/* ═══ CASE STUDIES — Dark theme (Pencil) ═══ */
.case-studies {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 64px var(--section-px);
  background: var(--noir-bg);
  overflow: hidden;
}

/* ── Grid background ── */
.case-studies__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(184, 150, 90, 0.15) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(184, 150, 90, 0.15) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
}

.case-studies__grid-fade-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 350px;
  background: linear-gradient(to bottom, var(--noir-bg) 40%, transparent);
  pointer-events: none;
  z-index: 1;
}

/* ── Glows ── */
.case-studies__glow {
  position: absolute;
  width: 400px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(184, 150, 90, 0.25) 0%, rgba(184, 150, 90, 0.10) 40%, transparent 70%);
  pointer-events: none;
}

.case-studies__glow--left {
  left: -150px;
  top: 300px;
}

.case-studies__glow--right {
  right: -150px;
  top: 300px;
}

/* ── Header ── */
.case-studies__header {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.case-studies__label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--brume);
}

.case-studies__titles {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.case-studies__title-bold {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--noir);
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.case-studies__title-italic {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 400;
  font-style: italic;
  color: var(--accent-text);
  line-height: 1.2;
}

.case-studies__title-single {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--noir);
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.case-studies__title-italic-inline {
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  color: var(--accent-text);
}

.case-studies__sub {
  font-family: var(--font-body);
  font-size: 15px;
  color: #9a9aa3;
  text-align: center;
}

/* ── Tabs (dark variant) ── */
.tabs__list {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}

.tabs__trigger--dark {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 40px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--gris-500);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.tabs__trigger--dark:hover {
  color: var(--noir);
}

.tabs__trigger--dark.tabs__trigger--active {
  background: var(--blanc);
  color: var(--noir);
}

/* ── Panels ── */
.cs-panel {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  background: none;
  padding: 0;
  border-radius: 0;
}

.cs-panel.tabs__panel--hidden {
  display: none;
}

.cs-panel.tabs__panel--visible {
  animation: tabFadeIn 0.35s ease;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Card grid ── */
.cs-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
  width: 100%;
}

.cs-grid-wrapper {
  position: relative;
  width: 100%;
  max-width: 1200px;
}

/* ── Product showcase card ── */
.cs-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  flex: 1;
}

/* ── Screenshot wrapper with perspective ── */
.cs-card__screenshot-wrap {
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  background: var(--noir-card);
  border: 1px solid var(--gris-200);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.08),
    0 2px 8px rgba(0, 0, 0, 0.04);
  transform: perspective(800px) rotateY(-2deg) rotateX(1deg);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.cs-card:hover .cs-card__screenshot-wrap {
  transform: perspective(800px) rotateY(0deg) rotateX(0deg) translateY(-6px);
  box-shadow:
    0 20px 48px rgba(184, 150, 90, 0.08),
    0 8px 32px rgba(0, 0, 0, 0.5);
}

.cs-card__screenshot {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
}

.cs-card__screenshot-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--noir-surface);
}

/* ── Body text ── */
.cs-card__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  padding: 0 8px;
}

.cs-card__name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--noir);
  margin: 0;
  letter-spacing: -0.5px;
}

.cs-card__desc {
  font-family: var(--font-body);
  font-size: 15px;
  font-style: italic;
  font-weight: 300;
  line-height: 1.6;
  color: var(--gris-400);
  margin: 0;
  max-width: 380px;
}

/* ── CTA link ── */
.cs-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--brume);
  text-decoration: none;
  transition: gap 0.3s ease, opacity 0.2s;
  margin-top: 4px;
}

.cs-card__cta:hover {
  gap: 16px;
  opacity: 0.85;
}

.cs-card__cta-arrow {
  display: inline-block;
  transition: transform 0.3s ease;
}

.cs-card__cta:hover .cs-card__cta-arrow {
  transform: translateX(4px);
}

/* ── Tablet ── */
@media (min-width: 768px) {
  .case-studies {
    padding: 96px 80px;
    gap: 48px;
  }

  .case-studies__title-bold,
  .case-studies__title-single {
    font-size: 40px;
    letter-spacing: 0.5px;
  }

  .case-studies__title-italic {
    font-size: 36px;
  }

  .tabs__list {
    flex-direction: row;
    gap: 12px;
    width: auto;
  }

  .cs-grid {
    flex-direction: row;
    gap: 32px;
    align-items: flex-start;
  }

  .cs-card__name {
    font-size: 26px;
  }
}

/* ── Desktop ── */
@media (min-width: 1024px) {
  .case-studies {
    padding: 96px 120px;
  }

  .case-studies__title-bold,
  .case-studies__title-single {
    font-size: 44px;
  }

  .case-studies__title-italic {
    font-size: 40px;
  }

  .cs-card__name {
    font-size: 28px;
  }

  .cs-card__desc {
    font-size: 16px;
  }
}