:root {
  --beige-100: #faf6ef;
  --beige-200: #f1e9dc;
  --beige-300: #e2d4bf;
  --celeste-100: #e4f0f8;
  --celeste-300: #bcdaec;
  --celeste-500: #7fb2d1;
  --tinta: #2c3a46;
  --tinta-suave: #5b6975;
  --enlace: #2f6489;

  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: "Figtree", "Helvetica Neue", Arial, sans-serif;

  --margen: max(1.25rem, calc((100% - 68rem) / 2));
}

*, *::before, *::after { box-sizing: border-box; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--beige-100);
  color: var(--tinta);
  font: 400 1.0625rem/1.65 var(--sans);
}

h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; line-height: 1.05; }
p, dl, dd, ul { margin: 0; }
ul { padding: 0; list-style: none; }

:focus-visible {
  outline: 3px solid var(--celeste-500);
  outline-offset: 3px;
}

/* ---------- Saltar al contenido ---------- */
.saltar {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.6rem 1rem;
  border-radius: 0.5rem;
  background: var(--tinta);
  color: #fff;
}
.saltar:focus { top: 1rem; }

/* ---------- Cabecera y menús ---------- */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding: 0.75rem var(--margen);
  background: rgba(250, 246, 239, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--beige-300);
}

.cabecera ul { display: flex; flex-wrap: wrap; gap: 0.25rem; }

.cabecera a {
  display: block;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  color: var(--tinta);
  text-decoration: none;
  font-size: 0.95rem;
  transition: background 0.2s;
}

.cabecera a:hover { background: var(--celeste-100); }
.cabecera a[aria-current="page"] { background: var(--celeste-300); font-weight: 600; }
.nav-sitio a { color: var(--enlace); }

/* ---------- Perfil ---------- */
.perfil {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3rem;
  padding: clamp(3rem, 8vw, 6rem) var(--margen);
}

.perfil h1 {
  font-size: clamp(3.4rem, 9vw, 6.5rem);
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
}

.carrera {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: var(--enlace);
  margin-bottom: 1rem;
}

.presentacion {
  max-width: 34rem;
  color: var(--tinta-suave);
  margin-bottom: 1.75rem;
}

.etiquetas { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.etiquetas li {
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: var(--celeste-100);
  border: 1px solid var(--celeste-300);
  font-size: 0.9rem;
}

/* Retrato en arco: el elemento más memorable de la página */
.retrato {
  position: relative;
  justify-self: center;
  width: min(100%, 21rem);
  margin: 0;
}

.retrato::before {
  content: "";
  position: absolute;
  right: -1.5rem;
  bottom: -1.5rem;
  width: 85%;
  height: 85%;
  border-radius: 50% 50% 1.5rem 1.5rem / 36% 36% 1.5rem 1.5rem;
  background: var(--celeste-300);
}

.retrato img {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: var(--beige-200);
  border-radius: 50% 50% 1.5rem 1.5rem / 36% 36% 1.5rem 1.5rem;
}

.retrato figcaption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---------- Secciones ---------- */
.seccion { padding: clamp(3rem, 7vw, 5rem) var(--margen); }
.seccion-arena { background: var(--beige-200); }

.seccion-cabecera { max-width: 38rem; margin-bottom: 2.25rem; }
.seccion-cabecera h2 { font-size: clamp(2.2rem, 5vw, 3.25rem); margin-bottom: 0.6rem; }
.seccion-cabecera p { color: var(--tinta-suave); }

/* ---------- Foja académica ---------- */
.resumen { display: flex; flex-wrap: wrap; gap: 1rem 3rem; margin-bottom: 2.5rem; }

.resumen div { display: flex; flex-direction: column-reverse; }
.resumen dt { color: var(--tinta-suave); font-size: 0.95rem; }
.resumen dd { font-family: var(--serif); font-size: 3rem; line-height: 1; color: var(--enlace); }

.subtitulo { font-size: 1.6rem; margin-bottom: 1rem; }

.anios {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  align-items: start;
  gap: 1rem;
}

details {
  padding: 0 1.25rem;
  background: var(--beige-100);
  border: 1px solid var(--beige-300);
  border-radius: 1.25rem;
}

summary {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: "+";
  margin-left: 0.25rem;
  color: var(--enlace);
  font-size: 1.3rem;
  line-height: 1;
}

details[open] summary::after { content: "–"; }

.anio { font-family: var(--serif); font-size: 2.1rem; line-height: 1; }
.cantidad { margin-left: auto; font-size: 0.85rem; color: var(--tinta-suave); }

details ul {
  display: grid;
  gap: 0.5rem;
  padding: 1rem 0 1.25rem;
  border-top: 1px solid var(--beige-300);
}

details li, .en-curso li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.97rem;
  line-height: 1.45;
}

details li::before, .en-curso li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--celeste-500);
}

.en-curso {
  margin-top: 1.5rem;
  padding: 1.5rem 1.75rem;
  background: var(--celeste-100);
  border: 1px solid var(--celeste-300);
  border-radius: 1.25rem;
}

.en-curso h3 { font-size: 1.6rem; margin-bottom: 1rem; }

.en-curso ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.6rem 1.5rem;
}

/* ---------- Datos académicos ---------- */
.fichas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1.25rem;
}

.ficha {
  padding: 1.75rem;
  background: #fff;
  border: 1px solid var(--beige-300);
  border-radius: 1.25rem;
}

.ficha-ancha { grid-column: 1 / -1; background: var(--celeste-100); border-color: var(--celeste-300); }

.ficha h3 {
  margin-bottom: 1.1rem;
  font-style: italic;
  font-size: 1.7rem;
  color: var(--enlace);
}

.ficha dt { font-size: 0.85rem; color: var(--tinta-suave); }
.ficha dd { margin-bottom: 0.85rem; }
.ficha dd:last-child { margin-bottom: 0; }

/* ---------- Pie ---------- */
.pie {
  padding: 2.5rem var(--margen);
  background: var(--celeste-100);
  border-top: 1px solid var(--celeste-300);
}

.pie p {
  max-width: 46rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--tinta-suave);
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .perfil { grid-template-columns: 1fr; gap: 3rem; }
  .retrato { width: min(80%, 18rem); margin-right: 1.5rem; }
  .cabecera { position: static; }
}