:root{--bg: #F0F4FF;--surface: #FFFFFF;--card: #FFFFFF;--border: #E2E8F0;--accent: #3B82F6;--accent-glow: #2563EB;--green: #059669;--yellow: #D97706;--red: #DC2626;--purple: #7C3AED;--text: #0F172A;--muted: #94A3B8;--subtle: #475569;--shadow-sm: 0 1px 3px rgba(15,23,42,.08), 0 1px 2px rgba(15,23,42,.04);--shadow-md: 0 4px 16px rgba(15,23,42,.1), 0 2px 6px rgba(15,23,42,.06);--shadow-lg: 0 12px 40px rgba(15,23,42,.12), 0 4px 12px rgba(15,23,42,.08);--shadow-blue: 0 8px 24px rgba(59,130,246,.25)}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:Mulish,sans-serif;min-height:100vh}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}@keyframes fadeUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes shimmer{0%{background-position:-200% center}to{background-position:200% center}}@keyframes pulse-ring{0%{box-shadow:0 0 #3b82f659}70%{box-shadow:0 0 0 10px #3b82f600}to{box-shadow:0 0 #3b82f600}}.fade-up{animation:fadeUp .5s ease forwards}.fade-up-2{animation:fadeUp .5s ease .08s forwards;opacity:0}.fade-up-3{animation:fadeUp .5s ease .16s forwards;opacity:0}.fade-up-4{animation:fadeUp .5s ease .24s forwards;opacity:0}.glow-btn{animation:pulse-ring 2.5s ease infinite}.btn-primary{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;padding:12px 28px;border-radius:12px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s;font-family:Mulish,sans-serif;letter-spacing:.3px;box-shadow:0 4px 14px #3b82f659;position:relative;overflow:hidden}.btn-primary:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.15) 0%,transparent 60%);pointer-events:none}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px #3b82f673;background:linear-gradient(135deg,#2563eb,#1d4ed8)}.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px #3b82f64d}.btn-primary:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.btn-outline{background:var(--surface);color:var(--subtle);border:1.5px solid var(--border);padding:12px 28px;border-radius:12px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;font-family:Mulish,sans-serif;box-shadow:var(--shadow-sm)}.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:#3b82f60d;box-shadow:0 4px 12px #3b82f61f;transform:translateY(-1px)}.btn-outline:active{transform:translateY(0)}.btn-danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;border:none;padding:12px 28px;border-radius:12px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s;font-family:Mulish,sans-serif;box-shadow:0 4px 14px #ef44444d}.btn-danger:hover{transform:translateY(-2px);box-shadow:0 8px 24px #ef444466}.btn-green{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;padding:12px 28px;border-radius:12px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s;font-family:Mulish,sans-serif;box-shadow:0 4px 14px #10b9814d}.btn-green:hover{transform:translateY(-2px);box-shadow:0 8px 24px #10b98166}.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:var(--shadow-sm);transition:all .2s}.card:hover{border-color:#3b82f640;box-shadow:var(--shadow-md)}.badge{font-size:11px;font-weight:700;padding:3px 10px;border-radius:20px;letter-spacing:.4px}.badge-done{background:#0596691a;color:var(--green);border:1px solid rgba(5,150,105,.2)}.badge-active{background:#3b82f61a;color:var(--accent);border:1px solid rgba(59,130,246,.2)}.badge-locked{background:#94a3b81f;color:var(--muted);border:1px solid rgba(148,163,184,.2)}.badge-score{background:#d977061a;color:var(--yellow);border:1px solid rgba(217,119,6,.2)}.section-tag{background:#3b82f614;color:var(--accent);font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;letter-spacing:1px;text-transform:uppercase;display:inline-block;border:1px solid rgba(59,130,246,.2)}.progress-bar-track{background:#e2e8f0;border-radius:999px;height:8px;overflow:hidden}.progress-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#3b82f6,#60a5fa);transition:width 1s ease;position:relative;overflow:hidden}.progress-bar-fill:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.4) 50%,transparent 100%);background-size:200% 100%;animation:shimmer 2s infinite}input,textarea,select{background:var(--surface);border:1.5px solid var(--border);color:var(--text);padding:12px 16px;border-radius:12px;font-size:14px;font-family:Mulish,sans-serif;width:100%;outline:none;transition:all .2s;box-shadow:var(--shadow-sm)}input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #3b82f61f}input::placeholder,textarea::placeholder{color:#cbd5e1}label{font-size:13px;color:var(--subtle);font-weight:600;display:block;margin-bottom:6px}.tab-btn{padding:8px 20px;border-radius:10px;font-size:13px;font-weight:700;cursor:pointer;border:none;font-family:Mulish,sans-serif;transition:all .2s}.tab-btn.active{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 4px 12px #3b82f64d}.tab-btn.inactive{background:transparent;color:var(--muted)}.tab-btn.inactive:hover{color:var(--text);background:#f1f5f9}.sidebar-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:12px;cursor:pointer;color:var(--muted);font-size:14px;font-weight:600;transition:all .15s;border:none;background:none;width:100%;text-align:left;font-family:Mulish,sans-serif;text-decoration:none}.sidebar-item:hover{background:#f1f5f9;color:var(--text)}.sidebar-item.active{background:#3b82f614;color:var(--accent);border-left:3px solid var(--accent);padding-left:11px}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;text-align:center;box-shadow:var(--shadow-sm);transition:all .2s}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.test-card{background:var(--card);border:1.5px solid var(--border);border-radius:18px;padding:20px;transition:all .25s;cursor:pointer;box-shadow:var(--shadow-sm)}.test-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow-lg)}.test-card.locked{opacity:.5;cursor:not-allowed}.test-card.locked:hover{transform:none;border-color:var(--border);box-shadow:var(--shadow-sm)}.nav-link{color:var(--muted);text-decoration:none;font-size:14px;font-weight:600;padding:8px 14px;border-radius:10px;transition:all .2s;cursor:pointer;border:none;background:none;font-family:Mulish,sans-serif}.nav-link:hover{color:var(--text);background:#f1f5f9}.nav-link.active{color:var(--accent);background:#3b82f614}.divider{height:1px;background:var(--border);margin:20px 0}.tooltip{position:relative}.tooltip:after{content:attr(data-tip);position:absolute;bottom:calc(100% + 6px);left:50%;transform:translate(-50%);background:var(--text);color:var(--surface);font-size:11px;padding:4px 10px;border-radius:6px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s}.tooltip:hover:after{opacity:1}