/* ═══════════════════════════════════════════════════════════════
   CodeHumanist — Design System
   Dark mode · Purple #6B21A8 · Syne + Inter typography
   ═══════════════════════════════════════════════════════════════ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Brand purples */
  --purple-900: #3B0764;
  --purple-800: #4C0D8F;
  --purple-700: #6B21A8;    /* brand primary */
  --purple-600: #7E22CE;
  --purple-500: #9333EA;
  --purple-400: #A855F7;
  --purple-300: #C084FC;
  --purple-200: #DDD6FE;
  --purple-100: #F3E8FF;

  /* Backgrounds */
  --bg-void:    #040108;
  --bg-base:    #07020F;
  --bg-surface: #0C0519;
  --bg-raised:  #130828;
  --bg-card:    #16092E;
  --bg-hover:   #1D0D3D;

  /* Borders */
  --border-subtle:  rgba(107, 33, 168, 0.18);
  --border-default: rgba(147, 51, 234, 0.28);
  --border-active:  rgba(192, 132, 252, 0.45);

  /* Text */
  --text-primary:   #F0EAFF;
  --text-secondary: #B5A3D4;
  --text-muted:     #6E5B8E;
  --text-faint:     #3D2C5A;

  /* Accent */
  --accent-glow:  rgba(147, 51, 234, 0.35);
  --accent-pulse: rgba(192, 132, 252, 0.6);

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* 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;

  /* Radii */
  --radius-sm: 4px;
  --radius:    8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-glow-sm:  0 0 20px rgba(107, 33, 168, 0.25);
  --shadow-glow:     0 0 40px rgba(107, 33, 168, 0.35);
  --shadow-glow-lg:  0 0 80px rgba(107, 33, 168, 0.4);
  --shadow-card:     0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 8px 48px rgba(107, 33, 168, 0.3);

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:    cubic-bezier(0.4, 0, 1, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration:      250ms;
  --duration-slow: 450ms;

  /* Layout */
  --container-max: 1120px;
  --container-pad: clamp(1.25rem, 5vw, 2.5rem);
  --nav-height: 68px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg { display: block; }

ul { list-style: none; }

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* ── Typography Scale ───────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.35rem); font-weight: 700; }

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Container ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Sections ───────────────────────────────────────────────── */
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section-header {
  max-width: 680px;
  margin-bottom: var(--space-12);
}

.section-header h2 {
  margin-top: var(--space-3);
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple-400);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  background: rgba(107, 33, 168, 0.08);
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--duration) var(--ease-out),
              border-color var(--duration) var(--ease-out),
              backdrop-filter var(--duration) var(--ease-out);
}

.nav.scrolled {
  background: rgba(7, 2, 15, 0.85);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-hex {
  flex-shrink: 0;
  transition: filter var(--duration) var(--ease-out);
}

.logo:hover .logo-hex {
  filter: drop-shadow(0 0 8px rgba(147, 51, 234, 0.7));
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.nav-link:hover { color: var(--text-primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform var(--duration) var(--ease-out),
              opacity var(--duration) var(--ease-out);
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--duration) var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--duration-fast);
}

.btn:hover::before { background: rgba(255,255,255,0.06); }
.btn:active::before { background: rgba(255,255,255,0.1); }

.btn-primary {
  background: var(--purple-700);
  color: #fff;
  border: 1px solid var(--purple-600);
  box-shadow: 0 0 0 0 var(--accent-glow);
  padding: var(--space-3) var(--space-6);
  font-size: 0.9rem;
}

.btn-primary:hover {
  background: var(--purple-600);
  border-color: var(--purple-500);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-1px);
}

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

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.8rem;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

.btn-icon {
  transition: transform var(--duration-fast) var(--ease-out);
  font-style: normal;
}

.btn:hover .btn-icon { transform: translateX(3px); }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.6;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(800px, 120vw);
  height: min(600px, 80vw);
  background: radial-gradient(
    ellipse at center,
    rgba(107, 33, 168, 0.22) 0%,
    rgba(59, 7, 100, 0.12) 40%,
    transparent 70%
  );
  pointer-events: none;
  animation: glow-pulse 6s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 1;   transform: translate(-50%, -50%) scale(1.08); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-20);
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--purple-300);
  background: rgba(107, 33, 168, 0.1);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  margin-bottom: var(--space-8);
}

.badge-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--purple-400);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(168, 85, 247, 0.6); }
  50%       { box-shadow: 0 0 0 5px rgba(168, 85, 247, 0); }
}

.hero-headline {
  margin-bottom: var(--space-6);
  line-height: 1.08;
}

.headline-accent {
  background: linear-gradient(135deg, var(--purple-300) 0%, var(--purple-400) 50%, #E879F9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  line-height: 1.4;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

/* ── Waitlist Form ──────────────────────────────────────────── */
.hero-cta { margin-bottom: var(--space-8); }

.waitlist-form { display: flex; flex-direction: column; gap: var(--space-3); }

.input-group {
  display: flex;
  gap: var(--space-2);
  max-width: 520px;
}

.email-input {
  flex: 1;
  min-width: 0;
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-default);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color var(--duration) var(--ease-out),
              background var(--duration) var(--ease-out),
              box-shadow var(--duration) var(--ease-out);
  outline: none;
}

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

.email-input:focus {
  border-color: var(--purple-500);
  background: rgba(107, 33, 168, 0.06);
  box-shadow: 0 0 0 3px rgba(107, 33, 168, 0.15);
}

.email-input:invalid:not(:placeholder-shown) {
  border-color: rgba(248, 113, 113, 0.5);
}

.input-group--large .email-input,
.input-group--large .btn { padding-block: var(--space-4); font-size: 1rem; }

.form-note {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin: 0;
}

.form-feedback {
  font-size: 0.825rem;
  min-height: 1.2em;
  padding: 0 var(--space-1);
  transition: color var(--duration);
}

.form-feedback.success { color: #86efac; }
.form-feedback.error   { color: #fca5a5; }

/* ── Trust Badge ────────────────────────────────────────────── */
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: var(--space-2) var(--space-4);
  border: 1px solid rgba(107, 33, 168, 0.2);
  border-radius: var(--radius-full);
  background: rgba(107, 33, 168, 0.05);
}

.trust-badge strong { color: var(--purple-300); }

/* ── Hero Scroll Hint ───────────────────────────────────────── */
.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  opacity: 0.35;
  animation: scroll-fade 3s ease-in-out infinite;
}

.hero-scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--purple-300);
}

.scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--purple-400), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-fade {
  0%, 100% { opacity: 0.35; }
  50%       { opacity: 0.6; }
}

@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── Problem Section ────────────────────────────────────────── */
.problem {
  background: linear-gradient(
    to bottom,
    var(--bg-base),
    var(--bg-surface)
  );
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.problem-text h2 {
  margin-block: var(--space-4) var(--space-6);
}

.problem-text p + p { margin-top: var(--space-4); }

.problem-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.stat-card {
  padding: var(--space-6) var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color var(--duration) var(--ease-out),
              box-shadow var(--duration) var(--ease-out);
}

.stat-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-card);
}

.stat-card--highlight {
  border-color: var(--border-default);
  background: rgba(107, 33, 168, 0.08);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--purple-300);
  line-height: 1;
  margin-bottom: var(--space-2);
  letter-spacing: -0.03em;
}

.stat-unit {
  font-size: 0.6em;
  font-weight: 700;
  opacity: 0.8;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Features Grid ──────────────────────────────────────────── */
.features {
  background: var(--bg-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

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

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(107, 33, 168, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.feature-card--primary {
  border-color: rgba(147, 51, 234, 0.35);
  background: rgba(107, 33, 168, 0.1);
}

.feature-card--primary::before {
  background: linear-gradient(135deg, rgba(107, 33, 168, 0.15) 0%, transparent 50%);
}

.feature-card--accent {
  border-color: rgba(232, 121, 249, 0.25);
  background: rgba(232, 121, 249, 0.04);
}

.feature-card--accent::before {
  background: linear-gradient(135deg, rgba(232, 121, 249, 0.08) 0%, transparent 50%);
}

.feature-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: rgba(107, 33, 168, 0.15);
  border: 1px solid var(--border-default);
  color: var(--purple-300);
  margin-bottom: var(--space-5);
  flex-shrink: 0;
  transition: background var(--duration), box-shadow var(--duration);
}

.feature-card:hover .feature-icon-wrap {
  background: rgba(107, 33, 168, 0.25);
  box-shadow: 0 0 16px rgba(107, 33, 168, 0.3);
}

.feature-card-content h3 {
  margin-bottom: var(--space-3);
  font-size: 1.2rem;
}

.feature-card-content p {
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: var(--space-5);
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.825rem;
  color: var(--text-muted);
}

.feature-list li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--purple-500);
  flex-shrink: 0;
}

.feature-card-tag {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--purple-300);
  background: rgba(107, 33, 168, 0.15);
  border: 1px solid var(--border-default);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

.feature-card-tag--new {
  color: #86efac;
  background: rgba(134, 239, 172, 0.08);
  border-color: rgba(134, 239, 172, 0.2);
}

/* ── Personas Grid ──────────────────────────────────────────── */
.personas {
  background: var(--bg-base);
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.persona-card {
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration) var(--ease-out),
              box-shadow var(--duration) var(--ease-out),
              transform var(--duration) var(--ease-out);
}

.persona-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.persona-card--wide {
  grid-column: span 2;
}

.persona-emoji {
  font-size: 1.75rem;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.persona-card h3 {
  font-size: 1rem;
  margin-bottom: var(--space-2);
}

.persona-card p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ── Trust Section ──────────────────────────────────────────── */
.trust-section {
  background: linear-gradient(
    to bottom,
    var(--bg-surface),
    var(--bg-base)
  );
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.trust-block {
  max-width: 680px;
  margin-inline: auto;
  text-align: center;
}

.trust-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  background: rgba(107, 33, 168, 0.1);
  border: 1px solid var(--border-default);
  color: var(--purple-300);
  margin-bottom: var(--space-6);
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.trust-block h2 { margin-bottom: var(--space-4); }

.trust-statement {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
}

.trust-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: var(--space-10);
  max-width: 540px;
  margin-inline: auto;
}

.trust-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  text-align: left;
  margin-top: var(--space-8);
}

.trust-pillar {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.trust-pillar-icon {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  background: rgba(107, 33, 168, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-1);
}

.trust-pillar strong {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.trust-pillar span {
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── CTA Section ────────────────────────────────────────────── */
.cta-section {
  background: var(--bg-base);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(107, 33, 168, 0.18) 0%, transparent 70%);
  pointer-events: none;
}

.cta-block {
  max-width: 600px;
  margin-inline: auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-block .section-label { margin-bottom: var(--space-4); }

.cta-block h2 { margin-bottom: var(--space-4); }

.cta-block > p {
  margin-bottom: var(--space-8);
  font-size: 1rem;
}

.waitlist-form--large .input-group {
  flex-direction: column;
  max-width: 100%;
}

.waitlist-form--large .email-input,
.waitlist-form--large .btn {
  width: 100%;
  justify-content: center;
}

.cta-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.text-link {
  font-size: 0.825rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.text-link:hover { color: var(--purple-300); }

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--bg-void);
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-16) var(--space-10);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-8);
}

.footer-brand {
  max-width: 300px;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-faint);
}

.footer-copy strong { color: var(--text-muted); }

.footer-nav {
  display: flex;
  gap: var(--space-12);
}

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

.footer-nav-group strong {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.footer-nav-group a {
  font-size: 0.85rem;
  color: var(--text-faint);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.footer-nav-group a:hover { color: var(--purple-300); }

.footer-legal {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-legal p {
  font-size: 0.75rem;
  color: var(--text-faint);
  line-height: 1.5;
}

.footer-legal a {
  color: var(--text-muted);
  text-decoration: underline;
  text-decoration-color: var(--border-subtle);
  transition: color var(--duration-fast);
}

.footer-legal a:hover { color: var(--purple-300); }

/* ── Reveal Animations ──────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="100"] { transition-delay: 100ms; }
[data-reveal-delay="200"] { transition-delay: 200ms; }
[data-reveal-delay="300"] { transition-delay: 300ms; }
[data-reveal-delay="400"] { transition-delay: 400ms; }
[data-reveal-delay="500"] { transition-delay: 500ms; }
[data-reveal-delay="0"]   { transition-delay: 0ms; }
[data-reveal-delay="75"]  { transition-delay: 75ms; }
[data-reveal-delay="80"]  { transition-delay: 80ms; }
[data-reveal-delay="150"] { transition-delay: 150ms; }
[data-reveal-delay="160"] { transition-delay: 160ms; }
[data-reveal-delay="225"] { transition-delay: 225ms; }
[data-reveal-delay="240"] { transition-delay: 240ms; }
[data-reveal-delay="320"] { transition-delay: 320ms; }

/* ── Responsive ─────────────────────────────────────────────── */
.br-desktop { display: initial; }

@media (max-width: 900px) {
  .problem-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

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

  .personas-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .persona-card--wide {
    grid-column: span 2;
  }

  .trust-pillars {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-8);
  }

  .footer-nav { gap: var(--space-8); }

  .br-desktop { display: none; }
}

@media (max-width: 640px) {
  :root { --container-pad: 1.25rem; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(7, 2, 15, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-5) var(--container-pad) var(--space-8);
    border-bottom: 1px solid var(--border-subtle);
    gap: var(--space-1);
    z-index: 99;
  }

  .nav-links.open { display: flex; }

  .nav-links .nav-link {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 1rem;
  }

  .nav-links .btn {
    margin-top: var(--space-3);
    justify-content: center;
    width: 100%;
  }

  .nav-toggle { display: flex; }

  .nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  .input-group {
    flex-direction: column;
    max-width: 100%;
  }

  .input-group .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-scroll-hint { display: none; }

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

  .persona-card--wide {
    grid-column: span 1;
  }

  .trust-pillars {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    flex-direction: column;
    gap: var(--space-6);
  }
}

/* ── Utilities ──────────────────────────────────────────────── */
.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;
}

/* ── Selection ──────────────────────────────────────────────── */
::selection {
  background: rgba(107, 33, 168, 0.4);
  color: var(--text-primary);
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb {
  background: var(--purple-800);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--purple-700); }

/* ── Focus ──────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--purple-400);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}