/* ═══════════════════════════════════════════════════
   EncodeIQ - Design System & Stylesheet
   Dark-first, terminal/technical aesthetic
   ═══════════════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem;  --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;    --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --content-narrow: 720px;
  --content-default: 1060px;
  --content-wide: 1440px;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'JetBrains Mono', 'Courier New', monospace;
  --font-body: 'Geist', 'Inter', -apple-system, sans-serif;
}

/* ── DARK PALETTE (default) ── */
:root, [data-theme="dark"] {
  --color-bg:             #080b10;
  --color-surface:        #0d1117;
  --color-surface-2:      #111820;
  --color-surface-raised: #161e28;
  --color-border:         #1e2a38;
  --color-border-subtle:  #161f2b;
  --color-divider:        #182030;

  --color-text:           #e4e9f1;
  --color-text-muted:     #94a3bb;
  --color-text-faint:     #6d809a;
  --color-text-inverse:   #080b10;

  /* Electric cyan - video signal */
  --color-accent:         #00cfe8;
  --color-accent-hover:   #00b5cc;
  --color-accent-active:  #0096ab;
  --color-accent-glow:    rgba(0, 207, 232, 0.15);
  --color-accent-subtle:  rgba(0, 207, 232, 0.08);

  /* Purple - AI/neural network secondary */
  --color-secondary:      #7c5cfc;
  --color-secondary-glow: rgba(124, 92, 252, 0.15);

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 32px var(--color-accent-glow);
}

/* ── LIGHT PALETTE ── */
[data-theme="light"] {
  --color-bg:             #f5f7fa;
  --color-surface:        #ffffff;
  --color-surface-2:      #f0f2f5;
  --color-surface-raised: #ffffff;
  --color-border:         #dde2ea;
  --color-border-subtle:  #e8ecf2;
  --color-divider:        #e2e7ef;

  --color-text:           #0f1722;
  --color-text-muted:     #576070;
  --color-text-faint:     #aab3bf;
  --color-text-inverse:   #ffffff;

  --color-accent:         #0099bb;
  --color-accent-hover:   #007a99;
  --color-accent-active:  #005e78;
  --color-accent-glow:    rgba(0, 153, 187, 0.12);
  --color-accent-subtle:  rgba(0, 153, 187, 0.07);

  --color-secondary:      #6040e0;
  --color-secondary-glow: rgba(96, 64, 224, 0.1);

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.07);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 32px var(--color-accent-glow);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #080b10; --color-surface: #0d1117; --color-surface-2: #111820;
    --color-surface-raised: #161e28; --color-border: #1e2a38;
    --color-border-subtle: #161f2b; --color-divider: #182030;
    --color-text: #e4e9f1; --color-text-muted: #94a3bb; --color-text-faint: #6d809a;
    --color-text-inverse: #080b10; --color-accent: #00cfe8;
    --color-accent-hover: #00b5cc; --color-accent-active: #0096ab;
    --color-accent-glow: rgba(0,207,232,0.15); --color-accent-subtle: rgba(0,207,232,0.08);
    --color-secondary: #7c5cfc; --color-secondary-glow: rgba(124,92,252,0.15);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4); --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.6); --shadow-glow: 0 0 32px var(--color-accent-glow);
  }
}

/* ═══════════════════════════════════════════
   BASE RESET
   ═══════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
  hanging-punctuation: first last;
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li { text-wrap: pretty; max-width: 72ch; }

::selection { background: var(--color-accent-glow); color: var(--color-accent); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: var(--radius-sm); }

a { text-decoration: none; color: inherit; }
button { cursor: pointer; background: none; border: none; }

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

/* ═══════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════ */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 4vw, var(--space-12));
}
.container--narrow {
  max-width: var(--content-narrow);
}
.mono { font-family: var(--font-display); }
.accent-text { color: var(--color-accent); }
.link-accent { color: var(--color-accent); text-decoration: underline; text-underline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }
.br-desktop { display: none; }
@media (min-width: 768px) { .br-desktop { display: block; } }

/* ═══════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.6em 1.4em;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: color var(--transition), background var(--transition),
              border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
  line-height: 1.5;
  font-family: var(--font-body);
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-accent);
  color: #050810;
  font-weight: 600;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  background: var(--color-surface);
}

.btn-lg {
  padding: 0.75em 1.8em;
  font-size: var(--text-base);
}
.btn-full { width: 100%; justify-content: center; }

/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: box-shadow var(--transition-slow), border-color var(--transition-slow);
}
.nav--scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  height: 64px;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 4vw, var(--space-12));
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.logo-svg {
  width: 80px;
  height: 21px;
  display: none; /* Show only the text logo for simplicity */
}
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.beta-badge {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 1px 6px;
  margin-left: 6px;
  vertical-align: super;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-left: var(--space-4);
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.nav-links a:hover { color: var(--color-text); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  margin-left: auto;
}
.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-mobile { display: none; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-actions { display: none; }
  .nav-mobile-toggle { display: flex; }

  .nav-mobile {
    display: none;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
    border-top: 1px solid var(--color-border-subtle);
    background: var(--color-surface);
  }
  .nav-mobile.open { display: flex; }
  .nav-mobile a {
    font-size: var(--text-base);
    padding: var(--space-3) 0;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-divider);
    transition: color var(--transition);
  }
  .nav-mobile a:last-child { border-bottom: none; }
  .nav-mobile a:hover { color: var(--color-text); }
}

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: var(--space-32) var(--space-24);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.7;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: 1000px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-subtle);
  border: 1px solid color-mix(in oklab, var(--color-accent) 30%, transparent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  width: fit-content;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
  animation: fadeSlideUp 0.6s cubic-bezier(0.16,1,0.3,1) both;
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--color-accent-glow); }
  50% { opacity: 0.7; box-shadow: 0 0 0 4px transparent; }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  animation: fadeSlideUp 0.7s 0.1s cubic-bezier(0.16,1,0.3,1) both;
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.6;
  animation: fadeSlideUp 0.7s 0.2s cubic-bezier(0.16,1,0.3,1) both;
}

.hero-ctas {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  animation: fadeSlideUp 0.7s 0.3s cubic-bezier(0.16,1,0.3,1) both;
}

.hero-metrics {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  flex-wrap: wrap;
  gap: var(--space-6);
  animation: fadeSlideUp 0.7s 0.4s cubic-bezier(0.16,1,0.3,1) both;
}
.hero-metric {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.metric-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
}
.metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero-metric-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0.4;
}
.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  margin: 0 auto;
  animation: scrollFade 2s ease-in-out infinite;
}
@keyframes scrollFade {
  0% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════
   TRUST STRIP
   ═══════════════════════════════════════════ */
.trust-strip {
  padding-block: var(--space-8);
  border-block: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}
.trust-strip .container {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  flex-wrap: wrap;
}
.trust-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  font-weight: 500;
  white-space: nowrap;
  max-width: none;
}
.trust-logos {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.trust-logo {
  color: var(--color-text-faint);
  opacity: 0.5;
  transition: opacity var(--transition);
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: var(--font-display);
}
.trust-logo:hover { opacity: 0.8; }
.trust-logo svg { height: 20px; width: auto; }

/* ═══════════════════════════════════════════
   SECTIONS (shared)
   ═══════════════════════════════════════════ */
.section {
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
}

.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-12), 6vw, var(--space-20));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1.15;
}
.section-tag {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.section-tag::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  text-align: center;
  line-height: 1.7;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.16,1,0.3,1), transform 0.65s cubic-bezier(0.16,1,0.3,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   HOW IT WORKS - Pipeline
   ═══════════════════════════════════════════ */
.how-it-works { background: var(--color-surface); }

.pipeline-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: var(--space-4);
  align-items: start;
  margin-bottom: var(--space-16);
}

.pipeline-step {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.pipeline-step:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.step-icon {
  width: 44px;
  height: 44px;
  color: var(--color-text-muted);
}
.step-icon svg { width: 100%; height: 100%; }

.step-number {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  font-weight: 600;
}
.pipeline-step h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
}
.pipeline-step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 38ch;
}
.step-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}
.step-details li {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-display);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: none;
}
.step-details li::before {
  content: '─';
  color: var(--color-accent);
  font-size: 0.75em;
  flex-shrink: 0;
}

.pipeline-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: var(--space-12);
  gap: var(--space-2);
  min-width: 80px;
}
.arrow-line {
  width: 40px;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), var(--color-secondary));
  position: relative;
}
.arrow-line::after {
  content: '';
  position: absolute;
  right: -6px;
  top: -4px;
  border-left: 7px solid var(--color-secondary);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}
.arrow-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* Metrics JSON block */
.metrics-output {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg);
  max-width: 680px;
  margin: 0 auto;
}
.code-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface-raised);
  border-bottom: 1px solid var(--color-border);
}
.code-dots {
  display: flex;
  gap: var(--space-2);
}
.code-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
}
.code-title {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-left: var(--space-2);
}
.code-block {
  padding: var(--space-6) var(--space-8);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  line-height: 1.9;
  overflow-x: auto;
  white-space: pre;
  max-width: none;
}
.code-block code { max-width: none; }
.json-key { color: #7dd3fc; }
.json-num { color: var(--color-text-muted); }
.json-str { color: #86efac; }
.json-accent { color: var(--color-accent); font-weight: 600; }
.json-brace { color: var(--color-text-faint); }
.json-comment { color: var(--color-text-faint); font-style: italic; }
[data-theme="light"] .json-key { color: #0369a1; }
[data-theme="light"] .json-num { color: var(--color-text-muted); }
[data-theme="light"] .json-str { color: #15803d; }
[data-theme="light"] .json-accent { color: var(--color-accent); }
[data-theme="light"] .json-brace { color: #94a3b8; }
[data-theme="light"] .json-comment { color: #94a3b8; }

/* Responsive pipeline */
@media (max-width: 900px) {
  .pipeline-diagram {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .pipeline-arrow {
    flex-direction: row;
    justify-content: flex-start;
    padding-top: 0;
    padding-left: var(--space-8);
    padding-block: var(--space-2);
  }
  .arrow-line {
    width: 28px;
    height: 2px;
    transform: rotate(90deg);
  }
  .arrow-line::after {
    right: -6px;
    top: -4px;
  }
  .arrow-label { display: none; }
}

/* ═══════════════════════════════════════════
   FEATURES GRID
   ═══════════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  align-items: stretch;
}
.feature-card--large {
  grid-column: span 1;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-card--large {
    grid-column: span 1;
  }
}
@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-card-inner {
  padding: var(--space-8);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.feature-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid color-mix(in oklab, var(--color-accent) 25%, transparent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  width: fit-content;
}
.feature-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}
.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.feature-icon {
  width: 36px;
  height: 36px;
  color: var(--color-accent);
}
.feature-icon svg { width: 100%; height: 100%; }

/* Compression bars visual */
.feature-visual {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-5);
}
.compression-bars {
  display: flex;
  gap: var(--space-4);
  align-items: flex-end;
  height: 80px;
}
.bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  height: 100%;
  justify-content: flex-end;
}
.bar {
  width: 32px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: height var(--transition-slow);
}
.bar-before {
  height: var(--h);
  background: var(--color-border);
  max-height: 72px;
}
.bar-after {
  height: var(--h);
  background: var(--color-accent);
  max-height: 72px;
  box-shadow: 0 0 12px var(--color-accent-glow);
}
.bar-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-display);
  max-width: none;
}
.compression-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
}
.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
}
.stat-unit {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-display);
}

/* ABR ladder */
.abr-ladder {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-4);
}
.ladder-rung {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.ladder-rung span {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  width: 40px;
  flex-shrink: 0;
}
.rung-bar {
  height: 8px;
  width: var(--w);
  background: linear-gradient(to right, var(--color-accent), var(--color-secondary));
  border-radius: var(--radius-full);
  opacity: 0.7;
  transition: opacity var(--transition);
}
.feature-card:hover .rung-bar { opacity: 1; }

/* Billing tiers */
.billing-tiers {
  display: flex;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-4);
  flex-wrap: wrap;
}
.billing-tier {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  flex: 1;
  min-width: 70px;
}
.billing-tier--accent {
  border-color: color-mix(in oklab, var(--color-accent) 30%, transparent);
  background: var(--color-accent-subtle);
}
.tier-badge {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}
.billing-tier--accent .tier-badge { color: var(--color-accent); }
.tier-desc {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  max-width: none;
}

/* ═══════════════════════════════════════════
   STATS
   ═══════════════════════════════════════════ */
.stats-section {
  background: var(--color-surface);
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
@media (max-width: 900px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .stats-grid { grid-template-columns: 1fr; } }

.stat-card {
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  background: var(--color-surface-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.stat-number {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
  letter-spacing: -0.03em;
}
.stat-number .stat-unit {
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-text-muted);
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.5;
  max-width: 26ch;
}

/* ═══════════════════════════════════════════
   USE CASES
   ═══════════════════════════════════════════ */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 900px) { .use-cases-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .use-cases-grid { grid-template-columns: 1fr; } }

.use-case {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.use-case:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.use-case-icon {
  width: 40px;
  height: 40px;
  color: var(--color-text-muted);
}
.use-case-icon svg { width: 100%; height: 100%; }
.use-case h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}
.use-case p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ═══════════════════════════════════════════
   PRICING
   ═══════════════════════════════════════════ */
.pricing { background: var(--color-surface); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: start;
}
@media (max-width: 780px) { .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; } }

.pricing-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.pricing-card:hover { transform: translateY(-2px); }
.pricing-card--featured {
  border-color: color-mix(in oklab, var(--color-accent) 35%, transparent);
  background: var(--color-surface-raised);
  box-shadow: 0 0 40px var(--color-accent-glow), var(--shadow-md);
}
.pricing-featured-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #050810;
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-display);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.pricing-tier-label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
}
.pricing-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}
.price-amount {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--color-text);
}
.price-period {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}
.pricing-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: none;
}
.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.pricing-features li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: none;
}
.pricing-features li::before {
  content: '';
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='8' cy='8' r='7' stroke='%2300cfe8' stroke-width='1.5'/%3E%3Cpath d='M5 8l2 2 4-4' stroke='%2300cfe8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
.pricing-note {
  text-align: center;
  margin-top: var(--space-10);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  max-width: 60ch;
  margin-inline: auto;
}

/* ═══════════════════════════════════════════
   FAQ
   ═══════════════════════════════════════════ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.faq-item {
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition);
  background: var(--color-surface);
}
.faq-item[open] { border-color: var(--color-border); }
.faq-item summary {
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  transition: color var(--transition);
  max-width: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: var(--text-xl);
  color: var(--color-accent);
  line-height: 1;
  flex-shrink: 0;
  font-weight: 300;
  transition: transform var(--transition);
  font-family: var(--font-display);
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item summary:hover { color: var(--color-accent); }
.faq-item p {
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: none;
}

/* ═══════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════ */
.cta-section { background: var(--color-bg); }
.cta-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-12), 8vw, var(--space-24));
  overflow: hidden;
  text-align: center;
}
.cta-glow {
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.cta-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}
.cta-card h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1.15;
}
.cta-card p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 50ch;
  text-align: center;
}
.cta-form {
  display: flex;
  gap: var(--space-3);
  width: 100%;
  max-width: 520px;
  flex-wrap: wrap;
}
.cta-input {
  flex: 1;
  min-width: 220px;
  padding: 0.7em 1.2em;
  font-size: var(--text-base);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.cta-input::placeholder { color: var(--color-text-faint); }
.cta-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}
.cta-fine {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  padding-block: var(--space-16) var(--space-10);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-divider);
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: var(--space-10); } }

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.footer-logo { margin-bottom: var(--space-2); }
.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 30ch;
}
.footer-legal {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: auto;
  max-width: none;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
@media (max-width: 500px) { .footer-links { grid-template-columns: 1fr 1fr; } }

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col h4 {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--color-text); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-legal-bottom {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer-tech {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ═══════════════════════════════════════════
   ABOUT SECTION
   ═══════════════════════════════════════════ */
.about { background: var(--color-surface); }

.about-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  max-width: var(--content-default);
  margin-inline: auto;
}

/* Mission */
.about-mission {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.about-mission h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
}
.about-mission p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}
.about-callout {
  margin-top: var(--space-3);
  padding: var(--space-6) var(--space-8);
  border-left: 3px solid var(--color-accent);
  background: var(--color-accent-subtle);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: none;
}
.about-callout strong {
  color: var(--color-accent);
  font-weight: 600;
}
.about-callout em {
  font-style: italic;
  color: var(--color-text);
}
.about-callout-link {
  color: #5ee2c2;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(94, 226, 194, 0.4);
  transition: color 0.15s ease, border-bottom-color 0.15s ease;
}
.about-callout-link:hover {
  color: #8ff0d8;
  border-bottom-color: #8ff0d8;
}

/* Company card */
.about-company-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.about-company-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.about-company-header {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.about-company-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}
.about-company-header h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
}
.about-location {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}
.about-company-card > p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: none;
}

/* Expertise grid */
.about-expertise {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-2);
}
@media (max-width: 560px) { .about-expertise { grid-template-columns: 1fr; } }

.expertise-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
}
.expertise-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.expertise-desc {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-display);
  max-width: none;
}

/* Founder card */
.about-founder-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.about-founder-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.about-founder-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}
.about-role {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  font-family: var(--font-display);
}
.about-founder-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: none;
}

/* SPAIQ credit */
.about-credit {
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
}
.about-credit p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  text-align: center;
  max-width: none;
}

@media (max-width: 600px) {
  .about-company-card,
  .about-founder-card {
    padding: var(--space-6);
  }
}

/* ═══ DEMOS ═══ */
.demos { background: var(--color-surface); }
.demos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 900px) { .demos-grid { grid-template-columns: 1fr; } }

.demo-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
}
.demo-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.demo-thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
}
.demo-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.demo-card:hover .demo-thumb img { transform: scale(1.03); }

.demo-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}
.demo-play svg {
  width: 56px;
  height: 56px;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 50%;
  padding: 12px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  transition: background 0.2s, transform 0.2s;
}
.demo-card:hover .demo-play svg {
  background: var(--color-accent);
  color: #0a0e17;
  transform: scale(1.06);
}

.demo-meta {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}
.demo-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}
.demo-meta h3 {
  font-size: 1.15rem;
  line-height: 1.3;
  margin: 0;
}
.demo-meta p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}
.demo-meta .link-accent {
  margin-top: var(--space-2);
  font-size: 0.9rem;
}

.demos-note {
  text-align: center;
  margin: var(--space-8) auto 0;
  max-width: 720px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}