/* ============================================
   Adyanth Natarajan — Portfolio
   Case study page styles
   ============================================ */

.case-study section,
.cs-next {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* -------------------- Shared label -------------------- */

.cs-label {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-variant: small-caps;
  color: var(--text);
  opacity: 0.5;
  margin-bottom: 20px;
}

.cs-label-light {
  opacity: 0.4;
}

.cs-label-accent {
  color: var(--accent);
  opacity: 1;
}

.cs-rule {
  border: none;
  border-top: 1px solid var(--divider);
  margin-top: 0;
  margin-bottom: 0;
}

/* -------------------- Back link -------------------- */

.cs-back-link-wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 24px var(--gutter) 0;
}

.cs-back-link {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--text);
  opacity: 0.45;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.cs-back-link:hover {
  opacity: 1;
  color: var(--accent);
}

/* -------------------- Hero -------------------- */

.cs-hero {
  padding-top: 56px;
  padding-bottom: 48px;
}

.cs-tag {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-bottom: 24px;
}

.cs-headline {
  font-family: var(--font-headline);
  font-weight: 400;
  font-size: clamp(2.4rem, 6.5vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  max-width: 18ch;
  margin-bottom: 24px;
}

.cs-outcome-statement {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.55;
  color: var(--text);
  opacity: 0.6;
  max-width: 56ch;
  margin-bottom: 32px;
}

.cs-meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* -------------------- Overview -------------------- */

.cs-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  padding-top: 64px;
  padding-bottom: 64px;
}

.cs-col p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.7;
  max-width: 56ch;
  margin-bottom: 18px;
}

.cs-col p:last-child {
  margin-bottom: 0;
}

/* -------------------- Constraints -------------------- */

.cs-constraints {
  background: var(--surface);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
  padding-left: 0;
  padding-right: 0;
  max-width: none;
}

.cs-constraints-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 64px var(--gutter);
}

.cs-constraints-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px var(--gutter);
}

.cs-constraint-item h3 {
  font-family: var(--font-headline);
  font-weight: 500;
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  letter-spacing: -0.005em;
  margin-bottom: 12px;
}

.cs-constraint-item p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
  opacity: 0.6;
  max-width: 50ch;
}

/* -------------------- Process -------------------- */

.cs-process {
  padding-top: 80px;
  padding-bottom: 80px;
}

.cs-process-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.cs-process-block + .cs-process-block {
  margin-top: 88px;
}

.cs-process-block-reverse .cs-process-text {
  order: 2;
}

.cs-process-block-reverse .cs-process-media {
  order: 1;
}

.cs-process-text p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.7;
  max-width: 56ch;
  margin-bottom: 16px;
}

.cs-process-text p:last-child {
  margin-bottom: 0;
}

.cs-process-text strong {
  color: var(--text);
  opacity: 1;
  font-weight: 500;
}

/* -------------------- Placeholders -------------------- */

.cs-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--surface);
  border: 1px solid var(--divider);
}

.cs-image {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--divider);
  border-radius: 0;
}

.cs-placeholder-caption {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text);
  opacity: 0.4;
  margin-top: 12px;
  text-align: center;
}

.cs-placeholder-nda {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.cs-placeholder-nda-icon {
  font-size: 18px;
  opacity: 0.5;
}

.cs-placeholder-nda-label {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text);
  opacity: 0.4;
  text-align: center;
}

/* -------------------- Solution -------------------- */

.cs-solution {
  padding-top: 64px;
  padding-bottom: 80px;
  border-top: 1px solid var(--divider);
}

.cs-solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
}

.cs-annotation {
  font-family: var(--font-label);
  font-style: italic;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--text);
  opacity: 0.55;
  margin-top: 14px;
}

/* -------------------- Outcome -------------------- */

.cs-outcome {
  background: var(--surface);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
  padding-left: 0;
  padding-right: 0;
  max-width: none;
}

.cs-outcome-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 80px var(--gutter);
}

.cs-outcome-headline {
  font-family: var(--font-headline);
  font-weight: 400;
  font-size: clamp(1.7rem, 4.4vw, 2.6rem);
  line-height: 1.3;
  letter-spacing: -0.005em;
  max-width: 24ch;
  margin-bottom: 40px;
}

.cs-outcome-inner > p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.65;
  max-width: 64ch;
  margin-bottom: 20px;
}

.cs-outcome-inner > .cs-label {
  margin-top: 48px;
}

/* -------------------- Next project -------------------- */

.cs-next {
  display: block;
  text-align: center;
  padding-top: 88px;
  padding-bottom: 88px;
}

.cs-next-headline {
  font-family: var(--font-headline);
  font-weight: 400;
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.cs-next-arrow {
  display: inline-block;
  transition: transform 0.25s ease, color 0.25s ease;
}

.cs-next:hover .cs-next-arrow {
  color: var(--accent);
  transform: translateX(8px);
}

.cs-next-sub {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text);
  opacity: 0.5;
  transition: opacity 0.2s ease;
}

.cs-next:hover .cs-next-sub {
  opacity: 1;
}

/* -------------------- Split page (Earlier Work) -------------------- */

.cs-split-heading {
  padding-top: 56px;
  padding-bottom: 32px;
}

.cs-split-heading h1 {
  font-family: var(--font-headline);
  font-weight: 400;
  font-size: clamp(2.4rem, 6.5vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.cs-split-heading p {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text);
  opacity: 0.4;
}

.cs-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--divider);
  padding-left: 0;
  padding-right: 0;
  max-width: none;
}

.cs-split-col {
  max-width: var(--container-max);
  padding: 56px calc(var(--gutter) / 2 + var(--gutter)) 80px calc(var(--gutter) / 2 + var(--gutter));
}

.cs-split-col:first-child {
  border-right: 1px solid var(--divider);
  margin-left: auto;
  padding-left: var(--gutter);
}

.cs-split-col:last-child {
  margin-right: auto;
  padding-right: var(--gutter);
}

.cs-split-col-title {
  font-family: var(--font-headline);
  font-weight: 400;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.cs-split-outcome {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  opacity: 0.6;
  max-width: 48ch;
  margin-bottom: 28px;
}

.cs-split-rule {
  border: none;
  border-top: 1px solid var(--divider);
  margin: 32px 0;
}

.cs-split-section + .cs-split-section {
  margin-top: 40px;
}

@media (max-width: 860px) {
  .cs-split-grid {
    grid-template-columns: 1fr;
  }

  .cs-split-col,
  .cs-split-col:first-child,
  .cs-split-col:last-child {
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
  }

  .cs-split-col:first-child {
    border-right: none;
    border-bottom: 1px solid var(--divider);
  }
}

/* -------------------- Responsive -------------------- */

@media (max-width: 860px) {
  .cs-overview,
  .cs-constraints-grid,
  .cs-solution-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cs-process-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cs-process-block-reverse .cs-process-text,
  .cs-process-block-reverse .cs-process-media {
    order: initial;
  }
}

@media (max-width: 480px) {
  .cs-hero {
    padding-top: 32px;
  }

  .cs-process-block + .cs-process-block {
    margin-top: 56px;
  }
}