/* ============================================================
   styles/case-study.css  — Styles for case study pages
   ============================================================ */

.cs-main {
  padding-top: var(--nav-h);
}

/* ─── BACK LINK ─── */
.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-3);
  margin-bottom: 2.5rem;
  transition: color 0.2s, gap 0.2s;
}
.cs-back:hover { color: var(--gold); gap: 0.75rem; }
.cs-back i { font-size: 0.75rem; transition: transform 0.2s; }
.cs-back:hover i { transform: translateX(-3px); }

/* ─── TAGS ─── */
.cs-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.85rem;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--gold);
  color: #fff;
}

.cs-tag--outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink-3);
}

/* ─── HERO ─── */
.cs-hero {
  padding: 3rem 0 0;
  overflow: hidden;
  position: relative;
}

/* Decorative background word */
.cs-hero__bg-word {
  position: absolute;
  font-family: var(--font-display);
  font-size: clamp(100px, 18vw, 260px);
  font-weight: 600;
  color: transparent;
  -webkit-text-stroke: 1px var(--border);
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  opacity: 0.55;
  z-index: 0;
  letter-spacing: 0.05em;
  padding-bottom: 2rem;
}

.cs-hero__container {
  position: relative;
  z-index: 1;
}

/* Stagger entrance animation */
.cs-anim {
  opacity: 0;
  transform: translateY(22px);
  animation: csIn 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: var(--d, 0s);
}
@keyframes csIn {
  to { opacity: 1; transform: translateY(0); }
}

/* Ensure all section content is visible —
   case study is a reading page, not a landing page.
   Override main.css reveal animation classes so nothing
   gets stuck invisible waiting for IntersectionObserver. */
.cs-main .reveal,
.cs-main .reveal-left,
.cs-main .reveal-right,
.cs-main .stagger,
.cs-main .stagger > * {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

.cs-hero__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.cs-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  color: var(--ink);
  line-height: 1.05;
  margin-bottom: 1.25rem;
}
.cs-hero__title em { font-style: italic; color: var(--gold); }

.cs-hero__lead {
  font-size: 1.1rem;
  color: var(--ink-2);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.cs-hero__stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  padding-top: 2rem;
  margin-bottom: 3.5rem;
  border-top: 1px solid var(--border);
}

.cs-stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 500;
  color: var(--gold);
  line-height: 1;
}

.cs-stat__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.3rem;
}

/* Floating chips */
.cs-hero__chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink);
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  z-index: 1;
  animation: csIn 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards, chipFloat 3s ease-in-out infinite;
}
.cs-hero__chip i { color: var(--gold); font-size: 0.72rem; }

.cs-hero__chip--tl {
  top: 18%;
  right: 12%;
  animation-delay: var(--d, 0s), 0.7s;
}
.cs-hero__chip--tr {
  top: 42%;
  right: 6%;
  animation-delay: var(--d, 0s), 1.4s;
}

@keyframes chipFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

/* Hero image */
.cs-hero__img-wrap {
  width: 100%;
  max-height: 600px;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border: 1px solid var(--border);
  border-bottom: none;
  margin-top: 1rem;
}

.cs-hero__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

/* Scroll hint */
.cs-hero__scroll-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  animation: fadeInUp 1s 1.2s cubic-bezier(0.4, 0, 0.2, 1) both;
  pointer-events: none;
}

.cs-hero__scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 1.5s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ─── SECTIONS ─── */
.cs-section {
  padding: 5rem 0;
}

.cs-section--alt {
  background: var(--bg-alt);
}

.cs-section__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.cs-section__label::before {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

.cs-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

/* ─── LAYOUT ─── */
.cs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 5rem;
  align-items: start;
}

.cs-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.cs-info-block h4 {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.35rem;
}

.cs-info-block p {
  font-size: 0.9rem;
  color: var(--ink-2);
  line-height: 1.6;
}

.cs-content p {
  font-size: 0.975rem;
  color: var(--ink-2);
  line-height: 1.85;
  margin-bottom: 1.25rem;
}
.cs-content p:last-child { margin-bottom: 0; }
.cs-content p em { font-style: italic; color: var(--ink); }

/* ─── PROCESS STEPS ─── */
.cs-process-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.cs-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cs-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.cs-step:first-child { border-top: 1px solid var(--border); }

.cs-step__num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 500;
  color: var(--gold);
  opacity: 0.35;
  line-height: 1;
  padding-top: 0.2rem;
  flex-shrink: 0;
}

.cs-step__body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

.cs-step__body p {
  font-size: 0.95rem;
  color: var(--ink-2);
  line-height: 1.85;
  margin-bottom: 1rem;
}
.cs-step__body p:last-child { margin-bottom: 0; }
.cs-step__body p em { font-style: italic; color: var(--ink); }

/* Callout block */
.cs-callout {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
}

.cs-callout i {
  color: var(--gold);
  font-size: 1rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.cs-callout p {
  font-size: 0.88rem !important;
  color: var(--ink-2) !important;
  margin-bottom: 0 !important;
  line-height: 1.7 !important;
}

.cs-callout strong { color: var(--ink); font-weight: 600; }

/* ─── GALLERY / DRAG SCROLL ─── */
.cs-gallery-section {
  overflow: hidden;
  padding-bottom: 0;
}

.cs-gallery-header {
  text-align: center;
  margin-bottom: 2rem;
}

.cs-gallery-hint {
  font-size: 0.78rem;
  color: var(--ink-3);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.cs-gallery-hint i {
  color: var(--gold);
  font-size: 0.75rem;
}

/* Scroll wrapper — full bleed, edge to edge, user scrolls */
.cs-marquee-wrap {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 1.5rem 0 3rem;
  cursor: grab;
  /* Fade edges (disabled for now)
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 6%,
    black 94%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 6%,
    black 94%,
    transparent 100%
  );*/
  /* Smooth momentum scrolling on iOS */
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  /* Hide scrollbar visually */
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.cs-marquee-wrap::-webkit-scrollbar {
  display: none;
}

.cs-marquee-wrap.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
  user-select: none;
}

.cs-marquee {
  display: flex;
  width: 100%;
}

/* Track — no animation, just flex row */
.cs-marquee__track {
  display: flex;
  gap: 1.25rem;
  padding: 0 5vw;
  /* No animation — user scrolls */
}

.cs-marquee__item {
  flex-shrink: 0;
  width: 340px;
  height: 340px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1),
              box-shadow 0.3s cubic-bezier(0.4,0,0.2,1);
  /* Prevent images from blocking drag */
  pointer-events: none;
}

/* Re-enable hover only when not dragging */
.cs-marquee-wrap:not(.is-dragging) .cs-marquee__item {
  pointer-events: auto;
}

.cs-marquee-wrap:not(.is-dragging) .cs-marquee__item:hover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.cs-marquee__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  /* Prevent native image drag interfering */
  -webkit-user-drag: none;
  user-drag: none;
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}

.cs-marquee-wrap:not(.is-dragging) .cs-marquee__item:hover img {
  transform: scale(1.04);
}

/* Reduced motion — just show images stacked */
@media (prefers-reduced-motion: reduce) {
  .cs-marquee-wrap {
    -webkit-mask-image: none;
    mask-image: none;
  }
}

@media (max-width: 640px) {
  .cs-marquee__item {
    width: 260px;
    height: 260px;
  }
  .cs-marquee-wrap {
    padding: 1rem 0 2.5rem;
  }
  .cs-marquee__track {
    padding: 0 4vw;
  }
}

/* Alternative gallery style — static grid */
.cs-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--border);
}

.cs-gallery__item img {
  width: 100%;
  height: auto;
  display: block;
}

/* ─── OUTCOMES ─── */
.cs-outcomes {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cs-outcome-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s;
}

.cs-outcome-item:hover { border-color: var(--gold-border); }

.cs-outcome-item > i {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  color: var(--gold);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.cs-outcome-item div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cs-outcome-item strong {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
}

.cs-outcome-item span {
  font-size: 0.8rem;
  color: var(--ink-3);
}

/* ─── MORE CASE STUDIES ─── */
.cs-more {
  padding: 5rem 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.cs-more__header {
  text-align: center;
  margin-bottom: 3rem;
}

.cs-more__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.cs-more-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}

.cs-more-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gold-border);
}

.cs-more-card__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.cs-more-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease);
}

.cs-more-card:hover .cs-more-card__img img { transform: scale(1.05); }

.cs-more-card__body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cs-more-card__body .cs-tag {
  background: transparent;
  color: var(--gold);
  padding: 0;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.cs-more-card__body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.cs-more-card__body .case-card__cta {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: gap 0.2s;
}
.cs-more-card:hover .case-card__cta { gap: 0.7rem; }

/* ─── PORTFOLIO CTA (reused from portfolio.css) ─── */
.portfolio-cta {
  padding: 5.5rem 0;
  background: #0f0f0f;
  position: relative;
  overflow: hidden;
}

.portfolio-cta::before {
  content: "LET'S TALK";
  position: absolute;
  font-family: var(--font-display);
  font-size: clamp(80px, 14vw, 200px);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.03);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: -0.02em;
}

.portfolio-cta__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
}

.portfolio-cta__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.portfolio-cta__eyebrow::before {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--gold);
}

.portfolio-cta__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.portfolio-cta__title em { font-style: italic; color: var(--gold); }

.portfolio-cta__text p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.95rem;
  max-width: 420px;
  line-height: 1.7;
}

.portfolio-cta__actions {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex-shrink: 0;
}

.portfolio-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
  min-width: 220px;
  justify-content: center;
}

.portfolio-cta__btn--primary {
  background: var(--gold);
  color: #fff;
  box-shadow: 0 4px 16px rgba(189, 131, 49, 0.35);
}

.portfolio-cta__btn--primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(189, 131, 49, 0.4);
}

.portfolio-cta__btn--secondary {
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.portfolio-cta__btn--secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .cs-hero__chip { display: none; }

  .cs-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .cs-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
  }

  .cs-step {
    grid-template-columns: 60px 1fr;
    gap: 1.5rem;
  }

  .cs-step__num { font-size: 2rem; }

  .portfolio-cta__inner { flex-direction: column; text-align: center; }
  .portfolio-cta__eyebrow { justify-content: center; }
  .portfolio-cta__text p { margin: 0 auto; }
  .portfolio-cta__actions { width: 100%; flex-direction: row; justify-content: center; flex-wrap: wrap; }
  .portfolio-cta__btn { min-width: auto; flex: 1; max-width: 260px; }
}

@media (max-width: 640px) {
  .cs-hero__bg-word { opacity: 0.3; font-size: clamp(70px, 22vw, 130px); }
  .cs-hero__scroll-hint { display: none; }
  .cs-hero__stats { gap: 1.5rem; }
  .cs-stat__num { font-size: 1.75rem; }

  .cs-step {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .cs-step__num { font-size: 1.5rem; opacity: 0.25; }

  .cs-sidebar { grid-template-columns: 1fr 1fr; }

  .cs-more__grid { grid-template-columns: 1fr; max-width: 400px; }

  .portfolio-cta__actions { flex-direction: column; align-items: center; }
  .portfolio-cta__btn { width: 100%; max-width: 320px; }
}

@media (max-width: 480px) {
  .cs-sidebar { grid-template-columns: 1fr; }
}