:root{--bg:#f3f6fb;--card:#fff;--ink:#172033;--muted:#6b7280;--line:#e5e7eb;--primary:#3157d5;--primary2:#2649bd;--danger:#b42318;--good:#147a4b;--warn:#a15c00;--shadow:0 10px 30px rgba(15,23,42,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}button,input,textarea,select{font:inherit}.hidden{display:none!important}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 20% 10%,#e4eaff,transparent 36%),linear-gradient(140deg,#f8fafc,#eef2ff)}.auth-card{width:min(430px,100%);background:#fff;padding:34px;border-radius:24px;box-shadow:var(--shadow);border:1px solid #edf0f7}.brand-mark{display:grid;place-items:center;width:56px;height:56px;border-radius:16px;background:#172554;color:#fff;font-weight:800;letter-spacing:.04em}.brand-mark.small{width:40px;height:40px;border-radius:12px;font-size:14px}.auth-card h1{margin:18px 0 6px}.auth-card p{color:var(--muted);margin-top:0}.stack{display:grid;gap:12px}.stack input,.stack textarea,.stack select,.field input,.field textarea,.field select,.search{width:100%;border:1px solid #d8deea;border-radius:12px;padding:11px 12px;background:#fff;outline:none}.stack input:focus,.stack textarea:focus,.stack select:focus,.field input:focus,.field textarea:focus,.field select:focus,.search:focus{border-color:#8da4ef;box-shadow:0 0 0 3px #e9edff}.btn{border:0;border-radius:11px;padding:10px 15px;font-weight:700;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary2)}.btn.secondary{background:#e9edff;color:#243f9e}.btn.danger{background:#fee4e2;color:var(--danger)}.btn.ghost{background:transparent;color:inherit;border:1px solid var(--line)}.app{min-height:100vh;display:grid;grid-template-columns:250px 1fr}.sidebar{background:#0f172a;color:#e5e7eb;padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;padding:4px 7px 20px}.brand div{display:grid}.brand small{color:#94a3b8}nav{display:grid;gap:5px}nav button{border:0;background:transparent;color:#cbd5e1;text-align:left;padding:11px 12px;border-radius:10px;cursor:pointer}nav button:hover,nav button.active{background:#1e293b;color:#fff}.logout{margin-top:auto;border-color:#334155!important}.main{min-width:0}.topbar{height:82px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 28px;position:sticky;top:0;z-index:5}.topbar h2{margin:0;font-size:20px}.topbar p{margin:3px 0 0;color:var(--muted);font-size:13px}.menu-btn{display:none;border:0;background:#eef2ff;border-radius:9px;padding:8px 10px}.main>#content{padding:26px;max-width:1450px;margin:auto}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 5px 18px rgba(15,23,42,.035)}.metric{cursor:pointer}.metric small{color:var(--muted)}.metric strong{display:block;font-size:32px;margin-top:9px}.metric span{font-size:12px;color:var(--primary);font-weight:700}.section{margin-top:20px}.section-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}.section-title h3{margin:0}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.progress{height:12px;background:#edf0f5;border-radius:20px;overflow:hidden}.progress>i{display:block;height:100%;background:var(--primary);border-radius:inherit}.legend{display:grid;gap:10px;margin-top:14px}.legend-row{display:grid;grid-template-columns:120px 1fr 40px;gap:10px;align-items:center;font-size:14px}.mini-bar{height:8px;background:#eef1f6;border-radius:10px}.mini-bar i{display:block;height:100%;background:#667eea;border-radius:10px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field small{color:var(--muted)}textarea{min-height:92px;resize:vertical}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:14px}.toolbar .search{max-width:320px}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px}table{border-collapse:collapse;width:100%;min-width:760px}th,td{padding:12px 13px;text-align:left;border-bottom:1px solid #edf0f5;font-size:14px}th{background:#f8fafc;color:#526070;font-size:12px;text-transform:uppercase;letter-spacing:.03em}tr:last-child td{border-bottom:0}.difficulty{display:inline-flex;min-width:34px;justify-content:center;padding:4px 7px;border-radius:999px;background:#fff3db;color:#884c00;font-weight:800}.word-link{font-weight:800;color:#2446b8;cursor:pointer}.muted{color:var(--muted)}.quiz-wrap{max-width:760px;margin:20px auto}.quiz-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.quiz-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:var(--shadow)}.quiz-card h3{white-space:pre-line;font-size:24px;line-height:1.35}.options{display:grid;gap:10px;margin-top:20px}.option{border:1px solid #d9dfeb;background:#fff;padding:14px;border-radius:13px;text-align:left;cursor:pointer}.option:hover{border-color:#93a7ea;background:#f8faff}.feedback{margin-top:15px;padding:12px;border-radius:12px;font-weight:650}.feedback.good{background:#e7f7ef;color:var(--good)}.feedback.bad{background:#feeceb;color:var(--danger)}.pill{padding:5px 9px;border-radius:999px;background:#eef2ff;color:#354c9c;font-size:12px;font-weight:800}.empty{text-align:center;padding:48px 20px;color:var(--muted)}.api-secret{font-family:ui-monospace,monospace;background:#0f172a;color:#e2e8f0;padding:12px;border-radius:10px;overflow-wrap:anywhere}.toast{position:fixed;right:20px;bottom:20px;z-index:1000;background:#172033;color:#fff;padding:12px 16px;border-radius:12px;opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s}.toast.show{opacity:1;transform:translateY(0)}.modal{position:fixed;inset:0;background:rgba(15,23,42,.52);display:grid;place-items:center;padding:20px;z-index:50}.modal-card{background:#fff;width:min(760px,100%);max-height:90vh;overflow:auto;border-radius:20px;padding:22px}@media(max-width:950px){.cards{grid-template-columns:repeat(2,1fr)}.grid2{grid-template-columns:1fr}.app{grid-template-columns:1fr}.sidebar{position:fixed;z-index:20;left:-270px;width:250px;transition:.2s}.sidebar.open{left:0}.menu-btn{display:block}}@media(max-width:620px){.cards{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.main>#content{padding:16px}.topbar{padding:0 16px}.quiz-card{padding:18px}}@media print{.sidebar,.topbar,.toolbar .no-print,.no-print{display:none!important}.app{display:block}.main>#content{padding:0}.card,.table-wrap{box-shadow:none;border:0}body{background:#fff}table{min-width:0}th,td{font-size:11pt}.print-title{display:block!important}}