/* ==========================================================
   Case Studies page
   ========================================================== */

.cs-page { padding-bottom: 4rem; }

/* ---------- HERO ---------- */
.cs-hero {
  position: relative;
  padding: 4rem 0 3rem;
  overflow: hidden;
  background:
    radial-gradient(900px 400px at 8% -10%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 60%),
    radial-gradient(700px 400px at 100% 0%, color-mix(in srgb, var(--accent-2) 24%, transparent), transparent 60%);
}
.cs-hero .hero-bg { position: absolute; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.cs-hero .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: .35;
  animation: cs-orb-float 14s ease-in-out infinite;
}
.cs-hero .orb-1 { width: 380px; height: 380px; top: -120px; left: -80px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%); animation-delay: 0s; }
.cs-hero .orb-2 { width: 320px; height: 320px; top: 40px; right: -100px;
  background: radial-gradient(circle, var(--accent-2) 0%, transparent 70%); animation-delay: -4s; }
.cs-hero .orb-3 { width: 260px; height: 260px; bottom: -120px; left: 40%;
  background: radial-gradient(circle, var(--accent-3) 0%, transparent 70%); animation-delay: -8s; }
@keyframes cs-orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(20px, -30px) scale(1.08); }
}

.cs-hero .wrap { position: relative; z-index: 1; }
.cs-hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent-2);
  margin: 0 0 .75rem;
}
.cs-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  font-weight: 800;
  letter-spacing: -.02em;
}
.cs-hero h1 .grad {
  background: var(--accent-grad);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  padding-bottom: .12em;
  margin-bottom: -.12em;
}
.cs-hero .lede {
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 760px;
  margin: 0 0 2rem;
}

/* ---------- KPI strip ---------- */
.cs-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}
@media (max-width: 720px) { .cs-kpis { grid-template-columns: repeat(2, 1fr); } }
.cs-kpi {
  padding: 1.25rem 1rem;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  text-align: center;
}
.cs-kpi-value {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -.02em;
  background: var(--accent-grad);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  padding-bottom: .1em;
  line-height: 1.2;
}
.cs-kpi-label {
  font-size: .78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-top: .25rem;
}

/* ---------- Filters ---------- */
.cs-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.cs-filters .pill {
  padding: .5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  font: inherit;
  font-size: .88rem;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.cs-filters .pill:hover {
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  color: var(--text);
}
.cs-filters .pill.active {
  background: var(--accent-grad);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

/* ---------- STORIES GRID ---------- */
.cs-stories { padding: 2rem 0; }
.cs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.cs-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 12px 32px -16px color-mix(in srgb, var(--accent) 50%, transparent);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
  animation: cs-card-in .5s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes cs-card-in {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.cs-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow:
    0 1px 2px rgba(0,0,0,.04),
    0 24px 48px -20px color-mix(in srgb, var(--accent) 70%, transparent);
}

/* Card header — gradient banner */
.cs-card-header {
  position: relative;
  padding: 1.5rem 1.25rem 1.5rem 1.25rem;
  color: #fff;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  overflow: hidden;
}
.cs-card-header::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 110% -20%, rgba(255,255,255,.30), transparent 50%),
    radial-gradient(circle at -10% 110%, rgba(0,0,0,.18), transparent 55%);
  pointer-events: none;
}
.cs-card-mark {
  position: relative; z-index: 1;
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(255,255,255,.22);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.35);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: .02em;
  text-shadow: 0 1px 2px rgba(0,0,0,.25);
}
.cs-card-meta { position: relative; z-index: 1; min-width: 0; flex: 1; }
.cs-industry {
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 700;
  opacity: .9;
  margin-bottom: .15rem;
}
.cs-org {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.15;
}
.cs-meta-row {
  display: flex; flex-wrap: wrap; gap: .85rem;
  margin-top: .4rem;
  font-size: .8rem;
  opacity: .92;
}

/* Card body */
.cs-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 1;
}
.cs-pull {
  margin: 0;
  padding: 0 0 0 .85rem;
  border-left: 3px solid var(--accent);
  font-style: italic;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
}
.cs-summary {
  margin: 0;
  color: var(--text-soft);
  font-size: .92rem;
  line-height: 1.55;
}

/* Metrics strip */
.cs-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .5rem;
  padding: .85rem .5rem;
  border-radius: 12px;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--accent) 7%, var(--bg-alt)),
    var(--bg-alt));
  border: 1px solid var(--border);
}
.cs-metric { text-align: center; padding: 0 .35rem; }
.cs-metric + .cs-metric { border-left: 1px solid var(--border); }
.cs-metric-value {
  font-weight: 800;
  font-size: clamp(.95rem, 1.4vw, 1.15rem);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  padding-bottom: .1em;
}
.cs-metric-label {
  font-size: .68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .03em;
  margin-top: .25rem;
  line-height: 1.25;
}

/* Tags */
.cs-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.cs-tag {
  font-size: .7rem;
  padding: .25rem .6rem;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-soft);
}

/* CTA link */
.cs-cta-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  align-self: flex-start;
  padding: .6rem 1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: .9rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  text-decoration: none;
  transition: background .15s, transform .15s, gap .15s;
}
.cs-cta-link:hover {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  gap: .65rem;
}

/* ---------- Bottom CTA ---------- */
.cs-cta { padding: 3rem 0 1rem; }
.cs-cta-card {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: 1.25rem;
  padding: 2rem;
  border-radius: 18px;
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--accent) 12%, var(--surface)),
      color-mix(in srgb, var(--accent-2) 12%, var(--surface)));
  border: 1px solid var(--border);
}
.cs-cta-card h2 { margin: 0 0 .35rem; font-size: 1.5rem; }
.cs-cta-card p  { margin: 0; color: var(--text-soft); max-width: 60ch; }