/* ════════════════════════════════════════════════
   EduAI — App Shell & Sidebar
   ════════════════════════════════════════════════ */

/* ════ APP ════ */
#pg-app{flex-direction:row;}
.sb{width:252px;flex-shrink:0;height:100%;background:#fff;border-right:1px solid var(--bdr);display:flex;flex-direction:column;overflow:hidden;}
.sb-head{padding:16px 16px 12px;border-bottom:1px solid var(--bdr);}
.sb-brand{display:flex;align-items:center;gap:8px;cursor:pointer;margin-bottom:10px;}
.sbm{width:30px;height:30px;background:linear-gradient(135deg,var(--sf),var(--sf2));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;}
.sbn{font-family:'Syne',sans-serif;font-weight:800;font-size:16px;} .sbn span{color:var(--sf);}
.sb-user{display:flex;align-items:center;gap:8px;padding:8px 10px;background:var(--sfl);border-radius:10px;cursor:pointer;border:1px solid rgba(232,97,10,.12);transition:.2s;}
.sb-user:hover{background:rgba(232,97,10,.12);}
.sbav{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--sf),var(--sf2));display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:#fff;font-family:'Syne',sans-serif;flex-shrink:0;}
.sb-uname{font-size:13px;font-weight:700;}
.sb-ucls{font-size:11px;color:var(--t3);}
.sb-nav{padding:10px 8px;flex:1;overflow-y:auto;}
.sb-nav::-webkit-scrollbar{width:3px;} .sb-nav::-webkit-scrollbar-thumb{background:var(--bdr);border-radius:3px;}
.slbl{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--t4);padding:0 7px;margin:10px 0 4px;}
.ni{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:8px;cursor:pointer;font-size:13px;font-weight:500;color:var(--t2);transition:.15s;margin-bottom:1px;border:1px solid transparent;}
.ni:hover{background:var(--bg);color:var(--tx);}
.ni.active{background:var(--sfl);color:var(--sf);font-weight:700;border-color:rgba(232,97,10,.15);}
.ni-ico{width:26px;height:26px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0;}
.ni.active .ni-ico{background:rgba(232,97,10,.1);}
.ni:not(.active) .ni-ico{background:var(--bg);}
.nibadge{margin-left:auto;padding:2px 7px;border-radius:10px;font-size:10px;font-weight:700;}
.nb-sf{background:var(--sf);color:#fff;} .nb-gn{background:var(--gn);color:#fff;} .nb-rd{background:var(--rd);color:#fff;}
.sb-foot{padding:10px 12px;border-top:1px solid var(--bdr);}
.sb-back{width:100%;padding:7px;border:1.5px solid var(--bdr);background:none;border-radius:8px;font-size:12px;font-weight:600;color:var(--t2);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:5px;transition:.2s;font-family:'Plus Jakarta Sans',sans-serif;}
.sb-back:hover{border-color:var(--sf);color:var(--sf);}
.main{flex:1;height:100%;display:flex;flex-direction:column;overflow:hidden;background:var(--bg);}
.abar{background:#fff;border-bottom:1px solid var(--bdr);padding:0 22px;height:52px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;}
.ab-title{font-family:'Syne',sans-serif;font-size:15px;font-weight:700;}
.ab-r{display:flex;align-items:center;gap:7px;}
.abchip{display:flex;align-items:center;gap:5px;padding:4px 11px;background:var(--gnl);border:1px solid rgba(10,122,46,.18);border-radius:20px;font-size:11px;font-weight:600;color:var(--gn);}
.abdot{width:5px;height:5px;background:var(--gn2);border-radius:50%;animation:pulse 2s infinite;}
.abbtn{width:30px;height:30px;border-radius:7px;background:var(--bg);border:1px solid var(--bdr);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px;transition:.2s;}
.abbtn:hover{border-color:var(--sf);background:var(--sfl);}
.panel{display:none;flex:1;overflow-y:auto;flex-direction:column;}
.panel.active{display:flex;}
.panel::-webkit-scrollbar{width:4px;} .panel::-webkit-scrollbar-thumb{background:var(--bdr);border-radius:4px;}