:root{--primary:#06c;--primary-hover:#0052a3;--success:#00a86b;--success-hover:#008c59;--danger:#dc3545;--danger-hover:#bb2d3b;--warning:#f59e0b;--warning-hover:#d97706;--purple:#7c3aed;--purple-hover:#6d28d9;--bg-main:#f8fafc;--bg-card:#fff;--bg-hover:#f1f5f9;--text-primary:#1e293b;--text-secondary:#64748b;--text-muted:#94a3b8;--border:#e2e8f0;--border-hover:#cbd5e1;--shadow-sm:0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--radius:12px;--radius-sm:8px;--radius-lg:16px}*{box-sizing:border-box}body{color:var(--text-primary);background:#f5f5f7;min-height:100vh;margin:0;padding:24px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}.container{background:var(--bg-main);border-radius:var(--radius-lg);max-width:1200px;box-shadow:var(--shadow-lg);margin:0 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var(--border);padding:28px;transition:all .3s}.stat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.stat-number{background:linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin:8px 0;font-size:3rem;font-weight:800}.stat-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:1.2px;margin-bottom:8px;font-size:.85rem;font-weight:600}.stat-detail{color:var(--text-muted);margin-top:8px;font-size:.9rem}.streak-history{border-top:1px solid var(--border);text-align:left;color:var(--text-secondary);margin-top:15px;padding-top:10px;font-size:.85rem}.history-item{justify-content:space-between;margin-bottom:4px;display:flex}.history-item span{font-weight:700}.text-success{-webkit-text-fill-color:var(--success)!important;color:var(--success)!important;background:0 0!important}.text-danger{-webkit-text-fill-color:var(--danger)!important;color:var(--danger)!important;background:0 0!important}.charts-wrapper{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:32px;display:grid}.chart-box{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--border);padding:24px}@media (max-width:768px){.charts-wrapper{grid-template-columns:1fr}}.action-bar{flex-wrap:wrap;justify-content:flex-end;gap:12px;margin-bottom:24px;display:flex}.btn-pdf{background-color:var(--purple);color:#fff;border-radius:var(--radius-sm);cursor:pointer;box-shadow:var(--shadow-sm);border:none;align-items:center;gap:8px;padding:12px 24px;font-weight:600;transition:all 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.2s}.btn-cancel:hover{background-color:var(--text-secondary);box-shadow:var(--shadow-md);transform:translateY(-1px)}.modal{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#0009;justify-content:center;align-items:center;width:100%;height:100%;animation:.2s fadeIn;display:flex;position:fixed;top:0;left:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{border-radius:var(--radius);width:90%;max-width:400px;box-shadow:var(--shadow-lg);background:#fff;padding:36px;animation:.3s slideUp}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal h3{color:var(--text-primary);margin-top:0;margin-bottom:20px;font-size:1.5rem}.modal input,.modal select{box-sizing:border-box;border:2px solid var(--border);border-radius:var(--radius-sm);width:100%;margin:12px 0;padding:12px 14px;font-size:.95rem;transition:all .2s}.modal input:focus,.modal select:focus{border-color:var(--primary);outline:none;box-shadow:0 0 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