/* ============================================
   front-page.css — Marketing / landing page
   Loaded only on the static front page (is_front_page()).
   Uses the same design tokens as the app (variables.css + base.css)
   so light/dark theme and typography stay consistent everywhere.
   ============================================ */

.pk-landing {
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 50% -10%, var(--accent-subtle), transparent 60%),
    var(--bg-primary);
  overflow-x: hidden;
}

.pk-container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ── Top bar ─────────────────────────────────── */
.pk-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
}

.pk-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  font-size: var(--text-xl);
  color: var(--text-primary);
  text-decoration: none;
}

.pk-nav__brand .pk-logo {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
  color: var(--text-on-accent);
  font-size: var(--text-md);
  box-shadow: 0 6px 16px var(--accent-glow);
  flex-shrink: 0;
}

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

.pk-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}
.pk-icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.pk-icon-btn:active { transform: scale(0.94); }

/* ── Nav logo image ──────────────────────────── */
.pk-nav__brand .pk-logo {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
  overflow: hidden;
}
.pk-nav__brand .pk-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ── Hero ────────────────────────────────────── */
.pk-hero {
  padding: clamp(var(--space-xl), 8vw, 88px) 0 clamp(var(--space-xl), 6vw, 64px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(var(--space-xl), 5vw, 64px);
  text-align: left;
}

.pk-hero__text { text-align: left; }

.pk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--accent-subtle);
  color: var(--accent-text);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-lg);
}

.pk-hero h1 {
  font-size: clamp(2rem, 5.5vw, var(--text-4xl));
  max-width: 20ch;
  margin: 0 0 var(--space-md);
}

.pk-hero h1 .pk-accent {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.pk-hero p.pk-lead {
  max-width: 56ch;
  margin: 0 0 var(--space-xl);
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.pk-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.pk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.pk-btn:active { transform: translateY(1px) scale(0.99); }

.pk-btn--primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
  color: var(--text-on-accent);
  box-shadow: 0 10px 24px var(--accent-glow);
}
.pk-btn--primary:hover {
  box-shadow: 0 14px 30px var(--accent-glow);
  transform: translateY(-1px);
  color: var(--text-on-accent);
  text-decoration: none;
}

.pk-btn--ghost {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-default, rgba(0,0,0,0.1));
}
.pk-btn--ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  text-decoration: none;
}

.pk-hero-note {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* ── Hero product mockup ─────────────────────── */
.pk-hero__visual { display: flex; justify-content: center; }

.pk-mock {
  width: 100%;
  max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg, 0 24px 60px rgba(15, 23, 42, 0.16));
  padding: var(--space-md);
  transform: rotate(-1.2deg);
}

.pk-mock__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-default, rgba(0,0,0,0.08));
}
.pk-mock__dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--border-default, rgba(0,0,0,0.15));
}
.pk-mock__badge {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--success, #16a34a);
  background: var(--success-subtle, rgba(22,163,74,0.12));
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.pk-mock__row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xs);
  border-radius: var(--radius-md);
}
.pk-mock__row + .pk-mock__row { margin-top: 4px; }
.pk-mock__row--fade { opacity: 0.5; }

.pk-mock__icon {
  width: 34px; height: 34px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.pk-mock__meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.pk-mock__title { font-size: var(--text-sm); font-weight: var(--font-semibold); color: var(--text-primary); }
.pk-mock__dots { font-size: var(--text-md); letter-spacing: 2px; color: var(--text-muted); }

.pk-mock__action { margin-left: auto; color: var(--text-muted); font-size: var(--text-sm); }
.pk-mock__totp {
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--accent-text);
  background: var(--accent-subtle);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.pk-mock__footer {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-default, rgba(0,0,0,0.08));
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.pk-mock__footer i { color: var(--accent-text); }

/* ── Trust strip ─────────────────────────────── */
.pk-trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-default, rgba(0,0,0,0.08));
  border-bottom: 1px solid var(--border-default, rgba(0,0,0,0.08));
}

.pk-trust__item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
}
.pk-trust__item i { color: var(--accent-text); }

/* ── Feature grid ─────────────────────────────── */
.pk-section {
  padding: clamp(var(--space-xl), 6vw, 64px) 0;
}

.pk-section-head {
  text-align: center;
  max-width: 60ch;
  margin: 0 auto var(--space-2xl);
}
.pk-section-head h2 { margin-bottom: var(--space-sm); }
.pk-section-head p { margin: 0; }

.pk-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.pk-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.pk-card:hover { transform: translateY(-3px); box-shadow: 0 16px 32px rgba(0,0,0,0.08); }

.pk-card__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  color: var(--accent-text);
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
}

.pk-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-xs); }
.pk-card p { font-size: var(--text-sm); margin: 0; }

/* ── Steps ───────────────────────────────────── */
.pk-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  counter-reset: pk-step;
}

.pk-step {
  position: relative;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
}

.pk-step__num {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  color: var(--text-on-accent);
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
}

.pk-step h3 { font-size: var(--text-md); margin-bottom: var(--space-xs); }
.pk-step p { font-size: var(--text-sm); margin: 0; }

/* ── Comparison table ─────────────────────────── */
.pk-compare {
  display: grid;
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
}

.pk-compare-hint {
  display: none;
  text-align: center;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

.pk-compare__row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
}
.pk-compare__row:not(:last-child) { border-bottom: 1px solid var(--border-default, rgba(0,0,0,0.08)); }

.pk-compare__row > span {
  padding: var(--space-md);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.pk-compare__row > span[role="rowheader"] {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}
.pk-compare__row--head > span {
  font-weight: var(--font-bold);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.pk-compare__col--active {
  background: var(--accent-subtle);
  color: var(--accent-text) !important;
  font-weight: var(--font-semibold);
}
.pk-compare__row--head .pk-compare__col--active { color: var(--accent-text) !important; }
.pk-compare i.fa-circle-check { color: var(--success, #16a34a); }

/* ── Security deep-dive ───────────────────────── */
.pk-security {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  align-items: center;
  gap: var(--space-2xl);
}

.pk-security__visual {
  display: flex;
  justify-content: center;
  position: relative;
}
.pk-security__visual::before {
  content: '';
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle, var(--accent-subtle), transparent 70%);
  z-index: 0;
}
.pk-security__visual img {
  position: relative;
  z-index: 1;
  width: 180px;
  height: 180px;
  object-fit: contain;
  border-radius: var(--radius-xl);
  filter: drop-shadow(0 16px 32px var(--accent-glow));
}

.pk-security__content h2 { margin-bottom: var(--space-sm); }
.pk-security__content > p { color: var(--text-secondary); margin-bottom: var(--space-lg); }

.pk-checklist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-md); }
.pk-checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.55;
}
.pk-checklist i { color: var(--success, #16a34a); margin-top: 3px; flex-shrink: 0; }

/* ── FAQ ───────────────────────────────────────── */
.pk-faq {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pk-faq__item {
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
}

.pk-faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  cursor: pointer;
  list-style: none;
  font-weight: var(--font-semibold);
  font-size: var(--text-md);
  color: var(--text-primary);
}
.pk-faq__item summary::-webkit-details-marker { display: none; }
.pk-faq__item summary i { color: var(--text-muted); transition: transform var(--transition-fast); flex-shrink: 0; }
.pk-faq__item[open] summary i { transform: rotate(180deg); }

.pk-faq__item p {
  margin: var(--space-sm) 0 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Footer ──────────────────────────────────── */
.pk-footer__brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
}
.pk-footer__brand img { border-radius: 6px; }

/* ── Final CTA ───────────────────────────────── */
.pk-cta {
  text-align: center;
  padding: clamp(var(--space-2xl), 8vw, 80px) var(--space-lg);
  margin: var(--space-2xl) 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
  color: var(--text-on-accent);
}
.pk-cta h2 { color: var(--text-on-accent); margin-bottom: var(--space-sm); }
.pk-cta p { color: rgba(255,255,255,0.85); max-width: 50ch; margin: 0 auto var(--space-lg); }
.pk-cta .pk-btn--primary { background: #fff; color: var(--accent-active); box-shadow: 0 10px 24px rgba(0,0,0,0.2); }
.pk-cta .pk-btn--primary:hover { background: #fff; color: var(--accent-active); text-decoration: none; }

/* ── Footer ──────────────────────────────────── */
.pk-footer {
  text-align: center;
  padding: var(--space-xl) 0 var(--space-2xl);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ── Entrance animation (respects reduced motion) ── */
.pk-animate {
  animation: pk-fade-up 0.6s cubic-bezier(0.3, 0, 0.2, 1) both;
}
.pk-animate--delay-1 { animation-delay: 0.08s; }
.pk-animate--delay-2 { animation-delay: 0.16s; }

@keyframes pk-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .pk-animate { animation: none; }
  .pk-card, .pk-btn { transition: none; }
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 900px) {
  .pk-features,
  .pk-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .pk-hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .pk-hero__text { text-align: center; }
  .pk-hero-actions { justify-content: center; }
  .pk-hero__visual { order: -1; }
  .pk-mock { transform: none; }

  .pk-security {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .pk-security__content > p { margin-left: auto; margin-right: auto; }
  .pk-checklist { text-align: left; }

  .pk-compare__row { grid-template-columns: 1.2fr repeat(3, 1fr); }
  .pk-compare__row > span { padding: var(--space-sm); font-size: var(--text-xs); }
}

@media (max-width: 640px) {
  .pk-container { padding: 0 var(--space-md); }

  .pk-nav__brand span.pk-brand-text { font-size: var(--text-lg); }

  .pk-hero { padding-top: var(--space-2xl); padding-bottom: var(--space-xl); }
  .pk-hero p.pk-lead { font-size: var(--text-md); }

  .pk-hero-actions { flex-direction: column; align-items: stretch; }
  .pk-hero-actions .pk-btn { width: 100%; }

  .pk-trust { gap: var(--space-md); }
  .pk-trust__item { font-size: var(--text-xs); }

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

  .pk-stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-md) var(--space-lg); }

  .pk-compare-wrap { position: relative; }
  .pk-compare-wrap::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 28px;
    background: linear-gradient(to right, transparent, var(--bg-primary));
    pointer-events: none;
  }
  .pk-compare-hint { display: block; }
  .pk-compare { overflow-x: auto; }
  .pk-compare__row { grid-template-columns: 110px repeat(3, minmax(120px, 1fr)); width: max-content; min-width: 100%; }

  .pk-faq__item summary { font-size: var(--text-base); }

  .pk-cta { padding: var(--space-xl) var(--space-md); }
}

@media (max-width: 380px) {
  .pk-nav__brand .pk-brand-text { display: none; }
}

/* ============================================
   Additions — nav links, kicker, why-it-matters,
   4-col features, 4-step flow, zero-knowledge
   panel, crypto badges, richer mock & footer.
   ============================================ */

/* ── Nav links ───────────────────────────────── */
.pk-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.pk-nav__links a {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.pk-nav__links a:hover { color: var(--text-primary); }

.pk-btn--sm { padding: 10px 18px; font-size: var(--text-sm); }

/* ── Section kicker (small label above H2) ───── */
.pk-kicker {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: var(--space-sm);
}

/* ── Hero mock v2 (title bar + rows w/ subtitles) ── */
.pk-mock__title-bar {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pk-mock__sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.pk-mock__row .pk-mock__dots { margin-left: auto; }
.pk-mock__footer--ok { color: var(--success, #16a34a); }
.pk-mock__footer--ok i { color: var(--success, #16a34a); }

/* ── Why it matters ──────────────────────────── */
.pk-why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.pk-why__card {
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.pk-why__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--danger-subtle);
  color: var(--danger);
  font-size: var(--text-md);
  margin-bottom: var(--space-md);
}
.pk-why__card h3 { font-size: var(--text-md); margin-bottom: var(--space-xs); }
.pk-why__card p { font-size: var(--text-sm); margin: 0; color: var(--text-secondary); }

/* ── 4-column feature grid + coming-soon badge ── */
.pk-features--4 {
  grid-template-columns: repeat(4, 1fr);
}
.pk-card h3 {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.pk-badge-soon {
  display: inline-block;
  font-size: 10px;
  font-weight: var(--font-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--warning);
  background: var(--warning-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ── 4-step flow (icon badge instead of plain number) ── */
.pk-steps--4 { grid-template-columns: repeat(4, 1fr); }
.pk-step__icon {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  color: var(--accent-text);
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
}
.pk-step__num {
  position: absolute;
  top: -8px;
  right: -8px;
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  color: var(--text-on-accent);
  font-style: normal;
  font-weight: var(--font-bold);
  font-size: 11px;
}

/* ── Zero-knowledge two-column panel ─────────── */
.pk-security {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: start;
}
.pk-security__content > p { color: var(--text-secondary); margin: 0 0 var(--space-md); }

.pk-warning-box {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--warning-subtle);
  border: 1px solid rgba(var(--warning-rgb), 0.35);
  color: var(--text-primary);
  font-size: var(--text-sm);
}
.pk-warning-box i { color: var(--warning); margin-top: 2px; flex-shrink: 0; }

.pk-zk {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.pk-zk__box {
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
}
.pk-zk__box h4 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-md);
  margin: 0 0 var(--space-md);
}
.pk-zk__box ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-sm); }
.pk-zk__box li { display: flex; align-items: center; gap: var(--space-sm); font-size: var(--text-sm); color: var(--text-secondary); }

.pk-zk__box--stays {
  background: var(--success-subtle);
  border-color: rgba(var(--success-rgb), 0.3);
}
.pk-zk__box--stays h4 { color: var(--success); }
.pk-zk__box--stays i.fa-check { color: var(--success); }

.pk-zk__box--server {
  background: var(--bg-secondary);
}
.pk-zk__box--server h4 { color: var(--text-primary); }
.pk-zk__x { color: var(--danger); }
.pk-zk__dot { font-size: 6px; color: var(--text-muted); }
.pk-zk__lock { color: var(--accent-text); }

/* ── Cryptography badge grid ─────────────────── */
.pk-crypto {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
.pk-crypto__item {
  text-align: center;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
}
.pk-crypto__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  color: var(--accent-text);
  font-size: var(--text-lg);
}
.pk-crypto__item h3 {
  font-family: var(--font-mono);
  font-size: var(--text-md);
  margin-bottom: var(--space-xs);
}
.pk-crypto__item p { font-size: var(--text-sm); margin: 0; color: var(--text-secondary); }

/* ── Footer v2 ────────────────────────────────── */
.pk-footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-default, rgba(0,0,0,0.08));
  text-align: left;
}
.pk-footer__links {
  display: flex;
  gap: var(--space-lg);
}
.pk-footer__links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
}
.pk-footer__links a:hover { color: var(--text-primary); }
.pk-footer__copy { margin-top: 4px; opacity: 0.8; }

/* ── Responsive additions ─────────────────────── */
@media (max-width: 900px) {
  .pk-why__grid,
  .pk-crypto { grid-template-columns: repeat(2, 1fr); }
  .pk-features--4,
  .pk-steps--4 { grid-template-columns: repeat(2, 1fr); }
  .pk-nav__links { display: none; }
  .pk-security { grid-template-columns: 1fr; }
  .pk-security__content { text-align: left; }
}

@media (max-width: 640px) {
  .pk-why__grid,
  .pk-crypto,
  .pk-features--4,
  .pk-steps--4 { grid-template-columns: 1fr; }
  .pk-footer__top { flex-direction: column; text-align: center; }
  .pk-footer__links { flex-wrap: wrap; justify-content: center; }
}

/* ============================================
   Advanced polish — sticky glass nav, mobile
   menu, hero glow, scroll-reveal, animated
   stat counters, richer card interactions.
   ============================================ */

/* ── Sticky glass nav ─────────────────────────── */
.pk-nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  border-bottom: 1px solid transparent;
}
.pk-nav-wrap.pk-nav-wrap--scrolled {
  background: color-mix(in srgb, var(--bg-primary) 82%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom-color: var(--border-default, rgba(0,0,0,0.08));
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.pk-nav-wrap .pk-nav { padding: var(--space-md) 0; transition: padding var(--transition-normal); }
.pk-nav-wrap--scrolled .pk-nav { padding: 12px 0; }

/* ── Mobile menu ──────────────────────────────── */
.pk-nav__burger { display: none; }
.pk-nav-mobile {
  display: none;
  flex-direction: column;
  gap: var(--space-md);
  padding: 0 0 var(--space-lg);
}
.pk-nav-mobile a {
  font-size: var(--text-md);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-xs) 0;
}
.pk-nav-mobile__actions { display: flex; gap: var(--space-sm); margin-top: var(--space-sm); }
.pk-nav-mobile__actions .pk-btn { flex: 1; }
.pk-nav-mobile.pk-nav-mobile--open { display: flex; }

@media (max-width: 900px) {
  .pk-nav__cta-desktop { display: none; }
  .pk-nav__burger { display: inline-flex; }
}

/* ── Hero ambient glow (subtle) ───────────────── */
.pk-hero { position: relative; }
.pk-hero__glow {
  position: absolute;
  inset: -10% -5% auto -5%;
  height: 420px;
  z-index: -1;
  background: radial-gradient(480px 260px at 20% 15%, var(--accent-subtle), transparent 70%);
  pointer-events: none;
}

/* ── Scroll-reveal (subtle) ───────────────────── */
.pk-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.pk-reveal.pk-reveal--in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .pk-reveal { opacity: 1; transform: none; transition: none; }
}

/* ── Animated stat counters (restyled) ───────── */
.pk-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin: 0 0 var(--space-2xl);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-default, rgba(0,0,0,0.08));
}
.pk-stat {
  display: grid;
  grid-template-columns: max-content max-content;
  grid-template-areas: "num suffix" "label label";
  justify-content: center;
  align-items: baseline;
  gap: 4px;
}
.pk-stat__num,
.pk-stat__suffix {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  font-weight: var(--font-bold);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.pk-stat__num { display: inline-block; grid-area: num; }
.pk-stat__suffix { grid-area: suffix; }
.pk-stat__label { grid-area: label; font-size: var(--text-sm); color: var(--text-secondary); margin-top: 2px; }

/* ── Card interactions (clean, minimal) ──────── */
.pk-card, .pk-why__card, .pk-crypto__item, .pk-step, .pk-zk__box {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}
.pk-card:hover, .pk-why__card:hover, .pk-crypto__item:hover {
  transform: translateY(-2px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow);
}

/* ── Responsive: stats + mobile menu ─────────── */
@media (max-width: 640px) {
  .pk-stats { grid-template-columns: repeat(2, 1fr); }
}