/* ============================================
   THE HYBRID LAYER — Charcoal Design System v1.0
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,700;1,400;1,700&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --charcoal: #1C2420;
  --charcoal-deep: #141A17;
  --charcoal-light: #2A3630;
  --charcoal-lighter: #354540;
  --flat-lime: #C8E632;
  --lime-dim: rgba(200, 230, 50, 0.15);
  --lime-glow: rgba(200, 230, 50, 0.08);
  --coral: #E07860;
  --coral-dim: rgba(224, 120, 96, 0.15);
  --yellow: #D4A820;
  --yellow-dim: rgba(212, 168, 32, 0.12);
  --slate: #6B7B75;
  --slate-dim: rgba(107, 123, 117, 0.2);
  --cream: #F4F3E6;
  --cream-dim: rgba(244, 243, 230, 0.7);
  --cream-muted: rgba(244, 243, 230, 0.45);

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;

  /* Borders */
  --border-subtle: 1px solid rgba(200, 230, 50, 0.12);
  --border-accent: 1px solid rgba(200, 230, 50, 0.3);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-cinematic: 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--charcoal);
  color: var(--cream);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle grid texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(200, 230, 50, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 230, 50, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ============================================
   CINEMATIC EFFECTS
   ============================================ */

/* Film grain overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 9998;
  animation: grain 0.5s steps(10) infinite;
}

@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1%, -1%); }
  20% { transform: translate(1%, 1%); }
  30% { transform: translate(-1%, 1%); }
  40% { transform: translate(1%, -1%); }
  50% { transform: translate(-1%, 0); }
  60% { transform: translate(1%, 0); }
  70% { transform: translate(0, 1%); }
  80% { transform: translate(0, -1%); }
  90% { transform: translate(1%, 1%); }
}

/* Cinematic vignette */
.vignette {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9997;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.4) 100%);
}

/* Letterbox bars */
.letterbox {
  position: fixed;
  left: 0;
  width: 100%;
  height: 5vh;
  background: #000;
  z-index: 9999;
  transition: height var(--transition-cinematic);
}

.letterbox--top {
  top: 0;
}

.letterbox--bottom {
  bottom: 0;
}

.letterbox.retract {
  height: 0;
}

/* Cinematic intro overlay */
.cinematic-intro {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 1.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.cinematic-intro.fade-out {
  opacity: 0;
  pointer-events: none;
}

.cinematic-intro__logo {
  width: 120px;
  opacity: 0;
  transform: scale(0.8);
  animation: intro-logo 2s cubic-bezier(0.22, 1, 0.36, 1) 0.3s forwards;
}

@keyframes intro-logo {
  0% {
    opacity: 0;
    transform: scale(0.8);
    filter: blur(10px);
  }
  50% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

/* Parallax scroll containers */
.parallax-layer {
  will-change: transform;
  transition: transform 0.1s linear;
}

/* Ambient glow that follows scroll */
.ambient-glow {
  position: fixed;
  width: 60vw;
  height: 60vw;
  max-width: 800px;
  max-height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--lime-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
  filter: blur(60px);
  transition: transform 0.3s ease-out, opacity 0.5s ease;
}

a {
  color: var(--flat-lime);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  height: auto;
}

/* --- Utility Classes --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  position: relative;
  z-index: 1;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--flat-lime);
}

.mono-label--coral {
  color: var(--coral);
}

.mono-label--slate {
  color: var(--slate);
}

.mono-label--cream {
  color: var(--cream-muted);
}

.section-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--slate);
  letter-spacing: 0.15em;
  display: inline-block;
  border: 1px solid var(--slate-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-bottom: var(--space-sm);
}

/* Screen reader only - visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Cinematic Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(50px) scale(0.98);
  filter: blur(4px);
  transition:
    opacity var(--transition-cinematic),
    transform var(--transition-cinematic),
    filter var(--transition-cinematic);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }
.reveal-delay-4 { transition-delay: 0.6s; }
.reveal-delay-5 { transition-delay: 0.75s; }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: var(--space-sm) 0;
  transition: background var(--transition-smooth), backdrop-filter var(--transition-smooth);
}

.nav.scrolled {
  background: rgba(28, 36, 32, 0.65);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__logo {
  width: 50px;
  height: 34px;
}

.nav__title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--cream);
}

.nav__title em {
  color: var(--flat-lime);
  font-style: italic;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cream-muted);
  transition: color var(--transition-fast);
}

.nav__link:hover {
  color: var(--flat-lime);
}

/* Hamburger Menu */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.nav__hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--cream);
  transition: all var(--transition-fast);
}

.nav__hamburger.active .nav__hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger.active .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.active .nav__hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.7rem 1.6rem;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn--primary {
  background: linear-gradient(135deg, var(--flat-lime) 0%, #b2ce2a 100%);
  color: var(--charcoal);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 2px 10px rgba(0, 0, 0, 0.2);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--cream) 0%, #e6e5ce 100%);
  color: var(--charcoal);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 6px 20px var(--lime-dim);
}

.btn--outline {
  background: transparent;
  color: var(--flat-lime);
  border: 1px solid rgba(200, 230, 50, 0.4);
}

.btn--outline:hover {
  background: var(--lime-dim);
  border-color: var(--flat-lime);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: var(--space-2xl) 0;
  overflow: hidden;
}

/* Radial glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--lime-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero__logo-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.hero__logo-icon {
  width: 140px;
  height: 95px;
  filter: drop-shadow(0 0 30px var(--lime-glow));
}

.hero__text {
  max-width: 700px;
}

.hero__collab-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.hero__collab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--flat-lime);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(200, 230, 50, 0.5); }
  50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(200, 230, 50, 0); }
}

.hero__the {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--flat-lime);
  display: block;
  margin-bottom: 0.2rem;
  opacity: 0.7;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  color: var(--cream);
  margin-bottom: var(--space-sm);
  text-shadow: 0 4px 30px rgba(255, 255, 255, 0.1);
  letter-spacing: -0.02em;
}

.hero__title em {
  color: var(--flat-lime);
  font-style: italic;
}

.hero__subtitle {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--cream-dim);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.hero__subtitle strong {
  color: var(--cream);
  font-weight: 600;
}

.hero__tags {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.5rem 1.2rem;
  border: 1px solid rgba(200, 230, 50, 0.3);
  border-radius: 3px;
  color: var(--flat-lime);
  background: rgba(200, 230, 50, 0.05);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: rgba(200, 230, 50, 0.12);
  border-color: var(--flat-lime);
}

.hero__subscribe {
  display: flex;
  gap: 0.5rem;
  max-width: 460px;
}

.hero__input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.8rem 1.2rem;
  background: var(--charcoal-light);
  border: var(--border-subtle);
  border-radius: 4px;
  color: var(--cream);
  outline: none;
  transition: border-color var(--transition-fast);
}

.hero__input::placeholder {
  color: var(--slate);
}

.hero__input:focus {
  border-color: var(--flat-lime);
  box-shadow: 0 0 0 3px var(--lime-dim);
}

/* Adjustments for the comparison grid when inside hero */
.hero__graphic .comparison__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 2px minmax(0, 1fr);
  gap: var(--space-xs);
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: rgba(42, 54, 48, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  position: relative;
}

.hero__graphic .comparison__side {
  padding: var(--space-xs) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__graphic .comparison__heading {
  font-size: clamp(1.4rem, 2vw, 2rem);
  margin-bottom: var(--space-sm);
}

.hero__graphic .skill-bar__label {
  min-width: 55px;
  font-size: 0.55rem;
}

.hero__graphic .skill-bars {
  gap: 0.35rem;
}

.hero__graphic .skill-bar__track {
  height: 4px;
}

.comparison__footer-quote {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  line-height: 1.4;
  text-align: center;
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  color: var(--cream-muted);
  font-style: italic;
}

.hero__graphic .comparison__quote {
  display: none;
}

/* ============================================
   BRAND CONCEPT — THE THREE LAYERS
   ============================================ */
.layers {
  padding: var(--space-2xl) 0;
  position: relative;
}

.layers__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.layers__title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--cream-muted);
}

.layers__grid {
  max-width: 750px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.layer-card {
  display: flex;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  transform: translateY(0);
}

.layer-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.layer-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.layer-card:hover::before {
  opacity: 1;
}

/* Human Layer */
.layer-card--human {
  background: rgba(224, 120, 96, 0.1);
  border-top: 1px solid rgba(224, 120, 96, 0.3);
  border-left: 1px solid rgba(224, 120, 96, 0.15);
}

.layer-card--human::before {
  background: radial-gradient(ellipse at left, rgba(224, 120, 96, 0.15), transparent 70%);
}

/* Hybrid Layer */
.layer-card--hybrid {
  background: rgba(200, 230, 50, 0.05);
  border-top: 1px solid rgba(200, 230, 50, 0.3);
  border-left: 1px solid rgba(200, 230, 50, 0.15);
  padding: var(--space-lg);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25), inset 0 0 20px rgba(200, 230, 50, 0.05);
}

.layer-card--hybrid::before {
  background: radial-gradient(ellipse at left, rgba(200, 230, 50, 0.15), transparent 70%);
}

/* AI Layer */
.layer-card--ai {
  background: rgba(107, 123, 117, 0.1);
  border-top: 1px solid rgba(200, 230, 50, 0.2);
  border-left: 1px solid rgba(200, 230, 50, 0.1);
}

.layer-card--ai::before {
  background: radial-gradient(ellipse at left, rgba(200, 230, 50, 0.05), transparent 70%);
}

.layer-card__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: var(--space-md);
  flex-shrink: 0;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.layer-card:hover .layer-card__dot {
  transform: scale(1.2);
}

.layer-card__dot--coral { background: var(--coral); box-shadow: 0 0 10px rgba(224, 120, 96, 0.4); }
.layer-card__dot--lime {
  background: var(--flat-lime);
  box-shadow: 0 0 15px var(--lime-dim);
}
.layer-card__dot--slate-green { background: var(--flat-lime); opacity: 0.5; box-shadow: 0 0 8px rgba(200, 230, 50, 0.2); }

.layer-card__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  min-width: 180px;
}

.layer-card--human .layer-card__label { color: var(--coral); }
.layer-card--hybrid .layer-card__label { color: var(--flat-lime); }
.layer-card--ai .layer-card__label { color: var(--flat-lime); opacity: 0.7; }

.layer-card__desc {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--cream-dim);
}

.layer-card--hybrid .layer-card__desc {
  color: var(--cream);
  font-size: 1.2rem;
}

/* Arrow animation for hybrid card */
.layer-card__arrows {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--flat-lime);
  opacity: 0.5;
  display: inline-block;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.layer-card--hybrid:hover .layer-card__arrows:first-child {
  transform: translateX(-4px);
  opacity: 1;
}

.layer-card--hybrid:hover .layer-card__arrows:last-child {
  transform: translateX(4px);
  opacity: 1;
}

/* ============================================
   HUMAN vs AI SECTION
   ============================================ */
.comparison {
  padding: var(--space-2xl) 0;
  position: relative;
}

.comparison::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--slate-dim) 20%, var(--slate-dim) 80%, transparent);
}

.comparison__grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  position: relative;
}

.comparison__side {
  padding: var(--space-lg);
  position: relative;
  z-index: 1;
}

/* Center Pillar */
.comparison__center {
  position: relative;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2;
}

.comparison__center-line {
  position: absolute;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--lime-dim) 30%, rgba(200, 230, 50, 0.4) 50%, var(--lime-dim) 70%, transparent);
}

.comparison__center-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--flat-lime);
  box-shadow: 0 0 15px 3px rgba(200, 230, 50, 0.4), 0 0 30px 8px rgba(200, 230, 50, 0.05);
  animation: center-glow 4s infinite alternate ease-in-out;
}

@keyframes center-glow {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1.3); opacity: 1; }
}

.comparison__center-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(20, 26, 23, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  border: 1px solid rgba(200, 230, 50, 0.15);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.comparison__center-label span {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--flat-lime);
  text-transform: uppercase;
  white-space: nowrap;
}

.comparison__header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.comparison__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.comparison__dot--human { background: var(--coral); }
.comparison__dot--ai { background: var(--flat-lime); }

.comparison__heading {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-lg);
}

.comparison__side--human .comparison__heading {
  color: var(--cream);
  font-style: normal;
}

.comparison__side--ai .comparison__heading {
  color: var(--flat-lime);
  font-style: italic;
  text-align: right;
}

.comparison__side--ai {
  text-align: right;
}

/* Skill Bars */
.skill-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.skill-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.skill-bar--reverse {
  flex-direction: row-reverse;
}

.skill-bar__label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  min-width: 90px;
}

.comparison__side--human .skill-bar__label { color: var(--coral); }
.comparison__side--ai .skill-bar__label { color: var(--flat-lime); opacity: 0.8; }

.skill-bar__track {
  flex: 1;
  height: 6px;
  background: rgba(42, 54, 48, 0.5);
  border-radius: 3px;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.skill-bar__fill {
  height: 100%;
  border-radius: 2px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-bar__fill--coral {
  background: linear-gradient(90deg, var(--coral), rgba(224, 120, 96, 0.5));
}

.skill-bar__fill--lime {
  background: linear-gradient(270deg, var(--flat-lime), rgba(200, 230, 50, 0.4));
}

.skill-bar.animated .skill-bar__fill {
  width: var(--bar-width);
}

/* Comparison Quotes */
.comparison__quote {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--cream-muted);
  margin-top: var(--space-xl);
  line-height: 1.7;
  position: relative;
  padding-top: var(--space-md);
  border-top: var(--border-subtle);
}

/* ============================================
   PHILOSOPHY SECTION
   ============================================ */
.philosophy {
  padding: var(--space-2xl) 0;
  text-align: center;
  position: relative;
}

.philosophy::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--lime-glow) 0%, transparent 65%);
  pointer-events: none;
}

.philosophy__quote {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-style: italic;
  font-weight: 400;
  color: var(--cream);
  max-width: 800px;
  margin: 0 auto var(--space-lg);
  line-height: 1.5;
  position: relative;
  z-index: 1;
}

.philosophy__quote strong {
  color: var(--flat-lime);
  font-weight: 700;
}

.philosophy__byline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
  position: relative;
  z-index: 1;
}

/* ============================================
   ABOUT / WHAT IS SECTION
   ============================================ */
.about {
  padding: var(--space-2xl) 0;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about__content h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--cream);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.about__content h2 em {
  color: var(--flat-lime);
  font-style: italic;
}

.about__content p {
  font-size: 1.05rem;
  color: var(--cream-dim);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.about__content p strong {
  color: var(--cream);
}

.about__topics {
  padding: var(--space-lg);
  background: rgba(42, 54, 48, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.about__topics-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--flat-lime);
  margin-bottom: var(--space-md);
}

.topic-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.topic-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm);
  border-radius: 6px;
  transition: background var(--transition-fast);
}

.topic-list__item:hover {
  background: rgba(200, 230, 50, 0.04);
}

.topic-list__icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.topic-list__name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cream);
  display: block;
  margin-bottom: 0.2rem;
}

.topic-list__desc {
  font-size: 0.85rem;
  color: var(--cream-muted);
  line-height: 1.5;
}

/* ============================================
   SUBSCRIBE CTA SECTION
   ============================================ */
.subscribe {
  padding: var(--space-2xl) 0;
  text-align: center;
  position: relative;
}

.subscribe__card {
  max-width: 650px;
  margin: 0 auto;
  padding: var(--space-xl);
  background: rgba(42, 54, 48, 0.6);
  border: 1px solid rgba(200, 230, 50, 0.15);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.subscribe__card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, var(--lime-glow) 0%, transparent 50%);
  pointer-events: none;
}

.subscribe__title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--cream);
  margin-bottom: var(--space-xs);
  position: relative;
  z-index: 1;
}

.subscribe__title em {
  color: var(--flat-lime);
  font-style: italic;
}

.subscribe__desc {
  font-size: 1rem;
  color: var(--cream-muted);
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
}

.subscribe__form {
  display: flex;
  gap: 0.5rem;
  max-width: 460px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.subscribe__input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.9rem 1.2rem;
  background: var(--charcoal);
  border: var(--border-subtle);
  border-radius: 4px;
  color: var(--cream);
  outline: none;
  transition: border-color var(--transition-fast);
}

.subscribe__input::placeholder {
  color: var(--slate);
}

.subscribe__input:focus {
  border-color: var(--flat-lime);
  box-shadow: 0 0 0 3px var(--lime-dim);
}

.subscribe__success {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  position: relative;
  z-index: 1;
}

.subscribe__success.show {
  display: flex;
}

.subscribe__success-icon {
  font-size: 2rem;
}

.subscribe__success-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--flat-lime);
  letter-spacing: 0.1em;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-lg) 0;
  border-top: var(--border-subtle);
  position: relative;
  z-index: 1;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer__logo {
  width: 40px;
  height: 27px;
  opacity: 0.6;
}

.footer__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cream-muted);
}

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

.footer__link {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--flat-lime);
}

.footer__sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--slate);
  opacity: 0.4;
}

/* ============================================
   DIVIDERS
   ============================================ */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--slate-dim), transparent);
  margin: 0;
  border: none;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__logo-block {
    order: -1;
    margin-bottom: var(--space-md);
  }

  .hero__tags {
    justify-content: center;
  }

  .hero__subscribe {
    max-width: 100%;
    justify-content: center;
  }

  .comparison::before {
    display: none;
  }

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

  .comparison__center {
    display: none;
  }

  .comparison__side--ai {
    text-align: left;
  }

  .comparison__side--ai .comparison__heading {
    text-align: left;
  }

  .skill-bar--reverse {
    flex-direction: row;
  }

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

  .footer__inner {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer__meta {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav__links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--charcoal-deep);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    z-index: 99;
  }

  .nav__links.open {
    display: flex;
  }

  .nav__links .nav__link {
    font-size: 1rem;
  }

  .nav__hamburger {
    display: flex;
  }
}

@media (max-width: 600px) {
  .hero__subscribe {
    flex-direction: column;
  }

  .subscribe__form {
    flex-direction: column;
  }

  .layer-card {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }

  .layer-card__label {
    min-width: unset;
  }
}

/* ============================================
   REDUCED MOTION PREFERENCES
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }

  .cinematic-intro,
  .letterbox,
  .vignette,
  .ambient-glow {
    display: none !important;
  }

  body::after {
    animation: none;
  }

  .skill-bar__fill {
    transition: none;
    width: var(--bar-width);
  }
}