/* ===================================================================
   Case studies — orbix-style stacked panels, green/grey theme
   =================================================================== */

.case-studies-section {
  --cs-text: rgba(255, 255, 255, 0.92);
  --cs-text-soft: rgba(255, 255, 255, 0.68);
  --cs-frame: #ffffff;
  --cs-chrome: #f3f5f4;
  padding: 24px 0 0;
  overflow: clip;
}

.case-studies-intro {
  padding-bottom: 48px;
}

.case-studies-head {
  max-width: 760px;
}

.case-studies-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── Full-bleed panel ── */
.case-study-panel {
  position: relative;
  min-height: clamp(520px, 78vh, 860px);
  display: flex;
  align-items: center;
  padding: clamp(48px, 8vw, 96px) 0;
  color: var(--cs-text);
  isolation: isolate;
}

.case-study-panel-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.case-study-panel--deep-teal .case-study-panel-bg {
  background:
    radial-gradient(ellipse 80% 60% at 15% 20%, rgba(94, 201, 168, 0.18), transparent 55%),
    linear-gradient(155deg, #154d42 0%, #1b6b58 42%, #2a3438 100%);
}

.case-study-panel--charcoal .case-study-panel-bg {
  background:
    radial-gradient(ellipse 70% 55% at 85% 25%, rgba(122, 150, 144, 0.2), transparent 52%),
    linear-gradient(155deg, #2a3438 0%, #3d4f4a 48%, #5f7872 100%);
}

.case-study-panel--sage .case-study-panel-bg {
  background:
    radial-gradient(ellipse 75% 50% at 20% 80%, rgba(27, 107, 88, 0.22), transparent 50%),
    linear-gradient(155deg, #1b6b58 0%, #3a7a6e 46%, #7a9690 100%);
}

.case-study-panel--slate .case-study-panel-bg {
  background:
    radial-gradient(ellipse 65% 45% at 78% 70%, rgba(184, 212, 203, 0.16), transparent 48%),
    linear-gradient(155deg, #4d585c 0%, #5f7872 44%, #8fa39d 100%);
}

.case-study-panel--mist {
  --cs-text: #2a3438;
  --cs-text-soft: rgba(42, 52, 56, 0.68);
}

.case-study-panel--mist .case-study-panel-bg {
  background:
    radial-gradient(ellipse 80% 55% at 50% 0%, rgba(27, 107, 88, 0.1), transparent 58%),
    linear-gradient(155deg, #e8eeec 0%, #d4d9dc 38%, #b8c5c0 100%);
}

.case-study-panel-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
}

/* ── Meta row ── */
.case-study-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: clamp(28px, 5vw, 48px);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.case-study-index {
  color: var(--cs-text-soft);
  font-weight: 500;
}

.case-study-link {
  color: var(--cs-text);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.case-study-link:hover {
  opacity: 0.72;
}

/* ── Title (orbix mixed-type style) ── */
.case-study-title {
  margin: 0 0 10px;
  font-size: clamp(2.4rem, 6.5vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 400;
}

.case-study-title-bold {
  display: inline;
  font-family: "Plus Jakarta Sans", "Inter", sans-serif;
  font-weight: 700;
  color: var(--cs-text);
}

.case-study-title-italic {
  display: inline;
  margin-left: 0.14em;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 400;
  color: var(--cs-text);
}

.case-study-tagline {
  margin: 0 0 clamp(28px, 4vw, 44px);
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: var(--cs-text-soft);
  max-width: 42ch;
}

/* ── Browser frame + scrolling preview ── */
.case-study-preview {
  width: min(100%, 920px);
}

.case-study-browser {
  border-radius: 14px;
  overflow: hidden;
  background: var(--cs-frame);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow:
    0 2px 4px rgba(42, 52, 56, 0.06),
    0 24px 64px rgba(42, 52, 56, 0.18);
}

.case-study-panel--mist .case-study-browser {
  border-color: rgba(42, 52, 56, 0.1);
  box-shadow:
    0 2px 4px rgba(42, 52, 56, 0.04),
    0 20px 48px rgba(42, 52, 56, 0.12);
}

.case-study-browser-chrome {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: linear-gradient(180deg, var(--cs-chrome) 0%, #ecefed 100%);
  border-bottom: 1px solid #e8eeec;
}

.case-study-browser-dots {
  display: inline-flex;
  gap: 5px;
}

.case-study-browser-dots i {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d8dbe0;
}

.case-study-browser-dots i:nth-child(1) { background: #f0a8a0; }
.case-study-browser-dots i:nth-child(2) { background: #e8cc8a; }
.case-study-browser-dots i:nth-child(3) { background: #9ed4a0; }

.case-study-browser-url {
  flex: 1;
  text-align: center;
  font-size: 11px;
  color: #9ca8a3;
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

.case-study-viewport {
  position: relative;
  height: clamp(260px, 42vh, 480px);
  overflow: hidden;
  background: #f5f7f7;
}

.case-study-viewport::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 40px;
  background: linear-gradient(180deg, transparent, rgba(245, 247, 247, 0.55));
  pointer-events: none;
  z-index: 2;
}

.case-study-scroll-img {
  display: block;
  width: 100%;
  height: auto;
  will-change: transform;
  transform: translateY(0);
}

@media (max-width: 639px) {
  .case-study-panel {
    min-height: auto;
    padding: 40px 0 48px;
  }

  .case-study-meta {
    margin-bottom: 24px;
    font-size: 12px;
  }

  .case-study-viewport {
    height: clamp(220px, 36vh, 320px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-study-scroll-img {
    will-change: auto;
  }
}