/* Misma paleta que las presentaciones de charlas/ */
:root {
  --bg: #07121f;
  --surface: #0d2033;
  --line: #29465d;
  --ink: #eef7fb;
  --muted: #a6bdcb;
  --puras: #f5c96f;
  --biomat: #53d5cd;
  --violet: #bda0ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1000px 620px at 0 -15%, #16495b8a, transparent 58%),
    radial-gradient(1000px 640px at 100% 110%, #54266566, transparent 59%),
    var(--bg);
  background-attachment: fixed;
  font: 16px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--biomat); }

.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 14px max(16px, calc((100% - 1100px) / 2));
  background: #07121fd9; backdrop-filter: blur(10px);
  border-bottom: 1px solid #ffffff14;
}
.brand { color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: .2em; }
.brand span { color: var(--puras); font-family: Georgia, serif; }
.nav nav { display: flex; gap: 18px; flex-wrap: wrap; }
.nav nav a { color: var(--muted); text-decoration: none; font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.nav nav a:hover { color: var(--ink); }

main { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
section { padding: 72px 0 24px; scroll-margin-top: 60px; }
.center { text-align: center; }
.muted { color: var(--muted); }

.hero { padding-top: 96px; }
.eyebrow { margin: 0 0 10px; color: var(--biomat); font-size: .74rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
h1 { margin: 0; font: 500 clamp(2.6rem, 7vw, 5.6rem)/.95 Georgia, "Times New Roman", serif; letter-spacing: -.04em; }
h1 em { color: var(--puras); font-weight: 400; }
.spaced { margin: 40px 0 16px; color: var(--muted); letter-spacing: .3em; font-size: .95rem; text-transform: lowercase; }
.lead { max-width: 720px; color: #bfd0db; font: 1.15rem/1.65 Georgia, serif; }
.lead.center { margin: 0 auto; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 32px 0 16px; }
.facts div { padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: #0d2033aa; }
.facts span { display: block; color: var(--muted); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.facts strong { font-size: 1.05rem; }
.invite { color: var(--puras); font-weight: 700; }

.lineas { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.linea { padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: #091827dc; }
.linea h2 { margin: 4px 0 12px; font: 500 2rem/1.1 Georgia, serif; }
.linea.puras { border-top: 3px solid var(--puras); }
.linea.biomat { border-top: 3px solid var(--biomat); }
.linea ul { padding-left: 20px; color: var(--muted); }
.tag { margin: 0; color: var(--muted); font-size: .7rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }

.curso { display: grid; grid-template-columns: minmax(0, 380px) 1fr; gap: 40px; align-items: center; }
.curso figure { margin: 0; }
.curso img { display: block; width: 100%; height: auto; border-radius: 16px; border: 1px solid var(--line); box-shadow: 0 30px 90px #0008; }
.curso h2 { margin: 6px 0 8px; font: 500 clamp(2rem, 4vw, 3rem)/1.05 Georgia, serif; color: var(--puras); }
.curso .lead { margin: 0 0 16px; }
.boton {
  display: inline-block; margin-top: 8px; padding: 12px 22px; border-radius: 999px;
  background: var(--biomat); color: var(--bg); font-weight: 800; text-decoration: none;
}
.boton:hover { filter: brightness(1.1); }

.coordinadores { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 20px; }
.coordinadores div { display: flex; flex-direction: column; gap: 4px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: #0d2033aa; }
.coordinadores a { font-size: .9rem; overflow-wrap: anywhere; }

.section-title { text-align: center; font: 500 2.2rem/1.1 Georgia, serif; margin: 0 0 8px; }
.filters { display: flex; justify-content: center; gap: 8px; margin: 20px 0; }
.filters button {
  padding: 6px 16px; border: 1px solid var(--line); border-radius: 999px;
  background: transparent; color: var(--muted); font: inherit; font-size: .85rem; cursor: pointer;
}
.filters button.on { background: var(--surface); color: var(--ink); border-color: var(--muted); }

.sesiones { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.sesion { display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: #0d2033aa; }
.sesion[hidden] { display: none; }
.num { font: 1.6rem/1 Georgia, serif; color: var(--violet); }
.sesion h3 { margin: 0; font-size: 1.05rem; }
.sesion h3 a { color: var(--ink); }
.fecha { margin: 2px 0 6px; color: var(--muted); font-size: .9rem; }
.meta { margin: 0; color: var(--muted); font-size: .85rem; }
.pill { display: inline-block; margin-right: 6px; padding: 1px 8px; border-radius: 999px; font-size: .68rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; background: #ffffff12; color: var(--ink); }
.pill.linea-puras { color: var(--puras); }
.pill.linea-biomat { color: var(--biomat); }
.pill.linea-ambas { color: var(--violet); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 18px; }
.card { display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: #091827dc; }
.card.linea-puras { border-left: 3px solid var(--puras); }
.card.linea-biomat { border-left: 3px solid var(--biomat); }
.card.linea-ambas { border-left: 3px solid var(--violet); }
#lista-investigacion { grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr)); }
.card h3 { margin: 6px 0 10px; font: 500 1.4rem/1.2 Georgia, serif; }
.card p { color: var(--muted); }
.cta { margin-top: auto; font-weight: 800; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; text-decoration: none; }

footer { margin-top: 80px; padding: 32px 16px; text-align: center; color: var(--muted); font-size: .85rem; border-top: 1px solid #ffffff14; }

@media (max-width: 600px) {
  .nav nav { gap: 12px; }
  section { padding-top: 48px; }
  .curso { grid-template-columns: 1fr; gap: 24px; }
}