/* ==========================================================================
   World Book of Researchers — Design System
   Concept: the international scholarly "card catalog" — every researcher,
   journal, and title is treated like a library index card: punched hole,
   dashed tab, ruled lines, a mono "call number." Ink navy stacks against
   warm cream card stock, with brass and burgundy as the two accent inks
   a librarian would actually stamp with.
   ========================================================================== */

:root{
  /* Color */
  --ink:        #14213D;   /* primary navy — page background, headers */
  --ink-2:      #1E3055;   /* raised navy panels */
  --paper:      #F3ECDA;   /* card stock cream */
  --paper-dim:  #E8DEC6;   /* card stock shadow tint */
  --brass:      #C9A24B;   /* primary accent — links, rules, tabs */
  --brass-dim:  #9C7B34;
  --burgundy:   #8C2F39;   /* secondary accent — CTAs, tags */
  --burgundy-dim:#6E232B;
  --ink-text:   #1B1B18;   /* body text on paper */
  --cream-text: #F3ECDA;   /* body text on ink */
  --line:       rgba(20,33,61,0.18);
  --line-on-ink:rgba(243,236,218,0.22);

  /* Type */
  --font-display: "Playfair Display", "Iowan Old Style", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  /* Layout */
  --maxw: 1180px;
  --radius: 2px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--ink);
  color: var(--cream-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: var(--brass); text-decoration: none; }
a:hover{ color: #E0BE72; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .5em;
  color: inherit;
}
p{ margin: 0 0 1em; }
.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}
.mono{ font-family: var(--font-mono); letter-spacing: .04em; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brass);
  display: inline-block;
  margin-bottom: 14px;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

/* ==========================================================================
   Ticker bar (date / trending) — echoes the original site's top strip
   ========================================================================== */
.ticker{
  background: #0B1526;
  border-bottom: 1px solid var(--line-on-ink);
  font-family: var(--font-mono);
  font-size: 12px;
}
.ticker .container{
  display:flex;
  align-items:center;
  gap: 18px;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: wrap;
}
.ticker .date{ color: rgba(243,236,218,.6); letter-spacing:.05em; }
.ticker .tag{
  background: var(--burgundy);
  color: var(--cream-text);
  padding: 3px 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 11px;
}
.ticker .headline{ color: var(--cream-text); opacity:.85; }

/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header{
  background: var(--ink);
  border-bottom: 1px solid var(--line-on-ink);
}
.brand-row{
  display:flex;
  justify-content:center;
  padding: 34px 0 22px;
}
.brand{
  display:flex;
  align-items:center;
  gap:16px;
  text-align:left;
}
.brand img{ width:56px; height:56px; }
.brand .wordmark{
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--cream-text);
  line-height:1.1;
}
.brand .wordmark small{
  display:block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing:.22em;
  color: var(--brass);
  margin-top: 4px;
}

nav.primary{
  background: var(--paper);
  color: var(--ink-text);
  border-top: 1px solid var(--brass);
  border-bottom: 4px solid var(--ink);
}
nav.primary .container{
  display:flex;
  justify-content:center;
}
nav.primary ul{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  margin:0; padding:0;
}
nav.primary li{ position:relative; }
nav.primary a{
  display:block;
  padding: 16px 18px;
  color: var(--ink-text);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing:.08em;
  text-transform: uppercase;
  border-right: 1px solid var(--line);
}
nav.primary li:last-child a{ border-right:none; }
nav.primary a:hover, nav.primary a[aria-current="page"]{
  background: var(--ink);
  color: var(--brass);
}
.nav-toggle{ display:none; }

/* submenu */
nav.primary .has-sub{ position:relative; }
nav.primary .sub{
  list-style:none;
  margin:0; padding:0;
  position:absolute;
  top:100%; left:0;
  background: var(--ink);
  min-width: 220px;
  border:1px solid var(--line-on-ink);
  display:none;
  z-index: 20;
}
nav.primary .has-sub:hover .sub,
nav.primary .has-sub:focus-within .sub{ display:block; }
nav.primary .sub a{
  color: var(--cream-text);
  border-right:none;
  border-bottom:1px solid var(--line-on-ink);
  padding: 12px 16px;
}
nav.primary .sub a:hover{ color: var(--brass); background: var(--ink-2); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  background: var(--ink);
  padding: 70px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero .container{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items:center;
}
.hero h1{
  font-size: clamp(38px, 5vw, 58px);
  color: var(--cream-text);
}
.hero h1 em{ color: var(--brass); font-style: normal; }
.hero .lede{
  font-size: 18px;
  color: rgba(243,236,218,.82);
  max-width: 46ch;
}
.hero .actions{ display:flex; gap:16px; margin-top: 28px; flex-wrap:wrap; }
.hero .stamp{
  margin-top: 40px;
  display:flex;
  gap: 28px;
  flex-wrap:wrap;
}
.hero .stamp div{ font-family: var(--font-mono); font-size: 12px; color: rgba(243,236,218,.6); }
.hero .stamp strong{ display:block; font-family: var(--font-display); font-size: 26px; color: var(--brass); }

.hero-card-wrap{ display:flex; justify-content:center; }
.hero-card-wrap img{ width: 100%; max-width: 320px; filter: drop-shadow(0 24px 40px rgba(0,0,0,.45)); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 13px 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor:pointer;
  border-radius: var(--radius);
}
.btn-primary{ background: var(--burgundy); color: var(--cream-text); }
.btn-primary:hover{ background: var(--burgundy-dim); color:#fff; }
.btn-outline{ border-color: var(--brass); color: var(--brass); background:transparent; }
.btn-outline:hover{ background: var(--brass); color: var(--ink); }
.btn-outline.on-paper{ border-color: var(--ink); color: var(--ink); }
.btn-outline.on-paper:hover{ background: var(--ink); color: var(--paper); }

/* ==========================================================================
   Section shells
   ========================================================================== */
section{ padding: 76px 0; }
.section-paper{ background: var(--paper); color: var(--ink-text); }
.section-ink{ background: var(--ink); color: var(--cream-text); }
.section-ink-2{ background: var(--ink-2); color: var(--cream-text); }
.section-head{ text-align:center; max-width: 640px; margin: 0 auto 48px; }
.section-head h2{ font-size: clamp(28px,3.4vw,38px); }
.section-paper .eyebrow{ color: var(--burgundy); }

/* Page header for interior pages */
.page-header{
  background: var(--ink);
  padding: 56px 0 60px;
  border-bottom: 4px solid var(--brass);
}
.page-header .eyebrow{ margin-bottom: 10px; }
.page-header h1{ color: var(--cream-text); font-size: clamp(32px,4vw,46px); margin-bottom: 8px;}
.page-header p{ color: rgba(243,236,218,.75); max-width: 60ch; margin:0; }
.breadcrumb{
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(243,236,218,.55);
  margin-bottom: 16px;
  letter-spacing:.05em;
}
.breadcrumb a{ color: rgba(243,236,218,.75); }

/* ==========================================================================
   Catalog card — the signature component
   ========================================================================== */
.catalog-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.catalog-card{
  background: var(--paper);
  color: var(--ink-text);
  border: 1px solid var(--line);
  padding: 26px 24px 22px;
  position: relative;
  box-shadow: 6px 6px 0 var(--paper-dim);
}
.catalog-card::before{
  content:"";
  position:absolute;
  top: 14px; right: 16px;
  width: 12px; height: 12px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: inset 0 0 0 3px var(--paper);
}
.catalog-card .call-no{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing:.08em;
  color: var(--burgundy);
  margin-bottom: 10px;
  display:block;
}
.catalog-card h3{ font-size: 20px; margin-bottom: 6px; }
.catalog-card .role{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass-dim);
  margin-bottom: 12px;
  display:block;
}
.catalog-card p{ font-size: 14px; margin-bottom: 14px; }
.catalog-card hr{
  border:none; border-top: 1px dashed var(--line);
  margin: 14px 0;
}
.catalog-card .card-icon{ width: 44px; height:44px; margin-bottom: 14px; }
.catalog-card a.card-link{
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--ink-text);
  border-bottom: 1px solid var(--brass);
  padding-bottom: 2px;
}
.catalog-card a.card-link:hover{ color: var(--burgundy); }

/* ==========================================================================
   Services / feature list
   ========================================================================== */
.feature-grid{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 30px;
}
.feature{ text-align:center; padding: 0 10px; }
.feature .icon-tile{
  width: 72px; height: 72px;
  background: var(--brass);
  display:flex; align-items:center; justify-content:center;
  margin: 0 auto 20px;
}
.feature .icon-tile img{ width: 34px; height:34px; }
.feature h3{ font-size: 19px; margin-bottom: 10px; }
.feature p{ font-size: 14.5px; opacity:.85; }

/* ==========================================================================
   Two column / content blocks
   ========================================================================== */
.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items:center;
}
.stat-row{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
  text-align:center;
}
.stat-row .num{
  font-family: var(--font-display);
  font-size: 40px;
  color: var(--brass);
}
.stat-row .label{ font-family: var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; opacity:.7;}

/* Pricing */
.price-grid{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 26px;
  align-items:stretch;
}
.price-card{
  background: var(--paper);
  color: var(--ink-text);
  padding: 32px 28px;
  border: 1px solid var(--line);
  display:flex; flex-direction:column;
}
.price-card.featured{
  border: 2px solid var(--burgundy);
  transform: translateY(-10px);
  box-shadow: 8px 8px 0 var(--paper-dim);
}
.price-card .tier{ font-family: var(--font-mono); text-transform:uppercase; letter-spacing:.1em; font-size:12px; color: var(--burgundy); margin-bottom:8px;}
.price-card .amount{ font-family: var(--font-display); font-size: 42px; margin-bottom: 4px;}
.price-card .amount span{ font-size:15px; font-family: var(--font-body); font-weight:400; opacity:.6;}
.price-card ul{ list-style:none; padding:0; margin: 20px 0 26px; flex-grow:1;}
.price-card li{ padding: 8px 0; border-top: 1px dashed var(--line); font-size:14px; }
.price-card li:first-child{ border-top:none; }

/* FAQ accordion */
.faq-item{
  border-bottom: 1px solid var(--line-on-ink);
}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  padding: 20px 0;
  font-family: var(--font-display);
  font-size: 18px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 20px;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{
  content:"+";
  font-family: var(--font-mono);
  color: var(--brass);
  font-size: 22px;
  flex-shrink:0;
}
.faq-item[open] summary::after{ content:"–"; }
.faq-item .answer{ padding: 0 0 22px; max-width: 70ch; opacity:.85; }

/* Forms */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap: 18px; }
.field{ display:flex; flex-direction:column; gap:6px; margin-bottom:18px; }
.field.full{ grid-column: 1/-1; }
label{ font-family: var(--font-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; }
input, select, textarea{
  font-family: var(--font-body);
  font-size:15px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-text);
}
textarea{ resize: vertical; min-height:120px; }

/* Table (indexing) */
table.index-table{ width:100%; border-collapse:collapse; font-size:14.5px; }
table.index-table th, table.index-table td{
  text-align:left; padding: 12px 14px; border-bottom: 1px solid var(--line);
}
table.index-table th{
  font-family: var(--font-mono); text-transform:uppercase; font-size:11px; letter-spacing:.08em; color: var(--burgundy);
}

/* Footer */
footer.site-footer{
  background: #0B1526;
  padding: 56px 0 24px;
  color: rgba(243,236,218,.75);
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line-on-ink);
}
.footer-grid h4{
  color: var(--brass);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  margin-bottom: 16px;
}
.footer-grid ul{ list-style:none; padding:0; margin:0; }
.footer-grid li{ margin-bottom: 10px; font-size: 14px; }
.footer-grid a{ color: rgba(243,236,218,.75); }
.footer-grid a:hover{ color: var(--brass); }
.footer-brand{ display:flex; gap:12px; align-items:center; margin-bottom:14px;}
.footer-brand img{ width:36px; height:36px; }
.footer-brand span{ font-family: var(--font-display); font-size:19px; color: var(--cream-text); }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  opacity:.6;
}

/* Utility */
.center{ text-align:center; }
.mt-lg{ margin-top:48px; }
.text-muted{ opacity:.7; }
.badge{
  display:inline-block;
  font-family: var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  padding: 4px 10px;
  border: 1px solid var(--brass);
  color: var(--brass);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px){
  .hero .container{ grid-template-columns: 1fr; }
  .hero-card-wrap{ order:-1; }
  .catalog-grid, .feature-grid, .price-grid{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .split{ grid-template-columns:1fr; }
  .stat-row{ grid-template-columns: repeat(2,1fr); }
  nav.primary ul{ display:none; }
  .nav-toggle{
    display:block;
    width:100%;
    text-align:center;
    padding: 14px;
    font-family: var(--font-mono);
    letter-spacing:.1em;
    text-transform:uppercase;
    background: var(--paper);
    color: var(--ink-text);
    border:none;
    cursor:pointer;
  }
  nav.primary.open ul{
    display:flex;
    flex-direction:column;
    width:100%;
  }
  nav.primary.open a{ border-right:none; border-bottom:1px solid var(--line); }
  nav.primary .sub{ position:static; display:none; border:none; }
  nav.primary .has-sub.open .sub{ display:block; }
}
@media (max-width: 640px){
  .catalog-grid, .feature-grid, .price-grid, .form-grid{ grid-template-columns: 1fr; }
  .price-card.featured{ transform:none; }
  .stat-row{ grid-template-columns: 1fr 1fr; }
}