/* c1 — шапка, навігація, drawer, футер, банер */

/* ---- announcement banner ---- */
.banner{
  background:linear-gradient(90deg,var(--blue-deep),var(--blue));
  color:#fff;font-size:14.5px;
}
.banner-inner{display:flex;align-items:center;gap:14px;padding:10px 24px;max-width:var(--container);margin:0 auto}
.banner-inner strong{color:var(--ochre)}
.banner-inner a{text-decoration:underline;text-underline-offset:3px}
.banner-close{margin-left:auto;flex:0 0 auto;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:8px;opacity:.8}
.banner-close:hover{background:rgba(255,255,255,.15);opacity:1}
.banner[hidden]{display:none}

/* ---- header ---- */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(247,248,250,.86);backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;transition:box-shadow .3s var(--ease-out),border-color .3s;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(20,30,60,.08);border-color:var(--line)}
.site-header .container{display:flex;align-items:center;gap:28px;height:var(--header-h);transition:height .3s var(--ease-out)}
.site-header.is-scrolled .container{height:var(--header-h-shrunk)}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand img{height:44px;width:auto;transition:height .3s var(--ease-out)}
.site-header.is-scrolled .brand img{height:36px}
.brand-text{font-family:var(--ff-head);font-weight:700;font-size:15px;line-height:1.2;color:var(--blue-deep)}
.brand-text small{display:block;font-family:var(--ff-body);font-weight:500;font-size:11.5px;color:var(--ink-faint);letter-spacing:.02em}

.main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto}
.main-nav>ul{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;padding:11px 13px;border-radius:9px;font:600 14px/1.2 var(--ff-body);color:var(--ink);white-space:nowrap;transition:background .2s,color .2s}
.nav-link:hover,.nav-link[aria-expanded="true"]{background:var(--bg-alt);color:var(--blue)}
.nav-link .chev{transition:transform .2s var(--ease-out)}
.nav-item.open .nav-link .chev{transform:rotate(180deg)}
.nav-link.disabled{opacity:.55}

.dropdown{
  position:absolute;top:calc(100% + 10px);left:0;min-width:300px;background:#fff;border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);border:1px solid var(--line);padding:10px;opacity:0;visibility:hidden;
  transform:translateY(-8px) scale(.98);transition:opacity .2s var(--ease-out),transform .2s var(--ease-out),visibility .2s;
  max-height:70vh;overflow:auto;
}
.nav-item.open .dropdown{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.dropdown a,.dropdown .drop-label{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--ink)}
.dropdown a:hover{background:var(--bg-alt);color:var(--blue)}
.dropdown .sub{margin-left:10px;border-left:2px solid var(--line);padding-left:6px}
.dropdown small{display:block;font-weight:400;color:var(--ink-faint);font-size:11.5px;margin-top:1px}
.dropdown .years{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:6px 8px}
.dropdown .years a{justify-content:center;padding:8px 4px;background:var(--bg-alt);font-size:12.5px}
.dropdown .years a:hover{background:var(--blue);color:#fff}

.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.icon-btn{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);transition:background .2s,color .2s}
.icon-btn:hover{background:var(--bg-alt);color:var(--blue)}
.search-trigger{display:flex;align-items:center;gap:8px;padding:9px 12px 9px 14px;border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--ink-faint);font-size:13px}
.search-trigger kbd{font:600 11px/1 var(--ff-body);background:var(--bg-alt);border:1px solid var(--line);border-radius:5px;padding:3px 6px;color:var(--ink-soft)}
.search-trigger:hover{border-color:var(--blue);color:var(--blue)}
.burger{display:none}

/* ---- mobile drawer nav ---- */
.nav-scrim{position:fixed;inset:0;background:rgba(10,16,35,.5);backdrop-filter:blur(2px);opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:95}
.nav-scrim.active{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,86vw);background:#fff;z-index:96;
  transform:translateX(100%);visibility:hidden;transition:transform .35s var(--ease-out),visibility .35s;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);
}
.mobile-drawer.active{transform:translateX(0);visibility:visible}
.mobile-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.mobile-drawer-body{flex:1;overflow-y:auto;padding:12px 12px 28px}
.mobile-drawer .m-link{display:flex;align-items:center;justify-content:space-between;padding:14px 12px;border-radius:10px;font:600 15px var(--ff-body);border-bottom:1px solid var(--bg-alt)}
.mobile-drawer .m-link:hover{background:var(--bg-alt)}
.mobile-drawer .m-sub{display:none;padding-left:14px;border-left:2px solid var(--line);margin:2px 0 8px 12px}
.mobile-drawer .m-sub.open{display:block}
.mobile-drawer .m-sub a{display:block;padding:9px 10px;font-size:13.5px;color:var(--ink-soft);border-radius:8px}
.mobile-drawer .m-sub a:hover{background:var(--bg-alt);color:var(--blue)}
.mobile-drawer-foot{padding:16px 20px 22px;border-top:1px solid var(--line)}

@media (max-width:1080px){
  .main-nav{display:none}
  .burger{display:flex}
}
@media (max-width:1360px){
  .search-trigger .kbd-wrap{display:none}
}
@media (max-width:860px){
  .site-header .container{gap:10px}
  .brand-text small{display:none}
  .header-actions .btn{display:none}
}
@media (max-width:340px){
  .brand-text{display:none}
}

/* ---- footer ---- */
.site-footer{background:var(--blue-deep);color:#dbe6f5;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.14)}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-grid h4{color:#fff;font-size:14.5px;letter-spacing:.02em;text-transform:uppercase;margin-bottom:18px}
.footer-brand img{height:40px;margin-bottom:14px}
.footer-brand p{color:#aec2e3;font-size:14px;max-width:320px}
.footer-grid ul li{margin-bottom:10px}
.footer-grid a{font-size:14px;color:#cddcf1;transition:color .2s}
.footer-grid a:hover{color:var(--ochre)}
.footer-contacts li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:#cddcf1;margin-bottom:12px}
.footer-contacts svg{flex:0 0 auto;margin-top:2px;color:var(--ochre)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;padding:22px 0;font-size:12.5px;color:#8fa7cc}

/* ---- back to top ---- */
.to-top{position:fixed;right:22px;bottom:22px;width:50px;height:50px;border-radius:50%;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s,visibility .25s,transform .25s,background .2s;z-index:60}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--blue-dark)}