/*
 * Wump landing page — v1 design-system CSS
 * Dark-first, DESIGN.md tokens, pass-1 primitives (hex badge, shimmer skeleton, chip soft-fill).
 * Light mode via prefers-color-scheme: light.
 * No external framework. Vanilla CSS. Static serve only.
 */

/* ─── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body { min-height: 100dvh; overflow-x: hidden; }

/* ─── Design tokens — dark mode (default) ────────────────────────────────── */
:root {
  /* Surfaces */
  --wump-surface-0: #0B0D10;
  --wump-surface-1: #14171C;
  --wump-surface-2: #1C2026;
  /* Borders */
  --wump-border-subtle: #23272E;
  /* Text */
  --wump-text-primary: #E8EAED;
  --wump-text-secondary: #A0A6AD;
  --wump-text-tertiary: #6B7178;
  /* Bitcoin orange */
  --wump-accent-bitcoin: #F7931A;
  --wump-accent-bitcoin-soft: rgba(247, 147, 26, 0.12);
  /* State colours */
  --wump-state-success: #4ADE80;
  --wump-state-success-soft: rgba(74, 222, 128, 0.12);
  --wump-state-success-text: #4ADE80;
  --wump-state-warning: #FBBF24;
  --wump-state-warning-soft: rgba(251, 191, 36, 0.12);
  --wump-state-warning-text: #FBBF24;
  --wump-state-danger: #F87171;
  --wump-state-danger-soft: rgba(248, 113, 113, 0.12);
  --wump-state-danger-text: #F87171;
  /* Radius */
  --radius: 8px;
  --radius-lg: 16px;
}

/* ─── Light-mode mirror ───────────────────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root {
    --wump-surface-0: #FFFFFF;
    --wump-surface-1: #F5F6F7;
    --wump-surface-2: #ECEEF0;
    --wump-border-subtle: #D8DADE;
    --wump-text-primary: #0B0D10;
    --wump-text-secondary: #4A5059;
    --wump-text-tertiary: #8A9099;
    --wump-accent-bitcoin: #F7931A; /* identical in both modes */
    --wump-accent-bitcoin-soft: rgba(247, 147, 26, 0.10);
    --wump-state-success: #16A34A;
    --wump-state-success-soft: rgba(22, 163, 74, 0.10);
    --wump-state-success-text: #16A34A;
    --wump-state-warning: #D97706;
    --wump-state-warning-soft: rgba(217, 119, 6, 0.10);
    --wump-state-warning-text: #D97706;
    --wump-state-danger: #DC2626;
    --wump-state-danger-soft: rgba(220, 38, 38, 0.10);
    --wump-state-danger-text: #DC2626;
  }
}

/* ─── Base ────────────────────────────────────────────────────────────────── */
body {
  background-color: var(--wump-surface-0);
  color: var(--wump-text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Tabular numerals utility */
.font-tabular {
  font-feature-settings: 'tnum' 1, 'cv11' 1;
}

/* Mono — for xpubs, txids, sat figures paired with fiat */
.font-mono {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Courier New', monospace;
  font-size: 0.8125rem; /* 13px */
  letter-spacing: 0.01em;
}

/* ─── Skip link ───────────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--wump-accent-bitcoin);
  color: #fff;
  padding: 0.625rem 1.25rem;
  z-index: 10000;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0 0 var(--radius) 0;
  transition: top 0.15s;
}
.skip-link:focus { top: 0; }

/* ─── Container system ────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 72rem; /* 1152px — max-w-6xl */
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.container--narrow {
  max-width: 56rem; /* 896px — max-w-4xl, hero text */
}
.container--wide {
  max-width: 80rem; /* 1280px — screenshots row */
}

/* ─── Typography helpers ──────────────────────────────────────────────────── */
.text-eyebrow {
  font-size: 0.6875rem; /* 11px — text-2xs */
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wump-text-tertiary);
}

/* ─── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.875rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: inherit;
  line-height: 1;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.1s, transform 0.1s;
  outline: none;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--wump-accent-bitcoin), 0 0 0 4px var(--wump-surface-0);
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background-color: var(--wump-accent-bitcoin);
  color: #0B0D10; /* high-contrast on orange, same in both modes */
}
.btn--primary:hover { opacity: 0.9; }

.btn--ghost {
  background-color: transparent;
  color: var(--wump-text-secondary);
  padding-inline: 0.75rem;
}
.btn--ghost:hover { color: var(--wump-text-primary); }

/* ─── Focus rings (all interactive elements) ─────────────────────────────── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--wump-accent-bitcoin);
  outline-offset: 2px;
}

/* ─── Nav ─────────────────────────────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--wump-surface-0);
  border-bottom: 1px solid var(--wump-border-subtle);
}
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}
.site-nav__wordmark {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--wump-text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-nav__wordmark span { color: var(--wump-accent-bitcoin); }
.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.site-nav__link {
  font-size: 0.875rem;
  color: var(--wump-text-secondary);
  text-decoration: none;
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius);
  transition: color 0.15s;
}
.site-nav__link:hover { color: var(--wump-text-primary); }

/* ─── Section spacing ─────────────────────────────────────────────────────── */
.section {
  padding-block: 5rem; /* py-20 — 80px mobile */
}
.section--hero {
  padding-block: 5rem 4rem;
}
.section--demo {
  padding-block: 4rem 5rem;
  background-color: var(--wump-surface-0);
}
.section--alt {
  background-color: var(--wump-surface-1);
}

@media (min-width: 768px) {
  .section { padding-block: 6rem; }
  .section--hero { padding-block: 6rem 5rem; }
}
@media (min-width: 1024px) {
  .section { padding-block: 8rem; }
  .section--hero { padding-block: 10rem 8rem; }
}

/* ─── Section entrance animation ─────────────────────────────────────────── */
@keyframes wump-enter {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-enter {
  animation: wump-enter 300ms ease-out both;
}

@media (prefers-reduced-motion: reduce) {
  .animate-enter {
    animation: none;
  }
}

/* ─── Block 1: Hero ───────────────────────────────────────────────────────── */
.hero {
  text-align: center;
}
.hero__headline {
  font-family: 'Inter Display', 'Inter', -apple-system, sans-serif;
  font-size: clamp(2rem, 6vw, 3.75rem); /* text-4xl → text-6xl */
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--wump-text-primary);
  max-width: 52rem;
  margin-inline: auto;
}
.hero__subheadline {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--wump-text-secondary);
  max-width: 40rem;
  margin-inline: auto;
  margin-top: 1.25rem;
  line-height: 1.6;
}
.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}
.hero__microcopy {
  margin-top: 1rem;
  font-size: 0.8125rem;
  color: var(--wump-text-tertiary);
}

/* ─── Block 2: Demo widget ────────────────────────────────────────────────── */
.demo-section__label {
  text-align: center;
  margin-bottom: 1.5rem;
}
.demo-section__above {
  text-align: center;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--wump-text-primary);
  margin-bottom: 1.5rem;
}
.demo-widget {
  max-width: 32rem; /* ~512px */
  margin-inline: auto;
  background-color: var(--wump-surface-1);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
}

/* Hex badge in widget upper-right */
.demo-widget__badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
}

/* xpub input area */
.demo-widget__input-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.demo-widget__label {
  font-size: 0.75rem;
  color: var(--wump-text-tertiary);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.demo-widget__xpub {
  background-color: var(--wump-surface-2);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  padding: 0.625rem 0.75rem;
  color: var(--wump-text-secondary);
  word-break: break-all;
  font-size: 0.8125rem;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  line-height: 1.5;
}

.demo-widget__divider {
  height: 1px;
  background-color: var(--wump-border-subtle);
  margin-block: 1.25rem;
}

/* Balance reveal area */
.demo-widget__balance-area {
  margin-bottom: 1rem;
}
.demo-widget__balance-label {
  font-size: 0.75rem;
  color: var(--wump-text-tertiary);
  margin-bottom: 0.375rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.demo-widget__balance-row {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  flex-wrap: wrap;
}
.demo-widget__btc {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--wump-text-primary);
  font-feature-settings: 'tnum' 1;
  letter-spacing: -0.02em;
}
.demo-widget__sats {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8125rem;
  color: var(--wump-accent-bitcoin);
  font-feature-settings: 'tnum' 1;
}

/* Reconciliation chips */
.demo-widget__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ─── Skeleton shimmer (pass-1 § 5.1) ────────────────────────────────────── */
.skeleton {
  border-radius: 4px;
  background: linear-gradient(
    90deg,
    var(--wump-surface-1) 0%,
    var(--wump-surface-2) 50%,
    var(--wump-surface-1) 100%
  );
  background-size: 400px 100%;
  animation: skeleton-shimmer 1.4s linear infinite;
}

@keyframes skeleton-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton {
    animation: none;
    background: var(--wump-surface-1);
  }
}

.skeleton--text { height: 0.875rem; border-radius: 4px; }
.skeleton--btc  { height: 2rem;    border-radius: 4px; width: 10rem; }
.skeleton--sats { height: 0.875rem; border-radius: 4px; width: 7rem; }

/* Demo widget state: loading vs revealed vs done */
.demo-widget[data-state="loading"] .demo-balance-revealed   { display: none; }
.demo-widget[data-state="loading"] .demo-balance-skeleton   { display: block; }
.demo-widget[data-state="revealed"] .demo-balance-skeleton  { display: none; }
.demo-widget[data-state="revealed"] .demo-balance-revealed  { display: block; }
/* In "done" state, keep balance visible and skeleton hidden */
.demo-widget[data-state="done"] .demo-balance-skeleton      { display: none; }
.demo-widget[data-state="done"] .demo-balance-revealed      { display: block; }

/* Badge transition */
.demo-widget[data-state="loading"] .hex-badge { opacity: 0.3; }
.demo-widget[data-state="revealed"] .hex-badge,
.demo-widget[data-state="done"] .hex-badge {
  opacity: 1;
  transition: opacity 0.18s ease;
}

/* Demo captions */
.demo-captions {
  max-width: 32rem;
  margin-inline: auto;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.demo-caption {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--wump-text-secondary);
}
.demo-caption__num {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background-color: var(--wump-surface-2);
  border: 1px solid var(--wump-border-subtle);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--wump-text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.0625rem;
}
.demo-caption__text { line-height: 1.5; }
.demo-caption__text strong { color: var(--wump-text-primary); font-weight: 500; }

.demo-footnote {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  color: var(--wump-text-tertiary);
  font-style: italic;
}

/* Replay button */
.demo-widget__replay {
  display: none;
  margin-top: 1rem;
  width: 100%;
  background-color: transparent;
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  color: var(--wump-text-secondary);
  padding: 0.5rem;
  font-size: 0.8125rem;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.15s, border-color 0.15s;
}
.demo-widget__replay:hover { color: var(--wump-text-primary); border-color: var(--wump-text-secondary); }
.demo-widget__replay:focus-visible {
  outline: 2px solid var(--wump-accent-bitcoin);
  outline-offset: 2px;
}
.demo-widget[data-state="done"] .demo-widget__replay { display: block; }

/* ─── Hex verification badge (pass-1 § 6.8) ──────────────────────────────── */
.hex-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* 32×36px standalone size */
  width: 2rem;
  height: 2.25rem;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transition: background-color 0.18s ease, opacity 0.18s ease;
}

.hex-badge--muted {
  background-color: var(--wump-surface-2);
}
.hex-badge--verified {
  background-color: var(--wump-accent-bitcoin);
}
.hex-badge--warn {
  background-color: var(--wump-state-warning);
}

/* Inner check SVG */
.hex-badge svg {
  width: 1rem;
  height: 1rem;
  color: var(--wump-surface-0);
  stroke-width: 2.5;
}

/* Inline 18×20 size (credibility row) */
.hex-badge--inline {
  width: 1.125rem;
  height: 1.25rem;
}
.hex-badge--inline svg {
  width: 0.625rem;
  height: 0.625rem;
  stroke-width: 3;
}

/* ─── Chip soft-fill (pass-1 § 5.1) ──────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3125rem;
  padding: 0.25rem 0.625rem;
  border-radius: 100px;
  font-size: 0.6875rem; /* text-2xs */
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.chip svg {
  flex-shrink: 0;
  width: 0.75rem;
  height: 0.75rem;
  stroke-width: 2;
}

.chip--success {
  background-color: var(--wump-state-success-soft);
  color: var(--wump-state-success-text);
}
.chip--warning {
  background-color: var(--wump-state-warning-soft);
  color: var(--wump-state-warning-text);
}
.chip--danger {
  background-color: var(--wump-state-danger-soft);
  color: var(--wump-state-danger-text);
}
.chip--bitcoin {
  background-color: var(--wump-accent-bitcoin-soft);
  color: var(--wump-accent-bitcoin);
}

/* ─── Block 3: Credibility row ────────────────────────────────────────────── */
.credibility-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 768px) {
  .credibility-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.cred-cell {
  background-color: var(--wump-surface-1);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem;
  cursor: default;
}

.cred-cell__icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--wump-text-primary);
  stroke-width: 1.5;
  margin-bottom: 0.75rem;
}

.cred-cell__label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--wump-text-primary);
  margin-bottom: 0.375rem;
}

.cred-cell__explainer {
  font-size: 0.8125rem;
  color: var(--wump-text-secondary);
  line-height: 1.5;
}

/* Expand affordance */
.cred-cell__expand-btn {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 0.75rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.75rem;
  color: var(--wump-text-tertiary);
  padding: 0;
  transition: color 0.15s;
}
.cred-cell__expand-btn:hover { color: var(--wump-text-secondary); }
.cred-cell__expand-btn:focus-visible {
  outline: 2px solid var(--wump-accent-bitcoin);
  outline-offset: 2px;
  border-radius: 2px;
}

.cred-cell__expand-icon {
  width: 0.875rem;
  height: 0.875rem;
  stroke-width: 1.5;
  transition: transform 0.2s ease;
}
.cred-cell__expand-btn[aria-expanded="true"] .cred-cell__expand-icon {
  transform: rotate(180deg);
}

.cred-cell__detail {
  display: none;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--wump-border-subtle);
  font-size: 0.8125rem;
  color: var(--wump-text-secondary);
  line-height: 1.6;
}
.cred-cell__detail[data-open="true"] { display: block; }

/* ─── Block 4: Reconciliation explainer ──────────────────────────────────── */
.reconcile-heading {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--wump-text-primary);
  margin-bottom: 0.75rem;
}
.reconcile-body {
  font-size: 1rem;
  color: var(--wump-text-secondary);
  max-width: 38rem;
  line-height: 1.65;
  margin-bottom: 2rem;
}
.reconcile-body strong { color: var(--wump-text-primary); font-weight: 500; }

.reconcile-states {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 768px) {
  .reconcile-states {
    flex-direction: row;
    gap: 1.25rem;
  }
}

.reconcile-state {
  flex: 1;
  background-color: var(--wump-surface-1);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.reconcile-state__label {
  font-size: 0.875rem;
  color: var(--wump-text-secondary);
  line-height: 1.5;
}
.reconcile-state__label strong { display: block; color: var(--wump-text-primary); font-weight: 500; margin-bottom: 0.25rem; }

.reconcile-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--wump-text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}
.reconcile-link:hover { color: var(--wump-text-primary); }

/* ─── Block 5: Pricing ────────────────────────────────────────────────────── */
.pricing-heading {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--wump-text-primary);
  margin-bottom: 0.5rem;
}
.pricing-subheading {
  font-size: 1rem;
  color: var(--wump-text-secondary);
  margin-bottom: 2.5rem;
  max-width: 38rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  max-width: 52rem;
}
@media (min-width: 640px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}

.pricing-card {
  background-color: var(--wump-surface-1);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}
@media (min-width: 768px) {
  .pricing-card { padding: 2.5rem; }
}

.pricing-card__tier {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--wump-text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}
.pricing-card__tagline {
  font-size: 0.8125rem;
  color: var(--wump-text-secondary);
  margin-bottom: 1.5rem;
}

.pricing-card__capabilities {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 2rem;
  flex: 1;
}
.pricing-card__cap {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--wump-text-primary);
  line-height: 1.5;
}
.pricing-card__cap-icon {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  margin-top: 0.125rem;
  stroke-width: 2;
}
.pricing-card__cap-icon--check { color: var(--wump-state-success); }
.pricing-card__cap-icon--minus { color: var(--wump-text-tertiary); }

.pricing-card__cta { width: 100%; }

.pricing-card__trial-note {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--wump-text-secondary);
  line-height: 1.5;
}
.pricing-card__trial-note strong { font-weight: 600; }

/* ─── Block 6: Safety one-liner ──────────────────────────────────────────── */
.safety-card {
  max-width: 40rem;
  margin-inline: auto;
  background-color: var(--wump-surface-1);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}
.safety-card__icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: var(--wump-text-secondary);
  stroke-width: 1.5;
  margin-top: 0.125rem;
}
.safety-card__text {
  font-size: 0.9375rem;
  color: var(--wump-text-primary);
  line-height: 1.6;
  flex: 1;
}
.safety-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  color: var(--wump-text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}
.safety-card__link:hover { color: var(--wump-text-primary); }

/* ─── Block 7: Screenshots row ────────────────────────────────────────────── */
.screenshots-heading {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--wump-text-primary);
  margin-bottom: 0.5rem;
}
.screenshots-caption {
  font-size: 0.9375rem;
  color: var(--wump-text-secondary);
  margin-bottom: 2.5rem;
  max-width: 36rem;
}

/* Phone frames row */
.screenshots-row {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 1rem;
  scrollbar-width: none; /* Firefox */
}
.screenshots-row::-webkit-scrollbar { display: none; }

@media (min-width: 768px) {
  .screenshots-row {
    overflow-x: visible;
    justify-content: center;
  }
}

.phone-frame {
  flex-shrink: 0;
  width: 11rem; /* 176px */
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .phone-frame { width: 13.5rem; } /* 216px */
  /* Centre phone slightly forward */
  .phone-frame:nth-child(2) { transform: translateY(-0.75rem); }
}

.phone-frame__device {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  background-color: var(--wump-surface-1);
  border: 1px solid var(--wump-border-subtle);
  border-radius: 1.25rem;
  overflow: hidden;
  position: relative;
}

/* Notch simulation */
.phone-frame__notch {
  position: absolute;
  top: 0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 4rem;
  height: 0.375rem;
  background-color: var(--wump-border-subtle);
  border-radius: 100px;
  z-index: 1;
}

.phone-frame__screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

/* Placeholder screen (until real screenshots are available) */
.phone-frame__placeholder {
  width: 100%;
  height: 100%;
  background-color: var(--wump-surface-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
}
.phone-frame__placeholder-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--wump-text-tertiary);
  stroke-width: 1.5;
}
.phone-frame__placeholder-text {
  font-size: 0.6875rem;
  color: var(--wump-text-tertiary);
  text-align: center;
  line-height: 1.4;
}
.phone-frame__demo-note {
  font-size: 0.6875rem;
  color: var(--wump-text-tertiary);
  font-style: italic;
  text-align: center;
}

.phone-frame__label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--wump-text-tertiary);
}

/* ─── Block 8: Footer ─────────────────────────────────────────────────────── */
.site-footer {
  background-color: var(--wump-surface-1);
  border-top: 1px solid var(--wump-border-subtle);
  padding-block: 3rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1fr repeat(3, auto);
    gap: 3rem;
    align-items: start;
  }
}

.site-footer__brand .wordmark {
  font-size: 1rem;
  font-weight: 700;
  color: var(--wump-text-primary);
  letter-spacing: -0.01em;
}
.site-footer__brand .wordmark span { color: var(--wump-accent-bitcoin); }
.site-footer__tagline {
  font-size: 0.8125rem;
  color: var(--wump-text-tertiary);
  margin-top: 0.375rem;
  font-style: italic;
}
.site-footer__micro {
  margin-top: 0.625rem;
  font-size: 0.75rem;
  color: var(--wump-text-tertiary);
}

.site-footer__col-heading {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--wump-text-tertiary);
  margin-bottom: 0.75rem;
}

.site-footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.site-footer__links a {
  font-size: 0.875rem;
  color: var(--wump-text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}
.site-footer__links a:hover { color: var(--wump-text-primary); }

.site-footer__social {
  display: flex;
  gap: 0.875rem;
  margin-top: 0.25rem;
}
.site-footer__social a {
  color: var(--wump-text-tertiary);
  transition: color 0.15s;
  display: flex;
  align-items: center;
}
.site-footer__social a:hover { color: var(--wump-text-primary); }
.site-footer__social svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 1.5;
}

.site-footer__bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--wump-border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}
.site-footer__copyright {
  font-size: 0.8125rem;
  color: var(--wump-text-tertiary);
}

/* ─── Utility helpers ─────────────────────────────────────────────────────── */
.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;
}

.text-center { text-align: center; }
.section-label {
  margin-bottom: 2.5rem;
}

/* ─── Demo animation keyframes ────────────────────────────────────────────── */
@keyframes badge-reveal {
  from { opacity: 0.3; }
  to   { opacity: 1; }
}
@keyframes balance-fadein {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.demo-widget[data-state="revealed"] .demo-balance-revealed {
  animation: balance-fadein 0.2s ease both;
}
.demo-widget[data-state="revealed"] .hex-badge {
  animation: badge-reveal 0.18s ease both;
}

@media (prefers-reduced-motion: reduce) {
  .demo-widget[data-state="revealed"] .demo-balance-revealed,
  .demo-widget[data-state="revealed"] .hex-badge {
    animation: none;
  }
  /* In reduced motion, render end-state immediately — handled in JS */
}

/* ─── Live-demo input form ────────────────────────────────────────────────── */

.demo-widget__input-group {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}

.demo-widget__xpub-input {
  flex: 1;
  background-color: var(--wump-surface-2);
  border: 1px solid var(--wump-border-subtle);
  border-radius: var(--radius);
  padding: 0.625rem 0.75rem;
  color: var(--wump-text-primary);
  font-size: 0.8125rem;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  line-height: 1.5;
  transition: border-color 0.15s;
  min-width: 0; /* prevent overflow in flex */
}
.demo-widget__xpub-input::placeholder {
  color: var(--wump-text-tertiary);
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
}
.demo-widget__xpub-input:focus {
  outline: none;
  border-color: var(--wump-accent-bitcoin);
}
.demo-widget__xpub-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.demo-widget__submit {
  flex-shrink: 0;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}
.demo-widget__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.demo-widget__xpub-display {
  margin-top: 0.5rem;
}

/* ─── Error state ─────────────────────────────────────────────────────────── */

.demo-balance-error {
  display: none;
  padding: 0.75rem 0;
}
.demo-widget[data-state="error"] .demo-balance-error   { display: block; }
.demo-widget[data-state="error"] .demo-balance-skeleton { display: none; }
.demo-widget[data-state="error"] .demo-balance-revealed { display: none; }
.demo-widget[data-state="error"] .demo-widget__replay   { display: none; }

.demo-error-msg {
  font-size: 0.875rem;
  color: var(--wump-state-danger, #EF4444);
  margin: 0 0 0.75rem;
  line-height: 1.5;
}

.demo-widget__replay--error {
  display: block;
}