/* Casos de estudio (página aparte). Usa las variables y tipografías de v2.css. */
.cs-page { background: var(--bgsub, #070707); }
.cs-page main { overflow-x: clip; }
.cs-hero { padding: clamp(130px, 20vh, 200px) var(--pad) clamp(40px, 8vh, 90px); display: grid; gap: clamp(16px, 2.6vh, 26px); max-width: 1500px; }
.cs-back { width: fit-content; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(239,236,229,0.75); border-bottom: 1px solid rgba(215,242,74,0.5); padding-bottom: 4px; }
.cs-back:hover { color: var(--lime); }
.cs-kicker { color: #fff; }
.cs-hero h1 em { color: var(--lime); }
.cs-intro { max-width: 40em; font-size: clamp(16px, 1.45vw, 22px); line-height: 1.55; color: rgba(239,236,229,0.86); }
.cs-index { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.cs-index a { display: inline-flex; gap: 10px; align-items: baseline; padding: 10px 16px; border: 1px solid rgba(215,242,74,0.35); border-radius: 999px; font-size: 14px; color: rgba(239,236,229,0.9); transition: background 0.2s ease, color 0.2s ease; }
.cs-index a span { font-size: 11px; letter-spacing: 0.16em; color: var(--lime); }
.cs-index a:hover { background: var(--lime); color: #0a0a0a; }
.cs-index a:hover span { color: #0a0a0a; }
.cs { scroll-margin-top: 90px; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr); gap: clamp(26px, 4vw, 70px); padding: clamp(50px, 9vh, 100px) var(--pad); border-top: 1px solid rgba(239,236,229,0.14); }
.cs-head { display: grid; gap: 14px; align-content: start; }
.cs-n { font-family: var(--serif); font-style: italic; font-size: clamp(22px, 2vw, 30px); color: var(--lime); }
.cs-tag { font-size: 11px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(239,236,229,0.65); }
.cs-title { margin: 2px 0 8px; }
.cs-metrics { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.cs-metrics li { display: grid; gap: 4px; padding: 16px 0; border-top: 1px solid rgba(215,242,74,0.28); }
.cs-metrics li:last-child { border-bottom: 1px solid rgba(215,242,74,0.28); }
.cs-metrics b { font-family: var(--serif); font-weight: 400; font-size: clamp(38px, 4.4vw, 72px); line-height: 1; color: var(--lime); }
.cs-metrics span { font-size: clamp(13px, 1vw, 15px); letter-spacing: 0.04em; color: rgba(239,236,229,0.8); }
.cs-body { display: grid; gap: clamp(20px, 3vh, 32px); align-content: start; }
.cs-text { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(18px, 2.4vw, 40px); }
.cs-text h3 { font-size: 11px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; color: var(--lime); margin-bottom: 10px; }
.cs-text p { font-size: clamp(15px, 1.2vw, 18px); line-height: 1.6; color: rgba(239,236,229,0.9); }
.cs-video { position: relative; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden; border: 1px solid rgba(215,242,74,0.4); background: #0b0b0b; }
.cs-video img { width: 100%; height: 100%; object-fit: cover; opacity: 0.8; }
.cs-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.cs-play { position: absolute; left: 50%; top: 50%; translate: -50% -50%; width: 78px; height: 78px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 10px rgba(215,242,74,0.18), 0 10px 30px rgba(0,0,0,0.5); transition: transform 0.2s ease; }
.cs-play:hover { transform: scale(1.06); }
.cs-play i { position: absolute; left: 52%; top: 50%; translate: -50% -50%; border-style: solid; border-width: 13px 0 13px 21px; border-color: transparent transparent transparent #0a0a0a; }
.cs-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(12px, 1.4vw, 20px); }
.cs-ph { aspect-ratio: 4 / 3; display: grid; place-items: center; border: 1px dashed rgba(215,242,74,0.5); border-radius: 18px; background: radial-gradient(70% 60% at 50% 50%, rgba(215,242,74,0.08), transparent 70%), #0b0b0b; }
.cs-ph span { font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(239,236,229,0.6); }
.cs-cta { display: grid; gap: 18px; justify-items: start; padding: clamp(70px, 12vh, 140px) var(--pad); border-top: 1px solid rgba(239,236,229,0.14); }
.cs-cta .tiny { color: #fff; }
.cs-cta p { max-width: 36em; color: rgba(239,236,229,0.85); line-height: 1.55; }
.cs-anim { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s var(--ease); }
.cs-anim.is-in { opacity: 1; transform: none; }
.hdr .nav a[aria-current="page"] { color: var(--lime); }
@media (max-width: 860px) {
  .cs { grid-template-columns: 1fr; }
  .cs-text { grid-template-columns: 1fr; }
  .cs-metrics b { font-size: clamp(34px, 11vw, 52px); }
  .cs-play { width: 64px; height: 64px; }
}
.cs-page .rail, .cs-page .progress { display: none !important; }

.cs-fig { margin: 0; display: grid; gap: 8px; }
.cs-fig img { width: 100%; height: auto; aspect-ratio: 1400 / 781; object-fit: contain; border-radius: 18px; border: 1px solid rgba(215,242,74,0.4); background: #000; }
.cs-fig figcaption { font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(239,236,229,0.6); }
/* en el caso de layout, el diagrama ocupa todo el ancho (es apaisado y tiene texto chico) */

/* Imagen dentro de un contenedor igual a los demás (4:3), completa y con lupa para ampliar */
.cs-fig { position: relative; aspect-ratio: 4 / 3; border-radius: 18px; border: 1px solid rgba(215,242,74,0.4); background: #000; overflow: hidden; }
.cs-fig img { position: absolute; inset: 0; width: 100%; height: 100%; aspect-ratio: auto; object-fit: contain; border: 0; border-radius: 0; }
.cs-zoom { position: absolute; right: 12px; bottom: 12px; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--lime); box-shadow: 0 6px 18px rgba(0,0,0,0.5); transition: transform 0.2s ease; }
.cs-zoom:hover { transform: scale(1.08); }
.cs-zoom svg { width: 22px; height: 22px; fill: none; stroke: #0a0a0a; stroke-width: 2.2; stroke-linecap: round; }
.cs-lb { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 24px; background: rgba(0,0,0,0.92); cursor: zoom-out; }
.cs-lb[hidden] { display: none; }
.cs-lb img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 10px; cursor: default; }
.cs-lb-x { position: absolute; top: 14px; right: 20px; font-size: 38px; line-height: 1; color: #fff; }
.cs-lb-x:hover { color: var(--lime); }

/* Video del mismo alto que las imágenes de los otros casos (antes ocupaba todo el ancho) */
@media (min-width: 861px) { .cs-video { width: calc((100% - clamp(12px, 1.4vw, 20px)) * 0.667); } }
/* Visor de la lupa: tamaño contenido, fondo difuminado, la imagen crece desde su miniatura */
.cs-fig img { cursor: zoom-in; }
.cs-lb { background: rgba(4,5,3,0.78); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); padding: 0; cursor: zoom-out; }
.cs-lb img { width: min(1100px, 86vw); height: auto; max-height: 80vh; max-width: none; object-fit: contain; border-radius: 14px; border: 1px solid rgba(215,242,74,0.55); box-shadow: 0 30px 90px rgba(0,0,0,0.75), 0 0 40px rgba(215,242,74,0.12); background: #000; transform-origin: 0 0; cursor: zoom-out; will-change: transform; }
.cs-lb-x { top: 18px; right: 22px; width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(215,242,74,0.6); background: rgba(10,10,10,0.8); font-size: 26px; display: grid; place-items: center; }