/* ==========================================================================
   ResearchTips — shared stylesheet
   Design language: academic masthead + library index-card motif
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --ink:        #16233F;
  --ink-2:      #223257;
  --ink-text:   #1A1A1A;
  --paper:      #FFFFFF;
  --paper-2:    #F5F6F3;
  --card:       #FFFFFF;
  --brass:      #B08D57;
  --brass-dark: #8C6D3F;
  --teal:       #3C6E71;
  --muted:      #5C6470;
  --line:       #DCD8C9;
  --line-dark:  rgba(255,255,255,.18);
  --radius-s:   3px;
  --radius-m:   6px;
  --shadow:     0 10px 30px rgba(22,35,63,.10);
  --max:        1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-text);
  font-family:'Inter',sans-serif;
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Source Serif 4',serif;
  font-weight:700;
  color:var(--ink);
  line-height:1.15;
  margin:0 0 .5em;
}
p{ margin:0 0 1em; color:var(--ink-text); }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
ul{ margin:0; padding:0; list-style:none; }
.container{ max-width:1500px; width:85%; margin:0 auto; padding:0 12px; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--brass); outline-offset:2px;
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- eyebrow / labels (used sparingly, masthead vernacular) ---------- */
.eyebrow{
  font-size:.72rem;
  letter-spacing:.14em;
  font-weight:600;
  color:var(--brass-dark);
  text-transform:uppercase;
  display:inline-block;
  margin-bottom:.65em;
}

/* ---------- top masthead strip ---------- */
.masthead-strip{
  background:var(--ink);
  color:#D9DEE9;
  font-size:.78rem;
}
.masthead-strip .container{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:8px; padding-bottom:8px;
  flex-wrap:wrap; gap:6px;
}
.masthead-strip a{ color:#D9DEE9; }
.masthead-strip a:hover{ color:var(--brass); }
.masthead-strip .divider{ opacity:.4; margin:0 10px; }

/* ---------- primary nav ---------- */
header.site-header{
  background:var(--paper);
  border-bottom:3px solid var(--brass);
  position:sticky; top:0; z-index:50;
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 0;
}
.logo{
  font-family:'Source Serif 4',serif;
  font-weight:700;
  font-size:1.5rem;
  color:var(--ink);
  letter-spacing:.01em;
  display:flex; align-items:baseline; gap:8px;
}
.logo span{
  font-family:'Inter',sans-serif;
  font-weight:600;
  font-size:.62rem;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:var(--brass-dark);
  background:var(--paper-2);
  border:1px solid var(--line);
  padding:2px 6px;
  border-radius:2px;
}
nav.main-nav{ display:flex; align-items:center; gap:2px; }
nav.main-nav > ul{ display:flex; align-items:center; gap:4px; }
nav.main-nav > ul > li{ position:relative; }
nav.main-nav > ul > li > a, nav.main-nav > ul > li > button.nav-toggle{
  display:flex; align-items:center; gap:5px;
  font-size:.95rem; font-weight:500;
  padding:10px 14px;
  color:var(--ink-text);
  background:none; border:none; cursor:pointer; font-family:'Inter',sans-serif;
}
nav.main-nav > ul > li > a:hover,
nav.main-nav > ul > li > button.nav-toggle:hover,
nav.main-nav > ul > li.active > a{
  color:var(--brass-dark);
}
nav.main-nav > ul > li.active > a{ font-weight:600; }
.caret{ width:9px; height:9px; margin-top:-2px; transition:transform .15s ease; }
li.has-dropdown.open .caret{ transform:rotate(180deg); }

.dropdown{
  position:absolute; top:100%; left:0;
  background:var(--card);
  border:1px solid var(--line);
  border-top:2px solid var(--brass);
  width:300px;
  box-shadow:var(--shadow);
  padding:6px;
  display:none;
  border-radius:0 0 var(--radius-m) var(--radius-m);
}
li.has-dropdown.open .dropdown{ display:block; }
.dropdown a{
  display:block; padding:10px 12px; font-size:.92rem;
  border-radius:var(--radius-s);
  color:var(--ink-text);
}
.dropdown a:hover{ background:var(--paper-2); color:var(--brass-dark); }
.dropdown a small{ display:block; color:var(--muted); font-size:.76rem; font-weight:400; margin-top:2px; }

.nav-cta{
  background:var(--ink);
  color:#fff !important;
  padding:9px 16px !important;
  border-radius:var(--radius-s);
  font-weight:600 !important;
  margin-left:6px;
}
.nav-cta:hover{ background:var(--brass-dark) !important; color:#fff !important; }

.mobile-toggle{ display:none; background:none; border:1px solid var(--line); border-radius:var(--radius-s); padding:8px; cursor:pointer; }
.mobile-toggle span{ display:block; width:20px; height:2px; background:var(--ink); margin:4px 0; }

@media (max-width: 900px){
  nav.main-nav{ display:none; width:100%; }
  nav.main-nav.open{ display:block; }
  nav.main-nav > ul{ flex-direction:column; align-items:stretch; padding:10px 0; gap:0; }
  nav.main-nav > ul > li > a, nav.main-nav > ul > li > button.nav-toggle{ width:100%; justify-content:space-between; padding:12px 4px; border-bottom:1px solid var(--line); }
  .dropdown{ position:static; box-shadow:none; border:none; border-top:1px dashed var(--line); display:none; padding:0 0 6px 14px; }
  li.has-dropdown.open .dropdown{ display:block; }
  .nav-row{ flex-wrap:wrap; }
  .mobile-toggle{ display:block; }
  .nav-cta{ margin:10px 0 0; text-align:center; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-weight:600; font-size:.92rem;
  padding:12px 22px;
  border-radius:var(--radius-s);
  border:1px solid transparent;
  cursor:pointer;
  font-family:'Inter',sans-serif;
}
.btn-primary{ background:var(--ink); color:#fff; }
.btn-primary:hover{ background:var(--ink-2); }
.btn-brass{ background:var(--brass); color:#fff; }
.btn-brass:hover{ background:var(--brass-dark); }
.btn-outline{ background:transparent; color:var(--ink); border-color:var(--ink); }
.btn-outline:hover{ background:var(--ink); color:#fff; }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-sm{ padding:8px 14px; font-size:.82rem; }

/* ---------- hero ---------- */
.hero{
  padding:64px 0 70px;
  background:
    radial-gradient(600px 300px at 90% -10%, rgba(176,141,87,.10), transparent 60%),
    var(--paper);
  border-bottom:1px solid var(--line);
}
.hero .container{
  display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;
}
.hero h1{ font-size:clamp(2.1rem,4vw,3.15rem); }
.hero .lede{ font-size:1.08rem; color:var(--muted); max-width:46ch; }
.hero-stats{ display:flex; gap:28px; margin-top:30px; flex-wrap:wrap; }
.hero-stats div{ border-left:2px solid var(--brass); padding-left:12px; }
.hero-stats strong{ display:block; font-family:'Source Serif 4',serif; font-size:1.4rem; color:var(--ink); }
.hero-stats span{ font-size:.78rem; color:var(--muted); }

.search-bar{
  display:flex; margin-top:30px; max-width:520px;
  border:1px solid var(--line); background:var(--card); border-radius:var(--radius-m); overflow:hidden;
}
.search-bar select, .search-bar input{
  border:none; background:transparent; padding:13px 14px; font-family:'Inter',sans-serif; font-size:.9rem; color:var(--ink-text);
}
.search-bar select{ border-right:1px solid var(--line); max-width:150px; }
.search-bar input{ flex:1; min-width:0; }
.search-bar button{ background:var(--brass); border:none; color:#fff; padding:0 20px; cursor:pointer; font-weight:600; }
.search-bar button:hover{ background:var(--brass-dark); }

/* ----- index-card stack (signature visual) ----- */
.card-stack{ position:relative; height:400px; }
.index-card{
  position:absolute; width:88%; background:var(--card);
  border:1px solid var(--line); border-top:4px solid var(--brass);
  border-radius:var(--radius-s);
  padding:20px 22px;
  box-shadow:0 18px 34px rgba(22,35,63,.14);
}
.index-card .tag{ font-size:.68rem; letter-spacing:.08em; text-transform:uppercase; font-weight:700; color:var(--teal); }
.index-card h4{ font-size:1.05rem; margin:.4em 0 .3em; }
.index-card p{ font-size:.84rem; color:var(--muted); margin-bottom:0; }
.index-card .meta{ display:flex; gap:14px; margin-top:12px; font-size:.76rem; color:var(--muted); }
.card-1{ top:0; left:0; transform:rotate(-4deg); z-index:1; }
.card-2{ top:70px; left:12%; transform:rotate(2.5deg); z-index:2; }
.card-3{ top:150px; left:2%; transform:rotate(-1.5deg); z-index:3; }

/* ---------- section scaffolding ---------- */
section{ padding:64px 0; }
.section-alt{ background:var(--paper-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ display:flex; justify-content:space-between; align-items:flex-end; gap:20px; margin-bottom:34px; flex-wrap:wrap; }
.section-head h2{ font-size:clamp(1.5rem,2.6vw,2.05rem); margin:0; }
.section-head p{ color:var(--muted); margin:0; max-width:52ch; }
.rule{ border:none; border-top:1px solid var(--line); margin:0 0 34px; }

/* ---------- filter chips ---------- */
.chip-row{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:32px; }
.chip{
  font-size:.82rem; padding:8px 15px; border:1px solid var(--line);
  border-radius:20px; cursor:pointer; background:var(--card); color:var(--ink-text);
}
.chip.active{ background:var(--ink); color:#fff; border-color:var(--ink); }
.chip:hover:not(.active){ border-color:var(--brass); color:var(--brass-dark); }

/* Rectangular subject/topic tab buttons (Conferences page filters) */
.subject-tab-row{ display:flex; flex-wrap:wrap; gap:10px; }
.subject-tab{
  font-size:.86rem; padding:10px 12px; border:1px solid transparent;
  border-radius:4px; cursor:pointer; white-space:nowrap; font-family:'Inter',sans-serif;
  background:var(--card); color:var(--ink-text); border-color:var(--line);
}
.subject-tab.active{ background:var(--ink); color:#fff; border-color:var(--ink); }
.subject-tab:hover:not(.active){ border-color:var(--brass); color:var(--brass-dark); }

/* Subject buttons get a distinct colour by default, and a bolder version of
   the same colour when active — cycles through 6 hues via data-color 0-5. */
.subject-tab[data-color="0"]{ background:#EBF2FF; color:#1F3B57; border-color:#D3E2F7; }
.subject-tab[data-color="0"].active{ background:#1F3B57; color:#fff; border-color:#1F3B57; }
.subject-tab[data-color="1"]{ background:#EAF7ED; color:#1B4D2E; border-color:#CFEAD6; }
.subject-tab[data-color="1"].active{ background:#1B4D2E; color:#fff; border-color:#1B4D2E; }
.subject-tab[data-color="2"]{ background:#F3ECFB; color:#4A2E6B; border-color:#E2D3F3; }
.subject-tab[data-color="2"].active{ background:#4A2E6B; color:#fff; border-color:#4A2E6B; }
.subject-tab[data-color="3"]{ background:#FDECEC; color:#7A1913; border-color:#F7D4D2; }
.subject-tab[data-color="3"].active{ background:#7A1913; color:#fff; border-color:#7A1913; }
.subject-tab[data-color="4"]{ background:#FDF3E3; color:#8C6D3F; border-color:#F3E1BE; }
.subject-tab[data-color="4"].active{ background:#8C6D3F; color:#fff; border-color:#8C6D3F; }
.subject-tab[data-color="5"]{ background:#E6F5F5; color:#1B4A4A; border-color:#C9E8E8; }
.subject-tab[data-color="5"].active{ background:#1B4A4A; color:#fff; border-color:#1B4A4A; }

/* "All", and topic chips (secondary row), stay neutral so the coloured
   subject row remains the primary visual anchor. */
.subject-tab[data-subject="all"]{ background:var(--paper-2); color:var(--ink-text); border-color:var(--line); }
.subject-tab[data-subject="all"].active{ background:var(--brass); color:#fff; border-color:var(--brass); }
.subject-tab.topic-chip{ background:var(--card); color:var(--ink-text); border-color:var(--line); }
.subject-tab.topic-chip.active{ background:var(--ink); color:#fff; border-color:var(--ink); }

/* ---------- listing cards (grid) ---------- */
.grid{ display:grid; gap:22px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
@media (max-width:980px){ .grid-3,.grid-4{ grid-template-columns:repeat(2,1fr); } .hero .container{ grid-template-columns:1fr; } .card-stack{ margin-top:20px; } }
@media (max-width:640px){ .grid-2,.grid-3,.grid-4{ grid-template-columns:1fr; } }

.listing-card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-m);
  overflow:hidden; display:flex; flex-direction:column;
  transition:box-shadow .15s ease, transform .15s ease;
}
.listing-card:hover{ box-shadow:var(--shadow); transform:translateY(-3px); }
.listing-card img{ height:150px; object-fit:cover; width:100%; border-bottom:3px solid var(--brass); }
.listing-body{ padding:18px 20px 20px; display:flex; flex-direction:column; gap:8px; flex:1; }
.listing-body .tag{ font-size:.68rem; letter-spacing:.07em; text-transform:uppercase; font-weight:700; color:var(--teal); }
.listing-body h3{ font-size:1.08rem; margin:0; }
.listing-body .meta-row{ display:flex; flex-wrap:wrap; gap:6px 14px; font-size:.8rem; color:var(--muted); margin-top:2px; }
.listing-body .meta-row span{ display:flex; align-items:center; gap:5px; }
.listing-body p.desc{ font-size:.88rem; color:var(--muted); margin:2px 0 4px; }
.listing-footer{ display:flex; justify-content:space-between; align-items:center; margin-top:auto; padding-top:10px; border-top:1px dashed var(--line); }
.badge{
  font-size:.7rem; font-weight:700; padding:3px 8px; border-radius:2px;
  background:var(--paper-2); color:var(--brass-dark); border:1px solid var(--line);
}
.badge-verified{ color:var(--teal); border-color:var(--teal); background:#EAF2F2; }

/* ---------- ticker / deadline strip ---------- */
.ticker{ background:var(--ink); color:#EDEFF4; padding:14px 0; overflow:hidden; }
.ticker .container{ display:flex; align-items:center; gap:18px; }
.ticker .eyebrow{ color:var(--brass); margin:0; white-space:nowrap; }
.ticker-track{ display:flex; gap:38px; overflow-x:auto; scrollbar-width:none; }
.ticker-track::-webkit-scrollbar{ display:none; }
.ticker-item{ white-space:nowrap; font-size:.86rem; display:flex; gap:8px; align-items:center; }
.ticker-item strong{ color:#fff; font-weight:600; }
.ticker-item .days{ color:var(--brass); font-weight:700; }

/* ---------- feature list (numbered — legit sequence use) ---------- */
.steps{ counter-reset:step; display:grid; grid-template-columns:repeat(4,1fr); gap:26px; }
.step{ position:relative; padding-top:6px; }
.step::before{
  counter-increment:step; content:counter(step);
  font-family:'Source Serif 4',serif; font-weight:700; font-size:1.6rem; color:var(--brass);
  display:block; margin-bottom:10px;
}
@media (max-width:900px){ .steps{ grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .steps{ grid-template-columns:1fr;} }

/* ---------- trust strip ---------- */
.trust{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.trust-item{ display:flex; gap:14px; }
.trust-item .mark{ width:38px; height:38px; flex:none; border-radius:50%; background:var(--paper-2); border:1px solid var(--line); display:flex; align-items:center; justify-content:center; color:var(--teal); }
@media (max-width:900px){ .trust{ grid-template-columns:1fr; } }

/* ---------- CTA band ---------- */
.cta-band{ background:var(--ink); color:#fff; padding:56px 0; }
.cta-band .container{ display:flex; justify-content:space-between; align-items:center; gap:30px; flex-wrap:wrap; }
.cta-band h2{ color:#fff; font-size:1.7rem; margin-bottom:6px; }
.cta-band p{ color:#C6CBDA; margin:0; }

/* ---------- newsletter ---------- */
.newsletter-box{
  background:var(--paper-2); border:1px solid var(--line); border-radius:var(--radius-m);
  padding:34px; display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap;
}
.newsletter-box form{ display:flex; gap:10px; }
.newsletter-box input[type=email]{ padding:12px 14px; border:1px solid var(--line); border-radius:var(--radius-s); min-width:240px; font-family:'Inter',sans-serif; }

/* ---------- blog cards ---------- */
.blog-card img{ height:190px; object-fit:cover; border-bottom:3px solid var(--brass); }
.blog-card .listing-body{ gap:10px; }
.blog-meta{ font-size:.78rem; color:var(--muted); }

/* ---------- resource tiles ---------- */
.resource-tile{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-m); padding:26px;
  display:flex; flex-direction:column; gap:10px; color:inherit; text-decoration:none;
}
a.resource-tile:hover{ border-color:var(--brass); box-shadow:var(--shadow); }
.resource-tile .mark{ width:40px; height:40px; border-radius:50%; background:var(--paper-2); border:1px solid var(--line); display:flex; align-items:center; justify-content:center; color:var(--teal); margin-bottom:6px; }

/* ---------- pricing tiles (advertise) ---------- */
.price-card{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius-m); padding:30px; display:flex; flex-direction:column; gap:14px; }
.price-card.featured{ border-color:var(--brass); box-shadow:0 12px 30px rgba(176,141,87,.18); position:relative; }
.price-card .amount{ font-family:'Source Serif 4',serif; font-size:2.1rem; color:var(--ink); }
.price-card ul li{ font-size:.88rem; color:var(--muted); padding:6px 0; border-top:1px dashed var(--line); }
.price-card ul li:first-child{ border-top:none; }

/* ---------- forms (contact) ---------- */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form-grid .full{ grid-column:1/-1; }
label{ display:block; font-size:.82rem; font-weight:600; margin-bottom:6px; color:var(--ink); }
input,select,textarea{
  width:100%; padding:12px 13px; border:1px solid var(--line); border-radius:var(--radius-s);
  font-family:'Inter',sans-serif; font-size:.92rem; background:#fff; color:var(--ink-text);
}
textarea{ resize:vertical; min-height:120px; }
@media (max-width:640px){ .form-grid{ grid-template-columns:1fr; } }

/* ---------- footer ---------- */
footer.site-footer{ background:var(--ink); color:#B9C0D1; padding:56px 0 0; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr 1.1fr; gap:32px; padding-bottom:40px; border-bottom:1px solid var(--line-dark); }
.footer-grid h5{ color:#fff; font-family:'Inter',sans-serif; font-size:.82rem; text-transform:uppercase; letter-spacing:.08em; margin-bottom:14px; }
.footer-grid li{ margin-bottom:9px; font-size:.88rem; }
.footer-grid a:hover{ color:var(--brass); }
.footer-logo{ font-family:'Source Serif 4',serif; font-size:1.4rem; color:#fff; margin-bottom:10px; }
.footer-bottom{ display:flex; justify-content:space-between; padding:20px 0; font-size:.8rem; flex-wrap:wrap; gap:10px; }
@media (max-width:900px){ .footer-grid{ grid-template-columns:1fr 1fr; } }

/* ---------- conferences directory (topic sidebar + month listing) ---------- */
.conf-layout{ display:grid; grid-template-columns:240px 1fr; gap:28px; align-items:start; }
@media (max-width:1000px){ .conf-layout{ grid-template-columns:1fr; } }

.conf-sidebar{ display:flex; flex-direction:column; gap:18px; position:sticky; top:96px; }

.topic-nav{ border:1px solid var(--line); border-radius:var(--radius-m); padding:6px; background:var(--card); }
.topic-nav .topic-nav-label{ font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; font-weight:700; color:var(--muted); padding:12px 14px 6px; }
.topic-nav button{
  display:block; width:100%; text-align:left; background:none; border:none; cursor:pointer;
  padding:10px 14px; font-size:.9rem; font-family:'Inter',sans-serif; color:var(--ink-text); border-radius:var(--radius-s);
}
.topic-nav button:hover{ background:var(--paper-2); }
.topic-nav button.active{ background:var(--ink); color:#fff; font-weight:600; }

.conf-toolbar{ display:flex; gap:12px; flex-wrap:wrap; align-items:center; justify-content:space-between; margin-bottom:26px; padding-bottom:18px; border-bottom:1px solid var(--line); }
.conf-toolbar .filters{ display:flex; gap:10px; flex-wrap:wrap; flex:1; min-width:0; }
.conf-toolbar select{ padding:9px 12px; font-size:.85rem; min-width:150px; }
.conf-toolbar .result-count{ font-size:.84rem; color:var(--muted); white-space:nowrap; }

.page-search{ position:relative; flex:1; min-width:220px; max-width:420px; }
.page-search input{ padding:10px 14px 10px 36px; font-size:.9rem; }
.page-search svg{ position:absolute; left:11px; top:50%; transform:translateY(-50%); color:var(--muted); pointer-events:none; }

.month-group{ margin-bottom:34px; }
.month-group h3{ font-size:1.15rem; padding-bottom:10px; border-bottom:2px solid var(--brass); margin-bottom:14px; }
.conf-list{ list-style:none; margin:0; padding:0; }
.conf-item{ border-bottom:1px dashed var(--line); }
.conf-item:last-child{ border-bottom:none; }
.conf-item a.conf-link{
  display:flex; gap:12px; align-items:baseline; padding:12px 6px; font-size:.94rem; color:var(--ink-text);
  border-radius:var(--radius-s);
}
.conf-item a.conf-link:hover{ background:var(--paper-2); color:var(--brass-dark); }
.conf-item .bullet{ color:var(--brass); flex:none; font-size:.9rem; }
.conf-item .conf-line b{ font-weight:600; color:var(--ink); }
.conf-item .conf-mode{ font-size:.78rem; color:var(--teal); font-weight:600; margin-left:6px; }
.conf-item .conf-idx{ font-size:.78rem; color:var(--muted); margin-left:6px; }
.no-results{ padding:28px; text-align:center; color:var(--muted); border:1px dashed var(--line); border-radius:var(--radius-m); display:none; }

.ad-banner{
  display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:0 0 30px;
}
@media (max-width:900px){ .ad-banner{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .ad-banner{ grid-template-columns:1fr; } }

/* ---------- conference promo banners (featured/paid conferences, poster-style) ---------- */
.conf-promo{
  position:relative; display:block; border-radius:var(--radius-m); overflow:hidden;
  color:#fff; padding:16px; display:flex; flex-direction:column; justify-content:space-between;
  isolation:isolate;
  aspect-ratio: 1.4142 / 1; /* A4 landscape proportion */
}
.conf-promo::before{
  content:''; position:absolute; inset:0; z-index:-1;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,.14), transparent 45%),
    radial-gradient(circle at 85% 90%, rgba(255,255,255,.10), transparent 40%),
    var(--promo-grad, linear-gradient(135deg, var(--ink), var(--teal)));
}
.conf-promo .promo-badge{
  align-self:flex-start; font-size:.62rem; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.35); padding:4px 9px; border-radius:20px;
}
.conf-promo .promo-tag{ position:absolute; top:12px; right:12px; font-size:.6rem; font-weight:700; letter-spacing:.06em; background:var(--brass); color:#fff; padding:3px 8px; border-radius:2px; }
.conf-promo h4{ color:#fff; font-size:1.02rem; margin:10px 0 8px; line-height:1.25; }
.conf-promo .promo-meta{ display:flex; flex-direction:column; gap:4px; font-size:.78rem; color:rgba(255,255,255,.9); }
.conf-promo .promo-meta span{ display:flex; align-items:center; gap:6px; }
.conf-promo:hover{ box-shadow:0 14px 28px rgba(22,35,63,.28); transform:translateY(-2px); transition:.15s ease; }

.conf-promo-tall{ aspect-ratio: 3 / 4; min-height:auto; }
.conf-promo-tall h4{ font-size:1.15rem; }

.promo-cell{ display:flex; }
.promo-cell .conf-promo{ flex:1; }

.promo-rail{ display:flex; flex-direction:column; gap:14px; }
.promo-rail-divider{ border:none; border-top:1px solid var(--line); margin:0; }
.conf-promo-image{ min-height:200px; }
.conf-promo-image::before{ content:none; } /* the decorative gradient scrim must not paint over a real uploaded image */

.info-panel{
  background:#EAF2F2; border:1px solid var(--teal); border-radius:var(--radius-m); padding:16px;
}
.info-panel .promo-badge{ background:var(--teal); color:#fff; border:none; }
.info-panel h4{ color:var(--teal); font-size:.95rem; margin:8px 0 4px; }
.info-panel p{ font-size:.82rem; color:var(--ink-text); margin:0; }

/* ---------- mode quick-filter row ---------- */
.mode-filter-row{ display:flex; gap:8px; flex-wrap:wrap; }
.mode-btn{
  background:var(--ink); color:#fff; border:none; cursor:pointer;
  padding:11px 20px; font-size:.86rem; font-weight:600; font-family:'Inter',sans-serif;
  border-radius:var(--radius-s);
}
.mode-btn:hover{ background:var(--ink-2); }
.mode-btn.active{ background:var(--brass); }

/* ---------- suggested topic chips (under search) ---------- */
.topic-suggest{ display:flex; flex-wrap:wrap; gap:8px; margin:12px 0 0; }
.topic-suggest button{
  background:var(--paper-2); border:1px solid var(--line); color:var(--ink-text);
  font-size:.78rem; padding:6px 12px; border-radius:20px; cursor:pointer; font-family:'Inter',sans-serif;
}
.topic-suggest button:hover{ border-color:var(--brass); color:var(--brass-dark); }
.topic-suggest .label{ font-size:.72rem; color:var(--muted); align-self:center; margin-right:2px; }

/* ---------- expertise checkbox grid (Expert Network) — plain, aligned columns ---------- */
.expertise-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:16px 20px;
  margin:14px 0 0;
}
@media (max-width:900px){ .expertise-grid{ grid-template-columns:repeat(2, 1fr); } }
@media (max-width:560px){ .expertise-grid{ grid-template-columns:1fr; } }
.expertise-chip{
  display:flex; align-items:center; gap:10px;
  background:none; border:none; padding:0;
  font-size:.92rem; font-weight:700; color:var(--ink);
  cursor:pointer; user-select:none; line-height:1.3;
}
.expertise-chip input[type=checkbox]{
  width:18px; height:18px; flex:none; margin:0; accent-color:var(--brass); cursor:pointer;
}
.expertise-chip.checked{ color:var(--brass-dark); }
.expertise-custom-row{ display:flex; gap:8px; margin-top:14px; max-width:420px; }
.expertise-custom-row input{ flex:1; }
.expertise-custom-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:12px; }
.expertise-custom-tag{
  display:inline-flex; align-items:center; gap:8px;
  background:#FBF7EF; border:1px solid var(--brass); color:var(--ink-text);
  border-radius:20px; padding:6px 8px 6px 12px; font-size:.83rem;
}
.expertise-custom-tag button{
  background:var(--brass); color:#fff; border:none; border-radius:50%;
  width:18px; height:18px; line-height:1; cursor:pointer; font-size:.75rem; flex:none;
}

/* ---------- detail page ---------- */
.detail-head{ padding:44px 0 34px; border-bottom:1px solid var(--line); }
.detail-badges{ display:flex; gap:8px; margin-bottom:14px; flex-wrap:wrap; }
.detail-grid{ display:grid; grid-template-columns:2fr 1fr; gap:40px; }
@media (max-width:900px){ .detail-grid{ grid-template-columns:1fr; } }
.detail-meta-table{ width:100%; border-collapse:collapse; margin:22px 0; }
.detail-meta-table tr{ border-bottom:1px solid var(--line); }
.detail-meta-table td{ padding:12px 4px; font-size:.92rem; }
.detail-meta-table td:first-child{ color:var(--muted); width:38%; font-weight:500; }
.detail-meta-table td:last-child{ color:var(--ink-text); font-weight:600; }
.not-found{ padding:80px 0; text-align:center; }

/* ---------- journal tiles ---------- */
.journal-tile{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-m); overflow:hidden;
  display:flex; flex-direction:column;
}
.journal-tile .journal-band{
  height:64px; background:linear-gradient(135deg, var(--ink), var(--teal));
  display:flex; align-items:center; padding:0 16px; color:#fff;
}
.journal-tile .journal-band svg{ flex:none; margin-right:10px; opacity:.85; }
.journal-tile .journal-quartile{ font-size:.66rem; font-weight:700; letter-spacing:.06em; background:rgba(255,255,255,.18); padding:2px 8px; border-radius:20px; margin-left:auto; }
.journal-tile .journal-body{ padding:16px 18px; display:flex; flex-direction:column; gap:6px; flex:1; }
.journal-tile h4{ font-size:.98rem; margin:0; line-height:1.3; }
.journal-tile .journal-meta{ font-size:.78rem; color:var(--muted); }
.journal-tile .journal-tag{ font-size:.7rem; font-weight:700; letter-spacing:.05em; text-transform:uppercase; color:var(--teal); }

/* ---------- expert network role tiles ---------- */
.role-tile{
  position:relative; display:flex; flex-direction:column; gap:8px;
  border:2px solid var(--line); border-radius:var(--radius-m); padding:20px;
  cursor:pointer; background:var(--card);
}
.role-tile input[type=checkbox]{ position:absolute; top:16px; right:16px; width:18px; height:18px; accent-color:var(--brass); cursor:pointer; }
.role-tile .mark{ width:38px; height:38px; border-radius:50%; background:var(--paper-2); border:1px solid var(--line); display:flex; align-items:center; justify-content:center; color:var(--teal); }
.role-tile h4{ font-size:1rem; margin:2px 0 0; }
.role-tile p{ font-size:.84rem; color:var(--muted); margin:0; }
.role-tile.selected{ border-color:var(--brass); background:#FBF7EF; }
.role-tile.selected .mark{ background:var(--brass); border-color:var(--brass); color:#fff; }

.conditional-block{ display:none; border-top:1px dashed var(--line); margin-top:18px; padding-top:18px; }
.conditional-block.visible{ display:block; }
.conditional-block h4{ font-size:.92rem; margin-bottom:12px; color:var(--ink); }

/* ---------- generic page search (jobs, publications, projects, awards, blog, resources) ---------- */
.search-row{ display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap; margin-bottom:26px; }
.search-row .page-search{ max-width:460px; flex:1; }
.search-row .result-count{ font-size:.84rem; color:var(--muted); white-space:nowrap; }

/* ---------- page header (inner pages) ---------- */
.page-head{ padding:46px 0 40px; border-bottom:1px solid var(--line); background:var(--paper-2); }
.breadcrumb{ font-size:.8rem; color:var(--muted); margin-bottom:12px; }
.breadcrumb a:hover{ color:var(--brass-dark); }
.page-head h1{ font-size:clamp(1.8rem,3.4vw,2.5rem); margin-bottom:8px; }
.page-head p{ color:var(--muted); max-width:60ch; margin:0; }

/* ---------- misc ---------- */
.two-col{ display:grid; grid-template-columns:2fr 1fr; gap:40px; }
@media (max-width:900px){ .two-col{ grid-template-columns:1fr; } }
.sidebar-box{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius-m); padding:22px; margin-bottom:20px; }
.sidebar-box h4{ font-size:1rem; margin-bottom:12px; }
.sidebar-box li{ padding:8px 0; border-top:1px dashed var(--line); font-size:.86rem; }
.sidebar-box li:first-child{ border-top:none; }