:root{--color-primary:#3b82f6;--color-secondary:#8b5cf6;--color-accent:#06b6d4;--color-success:#22c55e;--color-warning:#f59e0b;--color-danger:#ef4444;--color-info:#3b82f6;--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-tertiary:#f1f5f9;--text-primary:#0f172a;--text-secondary:#475569;--text-tertiary:#94a3b8;--border-color:#e2e8f0;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);--chart-1:#3b82f6;--chart-2:#22c55e;--chart-3:#f59e0b;--chart-4:#8b5cf6;--chart-5:#ef4444;--chart-6:#06b6d4;--chart-7:#ec4899;--chart-8:#14b8a6;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--spacing-3xl:4rem;--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-full:9999px;--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-base:250ms cubic-bezier(0.4,0,0.2,1);--transition-slow:350ms cubic-bezier(0.4,0,0.2,1)}[data-theme=dark]{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;--text-primary:#f8fafc;--text-secondary:#cbd5e1;--text-tertiary:#64748b;--border-color:#334155;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.3);--shadow-md:0 4px 6px -1px rgba(0,0,0,.4),0 2px 4px -1px rgba(0,0,0,.3);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.4),0 4px 6px -2px rgba(0,0,0,.3);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.5),0 10px 10px -5px rgba(0,0,0,.4);--chart-1:#60a5fa;--chart-2:#4ade80;--chart-3:#fbbf24;--chart-4:#a78bfa;--chart-5:#f87171;--chart-6:#22d3ee;--chart-7:#f472b6;--chart-8:#2dd4bf}*{margin:0;padding:0;box-sizing:border-box}body,html{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color var(--transition-base),color var(--transition-base);overflow-x:hidden}html{scroll-behavior:smooth}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;color:var(--text-primary)}h1{font-size:2.5rem;font-weight:700}h2{font-size:2rem}h3{font-size:1.5rem}p{line-height:1.6;color:var(--text-secondary)}button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:all var(--transition-base)}button:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{font-family:inherit;font-size:1rem;outline:none;transition:all var(--transition-base)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.card{background-color:var(--bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-md);transition:all var(--transition-base);border:1px solid var(--border-color)}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn{padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-weight:500;font-size:.95rem;display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);transition:all var(--transition-base);position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:hsla(0,0%,100%,.2);transform:translate(-50%,-50%);transition:width var(--transition-slow),height var(--transition-slow)}.btn:hover:before{width:300px;height:300px}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:var(--bg-secondary);border-color:var(--color-primary)}.input-field{width:100%;padding:var(--spacing-sm) var(--spacing-md);background-color:var(--bg-primary);border:2px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.95rem}.input-field:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(59,130,246,.1)}.input-field::placeholder{color:var(--text-tertiary)}.label{display:block;margin-bottom:var(--spacing-xs);font-weight:500;font-size:.9rem;color:var(--text-secondary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.fade-in{animation:fadeIn var(--transition-base) ease-out}.slide-in{animation:slideIn var(--transition-base) ease-out}.spinner{width:40px;height:40px;border:4px solid var(--border-color);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:768px){h1{font-size:2rem}h2{font-size:1.5rem}.container{padding:0 var(--spacing-md)}.card{padding:var(--spacing-lg)}}@media (max-width:480px){h1{font-size:1.75rem}h2{font-size:1.25rem}}