/* ───────────────────────────────────────────────────────────
   Case Study Enhancements — shared component CSS
   Adds: zoom lightbox, phase accordion, before/after slider,
   numbered eyebrow, glass cards.
   Drop in via:  <link rel="stylesheet" href="/css/case-study-enhance.css">
   Activate elements via data attributes — no markup changes
   required for `[data-zoom]` images.
─────────────────────────────────────────────────────────── */

/* Make any image or figure marked [data-zoom] clickable */
[data-zoom] {
  cursor: zoom-in;
  transition: transform .35s cubic-bezier(.16,1,.3,1), box-shadow .35s;
}
[data-zoom]:hover {
  transform: translateY(-2px);
}

/* Subtle hover ring on zoomable images */
.cs-zoom-frame {
  position: relative;
  display: inline-block;
  width: 100%;
}
.cs-zoom-frame::after {
  content: "⤢";
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: rgba(12,19,36,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
  color: #E8EDF5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .25s ease, transform .25s ease;
  pointer-events: none;
  z-index: 2;
}
.cs-zoom-frame:hover::after,
[data-zoom]:hover + .cs-zoom-hint {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Lightbox ─────────────────────────────────────────── */
.cs-lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(8,12,22,0.96);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  display: none;
  flex-direction: column;
  animation: csFadeIn .25s ease;
}
.cs-lightbox.open { display: flex; }
@keyframes csFadeIn { from { opacity: 0; } to { opacity: 1; } }

.cs-lightbox-bar {
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.cs-lightbox-title {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: #E8EDF5;
  letter-spacing: -0.01em;
}
.cs-lightbox-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.cs-lightbox-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(20,28,46,0.7);
  border: 1px solid rgba(255,255,255,0.08);
  color: #E8EDF5;
  font-size: 18px; font-weight: 700;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.cs-lightbox-btn:hover {
  border-color: #1ABADC;
  color: #1ABADC;
}
.cs-lightbox-btn:disabled {
  opacity: 0.35; cursor: not-allowed;
}
.cs-lightbox-zoomlbl {
  width: 60px; text-align: center;
  font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
  font-size: 13px; color: #E8EDF5;
}

.cs-lightbox-stage {
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #06091a;
  cursor: grab;
  user-select: none;
}
.cs-lightbox-stage.dragging { cursor: grabbing; }
.cs-lightbox-stage img {
  max-width: 95vw;
  max-height: calc(100vh - 80px);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  transition: transform .15s ease-out;
  user-select: none;
  -webkit-user-drag: none;
}

/* ─── Phase Accordion (drop-in) ───────────────────────── */
.cs-phases {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cs-phase {
  background: rgba(20,28,46,0.55);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color .25s;
}
.cs-phase.open {
  border-color: rgba(26,186,220,0.4);
}
.cs-phase-head {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  color: inherit;
  padding: 26px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  cursor: pointer;
  font-family: inherit;
  transition: background .2s;
}
.cs-phase-head:hover {
  background: rgba(26,186,220,0.04);
}
.cs-phase-num {
  font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
  color: #1ABADC;
  font-size: 13px;
  width: 32px;
  flex-shrink: 0;
}
.cs-phase-titles {
  flex: 1;
}
.cs-phase-tag {
  font-size: 11px;
  font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
  color: #5C6F8A;
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 600;
  margin-bottom: 4px;
}
.cs-phase-title {
  font-size: 19px;
  font-weight: 600;
  color: #E8EDF5;
  letter-spacing: -0.015em;
  line-height: 1.2;
}
.cs-phase-caret {
  width: 20px; height: 20px;
  color: #5C6F8A;
  transition: transform .3s, color .25s;
  flex-shrink: 0;
}
.cs-phase.open .cs-phase-caret {
  transform: rotate(180deg);
  color: #1ABADC;
}
.cs-phase-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.16,1,.3,1), opacity .3s;
  opacity: 0;
}
.cs-phase.open .cs-phase-body {
  max-height: 700px;
  opacity: 1;
}
.cs-phase-body-inner {
  padding: 0 32px 28px 88px;
}
.cs-phase-desc {
  font-size: 15px;
  color: #8A9BB5;
  line-height: 1.7;
  margin-bottom: 18px;
  max-width: 760px;
}
.cs-phase-bullets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.cs-phase-bullet {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #8A9BB5;
}
.cs-phase-bullet::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #1ABADC;
  margin-top: 7px;
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .cs-phase-head { padding: 22px 22px; gap: 16px; }
  .cs-phase-num { width: auto; }
  .cs-phase-body-inner { padding: 0 22px 22px 22px; }
  .cs-phase-bullets { grid-template-columns: 1fr; }
}

/* ─── Before / After Slider (drop-in) ─────────────────── */
.cs-ba {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.08);
  background: #000;
  cursor: ew-resize;
  user-select: none;
  -webkit-user-select: none;
}
.cs-ba-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: left top;
  pointer-events: none;
}
.cs-ba-clip {
  position: absolute; inset: 0;
  overflow: hidden;
  pointer-events: none;
  clip-path: inset(0 50% 0 0);
}
.cs-ba-label {
  position: absolute; top: 18px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 11px;
  font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  backdrop-filter: blur(12px);
  z-index: 10;
}
.cs-ba-label.before {
  left: 18px;
  background: rgba(12,19,36,0.8);
  border: 1px solid rgba(255,255,255,0.06);
  color: #8A9BB5;
}
.cs-ba-label.after {
  right: 18px;
  background: rgba(26,186,220,0.9);
  border: 1px solid #1ABADC;
  color: #0c1324;
}
.cs-ba-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: #1ABADC;
  box-shadow: 0 0 28px 4px #1ABADC;
  left: 50%;
  z-index: 20;
  pointer-events: none;
}
.cs-ba-handle {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 52px; height: 52px;
  border-radius: 50%;
  background: #1ABADC;
  color: #0c1324;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 36px rgba(26,186,220,0.7);
  border: 3px solid #0c1324;
  z-index: 30;
  font-size: 20px;
  font-weight: 700;
  transition: transform .15s;
}
.cs-ba:hover .cs-ba-handle {
  transform: translate(-50%, -50%) scale(1.08);
}
.cs-ba-hint {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(12,19,36,0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 11px;
  font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: #8A9BB5;
  z-index: 10;
}