*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#1e2130;--bg2:#252839;--bg3:#2d3147;--bg4:#353a56;--bg5:#3c4163;--border:#ffffff16;--border2:#ffffff24;--border3:#ffffff38;--text:#dde1f0;--text2:#9ea3c0;--text3:#6b7096;--accent:#7c6fff;--accent2:#a78bfa;--accent3:#5a50f0;--green:#22c55e;--amber:#f59e0b;--red:#ef4444;--blue:#3b82f6;--r:12px;--r2:8px;font-family:"Space Grotesk",sans-serif}
body{background:var(--bg);color:var(--text);min-height:100vh;font-size:15px}
.hidden{display:none!important}
.btn{background:var(--accent);color:#fff;border:none;padding:9px 16px;border-radius:var(--r2);font-size:14px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:.15s;font-family:inherit;white-space:nowrap}
.btn:hover{background:var(--accent3)}
.btn-ghost{background:var(--bg3);color:var(--text2);border:1px solid var(--border2)}.btn-ghost:hover{background:var(--bg4);color:var(--text)}
.btn-sm{padding:5px 10px;font-size:12px}.btn-lg{padding:12px 28px;font-size:15px;font-weight:600}
.btn-danger{background:rgba(239,68,68,.12);color:var(--red);border:1px solid rgba(239,68,68,.18)}.btn-danger:hover{background:var(--red);color:#fff;border-color:var(--red)}
.btn-success{background:rgba(34,197,94,.12);color:var(--green);border:1px solid rgba(34,197,94,.2)}.btn-success:hover{background:var(--green);color:#111}
.fg{display:flex;flex-direction:column;gap:5px;margin-bottom:11px}
.fl{font-size:13px;color:var(--text3);font-weight:500}
.fi,.fs,.fta{background:var(--bg3);border:1px solid var(--border2);border-radius:var(--r2);padding:10px 13px;color:var(--text);font-size:14px;font-family:inherit;outline:none;width:100%;transition:.15s}
.fi:focus,.fs:focus,.fta:focus{border-color:rgba(108,99,255,.5)}
.fta{resize:vertical;min-height:80px}
.fr{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.divider{height:1px;background:var(--border);margin:13px 0}
.card{background:var(--bg3);border:none;border-radius:var(--r);overflow:hidden;box-shadow:0 4px 28px rgba(0,0,0,.32)}
.card-hdr{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.card-body{padding:20px}
.card-title{font-size:14px;font-weight:600}
.tw{background:var(--bg3);border:none;border-radius:var(--r);overflow:hidden;overflow-x:auto;box-shadow:0 4px 28px rgba(0,0,0,.32)}
table{width:100%;border-collapse:collapse;min-width:400px}
th{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.4px;color:var(--text3);padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}
td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg4)}
.sbadge{display:inline-flex;align-items:center;gap:4px;font-size:11px;padding:3px 8px;border-radius:20px;font-weight:500}
.s-ok{background:rgba(34,197,94,.1);color:#4ade80}.s-pend{background:rgba(245,158,11,.1);color:#fbbf24}
.s-new{background:rgba(108,99,255,.1);color:var(--accent2)}.s-act{background:rgba(59,130,246,.1);color:#60a5fa}
.lbadge{display:inline-flex;font-size:11px;padding:3px 8px;border-radius:20px;font-weight:500}
.role-admin{background:rgba(239,68,68,.12);color:#f87171}
.role-elev{background:rgba(34,197,94,.12);color:#4ade80}
.role-sim{background:rgba(108,99,255,.12);color:var(--accent2)}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:400;display:none;align-items:center;justify-content:center;padding:16px}
.overlay.open{display:flex}
.modal{background:var(--bg2);border:none;border-radius:16px;padding:28px;width:580px;max-width:100%;max-height:92vh;overflow-y:auto;animation:fadein .2s ease;box-shadow:0 32px 80px rgba(0,0,0,.6),0 8px 24px rgba(0,0,0,.4)}
.modal-lg{width:820px}
.modal-hdr{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.modal-title{font-size:16px;font-weight:600}
.close-btn{background:none;border:none;color:var(--text3);cursor:pointer;padding:4px;border-radius:5px;display:flex;transition:.15s}.close-btn:hover{background:var(--bg4);color:var(--text)}
.toast{position:fixed;bottom:20px;right:20px;background:var(--bg3);border:none;border-radius:12px;padding:13px 18px;font-size:14px;color:var(--text);display:flex;align-items:center;gap:8px;z-index:999;transform:translateY(80px);opacity:0;transition:.28s;pointer-events:none;max-width:320px;box-shadow:0 8px 32px rgba(0,0,0,.4)}
.toast.show{transform:none;opacity:1}
.toast.ok{border-color:rgba(34,197,94,.35)}.toast.ok .td{background:var(--green)}
.toast.err{border-color:rgba(239,68,68,.35)}.toast.err .td{background:var(--red)}
.toast.info{border-color:rgba(108,99,255,.35)}.toast.info .td{background:var(--accent)}
.td{width:7px;height:7px;border-radius:50%;flex-shrink:0}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes tblink{0%,80%,100%{opacity:.2}40%{opacity:1}}
@keyframes tpulse{0%,100%{opacity:1}50%{opacity:.4}}
/* LANDING */
#view-landing{min-height:100vh;display:flex;flex-direction:column}
.land-nav{padding:16px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:rgba(30,33,48,.92);backdrop-filter:blur(14px);position:sticky;top:0;z-index:10}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-icon{width:34px;height:34px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;color:#fff}
.land-pill{display:inline-flex;align-items:center;gap:6px;background:rgba(108,99,255,.1);border:1px solid rgba(108,99,255,.22);border-radius:30px;padding:5px 14px;font-size:12px;color:var(--accent2);margin-bottom:22px}
.grad{background:linear-gradient(135deg,var(--accent2),#60a5fa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
/* Hero: full screen */
.land-hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:80px 24px 100px;position:relative;overflow:hidden}
.land-hero::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:900px;height:900px;background:radial-gradient(circle,rgba(108,99,255,.08) 0%,transparent 60%);pointer-events:none}
.land-math-bg{position:absolute;inset:0;pointer-events:none;user-select:none}
.land-math-bg span{position:absolute;font-size:clamp(30px,5vw,58px);font-weight:700;color:var(--accent);opacity:.045;font-family:'DM Mono',monospace}
.land-h1{font-size:clamp(40px,7vw,72px);font-weight:700;line-height:1.06;letter-spacing:-.03em;margin-bottom:20px}
.land-sub{font-size:17px;color:var(--text2);max-width:500px;line-height:1.7;margin-bottom:32px}
.land-scroll-hint{position:absolute;bottom:32px;color:var(--text3);cursor:pointer;animation:lbounce 2s ease-in-out infinite}
@keyframes lbounce{0%,100%{transform:translateY(0)}50%{transform:translateY(7px)}}
/* Features grid */
.land-feats-sec{padding:80px clamp(24px,6vw,80px);border-top:1px solid var(--border)}
.land-feats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:1100px;margin:0 auto}
.lfeat{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);padding:28px 24px;transition:.2s;cursor:default}
.lfeat:hover{border-color:var(--border3);transform:translateY(-3px);background:var(--bg3);box-shadow:0 12px 40px rgba(0,0,0,.2)}
.lfeat-ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.lfeat-title{font-size:15px;font-weight:600;margin-bottom:8px}
.lfeat-desc{font-size:13px;color:var(--text3);line-height:1.65}
/* Final CTA */
.land-cta-final{text-align:center;padding:80px clamp(24px,6vw,80px);border-top:1px solid var(--border)}
.land-footer-bar{padding:18px 40px;border-top:1px solid var(--border);text-align:center;font-size:12px;color:var(--text3)}
@media(max-width:900px){.land-feats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.land-feats-grid{grid-template-columns:1fr}.land-feats-sec{padding:60px 20px}.land-cta-final{padding:60px 20px}}
/* APP */
#view-app{display:none;height:100vh;overflow:hidden;flex-direction:column}
#view-app.show{display:flex}
.app-inner{display:flex;flex:1;overflow:hidden}
/* Sidebar */
.sidebar{width:250px;background:var(--bg);box-shadow:4px 0 24px rgba(0,0,0,.22);display:flex;flex-direction:column;flex-shrink:0;z-index:10}
.sb-logo{padding:22px 18px 16px;display:flex;align-items:center;gap:10px}
.nav{flex:1;padding:4px 12px 12px;display:flex;flex-direction:column;gap:2px;overflow-y:auto}
.nav-sec{font-size:10px;font-weight:600;color:var(--text3);letter-spacing:.8px;text-transform:uppercase;padding:18px 10px 6px;opacity:.55}
.ni{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;cursor:pointer;color:var(--text3);font-size:14px;font-weight:500;transition:.15s;border:1px solid transparent;user-select:none}
.ni:hover{background:var(--bg3);color:var(--text)}
.ni.active{background:linear-gradient(135deg,rgba(108,99,255,.2),rgba(167,139,250,.08));color:var(--accent2);border-color:rgba(108,99,255,.2);font-weight:600;box-shadow:0 2px 12px rgba(108,99,255,.12)}
.ni svg{width:18px;height:18px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ni .nl{flex:1}
.ni .nb{margin-left:auto;background:var(--red);color:#fff;font-size:10px;padding:2px 7px;border-radius:20px;font-weight:600}
.sb-bottom{padding:12px}
.user-chip{display:flex;align-items:center;gap:9px;padding:10px 12px;border-radius:12px;background:var(--bg3);border:none;box-shadow:0 2px 10px rgba(0,0,0,.2);transition:.15s}
.user-chip:hover{background:var(--bg4)}
.user-av{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;color:#fff;overflow:hidden}
/* Main area */
.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}
.topbar{padding:0 28px;height:58px;display:flex;align-items:center;gap:11px;background:var(--bg2);box-shadow:0 1px 16px rgba(0,0,0,.22);flex-shrink:0}
.topbar-title{font-size:16px;font-weight:600;flex:1}
.content{flex:1;overflow-y:auto;padding:30px 32px}
/* Floating AI button */
.ai-fab{position:fixed;bottom:24px;right:24px;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));border:none;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:890;box-shadow:0 8px 28px rgba(108,99,255,.5),0 2px 8px rgba(0,0,0,.3);transition:.2s;color:#fff}
.ai-fab:hover{transform:scale(1.1);box-shadow:0 12px 36px rgba(108,99,255,.65)}
.ai-fab svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:var(--bg3);border:none;border-radius:var(--r);padding:20px;position:relative;overflow:hidden;box-shadow:0 4px 28px rgba(0,0,0,.3)}
.stat-card::before{content:"";position:absolute;top:0;right:0;width:50px;height:50px;border-radius:0 0 0 50px;opacity:.07}
.stat-card.v1::before{background:var(--accent)}.stat-card.v2::before{background:var(--green)}
.stat-card.v3::before{background:var(--amber)}.stat-card.v4::before{background:var(--blue)}
.stat-label{font-size:11.5px;color:var(--text3);text-transform:uppercase;letter-spacing:.5px;margin-bottom:9px}
.stat-val{font-size:30px;font-weight:700;line-height:1}
.stat-sub{font-size:12px;color:var(--text3);margin-top:6px}
.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:18px;margin-bottom:20px}
.sec-hdr{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;flex-wrap:wrap;gap:8px}
.sec-title{font-size:16px;font-weight:600}
.lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:24px}
.lcard{background:var(--bg3);border:none;border-radius:var(--r);padding:20px;cursor:pointer;transition:.2s;box-shadow:0 4px 20px rgba(0,0,0,.28)}
.lcard:hover{transform:translateY(-3px);box-shadow:0 10px 36px rgba(0,0,0,.36)}
.lcard h3{font-size:14px;font-weight:600;margin:10px 0 6px;line-height:1.4}
.lcard p{font-size:13px;color:var(--text2);line-height:1.55}
.lcard-meta{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:11.5px;color:var(--text3);justify-content:flex-end}
.tags{display:flex;gap:5px;flex-wrap:wrap;margin-top:7px}
.tag{font-size:11px;padding:2px 7px;background:var(--bg4);border:1px solid var(--border);border-radius:20px;color:var(--text3)}
.add-card{border:1px dashed var(--border2);display:flex;align-items:center;justify-content:center;min-height:148px}
.add-card:hover{border-color:var(--accent);background:rgba(108,99,255,.03)}
.pills{display:flex;gap:6px;flex-wrap:wrap}
.pill{padding:7px 15px;background:var(--bg3);border:none;border-radius:30px;font-size:13px;cursor:pointer;transition:.15s;color:var(--text2);user-select:none;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.pill:hover,.pill.active{background:rgba(108,99,255,.1);border-color:rgba(108,99,255,.3);color:var(--accent2)}
.ed-tb{display:flex;gap:3px;padding:7px;background:var(--bg4);border:1px solid var(--border);border-radius:var(--r2) var(--r2) 0 0;flex-wrap:wrap}
.tb-btn{background:none;border:1px solid transparent;border-radius:5px;padding:5px 8px;color:var(--text2);font-size:12px;cursor:pointer;font-family:inherit;transition:.15s}
.tb-btn:hover{background:var(--bg3);border-color:var(--border2);color:var(--text)}
.ed-area{background:var(--bg3);border:1px solid var(--border);border-top:none;border-radius:0 0 var(--r2) var(--r2);padding:13px;min-height:155px;color:var(--text);font-size:13.5px;line-height:1.7;outline:none}
.barem-item{background:var(--bg4);border:1px solid var(--border2);border-radius:var(--r2);padding:12px;margin-bottom:8px}
.barem-item-hdr{display:flex;align-items:center;gap:7px;margin-bottom:8px}
.barem-sub{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r2);padding:7px 10px;margin-top:5px;display:flex;gap:7px;align-items:center}
.timer-display{font-family:"DM Mono",monospace;font-size:48px;font-weight:500;letter-spacing:4px;text-align:center;padding:16px 0;transition:.3s}
.timer-display.warn{color:var(--amber)}.timer-display.danger{color:var(--red);animation:tpulse 1s infinite}
.timer-bar-wrap{height:8px;background:var(--bg4);border-radius:4px;overflow:hidden;margin-bottom:14px}
.timer-bar{height:100%;border-radius:4px;transition:width .6s linear,background .5s}
.upload-zone{border:2px dashed var(--border2);border-radius:var(--r);padding:26px;text-align:center;background:var(--bg3);transition:.15s;cursor:pointer}
.upload-zone:hover{border-color:var(--accent);background:rgba(108,99,255,.04)}
.step-ind-wrap{display:flex;border-radius:var(--r2);overflow:hidden;border:1px solid var(--border);margin-bottom:18px}
.step-ind{flex:1;padding:9px;text-align:center;font-size:12px;font-weight:500;color:var(--text3);background:var(--bg3);border-right:1px solid var(--border);cursor:pointer;transition:.15s}
.step-ind:last-child{border-right:none}
.step-ind.active{background:rgba(108,99,255,.12);color:var(--accent2)}
.step-ind.done{background:rgba(34,197,94,.07);color:var(--green)}
.cb-item{display:flex;align-items:center;gap:8px;padding:7px 9px;border-radius:var(--r2);border:1px solid var(--border);cursor:pointer;font-size:13px;transition:.15s;margin-bottom:4px}
.cb-item:hover{background:var(--bg4)}
.cb-item input{accent-color:var(--accent);width:14px;height:14px;flex-shrink:0}
.sim-workspace{background:var(--bg2);border:none;border-radius:var(--r);overflow:hidden;box-shadow:0 4px 28px rgba(0,0,0,.32)}
.sim-ws-hdr{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:var(--bg3)}
.sim-subj{padding:18px;background:var(--bg4);border-bottom:1px solid var(--border);font-size:13.5px;line-height:1.7;max-height:220px;overflow-y:auto}
.sim-ans-area{padding:18px}
.ans-block{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r2);margin-bottom:12px;overflow:hidden}
.ans-block-hdr{padding:10px 14px;border-bottom:1px solid var(--border);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:space-between}
.ans-ta{width:100%;background:transparent;border:none;outline:none;padding:12px 14px;color:var(--text);font-size:13.5px;font-family:inherit;resize:vertical;min-height:80px;line-height:1.7}
.upload-mini{border:1px dashed var(--border2);border-radius:var(--r2);padding:10px;text-align:center;cursor:pointer;font-size:12.5px;color:var(--text3);transition:.15s;margin:6px 14px 12px}
.upload-mini:hover{border-color:var(--accent);color:var(--accent2)}
.pdf-btn{background:var(--red);border:none;color:#fff;padding:10px 15px;border-radius:var(--r2);font-size:13px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:.15s;font-family:inherit;width:100%;margin-top:10px}
.pdf-btn:hover{background:#c0392b}
.corr-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.score-in{width:52px;background:var(--bg4);border:1px solid var(--border2);border-radius:var(--r2);padding:4px 7px;color:var(--text);font-size:13px;text-align:center;font-family:"DM Mono",monospace;outline:none}
.score-in:focus{border-color:rgba(108,99,255,.4)}
.crit-row{display:flex;align-items:center;gap:9px;padding:8px 0;border-bottom:1px solid var(--border)}
.crit-row:last-child{border-bottom:none}
.total-box{background:var(--bg4);border:1px solid var(--border2);border-radius:var(--r2);padding:11px 13px;display:flex;justify-content:space-between;align-items:center;margin-top:12px}
::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px}
@media(max-width:900px){.stats-grid,.two-col,.fr,.corr-grid{grid-template-columns:1fr}}
@media(max-width:600px){.sidebar{width:54px;box-shadow:2px 0 16px rgba(0,0,0,.25)}.sidebar .sb-logo-name,.sidebar .ni .nl,.sidebar .nav-sec,.sidebar .nb,.sidebar .user-chip .uc-txt{display:none}.sb-logo{justify-content:center;padding:12px 6px}.ni{justify-content:center;padding:12px 6px}.land-nav{padding:14px 20px}}

/* ── LESSON BUILDER ── */
.builder-sidebar{width:52px;background:var(--bg4);border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;padding:10px 0;gap:6px;flex-shrink:0}
.block-btn{width:38px;height:38px;border-radius:var(--r2);background:none;border:1px solid transparent;color:var(--text3);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:.15s;position:relative}
.block-btn:hover{background:var(--bg3);border-color:var(--border2);color:var(--text)}
.block-btn[title]:hover::after{content:attr(title);position:absolute;left:46px;top:50%;transform:translateY(-50%);background:var(--bg);border:1px solid var(--border2);border-radius:6px;padding:4px 9px;font-size:11.5px;color:var(--text);white-space:nowrap;z-index:20;font-family:'Space Grotesk',sans-serif;pointer-events:none}
.builder-canvas{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.lesson-block{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r2);overflow:hidden;position:relative;transition:.15s}
.lesson-block:hover{border-color:var(--border2)}
.lesson-block.dragging{opacity:.4;border:2px dashed var(--accent)}
.lesson-block.drag-over{border-color:var(--accent);background:rgba(108,99,255,.05)}
.block-handle{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg4);border-bottom:1px solid var(--border);cursor:grab;user-select:none}
.block-handle:active{cursor:grabbing}
.block-type-label{font-size:10.5px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text3);flex:1}
.block-content-area{padding:12px}
.block-richtext{min-height:80px;outline:none;font-size:13.5px;line-height:1.75;color:var(--text)}
.block-richtext:empty::before{content:attr(data-placeholder);color:var(--text3)}
.video-preview{background:var(--bg4);border-radius:var(--r2);overflow:hidden;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center}
.video-preview iframe{width:100%;height:100%;border:none}
.file-chip{display:inline-flex;align-items:center;gap:8px;background:var(--bg4);border:1px solid var(--border2);border-radius:var(--r2);padding:8px 12px;font-size:13px}
.img-preview{max-width:100%;border-radius:var(--r2);display:block}
.latex-display{background:var(--bg4);border-left:3px solid var(--accent);padding:12px 16px;border-radius:0 var(--r2) var(--r2) 0;font-family:'DM Mono',monospace;font-size:15px;color:var(--accent2);min-height:36px;overflow-x:auto}
.quiz-option{display:flex;align-items:center;gap:8px;padding:7px 10px;border:1px solid var(--border);border-radius:var(--r2);margin-bottom:5px;font-size:13px;cursor:pointer;transition:.15s}
.quiz-option:hover{background:var(--bg4)}
.quiz-option.correct-ans{border-color:rgba(34,197,94,.4);background:rgba(34,197,94,.07)}
.tree-item{display:flex;align-items:center;gap:6px;padding:6px 8px;border-radius:var(--r2);cursor:pointer;font-size:13px;color:var(--text2);transition:.15s;user-select:none}
.tree-item:hover{background:var(--bg4);color:var(--text)}
.tree-item.active{background:rgba(108,99,255,.12);color:var(--accent2);font-weight:500}
.tree-cls{font-size:11px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.8px;padding:10px 8px 4px;margin-top:4px}
.tree-cap{padding:6px 8px 6px 14px;font-size:12.5px;font-weight:500;color:var(--text2)}
.tree-lect{padding:5px 8px 5px 26px;font-size:12.5px;color:var(--text3)}
.tree-lect:hover{color:var(--text);background:var(--bg4)}
.tree-lect.active{color:var(--accent2);background:rgba(108,99,255,.1)}
.add-inline{background:none;border:none;color:var(--text3);font-size:11.5px;cursor:pointer;padding:3px 7px;border-radius:5px;font-family:inherit;transition:.15s;display:flex;align-items:center;gap:4px}
.add-inline:hover{background:var(--bg3);color:var(--accent2)}
.cls-level-badge{font-size:11px;padding:1px 7px;border-radius:20px;background:rgba(108,99,255,.1);color:var(--accent2);font-weight:500}