/**
 * caso.css
 * Estilos para páginas de caso de estudio (/proyectos/<slug>).
 * Depende de: base.css (variables), projects.css (.page-hd, .ph-*)
 */

/* ── Hero del proyecto ──────────────────────────────────────────────── */

.caso-hero {
  position: relative;
  z-index: 1;
  padding: 0 1rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.caso-back {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 2rem;
  color: var(--text-3);
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color .25s;
}

.caso-back:hover {
  color: var(--gold);
}

.caso-hero-title {
  font-size: clamp(1.6rem, 6vw, 2.6rem);
  font-weight: 300;
  line-height: 1.12;
  margin-bottom: 2rem;
}

.caso-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.caso-meta-item {
  padding: .9rem 1.1rem;
  background: var(--surface);
}

.caso-meta-label {
  color: var(--text-3);
  font-size: .55rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: .3rem;
}

.caso-meta-value {
  color: var(--text);
  font-size: .88rem;
  font-weight: 500;
}

.caso-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

/* ── Secciones del caso ─────────────────────────────────────────────── */

.caso-section {
  position: relative;
  z-index: 1;
  padding: 2.5rem 1rem;
  border-bottom: 1px solid var(--border);
}

.caso-section .s-label {
  margin-bottom: 1.2rem;
}

.caso-section-title {
  font-size: clamp(1.2rem, 4vw, 1.55rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.caso-section p {
  color: var(--text-2);
  font-size: .95rem;
  line-height: 1.75;
  max-width: 72ch;
}

.caso-section p + p {
  margin-top: .9rem;
}

/* ── Cards de decisiones técnicas ───────────────────────────────────── */

.caso-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--border);
  margin-top: 1.5rem;
}

.caso-card {
  padding: 1.4rem;
  background: var(--surface);
  transition: background .25s;
}

.caso-card:hover {
  background: var(--bg-raised);
}

.caso-card-num {
  color: var(--gold-line);
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: .6rem;
}

.caso-card-title {
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .55rem;
}

.caso-card-desc {
  color: var(--text-2);
  font-size: .88rem;
  line-height: 1.65;
}

/* ── Stack tecnológico ──────────────────────────────────────────────── */

.caso-stack {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: 1.5rem;
}

.caso-tag {
  padding: .38rem .82rem;
  border: 1px solid var(--gold-line);
  background: var(--gold-dim);
  border-radius: 2px;
  color: var(--gold);
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ── CTA final ──────────────────────────────────────────────────────── */

.caso-cta {
  position: relative;
  z-index: 1;
  padding: 3.5rem 1rem;
  text-align: center;
}

.caso-cta-label {
  color: var(--gold);
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.caso-cta-title {
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 1.8rem;
}

.caso-cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* ── Responsive — desktop ───────────────────────────────────────────── */

@media (min-width: 640px) {
  .caso-meta {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 760px) {
  .caso-hero {
    padding-top: 1rem;
    padding-bottom: 3rem;
  }

  .caso-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .caso-section {
    padding: 3.5rem 1rem;
  }
}

@media (min-width: 1024px) {
  .caso-hero,
  .caso-section,
  .caso-cta {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }

  /* Two-column layout: sticky label sidebar + content */
  .caso-section {
    display: grid;
    grid-template-columns: 140px 1fr;
    column-gap: 4rem;
    align-items: start;
  }

  .caso-section .s-label {
    grid-column: 1;
    grid-row: 1 / span 20;
    position: sticky;
    top: 5.5rem;
    margin-bottom: 0;
  }

  .caso-section > *:not(.s-label) {
    grid-column: 2;
  }

  /* Paragraphs fill the column — no need for hard 72ch cap inside the grid */
  .caso-section p {
    max-width: 68ch;
  }

  .caso-cards {
    grid-template-columns: repeat(2, 1fr);
    margin-left: 0;
    margin-right: 0;
  }
}

@media (min-width: 1280px) {
  .caso-hero,
  .caso-section,
  .caso-cta {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
  }
}