/* ============================================================
   RefStamp — Shared Stylesheet
   Design tokens from brand/design-tokens.json
   No build step. Loaded by every page.
   ============================================================ */

:root {
  /* ---- Light palette ---- */
  --ink: #16233A;          /* Primary Ink Navy */
  --seal: #2F5D50;         /* Secondary Seal Green */
  --signet: #B0331F;       /* Accent Signet Red (the "stamp") */
  --parchment: #F4F1EA;    /* Tertiary Parchment */
  --paper: #FCFBF8;        /* Background Paper White */
  --text: #1B2430;         /* Text Graphite */
  --muted: #4A5462;        /* Muted */

  /* ---- Neutral ramp ---- */
  --n-900: #14181F;
  --n-700: #3A424E;
  --n-500: #6B7280;
  --n-300: #D7D3CA;
  --n-100: #EFEDE6;

  /* ---- Dark palette (sections) ---- */
  --d-bg: #0E141F;         /* Midnight Ink */
  --d-surface: #182231;    /* Slate Panel */
  --d-primary: #7FA8D9;    /* Sky Signet */
  --d-accent: #E0684F;     /* Ember Red */
  --d-secondary: #6FBAA6;  /* Mint Seal */
  --d-text: #E9ECF1;       /* Fog */
  --d-muted: #9AA6B6;      /* Steel */

  /* ---- Radius ---- */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* ---- Spacing rhythm (generous) ---- */
  --space: 20px;
  --maxw: 1160px;

  /* ---- Shadows (subtle -> elevated) ---- */
  --shadow-soft: 0 1px 2px rgba(22,35,58,0.04), 0 8px 24px rgba(22,35,58,0.06);
  --shadow-lift: 0 2px 6px rgba(22,35,58,0.05), 0 18px 48px rgba(22,35,58,0.10);

  /* ---- Fonts ---- */
  --font-display: 'Sora', system-ui, -apple-system, sans-serif;
  --font-heading: 'Oswald', "Arial Narrow", sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, monospace;

  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  background: var(--paper);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0;
  line-height: 1.1;
  text-wrap: balance;
}

p { margin: 0; }

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

img, svg { max-width: 100%; }

code, .mono {
  font-family: var(--font-mono);
  font-weight: 500;
}

.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;
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -56px;
  z-index: 200;
  background: var(--ink);
  color: var(--paper);
  padding: 11px 18px;
  border-radius: var(--r-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  transition: top .2s ease;
}
.skip-link:focus-visible { top: 12px; }

/* ---- Offset anchored headings so sticky nav doesn't cover them ---- */
:where(h1, h2, h3, h4)[id],
section[id],
main[id] { scroll-margin-top: 90px; }

/* ---- Layout wrapper ---- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---- Eyebrow (Oswald, sparingly) ---- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.eyebrow.accent { color: var(--signet); }

/* ---- Section shells ---- */
section { padding: 92px 0; }

.section-head { max-width: 40em; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  margin: 6px 0 16px;
}
.section-head p { color: var(--muted); font-size: 1.05rem; max-width: 66ch; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  padding: 13px 24px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--signet);
  color: #fff;
  box-shadow: 0 1px 2px rgba(176,51,31,0.25);
}
.btn-primary:hover { background: #9b2c1a; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--n-300);
}
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-1px); }
.btn-link {
  background: transparent;
  color: var(--ink);
  border-color: transparent;
  padding: 13px 14px;
}
.btn-link:hover { color: var(--signet); transform: translateY(-1px); }
.btn-light {
  background: var(--d-text);
  color: var(--ink);
}
.btn-light:hover { transform: translateY(-1px); }
.btn-outline-light {
  background: transparent;
  color: var(--d-text);
  border-color: var(--d-muted);
}
.btn-outline-light:hover { border-color: var(--d-text); transform: translateY(-1px); }

:focus-visible {
  outline: 2px solid var(--signet);
  outline-offset: 3px;
  border-radius: 4px;
}
.dark-mode :focus-visible,
.dark :focus-visible { outline-color: var(--d-accent); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(252,251,248,0.82);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--n-300);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand img { display: block; height: 32px; width: auto; }
.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 0.92rem;
  color: var(--muted);
  transition: color .15s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding: 92px 0 80px; position: relative; overflow: hidden; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.6rem, 5.4vw, 4.1rem);
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 32em;
  margin-bottom: 34px;
}
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 30px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.86rem;
  color: var(--muted);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }

/* ---- Word task-pane mock ---- */
.mock {
  position: relative;
  border-radius: var(--r-md);
  padding: 18px;
  background: linear-gradient(155deg, #ffffff 0%, #f4f3ef 100%);
  border: 1px solid var(--n-300);
  box-shadow: var(--shadow-lift);
  overflow: hidden;
}
.mock-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--n-300);
  margin-bottom: 16px;
}
.mock-bar .pip { width: 9px; height: 9px; border-radius: 50%; background: var(--n-300); }
.mock-bar .title {
  margin-left: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--ink);
}
.mock-doc {
  background: #fff;
  border: 1px solid var(--n-300);
  border-radius: var(--r-sm);
  min-height: 190px;
  padding: 18px 18px 14px;
  margin-bottom: 14px;
  position: relative;
}
.mock-doc .line {
  height: 9px;
  border-radius: 4px;
  background: var(--n-100);
  margin-bottom: 11px;
}
.mock-doc .line.short { width: 58%; }
.mock-doc .line.mid { width: 82%; }
.mock-stamp {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
  border: 1px dashed var(--signet);
  padding: 9px 14px;
  border-radius: 6px;
  background: rgba(176,51,31,0.04);
}
.mock-stamp .tick { color: var(--signet); font-size: 0.95rem; }
.mock-cta { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.mock-cta .btn { flex: 1; padding: 11px 16px; font-size: 0.88rem; }
.mock-cta .ghost-mini {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
  padding: 9px 10px;
  border: 1px solid var(--n-300);
  border-radius: 6px;
}
.mock-scan {
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signet), transparent);
  opacity: 0;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.feature {
  background: #fff;
  border: 1px solid var(--n-300);
  border-radius: var(--r-md);
  padding: 30px 28px;
  box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: var(--n-300); }
.feature .ico {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 10px;
  border: 1px solid var(--n-300);
  margin-bottom: 20px;
  color: var(--ink);
  background: var(--parchment);
}
.feature h3 { font-size: 1.28rem; margin-bottom: 10px; }
.feature p { color: var(--muted); font-size: 0.98rem; }
.feature .meta {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ============================================================
   STEPS (how it works)
   ============================================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step {
  background: #fff;
  border: 1px solid var(--n-300);
  border-radius: var(--r-md);
  padding: 30px 26px;
  position: relative;
}
.step .num {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--signet);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.step h3 { font-size: 1.22rem; margin-bottom: 9px; }
.step p { color: var(--muted); font-size: 0.97rem; }

/* ============================================================
   SOCIAL PROOF
   ============================================================ */
.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.quote {
  background: #fff;
  border: 1px solid var(--n-300);
  border-radius: var(--r-md);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-soft);
}
.quote .mark { font-family: var(--font-display); font-size: 2.4rem; color: var(--signet); line-height: 0.6; height: 22px; }
.quote p { color: var(--muted); font-size: 1rem; margin: 14px 0 22px; }
.quote .by { margin-top: auto; }
.quote .name { font-weight: 600; font-size: 0.95rem; color: var(--ink); }
.quote .role { font-size: 0.84rem; color: var(--muted); }
.trust {
  margin-top: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 38px;
  flex-wrap: wrap;
  border-top: 1px solid var(--n-300);
  padding-top: 34px;
}
.trust span {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.86rem;
  color: var(--muted);
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 820px;
  margin: 0 auto;
}
.plan {
  background: #fff;
  border: 1px solid var(--n-300);
  border-radius: var(--r-md);
  padding: 34px 30px;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
}
.plan.featured {
  border-color: var(--signet);
  box-shadow: 0 0 0 1px var(--signet), var(--shadow-lift);
  position: relative;
}
.plan .badge {
  position: absolute;
  top: -11px; left: 30px;
  background: var(--signet);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 11px;
  border-radius: var(--r-pill);
}
.plan .pname { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--ink); }
.plan .price {
  font-family: var(--font-display);
  font-size: 2.7rem;
  font-weight: 600;
  margin: 14px 0 4px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.plan .price .per { font-family: var(--font-body); font-size: 0.92rem; color: var(--muted); font-weight: 400; }
.plan .pdesc { color: var(--muted); font-size: 0.95rem; margin-bottom: 22px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 26px; }
.plan li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 9px 0;
  font-size: 0.95rem;
  color: var(--muted);
  border-top: 1px solid var(--n-300);
}
.plan li svg { flex: none; margin-top: 3px; color: var(--signet); }
.plan .btn { width: 100%; margin-top: auto; }

/* ---- FAQ ---- */
.faq { max-width: 760px; margin: 0 auto; }
.faq details {
  border-top: 1px solid var(--n-300);
  padding: 22px 0;
}
.faq details:last-child { border-bottom: 1px solid var(--n-300); }
.faq summary {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .chev { transition: transform .2s ease; color: var(--muted); flex: none; }
.faq details[open] summary .chev { transform: rotate(45deg); }
.faq details p { color: var(--muted); font-size: 1rem; margin-top: 14px; max-width: 66ch; }

/* ============================================================
   DARK SECTION
   ============================================================ */
.dark-mode {
  background: var(--d-bg);
  color: var(--d-text);
}
.dark-mode h2 { color: var(--d-text); }
.dark-mode .section-head p { color: var(--d-muted); }
.dark-mode .eyebrow { color: var(--d-muted); }
.dark-mode .panel {
  background: var(--d-surface);
  border: 1px solid rgba(154,166,182,0.18);
  border-radius: var(--r-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}
.dark-mode .panel h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 6px 0 16px; }
.dark-mode .panel p { color: var(--d-muted); font-size: 1.02rem; }
.dark-mode .panel .btn-row { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }
.dark-mock {
  background: #11161C;
  border: 1px solid rgba(154,166,182,0.18);
  border-radius: var(--r-sm);
  padding: 20px;
}
.dark-mock .dm-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(154,166,182,0.18);
}
.dark-mock .dm-row:last-child { border-bottom: none; }
.dark-mock .dm-code {
  font-family: var(--font-mono);
  font-size: 1.02rem;
  color: var(--d-text);
}
.dark-mock .dm-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--d-accent); }

/* ============================================================
   COMPARISON (placeholder structure)
   ============================================================ */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 8px;
}
.compare-col {
  background: #fff;
  border: 1px solid var(--n-300);
  border-radius: var(--r-md);
  padding: 30px 28px;
  box-shadow: var(--shadow-soft);
}
.compare-col h3 { font-size: 1.3rem; margin-bottom: 6px; }
.compare-col .sub { color: var(--muted); font-size: 0.95rem; margin-bottom: 18px; }
.placeholder-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--parchment);
  border: 1px solid var(--n-300);
  border-left: 3px solid var(--signet);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  margin: 18px 0;
  color: var(--text);
  font-size: 0.95rem;
}
.placeholder-note svg { flex: none; color: var(--signet); margin-top: 2px; }
.placeholder-banner {
  background: var(--parchment);
  border: 1px dashed var(--signet);
  border-radius: var(--r-md);
  padding: 22px 24px;
  margin-bottom: 40px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.placeholder-banner .pb-ico { flex: none; color: var(--signet); margin-top: 2px; }
.placeholder-banner h3 { font-size: 1.1rem; margin-bottom: 6px; }
.placeholder-banner p { color: var(--muted); font-size: 0.95rem; max-width: 66ch; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--paper);
  border-top: 1px solid var(--n-300);
  padding: 64px 0 40px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 44px;
}
.foot-brand .wordmark { font-size: 1.1rem; }
.foot-brand p { color: var(--muted); font-size: 0.9rem; margin-top: 14px; max-width: 24em; }
.foot-col h4 {
  font-family: var(--font-heading);
  font-weight: 600; font-size: 0.78rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink); margin: 0 0 16px;
}
.foot-col a { display: block; color: var(--muted); font-size: 0.92rem; padding: 6px 0; }
.foot-col a:hover { color: var(--ink); }
.foot-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 26px; border-top: 1px solid var(--n-300);
  color: var(--muted); font-size: 0.85rem; flex-wrap: wrap; gap: 12px;
}
.foot-bottom a { color: var(--muted); }
.foot-bottom a:hover { color: var(--ink); }

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .features-grid, .proof-grid, .steps { grid-template-columns: 1fr; }
  .steps { gap: 18px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .dark-mode .panel { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-cta .btn-ghost { display: none; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .hero { padding: 64px 0 56px; }
  section { padding: 64px 0; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-actions .btn { width: 100%; }
  .dark-mode .panel { padding: 28px; }
}
@media (max-width: 360px) {
  .wrap { padding: 0 16px; }
  .wordmark { font-size: 1.05rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .btn, .feature, .mock-scan { transition: none !important; }
}