/* ---------- Case study hero ---------- */

.case-hero {
  background: var(--white);
  padding: 60px 0 20px;
}

.case-container {
  max-width: 820px;
}

.case-meta {
  font-family: var(--sans);
  color: var(--text-gray);
  font-size: 0.9rem;
  margin: 0 0 8px;
}

.case-hero h1 {
  margin: 0;
}

/* ---------- Case study body ---------- */

.case-body {
  background: var(--white);
  padding: 24px 0 20px;
}

.case-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  align-items: start;
}

.case-sidebar {
  position: sticky;
  top: 110px;
  display: flex;
  flex-direction: column;
}

.case-back {
  display: inline-block;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 28px;
}

.case-toc {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-toc a {
  color: var(--navy);
  font-size: 0.95rem;
}

.case-toc a:hover,
.case-toc a.active {
  color: var(--blue);
}

.case-main {
  min-width: 0;
  max-width: 900px;
  overflow: hidden;
}

.case-block {
  padding: 0 0 72px;
  scroll-margin-top: 100px;
}

.case-block h2 {
  font-size: 1.7rem;
  margin: 0 0 24px;
  max-width: 720px;
}

.case-intro {
  color: var(--navy);
  font-size: 1.05rem;
  margin: 32px 0 64px;
}

.case-lead {
  color: var(--navy);
  font-size: 1.05rem;
  margin: 0 0 28px;
}

.section-label {
  display: block;
  font-family: var(--sans);
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
  font-weight: 700;
  margin: 0 0 12px;
}

.callout-box {
  color: var(--navy);
  font-size: 1.05rem;
  margin: 0;
}

.callout-box p {
  margin: 0;
  color: var(--navy);
}

/* ---------- Media placeholders ---------- */

.media-placeholder {
  background: var(--bg-light);
  border: 1px dashed #c9c9cc;
  border-radius: 8px 32px 8px 8px;
  color: var(--text-gray);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.video-placeholder {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-bottom: 0;
  object-fit: cover;
  border-radius: 6px;
}

.case-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 32px;
  margin-top: 28px;
}

.case-meta-label {
  display: block;
  font-family: var(--sans);
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.case-meta-value {
  color: var(--text-gray);
  font-size: 1rem;
  margin: 0;
  line-height: 1.4;
}

.solution-placeholder {
  width: 100%;
  height: 100%;
  min-height: 140px;
  border-radius: 8px 32px 8px 8px;
}

.proto-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 12px;
}

img.proto-placeholder {
  object-fit: cover;
  border-radius: 8px 8px 8px 8px;
  box-shadow: 0 12px 30px rgba(20, 20, 107, 0.12);
}

img.proto-wireframe {
  object-position: top;
}

.gif-placeholder {
  width: 100%;
  height: 100%;
  min-height: 220px;
}

.media-caption {
  font-family: var(--sans);
  color: var(--text-gray);
  font-size: 0.9rem;
  text-align: center;
  margin: 0;
}

/* ---------- Solution ---------- */

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.solution-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: center;
}

.solution-item img {
  width: 100%;
  border-radius: 8px 8px 8px 8px;
  box-shadow: 0 12px 30px rgba(20, 20, 107, 0.12);
}

.solution-item p {
  color: var(--text-gray);
  font-family: var(--sans);
  font-style: 600;
  font-size: 1.15rem;
  margin: 0;
}

/* ---------- Connecting with users ---------- */

.persona-carousel {
  position: relative;
  margin-bottom: 40px;
}

.persona-grid {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 4px 8px;
  margin: 0 -8px;
  scrollbar-width: none;
}

.persona-grid::-webkit-scrollbar {
  display: none;
}

.persona-card {
  flex: 0 0 auto;
  width: max(280px, 28vw);
  scroll-snap-align: start;
  background: var(--bg-lavender);
  border-radius: 16px 16px 16px 4px;
  padding: 16px 28px;
}

.persona-carousel-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 56px;
  pointer-events: none;
  z-index: 1;
}

.persona-carousel-fade-left {
  left: 0;
  background: linear-gradient(to right, var(--white), rgba(253, 252, 251, 0));
}

.persona-carousel-fade-right {
  right: 0;
  background: linear-gradient(to left, var(--white), rgba(253, 252, 251, 0));
}

.persona-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: var(--white);
  color: var(--blue);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(20, 20, 107, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
}

.persona-arrow:hover {
  background: var(--bg-lavender);
}

.persona-arrow:focus {
  outline: none;
}

.persona-arrow:focus-visible {
  outline: none;
  box-shadow: 0 6px 18px rgba(20, 20, 107, 0.18), 0 0 0 3px rgba(35, 35, 230, 0.35);
}

.persona-arrow-prev {
  left: -20px;
}

.persona-arrow-next {
  right: -20px;
}

.persona-icon {
  font-size: 1.1rem;
  display: inline-block;
}

.persona-card h3 {
  font-size: 1.1rem;
  margin: 0 0 8px;
}

.persona-card ul {
  margin: 0 0 10px;
  padding-left: 20px;
  color: var(--navy);
  font-size: 0.95rem;
}

.persona-card li {
  margin-bottom: 3px;
}

.persona-quote {
  font-family: var(--sans);
  font-style: italic;
  color: var(--navy);
  font-size: 0.98rem;
  margin: 0;
  border-top: 1px solid rgba(35, 35, 230, 0.15);
  padding-top: 8px;
}

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.story-card h4 {
  font-family: var(--serif);
  color: var(--blue);
  font-weight: 400;
  font-size: 1.15rem;
  margin: 0 0 12px;
}

.story-card p {
  color: var(--navy);
  font-size: 0.98rem;
  margin: 0;
}

/* ---------- Defining product needs ---------- */

.needs-table-wrap {
  overflow-x: auto;
  margin-bottom: 40px;
}

.needs-table {
  width: 100%;
  border-collapse: collapse;
}

.needs-table th,
.needs-table td {
  text-align: left;
  padding: 16px 20px;
  font-size: 0.95rem;
}

.needs-table th {
  color: var(--text-dark);
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.needs-table td {
  color: var(--text-dark);
}

.needs-table td:first-child {
  font-weight: 700;
  white-space: nowrap;
}

.proto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

/* ---------- Building ---------- */

.tech-chip-row {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 32px;
  width: 100%;
}

.tech-chip {
  flex: 0 0 auto;
  padding: 9px 18px;
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
}

.chip-react { background: #ec1ccb; }
.chip-next { background: #b580e9; }
.chip-drizzle { background: #59d1b3; }
.chip-jest { background: #f3af56; }

.deepdive-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: start;
}

.deepdive-media img {
  width: 100%;
  border-radius: 8px 8px 8px 8px;
  box-shadow: 0 12px 30px rgba(20, 20, 107, 0.12);
}

.flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--bg-lavender);
}

.flow-step {
  position: relative;
  padding: 2px 0 32px 32px;
  transition: transform 0.25s ease;
  transform-origin: left center;
}

.flow-step:hover {
  transform: scale(1.04);
}

.flow-step:last-child {
  padding-bottom: 0;
}

.flow-step::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
}

.flow-step .flow-label {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.flow-step p {
  margin: 0;
  color: var(--navy);
  font-size: 1rem;
}

/* ---------- Product tradeoffs ---------- */

.tradeoff-kicker {
  display: block;
  font-family: var(--sans);
  font-style: italic;
  color: var(--text-gray);
  font-size: 1.1rem;
  margin: 0 0 20px;
}

.tradeoff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.tradeoff-col h4 {
  font-family: var(--sans);
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
  font-weight: 700;
  margin: 0 0 10px;
}

.tradeoff-col p {
  color: var(--navy);
  font-size: 1rem;
  margin: 0;
}

/* ---------- Learnings ---------- */

.learnings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.learning-col h3 {
  font-size: 1.25rem;
  margin: 0 0 12px;
}

.learning-col p {
  color: var(--navy);
  font-size: 1rem;
  margin: 0;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .case-layout {
    grid-template-columns: 1fr;
  }

  .case-sidebar {
    position: static;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 24px;
  }

  .case-toc {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
  }

  .solution-item,
  .persona-grid,
  .story-grid,
  .proto-grid,
  .deepdive-grid,
  .tradeoff-grid,
  .learnings-grid {
    grid-template-columns: 1fr;
  }

  .case-meta-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 20px;
  }

  .tech-chip-row {
    width: 100%;
  }
}