@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap";:root{--primary: #00D4FF;--primary-border: rgba(0, 212, 255, .2);--primary-glow: rgba(0, 212, 255, .08);--accent: #7C3AED;--accent-light: #A78BFA;--success: #10B981;--success-glow: rgba(16, 185, 129, .08);--warning: #F59E0B;--warning-glow: rgba(245, 158, 11, .08);--danger: #EF4444;--danger-glow: rgba(239, 68, 68, .08);--bg-app: #060B18;--bg-card: #0D1626;--bg-deep: #080D1A;--bg-elevated: #1A2540;--text-primary: #E2E8F0;--text-secondary: #6B8CAE;--text-muted: #3D5A73;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--font-display: "Inter", system-ui, -apple-system, sans-serif;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{font-family:var(--font-display);background:var(--bg-app);color:var(--text-primary);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-deep)}::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.main-content{max-width:1200px;margin:0 auto;padding:32px 24px 64px}.page-header{margin-bottom:32px}.page-header h1{font-size:1.75rem;font-weight:800}.subtitle{color:var(--text-secondary);margin-top:4px;font-size:.9rem}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}@media(max-width:900px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media(max-width:540px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.main-content{padding:16px 12px 48px}}.navbar{position:sticky;top:0;z-index:100;background:#060b18eb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--primary-border)}.navbar-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:24px}.navbar-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.1rem;color:var(--text-primary);text-decoration:none;letter-spacing:-.02em;flex-shrink:0}.navbar-logo span{color:var(--primary)}.logo-icon{width:28px;height:28px;border-radius:6px;background:linear-gradient(135deg,var(--primary),var(--accent));flex-shrink:0}.navbar-nav{display:flex;list-style:none;gap:4px;flex:1}.nav-link{padding:6px 14px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:color .15s,background .15s;text-decoration:none}.nav-link:hover{color:var(--text-primary);background:var(--primary-glow);text-decoration:none}.nav-link.active{color:var(--primary);background:var(--primary-glow)}.navbar-user{display:flex;align-items:center;gap:8px;margin-left:auto}.user-avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--primary));display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:#fff;cursor:pointer}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(ellipse at 50% 0%,rgba(0,212,255,.06) 0%,transparent 60%)}.auth-card{width:100%;max-width:440px;background:var(--bg-card);border:1px solid var(--primary-border);border-radius:var(--radius-xl);padding:40px;box-shadow:0 0 60px #00d4ff0f,0 24px 48px #0006}.auth-logo{text-align:center;margin-bottom:32px}.auth-logo h1{font-size:1.6rem;font-weight:800;margin-bottom:6px}.auth-logo p{color:var(--text-secondary);font-size:.875rem}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-footer{text-align:center;margin-top:20px;color:var(--text-secondary);font-size:.875rem}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.form-input,.form-select{width:100%;padding:10px 14px;background:var(--bg-deep);border:1px solid var(--bg-elevated);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9rem;outline:none;transition:border-color .15s,box-shadow .15s}.form-input:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #00d4ff1f}.form-input::placeholder{color:var(--text-muted)}.form-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B8CAE' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px;cursor:pointer}.form-textarea{resize:vertical;min-height:80px;line-height:1.5}.form-error{color:var(--danger);font-size:.85rem;padding:8px 12px;background:var(--danger-glow);border:1px solid rgba(239,68,68,.25);border-radius:var(--radius-md)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 20px;border-radius:var(--radius-md);font-size:.875rem;font-weight:600;border:1px solid transparent;transition:all .15s ease;text-decoration:none;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-lg{padding:12px 28px;font-size:1rem;border-radius:var(--radius-lg)}.btn-sm{padding:5px 12px;font-size:.78rem}.btn-block{width:100%}.btn-primary{background:var(--primary);color:#050d1a;border-color:var(--primary)}.btn-primary:hover:not(:disabled){background:#3df;box-shadow:0 0 24px #00d4ff66}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--bg-elevated)}.btn-secondary:hover:not(:disabled){background:#243050;border-color:var(--primary-border)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:var(--bg-elevated)}.btn-ghost:hover:not(:disabled){background:var(--primary-glow);color:var(--text-primary);border-color:var(--primary-border)}.btn-danger{background:var(--danger-glow);color:var(--danger);border-color:#ef44444d}.btn-danger:hover:not(:disabled){background:#ef444433}.card{background:var(--bg-card);border:1px solid var(--primary-border);border-radius:var(--radius-lg);padding:20px}.card h3{font-size:1rem;font-weight:700}.card-elevated{background:var(--bg-card);border:1px solid rgba(0,212,255,.15);border-radius:var(--radius-lg);padding:20px;box-shadow:0 4px 24px #0000004d}.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:20px;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.badge-primary{background:var(--primary-glow);color:var(--primary);border:1px solid var(--primary-border)}.badge-accent{background:#7c3aed1f;color:var(--accent-light);border:1px solid rgba(124,58,237,.25)}.badge-warning{background:var(--warning-glow);color:var(--warning);border:1px solid rgba(245,158,11,.25)}.badge-success{background:var(--success-glow);color:var(--success);border:1px solid rgba(16,185,129,.25)}.badge-danger{background:var(--danger-glow);color:var(--danger);border:1px solid rgba(239,68,68,.25)}.progress-bar{width:100%;height:6px;background:var(--bg-elevated);border-radius:3px;overflow:hidden}.progress-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,var(--primary),var(--accent-light));transition:width .4s ease}.stat-box{background:var(--bg-card);border:1px solid var(--primary-border);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:4px}.stat-label{font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em}.stat-value{font-size:2rem;font-weight:800;line-height:1;font-family:var(--font-mono);color:var(--text-primary)}.stat-delta{font-size:.75rem;color:var(--text-secondary);margin-top:2px}.streak-display{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;background:#f59e0b1a;border:1px solid rgba(245,158,11,.25);border-radius:20px;font-size:.8rem;font-weight:700;color:var(--warning);font-family:var(--font-mono)}.exercise-card{background:var(--bg-card);border:1px solid var(--primary-border);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:14px;cursor:pointer;transition:border-color .2s,transform .15s,box-shadow .2s}.exercise-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 8px 32px #00d4ff1a}.exercise-icon{width:52px;height:52px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.exercise-difficulty{display:flex;align-items:center;gap:4px}.diff-dot{width:8px;height:8px;border-radius:50%;background:var(--bg-elevated);border:1px solid var(--text-muted)}.diff-dot.filled{border-color:transparent}.exercise-container{display:flex;flex-direction:column;align-items:center;gap:20px;padding:8px 0;width:100%}.exercise-hud{display:flex;gap:24px;flex-wrap:wrap;justify-content:center}.hud-item{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:64px}.hud-label{font-size:.68rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-family:var(--font-mono)}.hud-value{font-size:1.4rem;font-weight:700;font-family:var(--font-mono);color:var(--text-primary);line-height:1}.exercise-arena{background:var(--bg-deep);border:1px solid var(--primary-border);border-radius:var(--radius-lg);overflow:hidden;position:relative}.result-score{font-family:var(--font-mono);font-size:3.5rem;font-weight:900;line-height:1;color:var(--text-primary);text-align:center}.result-grade{font-family:var(--font-mono);font-size:1.1rem;font-weight:700;text-align:center;margin-top:6px;letter-spacing:.05em}.result-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:#080d1aeb;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:24px}.data-table{width:100%;border-collapse:collapse;font-size:.875rem}.data-table th{text-align:left;padding:8px 12px;color:var(--text-muted);font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid var(--bg-elevated);font-family:var(--font-mono)}.data-table td{padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.03);color:var(--text-secondary)}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:#00d4ff08}.td-primary{color:var(--text-primary)!important;font-weight:600}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:24px;animation:fadeIn .15s ease}.modal{background:var(--bg-card);border:1px solid var(--primary-border);border-radius:var(--radius-xl);padding:28px;width:100%;max-width:520px;box-shadow:0 24px 64px #00000080;animation:countIn .2s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-header h3{font-size:1rem;font-weight:700}.modal-close{background:none;border:none;color:var(--text-muted);font-size:1rem;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:color .15s,background .15s}.modal-close:hover{color:var(--text-primary);background:var(--bg-elevated)}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--primary-border);padding-bottom:0}.tab-btn{padding:8px 18px;background:none;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-size:.875rem;font-weight:500;cursor:pointer;margin-bottom:-1px;transition:color .15s,border-color .15s}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.notification{display:flex;align-items:flex-start;gap:10px;padding:12px 16px;border-radius:var(--radius-md);font-size:.875rem;border:1px solid transparent;position:fixed;top:72px;right:20px;z-index:9999;max-width:380px;min-width:260px;animation:slideIn .25s ease;box-shadow:0 8px 32px #0006}.notification.info{background:#00d4ff1a;border-color:#00d4ff4d;color:var(--primary)}.notification.success{background:var(--success-glow);border-color:#10b9814d;color:var(--success)}.notification.warning{background:var(--warning-glow);border-color:#f59e0b4d;color:var(--warning)}.notification.error{background:var(--danger-glow);border-color:#ef44444d;color:var(--danger)}.loading-center{display:flex;align-items:center;justify-content:center;min-height:200px;width:100%}.loader{width:36px;height:36px;border:3px solid var(--bg-elevated);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{transform:translate(20px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes countIn{0%{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}@keyframes targetAppear{0%{transform:scale(.3);opacity:0}to{transform:scale(1);opacity:1}}.fade-in{animation:fadeIn .3s ease}