/* Font loaded via HTML <link> tag instead of @import to avoid render blocking */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Plus Jakarta Sans',system-ui,-apple-system,sans-serif;background:#0a0a0f;color:#f0f0ff;line-height:1.7;min-height:100vh;display:flex;flex-direction:column}
a{color:#7c6bff;text-decoration:none}

/* HEADER */
header{background:#13131a;border-bottom:1px solid #2a2a3a;padding:0 20px}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:52px}
.logo{font-family:'Syne',system-ui,sans-serif;font-weight:800;font-size:20px;color:#f0f0ff}
.logo span{color:#7c6bff}
.header-right{display:flex;align-items:center;gap:12px}
.header-link{font-family:'Syne',sans-serif;font-size:12px;font-weight:700;color:#8888aa;border:1px solid #2a2a3a;border-radius:8px;padding:6px 14px;transition:all .2s;display:flex;align-items:center;gap:6px;line-height:1.2;white-space:nowrap}
.header-link:hover{border-color:#7c6bff;color:#f0f0ff}
.header-link-name{color:#f0f0ff;font-weight:800;font-size:13px}
.header-link-desc{color:#555577;font-size:10px;font-weight:600}
.header-link-arrow{color:#7c6bff;font-size:13px}

/* BREADCRUMB */
.breadcrumb{display:flex;flex-wrap:wrap;gap:6px;padding:16px 0 0;align-items:center}
.bc-pill{font-family:'Syne',sans-serif;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;border:1px solid #2a2a3a;color:#555566;background:#0d0d14;transition:all .2s;white-space:nowrap}
.bc-pill:hover{border-color:#4a4a7a;color:#c8c8f0}
.bc-active{background:#7c6bff22;color:#c8c8ff;border-color:#7c6bff55;cursor:default;font-weight:800}

/* LAYOUT */
.container{max-width:860px;margin:0 auto;padding:0 20px}
main{flex:1;padding-bottom:60px}

/* HERO */
.hero{padding:28px 0 20px}
.hero h1{font-family:'Syne',sans-serif;font-size:28px;font-weight:800;line-height:1.25;margin-bottom:8px}
.accent{color:#7c6bff}
.hero-sub{color:#8888aa;font-size:14px;margin-bottom:20px;line-height:1.7;max-width:540px}
.sec-label{font-family:'Syne',sans-serif;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#555577;margin-bottom:14px}

/* CATEGORY CARDS */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:32px}
.cat-card{background:#13131a;border:1px solid #2a2a3a;border-radius:14px;padding:18px 20px;display:block;transition:border-color .2s,background .2s}
.cat-card:hover{border-color:#4a4a7a;background:#16161f}
.cat-badge{font-family:'Syne',sans-serif;font-size:10px;font-weight:700;padding:3px 9px;border-radius:5px;display:inline-block;width:fit-content;letter-spacing:.05em;margin-bottom:8px}
.badge-blue{background:#1e2a4a;color:#60a5fa}
.badge-coral{background:#3a1a1a;color:#f87171}
.badge-teal{background:#0f2a20;color:#34d399}
.badge-purple{background:#2a1a3a;color:#c084fc}
.badge-green{background:#0f2a1a;color:#4ade80}
.badge-amber{background:#2a1f0a;color:#fbbf24}
.cat-name{font-family:'Syne',sans-serif;font-size:15px;font-weight:700;color:#f0f0ff;margin-bottom:10px}
.cat-tools{display:flex;flex-wrap:wrap;gap:5px;margin-top:4px}
.cat-tool-pill{font-size:10px;padding:2px 8px;border-radius:4px;border:1px solid #2a2a3a;color:#8888aa;white-space:nowrap}

/* SUB PILLS */
.sub-pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.sub-pill{padding:6px 16px;border:1px solid #2a2a3a;border-radius:20px;font-size:13px;color:#8888aa;background:#13131a;white-space:nowrap;display:inline-block;transition:all .2s}
.sub-pill:hover{border-color:#4a4a7a;color:#f0f0ff}
.sub-pill.active{background:#7c6bff;border-color:#7c6bff;color:#fff}

/* NOTES */
.th-note{background:#1e2a4a;border:1px solid #2a4a8a;border-radius:8px;padding:8px 14px;font-size:12px;color:#60a5fa;margin-bottom:14px;font-family:'Syne',sans-serif;font-weight:700}
.tax-note{background:#2a1a0a;border:1px solid #6a3a0a;border-radius:8px;padding:8px 14px;font-size:12px;color:#fbbf24;margin-bottom:14px}

/* CALC */
.calc-eyebrow{font-family:'Syne',sans-serif;font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#555577;margin-bottom:6px}
.calc-title{font-family:'Syne',sans-serif;font-size:24px;font-weight:800;color:#f0f0ff;margin-bottom:6px;line-height:1.2}
.calc-card{background:#13131a;border:1px solid #2a2a3a;border-radius:16px;padding:28px;margin-bottom:16px}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:20px}
.field-grid.g1{grid-template-columns:1fr}
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-family:'Syne',sans-serif;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#8888aa}
.field input,.field select{background:#1c1c28;border:1px solid #2a2a3a;border-radius:10px;color:#f0f0ff;font-family:'Plus Jakarta Sans',sans-serif;padding:11px 13px;font-size:15px;outline:none;transition:border-color .2s;width:100%}
.field input:focus,.field select:focus{border-color:#7c6bff}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238888aa' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px;cursor:pointer}
.field .hint{font-size:11px;color:#555577}

/* DATE FIELD — full width clickable */
.field-date .date-wrap{position:relative;display:flex;align-items:center}
.field-date input[type=date]{width:100%;background:#1c1c28;border:1px solid #2a2a3a;border-radius:10px;color:#f0f0ff;font-family:'Plus Jakarta Sans',sans-serif;padding:11px 13px;font-size:15px;outline:none;transition:border-color .2s;cursor:pointer;appearance:none;-webkit-appearance:none}
.field-date input[type=date]::-webkit-calendar-picker-indicator{position:absolute;left:0;top:0;width:100%;height:100%;opacity:0;cursor:pointer}
.field-date input[type=date]:focus{border-color:#7c6bff}
.date-icon{position:absolute;right:13px;font-size:14px;pointer-events:none;color:#8888aa}

.calc-btn{background:#7c6bff;color:#fff;border:none;border-radius:10px;height:44px;padding:0 28px;font-size:14px;font-family:'Syne',sans-serif;font-weight:700;cursor:pointer;transition:opacity .2s;letter-spacing:.03em}
.calc-btn:hover{opacity:.85}
.error-msg{color:#f87171;font-size:13px;margin-top:8px;display:none}
.error-msg.show{display:block}

/* RESULT */
.result-box{background:linear-gradient(135deg,#1a1a2e,#16213e);border:1px solid #2a2a50;border-radius:14px;padding:20px 24px;margin-top:20px;display:none}
.result-box.show{display:block}
.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}
.r-label{font-family:'Syne',sans-serif;font-size:10px;font-weight:700;color:#6b6baa;text-transform:uppercase;letter-spacing:.07em;margin-bottom:3px}
.r-value{font-family:'Plus Jakarta Sans',sans-serif;font-size:20px;font-weight:700;color:#f0f0ff}
.r-unit{font-size:11px;color:#6b6baa;margin-left:3px}

/* FORMULA */
.formula-card{background:#13131a;border:1px solid #2a2a3a;border-radius:16px;padding:24px 28px;margin-bottom:28px}
.formula-card h3{font-family:'Syne',sans-serif;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:#555577;margin-bottom:12px}
.formula-pre{background:#0d0d14;border-radius:8px;padding:16px 18px;font-family:monospace;font-size:12.5px;color:#c8c8f0;line-height:1.9;white-space:pre;overflow-x:auto;border:1px solid #1c1c28}
.formula-note{font-size:12px;color:#555577;margin-top:10px;line-height:1.6}

/* SEO */
.seo-section{margin-top:40px;padding-top:32px;border-top:1px solid #1c1c28}
.seo-section h2{font-family:'Syne',sans-serif;font-size:16px;font-weight:700;color:#8888aa;margin-bottom:10px}
.seo-section p{font-size:13px;color:#555577;line-height:1.8;margin-bottom:12px}

/* RELATED */
.related-section{margin-top:32px}
.related-section h2{font-family:'Syne',sans-serif;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#555577;margin-bottom:12px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px}
.related-card{background:#13131a;border:1px solid #2a2a3a;border-radius:10px;padding:12px 14px;display:block;transition:border-color .2s}
.related-card:hover{border-color:#4a4a7a}
.rc-cat{font-size:9px;font-weight:700;font-family:'Syne',sans-serif;letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px}
.rc-name{font-size:12px;font-weight:600;color:#c8c8f0}

/* FOOTER */
footer{border-top:1px solid #1c1c28;padding:24px 0;color:#444466;font-size:12px;font-family:'Syne',sans-serif}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-links{display:flex;gap:16px}
.footer-links a{color:#444466;font-size:12px;transition:color .2s}
.footer-links a:hover{color:#8888aa}

/* PRIVACY PAGE */
.prose{max-width:680px}
.prose h2{font-family:'Syne',sans-serif;font-size:18px;font-weight:700;color:#c8c8f0;margin:28px 0 8px}
.prose p{font-size:14px;color:#8888aa;line-height:1.9;margin-bottom:12px}
.prose ul{font-size:14px;color:#8888aa;line-height:1.9;padding-left:20px;margin-bottom:12px}

@media(max-width:640px){
  .cat-grid{grid-template-columns:1fr 1fr}
  .field-grid{grid-template-columns:1fr}
  .calc-card,.formula-card{padding:18px 16px}
  .hero h1,.calc-title{font-size:22px}
  .footer-inner{flex-direction:column;align-items:flex-start}
  .header-link-desc{display:none}
  .header-link{padding:6px 10px;gap:4px}
  .header-link-name{font-size:12px}
}