/*
  case-study.css
  Shared layout for individual case study pages.
  Per-page color themes are set via data-theme on <html>.
*/

/* Osteria Verdi (default) */
:root,
[data-theme="osteria-verdi"] {
  --cs-dark:      #1c1a17;
  --cs-dark-text: #e8e0d2;
}

[data-theme="hikari-sushi"] {
  --cs-dark:      #111814;
  --cs-dark-text: #cfd4ca;
}

[data-theme="holly-cafe"] {
  --cs-dark:      #2b2218;
  --cs-dark-text: #f0e8dc;
}

/* ============================
   Hero
   ============================ */

.cs-hero {
  padding: var(--space-xl) 0;
}

/* Dark variant — atmospheric background, white text */
.cs-hero--dark {
  background: var(--cs-dark);
  padding-top: calc(var(--space-xl) + 1rem);
}

.cs-hero-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cs-dark-text);
  opacity: 0.5;
  margin-bottom: var(--space-md);
  transition: opacity 0.2s ease;
}

.cs-hero-back:hover { opacity: 1; }

.cs-hero-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-xl);
  align-items: center;
}

.cs-hero-meta {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.cs-hero--dark .cs-hero-meta {
  color: var(--cs-dark-text);
  opacity: 0.5;
}

.cs-hero-heading {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.cs-hero--dark .cs-hero-heading { color: #fff; }

.cs-hero-summary {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 38ch;
  margin-bottom: var(--space-card);
}

.cs-hero--dark .cs-hero-summary {
  color: var(--cs-dark-text);
  opacity: 0.75;
}

.cs-hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.cs-hero-link:hover { color: var(--color-brand); }

.cs-hero--dark .cs-hero-link {
  color: var(--cs-dark-text);
  opacity: 0.8;
}

.cs-hero--dark .cs-hero-link:hover {
  color: #fff;
  opacity: 1;
}

.cs-hero-visual img { width: 100%; display: block; }

/* ============================
   Narrative
   ============================ */

.cs-narrative {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.cs-narrative-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-xl);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.cs-narrative-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.cs-narrative-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  padding-top: 0.15rem;
}

.cs-narrative-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 56ch;
  margin: 0;
}

/* ============================
   Showcase: desktop + phone on dark bg
   ============================ */

.cs-showcase {
  display: grid;
  grid-template-columns: 60% 40%;
  gap: 0;
  align-items: stretch;
}

.cs-showcase-desktop {
  background: var(--cs-dark);
  padding: var(--space-xl);
  display: flex;
  align-items: flex-end;
}

.cs-showcase-desktop img {
  width: 100%;
  display: block;
}

.cs-showcase-mobile {
  background: #ede8e0;
  padding: var(--space-xl);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.cs-showcase-mobile img {
  height: 100%;
  width: auto;
  max-width: 100%;
  display: block;
}

/* ============================
   Details: photo + project metadata
   ============================ */

.cs-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 500px;
}

.cs-details-photo { overflow: hidden; }

.cs-details-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cs-details-info {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--color-bg-subtle);
}

.cs-details-heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.cs-details-table { display: grid; }

.cs-details-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--space-xs);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.cs-details-row:last-child { border-bottom: none; }

.cs-details-key {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  padding-top: 0.1rem;
}

.cs-details-val {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* ============================
   CTA
   ============================ */

.cs-cta {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

/* ============================
   Responsive
   ============================ */

@media (max-width: 960px) {
  .cs-hero-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cs-narrative-row {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
    padding: var(--space-sm) 0;
  }

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

  .cs-showcase-desktop,
  .cs-showcase-mobile {
    padding: var(--space-md);
  }

  .cs-showcase-mobile { display: none; }

  .cs-details { grid-template-columns: 1fr; }
  .cs-details-photo { min-height: 300px; }
}

@media (max-width: 700px) {
  .cs-details-info { padding: var(--space-md); }
}
