/* =========================================================
   GIBRAT — стили сайта (единый подключаемый файл)
   ========================================================= */

:root{
  --color-navy-dark:#0f1f38;
  --color-navy:#152a4a;
  --color-navy-light:#1e3a63;
  --color-gold:#c9a227;
  --color-gold-light:#e6c65c;
  --color-cream:#faf7f0;
  --color-paper:#ffffff;
  --color-text:#26313f;
  --color-text-light:#5b6675;
  --color-border:#e6e1d6;

  --font-heading:'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body:'Manrope', 'Segoe UI', Arial, sans-serif;

  --radius:10px;
  --shadow-sm:0 2px 8px rgba(15,31,56,.06);
  --shadow-md:0 8px 24px rgba(15,31,56,.10);
  --container:1280px;
  --header-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--color-text);
  background:var(--color-cream);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{font-family:var(--font-heading);color:var(--color-navy-dark);margin:0 0 .5em;line-height:1.25;}
p{margin:0 0 1em;}
button{font-family:inherit;cursor:pointer;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute;left:-999px;top:0;background:var(--color-gold);
  color:var(--color-navy-dark);padding:10px 16px;z-index:1000;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0;}

/* ---------- Top utility bar ---------- */
.topbar{
  background:var(--color-navy-dark);
  color:#cdd6e3;
  font-size:.8rem;
}
.topbar .container{
  display:flex;align-items:center;justify-content:flex-end;gap:20px;height:36px;
}
.lang-switch{display:flex;gap:2px;align-items:center;}
.lang-switch button{
  background:none;border:none;color:#9fb0c7;font-weight:700;font-size:.78rem;
  padding:4px 8px;border-radius:4px;letter-spacing:.03em;
}
.lang-switch button:hover{color:#fff;}
.lang-switch button.active{color:var(--color-navy-dark);background:var(--color-gold-light);}
.lang-sep{color:#3c5170;}

/* ---------- Header ---------- */
.site-header{
  background:var(--color-navy);
  position:sticky;top:0;z-index:100;
  box-shadow:var(--shadow-sm);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;gap:20px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;}
.brand-logo{
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--color-gold-light),var(--color-gold));
  display:flex;align-items:center;justify-content:center;
  color:var(--color-navy-dark);font-family:var(--font-heading);font-weight:700;font-size:1.3rem;
  flex-shrink:0;
}
.brand-text .brand-name{
  font-family:var(--font-heading);font-size:1.35rem;font-weight:700;letter-spacing:.04em;color:#fff;
}
.brand-text .brand-tagline{font-size:.72rem;color:#a9b8cf;letter-spacing:.03em;}

.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);color:#e8edf5;display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.icon-btn:hover{background:rgba(255,255,255,.14);}
.icon-btn svg{width:18px;height:18px;}
.burger{display:none;}

/* ---------- Main nav ---------- */
.main-nav{background:var(--color-navy-light);border-top:1px solid rgba(255,255,255,.08);}
.main-nav ul{display:flex;flex-wrap:wrap;}
.main-nav a{
  display:block;padding:13px 16px;font-size:.83rem;font-weight:600;color:#dbe4f1;
  letter-spacing:.01em;border-bottom:3px solid transparent;white-space:nowrap;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06);}
.main-nav li.active a{color:var(--color-gold-light);border-bottom-color:var(--color-gold-light);}

/* ---------- Mobile nav drawer ---------- */
@media (max-width: 960px){
  .burger{
    display:flex;width:40px;height:40px;border-radius:8px;border:1px solid rgba(255,255,255,.18);
    background:rgba(255,255,255,.04);align-items:center;justify-content:center;flex-direction:column;gap:4px;
  }
  .burger span{width:20px;height:2px;background:#fff;display:block;}
  .main-nav{
    position:fixed;inset:0 0 0 auto;width:280px;max-width:80%;height:100vh;
    transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;z-index:200;
    box-shadow:-8px 0 24px rgba(0,0,0,.25);
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;padding:70px 8px 24px;}
  .main-nav a{padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.06)!important;}
  .nav-overlay{
    display:none;position:fixed;inset:0;background:rgba(10,17,32,.5);z-index:150;
  }
  .nav-overlay.open{display:block;}
  .nav-close{
    display:flex;position:absolute;top:14px;right:14px;width:36px;height:36px;
    align-items:center;justify-content:center;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:8px;
  }
}
@media (min-width:961px){ .nav-close{display:none;} }

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  background:var(--color-paper);border-bottom:1px solid var(--color-border);
  font-size:.82rem;color:var(--color-text-light);
}
.breadcrumb .container{display:flex;gap:8px;padding-top:12px;padding-bottom:12px;align-items:center;}
.breadcrumb a{color:var(--color-navy);font-weight:600;}
.breadcrumb .sep{color:#c3c9d2;}
.breadcrumb .current{color:var(--color-gold);font-weight:600;}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;padding:90px 24px;text-align:center;overflow:hidden;
  background:
    linear-gradient(160deg, rgba(10,20,38,.88), rgba(15,31,56,.78)),
    url('https://images.unsplash.com/photo-1521587760476-6c12a4b040da?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
}
.hero-inner{position:relative;z-index:2;max-width:820px;margin:0 auto;}
.hero h1{color:#fff;font-size:clamp(1.6rem,3.4vw,2.6rem);letter-spacing:.02em;margin-bottom:.6em;}
.hero p{color:#e3d9b8;font-size:1.05rem;font-style:italic;margin-bottom:1.6em;}
.hero .btn{display:inline-block;}

.page-hero{
  padding:56px 24px;text-align:left;
  background:
    linear-gradient(120deg, rgba(10,20,38,.92), rgba(21,42,74,.86)),
    url('https://images.unsplash.com/photo-1481627834876-b7833e8f5570?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
}
.page-hero .container{max-width:var(--container);}
.page-hero h1{color:#fff;font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:.4em;}
.page-hero p{color:#d7dfec;max-width:760px;font-size:1rem;margin:0;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:30px;
  background:var(--color-gold);color:var(--color-navy-dark);font-weight:700;font-size:.88rem;
  letter-spacing:.02em;border:none;transition:background .2s, transform .2s;
}
.btn:hover{background:var(--color-gold-light);transform:translateY(-1px);}
.btn-outline{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.12);}
.link-arrow{
  font-size:.82rem;font-weight:700;color:var(--color-navy);white-space:nowrap;display:inline-flex;align-items:center;gap:5px;
}
.link-arrow:hover{color:var(--color-gold);}

/* ---------- Layout: sidebar + content ---------- */
.page-body{padding:40px 0 64px;}
.layout{display:grid;grid-template-columns:270px 1fr;gap:32px;align-items:start;}
.layout.with-aside{grid-template-columns:270px 1fr 300px;}
@media (max-width:1100px){
  .layout.with-aside{grid-template-columns:250px 1fr;}
  .layout.with-aside .aside{grid-column:1 / -1;}
}
@media (max-width:800px){
  .layout,.layout.with-aside{grid-template-columns:1fr;}
}

.side-nav{
  background:var(--color-paper);border:1px solid var(--color-border);border-radius:var(--radius);
  padding:10px;position:sticky;top:calc(var(--header-h) + 88px);
}
.side-nav li a{
  display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:8px;
  font-size:.85rem;font-weight:600;color:var(--color-text);
}
.side-nav li a svg{width:18px;height:18px;flex-shrink:0;color:var(--color-navy-light);}
.side-nav li a:hover{background:var(--color-cream);}
.side-nav li.active a{background:var(--color-navy);color:#fff;}
.side-nav li.active a svg{color:var(--color-gold-light);}

.content-main{min-width:0;}
.section{margin-bottom:44px;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px;}
.section-head h2{font-size:1.15rem;letter-spacing:.04em;color:var(--color-navy-dark);}
.eyebrow{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.08em;color:var(--color-gold);
  text-transform:uppercase;margin-bottom:.5em;
}
.lede{color:var(--color-text-light);font-size:1.02rem;max-width:70ch;}

.sample-note{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:#8a6d1f;
  background:#fbf2d6;border:1px solid #eddca4;padding:6px 12px;border-radius:8px;margin-bottom:20px;
}

/* ---------- Cards: news ---------- */
.card-grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr);}
@media (max-width:800px){.card-grid{grid-template-columns:1fr;}}
@media (min-width:801px) and (max-width:1099px){.card-grid{grid-template-columns:repeat(2,1fr);}}

.news-card{
  background:var(--color-paper);border:1px solid var(--color-border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow .2s, transform .2s;
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.news-thumb{
  height:150px;background:linear-gradient(135deg,var(--color-navy),var(--color-navy-light));
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.5);
}
.news-thumb svg{width:34px;height:34px;}
.news-body{padding:16px 18px 18px;}
.news-date{font-size:.72rem;color:var(--color-gold);font-weight:700;letter-spacing:.04em;text-transform:uppercase;}
.news-body h3{font-size:1rem;margin:.4em 0 .5em;}
.news-body p{font-size:.87rem;color:var(--color-text-light);margin-bottom:0;}

/* ---------- Lecture / video cards ---------- */
.lecture-grid{display:grid;gap:22px;grid-template-columns:repeat(4,1fr);}
@media (max-width:1099px){.lecture-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.lecture-grid{grid-template-columns:1fr;}}
.lecture-card{border-radius:var(--radius);overflow:hidden;background:var(--color-paper);border:1px solid var(--color-border);box-shadow:var(--shadow-sm);transition:transform .2s;}
.lecture-card:hover{transform:translateY(-3px);}
.lecture-thumb{
  position:relative;height:140px;
  background:linear-gradient(135deg,#25406b,#152a4a);
  display:flex;align-items:center;justify-content:center;
}
.lecture-thumb .play{
  width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;color:var(--color-navy-dark);
}
.lecture-thumb .play svg{width:18px;height:18px;margin-left:2px;}
.lecture-duration{
  position:absolute;bottom:8px;right:8px;background:rgba(10,17,32,.75);color:#fff;
  font-size:.7rem;padding:2px 7px;border-radius:5px;
}
.lecture-info{padding:14px 16px;}
.lecture-info h3{font-size:.92rem;margin:0 0 .3em;}
.lecture-info span{font-size:.78rem;color:var(--color-text-light);}

/* ---------- Library / book cards ---------- */
.book-grid{display:grid;gap:22px;grid-template-columns:repeat(6,1fr);}
@media (max-width:1099px){.book-grid{grid-template-columns:repeat(3,1fr);}}
@media (max-width:560px){.book-grid{grid-template-columns:repeat(2,1fr);}}
.book-card{text-align:center;}
.book-cover{
  aspect-ratio:3/4;border-radius:8px;background:linear-gradient(150deg,var(--color-navy-light),var(--color-navy-dark));
  display:flex;align-items:center;justify-content:center;color:var(--color-gold-light);
  font-family:var(--font-heading);font-weight:700;font-size:.85rem;padding:14px;text-align:center;
  box-shadow:var(--shadow-sm);border:3px solid var(--color-gold);margin-bottom:10px;
}
.book-card h3{font-size:.85rem;font-weight:700;margin:0;}
.book-card .btn-mini{
  margin-top:8px;display:inline-block;font-size:.74rem;font-weight:700;color:var(--color-navy);
  border-bottom:1.5px solid var(--color-gold);
}

/* ---------- Aside / sidebar news list ---------- */
.aside-box{
  background:var(--color-paper);border:1px solid var(--color-border);border-radius:var(--radius);
  padding:20px;
}
.aside-box + .aside-box{margin-top:24px;}
.aside-box h2{font-size:.95rem;letter-spacing:.03em;margin-bottom:16px;}
.side-news-item{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--color-border);}
.side-news-item:first-of-type{border-top:none;padding-top:0;}
.side-news-icon{
  width:36px;height:36px;border-radius:50%;background:var(--color-cream);color:var(--color-navy);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.side-news-icon svg{width:16px;height:16px;}
.side-news-item .date{font-size:.7rem;color:var(--color-text-light);}
.side-news-item h4{font-size:.85rem;margin:.25em 0;font-family:var(--font-body);font-weight:700;color:var(--color-navy-dark);}
.side-news-item p{font-size:.78rem;color:var(--color-text-light);margin:0;}

/* ---------- Generic content blocks (about, theory, school...) ---------- */
.block{
  background:var(--color-paper);border:1px solid var(--color-border);border-radius:var(--radius);
  padding:26px 28px;margin-bottom:22px;
}
.block h2{font-size:1.15rem;}
.block ul.check-list li{position:relative;padding-left:26px;margin-bottom:10px;font-size:.92rem;}
.block ul.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:4px;
  background:var(--color-gold);
}
.pill-list{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  background:var(--color-cream);border:1px solid var(--color-border);padding:8px 16px;border-radius:20px;
  font-size:.82rem;font-weight:600;color:var(--color-navy);
}

/* ---------- Quotes ---------- */
.quote-grid{display:grid;gap:20px;grid-template-columns:repeat(2,1fr);}
@media (max-width:700px){.quote-grid{grid-template-columns:1fr;}}
.quote-card{
  background:var(--color-navy);color:#f1f4f9;border-radius:var(--radius);padding:28px 26px;position:relative;
  box-shadow:var(--shadow-sm);
}
.quote-card::before{
  content:"“";font-family:var(--font-heading);font-size:3.2rem;color:var(--color-gold);
  position:absolute;top:6px;left:16px;line-height:1;opacity:.8;
}
.quote-card p{position:relative;font-family:var(--font-heading);font-size:1.05rem;font-style:italic;padding-top:20px;margin:0;}

/* ---------- Young researcher cards ---------- */
.info-card{
  background:var(--color-paper);border:1px solid var(--color-border);border-radius:var(--radius);
  padding:22px;height:100%;
}
.info-card .num{
  width:38px;height:38px;border-radius:50%;background:var(--color-gold);color:var(--color-navy-dark);
  display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:14px;
}
.info-card h3{font-size:1rem;}
.info-card p{font-size:.87rem;color:var(--color-text-light);margin:0;}

/* ---------- Media tabs / gallery ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.tab-btn{
  padding:9px 18px;border-radius:20px;border:1px solid var(--color-border);background:var(--color-paper);
  font-size:.83rem;font-weight:700;color:var(--color-text-light);
}
.tab-btn.active{background:var(--color-navy);border-color:var(--color-navy);color:#fff;}
.gallery-grid{display:grid;gap:16px;grid-template-columns:repeat(4,1fr);}
@media (max-width:800px){.gallery-grid{grid-template-columns:repeat(2,1fr);}}
.gallery-item{
  aspect-ratio:4/3;border-radius:8px;background:linear-gradient(135deg,#dfe6ef,#c8d3e2);
  display:flex;align-items:center;justify-content:center;color:#7c8aa0;
}
.gallery-item svg{width:26px;height:26px;}

/* ---------- Contacts ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
@media (max-width:800px){.contact-grid{grid-template-columns:1fr;}}
.contact-info-item{display:flex;gap:14px;margin-bottom:20px;}
.contact-info-item .ic{
  width:42px;height:42px;border-radius:50%;background:var(--color-navy);color:var(--color-gold-light);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.contact-info-item .ic svg{width:18px;height:18px;}
.contact-info-item h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-light);margin:0 0 .2em;font-family:var(--font-body);}
.contact-info-item p{margin:0;font-weight:600;}
.map-box{
  margin-top:10px;height:200px;border-radius:var(--radius);border:1px solid var(--color-border);
  background:repeating-linear-gradient(45deg,#eef1f5,#eef1f5 10px,#e6eaf0 10px,#e6eaf0 20px);
  display:flex;align-items:center;justify-content:center;color:var(--color-text-light);font-size:.85rem;
}
.social-row{display:flex;gap:10px;margin-top:6px;}

.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:.82rem;font-weight:700;margin-bottom:6px;color:var(--color-navy-dark);}
.form-field input,.form-field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--color-border);border-radius:8px;
  font-family:inherit;font-size:.9rem;background:var(--color-cream);
}
.form-field textarea{min-height:120px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus{outline:2px solid var(--color-gold);outline-offset:1px;}
.form-note{font-size:.78rem;color:var(--color-text-light);margin-top:10px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--color-navy-dark);color:#aab6c9;margin-top:40px;padding-top:48px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:32px;}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand .brand-name{color:#fff;font-family:var(--font-heading);font-size:1.3rem;}
.footer-about{font-size:.85rem;margin-top:12px;max-width:38ch;}
.footer-col h5{color:#fff;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;margin-bottom:14px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{font-size:.85rem;color:#aab6c9;}
.footer-col a:hover{color:var(--color-gold-light);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:18px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8rem;
}
.social-icons{display:flex;gap:10px;}
.social-icons a{
  width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;color:#cdd6e3;
}
.social-icons a:hover{background:var(--color-gold);color:var(--color-navy-dark);border-color:var(--color-gold);}
.social-icons svg{width:15px;height:15px;}

/* ---------- Search modal ---------- */
.search-modal{
  position:fixed;inset:0;background:rgba(10,17,32,.72);display:none;
  align-items:flex-start;justify-content:center;padding-top:12vh;z-index:500;
}
.search-modal.open{display:flex;}
.search-box{
  background:#fff;border-radius:var(--radius);width:min(560px,90%);padding:22px;box-shadow:var(--shadow-md);
}
.search-box form{display:flex;gap:10px;}
.search-box input{
  flex:1;padding:13px 16px;border:1px solid var(--color-border);border-radius:8px;font-size:.95rem;
}
.search-box .close-search{
  display:block;margin:0 0 14px auto;width:32px;height:32px;border-radius:50%;
  background:var(--color-cream);display:flex;align-items:center;justify-content:center;
}
.search-box .close-search svg{width:15px;height:15px;}

/* ---------- Back to top ---------- */
.back-to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--color-navy);color:var(--color-gold-light);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s, transform .25s;z-index:80;border:none;
}
.back-to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.back-to-top svg{width:18px;height:18px;}

/* ---------- Utility spacing ---------- */
.mt-0{margin-top:0;}