/* ============================================================
   CASOS — Diseño de Claude Design (Casos.dc.html)
   Título, filtros por industria y solución, y la grilla de casos.
   ============================================================ */

@keyframes csRise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.cs { background: var(--ec-white); color: var(--ec-ink); }
.cs-sec { padding: calc(80px + clamp(48px, 7vw, 96px)) 0 clamp(72px, 10vw, 120px); }

.cs-rise { animation: csRise .7s var(--ease-out) both; }
.cs .eyebrow.cs-rise { animation-duration: .6s; }
.cs-title.cs-rise { animation-delay: .08s; }
.cs-filtros.cs-rise { animation-delay: .16s; }

.cs-title {
  margin-top: 16px; max-width: 980px;
  font-family: var(--fh); font-weight: 700;
  font-size: clamp(38px, 5.4vw, 80px); line-height: 1.02; letter-spacing: -.028em;
  color: var(--ec-navy); text-wrap: balance;
}
.cs-rule { width: 32px; height: 3px; margin-top: 28px; background: var(--ec-blue); }

/* ---------- Filtros ---------- */
.cs-filtros { margin-top: clamp(40px, 5vw, 56px); display: flex; flex-direction: column; gap: 14px; }
.cs-filtro { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.cs-filtro__label { width: 84px; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--ec-muted); }
.cs-filtro button {
  padding: 9px 16px; border-radius: 999px;
  border: 1px solid var(--ec-border); background: var(--ec-white); color: var(--ec-navy);
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}
.cs-filtro button:hover { border-color: var(--ec-blue); }
.cs-filtro button[aria-pressed="true"] { border-color: var(--ec-navy); background: var(--ec-navy); color: var(--ec-white); }
.cs-filtro button:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(28,128,189,.35); }

.cs-conteo { margin-top: 32px; font-size: 13px; color: var(--ec-muted); }

/* ---------- Casos ---------- */
.cs-grid { margin-top: 16px; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 360px), 1fr)); gap: 20px; }
.cs-card {
  display: flex; flex-direction: column; justify-content: space-between; gap: 28px;
  min-height: 300px; padding: clamp(26px, 3vw, 36px);
  border-radius: 10px; border: 1px solid var(--ec-border);
  background: var(--ec-white); color: var(--ec-navy);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  transition: transform .3s var(--ease), box-shadow .3s;
}
.cs-card:hover { transform: translateY(-6px); box-shadow: 0 8px 28px rgba(20,24,44,.14); }
.cs-card.is-entrando { animation: csRise .5s var(--ease-out) var(--d, 0ms) both; }
.cs-card__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.cs-card__tags span {
  padding: 5px 10px; border-radius: 999px;
  background: var(--ec-card); color: var(--ec-navy);
  font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
}
.cs-card__num {
  margin-top: 28px;
  font-family: var(--fh); font-weight: 700;
  font-size: clamp(48px, 5vw, 72px); line-height: .95; letter-spacing: -.03em;
  color: var(--ec-blue);
}
.cs-card__txt { margin-top: 16px; max-width: 520px; font-size: 17px; line-height: 1.5; color: var(--ec-ink); }
.cs-card__pie {
  padding-top: 16px; border-top: 1px solid var(--ec-border);
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap;
}
.cs-card__cliente { font-size: 14px; font-weight: 600; }
.cs-card__nota { font-size: 12px; color: var(--ec-muted); }

/* Un número que es una palabra ("Segundos") no entra en la columna al tamaño de las cifras */
.cs-card__num--palabra { font-size: clamp(40px, 4vw, 60px); }

/* El caso fundacional: oscuro y a dos columnas */
.cs-card--big { border-color: var(--ec-navy); background: var(--ec-navy); color: var(--ec-white); }
.cs-card--big .cs-card__tags span { background: var(--ec-navy-card); color: var(--ec-on-navy-dim); }
.cs-card--big .cs-card__num { font-size: clamp(72px, 9vw, 128px); color: var(--ec-blue-soft); }
.cs-card--big .cs-card__txt { color: var(--ec-on-navy-dim); }
.cs-card--big .cs-card__pie { border-top-color: var(--ec-navy-hair); }
.cs-card--big .cs-card__nota { color: var(--ec-on-navy-faint); }
@media (min-width: 820px) { .cs-card--big { grid-column: span 2; } }

.cs-vacio { margin-top: 16px; padding: 40px; border-radius: 10px; background: var(--ec-card); text-align: center; }
.cs-vacio p { font-size: 17px; color: var(--ec-navy); }
.cs-vacio button {
  margin-top: 14px; padding: 0; border: 0; background: transparent; cursor: pointer;
  font-size: 15px; font-weight: 600; color: var(--ec-blue);
}
.cs-vacio button:hover { color: var(--ec-blue-link-hover); }

@media (prefers-reduced-motion: reduce) {
  .cs-rise, .cs-card.is-entrando { animation: none; }
  .cs-card { transition: none; }
}