/* ==========================================================================
   SCIENTRA — The Global Research Platform
   Single stylesheet for every page. Edit colours/type in :root only.
   ========================================================================== */

:root{
  /* Palette — restrained institutional navy on a cool paper ground */
  --navy-900:#0c2340;
  --navy-800:#14375e;
  --navy-600:#2b5486;
  --ink:#16202b;
  --body:#333e4c;
  --muted:#65717f;
  --rule:#d9dee4;
  --rule-soft:#e8ebef;
  --paper:#ffffff;
  --canvas:#f4f6f8;
  --canvas-2:#eceff3;
  --seal:#5b6572;          /* neutral accent — used for buttons/rules instead of red */
  --ok:#1f6b45;
  --ok-bg:#e8f3ed;
  --warn:#8a5a11;
  --warn-bg:#fbf1de;
  --bad:#96271f;
  --bad-bg:#fbeceb;

  --shell:1160px;
  --gap:24px;

  --serif:"Source Serif 4","Source Serif Pro",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans","Segoe UI",system-ui,-apple-system,Arial,sans-serif;
}

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

html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--canvas);
  color:var(--body);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.6;
  font-feature-settings:"kern" 1;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0 0 .5em;font-weight:600;line-height:1.25}
h1{font-size:30px;letter-spacing:-.01em}
h2{font-size:21px}
h3{font-size:17px}
p{margin:0 0 1em}
a{color:var(--navy-800);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--navy-600);outline-offset:2px}
img{max-width:100%}
hr{border:0;border-top:1px solid var(--rule);margin:28px 0}

.shell{max-width:var(--shell);margin:0 auto;padding:0 24px}
.stack>*+*{margin-top:14px}
.muted{color:var(--muted)}
.small{font-size:13px}
.nowrap{white-space:nowrap}
.hidden{display:none !important}
.center{text-align:center}
.mono-num{font-variant-numeric:tabular-nums}

/* ---------- Masthead ---------------------------------------------------- */
.masthead{background:var(--paper);border-bottom:1px solid var(--rule)}
.masthead-top{display:flex;align-items:center;gap:28px;padding:14px 0}
.wordmark{display:flex;align-items:center;text-decoration:none}
.wordmark:hover{text-decoration:none}
.wordmark img{height:96px;width:auto;display:block}
.masthead nav{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:14px}
.masthead nav a{color:var(--body)}
.masthead nav a:hover{color:var(--navy-800)}
.masthead nav a.active{color:var(--navy-900);font-weight:600}
.navbar-search{margin-left:auto;flex:1;max-width:360px}
.navbar-search form{display:flex}
.navbar-search input{
  flex:1;min-width:0;border:1px solid var(--rule);border-right:0;background:var(--canvas);
  padding:7px 11px;font:inherit;font-size:13.5px;color:var(--ink)
}
.navbar-search button{
  border:1px solid var(--navy-800);background:var(--navy-800);color:#fff;
  padding:0 12px;font:inherit;font-size:13px;cursor:pointer
}
.avatar{
  width:30px;height:30px;border-radius:50%;background:var(--navy-800);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:600
}
.user-chip{display:flex;align-items:center;gap:9px}

/* secondary rail of categories */
.cat-dropdown{position:relative}
.cat-dropdown summary{
  list-style:none;cursor:pointer;color:var(--body);user-select:none;
  display:flex;align-items:center;gap:5px
}
.cat-dropdown summary::-webkit-details-marker{display:none}
.cat-dropdown summary::after{content:"▾";font-size:10px;color:var(--muted)}
.cat-dropdown summary:hover{color:var(--navy-800)}
.cat-dropdown[open] summary::after{content:"▴"}
.cat-panel{
  position:absolute;top:calc(100% + 12px);right:0;background:#fff;border:1px solid var(--rule);
  box-shadow:0 8px 24px rgba(20,30,45,.12);min-width:260px;padding:8px 0;z-index:60
}
.cat-panel a{display:block;padding:8px 18px;font-size:13.5px;color:var(--body)}
.cat-panel a:hover{background:var(--canvas);color:var(--navy-800);text-decoration:none}
@media (max-width:700px){
  .cat-panel{position:fixed;left:16px;right:16px;top:auto;min-width:0}
}

/* ---------- Hero -------------------------------------------------------- */
.hero{
  background:var(--navy-900);
  background-image:linear-gradient(180deg,#0c2340 0%,#102c4e 100%);
  color:#e9eef4;padding:52px 0 0
}
.hero h1{color:#fff;font-size:36px;max-width:19ch;margin-bottom:10px}
.hero .lede{color:#b9c8d9;font-size:16px;max-width:56ch;margin-bottom:26px}
.hero-search{display:flex;max-width:660px;background:#fff;border:1px solid #fff}
.hero-search input{
  flex:1;min-width:0;border:0;padding:14px 16px;font:inherit;font-size:15px;color:var(--ink)
}
.hero-search input:focus{outline:none}
.hero-search button{
  border:0;background:var(--seal);color:#fff;padding:0 24px;font:inherit;font-size:14px;
  font-weight:600;cursor:pointer;letter-spacing:.01em
}
.hero-search button:hover{background:#454e59}
.hero-hint{margin-top:12px;font-size:13px;color:#93a7bd}
.hero-hint a{color:#cddbea;text-decoration:underline}

.counters{display:flex;gap:0;margin-top:38px;border-top:1px solid #24466e}
.counters div{padding:16px 34px 18px;border-right:1px solid #24466e}
.counters div:last-child{border-right:0}
.counters div:first-child{padding-left:0}
.counters b{
  display:block;font-family:var(--serif);font-size:26px;color:#fff;font-weight:600;
  font-variant-numeric:tabular-nums;line-height:1.1
}
.counters span{font-size:12px;color:#93a7bd}

/* ---------- Layout ------------------------------------------------------ */
main{padding:32px 0 64px}
.cols{display:grid;grid-template-columns:1fr 296px;gap:40px;align-items:start}
.section-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  border-bottom:2px solid var(--navy-900);padding-bottom:7px;margin-bottom:4px
}
.section-head h2{margin:0}
.section-head a{font-size:13px}

/* ---------- Paper list -------------------------------------------------- */
.paper-list{list-style:none;margin:0;padding:0}
.paper-list>li{padding:20px 0;border-bottom:1px solid var(--rule)}
.paper-item h3{font-size:18px;margin:0 0 5px;line-height:1.32}
.paper-item h3 a{color:var(--navy-900)}
.paper-authors{font-size:13.5px;color:var(--body);margin:0 0 6px}
.paper-authors a{color:var(--body)}
.paper-meta{font-size:12.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:14px;margin-top:8px}
.paper-abstract{font-size:14px;color:var(--body);margin:0;max-width:78ch}
.paper-abstract.clamp{
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden
}
.tag{
  display:inline-block;font-size:11.5px;color:var(--navy-800);background:var(--canvas-2);
  border:1px solid var(--rule);padding:2px 8px;margin:0 6px 6px 0
}
a.tag:hover{background:#e2e7ee;text-decoration:none}

/* ---------- Cards / panels --------------------------------------------- */
.panel{background:var(--paper);border:1px solid var(--rule);padding:24px}
.panel+.panel{margin-top:20px}
.panel-tight{padding:18px}
.panel h2:first-child,.panel h3:first-child{margin-top:0}

.side-box{background:var(--paper);border:1px solid var(--rule);margin-bottom:20px}
.side-box h3{
  margin:0;padding:12px 16px;font-size:14px;font-family:var(--sans);font-weight:600;
  color:var(--ink);border-bottom:1px solid var(--rule);background:var(--canvas)
}
.side-list{list-style:none;margin:0;padding:6px 0}
.side-list li a{
  display:flex;justify-content:space-between;gap:10px;padding:7px 16px;font-size:13.5px;color:var(--body)
}
.side-list li a:hover{background:var(--canvas);text-decoration:none;color:var(--navy-800)}
.side-list .count{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
.side-box p{padding:14px 16px;margin:0;font-size:13.5px;color:var(--muted)}
.cite-box p{color:var(--body);font-size:12.5px;line-height:1.55;overflow-wrap:anywhere;word-break:break-word}
.cite-box a{word-break:break-all}

/* ---------- Buttons / forms -------------------------------------------- */
.btn{
  display:inline-block;border:1px solid var(--navy-800);background:var(--navy-800);color:#fff;
  padding:9px 18px;font:inherit;font-size:14px;cursor:pointer;text-align:center
}
.btn:hover{background:var(--navy-900);border-color:var(--navy-900);text-decoration:none;color:#fff}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-ghost{background:transparent;color:var(--navy-800)}
.btn-ghost:hover{background:var(--canvas-2);color:var(--navy-900)}
.btn-approve{background:var(--ok);border-color:var(--ok)}
.btn-approve:hover{background:#175434;border-color:#175434}
.btn-reject{background:transparent;color:var(--bad);border-color:#d6b3af}
.btn-reject:hover{background:var(--bad-bg);color:var(--bad)}
.btn-block{display:block;width:100%}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.field{margin-bottom:18px}
.field label,.field>span.lbl{
  display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:5px
}
.field .help{font-size:12.5px;color:var(--muted);margin:5px 0 0}
input[type=text],input[type=email],input[type=password],input[type=date],input[type=url],
input[type=search],textarea,select{
  width:100%;border:1px solid var(--rule);background:#fff;padding:9px 11px;
  font:inherit;font-size:14px;color:var(--ink);border-radius:0
}
textarea{line-height:1.55;resize:vertical}
input:focus,textarea:focus,select:focus{border-color:var(--navy-600);outline:2px solid #cfdcea;outline-offset:0}
input[type=file]{font-size:13.5px}
.req{color:var(--seal)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.author-row{display:flex;gap:10px;margin-bottom:10px}
.author-row input{flex:1}
.author-row button{
  border:1px solid var(--rule);background:#fff;color:var(--muted);cursor:pointer;
  padding:0 12px;font:inherit
}
.author-row button:hover{color:var(--bad);border-color:#d6b3af}

.divider-or{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:12.5px;margin:20px 0}
.divider-or::before,.divider-or::after{content:"";flex:1;height:1px;background:var(--rule)}
.btn-oauth{
  display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
  border:1px solid var(--rule);background:#fff;color:var(--ink);padding:10px;
  font:inherit;font-size:14px;cursor:pointer;margin-bottom:10px
}
.btn-oauth:hover{background:var(--canvas);text-decoration:none;color:var(--ink)}
.btn-oauth svg{width:18px;height:18px;flex:none}

.notice{padding:11px 14px;font-size:13.5px;border:1px solid;margin-bottom:18px}
.notice-error{background:var(--bad-bg);border-color:#e6c4c0;color:var(--bad)}
.notice-ok{background:var(--ok-bg);border-color:#c2ddce;color:var(--ok)}
.notice-info{background:#eef2f7;border-color:#d2dce7;color:var(--navy-800)}

.status{display:inline-block;font-size:11.5px;padding:2px 9px;border:1px solid;font-weight:600}
.status-pending{background:var(--warn-bg);border-color:#e6d3ab;color:var(--warn)}
.status-approved{background:var(--ok-bg);border-color:#c2ddce;color:var(--ok)}
.status-rejected{background:var(--bad-bg);border-color:#e6c4c0;color:var(--bad)}

/* ---------- Narrow pages (login, submit) -------------------------------- */
.narrow{max-width:460px;margin:0 auto}
.mid{max-width:760px;margin:0 auto}
.page-head{margin-bottom:24px}
.page-head h1{margin-bottom:6px}
.page-head p{color:var(--muted);margin:0;max-width:70ch}

/* ---------- Paper detail page ------------------------------------------ */
.breadcrumb{font-size:12.5px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.paper-head h1{font-size:29px;line-height:1.24;max-width:34ch;margin-bottom:12px}
.paper-head .authors{font-size:15px;color:var(--ink);margin-bottom:6px}
.paper-head .pub-line{font-size:13px;color:var(--muted);margin:0}
.paper-body h2{
  font-size:14px;font-family:var(--sans);font-weight:600;letter-spacing:.01em;
  border-bottom:1px solid var(--rule);padding-bottom:6px;margin:30px 0 12px
}
.paper-body .abstract-text{font-size:15.5px;line-height:1.72;max-width:74ch;white-space:pre-wrap}
.references{padding-left:22px;margin:0;font-size:13.5px;line-height:1.6}
.references li{margin-bottom:9px;max-width:84ch}
.download-box{background:var(--paper);border:1px solid var(--rule);padding:18px;margin-bottom:20px}
.download-box .btn{width:100%}

/* ---------- Figures panel ------------------------------------------------ */
.figures-panel{margin-bottom:10px}
.figures-panel summary{cursor:pointer;color:var(--navy-800);font-size:13.5px;font-weight:600;padding:4px 0}
.figures-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-top:14px
}
.figures-grid figure{margin:0;border:1px solid var(--rule);background:#fff;padding:8px}
.figures-grid img{width:100%;height:130px;object-fit:contain;display:block;background:var(--canvas)}
.figures-grid figcaption{font-size:12px;color:var(--body);margin-top:8px;line-height:1.4}
.kv{list-style:none;margin:0;padding:0;font-size:13px}
.kv li{display:flex;gap:10px;padding:7px 0;border-bottom:1px solid var(--rule-soft)}
.kv li:last-child{border-bottom:0}
.kv b{flex:none;width:96px;color:var(--muted);font-weight:400}
.kv span{color:var(--ink);word-break:break-word}

/* ---------- Tables (admin) --------------------------------------------- */
.rows{width:100%;border-collapse:collapse;font-size:13.5px}
.rows th{
  text-align:left;font-size:12.5px;color:var(--muted);font-weight:600;
  border-bottom:1px solid var(--rule);padding:0 12px 8px 0
}
.rows td{padding:12px 12px 12px 0;border-bottom:1px solid var(--rule-soft);vertical-align:top}

/* ---------- States ------------------------------------------------------ */
.empty{
  background:var(--paper);border:1px dashed var(--rule);padding:36px 24px;text-align:center;color:var(--muted)
}
.empty h3{color:var(--ink);margin-bottom:6px}
.skeleton{height:14px;background:var(--canvas-2);margin:10px 0;max-width:520px}
.pager{display:flex;gap:10px;justify-content:center;margin-top:28px}

/* ---------- Footer ------------------------------------------------------ */
footer{background:var(--navy-900);color:#a8bacd;margin-top:0;padding:38px 0 30px;font-size:13px}
footer .cols-f{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
footer h4{color:#fff;font-family:var(--sans);font-size:13px;margin:0 0 10px}
footer a{color:#a8bacd;display:block;padding:3px 0}
footer a:hover{color:#fff}
footer .fine{
  border-top:1px solid #24466e;margin-top:28px;padding-top:16px;font-size:12px;color:#7f93a9;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap
}
footer .brand-f{margin-bottom:10px;display:block}
footer .brand-f img{height:52px;width:auto;display:block;filter:brightness(0) invert(1)}

@media (max-width:900px){
  .cols{grid-template-columns:1fr;gap:28px}
  .masthead-top{flex-wrap:wrap;gap:14px}
  .navbar-search{order:3;max-width:none;flex-basis:100%;margin-left:0}
  .masthead nav{gap:16px;font-size:13.5px}
  .hero h1{font-size:28px}
  .counters{flex-wrap:wrap}
  .counters div{padding:14px 22px 16px}
  .grid-2{grid-template-columns:1fr}
  footer .cols-f{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .hero{padding-top:34px}
  .hero-search button{padding:0 16px}
  .paper-head h1{font-size:24px}
  h1{font-size:25px}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}

@media print{
  .masthead,.subnav,footer,.download-box,.hero{display:none}
  body{background:#fff}
}


/* ---------- Cookie notice ------------------------------------------------ */
.cookie-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:500;background:var(--navy-900);color:#dbe4ee;
  padding:16px 20px;display:flex;gap:20px;align-items:center;flex-wrap:wrap;
  box-shadow:0 -2px 12px rgba(0,0,0,.18)
}
.cookie-bar p{margin:0;font-size:13px;flex:1;min-width:220px;color:#c8d5e4}
.cookie-bar .btn{white-space:nowrap}
@media (max-width:560px){ .cookie-bar{flex-direction:column;align-items:stretch;text-align:left} }