/* =========================================================
   HBTN Media — case study pages (builds on styles.css)
   ========================================================= */
.cs-page { background: radial-gradient(1200px 700px at 85% -10%, rgba(27, 106, 224, .35), transparent 60%), var(--bg); }

/* Hero */
.cs-hero { position: relative; padding: calc(var(--header-h) + 56px) 0 40px; overflow: hidden; }
.cs-hero__glow {
  position: absolute; inset: -30% -10% auto; height: 700px; pointer-events: none;
  background: radial-gradient(500px 340px at 15% 20%, rgba(141, 185, 255, .14), transparent 70%);
}
.cs-crumbs { position: relative; display: flex; gap: 10px; align-items: center; font-size: 14px; color: var(--muted); margin-bottom: 28px; }
.cs-crumbs a { color: var(--hl); }
.cs-crumbs a:hover { color: var(--white); }
.cs-hero__grid { position: relative; display: grid; grid-template-columns: 1.5fr 1fr; gap: 56px; align-items: start; }
.cs-hero__icon { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: rgba(141, 185, 255, .14); margin-right: 4px; }
.cs-hero__icon svg { width: 16px; height: 16px; }
.cs-title { font-size: clamp(34px, 4.4vw, 58px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; }
.cs-lede { color: var(--muted); font-size: 19px; margin-top: 22px; max-width: 640px; }

.cs-facts { background: rgba(7, 42, 102, .7); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 24px; }
.cs-facts dl { margin: 0; }
.cs-facts div { padding: 16px 0; border-bottom: 1px solid var(--border); }
.cs-facts div:last-child { border-bottom: 0; }
.cs-facts dt { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--hl); margin-bottom: 4px; }
.cs-facts dd { margin: 0; font-weight: 500; }
.cs-facts small { color: var(--muted); font-weight: 400; }

.cs-metrics { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
.cs-metric {
  padding: 26px 28px; border-radius: var(--radius); border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(2, 74, 172, .55), rgba(7, 42, 102, .5));
}
.cs-metric b { display: block; font-family: var(--font-head); font-size: clamp(34px, 4vw, 48px); letter-spacing: -0.03em; line-height: 1.1; }
.cs-metric span { color: var(--muted); }

/* Sections */
.cs-section { padding: 56px 0; }
.cs-section--tight { padding-top: 16px; }
.cs-cols { display: grid; grid-template-columns: 1fr 2fr; gap: 56px; align-items: start; border-top: 1px solid var(--border); padding-top: 48px; }
.cs-cols__label h2 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 700; }
.cs-cols__label .eyebrow { margin-bottom: 10px; }
.cs-prose { font-size: 19px; line-height: 1.7; color: #dbe7fb; }

/* NDA visual: stands in for client work we can't show */
.nda { margin: 0; }
.nda__frame { position: relative; border-radius: 24px; overflow: hidden; padding: 28px; border: 1px solid rgba(255, 255, 255, .15); min-height: 340px; }
.nda__frame::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px); background-size: 16px 16px;
}
.nda__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; filter: blur(5px); opacity: .55; }
.nda__tile { height: 140px; border-radius: 14px; background: rgba(255, 255, 255, .18); padding: 16px; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px; }
.nda__tile span { display: block; height: 10px; border-radius: 6px; background: rgba(255, 255, 255, .55); }
.nda__tile span + span { width: 60%; opacity: .7; }
.nda__tile--2, .nda__tile--4 { background: rgba(1, 18, 50, .35); }
.nda__badge {
  position: absolute; z-index: 2; left: 50%; top: 50%; translate: -50% -50%; display: flex; align-items: center; gap: 14px;
  padding: 16px 22px; border-radius: 16px; background: rgba(2, 22, 63, .88); border: 1px solid rgba(255, 255, 255, .25);
  box-shadow: 0 30px 60px -20px rgba(0, 5, 25, .8); white-space: nowrap;
}
.nda__badge svg { width: 34px; height: 34px; color: var(--white); flex-shrink: 0; }
.nda__badge b { display: block; font-family: var(--font-head); font-size: 18px; }
.nda__badge span { color: var(--muted); font-size: 14px; }
.nda figcaption { color: var(--muted); font-size: 14px; margin-top: 14px; text-align: center; }

/* Steps */
.cs-steps { display: grid; gap: 16px; counter-reset: none; }
.cs-step { display: grid; grid-template-columns: auto 1fr; gap: 20px; padding: 24px; border-radius: var(--radius); border: 1px solid var(--border); background: rgba(7, 42, 102, .55); }
.cs-step__num {
  font-family: var(--font-head); font-size: 32px; font-weight: 700; line-height: 1;
  background: linear-gradient(180deg, var(--white), var(--sky)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cs-step h3 { font-size: 20px; margin-bottom: 6px; }
.cs-step p { color: var(--muted); }

/* Scope */
.cs-scope { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cs-card { padding: 24px; border-radius: var(--radius); border: 1px solid var(--border); background: rgba(7, 42, 102, .55); }
.cs-card h3 { font-size: 18px; margin-bottom: 16px; }
.cs-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.cs-tags li { padding: 7px 14px; border-radius: 999px; background: var(--surface-2); color: #dbe7fb; font-size: 14px; }
.cs-tags--tools li { background: rgba(255, 255, 255, .08); border: 1px solid var(--border); }

/* Results */
.cs-results { display: grid; gap: 12px; }
.cs-results li {
  position: relative; padding: 18px 20px 18px 56px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: rgba(7, 42, 102, .55); font-size: 17px; font-weight: 500;
}
.cs-results li::before {
  content: ""; position: absolute; left: 18px; top: 50%; translate: 0 -50%; width: 24px; height: 24px; border-radius: 50%;
  background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23024aac' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center / 14px no-repeat;
}

/* CTA */
.cs-cta {
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; padding: 44px;
  border-radius: 28px; background: linear-gradient(135deg, var(--brand), #012a66); border: 1px solid rgba(255, 255, 255, .2);
}
.cs-cta h2 { font-size: clamp(26px, 3vw, 36px); }
.cs-cta p { color: #d7e5ff; margin-top: 10px; }
.cs-cta__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }

/* Prev / next */
.cs-pager { padding-top: 8px; padding-bottom: 80px; }
.cs-pager__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cs-pager__link {
  display: grid; gap: 4px; padding: 24px; border-radius: var(--radius); border: 1px solid var(--border);
  background: rgba(7, 42, 102, .55); transition: border-color .3s, transform .3s var(--ease);
}
.cs-pager__link:hover { border-color: rgba(141, 185, 255, .5); transform: translateY(-3px); }
.cs-pager__link small { color: var(--hl); font-weight: 600; letter-spacing: .06em; }
.cs-pager__link b { font-family: var(--font-head); font-size: 22px; }
.cs-pager__link span { color: var(--muted); font-size: 14px; }
.cs-pager__link--next { text-align: right; }

/* Responsive */
@media (max-width: 900px) {
  .cs-hero__grid, .cs-cols, .cs-cta { grid-template-columns: 1fr; gap: 28px; }
  .cs-cta__actions { justify-content: flex-start; }
}
@media (max-width: 640px) {
  .cs-hero { padding-top: calc(var(--header-h) + 28px); }
  .cs-lede, .cs-prose { font-size: 17px; }
  .cs-metrics { grid-template-columns: 1fr; gap: 12px; margin-top: 32px; }
  .cs-metric { padding: 20px 22px; display: flex; align-items: baseline; gap: 12px; }
  .cs-metric b { font-size: 32px; }
  .cs-section { padding: 36px 0; }
  .cs-cols { padding-top: 32px; }
  .nda__frame { padding: 16px; min-height: 260px; }
  .nda__grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .nda__tile { height: 100px; }
  .nda__tile--5, .nda__tile--6 { display: none; }
  .nda__badge { white-space: normal; width: calc(100% - 32px); padding: 14px 16px; }
  .nda__badge b { font-size: 16px; }
  .cs-step { padding: 20px; gap: 14px; }
  .cs-step__num { font-size: 26px; }
  .cs-scope { grid-template-columns: 1fr; }
  .cs-cta { padding: 28px 22px; }
  .cs-cta__actions .btn { flex: 1 1 100%; }
  .cs-pager__grid { grid-template-columns: 1fr; }
  .cs-pager__link--next { text-align: left; }
}