/* IndIATaxCalc V2 — Differentiator Design System
   Aesthetic: Editorial financial journalism — credible, data-dense
   Palette: Ink black + Marigold accent + Off-white
   Typography: Space Grotesk (display) + IBM Plex Sans (body) + JetBrains Mono (numbers)
*/
:root{
  --ink:#0A0E1A; --ink2:#141823; --ink3:#1E2330; --ink-soft:#2A3040;
  --marigold:#F4A012; --marigold2:#F7B94A; --marigold-dark:#D68810;
  --marigold-bg:#FFF6E1; --marigold-border:#F7D97E;
  --paper:#FDFBF5; --paper2:#FFFFFF; --paper3:#F5F2E8;
  --text:#0A0E1A; --text2:#454B5C; --text3:#6B7383;
  --border:#E8E4D8; --border2:#D4CFC0;
  --green:#0E7C4A; --green-bg:#E8F5EC;
  --red:#C73E3E; --red-bg:#FBEBEB;
  --blue:#1E5A96; --blue-bg:#E5F0FB;
  --radius:8px; --radius-sm:4px; --radius-lg:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'IBM Plex Sans',-apple-system,sans-serif;background:var(--paper);color:var(--text);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;font-weight:700;line-height:1.15;letter-spacing:-0.5px;color:var(--ink)}
a{color:var(--marigold-dark);text-decoration:none;border-bottom:1px solid transparent;transition:all .15s}
a:hover{border-bottom-color:var(--marigold-dark)}
code,.mono{font-family:'JetBrains Mono',monospace;font-size:13px;background:var(--ink);padding:2px 7px;border-radius:3px;color:var(--marigold2)}
.num{font-family:'JetBrains Mono',monospace;font-variant-numeric:tabular-nums}

/* NAV — minimal editorial */
.nav{background:var(--ink);border-bottom:1px solid var(--ink-soft);padding:0 24px;position:sticky;top:0;z-index:100}
.nav-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;height:60px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;color:var(--paper);font-family:'Space Grotesk';font-weight:800;font-size:16px;border:none}
.logo:hover{color:var(--marigold2);border:none}
.logo-mark{width:30px;height:30px;background:var(--marigold);color:var(--ink);border-radius:4px;display:grid;place-items:center;font-family:'JetBrains Mono';font-weight:900;font-size:12px}
.nav-links{display:flex;gap:2px}
.nav-links a{font-size:13px;color:rgba(253,251,245,.65);padding:7px 12px;border-radius:var(--radius-sm);border:none;font-weight:500}
.nav-links a:hover{background:var(--ink-soft);color:var(--paper);border:none}
.nav-cta{margin-left:auto;background:var(--marigold);color:var(--ink);padding:8px 16px;border-radius:var(--radius-sm);font-weight:700;font-size:13px;border:none}
.nav-cta:hover{background:var(--marigold2);color:var(--ink);border:none}

/* HERO */
.hero{padding:80px 24px 64px;border-bottom:1px solid var(--border);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-40%;right:-15%;width:600px;height:600px;background:radial-gradient(circle,rgba(244,160,18,.08) 0%,transparent 70%);pointer-events:none}
.hero-inner{max-width:1000px;margin:0 auto;position:relative}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono';font-size:11px;font-weight:700;color:var(--marigold-dark);text-transform:uppercase;letter-spacing:2px;margin-bottom:24px}
.hero-eyebrow::before{content:"";width:32px;height:1px;background:var(--marigold-dark)}
.hero h1{font-size:clamp(36px,5.5vw,62px);line-height:1.05;letter-spacing:-2px;margin-bottom:24px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--marigold-dark);position:relative;display:inline-block}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:var(--marigold-bg);z-index:-1}
.hero-sub{font-size:18px;color:var(--text2);max-width:680px;line-height:1.65;margin-bottom:32px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px;padding-top:32px;border-top:1px solid var(--border)}
.stat-n{font-size:clamp(24px,3vw,34px);font-weight:800;font-family:'Space Grotesk';color:var(--ink);font-variant-numeric:tabular-nums}
.stat-l{font-size:11px;color:var(--text3);margin-top:4px;text-transform:uppercase;letter-spacing:1px}

/* COMPARISON TABLE — Our edge vs ClearTax/Quicko */
.comparison-banner{background:var(--ink);color:var(--paper);padding:56px 24px;border-bottom:4px solid var(--marigold)}
.cb-inner{max-width:1000px;margin:0 auto}
.cb-head{text-align:center;margin-bottom:32px}
.cb-head h2{color:var(--paper);font-size:28px;margin-bottom:8px}
.cb-head p{color:rgba(253,251,245,.65);font-size:14px}
.cb-table{width:100%;border-collapse:collapse}
.cb-table th,.cb-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--ink-soft);font-size:13px}
.cb-table th{font-family:'JetBrains Mono';font-size:10px;text-transform:uppercase;letter-spacing:1.2px;color:rgba(253,251,245,.5);font-weight:700;padding:14px}
.cb-table .ours{background:rgba(244,160,18,.08);font-weight:600}
.cb-table .check{color:var(--marigold);font-weight:700}
.cb-table .cross{color:rgba(253,251,245,.35)}

/* SECTION */
.section{max-width:1200px;margin:0 auto;padding:72px 24px}
.section-head{margin-bottom:40px;max-width:700px}
.section-tag{display:inline-block;font-family:'JetBrains Mono';font-size:11px;text-transform:uppercase;letter-spacing:1.5px;color:var(--marigold-dark);margin-bottom:12px}
.section-title{font-size:clamp(28px,4vw,40px);margin-bottom:12px;letter-spacing:-1px}
.section-sub{font-size:16px;color:var(--text2);line-height:1.7}

/* CALC CARDS */
.calc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.calc-card{background:var(--paper2);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-decoration:none;color:var(--text);display:block;transition:all .2s;border-left:3px solid var(--border);position:relative}
.calc-card:hover{border-color:var(--border2);border-left-color:var(--marigold);transform:translateX(2px);text-decoration:none;color:var(--text);border-bottom:none}
.cc-number{font-family:'JetBrains Mono';font-size:11px;color:var(--text3);font-weight:700;margin-bottom:10px}
.cc-title{font-family:'Space Grotesk';font-size:17px;font-weight:700;margin-bottom:8px;line-height:1.3}
.cc-desc{font-size:13px;color:var(--text2);line-height:1.6;margin-bottom:12px}
.cc-meta{display:flex;gap:8px;flex-wrap:wrap}
.cc-tag{font-family:'JetBrains Mono';font-size:10px;padding:3px 8px;border-radius:3px;font-weight:600}
.tag-search{background:var(--marigold-bg);color:var(--marigold-dark)}
.tag-unique{background:var(--ink);color:var(--marigold2)}
.tag-new{background:var(--green-bg);color:var(--green)}

/* CALCULATOR PAGE */
.calc-page{max-width:1100px;margin:0 auto;padding:40px 24px 80px}
.breadcrumb{font-size:12px;color:var(--text3);margin-bottom:20px;font-family:'JetBrains Mono'}
.breadcrumb a{color:var(--text2);border:none}
.cp-header{margin-bottom:32px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.cp-badge{display:inline-flex;align-items:center;gap:6px;font-family:'JetBrains Mono';font-size:10px;text-transform:uppercase;letter-spacing:1.2px;color:var(--marigold-dark);margin-bottom:12px;font-weight:700}
.cp-title{font-size:clamp(26px,4vw,42px);letter-spacing:-1px;margin-bottom:12px}
.cp-subtitle{font-size:16px;color:var(--text2);max-width:640px;line-height:1.65}
.cp-body{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:720px){.cp-body{grid-template-columns:1fr}}

/* CARDS */
.card{background:var(--paper2);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.card-title{font-family:'JetBrains Mono';font-size:11px;color:var(--text3);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:18px;font-weight:700;padding-bottom:12px;border-bottom:1px solid var(--border)}

/* FORMS */
.fg{margin-bottom:14px}
.fl{font-size:12px;font-weight:600;color:var(--text2);margin-bottom:5px;display:block}
.fi,.fs,.fta{width:100%;background:var(--paper2);border:1.5px solid var(--border2);border-radius:var(--radius-sm);padding:10px 12px;color:var(--ink);font-family:'IBM Plex Sans';font-size:14px;outline:none;transition:border-color .15s}
.fi:focus,.fs:focus,.fta:focus{border-color:var(--marigold-dark)}
.fi.num,.fs.num{font-family:'JetBrains Mono';font-variant-numeric:tabular-nums}
.fta{resize:vertical;min-height:80px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.f3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.fi-suffix{position:relative}
.fi-suffix input{padding-right:46px}
.fi-suffix::after{content:attr(data-suffix);position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--text3);font-family:'JetBrains Mono';pointer-events:none}

/* CHECKBOX */
.checkbox{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text);cursor:pointer;padding:10px 12px;background:var(--paper3);border-radius:var(--radius-sm);border:1px solid var(--border);transition:all .15s}
.checkbox:hover{border-color:var(--marigold-dark)}
.checkbox input{accent-color:var(--marigold-dark);width:16px;height:16px}

/* BUTTONS */
.btn{padding:11px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:700;cursor:pointer;font-family:'Space Grotesk';border:none;transition:all .15s;display:inline-flex;align-items:center;gap:8px;letter-spacing:.2px;text-decoration:none}
.btn-primary{background:var(--marigold);color:var(--ink)}
.btn-primary:hover{background:var(--marigold2);color:var(--ink)}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-ink:hover{background:var(--ink2);color:var(--paper)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--border2)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-full{width:100%;justify-content:center;padding:13px}

/* RESULTS */
.result-big{background:var(--ink);color:var(--paper);border-radius:var(--radius);padding:22px;margin-bottom:16px;position:relative;overflow:hidden}
.result-big::before{content:"";position:absolute;top:0;right:0;width:120px;height:120px;background:radial-gradient(circle,rgba(244,160,18,.15) 0%,transparent 70%);pointer-events:none}
.result-label{font-family:'JetBrains Mono';font-size:10px;text-transform:uppercase;letter-spacing:1.5px;color:rgba(253,251,245,.5);margin-bottom:6px}
.result-val{font-family:'Space Grotesk';font-size:36px;font-weight:800;letter-spacing:-1px;color:var(--marigold);font-variant-numeric:tabular-nums}
.result-sub{font-size:12px;color:rgba(253,251,245,.65);margin-top:6px}

.result-row{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--border);font-size:13px}
.result-row:last-child{border:none}
.result-row .lbl{color:var(--text2)}
.result-row .val{font-family:'JetBrains Mono';font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.result-row.total{background:var(--marigold-bg);margin:8px -8px 0;padding:12px;border-radius:var(--radius-sm);border:none}
.result-row.total .lbl{font-weight:700;color:var(--ink)}
.result-row.total .val{font-size:16px;color:var(--marigold-dark)}
.result-row .val.neg{color:var(--red)}
.result-row .val.pos{color:var(--green)}

.stat-pill{display:inline-flex;align-items:center;gap:6px;background:var(--paper3);padding:6px 12px;border-radius:100px;font-size:11px;font-weight:600;color:var(--ink);border:1px solid var(--border)}
.stat-pill .num{font-family:'JetBrains Mono'}

/* ALERT */
.alert{padding:14px 16px;border-radius:var(--radius-sm);margin:14px 0;font-size:13px;line-height:1.6;border-left:3px solid var(--marigold-dark);background:var(--marigold-bg);color:var(--ink)}
.alert-red{background:var(--red-bg);border-left-color:var(--red);color:#7F1D1D}
.alert-green{background:var(--green-bg);border-left-color:var(--green);color:#064E3B}
.alert-blue{background:var(--blue-bg);border-left-color:var(--blue);color:#1E3A8A}
.alert h4{font-size:13px;font-weight:700;margin-bottom:4px;color:inherit}
.alert p{color:inherit;font-size:13px;margin:0}
.alert ul{margin-top:8px;padding-left:20px}
.alert li{font-size:12px;margin-bottom:4px}

/* TABLE */
.data-tbl{width:100%;border-collapse:collapse;margin:12px 0;font-size:12px}
.data-tbl th{font-family:'JetBrains Mono';font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text3);padding:10px;text-align:left;background:var(--paper3);border-bottom:1px solid var(--border);font-weight:700}
.data-tbl td{padding:10px;border-bottom:1px solid var(--border);font-size:12px}
.data-tbl tr:hover td{background:var(--paper3)}
.data-tbl .num{font-family:'JetBrains Mono';font-variant-numeric:tabular-nums}

/* TAB SWITCHER */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px}
.tab{padding:10px 16px;font-size:13px;font-weight:600;color:var(--text3);cursor:pointer;border-bottom:2px solid transparent;transition:all .15s;font-family:'Space Grotesk'}
.tab.active{color:var(--ink);border-bottom-color:var(--marigold)}
.tab-content{display:none}
.tab-content.active{display:block}

/* FAQ */
.faq{max-width:800px;margin:48px auto}
.faq-item{border-bottom:1px solid var(--border);padding:18px 0}
.faq-q{font-size:15px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--ink)}
.faq-a{font-size:14px;color:var(--text2);line-height:1.75;margin-top:12px;display:none}
.faq-a.open{display:block}

/* FOOTER */
.footer{background:var(--ink);color:var(--paper);padding:48px 24px 24px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
.footer h4{font-family:'JetBrains Mono';font-size:11px;text-transform:uppercase;letter-spacing:1.5px;color:var(--marigold2);margin-bottom:14px;font-weight:700}
.footer a{display:block;color:rgba(253,251,245,.65);font-size:13px;margin-bottom:8px;border:none}
.footer a:hover{color:var(--marigold2);border:none}
.footer p{color:rgba(253,251,245,.55);font-size:13px;line-height:1.7;margin-top:10px}
.footer-bottom{max-width:1200px;margin:32px auto 0;padding-top:20px;border-top:1px solid var(--ink-soft);display:flex;justify-content:space-between;font-size:11px;color:rgba(253,251,245,.4);font-family:'JetBrains Mono';flex-wrap:wrap;gap:8px}

/* TOAST */
.toast{position:fixed;bottom:20px;right:20px;background:var(--ink);color:var(--paper);padding:12px 16px;border-radius:var(--radius);font-size:13px;z-index:999;box-shadow:0 10px 30px rgba(0,0,0,.3);border-left:3px solid var(--marigold);transform:translateY(100px);transition:transform .25s}
.toast.show{transform:translateY(0)}

.spin{width:14px;height:14px;border:2px solid rgba(244,160,18,.25);border-top-color:var(--marigold);border-radius:50%;animation:rot .7s linear infinite;display:inline-block}
@keyframes rot{to{transform:rotate(360deg)}}

/* RESPONSIVE */
@media(max-width:768px){
  .nav-links{display:none}
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){.footer-inner{grid-template-columns:1fr}}