/* ================================================================
   Formosa Educa IA · Sistema visual de la portada pública
   Las variables permiten cambiar la identidad sin recorrer el archivo.
   ================================================================ 
*/
:root {
  --fe-primary: #175cd3;
  --fe-primary-dark: #0b3b88;
  --fe-accent: #0f9f8f;
  --fe-ink: #172033;
  --fe-muted: #5f6c7b;
  --fe-surface: #ffffff;
  --fe-soft: #f2f7fc;
  --fe-border: #dce6f1;
  --fe-radius: 1.25rem;
  --fe-shadow: 0 16px 40px rgba(23, 52, 88, 0.09);
  --fe-header-height: 76px;
}

html { scroll-behavior: smooth; }
.fe-page { color: var(--fe-ink); background: var(--fe-surface); font-family: "Roboto", Arial, sans-serif; }
.fe-page section { scroll-margin-top: calc(var(--fe-header-height) + 1rem); }
.fe-page p { line-height: 1.7; }
.fe-page a, .fe-page button { transition: color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.fe-page a:focus-visible, .fe-page button:focus-visible { outline: 3px solid rgba(15, 159, 143, .45); outline-offset: 3px; }

/* Accesibilidad: el enlace aparece al recibir foco con teclado. */
.fe-skip-link { position: fixed; top: .5rem; left: .5rem; z-index: 1100; padding: .75rem 1rem; color: #fff; background: var(--fe-primary-dark); border-radius: .5rem; transform: translateY(-150%); }
.fe-skip-link:focus { color: #fff; transform: translateY(0); }

/* Cabecera compacta y marca provisional reemplazable. */
.fe-header { min-height: var(--fe-header-height); background: rgba(255,255,255,.96); border-bottom: 1px solid var(--fe-border); backdrop-filter: blur(12px); }
.fe-header .navbar { min-height: var(--fe-header-height); }
.fe-brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--fe-ink) !important; font-size: 1.08rem; font-weight: 700; text-decoration: none; }
.fe-logo { display: inline-grid; place-items: center; width: 44px; height: 44px; color: #fff; background: linear-gradient(145deg, var(--fe-primary), var(--fe-accent)); border-radius: 13px; font-weight: 800; letter-spacing: -.04em; box-shadow: 0 8px 20px rgba(23,92,211,.2); }
.fe-logo img { display: block; width: 100%; height: 100%; object-fit: contain; }
.fe-header .nav-link { color: var(--fe-ink); font-weight: 500; border-radius: .65rem; padding: .6rem .85rem !important; }
.fe-header .nav-link:hover { color: var(--fe-primary); background: var(--fe-soft); }

/* Presentación principal. */
.fe-hero { position: relative; overflow: hidden; padding: clamp(4.5rem, 9vw, 8rem) 0; background: radial-gradient(circle at 90% 10%, rgba(15,159,143,.16), transparent 30%), linear-gradient(135deg, #f7fbff 0%, #eef6ff 100%); }
.fe-hero h1 { max-width: 820px; margin: .85rem 0 1.25rem; font-size: clamp(2.5rem, 5vw, 4.7rem); line-height: 1.06; letter-spacing: -.045em; font-weight: 800; }
.fe-hero .lead { max-width: 760px; color: var(--fe-muted); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.fe-eyebrow { display: inline-block; color: var(--fe-accent); font-size: .82rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.fe-page .btn-primary { background: var(--fe-primary); border-color: var(--fe-primary); }
.fe-page .btn-primary:hover { background: var(--fe-primary-dark); border-color: var(--fe-primary-dark); transform: translateY(-2px); }
.fe-page .btn-outline-primary { color: var(--fe-primary); border-color: var(--fe-primary); }
.fe-page .btn-outline-primary:hover { color: #fff; background: var(--fe-primary); }
.fe-hero-graphic { position: relative; display: grid; place-items: center; width: min(100%, 410px); aspect-ratio: 1; margin-inline: auto; color: #fff; background: linear-gradient(145deg, var(--fe-primary), var(--fe-primary-dark)); border: 16px solid rgba(255,255,255,.72); border-radius: 38% 62% 58% 42% / 44% 38% 62% 56%; box-shadow: var(--fe-shadow); }
.fe-hero-graphic > .bi-book-half { font-size: clamp(5rem, 12vw, 8rem); }
.fe-spark { position: absolute; top: 18%; right: 15%; display: grid; place-items: center; width: 64px; height: 64px; color: var(--fe-primary-dark); background: #baf3df; border-radius: 50%; font-size: 1.8rem; }
.fe-orbit { position: absolute; border: 2px dashed rgba(15,159,143,.45); border-radius: 50%; }
.fe-orbit-one { inset: -24px; }.fe-orbit-two { inset: 24px; border-color: rgba(255,255,255,.35); }

/* Secciones, filtros y tarjetas reutilizables. */
.fe-section { padding: clamp(4rem, 7vw, 7rem) 0; }
.fe-section-soft { background: var(--fe-soft); }
.fe-section-heading { max-width: 730px; margin-bottom: 2rem; }
.fe-section-heading h2 { margin: .4rem 0 .6rem; font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; letter-spacing: -.03em; }
.fe-section-heading > p { color: var(--fe-muted); font-size: 1.08rem; }
.fe-demo-note { display: flex; align-items: flex-start; gap: .55rem; padding: .8rem 1rem; color: #654f12 !important; background: #fff8d9; border: 1px solid #f4df83; border-radius: .75rem; font-size: .9rem !important; }
.fe-filters { display: flex; flex-wrap: wrap; gap: .65rem; margin-bottom: 2rem; }
.fe-filter { color: var(--fe-muted); background: #fff; border: 1px solid var(--fe-border); border-radius: 999px; font-weight: 600; }
.fe-filter:hover, .fe-filter.active { color: #fff; background: var(--fe-primary); border-color: var(--fe-primary); }
.fe-card { overflow: hidden; background: #fff; border: 1px solid var(--fe-border); border-radius: var(--fe-radius); box-shadow: 0 8px 28px rgba(23,52,88,.06); }
.fe-card:hover { transform: translateY(-5px); box-shadow: var(--fe-shadow); }
.fe-card-visual { display: grid; place-items: center; min-height: 155px; color: var(--fe-primary); background: linear-gradient(135deg, #dfeeff, #ddf8f1); font-size: 3.25rem; }
.fe-badge, .fe-level { display: inline-flex; align-items: center; width: fit-content; padding: .35rem .65rem; color: var(--fe-primary-dark); background: #e8f1ff; border-radius: 999px; font-size: .78rem; font-weight: 700; }
.fe-level { color: #08695f; background: #dcf7f1; }
.fe-idea-card { position: relative; overflow: visible; padding-top: 4.7rem !important; }
.fe-idea-icon { position: absolute; top: -1.25rem; left: 1.5rem; display: grid; place-items: center; width: 58px; height: 58px; color: #fff; background: linear-gradient(145deg, var(--fe-accent), #08736a); border: 5px solid var(--fe-soft); border-radius: 18px; font-size: 1.45rem; }
.fe-empty { padding: 2rem; text-align: center; color: var(--fe-muted); background: var(--fe-soft); border-radius: var(--fe-radius); }

/* Modales: contenido pedagógico legible y bien jerarquizado. */
.fe-page .modal-content { border: 0; border-radius: var(--fe-radius); box-shadow: var(--fe-shadow); }
.fe-page .modal-header { align-items: flex-start; padding: 1.5rem; border-bottom-color: var(--fe-border); }
.fe-page .modal-body { padding: 1.5rem; }
.fe-loading { color: var(--fe-muted); }
.fe-article-content { color: var(--fe-ink); line-height: 1.75; }
.fe-article-content h2, .fe-article-content h3, .fe-article-content h4 { margin-top: 1.4em; color: var(--fe-primary-dark); }
.fe-article-content a { overflow-wrap: anywhere; }
.fe-proposal-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.fe-proposal-grid section { padding: 1rem; background: var(--fe-soft); border-radius: .85rem; }
.fe-proposal-grid h3 { color: var(--fe-primary-dark); font-size: .95rem; font-weight: 800; }
.fe-proposal-grid p, .fe-proposal-grid li { margin-bottom: .3rem; color: var(--fe-muted); line-height: 1.6; }
.fe-proposal-wide { grid-column: 1 / -1; }

/* Pie de página. */
.fe-footer { padding: 4rem 0 1.5rem; color: #cdd9e8; background: #0e2037; }
.fe-brand-footer { margin-bottom: 1rem; color: #fff !important; }
.fe-footer h2 { color: #fff; text-transform: uppercase; letter-spacing: .05em; }
.fe-footer a, .fe-footer span { display: block; margin-bottom: .55rem; color: #cdd9e8; text-decoration: none; }
.fe-footer a:hover { color: #fff; text-decoration: underline; }
.fe-footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.13); font-size: .88rem; }

/* Vista completa de noticias. */
.fe-reader-page { min-height: 100vh; display: flex; flex-direction: column; background: var(--fe-soft); }
.fe-reader-main { flex: 1; padding: clamp(3rem, 7vw, 6rem) 0; }
.fe-reader-article { max-width: 860px; margin: 0 auto; padding: clamp(1.5rem, 5vw, 4rem); background: #fff; border: 1px solid var(--fe-border); border-radius: var(--fe-radius); box-shadow: var(--fe-shadow); }
.fe-reader-heading { padding-bottom: 2rem; margin-bottom: 2rem; border-bottom: 1px solid var(--fe-border); }
.fe-reader-heading h1 { margin: .75rem 0 1rem; font-size: clamp(2rem, 5vw, 3.7rem); line-height: 1.1; letter-spacing: -.04em; font-weight: 800; }
.fe-reader-date { margin: 1rem 0 0; color: var(--fe-muted); font-size: .9rem; }
.fe-reader-lead { margin: 0; color: var(--fe-muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.fe-reader-content { font-size: 1.05rem; }
.fe-reader-content img { max-width: 100%; height: auto; }
.fe-reader-actions { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--fe-border); }
.fe-reader-status:not(:empty) { max-width: 760px; margin: 2rem auto; padding: 2rem; text-align: center; color: var(--fe-muted); background: #fff; border: 1px solid var(--fe-border); border-radius: var(--fe-radius); }
.fe-reader-footer { padding-top: 1rem; }
.fe-reader-footer .fe-footer-bottom { margin-top: 0; }

@media (max-width: 991.98px) {
  .fe-header .navbar-collapse { padding: .75rem 0 1rem; }
  .fe-hero { text-align: center; }
  .fe-hero .lead { margin-inline: auto; }
  .fe-hero .d-flex { justify-content: center; }
  .fe-hero-graphic { max-width: 330px; }
}
@media (max-width: 767.98px) {
  .fe-proposal-grid { grid-template-columns: 1fr; }
  .fe-proposal-wide { grid-column: auto; }
  .fe-footer-bottom { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fe-page *, .fe-page *::before, .fe-page *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

.fe-reader-image { display: block; width: 100%; max-height: 520px; margin: 0 0 2rem; border-radius: 12px; object-fit: cover; }