/* ═══════════════════════════════════════════════════════════════
   RIVEL Case Studies — shared stylesheet (hub + detail pages, EN/ES)
   Extracted 2026-06 from the per-page <style> blocks (8 identical
   copies) and retuned to the brand world: #050505 canvas, violet
   #9c43fe family, canonical holo gradient from rivel-global.css.
   ═══════════════════════════════════════════════════════════════ */

/* display fonts (same files the home loads) */
@font-face { font-family: 'PP Neue Machina'; font-weight: 400; font-style: normal; font-display: swap; src: url('../fonts/PPNeueMachina-PlainRegular.otf') format('opentype'); }
@font-face { font-family: 'PP Neue Machina'; font-weight: 800; font-style: normal; font-display: swap; src: url('../fonts/PPNeueMachina-PlainUltrabold.otf') format('opentype'); }
@font-face { font-family: 'PP Editorial New'; font-weight: 400; font-style: italic; font-display: swap; src: url('../fonts/PPEditorialNew-Italic.otf') format('opentype'); }

/* continuous canvas — same doctrine as home/about/pricing */
html, body, body.cs-page { background-color: #050505; }
.rg-footer, .rg-footer-main { background-color: #050505; }
.rg-footer-main { background-image: none; }
.rg-footer-bg-video { display: none; }

/* CASE STUDY — HPS aesthetic, minimalist */
.cs-page { color: #f3f3f3; background: #050505; font-family: 'Geist', 'Inter', system-ui, sans-serif; line-height: 1.55; }
.cs-page * { box-sizing: border-box; }
.cs-wrap { max-width: 880px; margin: 0 auto; padding: clamp(2rem, 5vw, 4rem) clamp(1.25rem, 4vw, 2rem); }
.cs-hero { padding-top: clamp(5rem, 10vh, 8rem); padding-bottom: clamp(2rem, 5vw, 3rem); }
.cs-hero__eyebrow { display: inline-flex; align-items: center; gap: .5rem; font-family: 'JetBrains Mono', monospace; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,.6); margin-bottom: 1.25rem; }
.cs-hero__eyebrow::before { content:""; display:block; width:.4rem; height:.4rem; border-radius:50%; background:#b06bff; box-shadow: 0 0 8px rgba(156,67,254,.7);}
.cs-hero__title { font-family: 'PP Neue Machina', 'Geist', sans-serif; font-weight: 600; font-size: clamp(2rem, 5.5vw, 3.4rem); line-height: 1.05; letter-spacing: -.02em; margin: 0 0 1rem; }
.cs-hero__title em { font-family: 'PP Editorial New', 'Iowan Old Style', serif; font-style: italic; font-weight: 400; background: linear-gradient(90deg, #c9aaff 0%, #ffcdfd 25%, #feffbc 50%, #b3e2ff 75%, #839aff 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cs-hero__tagline { font-family: 'PP Editorial New', serif; font-style: italic; color: rgba(255,255,255,.72); font-size: clamp(1.05rem, 1.6vw, 1.2rem); margin: 0 0 1.5rem; }
.cs-hero__desc { color: rgba(255,255,255,.82); font-size: clamp(1.05rem, 1.5vw, 1.18rem); line-height: 1.55; margin: 0 0 2.5rem; max-width: 60ch; }
.cs-hero__media { width: 100%; aspect-ratio: 16/9; border-radius: 16px; overflow: hidden; border: 1px solid rgba(255,255,255,.08); margin-bottom: 2.5rem; background: #0c0c0c; }
.cs-hero__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cs-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2.5rem; }
@media (max-width: 640px) { .cs-metrics { grid-template-columns: 1fr; } }
.cs-metric { padding: 1.25rem; border: 1px solid rgba(255,255,255,.08); border-radius: 12px; background: rgba(255,255,255,.02); }
.cs-metric__num { font-family: 'PP Neue Machina', 'Geist', sans-serif; font-size: clamp(1.8rem, 3.5vw, 2.4rem); font-weight: 700; background: linear-gradient(135deg, #c9aaff 0%, #839aff 100%); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; margin-bottom: .35rem; }
.cs-metric__label { font-family: 'JetBrains Mono', monospace; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,.55); }
.cs-section { padding-top: 3rem; padding-bottom: 3rem; border-top: 1px solid rgba(255,255,255,.06); }
.cs-section__title { font-family: 'PP Neue Machina', 'Geist', sans-serif; font-weight: 600; font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.01em; margin: 0 0 1.25rem; }
.cs-section p { color: rgba(255,255,255,.82); font-size: 1.06rem; line-height: 1.65; margin: 0 0 1.1rem; max-width: 64ch; }
.cs-section p strong { color: #fff; font-weight: 600; }
.cs-impl-list { padding: 0; margin: 1.25rem 0 0; list-style: none; display: grid; gap: .9rem; }
.cs-impl-list li { padding: .85rem 1rem .85rem 2.2rem; border: 1px solid rgba(255,255,255,.08); border-radius: 10px; background: rgba(255,255,255,.02); position: relative; line-height: 1.55; color: rgba(255,255,255,.85); font-size: .98rem; }
.cs-impl-list li::before { content:"+"; position:absolute; left:.9rem; top:.85rem; color: #b06bff; font-family: 'JetBrains Mono', monospace; font-weight: 600; }
.cs-impl-list li strong { color: #fff; font-weight: 600; }
.cs-quote { padding: 2rem clamp(1.25rem, 3vw, 2rem); border: 1px solid rgba(255,255,255,.1); border-radius: 16px; background: linear-gradient(180deg, rgba(156,67,254,.05), rgba(156,67,254,.02)); margin: 2rem 0 1rem; }
.cs-quote__text { font-family: 'PP Editorial New', 'Iowan Old Style', serif; font-style: italic; font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.45; color: #fff; margin: 0 0 1.25rem; }
.cs-quote__person { display: flex; align-items: center; gap: .85rem; }
.cs-quote__avatar { width: 44px; height: 44px; border-radius: 50%; overflow: hidden; background: #1a1a1a; flex-shrink: 0; }
.cs-quote__avatar img { width: 100%; height: 100%; object-fit: cover; display:block; }
.cs-quote__name { font-weight: 600; font-size: .96rem; color: #fff; margin: 0 0 .12rem; }
.cs-quote__role { font-family: 'JetBrains Mono', monospace; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.55); margin: 0; }
.cs-faqs { display: grid; gap: 1rem; margin-top: 1.5rem; }
.cs-faq { border: 1px solid rgba(255,255,255,.08); border-radius: 12px; background: rgba(255,255,255,.02); }
.cs-faq summary { cursor: pointer; padding: 1.1rem 1.25rem; font-weight: 600; color: #fff; font-size: 1.02rem; list-style: none; position: relative; padding-right: 3rem; }
.cs-faq summary::-webkit-details-marker { display: none; }
.cs-faq summary::after { content: "+"; position:absolute; right: 1.25rem; top: 1.1rem; color: #b06bff; font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 1.1rem; transition: transform .2s ease; }
.cs-faq[open] summary::after { transform: rotate(45deg); }
.cs-faq p { padding: 0 1.25rem 1.25rem; margin: 0; color: rgba(255,255,255,.78); line-height: 1.6; }
.cs-cta { margin-top: 4rem; padding: 2.5rem; text-align: center; border: 1px solid rgba(255,255,255,.1); border-radius: 16px; background: linear-gradient(180deg, rgba(156,67,254,.06), rgba(156,67,254,.02)); }
.cs-cta__title { font-family: 'PP Neue Machina', 'Geist', sans-serif; font-weight: 600; font-size: clamp(1.4rem, 3vw, 1.85rem); margin: 0 0 .75rem; letter-spacing: -.01em; }
.cs-cta__subtitle { color: rgba(255,255,255,.72); margin: 0 0 1.5rem; max-width: 50ch; margin-left: auto; margin-right: auto; }
.cs-cta__button { display: inline-flex; align-items: center; gap: .65rem; padding: .9rem 1.5rem; background: #fff; color: #050505; border-radius: 999px; font-weight: 600; text-decoration: none; transition: transform .15s ease; }
.cs-cta__button:hover { transform: translateY(-1px); }
.cs-vertical-tag { display: inline-flex; align-items: center; gap: .5rem; padding: .35rem .75rem; border: 1px solid rgba(255,255,255,.12); border-radius: 999px; font-family: 'JetBrains Mono', monospace; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.65); margin-bottom: 1rem; }

/* HUB cards */
.cs-hub-grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; margin-top: 2.5rem; }
@media (min-width: 768px) { .cs-hub-grid { grid-template-columns: repeat(2, 1fr); } }
.cs-hub-card { display: flex; flex-direction: column; padding: 0; border: 1px solid rgba(255,255,255,.08); border-radius: 16px; background: #0a0a0a; overflow: hidden; text-decoration: none; color: inherit; transition: border-color .2s ease, transform .2s ease; }
.cs-hub-card:hover { border-color: rgba(156,67,254,.35); transform: translateY(-2px); }
.cs-hub-card__cover { width: 100%; aspect-ratio: 4/3; overflow: hidden; background: #1a1a1a; }
.cs-hub-card__cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cs-hub-card__body { padding: 1.25rem 1.25rem 1.5rem; display: flex; flex-direction: column; gap: .75rem; }
.cs-hub-card__name { font-family: 'PP Neue Machina', 'Geist', sans-serif; font-weight: 600; font-size: 1.25rem; margin: 0; }
.cs-hub-card__tagline { font-family: 'PP Editorial New', serif; font-style: italic; color: rgba(255,255,255,.7); margin: 0; font-size: .96rem; }
.cs-hub-card__metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-top: .25rem; }
.cs-hub-card__metric { padding: .6rem .5rem; text-align: center; border: 1px solid rgba(255,255,255,.06); border-radius: 8px; background: rgba(255,255,255,.02); }
.cs-hub-card__metric-num { font-family: 'PP Neue Machina', 'Geist', sans-serif; font-weight: 700; font-size: 1rem; background: linear-gradient(135deg, #c9aaff 0%, #839aff 100%); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; }
.cs-hub-card__metric-label { font-family: 'JetBrains Mono', monospace; font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.5); margin-top: .25rem; }
.cs-hub-card__view { font-family: 'JetBrains Mono', monospace; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: #b06bff; margin-top: .35rem; display: inline-flex; align-items: center; gap: .35rem; }
.cs-hub-card__view::after { content: "→"; transition: transform .2s ease; }
.cs-hub-card:hover .cs-hub-card__view::after { transform: translateX(2px); }

/* film grain */
.cs-grain { position: fixed; inset: 0; z-index: 75; pointer-events: none; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 160px 160px; }
@media (prefers-reduced-motion: reduce) { .cs-grain { display: none; } }

/* tactile + AA focus */
.cs-cta__button:active { transform: translateY(0) scale(.97); }
.cs-cta__button:focus-visible, .cs-hub-card:focus-visible, .cs-faq summary:focus-visible { outline: 2px solid #b06bff; outline-offset: 3px; }