/* ========================================
   Case Study — Nutrinova
   ======================================== */

/* ---- Hero ---- */
.case-hero {
  min-height: 80vh;
  display: flex;
  align-items: flex-end;
  padding: 8rem var(--gutter) var(--space-xl);
}

.case-hero__inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.case-hero__top {
  margin-bottom: var(--space-xl);
}

.case-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-dim);
  transition: color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.case-hero__back span {
  display: inline-block;
  transition: transform 0.7s cubic-bezier(.19, 1, .22, 1);
}

.case-hero__back::after {
  content: attr(data-text);
  position: absolute;
  left: 2rem;
  top: 100%;
  color: var(--color-accent);
  white-space: nowrap;
  transition: transform 0.7s cubic-bezier(.19, 1, .22, 1);
}

.case-hero__back:hover span {
  transform: translateY(-100%);
}

.case-hero__back:hover::after {
  transform: translateY(-100%);
}

.case-hero__back svg {
  transition: transform 0.3s var(--ease);
}

.case-hero__back:hover svg {
  transform: translateX(-3px);
}

.case-hero__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.case-hero__meta {
  margin-bottom: var(--space-md);
}

.case-hero__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 100px;
}

.case-hero__title {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.05em;
  margin-bottom: var(--space-md);
}

.case-hero__line {
  display: block;
}

.case-hero__line .char {
  display: inline-block;
  opacity: 0;
  filter: blur(8px);
  transform: translateY(30px);
  animation: charReveal 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes charReveal {
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

.case-hero__subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 300;
  line-height: 1.5;
  color: var(--color-text-dim);
  max-width: 640px;
  opacity: 0;
  filter: blur(8px);
  transform: translateY(20px);
  animation: blurFadeIn 0.8s ease-out forwards 0.5s;
}

/* ---- Full-width Images ---- */
.case-image {
  padding: 0 var(--gutter);
  margin-bottom: var(--space-xl);
}

.case-image--hero {
  margin-top: var(--space-lg);
}

.case-image__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.case-image__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  object-fit: cover;
}

/* ---- Content Sections ---- */
.case-section {
  padding: var(--space-xl) var(--gutter);
  border-top: 1px solid var(--color-border);
}

.case-section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.case-section__grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-xl);
}

.case-section__left {
  padding-top: 0.125rem;
}

.case-text--lead {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.case-text {
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--color-text-dim);
}

/* ---- Details Row ---- */
.case-section--details {
  border-top: none;
  padding-top: 0;
  padding-bottom: var(--space-xl);
}

.case-details {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.case-detail p {
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--color-text);
}

/* ---- Features List ---- */
.case-features {
  display: flex;
  flex-direction: column;
}

.case-features li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding-left 0.4s var(--ease);
}

.case-features li:first-child {
  border-top: 1px solid var(--color-border);
}

.case-features li:hover {
  padding-left: 1rem;
}

.case-features h3 {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  color: var(--color-text);
  transition: color 0.3s ease;
}

.case-features li:hover h3 {
  color: var(--color-accent);
}

.case-features p {
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-text-dim);
}

/* ---- CTA ---- */
.case-cta {
  padding: var(--space-2xl) var(--gutter);
  text-align: center;
}

.case-cta__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.case-cta__heading {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-lg);
}

.case-cta__heading em {
  font-style: italic;
  color: var(--color-text-dim);
}

.case-cta__button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 1rem 2.25rem;
  border-radius: 100px;
  transition: transform 0.3s var(--ease), background 0.3s ease;
}

.case-cta__button:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.85);
}

.case-cta__button svg {
  transition: transform 0.3s var(--ease);
}

.case-cta__button:hover svg {
  transform: translate(2px, -2px);
}

/* ---- Next Project ---- */
.case-next {
  padding: var(--space-xl) var(--gutter);
  border-top: 1px solid var(--color-border);
}

.case-next__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.case-next__link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding-left 0.4s var(--ease);
}

.case-next__link:hover {
  padding-left: 1.5rem;
}

.case-next__link h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  transition: color 0.3s ease;
}

.case-next__link:hover h2 {
  color: var(--color-accent);
}

.case-next__link span {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-dim);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .case-section__grid {
    grid-template-columns: 200px 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .case-hero {
    min-height: auto;
    padding-top: 7rem;
  }

  .case-hero__top {
    margin-bottom: var(--space-lg);
  }

  .case-hero__back {
    font-size: 0.9375rem;
  }

  .tag {
    font-size: 0.8125rem;
  }

  .case-text--lead {
    font-size: 1.125rem;
  }

  .case-text {
    font-size: 1.0625rem;
    line-height: 1.8;
  }

  .case-detail p {
    font-size: 1.0625rem;
  }

  .case-features h3 {
    font-size: 1.125rem;
  }

  .case-features p {
    font-size: 1rem;
    line-height: 1.7;
  }

  .case-next__link span {
    font-size: 1rem;
  }

  .case-section__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .case-details {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .case-image__img {
    border-radius: 10px;
  }
}

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