:root{--bg:#0d1218;--panel:#151c24;--panel2:#1b2530;--text:#f4f7fb;--muted:#a8b3c2;--blue:#2f6df6;--green:#22c55e;--yellow:#f59e0b;--red:#ef4444;--line:#283545}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif}.sidebar{position:fixed;inset:0 auto 0 0;width:260px;background:#111820;border-right:1px solid var(--line);padding:22px}.brand{display:grid;gap:4px;margin-bottom:24px}.brand span{font-size:30px}.brand small{color:var(--muted)}nav a{display:block;color:#d9e2ee;text-decoration:none;padding:12px 14px;border-radius:12px;margin:4px 0}nav a:hover{background:var(--panel2)}.main{margin-left:260px;padding:28px;max-width:1500px}.top{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:18px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 10px 30px rgba(0,0,0,.18);margin-bottom:18px}.card h2,.card h3{margin-top:0}.muted{color:var(--muted)}.btn{display:inline-block;background:var(--blue);color:#fff;text-decoration:none;border:0;border-radius:12px;padding:11px 15px;cursor:pointer}.btn.secondary{background:var(--panel2)}.btn.danger{background:var(--red)}input,select,textarea{width:100%;background:#0f1620;color:var(--text);border:1px solid var(--line);border-radius:12px;padding:12px;margin:6px 0 14px}label{font-weight:700;font-size:14px}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left}th{color:var(--muted);font-size:13px}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#223044;color:#cfe0ff;margin:2px;font-size:12px}.score{font-weight:800}.score.good{color:var(--green)}.score.mid{color:var(--yellow)}.score.bad{color:var(--red)}.exercise{border-left:4px solid var(--blue);padding-left:14px}.two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.session{white-space:pre-wrap;line-height:1.5}.print-only{display:none}@media(max-width:900px){.sidebar{position:relative;width:100%;}.main{margin-left:0;padding:16px}.two{grid-template-columns:1fr}.top{display:block}}@media print{.sidebar,.btn{display:none}.main{margin:0}.card{box-shadow:none;border:1px solid #ccc;color:#000;background:#fff}body{background:#fff;color:#000}.print-only{display:block}}