:root{
  --bg:#f6f7fb;--card:#fff;--text:#1f2937;--muted:#667085;--accent:#4f46e5;
  --accent-2:#eef2ff;--border:#d0d5dd;--good:#15803d;--bad:#b42318;--shadow:0 8px 24px rgba(16,24,40,.08);
  --radius:18px;--font-scale:1;
}
[data-theme="mint"]{--accent:#0f766e;--accent-2:#ccfbf1}
[data-theme="berry"]{--accent:#be185d;--accent-2:#fce7f3}
[data-theme="sun"]{--accent:#b45309;--accent-2:#fef3c7}
[data-theme="ocean"]{--accent:#0369a1;--accent-2:#e0f2fe}
[data-theme="forest"]{--accent:#166534;--accent-2:#dcfce7}
[data-theme="violet"]{--accent:#6d28d9;--accent-2:#ede9fe}
[data-mode="dark"]{--bg:#111827;--card:#1f2937;--text:#f9fafb;--muted:#cbd5e1;--border:#475569;--accent-2:#312e81;--shadow:none}
*{box-sizing:border-box}html{font-size:calc(16px * var(--font-scale))}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit}.wrap{max-width:1100px;margin:auto;padding:24px}.topbar{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-bottom:24px}
.brand{font-size:1.35rem;font-weight:800}.controls{display:flex;gap:8px;flex-wrap:wrap}button,select,input,textarea{font:inherit}
button,.btn{border:1px solid var(--border);background:var(--card);color:var(--text);padding:10px 14px;border-radius:12px;cursor:pointer}
button.primary,.btn.primary{background:var(--accent);color:white;border-color:var(--accent)}button:hover,.btn:hover{filter:brightness(.98)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}.card{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);text-decoration:none}.card h2,.card h3{margin-top:0}.muted{color:var(--muted)}
.info{background:var(--accent-2);border-left:5px solid var(--accent);padding:14px 16px;border-radius:12px;margin:14px 0}.exercise{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.scorebar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:16px 0}.result{font-weight:700;min-height:1.5em}.good{color:var(--good)}.bad{color:var(--bad)}
.item,.option,.chip,.dropzone{border:1px solid var(--border);background:var(--card);border-radius:12px;padding:10px 12px;margin:8px 0}.chip{display:inline-block;margin:6px;cursor:pointer;touch-action:none}.chip.selected{outline:3px solid var(--accent)}
.dropzone{min-height:48px;background:var(--accent-2)}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.stack{display:grid;gap:12px}.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
label{font-weight:600}input[type=text],input[type=password],textarea,select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text)}textarea{min-height:120px}
.protect-overlay{position:fixed;inset:0;background:rgba(15,23,42,.88);z-index:9999;display:grid;place-items:center;padding:20px}.protect-box{width:min(420px,95vw);background:var(--card);color:var(--text);padding:24px;border-radius:20px}.hidden{display:none!important}
.mark-word{cursor:pointer;border-radius:6px;padding:1px 3px}.mark-word.marked{background:#fde68a;color:#111827}.order-list{display:flex;flex-wrap:wrap;gap:8px}.order-slot{min-height:48px}
.submit-box{margin-top:24px;padding:16px;border-top:1px solid var(--border)}.small{font-size:.9rem}.qr{float:right;margin-left:16px;border:1px solid var(--border);border-radius:12px;padding:8px;background:white;width:118px;height:118px;display:grid;place-items:center;color:#111827;font-size:.75rem;text-align:center}
@media print{.controls,.scorebar button,.submit-box,.qr{display:none!important}body{background:white}.card,.exercise{box-shadow:none}}