/* =========================================================================
   Public Proof — marketing/support site
   Design tokens mirror the app's Public Proof brand (src/ui/styles/brandTheme.ts):
   near-black canvas, violet→cyan 135° gradients, Poppins headings, Inter body,
   Space Mono eyebrow labels. Dark theme only (matches the app's brand surfaces).
   ========================================================================= */

/* ----------------------------- Fonts ----------------------------- */
@font-face {
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/poppins-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/poppins-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('/assets/fonts/poppins-800.woff2') format('woff2');
}
/* Inter is a variable font (100–900) served from a single file. */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/assets/fonts/inter-variable.woff2') format('woff2');
}
@font-face {
  font-family: 'Space Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/spacemono-400.woff2') format('woff2');
}

/* ----------------------------- Tokens ----------------------------- */
:root {
  /* Brand colors (brandTheme.ts) */
  --bg: #08080a;
  --bg-splash: #030304;
  --violet: #7C3AED;
  --cyan: #00D4FF;
  --magenta: #9233F7;
  --blue: #4C6FEA;
  --focus: #00D4FF;

  /* Text ladder — tuned upward from the app values for web WCAG AA on #08080a */
  --text: #FFFFFF;
  --text-body: rgba(255, 255, 255, 0.74);
  --text-muted: rgba(255, 255, 255, 0.60);
  --text-faint: rgba(255, 255, 255, 0.48);
  --eyebrow: #b8a6ff;            /* light violet — AA-safe for small labels */

  /* Surfaces */
  --card-fill: rgba(255, 255, 255, 0.03);
  --card-fill-hover: rgba(255, 255, 255, 0.055);
  --card-border: rgba(255, 255, 255, 0.09);
  --card-border-strong: rgba(255, 255, 255, 0.16);
  --hairline: rgba(255, 255, 255, 0.08);
  --header-bg: rgba(8, 8, 10, 0.72);

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #7C3AED 0%, #00D4FF 100%);
  --grad-primary-90: linear-gradient(90deg, #7C3AED 0%, #00D4FF 100%);
  --grad-public: linear-gradient(135deg, #7C3AED 0%, #9233F7 100%);
  --grad-proof: linear-gradient(135deg, #4C6FEA 0%, #00D4FF 100%);
  --grad-link: linear-gradient(135deg, #9233F7 0%, #00D4FF 100%);

  /* Type */
  --font-head: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  /* Layout */
  --maxw: 1120px;
  --maxw-prose: 760px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --section-y: clamp(3.5rem, 9vw, 6.5rem);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-body);
  background-color: var(--bg);
  /* Signature 16px dot-grid texture (brandTheme dotGrid). */
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1.3px);
  background-size: 16px 16px;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;              /* safety net; does not break position: sticky */
  min-height: 100vh;
}

img, svg, picture { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

/* Accessible focus ring */
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.6rem 1rem;
  background: var(--bg-splash);
  color: #fff;
  border: 1px solid var(--card-border-strong);
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ----------------------------- Typography ----------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--text);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
}
h1 { font-size: clamp(2.1rem, 6.2vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.65rem, 4.4vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2.4vw, 1.4rem); }
h4 { font-size: 1.05rem; font-weight: 600; }

p { color: var(--text-body); }
strong { color: var(--text); font-weight: 600; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--eyebrow);
  display: inline-block;
  margin-bottom: 0.9rem;
}

.lede {
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  color: var(--text-muted);
  line-height: 1.6;
}

/* Gradient text helper */
.grad-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Inline text link */
.link {
  background: var(--grad-link);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
  border-bottom: 1px solid rgba(146, 51, 247, 0.35);
  transition: border-color 0.18s ease;
}
.link:hover { border-color: var(--cyan); }

/* ----------------------------- Wordmark ----------------------------- */
.wordmark {
  font-family: var(--font-head);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  white-space: nowrap;
  line-height: 1;
}
.wm-p {
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.wm-p1 { background-image: var(--grad-public); }
.wm-p2 { background-image: var(--grad-proof); }

/* ----------------------------- Layout ----------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }
.section-tight { padding-block: clamp(2.5rem, 6vw, 4rem); }
.center { text-align: center; }
.measure { max-width: 46ch; }
.mx-auto { margin-inline: auto; }

/* ----------------------------- Header / Nav ----------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
}
.brand img { width: 30px; height: 30px; }
.brand .wordmark { font-size: 1.12rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
}
.nav-links a {
  display: inline-block;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.94rem;
  font-weight: 500;
  transition: color 0.18s ease, background 0.18s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.nav-links a[aria-current="page"] { color: var(--text); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--card-border-strong);
  border-radius: var(--radius-sm);
}
.nav-toggle svg { width: 20px; height: 20px; stroke: var(--text); }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.75rem var(--gutter) 1.25rem;
    background: var(--bg-splash);
    border-bottom: 1px solid var(--hairline);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.5);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .nav-links[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-links a {
    padding: 0.85rem 0.6rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--hairline);
    border-radius: 0;
  }
  .nav-links li:last-child a { border-bottom: none; }
}
@media (prefers-reduced-motion: reduce) {
  .nav-links { transition: none; }
}

/* ----------------------------- Buttons ----------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 50px;
  padding: 0 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  border: 1.5px solid transparent;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(0.985); }

/* Gradient-border primary (matches app GradientBorderButton) */
.btn-primary {
  color: #fff;
  background:
    linear-gradient(var(--bg), var(--bg)) padding-box,
    var(--grad-primary) border-box;
}
.btn-primary:hover {
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.25), 0 12px 30px rgba(124, 58, 237, 0.25);
}

/* Filled gradient (for high-emphasis CTAs) */
.btn-gradient {
  color: #fff;
  background: var(--grad-primary);
  border-color: transparent;
}
.btn-gradient:hover { box-shadow: 0 12px 34px rgba(124, 58, 237, 0.4); }

.btn-secondary {
  color: var(--text);
  background: transparent;
  border-color: var(--card-border-strong);
}
.btn-secondary:hover { background: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.28); }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
  .btn:active { transform: none; }
}

/* ----------------------------- Store badges (coming soon) ----------------------------- */
.store-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 1.1rem;
  border-radius: 12px;
  background: var(--card-fill);
  border: 1px solid var(--card-border);
  cursor: default;
  min-width: 190px;
}
.store-badge svg { width: 26px; height: 26px; fill: var(--text); flex-shrink: 0; }
.store-badge .sb-text { display: flex; flex-direction: column; line-height: 1.15; }
.store-badge .sb-top {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}
.store-badge .sb-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text);
}

/* ----------------------------- Cards ----------------------------- */
.card {
  position: relative;
  background: var(--card-fill);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.5rem;
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
/* Signature top-left gradient accent bar */
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.5rem;
  width: 36px;
  height: 3px;
  background: var(--grad-primary-90);
  border-radius: 0 0 3px 3px;
}
.card.no-bar::before { display: none; }
.card:hover {
  border-color: var(--card-border-strong);
  background: var(--card-fill-hover);
}

/* Icon tile */
.icon-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--grad-primary);
  margin-bottom: 1rem;
}
.icon-tile svg { width: 22px; height: 22px; stroke: #fff; fill: none; }

.card h3 { margin-bottom: 0.45rem; }
.card p { font-size: 0.95rem; color: var(--text-muted); }

/* ----------------------------- Grids ----------------------------- */
.grid { display: grid; gap: 1.1rem; }
.grid-features { grid-template-columns: 1fr; }
@media (min-width: 620px) { .grid-features { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid-features { grid-template-columns: repeat(3, 1fr); } }

.grid-2 { grid-template-columns: 1fr; }
@media (min-width: 760px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }

/* ----------------------------- Hero ----------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3rem, 8vw, 5.5rem) clamp(3rem, 8vw, 5rem);
  isolation: isolate;
}
/* Decorative outlined geometry (brandTheme BrandBackdrop) */
.hero-shapes {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.hero-shapes span { position: absolute; display: block; }
.shape-circle {
  width: min(52vw, 460px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(124, 58, 237, 0.35);
  top: -8%;
  right: -6%;
}
.shape-square {
  width: min(38vw, 320px);
  aspect-ratio: 1;
  border: 1px solid rgba(0, 212, 255, 0.28);
  transform: rotate(45deg);
  bottom: -12%;
  left: -8%;
}
.hero-glow {
  position: absolute;
  z-index: -1;
  width: min(90vw, 720px);
  aspect-ratio: 1;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(124, 58, 237, 0.22) 0%, rgba(0, 212, 255, 0.06) 42%, transparent 68%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1.15fr 0.85fr; }
}
.hero h1 { margin-bottom: 1.1rem; }
.hero .lede { margin-bottom: 1.9rem; max-width: 34ch; }
.hero-cta { display: flex; flex-direction: column; gap: 1rem; }
.hero-note { font-size: 0.85rem; color: var(--text-faint); }

.hero-art {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-art img {
  width: min(74vw, 340px);
  filter: drop-shadow(0 22px 60px rgba(124, 58, 237, 0.35));
}
@media (max-width: 899px) {
  .hero-art { order: -1; }
  .hero-art img { width: min(48vw, 190px); }
}

/* ----------------------------- Positioning band ----------------------------- */
.band {
  background: var(--bg-splash);
  border-block: 1px solid var(--hairline);
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--card-border);
  background: var(--card-fill);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--grad-primary); }

/* ----------------------------- Stats ----------------------------- */
.stat-row { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 620px) { .stat-row { grid-template-columns: repeat(3, 1fr); } }
.stat { text-align: center; }
.stat .num {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}
.stat .label { font-size: 0.9rem; color: var(--text-muted); }

/* ----------------------------- Callout ----------------------------- */
.callout {
  position: relative;
  border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 4vw, 2.4rem);
  background:
    linear-gradient(var(--bg-splash), var(--bg-splash)) padding-box,
    var(--grad-primary) border-box;
  border: 1.5px solid transparent;
}
.callout h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin-bottom: 0.75rem; }

/* ----------------------------- Section heading block ----------------------------- */
.section-head { max-width: 640px; margin-bottom: clamp(2rem, 4vw, 2.75rem); }
.section-head.center { margin-inline: auto; }
.section-head p { margin-top: 0.75rem; }

/* ----------------------------- Support / contact ----------------------------- */
.contact-grid { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .contact-grid { grid-template-columns: repeat(2, 1fr); } }

.contact-card { display: flex; flex-direction: column; gap: 0.35rem; }
.contact-card .icon-tile { margin-bottom: 0.9rem; }
.contact-card .label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--eyebrow);
}
.contact-card .value {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.05rem, 2.6vw, 1.25rem);
  color: var(--text);
  word-break: break-word;
}
.contact-card a.value:hover { color: var(--cyan); }
.contact-card .sub { font-size: 0.9rem; color: var(--text-muted); }

/* Steps / help list */
.help-list { display: grid; gap: 1.1rem; }
.help-item { display: flex; gap: 1rem; align-items: flex-start; }
.help-item .num-badge {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  background: var(--grad-primary);
}
.help-item h3 { font-size: 1.08rem; margin-bottom: 0.2rem; }
.help-item p { font-size: 0.94rem; color: var(--text-muted); }

/* ----------------------------- Legal / prose ----------------------------- */
.legal { max-width: var(--maxw-prose); margin-inline: auto; }
.legal .updated { font-size: 0.85rem; color: var(--text-faint); margin-bottom: 0.5rem; }
.legal > .intro { color: var(--text-body); margin-bottom: 0.5rem; }

.legal-note {
  border: 1px solid var(--card-border);
  background: var(--card-fill);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 1.75rem 0;
}
.legal-note strong { color: var(--text); }

.legal section { margin-top: 2.4rem; }
.legal .sec-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--eyebrow);
  display: block;
  margin-bottom: 0.4rem;
}
.legal h2 {
  font-size: clamp(1.2rem, 2.6vw, 1.5rem);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.legal h3 { font-size: 1.05rem; margin: 1.4rem 0 0.5rem; }
.legal p { margin-bottom: 0.9rem; color: var(--text-body); }
.legal ul { margin: 0 0 1rem 0; padding-left: 1.2rem; }
.legal li { margin-bottom: 0.45rem; color: var(--text-body); }
.legal li::marker { color: var(--cyan); }

.placeholder {
  background: rgba(146, 51, 247, 0.14);
  border-bottom: 1px dashed rgba(184, 166, 255, 0.7);
  color: #d9ccff;
  padding: 0 0.2em;
  border-radius: 3px;
  font-style: normal;
}

.toc {
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1rem;
  background: var(--card-fill);
}
.toc h2 { font-size: 0.72rem; font-family: var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--eyebrow); margin-bottom: 0.6rem; }
.toc ol { margin: 0; padding-left: 1.1rem; columns: 2; column-gap: 1.5rem; }
.toc li { margin-bottom: 0.35rem; font-size: 0.9rem; }
.toc a { color: var(--text-muted); }
.toc a:hover { color: var(--cyan); }
@media (max-width: 560px) { .toc ol { columns: 1; } }

/* ----------------------------- Page hero (inner pages) ----------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(2.75rem, 7vw, 4.5rem) clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--hairline);
  isolation: isolate;
}
.page-hero .hero-glow { top: -55%; opacity: 0.8; }
.page-hero h1 { font-size: clamp(1.9rem, 5vw, 2.9rem); }
.page-hero p { margin-top: 0.9rem; }

/* ----------------------------- Footer ----------------------------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  background: var(--bg-splash);
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
  margin-top: var(--section-y);
}
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}
.footer-brand .brand { margin-bottom: 0.9rem; }
.footer-brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 34ch; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.9rem;
  font-weight: 400;
}
.footer-col ul { list-style: none; display: grid; gap: 0.55rem; }
.footer-col a { color: var(--text-muted); font-size: 0.94rem; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p { font-size: 0.83rem; color: var(--text-faint); }
.footer-bottom .disclaimer { max-width: 60ch; }

/* ----------------------------- Reveal on scroll ----------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ----------------------------- Utilities ----------------------------- */
.stack > * + * { margin-top: 1rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.75rem; }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}