/* =========================================================
   CASE STUDY V2 — shared editorial layout (cs2-*)
   Used by portfolio case studies rewritten in 2026.
   Distinct from ha-* / usa-* : split masthead, sticky
   problem rail, vertical solution timeline, benefit lines.
   ========================================================= */

/* Layout overrides */
.pdf-hero { padding: var(--space-xl) 0 var(--space-sm); }
section.pdf-content { padding: var(--space-sm) 0 var(--space-xl); }
.pdf-content .container-narrow { max-width: 1120px; }

.cs2 { margin-bottom: var(--space-xl); }
.cs2:last-child { margin-bottom: 0; }

.cs2-eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: 0.76rem; font-weight: 700; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--color-purple);
}
.cs2-eyebrow::before {
  content: ""; width: 26px; height: 2px; border-radius: var(--radius-full);
  background: var(--gradient-brand-primary);
}
.cs2-title {
  font-size: clamp(1.7rem, 3.4vw, 2.45rem); font-weight: 800;
  line-height: 1.12; letter-spacing: -0.02em;
  color: var(--color-gray-900); margin: 0.55rem 0 0.8rem;
}
.cs2-lede {
  font-size: clamp(1.02rem, 1.5vw, 1.16rem); line-height: 1.8;
  color: var(--color-text-muted);
}
.cs2-sub {
  font-size: 1rem; line-height: 1.75; color: var(--color-text-muted); margin: 0;
}

/* ── Masthead: split header ── */
.cs2-masthead {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 1.75rem;
  margin-bottom: 2.5rem; align-items: stretch;
}
.cs2-masthead-copy {
  background: var(--surface); border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl); padding: 2.4rem 2.4rem 2.2rem;
  box-shadow: var(--shadow-soft); position: relative; overflow: hidden;
}
.cs2-masthead-copy::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--gradient-brand-primary);
}
.cs2-pills { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1.4rem; }
.cs2-pill {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.02em;
  padding: 0.42rem 0.95rem; border-radius: var(--radius-full);
  background: var(--surface-soft); color: var(--color-purple-deep);
  border: 1px solid rgba(79,46,222,0.18);
}
.cs2-pill--dark { background: var(--color-purple-darkest); color: #fff !important; border-color: transparent; }
.cs2-pill--upwork { background: #14a800; color: #fff !important; border-color: transparent; }
.cs2-pill--staff { background: var(--color-mint-soft); color: var(--color-purple-darkest); border-color: transparent; }

.cs2-facts {
  background: var(--gradient-brand-deep); color: #fff;
  border-radius: var(--radius-xl); padding: 1.9rem 1.9rem 1.6rem;
  display: flex; flex-direction: column; gap: 0; position: relative; overflow: hidden;
}
.cs2-facts::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 12%, rgba(124,250,195,0.18), transparent 42%);
  pointer-events: none;
}
.cs2-fact { position: relative; padding: 0.8rem 0; border-bottom: 1px solid rgba(255,255,255,0.14); }
.cs2-fact:last-child { border-bottom: none; }
.cs2-fact-label {
  display: block; font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.62); margin-bottom: 0.25rem;
}
.cs2-fact-value { display: block; font-size: 0.98rem; font-weight: 700; line-height: 1.5; color: #fff; }

/* Variant covers: rotate hue without leaving brand system */
.cs2--b .cs2-masthead-copy::after { background: linear-gradient(135deg, var(--color-purple-deep), var(--color-mint)); }
.cs2--b .cs2-facts { background: linear-gradient(135deg, #1d2b53 0%, #2d1a7f 100%); }
.cs2--c .cs2-masthead { grid-template-columns: 1fr 1.5fr; }
.cs2--c .cs2-masthead-copy { order: 2; }
.cs2--c .cs2-facts { order: 1; background: var(--surface); color: var(--color-gray-900); border: 1px solid var(--color-gray-200); box-shadow: var(--shadow-soft); }
.cs2--c .cs2-facts::before { display: none; }
.cs2--c .cs2-fact { border-bottom-color: var(--color-gray-200); }
.cs2--c .cs2-fact-label { color: var(--color-text-soft); }
.cs2--c .cs2-fact-value { color: var(--color-gray-900); }
.cs2--d .cs2-facts { background: linear-gradient(135deg, #232323 0%, #2d1a7f 100%); }

/* ── Problem: sticky rail + symptom cards ── */
.cs2-problem {
  display: grid; grid-template-columns: 0.9fr 1.4fr; gap: 2rem;
  background: var(--surface-soft); border: 1px solid rgba(79,46,222,0.14);
  border-radius: var(--radius-xl); padding: 2.5rem;
}
.cs2-problem-rail h2 { margin-bottom: 0.7rem; }
.cs2-problem-rail .cs2-lede { font-size: 1.02rem; }
.cs2-match {
  margin-top: 1.2rem; padding: 1rem 1.1rem; background: #fff;
  border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg);
  font-size: 0.9rem; line-height: 1.65; color: var(--color-gray-700);
}
.cs2-match strong { color: var(--color-purple-deep); }
.cs2-symptoms { display: grid; gap: 0.9rem; }
.cs2-symptom {
  display: flex; gap: 0.85rem; align-items: flex-start;
  background: #fff; border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg); padding: 1.1rem 1.2rem;
}
.cs2-symptom-mark {
  flex: 0 0 auto; width: 30px; height: 30px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-purple); color: #fff !important;
  font-weight: 800; font-size: 0.85rem;
}
.cs2-symptom p { margin: 0; font-size: 0.95rem; line-height: 1.65; color: var(--color-gray-700); }

/* ── Solution timeline ── */
.cs2-sol-intro { max-width: 60em; }
.cs2-steps { display: grid; gap: 1.1rem; margin-top: 1.8rem; }
.cs2-step {
  display: grid; grid-template-columns: 64px 1fr; gap: 1.3rem;
  background: var(--surface); border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg); padding: 1.5rem 1.6rem;
  box-shadow: var(--shadow-soft);
}
.cs2-step-num {
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.1em;
  color: var(--color-text-soft);
}
.cs2-step-num span {
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: var(--radius-md);
  background: var(--surface-soft); color: var(--color-purple);
  font-size: 1rem; letter-spacing: 0; margin-top: 0.4rem;
}
.cs2-step h3 { font-size: 1.08rem; font-weight: 800; color: var(--color-gray-900); margin-bottom: 0.4rem; }
.cs2-step p { font-size: 0.95rem; line-height: 1.7; color: var(--color-text-muted); margin: 0 0 0.6rem; }
.cs2-why {
  border-left: 3px solid var(--color-mint); padding-left: 0.9rem;
  font-size: 0.9rem; line-height: 1.65; color: var(--color-gray-700);
  background: var(--surface-mint); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding-top: 0.6rem; padding-bottom: 0.6rem; padding-right: 0.9rem;
}
.cs2-why strong { color: var(--color-purple-deep); }

/* Alternate solution presentation for variant c/d: two-col cards */
.cs2--c .cs2-steps, .cs2--d .cs2-steps { grid-template-columns: 1fr 1fr; }
.cs2--c .cs2-step, .cs2--d .cs2-step { grid-template-columns: 1fr; gap: 0.6rem; }
.cs2--c .cs2-step-num span, .cs2--d .cs2-step-num span { margin-top: 0.6rem; }

/* ── Stack + engagement ── */
.cs2-two { display: grid; grid-template-columns: 1.3fr 1fr; gap: 1.5rem; margin-top: 1.5rem; }
.cs2-stack-card, .cs2-engage-card {
  background: var(--surface); border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg); padding: 1.6rem; box-shadow: var(--shadow-soft);
}
.cs2-stack-card h3, .cs2-engage-card h3 { font-size: 1rem; font-weight: 800; margin-bottom: 0.9rem; }
.cs2-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.cs2-tag {
  font-size: 0.8rem; font-weight: 700; padding: 0.38rem 0.85rem;
  border-radius: var(--radius-full); background: var(--surface-soft);
  color: var(--color-purple-deep); border: 1px solid rgba(79,46,222,0.14);
}
.cs2-engage-list { display: grid; gap: 0.7rem; }
.cs2-engage-row { display: flex; justify-content: space-between; gap: 1rem; font-size: 0.9rem; padding-bottom: 0.7rem; border-bottom: 1px dashed var(--color-gray-200); }
.cs2-engage-row:last-child { border-bottom: none; padding-bottom: 0; }
.cs2-engage-row dt { color: var(--color-text-soft); font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; }
.cs2-engage-row dd { margin: 0; font-weight: 700; color: var(--color-gray-900); text-align: right; }

/* ── Outcome + CTA ── */
.cs2-outcome {
  background: var(--gradient-brand-primary); color: #fff;
  border-radius: var(--radius-xl); padding: 2.6rem 2.4rem; position: relative; overflow: hidden;
}
.cs2-outcome::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 88% 10%, rgba(124,250,195,0.22), transparent 40%);
  pointer-events: none;
}
.cs2-outcome h2 { color: #fff; }
.cs2-outcome p { position: relative; color: rgba(255,255,255,0.88); line-height: 1.8; margin: 0 0 0.9rem; max-width: 62em; }
.cs2-cta {
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl); padding: 1.8rem 2rem; box-shadow: var(--shadow-soft);
}
.cs2-cta h3 { margin: 0 0 0.3rem; font-size: 1.25rem; }
.cs2-cta p { margin: 0; color: var(--color-text-muted); font-size: 0.95rem; }

/* Purple buttons: white text forced with !important (site-wide issue) */
.cs2-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0.85rem 2rem; border-radius: 999px;
  font-weight: 700; font-size: 0.95rem; text-decoration: none;
  border: 1px solid transparent; white-space: nowrap;
}
.cs2-btn--primary {
  background: var(--color-purple) !important;
  color: #ffffff !important;
  border-color: var(--color-purple) !important;
}
.cs2-btn--primary:hover {
  background: var(--color-purple-vibrant) !important;
  color: #ffffff !important;
}
.cs2-btn--primary:visited { color: #ffffff !important; }
.cs2-btn--outline {
  background: transparent !important; border-color: var(--color-purple) !important;
  color: var(--color-purple) !important;
}
.cs2-btn--outline:hover { background: var(--color-purple) !important; color: #ffffff !important; }

/* Global safety: any purple button keeps white text */
.btn-primary {
  background: var(--color-purple, #4F2EDE) !important;
  color: #ffffff !important;
}
.btn-primary:hover, .btn-primary:visited { color: #ffffff !important; }

/* ── Related work with same client ── */
.cs2-related {
  background: var(--surface); border: 1px solid rgba(79,46,222,0.16);
  border-radius: var(--radius-xl); padding: 2.4rem 2.4rem 2.1rem;
  box-shadow: var(--shadow-soft); position: relative; overflow: hidden;
}
.cs2-related::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--gradient-brand-primary);
}
.cs2-related-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.6rem;
}
.cs2-related--3 .cs2-related-grid { grid-template-columns: 1fr 1fr 1fr; }
.cs2-related-card {
  display: block; background: var(--surface-soft);
  border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg);
  padding: 1.3rem 1.3rem 1.15rem; text-decoration: none;
}
.cs2-related-card:hover { border-color: var(--color-purple); background: #fff; }
.cs2-related-card strong {
  display: block; font-size: 1rem; font-weight: 800;
  color: var(--color-gray-900); margin-bottom: 0.3rem;
}
.cs2-related-card span {
  display: block; font-size: 0.88rem; line-height: 1.6; color: var(--color-text-muted);
}
.cs2-related-card em {
  display: inline-block; margin-top: 0.6rem; font-style: normal;
  font-size: 0.85rem; font-weight: 800; color: var(--color-purple);
}
.cs2-related-more {
  margin: 1.3rem 0 0; font-size: 0.92rem; line-height: 1.7; color: var(--color-text-muted);
}
.cs2-related-more a { color: var(--color-purple); font-weight: 700; }

@media (max-width: 940px) {
  .cs2-related { padding: 1.8rem; }
  .cs2-related-grid, .cs2-related--3 .cs2-related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 940px) {
  .cs2-masthead, .cs2--c .cs2-masthead { grid-template-columns: 1fr; }
  .cs2-masthead-copy { order: 1; }
  .cs2-facts { order: 2; }
  .cs2-problem { grid-template-columns: 1fr; padding: 1.8rem; }
  .cs2-two { grid-template-columns: 1fr; }
  .cs2--c .cs2-steps, .cs2--d .cs2-steps { grid-template-columns: 1fr; }
  .cs2-cta { flex-direction: column; align-items: flex-start; }
}