/* ============================================================
   KODREX — Case Study Page (Carowna)
   ============================================================ */

/* ── Hero ── */
.cs-hero {
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: 120px 5% 72px;
  position: relative;
  overflow: hidden;
  background: var(--bg-base);
}

.cs-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 60% 50% at 70% 30%,
      rgba(200, 57, 43, 0.06) 0%,
      transparent 65%
    ),
    radial-gradient(
      ellipse 40% 60% at 20% 70%,
      rgba(200, 57, 43, 0.03) 0%,
      transparent 65%
    );
  pointer-events: none;
}

.cs-hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 2;
}

.cs-hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.cs-hero-tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  background: var(--red-dim);
  border: 1px solid var(--border-red);
  border-radius: 2px;
  padding: 4px 12px;
}

.cs-hero-tag-sep {
  color: var(--text-muted);
  font-size: 12px;
}

.cs-hero-tag-plain {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 4px 12px;
}

.cs-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(72px, 11vw, 160px);
  line-height: 0.88;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.cs-hero-subtitle {
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--text-secondary);
  max-width: 500px;
  line-height: 1.75;
  margin-bottom: 52px;
}

.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  max-width: 720px;
}

.cs-meta-item {
  background: var(--bg-3);
  padding: 20px 24px;
}

.cs-meta-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.cs-meta-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

/* ── Overview Strip ── */
.cs-overview {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
}

.cs-overview-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.cs-overview-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.cs-overview-stat-num {
  font-family: var(--font-heading);
  font-size: 52px;
  line-height: 0.9;
  color: var(--red);
  margin-bottom: 6px;
}

.cs-overview-stat-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.cs-overview-stat-sub {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Common Section ── */
.cs-section {
  padding: var(--section-pad) 0;
}

.cs-section-alt {
  background: var(--bg-2);
}

.cs-section-header {
  margin-bottom: 56px;
}

.cs-section-num {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.cs-section-num::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--red);
}

.cs-section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(36px, 5vw, 72px);
  line-height: 0.9;
  letter-spacing: 0.03em;
}

.cs-section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-top: 16px;
  line-height: 1.75;
}

/* ── Challenge Layout ── */
.cs-challenge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-challenge-block {
  background: var(--bg-3);
  padding: 48px 44px;
}

.cs-challenge-block h3 {
  font-family: var(--font-heading);
  font-size: 28px;
  letter-spacing: 0.03em;
  margin: 12px 0 20px;
  line-height: 1.05;
}

.cs-challenge-block > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.cs-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cs-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  line-height: 1.6;
}

.cs-list li:last-child {
  border-bottom: none;
}

.cs-list-arrow {
  color: var(--red);
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 3px;
}

/* ── Approach Cards ── */
.cs-approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-approach-card {
  background: var(--bg-3);
  padding: 40px 36px;
  transition: background 0.2s;
}

.cs-approach-card:hover {
  background: var(--bg-4);
}

.cs-approach-card-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 12px;
}

.cs-approach-card h3 {
  font-family: var(--font-heading);
  font-size: 24px;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.1;
}

.cs-approach-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ── Booking Flow ── */
.cs-flow-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-flow-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}

.cs-flow-step:last-child {
  border-bottom: none;
}
.cs-flow-step:hover {
  background: var(--bg-3);
}

.cs-flow-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--red-dim);
  border-right: 1px solid var(--border-red);
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--red);
  padding: 28px 0;
}

.cs-flow-step-content {
  padding: 28px 32px;
}

.cs-flow-step-content strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 18px;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.cs-flow-step-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Tech Stack ── */
.cs-tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-tech-card {
  background: var(--bg-3);
  padding: 28px 24px;
  transition: background 0.2s;
}

.cs-tech-card:hover {
  background: var(--bg-4);
}

.cs-tech-icon {
  font-size: 24px;
  margin-bottom: 12px;
}

.cs-tech-name {
  font-family: var(--font-heading);
  font-size: 18px;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cs-tech-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Features Table ── */
.cs-features-table {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  border-collapse: collapse;
}

.cs-features-table th {
  background: var(--bg-4);
  padding: 14px 20px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.cs-features-table td {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.65;
}

.cs-features-table tr:last-child td {
  border-bottom: none;
}

.cs-features-table tr:hover td {
  background: var(--bg-3);
}

.cs-role-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
  white-space: nowrap;
}

.cs-role-badge.customer {
  background: rgba(200, 57, 43, 0.1);
  color: var(--red);
}
.cs-role-badge.vendor {
  background: rgba(240, 236, 227, 0.07);
  color: var(--text-secondary);
}
.cs-role-badge.platform {
  background: rgba(240, 236, 227, 0.04);
  color: var(--text-muted);
}

/* ── Engineering Highlights ── */
.cs-eng-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-eng-card {
  background: var(--bg-3);
  padding: 40px 36px;
}

.cs-eng-num {
  font-family: var(--font-heading);
  font-size: 52px;
  line-height: 0.85;
  color: var(--red);
  opacity: 0.2;
  margin-bottom: 8px;
}

.cs-eng-card h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.2;
}

.cs-eng-problem {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.cs-eng-solution {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.cs-eng-solution strong {
  color: var(--red);
  font-weight: 600;
}

/* ── Metrics Grid ── */
.cs-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 2px;
}

.cs-metric-card {
  background: var(--bg-3);
  padding: 32px 28px;
  transition: background 0.2s;
}

.cs-metric-card:hover {
  background: var(--bg-4);
}

.cs-metric-val {
  font-family: var(--font-heading);
  font-size: 48px;
  line-height: 0.9;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.cs-metric-val span {
  color: var(--red);
}

.cs-metric-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.cs-metric-sub {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Platform Roles ── */
.cs-roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-role-card {
  background: var(--bg-3);
  padding: 40px 36px;
}

.cs-role-card h3 {
  font-family: var(--font-heading);
  font-size: 26px;
  letter-spacing: 0.03em;
  margin: 12px 0 20px;
  line-height: 1.1;
}

.cs-role-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cs-role-list li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.55;
}

.cs-role-list li:last-child {
  border-bottom: none;
}
.cs-role-list li::before {
  content: '—';
  color: var(--red);
  flex-shrink: 0;
}

/* ── Case Study CTA ── */
.cs-cta {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 100px 5%;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cs-cta-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(
    ellipse,
    rgba(200, 57, 43, 0.07) 0%,
    transparent 65%
  );
  pointer-events: none;
}

.cs-cta h2 {
  font-family: var(--font-heading);
  font-size: clamp(36px, 5vw, 72px);
  line-height: 0.9;
  margin-bottom: 16px;
}

.cs-cta p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto 36px;
  line-height: 1.75;
}

.cs-cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Testimonial ── */
.cs-testimonial {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 64px 0;
}

.cs-testimonial-quote {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-primary);
  line-height: 1.65;
  margin-bottom: 28px;
  font-style: italic;
}

.cs-testimonial-author {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .cs-overview-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
  .cs-meta-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-tech-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-metrics-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .cs-challenge-grid {
    grid-template-columns: 1fr;
  }
  .cs-approach-grid {
    grid-template-columns: 1fr;
  }
  .cs-eng-grid {
    grid-template-columns: 1fr;
  }
  .cs-roles-grid {
    grid-template-columns: 1fr;
  }
  .cs-overview-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-features-table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  .cs-meta-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-metrics-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-tech-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cs-overview-grid {
    grid-template-columns: 1fr;
  }
}