/* ==========================================================================
   Ausencia en Errores — components.css
   Piezas reutilizables: encabezado, navegación, botones, títulos, listas,
   formulario, animaciones y botón "volver arriba".
   ========================================================================== */

/* ---------- Encabezado ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-paper);
  border-bottom: 1px solid #e3ded2;
  transition: box-shadow .3s var(--ease);
}

.site-header.is-scrolled { box-shadow: 0 8px 28px -18px rgba(29, 29, 27, .45); }

.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: 68px; }

.site-header__logo img { width: clamp(140px, 6vw + 100px, 156px); transition: width .3s var(--ease); }
.site-header.is-scrolled .site-header__logo img { width: 132px; }

/* ---------- Navegación ---------- */
.site-nav__list { display: flex; align-items: center; gap: clamp(.9rem, 1.6vw, 1.25rem); }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: .5rem 0;
  font-size: .8125rem;
  font-weight: 500;
  color: var(--color-heading);
  transition: color .2s var(--ease);
}

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

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

.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;
  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-heading);
  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: 960px) {
  :root { --header-h: 72px; }

  .site-header__logo img,
  .site-header.is-scrolled .site-header__logo img { width: 132px; }
  .site-header.is-scrolled .site-header__inner { min-height: 64px; }

  .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-paper);
    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: 1.5rem;
    font-weight: 600;
    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: .75rem;
  min-height: 46px;
  padding: .8rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: .8125rem;
  font-weight: 600;
  line-height: 1.1;
  overflow: hidden;
  isolation: isolate;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.btn .icon { width: 1em; height: 1em; transition: transform .3s var(--ease); }
.btn:hover .icon { transform: translate(3px, -3px); }

/* Relleno que sube desde abajo */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  transform: translateY(101%);
  transition: transform .45s var(--ease);
}

.btn:hover::before { transform: none; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--outline { border-color: #d6d2c6; background: var(--color-white); color: var(--color-heading); }
.btn--outline::before { background: var(--color-dark); }
.btn--outline:hover { color: var(--color-white); border-color: var(--color-dark); }

.btn--dark { background: var(--color-dark); color: var(--color-white); border-radius: 6px; }
.btn--dark::before { background: var(--color-gold-dark); }

.btn--block { width: 100%; }

.btn[disabled] { opacity: .6; cursor: progress; transform: none; }

/* ---------- Títulos ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.25rem;
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--color-gold-text);
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: currentColor;
  transform-origin: left;
  transition: transform .8s var(--ease) .3s;
}

@media (scripting: enabled) and (prefers-reduced-motion: no-preference) {
  [data-reveal] .eyebrow::before { transform: scaleX(0); }
  [data-reveal].is-visible .eyebrow::before { transform: none; }
}

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

.section-title { font-size: var(--fs-h2); font-weight: 600; }
.section-title--lg { font-size: clamp(2rem, 1.35rem + 2.3vw, 3rem); line-height: 1.1; }
.section-title--xl { font-size: clamp(2.25rem, 1.45rem + 2.8vw, 3.5rem); line-height: 1.05; }
.section-title--light { color: var(--color-white); }

.section-title .block { display: block; }

.section-head { margin-bottom: clamp(2rem, 1.5rem + 2vw, 2.75rem); }

/* ---------- Lista con flechas (Necesidad → Decisión) ---------- */
.flow-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 1.15rem 1.1rem;
  border-top: 1px solid var(--color-line);
  font-size: clamp(1.125rem, 1rem + .4vw, 1.375rem);
  font-weight: 500;
  text-transform: uppercase;
  position: relative;
  transition: color .3s var(--ease), padding-left .35s var(--ease);
}

.flow-list li:last-child { border-bottom: 1px solid var(--color-line); }

.flow-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-gold);
}

.flow-list .icon { width: 1rem; height: 1rem; color: var(--color-gold-text); transition: transform .35s var(--ease); }

.flow-list li:hover { color: var(--color-gold-text); padding-left: 1.5rem; }
.flow-list li:hover .icon { transform: translateY(4px); }

.flow-list li.is-final { color: var(--color-gold-text); font-weight: 600; }

.flow-list--compact li { font-size: 1rem; padding-block: .85rem 1rem; }

/* Aparición escalonada */
@media (scripting: enabled) and (prefers-reduced-motion: no-preference) {
  .flow-list[data-reveal] li,
  .dot-list[data-reveal] li,
  .pillars[data-reveal] li { opacity: 0; transform: translateY(12px); transition: opacity .55s var(--ease), transform .55s var(--ease), color .3s var(--ease), padding-left .35s var(--ease); }
  .flow-list[data-reveal].is-visible li,
  .dot-list[data-reveal].is-visible li,
  .pillars[data-reveal].is-visible li { opacity: 1; transform: none; }
  [data-reveal].is-visible li:nth-child(2) { transition-delay: .12s; }
  [data-reveal].is-visible li:nth-child(3) { transition-delay: .24s; }
  [data-reveal].is-visible li:nth-child(4) { transition-delay: .36s; }
  [data-reveal].is-visible li:hover { transition-delay: 0s; }
}

/* ---------- Lista con puntos (evaluación) ---------- */
.dot-list li {
  position: relative;
  padding: .95rem 0 1rem .9rem;
  border-top: 1px solid var(--color-line);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  transition: color .3s var(--ease), padding-left .35s var(--ease);
}

.dot-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-gold);
}

.dot-list li:hover { padding-left: 1.3rem; }
.dot-list--light li { color: var(--color-white); border-color: rgba(212, 189, 120, .45); }
.dot-list--light li:hover { color: var(--color-gold-light); }

/* ---------- Formulario ---------- */
.form { display: grid; gap: 1rem; }

.form__field { display: grid; gap: .4rem; }

.form label { font-size: .75rem; font-weight: 600; color: var(--color-heading); }

.form input[type="text"],
.form input[type="email"],
.form textarea {
  width: 100%;
  padding: .75rem .9rem;
  border: 1px solid #e3e0d8;
  border-radius: 6px;
  background: var(--color-white);
  font: inherit;
  font-size: .875rem;
  color: var(--color-text);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.form textarea { resize: vertical; min-height: 6rem; }

.form input::placeholder,
.form textarea::placeholder { color: #8d8a82; }

.form input:focus,
.form textarea:focus { outline: none; border-color: var(--color-gold); box-shadow: 0 0 0 3px rgba(155, 129, 42, .2); }

.form [aria-invalid="true"] { border-color: #b3261e; box-shadow: 0 0 0 3px rgba(179, 38, 30, .12); }

.form__check {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-weight: 400 !important;
  font-size: .8125rem !important;
  line-height: 1.5;
  color: var(--color-muted) !important;
}

.form__check input { width: 1rem; height: 1rem; margin-top: .15rem; accent-color: var(--color-gold-dark); flex-shrink: 0; }
.form__check a { color: var(--color-gold-text); text-decoration: underline; text-underline-offset: 3px; }

.form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form__status { min-height: 1.25em; font-size: .875rem; font-weight: 500; }
.form__status:empty { display: none; }
.form__status.is-error { color: #b3261e; }
.form__status.is-ok { padding: .8rem 1rem; border-left: 3px solid var(--color-gold); background: #f6f1e2; color: var(--color-heading); }

.form__note { font-size: .6875rem; color: var(--color-muted); }

/* ---------- 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); }
  [data-reveal="right"] { transform: translateX(40px); }
  [data-reveal].is-visible { opacity: 1; transform: none; }
}

@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: 6px;
  background: var(--color-dark);
  color: var(--color-white);
  box-shadow: 0 10px 24px -8px rgba(29, 29, 27, .5);
  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-gold-dark); }

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