/* ==========================================================================
   Editorial Potencial Humano — components.css
   Piezas reutilizables: encabezado, navegación, botones, etiquetas,
   títulos de sección, listas, animaciones y botón "volver arriba".
   ========================================================================== */

/* ---------- Encabezado ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-navy);
  transition: box-shadow .3s var(--ease);
}

.site-header.is-scrolled { box-shadow: 0 10px 30px -16px rgba(0, 0, 0, .6); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--header-h);
  transition: min-height .3s var(--ease);
}

.site-header.is-scrolled .site-header__inner { min-height: 88px; }

.site-header__logo img {
  width: clamp(170px, 10vw + 90px, 216px);
  transition: width .3s var(--ease);
}

.site-header.is-scrolled .site-header__logo img { width: 170px; }

/* ---------- Navegación ---------- */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.2vw, 2rem);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: .5rem 0;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--color-white);
  transition: color .2s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: .15rem;
  width: 100%;
  height: 1px;
  background: var(--color-silver);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s var(--ease);
}

.site-nav__link:hover,
.site-nav__link.is-active { color: var(--color-silver); }

.site-nav__link:hover::after,
.site-nav__link.is-active::after { transform: scaleX(1); transform-origin: left; }

.nav-toggle {
  display: none;
  position: relative;
  z-index: 120;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-white);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1040px) {
  :root { --header-h: 88px; }

  .site-header__logo img,
  .site-header.is-scrolled .site-header__logo img { width: 160px; }
  .site-header.is-scrolled .site-header__inner { min-height: 76px; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-navy);
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s var(--ease), visibility .35s var(--ease);
  }

  .site-nav.is-open { opacity: 1; visibility: visible; }

  .site-nav__list { flex-direction: column; gap: 1rem; text-align: center; }

  .site-nav__link {
    font-size: 1.6rem;
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .4s var(--ease), transform .4s var(--ease), color .2s var(--ease);
  }

  .site-nav.is-open .site-nav__link { opacity: 1; transform: none; }
  .site-nav.is-open li:nth-child(2) .site-nav__link { transition-delay: .04s; }
  .site-nav.is-open li:nth-child(3) .site-nav__link { transition-delay: .08s; }
  .site-nav.is-open li:nth-child(4) .site-nav__link { transition-delay: .12s; }
  .site-nav.is-open li:nth-child(5) .site-nav__link { transition-delay: .16s; }
  .site-nav.is-open li:nth-child(6) .site-nav__link { transition-delay: .2s; }
  .site-nav.is-open li:nth-child(7) .site-nav__link { transition-delay: .24s; }
}

/* ---------- Botones ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 46px;
  padding: .8rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.1;
  overflow: hidden;
  isolation: isolate;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

/* Relleno que entra desde la izquierda al pasar el cursor */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}

.btn:hover::before { transform: scaleX(1); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--color-navy); color: var(--color-white); }
.btn--primary::before { background: var(--color-ink); }
.btn--primary:hover { box-shadow: 0 14px 28px -14px rgba(22, 39, 55, .8); }

.btn--outline { border-color: var(--color-navy); color: var(--color-navy); background: transparent; }
.btn--outline::before { background: var(--color-navy); }
.btn--outline:hover { color: var(--color-white); }

.btn--light { background: var(--color-white); color: var(--color-navy); }
.btn--light::before { background: var(--color-silver); }

/* ---------- Etiquetas y títulos ---------- */
.eyebrow {
  margin-bottom: 1rem;
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-navy);
}

.eyebrow--light { color: var(--color-white); }

.section-title { font-size: var(--fs-h2); }
.section-title--light { color: var(--color-white); }

.section-head { margin-bottom: clamp(2rem, 1.5rem + 2vw, 3rem); }

.lead { font-size: var(--fs-md); line-height: 1.6; }
.lead--light { color: rgba(255, 255, 255, .92); }

/* Etiquetas de temas */
.tags { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }

.tag {
  padding: .5rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-line);
  background: var(--color-white);
  font-size: .875rem;
  font-weight: 500;
  transition: background-color .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}

.tag:hover { background: var(--color-navy); border-color: var(--color-navy); color: var(--color-white); transform: translateY(-2px); }

/* Listas con línea divisoria y punto */
.list { margin-top: 2.25rem; }

.list li {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 1rem;
  transition: padding-left .35s var(--ease), color .35s var(--ease);
}

.list li::after {
  content: "";
  width: 4px;
  height: 4px;
  flex-shrink: 0;
  border-radius: 50%;
  background: #6f6f6e;
  transition: transform .35s var(--ease), background-color .35s var(--ease);
}

.list li:hover { padding-left: .6rem; }
.list li:hover::after { transform: scale(2); background: var(--color-navy); }

.list--light li { border-color: var(--color-line-dark); color: var(--color-white); }
.list--light li::after { background: rgba(255, 255, 255, .5); }
.list--light li:hover::after { background: var(--color-white); }

/* Los elementos de la lista aparecen uno tras otro */
@media (scripting: enabled) and (prefers-reduced-motion: no-preference) {
  [data-reveal] .list li { opacity: 0; transform: translateX(-12px); transition: opacity .5s var(--ease), transform .5s var(--ease), padding-left .35s var(--ease); }
  [data-reveal].is-visible .list li { opacity: 1; transform: none; }
  [data-reveal].is-visible .list li:nth-child(2) { transition-delay: .06s; }
  [data-reveal].is-visible .list li:nth-child(3) { transition-delay: .12s; }
  [data-reveal].is-visible .list li:nth-child(4) { transition-delay: .18s; }
  [data-reveal].is-visible .list li:nth-child(5) { transition-delay: .24s; }
  [data-reveal].is-visible .list li:nth-child(6) { transition-delay: .3s; }
  [data-reveal].is-visible .list li:nth-child(7) { transition-delay: .36s; }
  [data-reveal].is-visible .list li:nth-child(8) { transition-delay: .42s; }
  [data-reveal].is-visible .list li:hover { transition-delay: 0s; }
}

/* ---------- Animaciones de aparición (activadas por JS) ---------- */
@media (scripting: enabled) and (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .8s var(--ease), transform .8s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  }

  [data-reveal="right"] { transform: translateX(40px); }

  [data-reveal].is-visible { opacity: 1; transform: none; }
}

/* Entrada del hero (CSS puro para no afectar el LCP) */
@media (prefers-reduced-motion: no-preference) {
  .hero-anim {
    animation: fade-up .9s var(--ease) both;
    animation-delay: calc(var(--i, 0) * 130ms + 120ms);
  }
}

.hero-anim--1 { --i: 0; }
.hero-anim--2 { --i: 1; }
.hero-anim--3 { --i: 2; }
.hero-anim--4 { --i: 3; }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- Botón volver arriba ---------- */
.to-top {
  position: fixed;
  right: clamp(1rem, 2vw, 1.75rem);
  bottom: clamp(1rem, 2vw, 1.75rem);
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--color-navy);
  color: var(--color-white);
  box-shadow: 0 10px 24px -8px rgba(22, 39, 55, .6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s var(--ease), background-color .2s var(--ease);
}

.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--color-ink); }

.to-top svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}