*{box-sizing:border-box}
:root{--bg:#171717;--side:#202020;--line:#343434;--text:#eee;--muted:#888;--panel:#202020;--accent:#4d8dff}
html,body{margin:0;min-height:100%;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
body{display:flex;min-height:100vh}
button,input,textarea,select{font:inherit}
.sidebar{width:355px;background:var(--side);border-right:1px solid var(--line);min-height:100vh;padding:14px 0;flex-shrink:0;position:relative;z-index:20}
.side-title{font-size:10px;font-weight:800;letter-spacing:1.2px;margin:0 0 12px 147px}
.institute{display:block;width:100%;height:76px;background:none;border:0;cursor:pointer;text-align:left;padding-left:145px}
.logo{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid #333;font-weight:900;font-size:11px;color:#fff;transition:.18s;overflow:hidden}
.institute:hover .logo,.institute.active .logo{transform:scale(1.05);box-shadow:0 0 0 3px rgba(77,141,255,.15),0 0 22px rgba(77,141,255,.25)}
.logo-default{background:#292929}.logo-0{background:#f65b4e;font-size:28px}.logo-1{background:#ffe500;color:#e22}.logo-2{background:#15295d;font-size:22px}.logo-3{background:#050505}.logo-4{background:#fff;color:#222;font-size:24px}.logo-5{background:#5d1194}.logo-6{background:#fff;color:#ff5b24}
.telegram-btn{display:block;margin:20px 25px 0 145px;text-align:center;border:1px solid #3c3c3c;border-radius:7px;padding:10px 5px;color:#aaa;text-decoration:none;font-size:10px;font-weight:bold}.telegram-btn:hover{color:#fff;background:#292929}
.admin-link{display:block;text-align:center;margin:18px 25px 0 145px;color:#555;text-decoration:none;font-size:10px}.admin-link:hover{color:#aaa}
.main{flex:1;min-width:0}.topbar{height:58px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;position:relative}.heading h1{font-size:20px;margin:0;text-align:center}.heading p{display:none;margin:3px 0 0;text-align:center;color:#777;font-size:11px}
.hamburger{display:none;position:absolute;left:12px;background:none;border:0;color:#aaa;font-size:21px;cursor:pointer}
.toolbar{height:58px;border-bottom:1px solid #292929;padding:10px 14px;display:flex;justify-content:flex-end}.search-wrap{width:min(440px,100%);border:1px solid #333;border-radius:6px;background:#1c1c1c;display:flex;align-items:center;padding:0 11px;color:#777}.search-wrap input{width:100%;height:36px;background:none;border:0;outline:0;color:#eee;font-size:13px}.content{width:100%;min-height:calc(100vh - 116px)}.content.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;color:#333;gap:18px}.empty-icon{font-size:30px;color:#282828}
.category{width:100%;height:54px;background:#181818;color:#e7e7e7;border:0;border-bottom:1px solid #080808;display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-size:16px;font-weight:700;cursor:pointer;text-align:left}.category:hover{background:#202020}.arrow{font-size:25px;color:#777}.category small{font-size:11px;color:#666;font-weight:normal;margin-left:auto;margin-right:18px}
.category-head{height:72px;border-bottom:1px solid #333;display:flex;align-items:center;gap:15px;padding:0 20px}.category-head h2{font-size:18px;margin:0}.category-head p{font-size:12px;color:#777;margin:5px 0 0}.back{background:none;border:0;color:#aaa;font-size:28px;cursor:pointer}
.pdf-card{margin:14px 18px;border:1px solid #303030;background:#1e1e1e;border-radius:7px;display:flex;align-items:center;gap:15px;padding:14px}.pdf-icon{font-size:11px;font-weight:bold;border:1px solid #555;border-radius:4px;padding:11px 7px}.pdf-info{flex:1;display:flex;flex-direction:column;gap:5px;min-width:0}.pdf-info strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pdf-info span{font-size:12px;color:#888}.download{color:#ddd;border:1px solid #444;border-radius:5px;padding:8px 13px;text-decoration:none;font-size:12px;white-space:nowrap}.download:hover{background:#2a2a2a}
.no-results{padding:40px;text-align:center;color:#666}.hidden{display:none!important}

/* admin */
.admin-body{display:block}.admin-shell{width:min(1100px,calc(100% - 32px));margin:35px auto}.admin-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}.admin-head h1{margin:8px 0 5px}.admin-head p{margin:0;color:#888}.back-home{color:#999;text-decoration:none;font-size:13px}.panel{background:var(--panel);border:1px solid #343434;border-radius:10px;padding:20px}.panel.narrow{max-width:430px;margin:auto}.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.panel.wide{grid-column:1/-1}.panel h2{font-size:17px;margin:0 0 17px}.panel-title-row{display:flex;justify-content:space-between;align-items:center}.panel-title-row h2{margin:0}
label{display:block;color:#bbb;font-size:12px;margin:0 0 13px}label input,label textarea,label select{display:block;width:100%;margin-top:7px;background:#171717;border:1px solid #3a3a3a;border-radius:6px;color:#eee;padding:10px;outline:none}label textarea{resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.primary,.ghost{border:1px solid #444;border-radius:6px;padding:9px 14px;cursor:pointer}.primary{background:#eee;color:#111;border-color:#eee;font-weight:700}.primary:hover{opacity:.9}.ghost{background:#222;color:#ccc}.ghost:hover{background:#292929}.error{color:#f17b7b;font-size:12px;margin-top:10px}.notice{display:none;margin-bottom:16px;padding:11px;border:1px solid #38506e;background:#1c2835;color:#bcd8ff;border-radius:6px;font-size:13px}.hint{font-size:11px;color:#777;margin:-3px 0 14px}.resource-list{display:flex;flex-direction:column;gap:8px}.resource{display:flex;align-items:center;gap:12px;border:1px solid #303030;border-radius:7px;padding:11px}.resource-main{flex:1;min-width:0}.resource-main strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.resource-main span{display:block;color:#777;font-size:11px;margin-top:4px}.danger{border-color:#573535;color:#e99}.danger:hover{background:#302020}

@media(max-width:800px){
 .sidebar{position:fixed;left:-355px;top:0;transition:left .2s}.sidebar.open{left:0}.mobile-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:10}.sidebar.open~.main .mobile-backdrop{display:block}
 .hamburger{display:block}.topbar{height:52px}.heading h1{font-size:17px}.heading p{display:block}.toolbar{height:52px}.content{min-height:calc(100vh - 104px)}.category{height:58px;font-size:15px}.pdf-card{margin:10px}.admin-grid{grid-template-columns:1fr}.panel.wide{grid-column:auto}.form-row{grid-template-columns:1fr}.admin-shell{width:min(100% - 20px,1100px);margin:20px auto}.admin-head{gap:10px}.admin-head p{font-size:12px}
}