:root{--bg-app: #0f172a;--bg-card: #1e293b;--bg-input: #334155;--primary: #3b82f6;--primary-glow: rgba(59, 130, 246, .5);--accent: #10b981;--accent-glow: rgba(16, 185, 129, .5);--danger: #ef4444;--text-main: #f1f5f9;--text-muted: #94a3b8;--border: #334155;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "Space Mono", monospace;--radius-lg: 16px;--radius-md: 8px;--shadow-card: 0 10px 15px -3px rgba(0, 0, 0, .5), 0 4px 6px -2px rgba(0, 0, 0, .3);--shadow-glow: 0 0 20px var(--primary-glow)}body{margin:0;background-color:var(--bg-app);color:var(--text-main);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;min-height:100vh}h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-main);letter-spacing:-.025em}h1{font-size:2.5rem;background:linear-gradient(to right,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}h2{font-size:1.5rem;margin-bottom:1.5rem;border-bottom:1px solid var(--border);padding-bottom:.5rem}h3{font-size:1.1rem;color:var(--text-muted);margin-bottom:.5rem}p{color:var(--text-muted);line-height:1.6}.container{max-width:900px;margin:0 auto;padding:2rem;min-height:100vh;display:flex;flex-direction:column}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-card);margin-bottom:2rem;position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.8}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}@media(max-width:768px){.grid-2,.grid-3{grid-template-columns:1fr}.container{padding:1rem}}.input-wrapper{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}.input-label{font-size:.9rem;font-weight:500;color:var(--text-muted);display:flex;justify-content:space-between}.input-container{position:relative;display:flex;align-items:center}.input-field{width:100%;background:var(--bg-input);border:2px solid transparent;border-radius:var(--radius-md);font-family:var(--font-mono);font-size:1rem;color:var(--text-main);transition:all .2s;padding:.8rem 1rem .8rem 2.5rem}.input-field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #3b82f61a;background:#1e293b}.input-icon{position:absolute;left:.8rem;color:var(--text-muted);pointer-events:none}.currency-symbol{position:absolute;left:.8rem;color:var(--accent);font-weight:700;font-family:var(--font-mono)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:1rem 2rem;border-radius:var(--radius-md);font-weight:600;transition:all .2s;cursor:pointer;border:none;gap:.5rem}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 10px #3b82f64d}.btn-primary:hover{background:#2563eb;transform:translateY(-2px);box-shadow:0 6px 15px #3b82f666}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-muted)}.btn-outline:hover{border-color:var(--text-main);color:var(--text-main)}.btn-success{background:var(--accent);color:#fff;width:100%;font-size:1.2rem;text-transform:uppercase;letter-spacing:1px}.btn-success:hover{background:#059669;box-shadow:0 0 20px var(--accent-glow)}.stepper{display:flex;justify-content:space-between;margin-bottom:2rem;position:relative}.stepper:before{content:"";position:absolute;top:50%;left:0;right:0;height:2px;background:var(--border);z-index:0}.step-dot{width:40px;height:40px;background:var(--bg-card);border:2px solid var(--border);border-radius:50%;display:flex;align-items:center;justify-content:center;z-index:1;font-weight:700;transition:all .3s}.step-dot.active{border-color:var(--primary);background:var(--bg-app);color:var(--primary);box-shadow:0 0 15px var(--primary-glow)}.step-dot.completed{background:var(--primary);border-color:var(--primary);color:#fff}