/* ============================================================
   CASE STUDY — estilos compartidos
============================================================ */
:root {
  --bg:        #f5f2ee;
  --ink:       #1a1916;
  --ink-mid:   rgba(26,25,22,0.52);
  --accent:    #e8648a;
  --font-serif:'EB Garamond', Georgia, serif;
  --font-sans: 'DM Sans', -apple-system, sans-serif;
  --font-sys:  'Outfit', sans-serif;
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
}

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}
img { display:block; max-width:100%; height:auto; }
a   { color:inherit; text-decoration:none; }

/* NAV */
.case-nav {
  position: sticky;
  top: 0; z-index: 100;
  padding: 0.875rem clamp(1.5rem,6vw,5rem);
  background: rgba(245,242,238,0.90);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,0,0,0.07);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.case-back {
  font-family: var(--font-sys);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink-mid);
  letter-spacing: 0.03em;
  transition: color 150ms ease;
}
.case-back:hover { color: var(--ink); }
.case-nav-name {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9375rem;
  color: var(--ink-mid);
}

/* ARTICLE */
.case-article {
  max-width: 860px;
  margin: 0 auto;
  padding: 3.5rem clamp(1.5rem,6vw,4rem) 5rem;
}

/* HEADER */
.case-header { margin-bottom: 2.5rem; }

.case-category {
  font-family: var(--font-sys);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.625rem;
}
.case-title {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(2.25rem,6vw,4.5rem);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.625rem;
}
.case-client {
  font-family: var(--font-sys);
  font-size: 0.875rem;
  color: var(--ink-mid);
}

/* HERO */
.case-hero {
  margin-bottom: 2.75rem;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.10);
}
.case-hero img { width:100%; }

/* BODY */
.case-body {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 2.5rem;
  margin-bottom: 3rem;
  align-items: start;
}
.case-desc {
  font-family: var(--font-sys);
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink);
}
.case-meta {
  padding: 1.25rem 1.5rem;
  background: rgba(0,0,0,0.04);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.case-meta-item dt {
  font-family: var(--font-sys);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-mid);
  margin-bottom: 0.2rem;
}
.case-meta-item dd {
  font-family: var(--font-sys);
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--ink);
}

/* GALLERY */
.case-gallery {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 4rem;
}
.case-gallery img,
.case-gallery video {
  width: 100%;
  border-radius: 6px;
  display: block;
}

/* FOOTER */
.case-footer {
  border-top: 1px solid rgba(0,0,0,0.08);
  padding-top: 3rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}
.case-cta {
  font-family: var(--font-sys);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.7rem 2rem;
  border-radius: 999px;
  border: 1.5px solid var(--ink);
  transition: background 150ms ease, color 150ms ease;
  cursor: pointer;
}
.case-cta:hover { background:var(--ink); color:var(--bg); }
.case-cta--wa {
  background: #25D366;
  border-color: #25D366;
  color: #fff;
}
.case-cta--wa:hover { background:#1da851; border-color:#1da851; }

/* RESPONSIVE */
@media (max-width: 640px) {
  .case-body { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { transition-duration:0.01ms !important; }
}