/* MICHEMICALDATALAB — GRATIS V2 (preview) — directorio + detalle de recursos gratuitos
   ------------------------------------------------------------------------
   Se carga JUNTO a /home-v2.css (tokens/header/#pf-grid/#pf-glow/#pf-fluid/.pf-techbar/
   .pf-wa-float — reutilizados sin cambios, igual que en apis.html/catalogo.html) +
   /site-scroll-indicator.css (mismo motor productivo de smooth scroll ya desplegado). Este
   archivo SOLO re-skinea las clases REALES que genera gratis.js (sin tocarlo): .gratis-grid,
   .gratis-card, .gratis-post-hero/-copy/-visual/-content, .gratis-modal*, .gratis-paper-*,
   .gratis-guide-*, .gratis-install-*, .gratis-figuras-*, .gratis-list, .gratis-scroll-hint,
   .btn(.secondary/.small/.block/.whatsapp). Ningún selector fue inventado — todos
   verificados leyendo gratis.js completo (595 líneas) y las reglas REALES vigentes en
   styles.css (líneas citadas en cada bloque). NO se carga /styles.css. */

/* ============ INTRO — mismo patrón "sección opaca sin z-index propio" que .apiv2-intro
   (apis-v2.css)/.pf-story (home-v2.css): evita el bug ya corregido de z-index atrapando
   grid/fluid. Texto EXACTO de gratis.html:36-38 (eyebrow/h1/lead reales, sin inventar). ============ */
.gv2-intro {
  position: relative;
  padding: 140px 56px 40px;
}
.gv2-intro::before {
  content: "";
  position: absolute; inset: 0; z-index: 0;
  background: #fbfaf4;
  pointer-events: none;
}
.gv2-intro-inner {
  position: relative; z-index: 4;
  max-width: 760px;
}
.gv2-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-label); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink); opacity: .78; margin: 0 0 14px;
}
.gv2-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: rgb(192, 254, 4); }
.gv2-intro h1 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -.025em;
  font-size: clamp(1.9rem, 3.8vw, 2.8rem); line-height: 1.05; color: var(--ink); margin: 0 0 16px;
}
.gv2-intro-lead {
  font-family: var(--font-mono); font-weight: 500; font-size: 15px; line-height: 1.6;
  color: var(--ink); max-width: 62ch; margin: 0;
}

/* ============ SECCIÓN DIRECTORIO — envuelve #gratisGrid (host real que gratis.js llena
   vía renderGratisGrid(), sin tocar). ============ */
.gv2-section {
  position: relative;
  padding: 8px 56px 64px;
}
.gv2-section-inner { position: relative; z-index: 4; max-width: 1320px; }
.gv2-section-head { max-width: 680px; margin-bottom: 24px; }
.gv2-section-head .mini-title {
  display: block; margin-bottom: 6px;
  font-family: var(--font-label); font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted);
}
.gv2-section-head h2 {
  margin: 0 0 8px; color: var(--ink);
  font-family: var(--font-display); font-weight: 700; font-size: clamp(24px,2.6vw,32px); line-height: 1.08;
}
.gv2-section-head p {
  margin: 0; color: var(--muted);
  font-family: var(--font-mono); font-size: 14px; line-height: 1.6; max-width: 60ch;
}

/* ============ .gratis-grid / .gratis-card — clases REALES emitidas por renderGratisGrid()
   (gratis.js:143-159). Estructura: repeat(3,1fr) → 2 → 1 col (breakpoints reales de
   styles.css:3003-3127: 920px/620px). minmax(0,1fr) en vez de 1fr (lección de Academia,
   PASO 29): ningún hijo de .gratis-card tiene width:min(Xpx,100%), pero se aplica el patrón
   seguro de todos modos, sin excepción. ============ */
.gratis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.gratis-card {
  background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  display: flex; flex-direction: column; min-height: 100%;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.gratis-card:hover { transform: translateY(-4px); box-shadow: 0 20px 48px rgba(10,14,20,.10); border-color: rgba(192,254,4,.5); }
.gratis-media {
  width: 100%; aspect-ratio: 4/3; min-width: 0; min-height: 0;
  background: #fbfaf4; display: grid; place-items: center; position: relative; overflow: hidden;
}
.gratis-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gratis-media span, .gratis-post-visual span {
  width: 84px; height: 84px; border-radius: 18px; display: grid; place-items: center;
  background: #fff; color: var(--ink); border: 1px solid var(--line);
  font-family: var(--font-display); font-size: 28px; font-weight: 700;
}
.gratis-card-body { padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; min-width: 0; }
.gratis-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.gratis-meta span {
  display: inline-flex; padding: 5px 10px; border-radius: 999px;
  background: rgba(192,254,4,.14); border: 1px solid rgba(192,254,4,.4); color: var(--ink);
  font-family: var(--font-label); font-size: 10px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
}
.gratis-card h3 { margin: 0; color: var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 20px; line-height: 1.1; }
.gratis-card h3 a { color: inherit; text-decoration: none; }
.gratis-card p { margin: 0 0 4px; color: var(--muted); font-family: var(--font-mono); font-size: 13px; line-height: 1.55; }
.gratis-card .btn { margin-top: auto; align-self: flex-start; }

/* ============ DETALLE — envuelve #gratisPostRoot (host real que renderGratisPost() llena).
   .gratis-post-hero: mismo grid real (styles.css:3067-3073), minmax(0,...) por seguridad. ============ */
.gv2-detail-section { position: relative; padding: 140px 56px 64px; }
.gv2-detail-inner { position: relative; z-index: 4; max-width: 1320px; margin-inline: auto; }
.gratis-post-card { position: relative; }
.gratis-post-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: 22px; align-items: stretch; margin-bottom: 22px;
}
.gratis-post-copy, .gratis-post-visual, .gratis-post-content .panel-card {
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
}
.gratis-post-copy { padding: clamp(22px, 4vw, 38px); min-width: 0; }
.gratis-post-copy .eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-family: var(--font-label); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); opacity: .78;
}
.gratis-post-copy .eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: rgb(192, 254, 4); }
.gratis-post-copy h1 {
  margin: 0 0 12px; color: var(--ink); font-family: var(--font-display); font-weight: 700;
  font-size: clamp(28px, 3.6vw, 46px); line-height: 1.02; letter-spacing: -.02em;
}
.gratis-inline-title-logo { border-radius: .12em; object-fit: contain; }
.gratis-post-copy .lead { margin: 0; color: var(--muted); font-family: var(--font-mono); font-size: 15px; line-height: 1.6; }
.gratis-post-copy .hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.gratis-post-visual {
  min-height: 320px; display: grid; place-items: center; overflow: hidden; min-width: 0;
  background: #fbfaf4;
}
.gratis-post-visual img { width: 100%; height: 100%; object-fit: cover; }
.gratis-post-content { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 18px; }
.gratis-post-content .panel-card { padding: 24px; min-width: 0; }
.gratis-post-content .panel-card h2 { margin: 0 0 12px; color: var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 20px; }
.gratis-download-box { grid-column: 1 / -1; }
.gratis-download-box p { margin: 0 0 16px; color: var(--muted); font-family: var(--font-mono); font-size: 13px; }
.gratis-whatsapp-box p { margin: 0 0 16px; color: var(--muted); font-family: var(--font-mono); font-size: 13px; line-height: 1.58; }
.gratis-install-box p { margin: 0 0 16px; color: var(--muted); font-family: var(--font-mono); font-size: 13px; line-height: 1.58; }
.gratis-install-cta { display: grid; gap: 10px; }
.gratis-install-tip { color: var(--muted); font-family: var(--font-mono); font-size: 12px; text-align: center; }

.gratis-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.gratis-list li {
  padding: 12px 14px 12px 40px; border-radius: 12px; background: #fbfaf4; position: relative;
  color: var(--ink); font-family: var(--font-mono); font-size: 13px; font-weight: 500;
}
.gratis-list li::before {
  content: "✓"; position: absolute; left: 12px; top: 10px; width: 20px; height: 20px;
  border-radius: 999px; background: rgb(192,254,4); color: rgb(0,0,0);
  display: grid; place-items: center; font-size: 11px; font-weight: 700;
}

/* ============ scroll hint decorativo — mismo real de styles.css:3306-3342 (flechas que
   rebotan), reskineado a tokens V2. ============ */
.gratis-scroll-hint { grid-column: 1 / -1; display: grid; place-items: center; gap: 6px; padding: 6px 0 2px; }
.gratis-scroll-hint span { font-family: var(--font-label); font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink); }
.gratis-scroll-arrows { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.gratis-scroll-arrows i {
  width: 14px; height: 14px; display: block; border-right: 3px solid rgb(192,254,4); border-bottom: 3px solid rgb(192,254,4);
  transform: rotate(45deg); border-radius: 2px; opacity: .5; animation: gv2ArrowBounce 1.35s infinite;
}
.gratis-scroll-arrows i:nth-child(2) { animation-delay: .18s; }
.gratis-scroll-arrows i:nth-child(3) { animation-delay: .36s; }
@keyframes gv2ArrowBounce {
  0% { transform: rotate(45deg) translate(-2px,-2px); opacity: .2; }
  50% { transform: rotate(45deg) translate(0,0); opacity: 1; }
  100% { transform: rotate(45deg) translate(2px,2px); opacity: .2; }
}

/* ============ CARRUSEL FIGURAS — #gratisFigurasSection/#gratisFigurasTrack, poblado por
   renderGratisFiguras() con datos REALES de GET /api/figuras (gratis.js:254-274). Marquee
   real de styles.css:3260-3300 (animación/velocidad idénticas, solo reskin visual). ============ */
.gratis-figuras-section { margin: 6px 0 20px; padding: 6px 0 18px; border-bottom: 1px solid var(--line); overflow: hidden; position: relative; }
.gratis-figuras-section.hidden { display: none; }
.gratis-figuras-track { display: flex; gap: 14px; width: max-content; padding: 6px 0 10px; animation: gv2FigurasMove 38s linear infinite; }
.gratis-figuras-section:hover .gratis-figuras-track { animation-play-state: paused; }
.gratis-figura-card {
  flex: 0 0 auto; width: clamp(108px, 11vw, 160px); aspect-ratio: 3/4; border-radius: 14px;
  background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 26px rgba(10,14,20,.08); padding: 6px; overflow: hidden;
}
.gratis-figura-card img { width: 100%; height: 100%; object-fit: contain; border-radius: 10px; background: #fff; }
@keyframes gv2FigurasMove { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============ MODALES — 3 reales: #gratisFollowModal (descarga+Facebook+timer),
   #gratisInfoModal (papel/guía), #gratisInstallModal (tutorial). Geometría real de
   styles.css:3131-3167, reskineada. ============ */
body.gratis-modal-open { overflow: hidden; }
.gratis-modal { position: fixed; inset: 0; z-index: 9999; display: grid; place-items: center; padding: 20px; }
.gratis-modal.hidden { display: none !important; }
.gratis-modal-backdrop { position: absolute; inset: 0; background: rgba(10,14,20,.6); backdrop-filter: blur(8px); }
.gratis-modal-card {
  position: relative; width: min(520px, 100%); background: #fff; border: 1px solid var(--line);
  border-radius: 18px; box-shadow: 0 30px 80px rgba(10,14,20,.18); padding: clamp(22px,4vw,32px);
  display: grid; gap: 14px; text-align: center; max-height: calc(100vh - 44px); overflow-y: auto;
  overscroll-behavior: contain; scrollbar-width: none;
}
.gratis-modal-card::-webkit-scrollbar { width: 0; height: 0; display: none; }
.gratis-modal-close {
  position: absolute; top: 12px; right: 12px; width: 38px; height: 38px; border: 1px solid var(--line);
  border-radius: 999px; background: #fff; color: var(--ink); font-size: 22px; font-weight: 700; line-height: 1; cursor: pointer;
}
.gratis-modal-kicker {
  justify-self: center; display: inline-flex; padding: 6px 12px; border-radius: 999px;
  background: rgba(192,254,4,.16); border: 1px solid rgba(192,254,4,.4); color: var(--ink);
  font-family: var(--font-label); font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
}
.gratis-modal-card h2 {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(24px,4vw,32px); line-height: 1.05; letter-spacing: -.02em; color: var(--ink); margin: 0;
}
.gratis-modal-card p { color: var(--muted); font-family: var(--font-mono); font-size: 14px; line-height: 1.55; margin: 0; }
.gratis-modal-card small { color: var(--muted); font-family: var(--font-mono); font-size: 11px; line-height: 1.4; }
.gratis-facebook-btn { justify-self: center; background: linear-gradient(135deg, #1877f2, #1d4ed8) !important; color: #fff !important; }
#gratisFinalDownloadBtn:disabled { opacity: .48; cursor: not-allowed; transform: none; box-shadow: none; }
.gratis-countdown-box {
  width: 100%; border-radius: 14px; padding: 12px 14px; background: rgba(192,254,4,.12);
  border: 1px solid rgba(192,254,4,.4); display: grid; gap: 4px; text-align: center;
}
.gratis-countdown-box strong { color: var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 16px; }
.gratis-countdown-box span { color: var(--muted); font-family: var(--font-mono); font-size: 12px; }

/* ============ MODAL PAPEL — clases REALES de gratis.js:349-367 (gratis-paper-grid/-card). ============ */
.gratis-modal-card:has(.gratis-paper-grid) { width: min(760px,100%); text-align: left; }
.gratis-modal-card:has(.gratis-paper-grid) .gratis-modal-kicker,
.gratis-modal-card:has(.gratis-paper-grid) h2 { justify-self: center; text-align: center; }
.gratis-paper-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 16px; margin-top: 6px; }
.gratis-paper-card {
  border: 1px solid var(--line); border-radius: 16px; padding: 16px; background: #fbfaf4; min-width: 0;
}
.gratis-paper-card img { width: 100%; max-height: 160px; object-fit: contain; border-radius: 12px; background: #fff; margin-bottom: 12px; }
.gratis-paper-card h3 { margin: 0 0 6px; font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--ink); }
.gratis-paper-card p { margin: 0 0 6px; color: var(--muted); font-family: var(--font-mono); font-size: 12.5px; line-height: 1.5; }
@media (max-width: 640px) { .gratis-paper-grid { grid-template-columns: minmax(0,1fr); } }

/* ============ MODAL GUÍA — clases REALES de gratis.js:369-425 (gratis-guide-full/-block/
   -number/-checks). ============ */
.gratis-modal-card:has(.gratis-guide-full) { width: min(660px,100%); text-align: left; }
.gratis-modal-card:has(.gratis-guide-full) .gratis-modal-kicker,
.gratis-modal-card:has(.gratis-guide-full) h2 { justify-self: center; text-align: center; }
.gratis-guide-full { display: grid; gap: 14px; margin-top: 4px; }
.gratis-guide-block {
  display: grid; grid-template-columns: 40px minmax(0,1fr); gap: 12px; align-items: start;
  padding: 14px; border-radius: 14px; background: #fbfaf4; border: 1px solid var(--line);
}
.gratis-guide-number {
  width: 40px; height: 40px; border-radius: 999px; display: grid; place-items: center;
  background: rgb(192,254,4); color: rgb(0,0,0); font-family: var(--font-display); font-weight: 700; font-size: 15px;
}
.gratis-guide-block h3 { margin: 0 0 6px; font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--ink); }
.gratis-guide-block p, .gratis-guide-block ul { margin: 0 0 6px; color: var(--muted); font-family: var(--font-mono); font-size: 12.5px; line-height: 1.5; }
.gratis-guide-block ul { padding-left: 18px; }
.gratis-guide-block li { margin-bottom: 3px; }
.gratis-guide-checks { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.gratis-guide-checks span {
  display: inline-flex; padding: 4px 9px; border-radius: 999px; background: rgba(192,254,4,.14);
  border: 1px solid rgba(192,254,4,.4); color: var(--ink); font-family: var(--font-label); font-size: 10px; font-weight: 700;
}
@media (max-width: 640px) { .gratis-guide-block { grid-template-columns: minmax(0,1fr); } .gratis-guide-number { width: 32px; height: 32px; font-size: 13px; } }

/* ============ MODAL TUTORIAL INSTALACIÓN — clases REALES de gratis.js:504-559
   (gratis-install-steps/-step/-step-copy/-step-number/-shot/-arrow). ============ */
.gratis-install-modal-card { width: min(880px,100%); text-align: left; }
.gratis-install-modal-card .gratis-modal-kicker, .gratis-install-modal-card h2 { justify-self: center; text-align: center; }
.gratis-install-steps { display: grid; gap: 16px; margin-top: 6px; }
.gratis-install-step {
  display: grid; grid-template-columns: minmax(200px,.85fr) minmax(240px,1.15fr); gap: 16px; align-items: start;
  padding: 16px; border-radius: 16px; border: 1px solid var(--line); background: #fbfaf4;
}
.gratis-install-step-copy { display: flex; gap: 12px; align-items: flex-start; min-width: 0; }
.gratis-install-step-number {
  flex: 0 0 38px; width: 38px; height: 38px; border-radius: 999px; display: grid; place-items: center;
  background: rgb(192,254,4); color: rgb(0,0,0); font-family: var(--font-display); font-weight: 700; font-size: 15px;
}
.gratis-install-step h3 { margin: 0 0 6px; font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--ink); }
.gratis-install-step p { margin: 0; color: var(--muted); font-family: var(--font-mono); font-size: 12.5px; line-height: 1.5; }
.gratis-install-shot {
  margin: 0; display: grid; gap: 8px; align-content: start; padding: 10px; border-radius: 14px; overflow: hidden;
  border: 1px solid var(--line); background: #fff; min-width: 0;
}
.gratis-install-shot img { display: block; width: 100%; height: auto; border-radius: 10px; }
.gratis-install-arrow {
  display: inline-flex; align-items: center; justify-self: start; max-width: 100%; padding: 7px 12px;
  border-radius: 999px; background: rgb(192,254,4); color: rgb(0,0,0); font-family: var(--font-label);
  font-weight: 700; font-size: 11px; letter-spacing: .03em; text-transform: uppercase; white-space: normal;
}
@media (max-width: 860px) { .gratis-install-step { grid-template-columns: minmax(0,1fr); } .gratis-install-step-copy { align-items: center; } }

/* ============ BOTONES — lima V2 aprobado (idéntico a apis-v2.css:150-167), + variante
   whatsapp real (styles.css:158, sin cambios de color/marca). ============ */
.btn {
  font-family: var(--font-label); font-size: 12px; letter-spacing: .06em; text-transform: uppercase;
  min-height: 44px; padding: 0 18px; border-radius: 6px; border: 1px solid transparent;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none; background: none;
  transition: background .2s ease, transform .15s ease, border-color .15s ease, color .15s ease;
}
.btn:not(.secondary):not(.whatsapp) { background: rgb(192, 254, 4); color: rgb(0, 0, 0); }
.btn:not(.secondary):not(.whatsapp):hover { background: rgb(170, 238, 0); transform: translateY(-1px); }
.btn.secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.secondary:hover { border-color: rgba(10,14,20,.28); transform: translateY(-1px); }
.btn.whatsapp { background: linear-gradient(135deg, #20c76b, #36d399); color: #062915; box-shadow: 0 18px 34px rgba(32,199,107,.24); }
.btn.whatsapp:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid rgb(192, 254, 4); outline-offset: 2px; }
.btn.block { width: 100%; }
.btn.small { min-height: 36px; padding: 0 14px; font-size: 11px; }

/* ============ CIERRE — mismo patrón real de catalogo.html/apis.html (.cv2-close/.apiv2-close). ============ */
.gv2-close { position: relative; padding: 48px 56px 96px; text-align: center; }
.gv2-close-mark { font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: -.01em; color: var(--ink); }
.gv2-close-line { font-family: var(--font-label); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }

/* ============ MODO DIRECTORIO/DETALLE — un solo Preview soporta ?id= (PASO 6): ver
   comentario completo en gratis-v2-preview.html (script inline en <head>). Aquí solo el
   toggle visual: html.gv2-mode-detail oculta el directorio y muestra el detalle, y viceversa
   (por defecto, sin ?id=, se muestra el directorio). ============ */
#gv2-directory-section { display: block; }
#gv2-detail-section { display: none; }
html.gv2-mode-detail #gv2-directory-section { display: none; }
html.gv2-mode-detail #gv2-detail-section { display: block; }

/* ============ SEGURIDAD 320px — mismo fix ya aprobado (apis-v2.css:288-290). ============ */
@media (max-width: 400px) {
  .pf-brandname { display: none; }
}

/* ============ RESPONSIVE — breakpoints REALES de .gratis-grid/.gratis-post-hero/-content
   (styles.css:3118-3127), minmax(0,1fr) en vez de 1fr por seguridad (PASO 29). ============ */
@media (max-width: 1080px) {
  .gv2-intro { padding: 120px 24px 32px; }
  .gv2-section { padding: 8px 24px 56px; }
  .gv2-detail-section { padding: 120px 24px 56px; }
}
@media (max-width: 920px) {
  .gratis-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gratis-post-hero { grid-template-columns: minmax(0, 1fr); }
  .gratis-post-content { grid-template-columns: minmax(0, 1fr); }
  .gratis-post-visual { min-height: 260px; }
}
@media (max-width: 720px) {
  .gratis-figuras-track { animation-duration: 28s; }
  .gratis-figura-card { width: 100px; }
}
@media (max-width: 620px) {
  .gratis-grid { grid-template-columns: minmax(0, 1fr); }
  .gratis-post-copy .hero-actions .btn,
  .gratis-download-box .hero-actions .btn { width: 100%; }
  .gv2-close { padding: 40px 24px 80px; }
}