:root{
  --yellow:#fde32d;
  --pink:#ee4977;
  --navy:#272b6a;
  --aqua:#4bc2c4;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --soft:#f8fafc;
  --gradient:linear-gradient(135deg,#272b6a 0%,#35498c 48%,#4bc2c4 100%);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,#f8fbfc 0%,#eef8f8 100%);color:var(--ink);min-height:100vh;display:flex;flex-direction:column}
button,input,textarea{font:inherit}.hidden{display:none!important}
.hero{background:var(--gradient);color:#fff}.wrap{max-width:1180px;margin:auto;padding:0 20px}.header-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px}.brand{display:flex;align-items:center;gap:14px}.logo{width:56px;height:56px;object-fit:contain;border-radius:14px;background:#fff}.brand h1{margin:0;font-size:34px;line-height:1;font-weight:900;letter-spacing:-.04em}.brand p{margin:6px 0 0;color:rgba(255,255,255,.86);font-size:15px}.tabs{display:flex;gap:6px;background:rgba(255,255,255,.12);padding:6px;border-radius:15px;flex-wrap:wrap}.tab{border:0;background:transparent;color:rgba(255,255,255,.88);font-weight:800;padding:10px 14px;border-radius:11px;cursor:pointer}.tab.active{background:#fff;color:var(--navy);box-shadow:0 8px 20px rgba(0,0,0,.13)}
main{flex:1}.card{background:rgba(255,255,255,.96);border:1px solid rgba(39,43,106,.11);border-radius:24px;box-shadow:0 12px 35px rgba(39,43,106,.07)}.section{padding:28px;margin:26px 0}.title{font-size:28px;margin:0 0 8px;font-weight:900;letter-spacing:-.03em}.muted{color:var(--muted)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.field label{display:block;font-size:13px;font-weight:900;margin-bottom:8px}.input{width:100%;border:1px solid var(--line);border-radius:16px;padding:14px 16px;background:#fff;outline:none}.input:focus{border-color:var(--aqua);box-shadow:0 0 0 4px rgba(75,194,196,.18)}.btn{border:0;border-radius:16px;padding:13px 18px;font-weight:900;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none}.btn.primary{background:var(--navy);color:white}.btn.pink{background:var(--pink);color:#fff}.btn.ghost{background:#fff;color:var(--navy);border:1px solid var(--line)}.btn.aqua{background:var(--aqua);color:#052f36}.btn.warn{background:#fff5f7;color:#be123c;border:1px solid #fecdd3}.btn.small{font-size:12px;padding:8px 10px;border-radius:10px}.actions{display:flex;gap:10px;flex-wrap:wrap}.status{margin-top:14px;font-size:14px;color:var(--muted)}
.onboard{display:grid;grid-template-columns:1.2fr 1fr;gap:22px;align-items:start}.how{background:#f8fafc;border:1px solid var(--line);border-radius:18px;padding:18px}.how ol{margin:10px 0 0;padding-left:22px}.how li{margin:8px 0}.or{font-weight:900;color:var(--muted);align-self:center}.file-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 10px;border-radius:999px;background:#f1f5f9;font-size:12px;font-weight:800;color:#334155}.progressbar{height:12px;background:#e2e8f0;border-radius:999px;overflow:hidden}.progressbar span{display:block;height:100%;background:linear-gradient(90deg,var(--aqua),var(--navy));border-radius:inherit}.mini-stat{background:#f8fafc;border:1px solid var(--line);border-radius:18px;padding:16px}.mini-stat b{display:block;font-size:28px;color:var(--navy)}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}.search{max-width:360px}.tree{font-size:15px}.node{border:1px solid var(--line);background:#fff;border-radius:16px;margin-bottom:10px;overflow:hidden}.node-head{display:flex;align-items:center;gap:10px;padding:13px 14px;cursor:pointer}.node-head:hover{background:#f8fafc}.chev{font-size:12px;color:var(--muted);transition:transform .15s}.open>.node-head .chev{transform:rotate(90deg)}.node-title{font-weight:900;flex:1}.node-meta{font-size:12px;color:var(--muted);font-weight:700}.node-children{display:none;padding:0 14px 14px 30px;border-top:1px solid #f1f5f9}.open>.node-children{display:block}.chapter{border-left:4px solid rgba(75,194,196,.55)}.topic-row{display:flex;align-items:center;gap:10px;padding:9px 8px;border-radius:12px}.topic-row:hover{background:#f8fafc}.topic-row input{width:18px;height:18px}.topic-name{flex:1}.topic-actions{opacity:.7}.empty{text-align:center;color:var(--muted);padding:50px 20px}.danger-zone{border:1px solid #fecdd3;background:#fff7f7;border-radius:18px;padding:18px}.chart-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:18px}.chart-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;min-height:320px}.review-card{border:1px solid var(--line);border-radius:18px;padding:16px;background:#fff;margin-bottom:12px}.footer{border-top:1px solid var(--line);background:#fff;margin-top:30px}.footer-container{max-width:1180px;margin:auto;padding:18px 20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:#334155;font-size:14px}.footer-links{display:flex;gap:18px;flex-wrap:wrap}.footer-links span{white-space:nowrap}
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}.modal{background:#fff;border-radius:22px;max-width:560px;width:100%;box-shadow:0 25px 80px rgba(0,0,0,.25);overflow:hidden}.modal-head{background:var(--navy);color:#fff;padding:18px 20px}.modal-body{padding:20px}.modal-foot{display:flex;justify-content:flex-end;gap:10px;background:#f8fafc;padding:14px 20px}.state-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.state{border:2px solid var(--line);background:#fff;border-radius:14px;padding:12px;text-align:left;font-weight:800;cursor:pointer}.state.selected{border-color:var(--pink);background:#fff5f8}.pdf-report{background:#fff;color:#111;padding:36px;font-family:Arial,sans-serif}.report-head{display:flex;justify-content:space-between;align-items:center;border-bottom:3px solid var(--navy);padding-bottom:16px;margin-bottom:20px}.report-logo{width:60px;height:60px;object-fit:contain}.report-row{border:1px solid #e2e8f0;padding:12px;border-radius:8px;margin-bottom:10px;display:flex;justify-content:space-between;gap:16px}.report-footer{margin-top:22px;border-top:1px solid #e2e8f0;padding-top:10px;font-size:10px;color:#64748b}
@media(max-width:900px){.header-inner,.onboard,.grid2,.grid3,.chart-grid{grid-template-columns:1fr;display:grid}.header-inner{align-items:flex-start}.brand h1{font-size:28px}.tabs{width:100%}.tab{flex:1}.section{padding:20px;margin:16px 0}.node-children{padding-left:16px}.footer-container{display:block}.footer-links{margin-bottom:10px}}
@media print{body>*:not(#pdfTemplate){display:none!important}#pdfTemplate{display:block!important}.pdf-report{padding:0}}

/* Final simplicity pass: calmer, lighter UI with ABHYAST accents used sparingly */
:root{--gradient:linear-gradient(135deg,#ffffff 0%,#f7ffff 58%,#eefafa 100%)}
.hero{background:var(--gradient);color:var(--ink);border-bottom:1px solid var(--line);box-shadow:0 8px 28px rgba(39,43,106,.05)}
.brand p{color:var(--muted)}
.tabs{background:#f8fafc;border:1px solid var(--line)}
.tab{color:var(--navy)}
.tab.active{background:#e9fbfb;color:#0f3f45;box-shadow:none}
.btn.primary{background:var(--pink);color:#fff}
.btn.soft{background:#eefafa;color:#0f3f45;border:1px solid rgba(75,194,196,.35)}
.btn.aqua{background:#eefafa;color:#0f3f45;border:1px solid rgba(75,194,196,.35)}
.node{box-shadow:0 4px 16px rgba(15,23,42,.03)}
.node-title{font-weight:850}.chapter{border-left:4px solid rgba(75,194,196,.45)}
.topic-row{cursor:pointer}.topic-row .btn{opacity:.75}.topic-row:hover .btn{opacity:1}
.status-dot{width:16px;height:16px;border-radius:999px;border:1px solid var(--line);display:inline-block;flex:0 0 auto;background:#f1f5f9;cursor:pointer}
.state-empty{background:#f1f5f9}.state-well{background:#4bc2c4;border-color:#4bc2c4}.state-prepared{background:#fde32d;border-color:#eab308}.state-preparing{background:#ee4977;border-color:#ee4977}.state-not{background:#cbd5e1;border-color:#94a3b8}
.state-label{font-size:12px;color:var(--muted);min-width:96px;text-align:right}.state small{display:block;color:var(--muted);font-weight:600;margin-top:4px;line-height:1.3}.state{display:grid;grid-template-columns:20px 1fr;column-gap:8px;align-items:start}.state small{grid-column:2}.state:hover{border-color:var(--aqua);background:#f7ffff}.modal-head.gentle{background:#f8fafc;color:var(--ink);border-bottom:1px solid var(--line)}.note-label{display:block;margin-top:16px}.gentle-modal{border:1px solid var(--line)}
.progressbar span{background:linear-gradient(90deg,var(--aqua),var(--pink))}
@media(max-width:900px){.state-label{display:none}.header-inner{display:flex}.tabs{overflow:auto;flex-wrap:nowrap}.tab{white-space:nowrap}}
.performance-controls{margin-top:18px;max-width:360px}
.exam-list{margin-top:18px}
.exam-subjects{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.exam-row{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:10px;align-items:center;border:1px solid var(--line);border-radius:16px;padding:10px;background:#fff}
.exam-subject-name{font-weight:900;color:var(--navy)}
@media(max-width:700px){.exam-row{grid-template-columns:1fr}.chart-grid{grid-template-columns:1fr}}