/* TaxCalcHub Production Design System - Updated for AdSense & Core Web Vitals */
:root{--bg:#f8fafc;--card:#fff;--text:#0f172a;--muted:#475569;--primary:#2563eb;--primary-dark:#1d4ed8;--border:#e2e8f0;--success:#16a34a;--success-bg:#f0fdf4;--warning:#ca8a04;--warning-bg:#fefce8}
*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
.container{max-width:960px;margin:0 auto;padding:24px}
header.hero{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;margin-bottom:24px;box-shadow:0 4px 20px rgba(0,0,0,.03)}
header.hero h1{margin-top:0;font-size:30px;line-height:1.25;letter-spacing:-.02em}
.lead{font-size:16px;color:var(--muted);margin-bottom:16px}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;background:#eff6ff;color:#1e40af;padding:6px 12px;border-radius:999px;border:1px solid #dbeafe}
.badge-success{background:#f0fdf4;color:#166534;border-color:#bbf7d0}

.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px;margin:20px 0;box-shadow:0 4px 20px rgba(0,0,0,.03)}
.card h2{margin-top:0;font-size:22px;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:768px){.grid-2,.grid-4{grid-template-columns:1fr}}

label{display:block;font-weight:600;font-size:14px;color:#1e293b;margin-bottom:6px}
input,select{width:100%;padding:12px 14px;border-radius:10px;border:1px solid #cbd5e1;font-size:15px;background:#fff;transition:border-color .15s}
input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
button{background:var(--primary);color:#fff;font-weight:700;font-size:15px;border:0;padding:12px 20px;border-radius:10px;cursor:pointer;transition:background .15s}
button:hover{background:var(--primary-dark)}
button.secondary{background:#475569}

/* Metric / Stat Highlight Cards */
.stat-box{background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center}
.stat-label{font-size:12px;text-transform:uppercase;font-weight:700;color:var(--muted);letter-spacing:.05em}
.stat-val{font-size:26px;font-weight:800;color:var(--primary);margin:6px 0 2px}
.stat-sub{font-size:13px;color:var(--muted)}

/* Tables */
.table-responsive{overflow-x:auto;margin:16px 0;border-radius:12px;border:1px solid var(--border)}
.tax-table{width:100%;border-collapse:collapse;text-align:left;font-size:14px}
.tax-table th{background:#f1f5f9;font-weight:700;padding:12px 16px;border-bottom:1px solid var(--border);color:#334155}
.tax-table td{padding:12px 16px;border-bottom:1px solid var(--border)}
.tax-table tr:last-child td{border-bottom:0}
.tax-table tr:nth-child(even){background:#fafafa}
.tax-table tr.highlight{background:#eff6ff;font-weight:700}

/* E-E-A-T Review Box */
.review-box{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:14px;padding:20px;margin:24px 0;display:flex;gap:16px;align-items:flex-start}
.review-icon{font-size:28px;line-height:1}
.review-title{font-weight:700;font-size:15px;color:#166534;margin-bottom:4px}
.review-desc{font-size:13px;color:#14532d;line-height:1.5;margin:0}

/* FAQ Accordion */
details.faq-item{border:1px solid var(--border);border-radius:12px;padding:14px 18px;margin-bottom:12px;background:#fff}
details.faq-item summary{font-weight:700;font-size:15px;cursor:pointer;outline:none}
details.faq-item p{margin:12px 0 0;font-size:14px;color:#334155;line-height:1.6}

/* Site chrome */
.site-header{position:sticky;top:0;z-index:50;background:rgba(248,250,252,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:14px;justify-content:space-between;padding:14px 24px}
.brand{font-weight:800;letter-spacing:-.02em;text-decoration:none;color:var(--text);font-size:19px}
.nav-links{display:flex;gap:14px;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;font-weight:600;font-size:14px;padding:8px 12px;border-radius:8px;transition:all .15s}
.nav-links a:hover{background:rgba(37,99,235,.08);color:var(--primary)}
.nav-cta{margin-left:auto;text-decoration:none;background:var(--primary);color:#fff;padding:9px 14px;border-radius:10px;font-weight:700;font-size:14px}
@media(max-width:768px){.nav-links{display:none}}

/* Footer */
.site-footer{margin-top:40px;border-top:1px solid var(--border);background:#fff;padding:32px 0}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}
.footer-brand{font-weight:800;font-size:17px;margin-bottom:8px}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.footer-links a{text-decoration:none;color:var(--muted);font-size:14px}
.footer-links a:hover{color:var(--primary)}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr}}

.pill-links a{display:inline-block;margin:6px 6px 0 0;padding:6px 12px;border:1px solid var(--border);border-radius:999px;text-decoration:none;color:#0f172a;background:#fff;font-size:13px;font-weight:600}
.pill-links a:hover{border-color:var(--primary);color:var(--primary)}

/* State & Paycheck Calculator Extensions */
.wage-toggle{display:inline-flex;background:#e2e8f0;padding:4px;border-radius:10px;gap:4px;margin-bottom:18px}
.wage-toggle button{background:transparent;color:#475569;border:0;padding:8px 18px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}
.wage-toggle button.active{background:#fff;color:var(--primary);box-shadow:0 2px 6px rgba(0,0,0,.08)}
.wage-toggle button:hover:not(.active){color:var(--text);background:rgba(255,255,255,.5)}
.tax-visual-bar-wrap{margin:22px 0;background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:18px}
.tax-visual-bar{display:flex;height:24px;border-radius:8px;overflow:hidden;background:#e2e8f0}
.tax-bar-takehome{background:#16a34a;transition:width .3s ease}
.tax-bar-fed{background:#2563eb;transition:width .3s ease}
.tax-bar-fica{background:#f59e0b;transition:width .3s ease}
.tax-bar-state{background:#9333ea;transition:width .3s ease}
.tax-bar-local{background:#db2777;transition:width .3s ease}
.tax-legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:14px;font-size:13px;font-weight:600}
.tax-legend-item{display:inline-flex;align-items:center;gap:6px}
.tax-legend-dot{width:12px;height:12px;border-radius:3px;display:inline-block}
.state-flag-badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;background:#eff6ff;color:#1e40af;padding:6px 12px;border-radius:999px;border:1px solid #bfdbfe}
.state-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin:24px 0}
.state-hub-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px;transition:transform .15s,box-shadow .15s,border-color .15s;text-decoration:none;color:inherit;display:flex;flex-direction:column}
.state-hub-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.06);border-color:var(--primary)}
.state-hub-card h3{margin:0 0 6px;font-size:18px;color:var(--text)}
.state-hub-rate{font-size:26px;font-weight:800;color:var(--primary);margin:8px 0 4px}
.state-hub-desc{font-size:13px;color:var(--muted);margin:0;line-height:1.5}
.state-hub-meta{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.tag-sm{font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px;background:#f1f5f9;color:#475569;border:1px solid #e2e8f0}
.tag-flat{background:#eff6ff;color:#1e40af;border-color:#dbeafe}
.tag-zero{background:#f0fdf4;color:#166534;border-color:#bbf7d0}
.calc-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.copy-btn{background:#f1f5f9;color:#334155;border:1px solid #cbd5e1;padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer}
.copy-btn:hover{background:#e2e8f0}