:root{--primary: #2563eb;--primary-dark: #1d4ed8;--secondary: #10b981;--accent: #f59e0b;--bg-main: #f8fafc;--bg-card: #ffffff;--text-main: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--radius: 12px;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-main);color:var(--text-main);line-height:1.5}#root{min-height:100vh;display:flex;flex-direction:column}.container{max-width:1200px;margin:0 auto;padding:2rem;width:100%}h1,h2,h3{font-weight:700;letter-spacing:-.025em}button{cursor:pointer;transition:all .2s ease}.calculator-container{max-width:600px;margin:0 auto}.card{background:var(--bg-card);padding:2.5rem;border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--border)}h2{margin-bottom:2rem;color:var(--primary)}.calc-form{display:flex;flex-direction:column;gap:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-muted)}.input-row{display:flex;align-items:center;gap:1rem}input{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:8px;font-size:1rem;transition:border-color .2s}input:focus{outline:none;border-color:var(--primary)}.btn-primary{background:var(--primary);color:#fff;padding:1rem;border:none;border-radius:8px;font-weight:700;font-size:1.1rem;margin-top:1rem}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}.result-display{margin-top:2.5rem;padding-top:2rem;border-top:2px dashed var(--border);text-align:center}.big-stat{font-size:3rem;font-weight:800;color:var(--secondary);line-height:1;margin:1rem 0}.big-stat span{font-size:1rem;color:var(--text-muted);font-weight:400}.preview-grid{display:grid;gap:4px;margin-top:2rem;background:var(--bg-main);padding:10px;border-radius:4px;max-height:300px;overflow-y:auto}.panel-box{background:var(--primary);aspect-ratio:1/1.8;border-radius:2px;opacity:.8}.fade-in{animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.small-text{font-size:.8rem;color:var(--text-muted);margin-top:.5rem}