/* ==========================================================================
   Case Study 01 (case-grid.html) — portfolio filter grid
   ========================================================================== */

.hero-subtitle {
  margin-top: 20px;
  max-width: 520px;
  font-size: 18px;
  line-height: 28px;
  color: rgba(255, 255, 255, 0.75);
}

.case-main {
  overflow: hidden;
}

.section {
  max-width: 1290px;
  margin: 0 auto;
  padding: 90px 24px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 18px;
  color: var(--color-text-paragraph);
  text-transform: capitalize;
  margin-bottom: 20px;
}

.section-eyebrow svg {
  flex-shrink: 0;
  color: var(--color-software-primary);
}

.section-title {
  font-size: 60px;
  line-height: 1.1;
  letter-spacing: -0.8px;
  max-width: 780px;
}

.section-title .highlight {
  color: var(--color-text-title);
  font-style: italic;
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
}

.case-intro {
  text-align: center;
}

.case-intro .section-eyebrow {
  justify-content: center;
}

.case-intro .section-title {
  max-width: none;
  margin: 0 auto;
}

.case-intro-text {
  margin: 20px auto 0;
  max-width: 810px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 500;
  line-height: 26px;
  color: var(--color-text-paragraph);
}

/* ===== Filter tabs ===== */
.case-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 36px;
  margin-bottom: 48px;
}

.filter-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  overflow: hidden;
  padding: 0 15px;
  line-height: 42px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: transparent;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 18px;
  text-transform: capitalize;
  color: var(--color-text-paragraph);
  cursor: pointer;
  margin-right: 10px;
  margin-bottom: 8px;
  transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.filter-item:hover {
  color: var(--color-software-primary);
}

.filter-item.active {
  background: #ffffff;
  border-color: var(--color-text-title);
  color: var(--color-text-title);
}

/* ===== Case grid ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 30px;
  row-gap: 42px;
  text-align: left;
}

/* Default view = image + category + title only (.case-card-main).
   Hovering the card scales up a white overlay panel (.case-card-holder)
   from the bottom that adds the excerpt + "View Details" link, matching
   the live theme's .pxl-body-main / .pxl-body-holder reveal-on-hover grid. */
.case-card {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
}

.case-card[hidden] {
  display: none;
}

.case-card-media {
  position: relative;
  display: block;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 24px;
}

.case-card-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 680 / 400;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.case-card-media:hover img {
  transform: scale(1.05);
}

.case-card-main .case-card-title {
  margin-bottom: 0;
}

.case-card-holder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: #ffffff;
}

.case-card-holder .case-card-media {
  margin-bottom: 15px;
}

.case-card-holder .case-card-media img {
  aspect-ratio: 630 / 230;
}

.case-card-content {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-card-holder .case-card-title {
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(2, 8, 66, 0.1);
}

.case-card-holder .btn-link {
  margin-top: auto;
}

@media (min-width: 1201px) {
  .case-card-holder {
    opacity: 0;
    transform: scaleY(0);
    transform-origin: bottom center;
    transition: transform 0.3s cubic-bezier(0.24, 0.74, 0.58, 1), opacity 0.3s cubic-bezier(0.24, 0.74, 0.58, 1);
    transition-delay: 0.1s;
  }

  .case-card:hover .case-card-holder {
    opacity: 1;
    transform: scaleY(1);
  }
}

@media (max-width: 1200px) {
  .case-card-main {
    display: none;
  }
}

.case-card-category {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  row-gap: 6px;
}

.case-card-category a {
  display: inline-flex;
  align-items: center;
  padding: 0 20px;
  line-height: 36px;
  border-radius: 20px;
  background: var(--color-software-primary);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 14px;
  text-transform: uppercase;
  color: #ffffff;
  margin-right: 10px;
  text-decoration: none;
}

.case-card-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.36;
  margin-bottom: 12px;
}

.case-card-title a {
  color: inherit;
  text-decoration: none;
}

.case-card-title a:hover {
  color: var(--color-software-primary);
}

.case-card-excerpt {
  font-size: 16px;
  line-height: 26px;
  color: var(--color-text-paragraph);
  margin-bottom: 16px;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 16px;
  color: var(--color-text-title);
  text-decoration: none;
}

.btn-link svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.btn-link:hover {
  color: var(--color-software-primary);
}

.btn-link:hover svg {
  transform: translateX(4px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 64px 24px; }
  .section-title { font-size: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 48px 20px; }
  .section-title { font-size: 40px; }
}

/* Live site keeps the 2-column case grid down to Bootstrap's sm
   breakpoint (col-sm-6) and only collapses to 1 column below 576px. */
@media (max-width: 575px) {
  .case-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .section-title { font-size: 35px; }
  .section-eyebrow { font-size: 16px; }
  .case-filter { gap: 8px; }
  .filter-item { padding: 8px 16px; font-size: 14px; }
}