/* WinBD68 Bangladesh - Design DNA: gtc6
   Layout: stacked-bands | Nav: left-rail | Card: flat-tinted (10px radius, no border, no shadow)
   Hero: quiz-wizard-entry | Motion: static | Density: airy | Footer: minimal-one-row
*/
:root {
  --gtc6-bg: #F4F2F5;
  --gtc6-surface: #FFFFFF;
  --gtc6-tint: #ECE8EF;
  --gtc6-tint-strong: #E1DAE6;
  --gtc6-ink: #1F0F29;
  --gtc6-muted: #52405E;
  --gtc6-accent: #616D08;
  --gtc6-accent-hover: #4D5705;
  --gtc6-accent2: #119C21;
  --gtc6-accent2-tint: #E4F5E6;
  --gtc6-on-accent: #FFFFFF;
  --gtc6-font-head: 'Barlow Condensed', 'Trebuchet MS', sans-serif;
  --gtc6-font-body: 'Barlow', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --gtc6-radius: 10px;
  --gtc6-rail-w: 264px;
}

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: auto; }
body {
  margin: 0;
  background-color: var(--gtc6-bg);
  color: var(--gtc6-ink);
  font-family: 'Barlow', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, .gtc6-head-font {
  font-family: 'Barlow Condensed', 'Trebuchet MS', sans-serif;
  color: var(--gtc6-ink);
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin: 0 0 0.75rem;
}
h1 { font-size: clamp(2.1rem, 3.6vw, 3.05rem); font-weight: 800; }
h2 { font-size: clamp(1.55rem, 2.5vw, 2.05rem); font-weight: 700; margin-top: 0.5rem; }
h3 { font-size: 1.3rem; font-weight: 700; }
p { margin: 0 0 1.05rem; }
a { color: var(--gtc6-accent); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--gtc6-ink); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--gtc6-radius); }
ul, ol { margin: 0 0 1.15rem; padding-left: 1.35rem; }
li { margin-bottom: 0.45rem; }

/* App Shell with Left Rail */
.gtc6-shell {
  display: flex;
  min-height: 100vh;
}
.gtc6-rail {
  width: var(--gtc6-rail-w);
  flex: 0 0 var(--gtc6-rail-w);
  background: var(--gtc6-ink);
  color: var(--gtc6-surface);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 1.4rem 1.15rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.gtc6-rail a { color: var(--gtc6-surface); text-decoration: none; }
.gtc6-brand-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.9rem;
}
.gtc6-brand-box img { border-radius: 8px; flex-shrink: 0; background: var(--gtc6-surface); padding: 2px; }
.gtc6-brand-title { font-family: 'Barlow Condensed', sans-serif; font-size: 1.35rem; font-weight: 800; line-height: 1.05; display: block; }
.gtc6-brand-sub { font-size: 0.78rem; color: #C9BBD3; display: block; }

.gtc6-rail-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.gtc6-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.68rem 1rem;
  border-radius: var(--gtc6-radius);
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  cursor: pointer;
  border: 0;
}
.gtc6-btn--primary { background: var(--gtc6-accent); color: var(--gtc6-on-accent); }
.gtc6-btn--primary:hover { background: var(--gtc6-accent-hover); color: var(--gtc6-on-accent); }
.gtc6-btn--go { background: var(--gtc6-accent2); color: #FFFFFF; }
.gtc6-btn--go:hover { background: #0C7A19; color: #FFFFFF; }
.gtc6-btn--light { background: var(--gtc6-tint); color: var(--gtc6-ink); }
.gtc6-btn--light:hover { background: var(--gtc6-tint-strong); color: var(--gtc6-ink); }
.gtc6-rail-actions .gtc6-btn { font-size: 0.85rem; padding: 0.55rem 0.6rem; }

.gtc6-rail-nav { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.25rem; }
.gtc6-rail-nav a {
  display: block;
  padding: 0.52rem 0.75rem;
  border-radius: var(--gtc6-radius);
  font-size: 0.94rem;
  font-weight: 600;
  color: #EAE4EE;
}
.gtc6-rail-nav a:hover, .gtc6-rail-nav a[aria-current="page"] {
  background: var(--gtc6-accent);
  color: #FFFFFF;
}
.gtc6-rail-badge {
  margin-top: auto;
  background: #2C183A;
  border-radius: var(--gtc6-radius);
  padding: 0.8rem;
  font-size: 0.8rem;
  color: #DFD5E6;
}

/* Mobile Header */
.gtc6-mbar {
  display: none;
  background: var(--gtc6-ink);
  color: #FFFFFF;
  padding: 0.7rem 1rem;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 40;
}
.gtc6-mbar a { color: #FFFFFF; text-decoration: none; }
.gtc6-mbar-left { display: flex; align-items: center; gap: 0.55rem; }
.gtc6-mbar-toggle {
  background: #331B44;
  color: #FFFFFF;
  border: 0;
  border-radius: 8px;
  padding: 0.45rem 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

/* Content Column & Stacked Full-Bleed Bands */
.gtc6-workspace { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }
.gtc6-main { flex: 1 0 auto; }

.gtc6-band { padding: 2.6rem 0; background: var(--gtc6-bg); }
.gtc6-band--paper { background: var(--gtc6-surface); }
.gtc6-band--tint { background: var(--gtc6-tint); }
.gtc6-band--ink { background: var(--gtc6-ink); color: var(--gtc6-surface); }
.gtc6-band--ink h1, .gtc6-band--ink h2, .gtc6-band--ink h3 { color: #FFFFFF; }
.gtc6-band--ink a { color: #D7E84A; }

.gtc6-wrap { width: min(1060px, 92%); margin: 0 auto; }

/* Breadcrumbs */
.gtc6-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.86rem;
  color: var(--gtc6-muted);
  margin-bottom: 1.1rem;
}
.gtc6-band--ink .gtc6-crumbs { color: #D5C8DE; }
.gtc6-crumbs a { text-decoration: none; font-weight: 600; }

/* Split CTA with Label */
.gtc6-split-cta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  background: var(--gtc6-tint);
  padding: 0.55rem 0.65rem 0.55rem 1rem;
  border-radius: var(--gtc6-radius);
  margin: 0.9rem 0;
}
.gtc6-band--ink .gtc6-split-cta { background: #2D183C; color: #FFFFFF; }
.gtc6-split-label { font-size: 0.88rem; font-weight: 700; }
.gtc6-split-btns { display: inline-flex; gap: 0.45rem; flex-wrap: wrap; }

/* Hero Layout & Quiz Wizard Entry */
.gtc6-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.8rem;
  align-items: start;
}
.gtc6-kicker {
  display: inline-block;
  background: var(--gtc6-accent2-tint);
  color: #095C13;
  font-weight: 800;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  margin-bottom: 0.75rem;
}
.gtc6-band--ink .gtc6-kicker { background: #224417; color: #B8F29A; }

/* Flat-Tinted Cards (10px radius, zero border, zero shadow) */
.gtc6-card {
  background: var(--gtc6-tint);
  border-radius: var(--gtc6-radius);
  padding: 1.35rem;
  border: none;
  box-shadow: none;
}
.gtc6-band--tint .gtc6-card, .gtc6-band--bg .gtc6-card { background: var(--gtc6-surface); }
.gtc6-band--ink .gtc6-card { background: #2B1739; color: #F4F2F5; }
.gtc6-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.15rem; }
.gtc6-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.15rem; }

/* Editorial Callouts & Answer Capsules */
.gtc6-expert {
  background: var(--gtc6-accent2-tint);
  color: var(--gtc6-ink);
  border-radius: var(--gtc6-radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.1rem;
  font-size: 0.95rem;
}
.gtc6-tldr {
  background: var(--gtc6-tint);
  border-radius: var(--gtc6-radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.25rem;
}
.gtc6-capsule {
  background: var(--gtc6-tint);
  border-left: 4px solid var(--gtc6-accent);
  border-radius: 0 var(--gtc6-radius) var(--gtc6-radius) 0;
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.gtc6-band--paper .gtc6-capsule { background: var(--gtc6-bg); }

.gtc6-callout {
  background: var(--gtc6-tint);
  border-radius: var(--gtc6-radius);
  padding: 1rem 1.2rem;
  margin: 0.8rem 0;
}
.gtc6-callout--fact { background: var(--gtc6-accent2-tint); }
.gtc6-formula {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--gtc6-ink);
  background: var(--gtc6-tint);
  padding: 0.85rem 1.1rem;
  border-radius: var(--gtc6-radius);
  margin: 0.85rem 0;
}

/* Tables */
.gtc6-table-wrap { overflow-x: auto; margin: 1rem 0; border-radius: var(--gtc6-radius); }
.gtc6-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--gtc6-surface);
  font-size: 0.95rem;
}
.gtc6-table th, .gtc6-table td {
  text-align: left;
  padding: 0.8rem 0.95rem;
  vertical-align: top;
}
.gtc6-table thead th {
  background: var(--gtc6-ink);
  color: #FFFFFF;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.gtc6-table tbody tr:nth-child(even) td { background: var(--gtc6-bg); }

/* Pitfall & Step Cards */
.gtc6-pitfall-grid, .gtc6-steps-grid, .gtc6-faq-list {
  display: grid;
  gap: 0.9rem;
  margin: 1rem 0;
}
.gtc6-pitfall-card, .gtc6-step-card, .gtc6-faq-item {
  background: var(--gtc6-tint);
  border-radius: var(--gtc6-radius);
  padding: 1.05rem 1.2rem;
}
.gtc6-band--tint .gtc6-pitfall-card,
.gtc6-band--tint .gtc6-step-card,
.gtc6-band--tint .gtc6-faq-item { background: var(--gtc6-surface); }
.gtc6-step-num {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  background: var(--gtc6-ink);
  color: #FFFFFF;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  margin-bottom: 0.45rem;
}

/* Safe Box 21+ */
.gtc6-rg-box {
  background: var(--gtc6-tint);
  border-radius: var(--gtc6-radius);
  padding: 1.2rem;
}

/* Interactive Widgets (Quiz Wizard, Calculator, Sitemap) */
.gtc6-wizard {
  background: #2C183A;
  color: #FFFFFF;
  border-radius: var(--gtc6-radius);
  padding: 1.35rem;
}
.gtc6-wizard h2, .gtc6-wizard h3 { color: #FFFFFF; }
.gtc6-wiz-opt {
  display: block;
  width: 100%;
  text-align: left;
  background: #3D2450;
  color: #FFFFFF;
  border: 0;
  border-radius: 8px;
  padding: 0.72rem 0.95rem;
  margin-bottom: 0.55rem;
  font-weight: 600;
  cursor: pointer;
}
.gtc6-wiz-opt:hover, .gtc6-wiz-opt.is-picked { background: var(--gtc6-accent); }
.gtc6-wiz-res {
  background: #1B0D25;
  padding: 1rem;
  border-radius: 8px;
  margin-top: 0.85rem;
}

.gtc6-calc-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.95rem; }
.gtc6-field label { display: block; font-weight: 700; font-size: 0.88rem; margin-bottom: 0.3rem; }
.gtc6-field input, .gtc6-field select {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border-radius: 8px;
  border: 0;
  background: var(--gtc6-surface);
  color: var(--gtc6-ink);
  font: inherit;
}

/* Author Bar */
.gtc6-author-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--gtc6-tint);
  border-radius: var(--gtc6-radius);
  padding: 1rem 1.2rem;
  margin: 1rem 0;
}
.gtc6-author-bar img { border-radius: 50%; object-fit: cover; flex-shrink: 0; }

/* Cross Links */
.gtc6-link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}
.gtc6-link-pill {
  display: block;
  background: var(--gtc6-tint);
  padding: 0.7rem 0.9rem;
  border-radius: var(--gtc6-radius);
  text-decoration: none;
  font-size: 0.92rem;
}
.gtc6-link-pill:hover { background: var(--gtc6-tint-strong); }

/* Minimal One-Row Footer */
.gtc6-footer {
  background: var(--gtc6-ink);
  color: #DFD6E6;
  padding: 1.25rem 0;
  font-size: 0.86rem;
}
.gtc6-footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.25rem;
}
.gtc6-footer-links { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.gtc6-footer a { color: #FFFFFF; text-decoration: none; font-weight: 600; }
.gtc6-footer a:hover { text-decoration: underline; }

/* Mobile Sticky Bottom Bar */
.gtc6-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 45;
  background: var(--gtc6-ink);
  padding: 0.55rem 0.8rem;
  gap: 0.5rem;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 980px) {
  .gtc6-shell { display: block; }
  .gtc6-mbar { display: flex; }
  .gtc6-rail {
    display: none;
    position: fixed;
    left: 0; top: 52px; bottom: 56px;
    z-index: 50;
    height: auto;
    width: min(290px, 85vw);
  }
  .gtc6-rail.is-open { display: flex; }
  .gtc6-hero-grid, .gtc6-grid-2, .gtc6-grid-3, .gtc6-link-grid, .gtc6-calc-form {
    grid-template-columns: 1fr;
  }
  .gtc6-mobile-cta { display: grid; }
  body { padding-bottom: 58px; }
}