/* ===========================================================
   ТОКЕНЫ (глобальные — общие со всеми страницами)
   =========================================================== */
:root{
  --bg:#f5f6f8;--card:#ffffff;--ink:#16181d;--ink-2:#3b4250;--muted:#6b7280;
  --line:#e8eaf0;--line-soft:#eef0f4;
  --accent:#2f3a8f;--accent-600:#27306f;--accent-tint:#eef0fb;--accent-tint-2:#e3e6f7;
  --brand:#1b1f3a;            /* тёмно-синяя плашка под белый логотип */
  --radius-lg:18px;--radius-md:12px;--radius-sm:9px;
  --shadow-sm:0 1px 2px rgba(22,24,29,.04),0 1px 3px rgba(22,24,29,.05);
  --shadow-nav:0 4px 18px rgba(22,24,29,.08);
  --serif:'Lora',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ===========================================================
   ШАПКА
   =========================================================== */
.site-header{background:var(--card)}

/* — тёмная брендовая плашка: логотип + ISSN/DOI + язык + поиск — */
.brandbar{background:#9a2b32;color:#cdd2e6}
.brandbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0}
.logo{flex:none;display:inline-flex;align-items:center;line-height:0}
.logo img{height:90px;width:auto;max-width:100%;display:block}
.brand-fallback{display:none;flex-direction:column;line-height:1.2}
.brand-fallback .bf-ru{font-family:var(--serif);font-weight:600;font-size:22px;color:#fff}
.brand-fallback .bf-en{font-family:var(--serif);font-style:italic;font-size:14px;color:#9aa1cd;margin-top:2px}

.brandbar-tools{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
.bt-meta{font-size:12.5px;color:#fff;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.bt-meta b{color:#fff;font-weight:600}
.bt-meta .dot{opacity:.45}
.lang{display:inline-flex;background:rgba(255,255,255,.12);border-radius:999px;padding:3px;gap:2px}
.lang a{font-family:var(--sans);font-size:12px;font-weight:600;color:#fff;background:transparent;border:0;padding:4px 12px;border-radius:999px;cursor:pointer;transition:background .15s ease,color .15s ease;text-decoration:none;display:inline-flex;align-items:center;line-height:1}
.lang a[aria-pressed="true"]{background:#fff;color:var(--brand)}
.search-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:32px;border-radius:var(--radius-sm);background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#dfe2f4;cursor:pointer;transition:background .15s ease;padding:1px 6px;}
.search-btn:hover{background:rgba(255,255,255,.2)}

/* — строка поиска (выезжает) — */
.searchbar{display:none;background:var(--card);border-bottom:1px solid var(--line)}
.searchbar.open{display:block}
.searchbar .wrap{display:flex;align-items:center;gap:10px;padding:14px 0}
.searchbar .field{flex:1;display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 14px}
.searchbar .field svg{color:var(--muted);flex:none}
.searchbar input{flex:1;border:0;background:transparent;font-family:var(--sans);font-size:15px;color:var(--ink);padding:12px 0;outline:none}
.searchbar .go{font-family:var(--sans);font-size:14px;font-weight:600;color:#fff;background:var(--accent);border:0;border-radius:var(--radius-sm);padding:11px 20px;cursor:pointer}
.searchbar .go:hover{background:var(--accent-600)}
.searchbar .close{background:transparent;border:0;color:var(--muted);cursor:pointer;width:38px;height:38px;border-radius:var(--radius-sm)}
.searchbar .close:hover{background:var(--bg);color:var(--ink)}

/* — индексация и регистрация — */
.creds{border-bottom:1px solid var(--line-soft);background:var(--bg)}
.creds .wrap{display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;padding-top:11px;padding-bottom:11px;justify-content: space-between;}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--accent-600);background:var(--accent-tint);border:1px solid var(--accent-tint-2);padding:5px 11px;border-radius:999px}
a.chip:hover{text-decoration:none;background:var(--accent-tint-2)}
.chip .ic{width:13px;height:13px}
.reg{font-size:12px;color:var(--muted);line-height:1.4;flex:1;min-width:240px;     margin-bottom: 0;
    text-align: right;
    max-width: 530px;}

/* — навигация (sticky) — */
.navbar{position:sticky;top:0;z-index:40;background:var(--card);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.navbar.scrolled{box-shadow:var(--shadow-nav)}
.navbar .wrap{display:flex;align-items:center;gap:14px;min-height:54px}
.nav-brand{display:none}
.nav-brand img{display:block;height:28px;width:auto;border-radius:6px}
.nav-menu{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:2px;flex:1}
@media (max-width:860px){
  .nav-brand{display:inline-flex;align-items:center}
}
.nav-menu > li{position:relative}
.nav-menu > li > a,.nav-menu > li > button{
  font-family:var(--sans);font-size:14.5px;font-weight:500;color:var(--ink-2);
  display:inline-flex;align-items:center;gap:6px;padding:11px 14px;border-radius:var(--radius-sm);
  background:transparent;border:0;cursor:pointer;transition:background .15s ease,color .15s ease;
}
.nav-menu > li > a:hover,.nav-menu > li > button:hover{background:var(--bg);color:var(--ink);text-decoration:none}
.nav-menu > li > a.is-active{color:var(--accent);font-weight:600;background:var(--accent-tint)}
.nav-menu .chev{transition:transform .2s ease}
.has-sub.is-open > a .chev{transform:rotate(180deg)}

.submenu{
  list-style:none;margin:0;padding:8px;min-width:300px;
  position:absolute;top:calc(100% + 6px);left:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-nav);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .15s ease,transform .15s ease,visibility .15s;z-index:50;
}
.has-sub:hover .submenu,.has-sub.is-open .submenu{opacity:1;visibility:visible;transform:none}
.submenu a{display:block;padding:9px 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--ink-2)}
.submenu a:hover{background:var(--bg);color:var(--ink);text-decoration:none}

.nav-toggle{display:none;margin-left:auto;background:transparent;border:1px solid var(--line);border-radius:var(--radius-sm);width:42px;height:38px;cursor:pointer;align-items:center;justify-content:center;color:var(--ink)}

/* ===========================================================
   ПОДВАЛ
   =========================================================== */
.site-footer{background:var(--brand);color:#c2c8e4}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:40px;padding:48px 0 40px}
.footer-col h3{font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#8e96c4;margin:0 0 16px}
.f-brand-ru{font-family:var(--serif);font-weight:600;font-size:19px;color:#fff;line-height:1.3;margin:0 0 4px}
.f-brand-en{font-family:var(--serif);font-style:italic;font-size:14px;color:#9aa1cd;margin:0 0 16px}
.f-meta{font-size:13px;line-height:1.7;color:#aab1d8}
.f-meta b{color:#fff;font-weight:600}
.f-meta a{color:#aab1d8;text-decoration:underline;text-underline-offset:2px}
.f-meta a:hover{color:#fff}
.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-nav a{font-size:14px;color:#c2c8e4}
.footer-nav a:hover{color:#fff;text-decoration:none}
.f-contact{font-size:14px;line-height:1.7;color:#c2c8e4;font-style:normal}
.f-contact .row{display:flex;gap:10px;margin-bottom:10px}
.f-contact .ic{flex:none;color:#8e96c4;margin-top:3px}
.f-contact a{color:#c2c8e4}
.f-contact a:hover{color:#fff}

.footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom .row-in{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:18px 0;font-size:13px;color:#9aa1cd}
.footer-bottom a{color:#c2c8e4}
.footer-bottom a:hover{color:#fff}
.to-top{display:inline-flex;align-items:center;gap:7px;font-weight:600;color:#c2c8e4}
.to-top:hover{color:#fff;text-decoration:none}

/* ===========================================================
   АДАПТИВ
   =========================================================== */
@media (max-width:860px){
  .brandbar .wrap{flex-direction:column;align-items:flex-start;gap:14px}
  .brandbar-tools{width:100%;justify-content:space-between}
  .logo img{height:50px}
  .nav-brand{display:block}
  .nav-toggle{display:inline-flex;padding: 0px 0 3px 0;}
  .nav-menu{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow-nav);padding:10px 14px 16px;display:none}
  .navbar.nav-open .nav-menu{display:flex}
  .nav-menu > li > a,.nav-menu > li > button{width:100%;justify-content:space-between;padding:12px 12px}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;border-left:2px solid var(--line);border-radius:0;margin:2px 0 4px 12px;padding:2px 0;min-width:0;display:none}
  .has-sub.is-open .submenu{display:block}
  .footer-top{grid-template-columns:1fr;gap:30px;padding:36px 0 30px}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .searchbar .go{padding:11px 14px}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important;scroll-behavior:auto}}
@media(max-width:1190px) {
  .brandbar .wrap {
    padding-inline: 10px;
}
}
.nav-toggle-bars{
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  width:20px;
  height:14px;
}
.nav-toggle-bars span{
  display:block;
  width:100%;
  height:2px;
  background:var(--ink);
  border-radius:2px;
}
.brandbar-logos{display:flex;align-items:center;gap:20px}
.publisher-logo{flex:none;display:inline-flex;align-items:center;line-height:0}
.publisher-logo img{height:90px;width:auto;max-width:100%;display:block}

@media (max-width:640px){
  .publisher-logo img{height:50px}
  .brandbar-logos {
    display: flex;
    align-items: center;
    gap: 10px;
}
}