/* ==========================================================================
   Web de Javier Cestino · layout
   Navegación, portada, secciones personales, contacto y pie.
   ========================================================================== */

/* ---------- Navegación ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-line);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  padding-top: env(safe-area-inset-top);
}

@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .site-header { background: var(--nav-solid); }
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  height: var(--nav-h);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  margin-right: auto;
  font-size: 1.0625rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav__links a {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--ink);
}

.nav__tools {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

.nav__lang,
.nav__icon-btn,
.nav__menu-btn {
  display: inline-grid;
  place-items: center;
  min-width: 2.75rem;
  height: 2.75rem;
  padding: 0 0.5rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.nav__lang:hover,
.nav__icon-btn:hover,
.nav__menu-btn:hover {
  background: color-mix(in srgb, var(--ink) 7%, transparent);
}

.theme-icon {
  width: 1.125rem;
  height: 1.125rem;
  grid-area: 1 / 1;
}

.nav__icon-btn .theme-icon { display: none; }
.nav__icon-btn[data-state="auto"] .theme-icon--auto,
.nav__icon-btn[data-state="light"] .theme-icon--light,
.nav__icon-btn[data-state="dark"] .theme-icon--dark { display: block; }

/* Hamburguesa de dos líneas que se convierte en × */
.burger {
  position: relative;
  display: block;
  width: 1.125rem;
  height: 0.75rem;
}

.burger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease), top 0.3s var(--ease);
}

.burger span:first-child { top: 0.125rem; }
.burger span:last-child { top: 0.5625rem; }

.nav__menu-btn[aria-expanded="true"] .burger span:first-child {
  top: 0.34375rem;
  transform: rotate(45deg);
}

.nav__menu-btn[aria-expanded="true"] .burger span:last-child {
  top: 0.34375rem;
  transform: rotate(-45deg);
}

/* Menú móvil */
@media (max-width: 47.99em) {
  .nav__links {
    display: none;
    position: fixed;
    inset: calc(var(--nav-h) + env(safe-area-inset-top) + 1px) 0 0 0;
    margin: 0;
    padding: 1.5rem max(var(--gutter), env(safe-area-inset-left)) calc(2rem + env(safe-area-inset-bottom));
    overflow-y: auto;
    background: var(--paper);
  }

  .is-open .nav__links { display: block; }

  .is-open.site-header {
    background: var(--paper);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .nav__links a {
    min-height: 3.5rem;
    font-size: 1.75rem;
    font-weight: 650;
    letter-spacing: -0.025em;
  }

  .nav__links a[aria-current="location"] { color: var(--clay-text); }

  @media (prefers-reduced-motion: no-preference) {
    .is-open .nav__links li {
      animation: menu-in 0.45s var(--ease) both;
    }
    .is-open .nav__links li:nth-child(2) { animation-delay: 0.04s; }
    .is-open .nav__links li:nth-child(3) { animation-delay: 0.08s; }
    .is-open .nav__links li:nth-child(4) { animation-delay: 0.12s; }
    .is-open .nav__links li:nth-child(5) { animation-delay: 0.16s; }
  }
}

@keyframes menu-in {
  from { opacity: 0; translate: 0 -0.5rem; }
  to { opacity: 1; translate: 0 0; }
}

html.menu-open { overflow: hidden; }

/* Navegación de escritorio */
@media (min-width: 48em) {
  .nav { gap: 0.5rem; }

  .nav__brand { margin-right: 0; flex: 1 1 0; }

  .nav__links {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2.5vw, 2rem);
    margin: 0;
  }

  .nav__links a {
    min-height: 2.75rem;
    font-size: 0.8125rem;
    color: color-mix(in srgb, var(--ink) 80%, transparent);
    transition: color 0.2s ease;
  }

  .nav__links a:hover,
  .nav__links a[aria-current="location"] { color: var(--ink); }

  .nav__tools { flex: 1 1 0; justify-content: flex-end; }

  .nav__menu-btn { display: none; }
}

/* ---------- Portada ---------- */
.hero {
  padding-block: clamp(4.5rem, 2rem + 11vw, 11rem) clamp(4rem, 2rem + 7vw, 8rem);
}

.hero__name {
  font-size: clamp(3.25rem, 1.2rem + 10.4vw, 8.75rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.045em;
  /* Compensa el lado izquierdo óptico de la «J» a tamaños grandes */
  margin-left: -0.04em;
}

.hero__lead {
  max-width: 34ch;
  margin-top: clamp(1.25rem, 0.8rem + 1.6vw, 2rem);
  font-size: clamp(1.3125rem, 1rem + 1.25vw, 2rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.022em;
  color: var(--graphite);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(2rem, 1.5rem + 2vw, 2.75rem);
}

.hero__now {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  min-height: 2.75rem;
  margin-top: clamp(2.5rem, 1.5rem + 4vw, 4.5rem);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
}

.hero__now span {
  text-decoration: underline;
  text-decoration-color: var(--hairline);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3em;
  transition: text-decoration-color 0.2s ease;
}

.hero__now:hover span { text-decoration-color: currentColor; }

.crumb-glyph {
  width: 0.875rem;
  height: auto;
  flex: none;
  fill: var(--clay);
}

/* ---------- Secciones ---------- */
.section { padding-block: var(--section-space); }

.section + .section,
.hero + .section { padding-top: 0; }

.section-title {
  font-size: clamp(2.125rem, 1.4rem + 3.2vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.split {
  display: grid;
  gap: clamp(1rem, 0.5rem + 2vw, 1.75rem);
}

@media (min-width: 48em) {
  .split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 2.5rem;
    align-items: baseline;
  }
}

.prose-lg {
  max-width: 38rem;
  font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem);
  font-weight: 450;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.prose-lg p + p { margin-top: 1em; }

/* ---------- Proyectos: hueco para lo siguiente ---------- */
.next {
  display: grid;
  gap: 0.5rem 2.5rem;
  margin-top: clamp(2rem, 1rem + 4vw, 4rem);
  padding: clamp(1.5rem, 1rem + 2.4vw, 2.75rem);
  border: 1.5px dashed var(--hairline);
  border-radius: var(--radius-l);
}

@media (min-width: 48em) {
  .next {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: baseline;
  }
}

.next__title {
  font-size: 1.3125rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.next__text {
  max-width: 34rem;
  color: var(--graphite);
}

/* ---------- Contacto ---------- */
.contact {
  background: var(--mist);
  text-align: center;
}

.section.contact { padding-top: var(--section-space); }

.contact__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact__title {
  font-size: clamp(3rem, 1.4rem + 8vw, 7.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.contact__text {
  max-width: 30rem;
  margin-top: 1.25rem;
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.3125rem);
  color: var(--graphite);
}

.contact__email {
  display: inline-block;
  max-width: 100%;
  margin-top: clamp(2rem, 1.5rem + 2vw, 3rem);
  padding-block: 0.25rem;
  font-size: clamp(1.125rem, 0.65rem + 3.6vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
  text-decoration: underline;
  text-decoration-color: var(--hairline);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.22em;
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}

.contact__email:hover {
  color: var(--clay-text);
  text-decoration-color: currentColor;
}

.contact .btn--secondary:hover { background: var(--paper); }

.contact__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* ---------- Pie ---------- */
.site-footer {
  background: var(--mist);
  border-top: 1px solid var(--hairline);
  font-size: 0.8125rem;
  color: var(--graphite);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  padding-block: 0.75rem calc(0.75rem + env(safe-area-inset-bottom));
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  text-decoration: none;
}

.site-footer a:hover { color: var(--ink); text-decoration: underline; }

/* ---------- Experiencia y habilidades ----------
   Trayectoria, voluntariado y habilidades comparten la misma rejilla
   (fecha o etiqueta | contenido) para que las columnas se alineen. */
.timeline,
.tech-list {
  max-width: 40rem;
  margin: clamp(2rem, 1.5rem + 2vw, 3rem) 0 0;
  border-top: 1px solid var(--hairline);
}

.timeline__item,
.tech-row {
  display: grid;
  gap: 0.375rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--hairline);
}

@media (min-width: 40em) {
  .timeline__item,
  .tech-row {
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: 1.5rem;
    align-items: baseline;
  }
}

.timeline__when,
.tech-row dt {
  font-size: 0.9375rem;
  color: var(--graphite);
  font-variant-numeric: tabular-nums;
}

.timeline__now {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--clay);
  vertical-align: 0.08em;
}

.timeline__role {
  font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.timeline__org {
  margin-top: 0.125rem;
  color: var(--graphite);
}

.timeline__note {
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  color: var(--graphite);
}

.subhead {
  margin-top: clamp(3rem, 2rem + 4vw, 5rem);
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.subhead + .timeline,
.subhead + .tech-list { margin-top: 1.25rem; }

.tech-row dd { margin: 0; }

.tech-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin: 0;
}

.tech-items li {
  font-size: clamp(1.625rem, 1.25rem + 1.6vw, 2.5rem);
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.tech-items__level {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--graphite);
}