/* ====== PROJECTS PAGE — EDITORIAL CASE STUDY LAYOUT ======
   Scoped to projects.html only — not linked from any other page. */

.case-studies {
  padding: 64px 0 32px;
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.case-study {
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 108px 0 72px;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: visible;
}
.case-study:last-child { border-bottom: none; }
.case-study.reverse { flex-direction: row-reverse; }

.case-index {
  position: absolute;
  top: 8px;
  font-family: var(--serif);
  font-size: 80px;
  font-weight: 700;
  line-height: 1;
  color: var(--purple-300);
  opacity: 0.16;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}
.case-study:not(.reverse) .case-index { left: -8px; }
.case-study.reverse .case-index { right: -8px; }

.case-media {
  flex: 1 1 56%;
  position: relative;
  isolation: isolate;
  aspect-ratio: 4 / 3;
  border-radius: 20px;
  overflow: hidden;
  background: var(--bg-2);
  transform-style: preserve-3d;
  transition: transform .2s ease-out, box-shadow .3s ease;
  box-shadow: 0 20px 48px -20px rgba(var(--glow), 0.2);
}
.case-media img:not(.case-logo) {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.case-study:hover .case-media img:not(.case-logo) { transform: scale(1.05); }

.case-logo {
  height: 64px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  object-position: left center;
  margin-bottom: 4px;
}
/* Squarer logo marks (BAPCO, ARAMCO) render smaller at the same height as the
   wide wordmark logos (Shuwair, KSB) — size them up so all four feel equally prominent. */
.case-logo-lg {
  height: 92px;
  max-width: 260px;
}
.case-logo-xl {
  height: 128px;
  max-width: 320px;
}

/* Cursor-follow spotlight on the media */
.case-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  border-radius: inherit;
  opacity: 0;
  transition: opacity .35s ease;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.18), transparent 62%);
}
.case-study:hover .case-media::before { opacity: 1; }

/* Rotating glow ring around the media on hover */
.case-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  border-radius: inherit;
  padding: 2px;
  background: conic-gradient(from 0deg, transparent 0%, var(--purple-300) 12%, transparent 24%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .4s ease;
  animation: projects-glow-spin 4s linear infinite;
  animation-play-state: paused;
}
.case-study:hover .case-media::after {
  opacity: .9;
  animation-play-state: running;
}
@keyframes projects-glow-spin {
  to { background: conic-gradient(from 360deg, transparent 0%, var(--purple-300) 12%, transparent 24%); }
}

.case-content {
  flex: 1 1 44%;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.case-meta {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--ink-0);
}
.case-study h3 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1.4;
  margin: 0;
  color: var(--ink-2);
}
.case-study p {
  color: var(--ink-1);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
  max-width: 44ch;
}

.case-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  margin-top: 6px;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-0);
  background: #fff;
  border: 1px solid var(--line-2);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease, background .2s ease;
}
.case-cta svg { transition: transform .2s ease; }
.case-cta:hover {
  background: var(--purple-50);
  border-color: var(--purple);
  color: var(--purple);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -10px rgba(var(--glow), 0.35);
}
.case-cta:hover svg { transform: translateX(2px); }

/* Side rail — scroll progress dots */
.case-rail {
  position: fixed;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.case-rail-dot {
  width: 12px;
  height: 12px;
  padding: 0;
  border: 1.5px solid var(--purple-300);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: transform .25s ease, border-color .25s ease;
}
.case-rail-dot span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--purple-300);
  transform: scale(0);
  transition: transform .25s ease;
}
.case-rail-dot.active {
  transform: scale(1.25);
  border-color: var(--purple);
}
.case-rail-dot.active span { transform: scale(1); }

@media (max-width: 1240px) {
  .case-rail { display: none; }
}

@media (max-width: 900px) {
  .case-study,
  .case-study.reverse {
    flex-direction: column;
    align-items: stretch;
    gap: 28px;
    padding: 48px 0;
  }
  .case-index { display: none; }
}

@media (max-width: 720px), (hover: none) {
  .case-media::before,
  .case-media::after { display: none; }
}

/* Staggered tag reveal on scroll-into-view */
.project-tags .project-tag {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .45s ease, transform .45s ease;
}
.project-tags.in-view .project-tag:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: .05s; }
.project-tags.in-view .project-tag:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: .15s; }
.project-tags.in-view .project-tag:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: .25s; }

/* Click-spark burst for the bottom CTA button */
.spark-particle {
  position: fixed;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--purple-300);
  pointer-events: none;
  z-index: 9999;
  top: 0;
  left: 0;
  animation: projects-spark-fly .55s ease-out forwards;
}
@keyframes projects-spark-fly {
  to {
    transform: translate(var(--tx), var(--ty)) scale(0);
    opacity: 0;
  }
}