:root{--primary:#10b981;--primary-hover:#059669;--bg-color:#f8fafc;--surface:#fff;--text-main:#0f172a;--text-muted:#64748b;--border-color:#e2e8f0;--shadow-sm:0 1px 2px 0 #0000000d;--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-md:.75rem;--radius-lg:1rem;--radius-xl:1.5rem}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}#root{flex-direction:column;min-height:100vh;display:flex}h1{color:var(--text-main);font-size:2rem;font-weight:700}h2{color:var(--text-main);font-size:1.5rem;font-weight:600}h3{color:var(--text-main);font-size:1.25rem;font-weight:600}p{color:var(--text-muted);font-size:1rem}.container{flex-direction:column;flex-grow:1;width:100%;max-width:800px;margin:0 auto;padding:1.5rem;display:flex}.header{background-color:var(--surface);box-shadow:var(--shadow-sm);z-index:10;justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex;position:sticky;top:0}.header-title{color:var(--primary);align-items:center;gap:.75rem;font-size:1.25rem;font-weight:700;display:flex}.card{background-color:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);padding:1.5rem;transition:all .2s}.card:hover{box-shadow:var(--shadow-md)}button.action-card{background-color:var(--surface);border-radius:var(--radius-xl);cursor:pointer;box-shadow:var(--shadow-md);width:100%;color:var(--text-main);border:2px solid #0000;flex-direction:column;justify-content:center;align-items:center;gap:1rem;padding:2rem;font-size:1.25rem;font-weight:600;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}button.action-card:hover{box-shadow:var(--shadow-lg);border-color:var(--primary);color:var(--primary);transform:translateY(-4px)}button.action-card:active{transform:translateY(0)}button.action-card svg{width:48px;height:48px;color:var(--primary);transition:transform .3s}button.action-card:hover svg{transform:scale(1.1)}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:0 4px 14px #10b98163}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-primary:active{transform:translateY(1px)}.btn-outline{border:1px solid var(--border-color);color:var(--text-main);background-color:#0000}.btn-outline:hover{background-color:var(--bg-color);border-color:var(--text-muted)}.input-group{flex-direction:column;gap:.5rem;margin-bottom:1rem;display:flex}.input-label{color:var(--text-muted);font-size:.875rem;font-weight:600}.input-field{border-radius:var(--radius-md);border:1px solid var(--border-color);background-color:var(--surface);outline:none;width:100%;padding:.75rem 1rem;font-size:1rem;transition:border-color .2s,box-shadow .2s}.input-field:focus{border-color:var(--primary);box-shadow:0 0 0 3px #10b98133}.select-field{appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-position:right 1rem center;background-repeat:no-repeat;background-size:1em}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:.4s forwards fadeIn}.grid-2{grid-template-columns:repeat(2,1fr);gap:1.5rem;display:grid}@media (width<=600px){.grid-2{grid-template-columns:1fr}}.numpad{grid-template-columns:repeat(3,1fr);gap:.75rem;margin-top:2rem;display:grid}.numpad-btn{background-color:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-main);cursor:pointer;box-shadow:var(--shadow-sm);justify-content:center;align-items:center;padding:1.25rem;font-size:1.5rem;font-weight:600;transition:all .1s;display:flex}.numpad-btn:active{background-color:var(--border-color);transform:scale(.95)}.numpad-btn.control{background-color:var(--bg-color);color:var(--text-muted);font-size:1rem}.progress-container{background-color:var(--border-color);border-radius:4px;width:100%;height:8px;margin:1rem 0;overflow:hidden}.progress-bar{background-color:var(--primary);height:100%;transition:width .3s}.nav-btn-tall{background-color:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-md);width:60px;color:var(--text-muted);cursor:pointer;box-shadow:var(--shadow-sm);flex-direction:column;justify-content:center;align-items:center;gap:.5rem;font-size:.875rem;font-weight:600;transition:all .2s;display:flex}.nav-btn-tall:active:not(:disabled){background-color:var(--border-color);transform:scale(.95)}.nav-btn-tall:disabled{opacity:.3;cursor:not-allowed;box-shadow:none}.nav-btn-tall.primary{background-color:var(--primary);color:#fff;border:none;box-shadow:0 4px 14px #10b98163}.nav-btn-tall.primary:active{background-color:var(--primary-hover)}