/* ============================================================
   QuantArth — Design System
   All brand tokens, layout, and component styles.
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Background palette */
  --color-bg-base:        #06090f;
  --color-bg-elevated:    #0b1120;
  --color-bg-card:        #0f1929;
  --color-bg-card-border: rgba(255, 255, 255, 0.06);

  /* Accent palette */
  --color-accent-primary:   #00d4ff;   /* electric cyan */
  --color-accent-secondary: #0ea5e9;   /* sky blue */
  --color-accent-tertiary:  #6366f1;   /* indigo-violet */
  --color-accent-teal:      #14b8a6;   /* teal */

  /* Text palette */
  --color-text-primary:   #f0f4ff;
  --color-text-secondary: #8fa3c8;
  --color-text-muted:     #4a6080;
  --color-text-label:     #00d4ff;

  /* Glow */
  --glow-cyan:   rgba(0, 212, 255, 0.18);
  --glow-indigo: rgba(99, 102, 241, 0.15);
  --glow-teal:   rgba(20, 184, 166, 0.12);

  /* Typography */
  --font-display: 'Outfit', 'Inter', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --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;

  /* Radii */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   32px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   500ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index layers */
  --z-base:    0;
  --z-canvas:  1;
  --z-content: 10;
  --z-header:  100;
  --z-overlay: 200;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }

/* ── Skip Link ────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-primary);
  color: var(--color-bg-base);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  z-index: var(--z-overlay);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

/* ── Focus Ring ────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Layout Utilities ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ── Background Canvas ────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: var(--z-canvas);
  pointer-events: none;
  opacity: 0.4;
}

/* ── Site Wrapper ─────────────────────────────────────────── */
.site-wrapper {
  position: relative;
  z-index: var(--z-content);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.site-wrapper::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0, 212, 255, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(99, 102, 241, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 10% 70%, rgba(20, 184, 166, 0.05) 0%, transparent 55%);
  pointer-events: none;
}

/* ════════════════════════════════════════════════════════════
   HEADER
   ════════════════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  padding-block: var(--space-4);
  background: rgba(6, 9, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* ── Logo ─────────────────────────────────────────────────── */
.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: opacity var(--transition-base);
  flex-shrink: 0;
}
.logo-link:hover,
.logo-link:focus-visible { opacity: 0.85; }

.logo-icon { width: 38px; height: 38px; flex-shrink: 0; }

.logo-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}
.logo-wordmark span { color: var(--color-accent-primary); }

/* ── Primary Nav ──────────────────────────────────────────── */
.primary-nav { display: flex; align-items: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-base), background var(--transition-base);
}
.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* ── Mobile Toggle ────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base), background var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: var(--color-accent-primary); }

/* ── Mobile Nav Drawer ────────────────────────────────────── */
.mobile-nav {
  display: none;
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav.open { max-height: 300px; }

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-6) var(--space-6);
  gap: var(--space-1);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-base), background var(--transition-base);
}
.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 100%);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-full);
  box-shadow:
    0 0 0 1px rgba(0, 212, 255, 0.3),
    0 0 28px rgba(0, 212, 255, 0.2),
    0 4px 16px rgba(0, 0, 0, 0.4);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    opacity var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0);
  transition: background var(--transition-base);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(0, 212, 255, 0.5),
    0 0 40px rgba(0, 212, 255, 0.3),
    0 8px 24px rgba(0, 0, 0, 0.5);
}
.btn-primary:hover::after { background: rgba(255, 255, 255, 0.06); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-secondary);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition:
    transform var(--transition-base),
    color var(--transition-base),
    background var(--transition-base),
    border-color var(--transition-base);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}
.btn-secondary:active { transform: translateY(0); }

.btn-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}
.btn-primary:hover .btn-icon { transform: translateX(3px); }

/* ════════════════════════════════════════════════════════════
   HERO SECTION
   ════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  z-index: var(--z-content);
  padding-block: var(--space-20) var(--space-24);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  width: 100%;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.hero-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-label);
  opacity: 0;
  transform: translateY(12px);
  animation: fade-up 0.7s ease 0.1s forwards;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  opacity: 0;
  transform: translateY(16px);
  animation: fade-up 0.7s ease 0.2s forwards;
}

.hero-headline .highlight {
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 50%, var(--color-accent-tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-body {
  font-size: var(--text-lg);
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 50ch;
  opacity: 0;
  transform: translateY(16px);
  animation: fade-up 0.7s ease 0.35s forwards;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  opacity: 0;
  transform: translateY(16px);
  animation: fade-up 0.7s ease 0.5s forwards;
}

.cta-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  opacity: 0;
  animation: fade-in 1s ease 0.6s forwards;
}

.hero-svg-scene {
  width: 100%;
  max-width: 520px;
  height: auto;
  filter: drop-shadow(0 0 40px rgba(0, 212, 255, 0.12));
}

/* ════════════════════════════════════════════════════════════
   SECTION SHARED STYLES
   ════════════════════════════════════════════════════════════ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-label);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  line-height: 1.15;
}

.section-description {
  margin-top: var(--space-6);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 60ch;
  margin-inline: auto;
}

/* Section divider line */
.products-section,
.why-section,
.roadmap-section,
.about-section,
.contact-section {
  position: relative;
  z-index: var(--z-content);
  padding-block: var(--space-20) var(--space-24);
}

.products-section::before,
.why-section::before,
.roadmap-section::before,
.about-section::before,
.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.12), transparent);
}

/* ════════════════════════════════════════════════════════════
   PRODUCTS SECTION
   ════════════════════════════════════════════════════════════ */
.product-spotlight {
  background: var(--color-bg-card);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
}

.product-spotlight::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(0, 212, 255, 0.04), transparent 60%);
  pointer-events: none;
}

.product-spotlight-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  padding: var(--space-12);
  align-items: start;
}

.product-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-accent-primary);
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.product-badge-icon {
  width: 14px;
  height: 14px;
  color: var(--color-accent-primary);
}

.product-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 2.5vw, var(--text-3xl));
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.product-description {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 46ch;
}

.product-note {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-8);
}

.product-note-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent-tertiary);
}

.product-note p {
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-text-muted);
}

/* Capability Cards */
.capability-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.capability-card {
  padding: var(--space-6);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-lg);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.capability-card:hover {
  transform: translateX(4px);
  border-color: rgba(0, 212, 255, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.cap-card-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(0, 212, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cap-card-icon {
  width: 22px;
  height: 22px;
  color: var(--color-accent-primary);
}

.capability-card:nth-child(2) .cap-card-icon-wrap { background: rgba(99, 102, 241, 0.08); }
.capability-card:nth-child(2) .cap-card-icon { color: var(--color-accent-tertiary); }
.capability-card:nth-child(3) .cap-card-icon-wrap { background: rgba(20, 184, 166, 0.08); }
.capability-card:nth-child(3) .cap-card-icon { color: var(--color-accent-teal); }

.cap-card-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.cap-card-body {
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-text-secondary);
}

/* ════════════════════════════════════════════════════════════
   WHY SECTION — theme cards
   ════════════════════════════════════════════════════════════ */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.theme-card {
  position: relative;
  padding: var(--space-8);
  background: var(--color-bg-card);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.theme-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(ellipse at top left, var(--card-glow, transparent), transparent 65%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.theme-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

.theme-card--ai    { --card-glow: rgba(0, 212, 255, 0.1); }
.theme-card--fin   { --card-glow: rgba(99, 102, 241, 0.1); }
.theme-card--trust { --card-glow: rgba(20, 184, 166, 0.1); }

.card-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  flex-shrink: 0;
}

.theme-card--ai    .card-icon-wrap { background: rgba(0, 212, 255, 0.1); }
.theme-card--fin   .card-icon-wrap { background: rgba(99, 102, 241, 0.1); }
.theme-card--trust .card-icon-wrap { background: rgba(20, 184, 166, 0.1); }

.card-icon { width: 26px; height: 26px; }

.theme-card--ai    .card-icon { color: var(--color-accent-primary); }
.theme-card--fin   .card-icon { color: var(--color-accent-tertiary); }
.theme-card--trust .card-icon { color: var(--color-accent-teal); }

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.card-body {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.theme-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  height: 2px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  transform: scaleX(0);
  transition: transform var(--transition-slow);
  transform-origin: left;
}

.theme-card--ai::after    { background: linear-gradient(90deg, var(--color-accent-primary), transparent); }
.theme-card--fin::after   { background: linear-gradient(90deg, var(--color-accent-tertiary), transparent); }
.theme-card--trust::after { background: linear-gradient(90deg, var(--color-accent-teal), transparent); }
.theme-card:hover::after  { transform: scaleX(1); }

/* ════════════════════════════════════════════════════════════
   ROADMAP SECTION
   ════════════════════════════════════════════════════════════ */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-4);
}

.roadmap-card {
  position: relative;
  padding: var(--space-8);
  background: var(--color-bg-card);
  border: 1px solid var(--color-bg-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.roadmap-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.roadmap-card-number {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: rgba(255, 255, 255, 0.03);
  letter-spacing: -0.04em;
  line-height: 1;
  user-select: none;
}

.roadmap-card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.08);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  color: var(--color-accent-tertiary);
}

.roadmap-card-icon svg { width: 28px; height: 28px; }

.roadmap-card:nth-child(1) .roadmap-card-icon { background: rgba(0, 212, 255, 0.08); color: var(--color-accent-primary); }
.roadmap-card:nth-child(3) .roadmap-card-icon { background: rgba(20, 184, 166, 0.08); color: var(--color-accent-teal); }

.roadmap-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.roadmap-card-body {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.roadmap-tag {
  display: inline-block;
  padding: 3px var(--space-3);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(129, 140, 248, 0.8);
  letter-spacing: 0.04em;
}

/* ════════════════════════════════════════════════════════════
   ABOUT SECTION
   ════════════════════════════════════════════════════════════ */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-16);
  align-items: center;
}

.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual-graphic {
  width: 100%;
  max-width: 260px;
}

.about-content { display: flex; flex-direction: column; gap: var(--space-6); }
.about-content .section-header { text-align: left; margin-bottom: 0; }

.about-body {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ════════════════════════════════════════════════════════════
   CONTACT SECTION
   ════════════════════════════════════════════════════════════ */
.contact-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.contact-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-title { text-align: left; }

.contact-description {
  font-size: var(--text-lg);
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.contact-email-block {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.contact-email-icon {
  width: 22px;
  height: 22px;
  color: var(--color-accent-primary);
  flex-shrink: 0;
}

.contact-email {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-accent-primary);
  transition: opacity var(--transition-base);
}
.contact-email:hover { opacity: 0.8; }

.contact-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-glow-orb {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(0, 212, 255, 0.1) 0%,
    rgba(99, 102, 241, 0.07) 40%,
    transparent 70%
  );
  box-shadow:
    0 0 60px rgba(0, 212, 255, 0.08),
    inset 0 0 40px rgba(99, 102, 241, 0.05);
  animation: float 8s ease-in-out infinite;
  position: relative;
}

.contact-glow-orb::before {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.12);
  animation: rotate-slow 20s linear infinite;
}

.contact-glow-orb::after {
  content: '';
  position: absolute;
  inset: 50px;
  border-radius: 50%;
  border: 1px solid rgba(99, 102, 241, 0.1);
  animation: rotate-slow 14s linear infinite reverse;
}

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
.site-footer {
  position: relative;
  z-index: var(--z-content);
  padding-block: var(--space-12) var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: var(--space-6);
}

.footer-brand { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-logo { display: inline-flex; }

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-nav-list { display: flex; flex-direction: column; gap: var(--space-3); }

.footer-nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.footer-nav-link:hover,
.footer-nav-link:focus-visible { color: var(--color-text-secondary); }

.footer-contact-block { display: flex; flex-direction: column; gap: var(--space-2); }

.footer-contact-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.footer-email-link {
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
  transition: opacity var(--transition-base);
}
.footer-email-link:hover { opacity: 0.75; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-legal-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.footer-legal-link:hover,
.footer-legal-link:focus-visible { color: var(--color-text-secondary); }

.footer-legal-sep { color: var(--color-text-muted); }

/* ════════════════════════════════════════════════════════════
   KEYFRAMES
   ════════════════════════════════════════════════════════════ */
@keyframes fade-up {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

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

@keyframes shimmer {
  0%   { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -200; }
}

/* Hero SVG animations */
.orbit-ring         { animation: rotate-slow 18s linear infinite; transform-origin: center; }
.orbit-ring-reverse { animation: rotate-slow 24s linear infinite reverse; transform-origin: center; }

.data-flow      { stroke-dasharray: 8 16; animation: shimmer 2.5s linear infinite; }
.data-flow-slow { stroke-dasharray: 6 20; animation: shimmer 3.5s linear infinite; }
.float-group    { animation: float 6s ease-in-out infinite; }

/* Scroll-driven reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.22s; }
.reveal--delay-3 { transition-delay: 0.34s; }

/* ════════════════════════════════════════════════════════════
   REDUCED MOTION
   ════════════════════════════════════════════════════════════ */
@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; }

  .hero-label,
  .hero-headline,
  .hero-body,
  .hero-cta-group,
  .hero-visual {
    opacity: 1;
    transform: none;
    animation: none;
  }

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

  #bg-canvas { display: none; }
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet ≤ 1024px
   ════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .primary-nav { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: block; }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }
  .hero-text { align-items: center; }
  .hero-body { max-width: 60ch; }
  .cta-row   { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-svg-scene { max-width: 380px; }

  .product-spotlight-inner {
    grid-template-columns: 1fr;
  }

  .themes-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin-inline: auto;
  }

  .roadmap-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin-inline: auto;
  }

  .about-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about-visual { order: -1; }
  .about-content .section-header { text-align: center; }

  .contact-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .contact-title    { text-align: center; }
  .contact-email-block { justify-content: center; }
  .contact-visual { order: -1; }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand { grid-column: 1 / -1; }
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile ≤ 640px
   ════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  .container { padding-inline: var(--space-4); }

  .hero { padding-block: var(--space-12) var(--space-16); }
  .hero-headline { font-size: clamp(var(--text-3xl), 8vw, var(--text-4xl)); }
  .hero-body     { font-size: var(--text-base); }
  .hero-svg-scene { max-width: 280px; }

  .products-section,
  .why-section,
  .roadmap-section,
  .about-section,
  .contact-section { padding-block: var(--space-16); }

  .section-title { font-size: var(--text-2xl); }

  .product-spotlight-inner { padding: var(--space-6); }

  .btn-primary,
  .btn-secondary { width: 100%; justify-content: center; }
  .cta-row { width: 100%; flex-direction: column; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* ════════════════════════════════════════════════════════════
   LEGAL PAGES (privacy.html, terms.html)
   ════════════════════════════════════════════════════════════ */
.legal-page {
  position: relative;
  z-index: var(--z-content);
  padding-block: var(--space-16) var(--space-24);
}

.legal-inner {
  max-width: 780px;
  margin-inline: auto;
}

.legal-page-header {
  margin-bottom: var(--space-12);
}

.legal-meta {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.legal-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.legal-section h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.015em;
}

.legal-section p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.legal-section p:last-child { margin-bottom: 0; }

.legal-section ul {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.legal-section ul li {
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.legal-section a {
  color: var(--color-accent-primary);
  text-decoration: underline;
  text-decoration-color: rgba(0, 212, 255, 0.35);
  transition: opacity var(--transition-base);
}
.legal-section a:hover { opacity: 0.8; }

.legal-footer-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg-base); }
::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.2); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.35); }

/* ── Selection ────────────────────────────────────────────── */
::selection {
  background: rgba(0, 212, 255, 0.2);
  color: var(--color-text-primary);
}