/* Tube Amp Bias Calculator Styles */
body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#222;background:#fff;line-height:1.6}a{color:#0066cc;text-decoration:none}a:hover{text-decoration:underline}/* Header */
.site-header{background:#1a1a2e;color:#fff;padding:1rem 0;border-bottom:1px solid #333}
.site-title{margin:0;font-size:1.8rem;font-weight:600}
.site-nav{display:flex;gap:1.5rem;flex-wrap:wrap}
.site-nav a{color:#fff;font-size:0.95rem}
/* Container */
.container{max-width:960px;margin:0 auto;padding:0 1rem}
/* Calculator Section */
.calculator-section{padding:1.5rem 0;border-top:1px solid #eee;border-bottom:1px solid #eee}
.calculator-section h2{font-size:1.5rem;margin-top:0;margin-bottom:1rem;color:#1a1a2e}
.calc-grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:2rem}
.input-group{display:flex;flex-direction:column;gap:0.5rem}
.input-group label{font-weight:500;font-size:0.95rem;color:#333}
.input-group input,.input-group select{padding:0.75rem;border:1px solid #ccc;border-radius:4px;font-size:1rem;background:#fff}
.input-group small{color:#666;font-size:0.85rem}
.input-group input:focus,.input-group select:focus{outline:2px solid #0066cc;border-color:#0066cc}
/* Results */
.results-section{background:#f8f9fa;padding:1.5rem;border-radius:8px;margin:1.5rem 0}
.results-section h3{margin-top:0;margin-bottom:1rem;color:#1a1a2e}
.result-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.result-item{display:flex;justify-content:space-between;align-items:center}
.result-label{font-weight:500;color:#555}
.result-value{font-size:1.1rem;font-weight:600;color:#0066cc}
.btn{display:inline-block;padding:0.75rem 1.5rem;border:none;border-radius:4px;cursor:pointer;font-size:1rem;font-weight:500;transition:background 0.2s}
.btn-primary{background:#0066cc;color:#fff}
.btn-primary:hover{background:#0052a3}
.btn-secondary{background:#6c757d;color:#fff}
.btn-secondary:hover{background:#5a6268}
/* Presets Table */
.presets-section{margin:2rem 0}
.presets-section h3{font-size:1.25rem;color:#1a1a2e;margin-bottom:1rem}
#preset-table{width:100%;border-collapse:collapse;background:#fff}
#preset-table th,#preset-table td{padding:0.75rem;border:1px solid #ddd;text-align:left}
#preset-table th{background:#f0f0f0;font-weight:600}
#preset-table tr:nth-child(even){background:#f8f8f8}
/* Support Section */
.support-section{padding:1.5rem 0}
.support-section h2{font-size:1.5rem;margin-top:0;margin-bottom:1rem;color:#1a1a2e}
.support-section p{margin:0 0 1rem;}
.support-section h3{font-size:1.1rem;color:#1a1a2e;margin:1.5rem 0 0.75rem}
.support-section ul{margin:0 0 1rem;padding-left:1.25rem}
.support-section li{margin-bottom:0.5rem}
.support-section li strong{color:#1a1a2e}
.ad-reserve{min-height:120px;background:#f0f0f0;border-radius:4px;display:flex;align-items:center;justify-content:center;color:#666;font-size:0.9rem;margin:2rem 0}
/* Troubleshooting */
.troubleshooting-section{padding:1.5rem 0;background:#f8f9fa}
.troubleshooting-section h2{font-size:1.5rem;margin-top:0;margin-bottom:1rem;color:#1a1a2e}
.faq-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.faq-item{background:#fff;padding:1rem;border-radius:8px;border-left:4px solid #0066cc}
.faq-item h4{margin:0 0 0.5rem;font-size:1rem;color:#1a1a2e}
.faq-item p{margin:0;font-size:0.9rem;color:#555}
/* Footer */
.site-footer{background:#1a1a2e;color:#fff;padding:1.5rem 0;border-top:1px solid #333;margin-top:2rem}
.site-footer p{margin:0.5rem 0}
.footer-links{font-size:0.9rem}
.footer-links a{color:#fff}
.footer-links span{color:#888;margin:0 0.5rem}
/* Responsive */
@media (max-width:600px){
.site-nav{gap:0.75rem}
.site-title{font-size:1.5rem}
.calc-grid{grid-template-columns:1fr}
.result-grid{grid-template-columns:1fr 1fr}
.faq-grid{grid-template-columns:1fr}
}
@media (max-width:400px){
.result-grid{grid-template-columns:1fr}
.btn{width:100%}
}
/* State styles */
.btn:disabled{background:#ccc;cursor:not-allowed}
.input-group input[readonly]{background:#f0f0f0}
/* Print styles */
@media print{
.site-header,.site-nav,.site-footer,.ad-reserve{display:none}
main{padding:0}
.calculator-section{ border:1px solid #ccc}
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}