/* ==========================================================================
   Helpneer — Case study components
   Depends on css/styles.css (theme tokens, utilities, header/footer).
   ========================================================================== */

/* ---------- Hero ---------- */
.cs-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(60rem 30rem at 85% -10%, color-mix(in oklab, var(--primary) 16%, transparent), transparent 70%),
    radial-gradient(50rem 26rem at 0% 110%, color-mix(in oklab, var(--accent) 12%, transparent), transparent 70%),
    var(--paper);
}

.cs-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid color-mix(in oklab, var(--primary) 35%, var(--border));
  border-radius: 999px;
  background: color-mix(in oklab, var(--primary) 10%, var(--paper));
  color: color-mix(in oklab, var(--primary) 78%, var(--foreground));
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cs-eyebrow::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--primary);
}

.cs-lede {
  margin-top: 1.25rem;
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--muted-foreground);
}

@media (min-width: 768px) {
  .cs-lede { font-size: 1.25rem; }
}

/* ---------- Meta chips under the hero ---------- */
.cs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}

.cs-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--paper);
  font-size: 0.8125rem;
  color: var(--foreground);
}

.cs-chip span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

/* ---------- At a glance ---------- */
.glance-grid {
  display: grid;
  gap: 1px;
  margin-top: 3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--border);
  overflow: hidden;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) { .glance-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .glance-grid { grid-template-columns: repeat(3, 1fr); } }

.glance-cell {
  background: var(--paper);
  padding: 1.5rem;
}

.glance-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

.glance-value {
  margin-top: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
}

/* ---------- Bullet list with primary markers ---------- */
.cs-list {
  margin-top: 1.75rem;
  display: grid;
  gap: 0.85rem;
}

.cs-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--muted-foreground);
  line-height: 1.65;
}

.cs-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--primary);
}

/* ---------- Pull / question block ---------- */
.cs-pull {
  margin-top: 2rem;
  padding: 1.5rem 1.75rem;
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: color-mix(in oklab, var(--primary) 6%, var(--paper));
}

.cs-pull p {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
}

.cs-pull p + p {
  margin-top: 0.6rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted-foreground);
}

/* ---------- Flow chain ---------- */
.cs-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.75rem;
}

.cs-flow-step {
  padding: 0.4rem 0.85rem;
  border: 1px solid color-mix(in oklab, var(--primary) 28%, var(--border));
  border-radius: var(--radius-md);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--foreground);
  white-space: nowrap;
}

.cs-flow-arrow {
  color: var(--primary);
  font-size: 0.9rem;
  line-height: 1;
}

/* ---------- Numbered solution cards ---------- */
.cs-steps {
  display: grid;
  gap: 1.25rem;
  margin-top: 3rem;
}

@media (min-width: 900px) { .cs-steps { grid-template-columns: repeat(2, 1fr); } }

.cs-step {
  position: relative;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--paper);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.cs-step:hover {
  border-color: color-mix(in oklab, var(--primary) 45%, var(--border));
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -18px color-mix(in oklab, var(--foreground) 55%, transparent);
}

.cs-step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--primary);
}

.cs-step h3 {
  margin-top: 0.65rem;
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--foreground);
}

.cs-step p {
  margin-top: 0.75rem;
  color: var(--muted-foreground);
  line-height: 1.65;
}

.cs-step .cs-list { margin-top: 1rem; }

/* ---------- Impact grid ---------- */
.impact-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 3rem;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) { .impact-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .impact-grid { grid-template-columns: repeat(3, 1fr); } }

.impact-card {
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--background);
}

.impact-card .icon-tile { margin-bottom: 1rem; }

.impact-card h3 {
  font-size: 1.0625rem;
  color: var(--foreground);
}

.impact-card p {
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

/* ---------- Before / after ---------- */
.ba-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 3rem;
  grid-template-columns: 1fr;
}

@media (min-width: 860px) { .ba-grid { grid-template-columns: repeat(2, 1fr); } }

.ba-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--paper);
}

.ba-card.is-after {
  border-color: color-mix(in oklab, var(--primary) 40%, var(--border));
  background: color-mix(in oklab, var(--primary) 5%, var(--paper));
}

.ba-tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

.ba-card.is-after .ba-tag {
  background: var(--primary);
  color: var(--primary-foreground);
}

.ba-card ul {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.ba-card li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

.ba-card li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--muted-foreground);
}

.ba-card.is-after li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
}

/* ---------- Outcomes ---------- */
.outcome-grid {
  display: grid;
  gap: 1px;
  margin-top: 3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--border);
  overflow: hidden;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) { .outcome-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .outcome-grid { grid-template-columns: repeat(3, 1fr); } }

.outcome-cell {
  background: var(--paper);
  padding: 2rem 1.75rem;
}

.outcome-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--primary);
}

.outcome-cell h3 {
  margin-top: 0.75rem;
  font-size: 1.0625rem;
  color: var(--foreground);
}

.outcome-cell p {
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

/* ---------- Quote ---------- */
.cs-quote {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-3xl);
  background: var(--paper);
  text-align: center;
}

.cs-quote-mark {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: color-mix(in oklab, var(--primary) 50%, transparent);
}

.cs-quote blockquote {
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.025em;
  color: var(--foreground);
}

.cs-quote figcaption {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.cs-quote figcaption strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--foreground);
}

/* ---------- Two-column compare (ecosystem) ---------- */
.duo-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 3rem;
  grid-template-columns: 1fr;
}

@media (min-width: 860px) { .duo-grid { grid-template-columns: repeat(2, 1fr); } }

.duo-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--paper);
}

.duo-card h3 {
  font-size: 1.125rem;
  color: var(--foreground);
}

.duo-steps {
  display: grid;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.duo-steps li {
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--background);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--foreground);
}

/* ---------- Closing line stack ---------- */
.cs-closing {
  margin-top: 2rem;
  display: grid;
  gap: 0.35rem;
}

.cs-closing p {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--foreground);
}

.cs-closing p:last-child { color: var(--primary); }

@media (prefers-reduced-motion: reduce) {
  .cs-step { transition: none; }
  .cs-step:hover { transform: none; }
}

/* ---------- Case study images ---------- */
.cs-image {
  margin-top: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  background: var(--paper);
  box-shadow: 0 20px 40px -24px color-mix(in oklab, var(--foreground) 45%, transparent);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cs-image:hover {
  transform: translateY(-3px);
  box-shadow: 0 28px 52px -22px color-mix(in oklab, var(--foreground) 50%, transparent);
}

.cs-image img {
  display: block;
  width: 100%;
  height: auto;
}

@media (prefers-reduced-motion: reduce) {
  .cs-image { transition: none; }
  .cs-image:hover { transform: none; }
}