/* ============================================================
   KETARTH DATA INSIGHTS — Design System
   Signature: the "signal line" — raw, noisy data resolving into
   a clean line. Used in the hero and as a section divider.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --ink:        #0B1220;
  --ink-2:      #121B2E;
  --ink-3:      #1B2740;
  --paper:      #F6F7F9;
  --paper-2:    #ECEEF2;
  --white:      #FFFFFF;
  --signal:     #2F5CFF;
  --signal-deep:#1E3FCC;
  --signal-soft:#E7ECFF;
  --amber:      #F2A93B;
  --amber-deep: #D88E1E;
  --text:       #0B1220;
  --muted:      #58627A;
  --muted-2:    #8890A3;
  --line:       rgba(11,18,32,0.10);
  --line-dark:  rgba(255,255,255,0.12);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1180px;
  --radius: 10px;
  --radius-sm: 6px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
html, body{ overflow-x: hidden; width: 100%; }

/* ============================================================
   MOBILE HARDENING — extra pass for small phones
   ============================================================ */
@media (max-width: 480px){
  .container{ padding: 0 18px; }
  section{ padding: 52px 0; }
  .section-tight{ padding: 38px 0; }
  .hero{ padding: 34px 0 34px; }
  h1{ font-size: clamp(1.85rem, 8vw, 2.5rem); }
  h2{ font-size: clamp(1.4rem, 6.5vw, 1.85rem); }
  .hero-sub{ font-size: 1rem; }
  .hero-actions{ flex-direction: column; align-items:stretch; gap:12px; }
  .hero-actions .btn{ width:100%; }
  .hero-proof{ gap:18px; }
  .card, .form-card{ padding: 22px; }
  .magnet-banner{ padding: 26px 20px; }
  .case-card{ padding: 22px; }
  .footer-grid{ grid-template-columns: 1fr; gap:30px; }
  .stats-strip{ gap:22px; }
  .case-metrics{ gap:16px; }
  table.compare{ font-size:0.8rem; }
  table.compare th, table.compare td{ padding: 9px 8px; }
  .quote-block p{ font-size:1.02rem; }
  .nav-cta{ gap:8px; }
}

/* Brand lockup: never let it overflow the header on narrow phones */
.brand-name{ white-space: nowrap; overflow:hidden; text-overflow:ellipsis; max-width: 46vw; }
@media (max-width: 420px){
  .brand-name span{ display:none; } /* keep just "KETARTH" on very narrow screens */
  .nav{ padding: 14px 16px; }
  .brand-name{ max-width: none; }
  .nav-links{ top: 58px; }
  .process-item{ grid-template-columns: 1fr; gap:8px; }
  .process-item .step-no{ font-size:0.85rem; }
}

/* Tables: scroll horizontally instead of breaking the page width */
.table-scroll{ overflow-x:auto; -webkit-overflow-scrolling: touch; margin: 20px 0; }
.table-scroll table.compare{ margin: 0; min-width: 480px; }

body{
  margin:0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin:0; padding:0; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1{ font-size: clamp(2.4rem, 4.6vw, 4.1rem); font-weight:700; }
h2{ font-size: clamp(1.8rem, 3vw, 2.6rem); }
h3{ font-size: 1.3rem; }
p{ margin:0 0 1em; color: var(--muted); }
.container{ max-width: var(--container); margin: 0 auto; padding: 0 24px; }

:focus-visible{ outline: 2px solid var(--signal); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- Eyebrow / mono labels ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  width: 22px; height: 1px;
  background: var(--signal);
  display:inline-block;
}
.eyebrow.on-dark{ color:#8FB0FF; }
.eyebrow.on-dark::before{ background:#8FB0FF; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family: var(--font-body);
  font-weight:600;
  font-size: 0.95rem;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--amber); color: var(--ink); }
.btn-primary:hover{ background: var(--amber-deep); }
.btn-outline{ background: transparent; border-color: var(--line); color: var(--text); }
.btn-outline:hover{ border-color: var(--signal); color: var(--signal); }
.btn-outline.on-dark{ border-color: var(--line-dark); color: var(--white); }
.btn-outline.on-dark:hover{ border-color: #8FB0FF; color:#8FB0FF; }
.btn-ghost{ background: transparent; color: var(--signal); padding: 8px 0; }
.btn-ghost::after{ content:"→"; margin-left:6px; transition: margin .15s ease; }
.btn-ghost:hover::after{ margin-left:10px; }
.btn-block{ width:100%; }
.btn-sm{ padding: 9px 16px; font-size:0.85rem; }

/* ---------- Nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(11,18,32,0.97);
  border-bottom: 1px solid var(--line-dark);
}
/* Note: intentionally no backdrop-filter here — applying blur/filter to this
   element would make it a new containing block for any position:fixed
   descendant (like .nav-links, the mobile menu panel), breaking full-screen
   fixed positioning of the mobile nav. Solid near-opaque background instead. */
.nav{ display:flex; align-items:center; justify-content:space-between; padding: 16px 24px; max-width: var(--container); margin:0 auto; }
.brand{ display:flex; align-items:center; gap:10px; color: var(--white); }
.brand-mark{ width: 26px; height: 26px; border-radius: 6px; object-fit: cover; display:block; flex-shrink:0; }
.brand-name{ font-family: var(--font-display); font-weight:700; font-size:1rem; letter-spacing: 0.01em; color:var(--white); }
.brand-name span{ color:#8FB0FF; }
.nav-links{ display:flex; align-items:center; gap: 30px; }
.nav-links a{ color: rgba(255,255,255,0.78); font-size:0.92rem; font-weight:500; transition: color .15s ease; position:relative; }
.nav-links a:hover{ color: var(--white); }
.nav-links .dropdown{ position:relative; }
.nav-links .dropdown > a::after{ content:"▾"; font-size:0.6rem; margin-left:5px; opacity:0.7; }
.dropdown-menu{
  position:absolute; top: calc(100% + 18px); left: -16px;
  background: var(--ink-2); border:1px solid var(--line-dark); border-radius: var(--radius);
  padding: 8px; min-width: 220px;
  opacity:0; visibility:hidden; transform: translateY(6px);
  transition: all .18s ease;
  box-shadow: 0 20px 40px rgba(0,0,0,0.35);
}
.dropdown:hover .dropdown-menu{ opacity:1; visibility:visible; transform:translateY(0); }
.dropdown-menu a{ display:block; padding: 10px 12px; border-radius:6px; font-size:0.88rem; }
.dropdown-menu a:hover{ background: rgba(255,255,255,0.06); }
.nav-cta{ display:flex; align-items:center; gap:14px; }
.nav-toggle{ display:none; background:none; border:none; color:var(--white); font-size:1.4rem; cursor:pointer; }

@media (max-width: 900px){
  .nav-links{
    position:fixed; top:64px; left:0; right:0; bottom:0;
    background: var(--ink); flex-direction:column; align-items:flex-start;
    padding: 30px 24px; gap:6px; overflow-y:auto;
    transform: translateX(100%); transition: transform .25s ease;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-links a{ width:100%; padding: 14px 0; border-bottom:1px solid var(--line-dark); }
  .dropdown-menu{ position:static; opacity:1; visibility:visible; transform:none; display:none; border:none; background:transparent; padding-left:12px; box-shadow:none; }
  .dropdown.open .dropdown-menu{ display:block; }
  .nav-toggle{ display:block; }
  .nav-cta .btn-outline{ display:none; }
}

/* ---------- Sticky mobile CTA bar ---------- */
.sticky-cta{
  position: fixed; bottom:0; left:0; right:0; z-index: 90;
  background: var(--ink); border-top:1px solid var(--line-dark);
  padding: 12px 20px; display:none;
  align-items:center; justify-content:space-between; gap:12px;
}
.sticky-cta span{ color:var(--white); font-size:0.85rem; font-weight:500; }
@media (max-width:760px){ .sticky-cta.active{ display:flex; } body{ padding-bottom:70px; } }

/* ---------- Hero ---------- */
.hero{
  background: var(--ink); color: var(--white);
  position:relative; overflow:hidden;
  padding: 90px 0 70px;
}
.hero-grid{ display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items:center; }
.hero h1{ color: var(--white); }
.hero h1 em{ font-style:normal; color:#8FB0FF; }
.hero-sub{ font-size: 1.15rem; color: rgba(255,255,255,0.72); max-width: 520px; margin-bottom: 30px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 34px; }
.hero-proof{ display:flex; gap: 30px; flex-wrap:wrap; padding-top: 24px; border-top: 1px solid var(--line-dark); }
.hero-proof div{ }
.hero-proof strong{ display:block; font-family: var(--font-mono); font-size:1.5rem; color:#8FB0FF; }
.hero-proof span{ font-size:0.8rem; color: rgba(255,255,255,0.6); }
.signal-wrap{ position:relative; }
.signal-wrap svg{ width:100%; height:auto; }

@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero{ padding: 50px 0 50px; }
}

/* ---------- Signal divider (signature motif) ---------- */
.signal-divider{ padding: 6px 0; overflow:hidden; }
.signal-divider svg{ width:100%; height:34px; display:block; }

/* ---------- Section basics ---------- */
section{ padding: 88px 0; }
.section-tight{ padding: 60px 0; }
.section-head{ max-width: 640px; margin-bottom: 50px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.bg-dark{ background: var(--ink); color: var(--white); }
.bg-dark h2, .bg-dark h3{ color: var(--white); }
.bg-dark p{ color: rgba(255,255,255,0.68); }
.bg-alt{ background: var(--paper-2); }

/* ---------- Grids & Cards ---------- */
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.grid-2{ display:grid; grid-template-columns: repeat(2,1fr); gap: 28px; }
.grid-4{ display:grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
@media (max-width: 900px){ .grid-3,.grid-4{ grid-template-columns: 1fr 1fr; } .grid-2{ grid-template-columns:1fr; } }
@media (max-width: 620px){ .grid-3,.grid-4{ grid-template-columns: 1fr; } }

.card{
  background: var(--white); border:1px solid var(--line); border-radius: var(--radius);
  padding: 30px; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover{ transform: translateY(-3px); box-shadow: 0 20px 40px rgba(11,18,32,0.08); border-color: transparent; }
.card .num{ font-family: var(--font-mono); color: var(--signal); font-size:0.85rem; margin-bottom:14px; display:block; }
.card h3{ margin-bottom: 10px; }
.card p{ margin-bottom: 0; font-size:0.95rem; }
.card a.card-link{ display:inline-block; margin-top:16px; font-size:0.85rem; font-weight:600; color:var(--signal); }

.card-dark{ background: var(--ink-2); border:1px solid var(--line-dark); color:var(--white); }
.card-dark p{ color: rgba(255,255,255,0.65); }
.card-dark h3{ color:var(--white); }

.icon-tile{
  width:44px; height:44px; border-radius:9px; background: var(--signal-soft);
  display:flex; align-items:center; justify-content:center; margin-bottom:18px;
  color: var(--signal);
}

/* ---------- Stats strip ---------- */
.stats-strip{ display:flex; flex-wrap:wrap; gap:40px; justify-content:space-between; }
.stat{ flex:1; min-width:140px; }
.stat strong{ font-family: var(--font-mono); font-size:2.1rem; color: var(--signal); display:block; }
.stat span{ color: var(--muted); font-size:0.85rem; }
.bg-dark .stat strong{ color:#8FB0FF; }
.bg-dark .stat span{ color: rgba(255,255,255,0.55); }

/* ---------- Case study preview cards ---------- */
.case-card{
  background: var(--ink); color:var(--white); border-radius: var(--radius);
  padding: 34px; display:flex; flex-direction:column; gap: 22px;
  border: 1px solid var(--line-dark);
}
.case-card .tag{ font-family:var(--font-mono); font-size:0.72rem; color:#8FB0FF; text-transform:uppercase; letter-spacing:0.06em; }
.case-metrics{ display:flex; gap: 26px; flex-wrap:wrap; padding-top:16px; border-top:1px solid var(--line-dark); }
.case-metrics div strong{ display:block; font-family:var(--font-mono); font-size:1.4rem; color:#8FB0FF; }
.case-metrics div span{ font-size:0.75rem; color:rgba(255,255,255,0.55); }

/* ---------- Process steps ---------- */
.process-list{ display:flex; flex-direction:column; }
.process-item{ display:grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 26px 0; border-top:1px solid var(--line); }
.process-item:last-child{ border-bottom:1px solid var(--line); }
.process-item .step-no{ font-family: var(--font-mono); color: var(--signal); font-size:1rem; }
.bg-dark .process-item{ border-color: var(--line-dark); }

/* ---------- Testimonial ---------- */
.quote-block{ border-left: 3px solid var(--signal); padding-left: 24px; margin: 30px 0; }
.quote-block p{ font-size:1.15rem; color: var(--text); font-style:normal; }
.quote-block cite{ font-family:var(--font-mono); font-size:0.8rem; color:var(--muted); font-style:normal; }

/* ---------- Forms ---------- */
.form-card{
  background: var(--white); border-radius: var(--radius); padding: 36px;
  border:1px solid var(--line); box-shadow: 0 30px 60px rgba(11,18,32,0.06);
}
.form-row{ margin-bottom: 18px; }
.form-row label{ display:block; font-size:0.82rem; font-weight:600; margin-bottom:7px; color: var(--text); }
.form-row input, .form-row select, .form-row textarea{
  width:100%; padding: 12px 14px; border-radius: var(--radius-sm); border:1px solid var(--line);
  font-family: var(--font-body); font-size:0.95rem; background: var(--paper); color: var(--text);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{ outline:none; border-color: var(--signal); background:var(--white); }
.form-grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:560px){ .form-grid-2{ grid-template-columns:1fr; } }
.form-note{ font-size:0.78rem; color: var(--muted-2); margin-top:10px; margin-bottom:0; }
.form-success{ display:none; text-align:center; padding: 30px 10px; }
.form-success.active{ display:block; }
.form-success svg{ margin: 0 auto 16px; }

/* ---------- Lead magnet banner ---------- */
.magnet-banner{
  background: linear-gradient(135deg, var(--ink) 0%, #16213A 100%);
  color:var(--white); border-radius: var(--radius); padding: 44px;
  display:grid; grid-template-columns: 1.4fr 1fr; gap: 34px; align-items:center;
}
@media (max-width:760px){ .magnet-banner{ grid-template-columns:1fr; } }

/* ---------- FAQ ---------- */
.faq-item{ border-top:1px solid var(--line); padding: 20px 0; }
.faq-item:last-child{ border-bottom:1px solid var(--line); }
.faq-q{ display:flex; justify-content:space-between; align-items:center; cursor:pointer; font-weight:600; gap:16px; }
.faq-q::after{ content:"+"; font-size:1.3rem; color: var(--signal); flex-shrink:0; transition: transform .2s ease; }
.faq-item.open .faq-q::after{ transform: rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition: max-height .25s ease; }
.faq-item.open .faq-a{ max-height: 400px; }
.faq-a p{ padding-top: 12px; margin-bottom:0; }

/* ---------- Blog ---------- */
.blog-card{ display:flex; flex-direction:column; gap:14px; }
.blog-card .meta{ font-family:var(--font-mono); font-size:0.75rem; color: var(--muted-2); }
.blog-hero-img{ width:100%; height:220px; object-fit:cover; border-radius: var(--radius); margin-bottom:18px; }
.blog-body{ max-width: 720px; margin: 0 auto; }
.blog-body h2{ margin-top: 1.6em; }
.blog-body h3{ margin-top: 1.3em; }
.blog-body ul{ list-style: disc; padding-left: 22px; margin-bottom:1.2em; }
.blog-body ul li{ margin-bottom:8px; color: var(--muted); }
.blog-body p{ color: var(--text); font-size:1.05rem; }
.blog-body .quote-block p{ color:var(--text); }
.tag-pill{ display:inline-block; font-family:var(--font-mono); font-size:0.72rem; background: var(--signal-soft); color: var(--signal-deep); padding:5px 12px; border-radius:20px; margin-right:8px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb{ font-size:0.82rem; color: var(--muted-2); margin-bottom: 20px; }
.breadcrumb a{ color: var(--signal); }

/* ---------- Table ---------- */
table.compare{ width:100%; border-collapse: collapse; margin: 20px 0; }
table.compare th, table.compare td{ text-align:left; padding: 12px 14px; border-bottom:1px solid var(--line); font-size:0.92rem; }
table.compare th{ font-family: var(--font-mono); font-size:0.75rem; text-transform:uppercase; color:var(--muted-2); letter-spacing:0.04em; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: rgba(255,255,255,0.6); padding: 60px 0 26px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 46px; }
@media (max-width:760px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
.footer-grid h4{ color:var(--white); font-size:0.85rem; font-family:var(--font-mono); text-transform:uppercase; letter-spacing:0.05em; margin-bottom:16px; }
.footer-grid ul li{ margin-bottom:10px; }
.footer-grid ul li a{ font-size:0.88rem; color: rgba(255,255,255,0.62); transition:color .15s ease; }
.footer-grid ul li a:hover{ color: var(--white); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px; padding-top: 26px; border-top:1px solid var(--line-dark); font-size:0.8rem; }

/* ---------- Utility ---------- */
.mt-0{ margin-top:0; } .mb-0{ margin-bottom:0; }
.text-center{ text-align:center; }
.reveal{ opacity:0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in{ opacity:1; transform:none; }