/* ============================================================
   Conjunto Instrumental Ex-Alumn@s LMS — estilos del sitio
   Los tokens de :root reflejan la fuente de verdad del workspace:
   recursos/identidad-visual/tokens-conjunto-lms.css
   No hardcodear colores fuera de este bloque.
   ============================================================ */
:root {
  --carbon:       #2d2d29;
  --carbon-deep:  #1c1c19;
  --carbon-soft:  #3a3a35;
  --rojo:         #d1463f;
  --rojo-oscuro:  #b93a34;
  --rojo-claro:   #e86f63;
  --carbon-noche: #141412;
  --hueso:        #f2f0eb;
  --gris-suave:   #b9b5ac;
  --line:         rgba(242, 240, 235, .14);
  --white:        #ffffff;

  --maxw: 1120px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, .5);

  --font-display: "Poppins", "Century Gothic", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, p, ul, figure, figcaption { margin: 0; }
ul { padding: 0; list-style: none; }
img, iframe { max-width: 100%; }
img { height: auto; display: block; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  color: var(--hueso);
  background: var(--carbon);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--rojo-claro); }
a:hover { color: var(--white); }

.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.container--narrow { width: min(100% - 2.5rem, 760px); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--rojo); color: var(--white); padding: .75rem 1.25rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

:focus-visible { outline: 3px solid var(--rojo-claro); outline-offset: 3px; }

/* ---------- Tipografía común ---------- */
.eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
  font-weight: 600;
  color: var(--rojo-claro);
  margin-bottom: .6rem;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.8rem, 1.2rem + 2.2vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.01em;
}
.section__lead { color: var(--gris-suave); margin-top: .75rem; max-width: 62ch; }

.section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.section--alt { background: var(--carbon-deep); }

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .98rem;
  padding: .85rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.btn--primary { background: var(--rojo); color: var(--white); }
.btn--primary:hover { background: var(--rojo-oscuro); color: var(--white); }
.btn--ghost { border: 1px solid var(--line); color: var(--hueso); }
.btn--ghost:hover { border-color: var(--hueso); background: rgba(242, 240, 235, .06); color: var(--hueso); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(28, 28, 25, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .7rem 0; }
.nav__brand img { width: 168px; height: auto; }
.nav__menu { display: flex; gap: 1.4rem; }
.nav__menu a {
  color: var(--hueso); text-decoration: none; font-size: .95rem; font-weight: 500;
  padding: .25rem 0; border-bottom: 2px solid transparent;
}
.nav__menu a:hover { color: var(--white); border-bottom-color: var(--rojo); }

.nav__toggle {
  display: none;
  background: none; border: 0; cursor: pointer;
  width: 42px; height: 38px; padding: 8px;
}
.nav__toggle span { display: block; height: 2px; background: var(--hueso); margin: 5px 0; transition: .2s; }

@media (max-width: 860px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; gap: 0;
    background: var(--carbon-deep);
    border-bottom: 1px solid var(--line);
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .nav__menu a { padding: .9rem 1.25rem; border-bottom: 1px solid var(--line); }
  .nav__menu a:hover { border-bottom-color: var(--line); background: rgba(242, 240, 235, .06); }
  .nav.is-open .nav__menu { max-height: 380px; }
}

/* ---------- Hero ---------- */
.hero { position: relative; isolation: isolate; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(to bottom, rgba(28,28,25,.72), rgba(28,28,25,.94)),
    url("../img/hero-conjunto.jpg") center / cover no-repeat;
}
.hero__inner { padding: clamp(4rem, 12vw, 8rem) 0 clamp(3rem, 8vw, 5rem); }
.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.3rem, 1.2rem + 4.4vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  text-transform: uppercase;
}
.hero__title span { color: var(--rojo-claro); }
.hero__lead { margin-top: 1.25rem; max-width: 58ch; font-size: clamp(1rem, .95rem + .3vw, 1.15rem); color: var(--hueso); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero__note { margin-top: 1.25rem; color: var(--gris-suave); font-size: .95rem; }

/* ---------- Agenda ---------- */
.agenda { display: grid; gap: 1rem; margin-top: 2.5rem; }
@media (min-width: 720px) { .agenda { grid-template-columns: repeat(2, 1fr); } }

.agenda__item {
  display: flex; gap: 1.25rem; align-items: flex-start;
  background: var(--carbon-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
}
.agenda__date {
  flex: 0 0 auto;
  display: grid; place-items: center;
  width: 64px; padding: .5rem 0;
  background: var(--rojo);
  border-radius: 10px;
  color: var(--white);
  line-height: 1;
}
.agenda__day { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; }
.agenda__month { text-transform: uppercase; letter-spacing: .1em; font-size: .72rem; font-weight: 600; margin-top: .25rem; }
.agenda__place { font-family: var(--font-display); font-weight: 600; font-size: 1.12rem; line-height: 1.3; }
.agenda__when { color: var(--hueso); margin-top: .3rem; font-size: .96rem; }
.agenda__pending { color: var(--gris-suave); font-style: italic; }
.agenda__tag {
  display: inline-block; margin-top: .6rem;
  font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  color: var(--rojo-claro);
}
.agenda__foot { margin-top: 1.75rem; color: var(--gris-suave); font-size: .95rem; }

/* ---------- Split (texto + imagen) ---------- */
.split { display: grid; gap: 2rem; margin-top: 2.25rem; align-items: start; }
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; gap: 3rem; }
}
.split__text p + p { margin-top: 1rem; }
.split__media { display: grid; gap: 1.25rem; }

.figure { background: var(--carbon-soft); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.figure img { width: 100%; }
.figure figcaption { padding: .7rem 1rem; font-size: .85rem; color: var(--gris-suave); }
.credito { display: block; margin-top: .2rem; font-size: .8rem; }
.credito a { text-decoration: none; }
.credito a:hover { text-decoration: underline; }

/* ---------- Donaciones ---------- */
.support {
  background: var(--carbon-soft);
  border-left: 5px solid var(--rojo);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 820px;
  margin: 0 auto;
  padding: 1.8rem 2rem;
}
.support__eyebrow {
  text-transform: uppercase; letter-spacing: .16em; font-size: .78rem;
  font-weight: 600; color: var(--rojo-claro); margin: 0 0 .4rem;
}
.support__title {
  font-family: var(--font-display); font-weight: 600; margin: 0 0 .8rem;
  font-size: clamp(1.4rem, 3vw, 1.8rem); line-height: 1.15;
}
.support p { margin: 0 0 .9rem; color: var(--gris-suave); }
.support p strong { color: var(--hueso); }
.support__note { font-size: .95rem; font-style: italic; }
.support__actions { margin: 1.3rem 0 0; }

/* ---------- Video ---------- */
.video {
  margin-top: 2rem;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--carbon-deep);
}
.video iframe { width: 100%; height: 100%; border: 0; display: block; }
.video__foot { margin-top: 1rem; color: var(--gris-suave); font-size: .95rem; }

/* ---------- Contrataciones ---------- */
.contacto { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

/* ---------- Cierre ---------- */
.final-cta {
  background: linear-gradient(180deg, var(--carbon-deep), var(--carbon-noche));
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
  text-align: center;
  border-top: 1px solid var(--line);
}
.final-cta h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.2rem); }
.final-cta p { color: var(--gris-suave); margin-top: .75rem; }
.final-cta__actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; margin-top: 1.75rem; }

/* ---------- Footer ---------- */
.footer { background: var(--carbon-noche); padding: 2.5rem 0 1.75rem; border-top: 1px solid var(--line); }
.footer__inner { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; }
.footer__name { font-family: var(--font-display); font-weight: 600; }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.footer__links a { font-size: .95rem; text-decoration: none; }
.footer__copy { margin-top: 1.5rem; color: var(--gris-suave); font-size: .82rem; }