlay.is-open .privacy-dialog {
  transform: translateY(0);
}

.close-privacy {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  border: none;
  background: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.close-privacy:hover {
  color: var(--text-primary);
}

.privacy-title {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.privacy-dialog p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Accessibility / Focus Styling */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 3px;
}

/* Media Queries & Responsive Refinements */
@media (max-width: 900px) {
  .story-section {
    min-height: auto;
    padding: 6rem 0;
  }
  
  .story-section:last-child {
    min-height: auto;
    padding-bottom: 8rem;
  }
}

@media (max-width: 600px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
  
  .site-nav {
    gap: 1.25rem;
  }
  
  .site-header .wordmark {
    font-size: 1.85rem;
  }
  
  .story-title {
    font-size: 2.5rem;
  }
  
  .story-heading {
    font-size: 2.0rem;
  }
  
  .blueprint-spec-grid {
    grid-template-columns: 1fr;
  }
  
  .spec-label {
    padding-top: 1rem;
    padding-bottom: 0.25rem;
    border-bottom: none;
  }
  
  .spec-value {
    padding-left: 0;
    padding-top: 0;
    padding-bottom: 1rem;
  }
  
  .footer-meta {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 1.5rem;
  }
  
  .footer-nav {
    gap: 1.5rem;
  }
}

@media (max-width: 350px) {
  .circular-input-box, .circular-success-overlay {
    width: min(290px, calc(100vw - 1.5rem));
    height: min(290px, calc(100vw - 1.5rem));
  }
  .circular-textarea {
    height: 112px;
    font-size: 0.72rem;
  }
  .circular-email-input {
    font-size: 0.72rem;
  }
}

/* Stacked Chevron Scroll Indicator */
.scroll-next-indicator {
  display: flex;
  justify-content: center;
  align-items: center;
  align-self: center;
  margin-top: clamp(2rem, 10vh, 4.75rem);
  padding: 0.75rem;
  cursor: pointer;
  opacity: 0.64;
  color: var(--accent-color);
  border: 1px solid rgba(184, 90, 50, 0.28);
  background: rgba(250, 249, 246, 0.68);
  box-shadow: 0 6px 18px rgba(28, 26, 23, 0.035);
  transition: opacity 0.3s ease, border-color 0.3s ease, background 0.3s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  width: 72px;
  min-height: 58px;
  box-sizing: border-box;
  animation: subtleChevronNudge 2.8s ease-in-out infinite;
  z-index: 3;
}

.chevron-stack {
  width: 54px !important;
  height: 33px !important;
  color: currentColor;
}

.chevron-stack path {
  stroke-width: 0.9;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), stroke 0.3s ease;
}

.scroll-next-indicator:hover {
  opacity: 0.9;
  border-color: rgba(184, 90, 50, 0.48);
  background: rgba(250, 249, 246, 0.86);
  transform: translateY(2px);
}

.scroll-next-indicator:focus-visible {
  opacity: 0.95;
  outline: 1px solid var(--accent-color);
  outline-offset: 4px;
}

.scroll-next-indicator:hover .chevron-line-1 {
  transform: translateY(2px);
  stroke: var(--accent-color);
}

.scroll-next-indicator:hover .chevron-line-2 {
  transform: translateY(4px);
  stroke: var(--accent-color);
}

@keyframes subtleChevronNudge {
  0%, 72%, 100% {
    transform: translateY(0);
  }
  84% {
    transform: translateY(3px);
  }
}