/* ===== CASE STUDIES SECTION ===== */

.case-studies-section {
  position: relative;
  /* Match services section padding */
  padding-top: clamp(1rem, 3vw, 2rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
  color: #e9eef4;
  overflow: hidden;
  z-index: 0;
  text-align: center; /* default; we override inner bits where needed */

  /* Fallback image */
  background-image: url('/static/img/case-studies-desktop.jpg');

  /* Modern responsive images */
  background-image: -webkit-image-set(
    url('/static/img/case-studies-desktop.webp') type("image/webp") 1x,
    url('/static/img/case-studies-desktop@2x.webp') type("image/webp") 2x,
    url('/static/img/case-studies-desktop.jpg') type("image/jpeg") 1x,
    url('/static/img/case-studies-desktop@2x.jpg') type("image/jpeg") 2x
  );
  background-image: image-set(
    url('/static/img/case-studies-desktop.webp') type("image/webp") 1x,
    url('/static/img/case-studies-desktop@2x.webp') type("image/webp") 2x,
    url('/static/img/case-studies-desktop.jpg') type("image/jpeg") 1x,
    url('/static/img/case-studies-desktop@2x.jpg') type("image/jpeg") 2x
  );

  background-size: cover;
  background-position: center 25%;
  background-repeat: no-repeat;
}

/* Inner container width and padding - match services-inner */
.case-studies-inner {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);

}

/* Mobile background swap */
/* Mobile background swap - Portrait */
@media (max-width: 768px) and (orientation: portrait) {
  .case-studies-section {
    background-image: -webkit-image-set(
      url('/static/img/case-studies-mobile.webp') type("image/webp") 1x,
      url('/static/img/case-studies-mobile@2x.webp') type("image/webp") 2x,
      url('/static/img/case-studies-mobile.jpg') type("image/jpeg") 1x,
      url('/static/img/case-studies-mobile@2x.jpg') type("image/jpeg") 2x
    );
    background-image: image-set(
      url('/static/img/case-studies-mobile.webp') type("image/webp") 1x,
      url('/static/img/case-studies-mobile@2x.webp') type("image/webp") 2x,
      url('/static/img/case-studies-mobile.jpg') type("image/jpeg") 1x,
      url('/static/img/case-studies-mobile@2x.jpg') type("image/jpeg") 2x
    );
    background-position: center 40%;
  }
}

/* Mobile background swap - Landscape */
@media (max-width: 768px) and (orientation: landscape) {
  .case-studies-section {
    background-image: -webkit-image-set(
      url('/static/img/case-studies-mobile-landscape.webp') type("image/webp") 1x,
      url('/static/img/case-studies-mobile-landscape@2x.webp') type("image/webp") 2x,
      url('/static/img/case-studies-mobile-landscape.jpg') type("image/jpeg") 1x,
      url('/static/img/case-studies-mobile-landscape@2x.jpg') type("image/jpeg") 2x
    );
    background-image: image-set(
      url('/static/img/case-studies-mobile-landscape.webp') type("image/webp") 1x,
      url('/static/img/case-studies-mobile-landscape@2x.webp') type("image/webp") 2x,
      url('/static/img/case-studies-mobile-landscape.jpg') type("image/jpeg") 1x,
      url('/static/img/case-studies-mobile-landscape@2x.jpg') type("image/jpeg") 2x
    );
    background-position: center 40%;
  }
}

/* High DPI fallback when image-set() not supported */
@supports not (background-image: image-set(url("x") 1x)) {
  @media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .case-studies-section {
      background-image: url('/static/img/case-studies-desktop@2x.jpg');
    }
  }
}

/* ===== Set fall back backgorund fade colours ===== */
.case-studies-section {
  /* Fallback solid color for browsers that don't support background images */
  background-color: var(--primary-color-dark, #0c74d4);

  /* Overlay gradient to ensure text readability on all backgrounds */
  background-image:
    /* linear-gradient(rgba(12,116,212,0.85), rgba(12,116,212,0.85)), */
    url('/static/img/case-studies-desktop.jpg');
}

/* INTRO */
.case-study-intro {
  text-align: left;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.case-study-intro h2 {
  text-transform: uppercase;
  /* font-weight: 300; */
  color: var(--text-tertiary);
  text-align: left;
  /*max-width: 1000px; align with paragraph width */
  max-width: 1200px; 
  margin-inline: auto;
}

.case-study-intro p {
  font-size: var(--text-base);
  /* font-size: 0.95rem;
  font-size: clamp(1rem, 2.2vw, 1.1rem); */
  line-height: 1.6;
  color: var(--neutral-light);
  /* font-weight: 250; */
  margin-top: 0;
} 

.case-study-lead {
  /* max-width: 600px; */
  margin: 0 auto;
  color: var(--neutral-light);
  line-height: 1.6;
  /* font-weight: 250; */
  text-align: left;
  margin-top: 0;
}

.case-studies-lead p {
  /* font-size: var(--text-base); */
  font-size: clamp(0.9rem, 1vw, 1rem);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

/* Reduce paragraph widths by ~200px compared to full container */
.case-studies-section p,
.case-studies-section .carousel-card-text {
  max-width: 1200px; /* adjusted down from typical container (~1200px) */
  margin-inline: auto;
}


/* Center the intro on mobile for balance */
@media (max-width: 768px) {
  .case-study-intro {
    /* center-align intro on mobile */
    text-align: left;
    /* padding-inline: clamp(0.75rem, 6vw, 1rem); */
    margin-inline: 0;
  }
  .case-study-lead {
    margin-inline: 0;
    text-align: left;
  }
}

/* ===== SECTOR FILTER PILLS ===== */

.cs-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  justify-content: center;
  margin: clamp(0.75rem, 2.5vw, 1.25rem) 0 var(--space-3);
}

.cs-pill {
  appearance: none;
  cursor: pointer;
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-btn, 8px);
  
  font-family: 'Noto Sans', sans-serif;
  font-weight: 300;
  font-size: clamp(0.9rem, 1vw, 1rem);
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--neutral-light);
  text-decoration: none;
  min-width: 100px;

  /* Glass effect */
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);

  transition: transform .12s ease, background .12s ease, color .12s ease, 
              box-shadow .12s ease, border-color .12s ease;
}

/* .cs-pill {
  padding: .4rem .85rem;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 400;

  color: #e6f2ff;
  background: rgba(12, 116, 212, 0.65);
  box-shadow: 0 4px 10px rgba(0,0,0,.18);

  transition: background .2s ease, transform .15s ease, box-shadow .15s ease;
} */

.cs-pill:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  color: #fff;
}

.cs-pill.is-active {
  background: rgba(12, 116, 212, 0.55);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 16px rgba(12, 116, 212, 0.25);
}

/* ===== CAROUSEL ===== */

.case-carousel-wrapper {
   /* accommodate hover lift */
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.case-carousel-track {
  display: flex;
  gap: 1rem;
  padding: 6px 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding: 6px 1rem;
  -webkit-overflow-scrolling: touch;
}

.case-carousel-item {
  flex: 0 0 auto;
  width: clamp(220px, 30vw, 300px);
  scroll-snap-align: start;

  background: var(--neutral-cream, #ffffff);
  color: var(--text-secondary);
  border-radius: 20px;
  border: 0;
  padding: 1rem;
  box-shadow: 0 2.5px 2.5px rgba(0,0,0,.25);
  transition: transform .2s ease, box-shadow .2s ease;
  /* Add subtle white border for contrast against background, especially on hover */
  /* border: 2px solid white; */
}

.case-carousel-item:hover {
  transform: translateY(-3px);
  /* box-shadow: 0 14px 34px rgba(0,0,0,.3); */
}

.carousel-card-title {
  font: 450 clamp(1.1rem, 2.0vw, 1.2rem) 'Raleway', sans-serif;
  /* color: var(--case-color, #ffffff); */
  color: var(--primary-color-dark, #0c74d4);
  /* a little more space above the title for visual breathing */
  margin: clamp(0.5rem, 1.5vw, 0.75rem) 0 0.1rem;
  /* Make titles occupy up to two lines with a uniform height */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.15;
  min-height: calc(2 * 1.15em);
}

.carousel-card-text {
  font-size: var(--text-sm); line-height: 1.4; color: var(--text-secondary); /* font-weight: 250; */ margin-top: 0;
  color: var(--text-secondary, #6b7280);
  margin-bottom: 0.5rem;
  margin-top: 0.5rem;
}

.carousel-card-text.location-text {
  font: 300 clamp(0.9rem, 1.9vw, 1rem) 'Noto Sans', sans-serif;
  color: var(--neutral-gray, #9ca3af);
  margin-bottom: var(--space-2);
} 

.case-image-wrapper {
  width: 100%;
  /* max-width: 300px; */
  aspect-ratio: 4/3;
  /* aspect-ratio: 1/1; */
  background: #ffffff; /*#f3f4f6;*/
  border-radius: 12px;
  /* very faint border to give the image box a subtle frame */
  border: 1px solid rgba(15,23,42,0.04);
  /* subtle drop shadow for depth */
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  overflow: hidden;
  /* margin: .4rem 0 .6rem; */
}

.case-image-wrapper picture {
  display: block;
  width: 100%;
  height: 100%;
}

.case-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.service-icons {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem;
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
  justify-content: center;
  align-items: center;
  min-height: 30px;
  overflow: visible;
}

.service-icon-item {
  flex: 0 0 auto;
  position: relative;
  cursor: default;
  /* --service-icon-color: color-mix(in srgb, var(--text-primary, #333) 25%, transparent); */
  /* --service-icon-color: #ffffff;
  --service-icon-hover-color: var(--primary-color); #256fbeff*/
  --service-icon-color:var(--primary-color-dark, #0c74d4);
  --service-icon-hover-color: #ffffff;
  /* --service-icon-bg: color-mix(in srgb, var(--text-primary, #333) 8%, transparent); */
  --service-icon-bg: #ffffff ;
  --service-icon-bg-hover: color-mix(in srgb, var(--primary-color) 14%, transparent);
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  background-color: var(--service-icon-bg);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.service-icon {
  width: 30px;
  height: 30px;
  display: block;
  opacity: 0.8;
  cursor: default;
  padding: 2px;
  background-color: var(--service-icon-color);
  -webkit-mask-image: var(--service-icon-url);
  mask-image: var(--service-icon-url);
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.service-icon-item.is-active {
  --service-icon-color: var(--neutral-gray, #0c74d4);
  --service-icon-bg: #ffffff;
}

.service-icon-item:hover .service-icon {
  opacity: 1;
  transform: scale(1.15);
  background-color: var(--service-icon-hover-color);
}

.service-icon-item:hover {
  background-color: var(--service-icon-bg-hover);
}

.service-icon-item::after {
  content: attr(data-service-label);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.45rem);
  transform: translateX(-50%) translateY(4px);
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  background: #ffffff;
  color: var(--text-primary, #333);
  font-size: 0.75rem;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
  z-index: 2;
}

.service-icon-item:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.service-icon-item:focus-within::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* link under card */
.zoom-link {
  display: block;
  margin-top: .5rem;
  font-size: .85rem;
  text-align: center;
  color: var(--case-color, #0c74d4) !important;
  text-decoration: underline;
}

.zoom-link:hover {
  text-decoration: none;
}

/* Hide case-study description and units on small screens, but keep location visible */
@media (max-width: 600px) {
  .case-carousel-item .carousel-card-text:not(.location-text):not(.case-study-metric) {
    display: none;
  }
}

.carousel-card-text sup {
  font-size: 0.6em;
}

/* ===== MAP ===== */

.map-container,
#map {
  height: clamp(225px, 40vh, 350px);
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  margin-top: var(--space-3);
}

/* ===== “VIEW ALL CASE STUDIES” BUTTON ===== */

.case-studies-section .view-all-wrapper {
  margin-top: var(--space-4);
  text-align: center;
}

/* Make the 'View all' button less visually dominant in this section */
.case-studies-section .view-all-wrapper .btn {
  background: transparent !important;
  color: rgba(255,255,255,0.92) !important;
  border-color: rgba(255,255,255,0.12) !important;
  box-shadow: none !important;
  opacity: 0.95;
  transition: background .18s ease, transform .12s ease, color .12s ease;
}
.case-studies-section .view-all-wrapper .btn:hover {
  background: rgba(255,255,255,0.04) !important;
  transform: translateY(-1px);
}

/* Tone down the per-card zoom links so they don't draw too much attention */
.case-carousel-item .zoom-link {
  color: #6b7280 !important; /* muted gray */
  text-decoration: none;
  font-weight: 500;
  opacity: 0.95;
}
.case-carousel-item .zoom-link:hover {
  color: var(--case-color, #00bfff) ; /* slightly darker on hover */
  text-decoration: underline;
}

/* If a card has no layer, visually de-emphasize it */
.case-carousel-item.no-layer {
  opacity: 0.85;
}
.case-carousel-item.no-layer .zoom-link {
  color: #6b7280;
}

@media (min-width: 769px) {
  .case-studies-section {
    padding-top: 0.5rem;
  }
}