/* =========================================================================
   Bates Numbering — "Renaissance Gallery" (putty paper legal) stylesheet
   Palette: putty #EAE6DE / charcoal #26241F / oxblood #6E1F26
   Type: classical serif system stack (Georgia/Times), generous margins,
   engraved-rule dividers, roman-numeral markers, document-stamp motifs.
   ========================================================================= */

:root {
  --putty: #EAE6DE;
  --putty-deep: #DFDACD;
  --putty-line: #C9C2AE;
  --charcoal: #26241F;
  --charcoal-soft: #4A473E;
  --oxblood: #6E1F26;
  --oxblood-deep: #551419;
  --oxblood-tint: #F1E4E1;
  --paper-white: #F7F5EF;
  --shadow: rgba(38, 36, 31, 0.16);
  --serif: Georgia, "Times New Roman", Times, "Iowan Old Style", serif;
  --serif-display: Georgia, "Times New Roman", Times, serif;
  --radius: 2px;
  --max-w: 74rem;
  --rule: 1px solid var(--putty-line);
}

/* ---------- Spacing scale (4/8-based) ---------- */
:root {
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-14: 3.5rem;  /* 56px */
  --space-18: 4.5rem;  /* 72px */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background-color: var(--putty);
  background-image:
    radial-gradient(ellipse at top left, rgba(110, 31, 38, 0.03), transparent 55%),
    radial-gradient(ellipse at bottom right, rgba(38, 36, 31, 0.035), transparent 55%);
  color: var(--charcoal);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--oxblood);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--oxblood-deep); }

:focus-visible {
  outline: 2px solid var(--oxblood);
  outline-offset: 3px;
  border-radius: 1px;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.75rem;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  z-index: 100;
  background: var(--charcoal);
  color: var(--paper-white);
  font-family: var(--serif-display);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: top 0.15s var(--ease-out);
}
.skip-link:focus-visible,
.skip-link:focus {
  top: 1rem;
  outline: 2px solid var(--oxblood-tint);
  outline-offset: 3px;
}

/* ---------- Engraved rule divider ---------- */
.engraved-rule {
  border: none;
  height: 6px;
  margin: 3rem auto;
  max-width: var(--max-w);
  background: none;
  position: relative;
}
.engraved-rule::before,
.engraved-rule::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
}
.engraved-rule::before { top: 0; border-top: 2px solid var(--charcoal); opacity: 0.75; }
.engraved-rule::after { top: 4px; border-top: 1px solid var(--putty-line); }

.rule-thin {
  border: none;
  border-top: var(--rule);
  margin: 2.25rem 0;
}

/* ---------- Header / Nav ---------- */
.site-header {
  border-bottom: 3px double var(--charcoal);
  background: rgba(223, 218, 205, 0.88);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  backdrop-filter: saturate(160%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 40;
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header { background: var(--putty-deep); }
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--serif-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  color: var(--charcoal);
  text-decoration: none;
}
.brand:hover { color: var(--oxblood); }
.brand-mark { width: 34px; height: 34px; flex: none; }
.brand small {
  display: block;
  font-family: Georgia, serif;
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--oxblood);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.main-nav a:not(.btn) {
  color: var(--charcoal);
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.15s ease, color 0.15s ease;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.main-nav a:not(.btn):hover { border-bottom-color: var(--oxblood); color: var(--oxblood); }
.main-nav a:not(.btn):active { color: var(--oxblood-deep); border-bottom-color: var(--oxblood-deep); }

.nav-links { display: flex; align-items: center; gap: 1.75rem; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  background: none;
  border: 1px solid var(--charcoal);
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font-family: var(--serif);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  color: var(--charcoal);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.nav-toggle:hover { border-color: var(--oxblood); color: var(--oxblood); }
.nav-toggle:active { background: var(--oxblood-tint); }
.nav-toggle:focus-visible { outline: 2px solid var(--oxblood); outline-offset: 3px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--serif-display);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-decoration: none;
  border: 1px solid var(--oxblood);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.btn-primary {
  background: var(--oxblood);
  color: var(--paper-white);
}
.btn-primary:hover { background: var(--oxblood-deep); color: var(--paper-white); transform: translateY(-1px); }
.btn-primary:active { background: var(--oxblood-deep); transform: translateY(0); }
.btn-ghost {
  background: transparent;
  color: var(--oxblood);
}
.btn-ghost:hover { background: var(--oxblood-tint); }
.btn-ghost:active { background: var(--oxblood-tint); border-color: var(--oxblood-deep); color: var(--oxblood-deep); }
.btn:focus-visible { outline: 2px solid var(--oxblood); outline-offset: 3px; }
.btn { min-height: 44px; }
.btn-small { padding: 0.6rem 1rem; font-size: 0.85rem; min-height: 44px; }

/* ---------- Hero ---------- */
.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}
.hero-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--oxblood);
  margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--serif-display);
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  line-height: 1.15;
  margin: 0 0 1.1rem;
  color: var(--charcoal);
}
.hero .subhead {
  font-size: 1.15rem;
  color: var(--charcoal-soft);
  max-width: 42ch;
  margin: 0 0 1.75rem;
}
.hero-cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.trust-line {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--charcoal-soft);
  letter-spacing: 0.02em;
}
.trust-line::before { content: "— "; color: var(--oxblood); }

.hero-figure {
  border: 1px solid var(--putty-line);
  background: var(--paper-white);
  padding: 1.75rem;
  box-shadow: 0 12px 32px var(--shadow);
  position: relative;
}
.hero-figure::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--putty-line);
  pointer-events: none;
}

/* ---------- Hero load reveal (staggered fade-up) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero-eyebrow,
  .hero h1,
  .hero .subhead,
  .hero-cta-row,
  .hero .trust-line,
  .hero-figure {
    opacity: 0;
    animation: hero-fade-up 0.6s var(--ease-out) forwards;
  }
  .hero-eyebrow  { animation-delay: 0.05s; }
  .hero h1       { animation-delay: 0.14s; }
  .hero .subhead { animation-delay: 0.24s; }
  .hero-cta-row  { animation-delay: 0.34s; }
  .hero .trust-line { animation-delay: 0.42s; }
  .hero-figure   { animation-delay: 0.22s; }
}
@keyframes hero-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Section markers (roman numerals) ---------- */
.section-marker {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin: 0 0 2rem;
}
.section-marker .numeral {
  font-family: var(--serif-display);
  font-size: 2.1rem;
  color: var(--oxblood);
  line-height: 1;
}
.section-marker h2 {
  margin: 0;
  font-family: var(--serif-display);
  font-size: 1.7rem;
  color: var(--charcoal);
}
section { padding: 3.5rem 0; }
section.alt { background: var(--putty-deep); border-top: var(--rule); border-bottom: var(--rule); }

/* ---------- How it works ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.step {
  background: var(--paper-white);
  border: 1px solid var(--putty-line);
  padding: 1.75rem;
  position: relative;
}
.step .step-num {
  position: absolute;
  top: -0.9rem;
  left: 1.5rem;
  background: var(--oxblood);
  color: var(--paper-white);
  font-family: var(--serif-display);
  font-size: 0.85rem;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step svg { width: 44px; height: 44px; margin-bottom: 0.9rem; color: var(--oxblood); }
.step h3 { font-family: var(--serif-display); margin: 0 0 0.5rem; font-size: 1.15rem; }
.step p { margin: 0; color: var(--charcoal-soft); font-size: 0.96rem; }

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.feature-card {
  border: 1px solid var(--putty-line);
  padding: 1.6rem;
  background: var(--paper-white);
}
.feature-card h3 {
  font-family: var(--serif-display);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--oxblood-deep);
}
.feature-card p { margin: 0; font-size: 0.94rem; color: var(--charcoal-soft); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 52rem; }
.faq-item {
  border-bottom: var(--rule);
  padding: 1.1rem 0;
}
.faq-item summary {
  cursor: pointer;
  font-family: var(--serif-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--charcoal);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary { min-height: 44px; }
.faq-item summary:hover { color: var(--oxblood); }
.faq-item summary:focus-visible {
  outline: 2px solid var(--oxblood);
  outline-offset: 4px;
}
.faq-item summary::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--oxblood);
  flex: none;
  transition: transform 0.22s var(--ease-out);
  transform: rotate(0deg);
}
.faq-item[open] summary::after { transform: rotate(135deg); }
.faq-item p {
  margin: 0.8rem 0 0;
  color: var(--charcoal-soft);
}
@media (prefers-reduced-motion: no-preference) {
  .faq-item[open] p {
    animation: faq-reveal 0.28s var(--ease-out);
  }
}
@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Blog cards ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}
.blog-card {
  border: 1px solid var(--putty-line);
  background: var(--paper-white);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.blog-card:hover { box-shadow: 0 10px 26px var(--shadow); transform: translateY(-2px); border-color: var(--oxblood); }
.blog-card:active { box-shadow: 0 4px 14px var(--shadow); transform: translateY(-1px); }
.blog-card:focus-visible { outline: 2px solid var(--oxblood); outline-offset: 3px; }
.blog-card .kicker {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--oxblood);
}
.blog-card h3 { margin: 0; font-family: var(--serif-display); font-size: 1.25rem; color: var(--charcoal); }
.blog-card p { margin: 0; color: var(--charcoal-soft); font-size: 0.94rem; }
.blog-card .read-more { margin-top: auto; font-size: 0.88rem; font-weight: 700; color: var(--oxblood); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 3px double var(--charcoal);
  background: var(--putty-deep);
  padding: 3rem 0 2rem;
  margin-top: 3rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-col h4 {
  font-family: var(--serif-display);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oxblood);
  margin: 0 0 0.9rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.55rem; }
.footer-col a { color: var(--charcoal-soft); text-decoration: none; font-size: 0.92rem; }
.footer-col a:hover { color: var(--oxblood); }
.footer-bottom {
  border-top: var(--rule);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--charcoal-soft);
}
.footer-bottom a { color: var(--charcoal-soft); }
.footer-bottom a:hover { color: var(--oxblood); }

/* ---------- Article ---------- */
.article-header { padding: 3rem 0 1.5rem; }
.breadcrumb { font-size: 0.82rem; color: var(--charcoal-soft); margin-bottom: 1.2rem; }
.breadcrumb a { color: var(--charcoal-soft); }
.article-header h1 {
  font-family: var(--serif-display);
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  line-height: 1.2;
  margin: 0 0 1rem;
}
.byline { font-size: 0.88rem; color: var(--oxblood); font-style: italic; margin-bottom: 1.5rem; }

.answer-block {
  border: 2px solid var(--charcoal);
  background: var(--paper-white);
  padding: 1.5rem 1.75rem;
  margin: 0 0 2.5rem;
  position: relative;
}
.answer-block::before {
  content: "IN BRIEF";
  position: absolute;
  top: -0.7rem;
  left: 1.5rem;
  background: var(--putty);
  padding: 0 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--oxblood);
  font-family: var(--serif-display);
}
.answer-block p { margin: 0; font-size: 1.08rem; color: var(--charcoal); }

.article-body { max-width: 70ch; margin: 0 auto; counter-reset: article-section; }
.article-body h2 {
  font-family: var(--serif-display);
  font-size: clamp(1.3rem, 2.2vw, 1.55rem);
  margin: 2.5rem 0 1rem;
  color: var(--charcoal);
  border-bottom: 1px solid var(--putty-line);
  padding-bottom: 0.5rem;
  counter-increment: article-section;
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}
.article-body h2[id]::before {
  content: counter(article-section, upper-roman) ".";
  font-size: 0.85em;
  color: var(--oxblood);
  flex: none;
}
.article-body h3 {
  font-family: var(--serif-display);
  font-size: 1.2rem;
  margin: 1.8rem 0 0.75rem;
  color: var(--oxblood-deep);
}
.article-body p { margin: 0 0 1.1rem; }
.article-body ul, .article-body ol { margin: 0 0 1.2rem; padding-left: 1.4rem; }
.article-body li { margin-bottom: 0.5rem; }
.article-body figure {
  margin: 2rem 0;
  border: 1px solid var(--putty-line);
  background: var(--paper-white);
  padding: 1.25rem;
}
.article-body figcaption {
  font-size: 0.85rem;
  color: var(--charcoal-soft);
  margin-top: 0.75rem;
  text-align: center;
  font-style: italic;
}
.article-body svg { width: 100%; height: auto; max-width: 640px; margin: 0 auto; display: block; }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0 2rem;
  border: 1px solid transparent;
  scrollbar-color: var(--oxblood) var(--putty-deep);
  scrollbar-width: thin;
}
.table-wrap table { margin: 0; }

table {
  width: 100%;
  min-width: 30rem;
  border-collapse: collapse;
  margin: 1.5rem 0 2rem;
  font-size: 0.94rem;
}
.table-wrap table { min-width: 34rem; }
caption {
  text-align: left;
  font-size: 0.85rem;
  color: var(--charcoal-soft);
  margin-bottom: 0.5rem;
  font-style: italic;
}
th, td {
  border: 1px solid var(--putty-line);
  padding: 0.7rem 0.85rem;
  text-align: left;
}
td { font-variant-numeric: tabular-nums; }
th {
  background: var(--putty-deep);
  font-family: var(--serif-display);
  font-weight: 700;
  color: var(--charcoal);
  border-bottom: 2px solid var(--charcoal);
}
tbody tr:nth-child(even) { background: rgba(234, 230, 222, 0.4); }
tbody tr:hover { background: var(--oxblood-tint); }

.callout {
  border-left: 4px solid var(--oxblood);
  background: var(--oxblood-tint);
  padding: 1rem 1.3rem;
  margin: 1.75rem 0;
  font-size: 0.96rem;
}

/* ---------- Citation-style blockquote ---------- */
.article-body blockquote {
  position: relative;
  margin: 2rem 0;
  padding: 1.25rem 1.75rem 1.25rem 2.1rem;
  background: var(--oxblood-tint);
  border-left: 4px solid var(--oxblood);
}
.article-body blockquote::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 0.35rem;
  bottom: 0.35rem;
  border-left: 1px solid rgba(110, 31, 38, 0.35);
}
.article-body blockquote p {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 1.12rem;
  line-height: 1.55;
  color: var(--charcoal);
  margin: 0 0 0.6rem;
}
.article-body blockquote cite {
  display: block;
  font-style: normal;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oxblood-deep);
}

.article-cta {
  border: 1px solid var(--charcoal);
  background: var(--putty-deep);
  padding: 2rem;
  margin: 3rem 0;
  text-align: center;
}
.article-cta h3 { font-family: var(--serif-display); margin: 0 0 0.6rem; }
.article-cta p { color: var(--charcoal-soft); margin: 0 0 1.25rem; }

.external-source {
  font-size: 0.85rem;
  color: var(--charcoal-soft);
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: var(--rule);
}

/* ---------- Stamp motif ---------- */
.stamp-motif { color: var(--oxblood); }

/* ---------- 404 ---------- */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem;
}
.error-page .numeral-big {
  font-family: var(--serif-display);
  font-size: 5rem;
  color: var(--oxblood);
  margin: 0;
  line-height: 1;
}
.error-page h1 { font-family: var(--serif-display); font-size: 1.8rem; margin: 0.5rem 0 1rem; }
.error-page p { color: var(--charcoal-soft); margin-bottom: 1.75rem; }
.error-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Nav collapses earlier than the general content breakpoint: four nav items
   (Home / Blog / Imposition Hub / Open the free tool) plus the brand mark
   crowd the header well before 640px. */
@media (max-width: 860px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--putty-deep);
    border-bottom: 3px double var(--charcoal);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem 1.75rem 1.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 0.7rem 0; width: 100%; border-bottom: var(--rule); min-height: 44px; }
  .nav-links .btn { margin-top: 0.75rem; width: 100%; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .footer-bottom { flex-direction: column; }
  section { padding: 2.5rem 0; }
  .hero { padding: 3rem 0 2.5rem; }
}