/* ==========================================================================
   components.css — piezas reutilizables: icon, btn, section-head, header,
   footer, whatsapp flotante y lightbox
   ========================================================================== */

/* ---------- Icon ---------- */
.icon {
  width: 1.25em; height: 1.25em; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.75;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ---------- Botones ---------- */
.btn {
  --btn-bg: var(--blue-800); --btn-fg: var(--white); --btn-bd: transparent;
  --btn-bg-hover: var(--blue-900);
  display: inline-flex; align-items: center; justify-content: center; gap: .65em;
  min-height: 48px; padding: .8em 1.5em;
  font-size: var(--fs-sm); font-weight: 700; line-height: 1.2; text-align: center;
  color: var(--btn-fg); background: var(--btn-bg);
  border: 1.5px solid var(--btn-bd); border-radius: var(--r-sm);
  transition: background-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out),
              transform var(--dur-1) var(--ease-out);
}
.btn:hover { background: var(--btn-bg-hover); }
.btn:active { transform: scale(.98); }
.btn .icon { transition: transform var(--dur-2) var(--ease-out); }
.btn:hover .icon { transform: translateX(3px); }
.btn--gold { --btn-bg: var(--gold-400); --btn-fg: var(--blue-950); --btn-bg-hover: var(--gold-300); box-shadow: var(--shadow-gold); }
.btn--navy { --btn-bg: var(--blue-800); --btn-fg: var(--white); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--white); --btn-bd: rgb(255 255 255 / .4); --btn-bg-hover: rgb(255 255 255 / .12); }
.btn--outline { --btn-bg: transparent; --btn-fg: var(--blue-800); --btn-bd: var(--blue-800); --btn-bg-hover: var(--blue-50); }
.btn--sm { min-height: 42px; padding: .55em 1.15em; }
.btn--wa:hover .icon { transform: scale(1.12) rotate(-6deg); }

/* ---------- Encabezado de sección ---------- */
.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section-head h2 { font-size: var(--fs-2xl); font-weight: 800; letter-spacing: -.025em; color: var(--blue-800); }
.section-head p { margin-top: 1rem; max-width: 58ch; color: var(--ink-soft); font-size: var(--fs-md); }
.on-dark .section-head h2, .section-head--light h2 { color: var(--white); }
.on-dark .section-head p, .section-head--light p { color: rgb(255 255 255 / .78); }

/* ---------- Fondo "plano técnico" reutilizable ---------- */
.blueprint { position: relative; isolation: isolate; }
.blueprint::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgb(255 255 255 / .055) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / .055) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(100deg, #000 0%, transparent 75%);
          mask-image: linear-gradient(100deg, #000 0%, transparent 75%);
}

/* ---------- Header ---------- */
.site-header {
  --accent: var(--gold-400);
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
  height: var(--header-h); color: var(--white);
  transition: background-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out),
              height var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out);
}
.site-header.is-scrolled, .site-header.is-open {
  color: var(--ink); height: var(--header-h-scrolled);
  background: rgb(255 255 255 / .9);
  -webkit-backdrop-filter: saturate(1.5) blur(16px); backdrop-filter: saturate(1.5) blur(16px);
  box-shadow: 0 1px 0 var(--line), var(--shadow-sm);
}
/* El menú móvil es position:fixed; backdrop-filter en el padre lo atraparía, así que al abrir se usa fondo sólido */
.site-header.is-open { background: var(--white); -webkit-backdrop-filter: none; backdrop-filter: none; }
.site-header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.25rem; }

.brand img {
  width: 52px; height: 52px; filter: brightness(0) invert(1);
  transition: filter var(--dur-2) var(--ease-out), width var(--dur-2) var(--ease-out), height var(--dur-2) var(--ease-out);
}
.site-header.is-scrolled .brand img, .site-header.is-open .brand img { filter: none; width: 46px; height: 46px; }

.site-nav__list { display: flex; flex-direction: column; }
.site-nav__link { position: relative; display: inline-block; padding: .5rem 0; font-size: var(--fs-sm); font-weight: 600; }
.site-nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .15rem; height: 2px; border-radius: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-2) var(--ease-out);
}
.site-nav__link:hover::after, .site-nav__link[aria-current]::after { transform: scaleX(1); }

.site-header__actions { display: flex; align-items: center; gap: .6rem; }
.site-header__cta, .site-nav__cta { display: none; }

.lang-btn {
  display: inline-flex; align-items: center; gap: .45rem; min-height: 42px; padding: 0 .9rem;
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: .04em;
  border: 1.5px solid currentColor; border-radius: var(--r-pill); opacity: .92;
  transition: background-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out), opacity var(--dur-1);
}
.lang-btn:hover { opacity: 1; background: rgb(255 255 255 / .14); }
.site-header.is-scrolled .lang-btn:hover, .site-header.is-open .lang-btn:hover { background: var(--blue-50); }

.burger { position: relative; width: 44px; height: 44px; border-radius: var(--r-sm); }
.burger span {
  position: absolute; left: 11px; right: 11px; height: 2px; border-radius: 2px; background: currentColor;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-1);
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 27px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Panel móvil */
@media (max-width: 991.98px) {
  .site-nav {
    position: fixed; inset: var(--header-h-scrolled) 0 0 0; z-index: -1;
    display: flex; flex-direction: column; justify-content: space-between; gap: 2rem;
    padding: 2rem var(--gutter) calc(2rem + env(safe-area-inset-bottom));
    background: var(--white); color: var(--ink); overflow-y: auto;
    clip-path: inset(0 0 100% 0); visibility: hidden;
    transition: clip-path .55s var(--ease-in-out), visibility 0s linear .55s;
  }
  .site-header.is-open .site-nav { clip-path: inset(0); visibility: visible; transition-delay: 0s; }
  .site-nav__link { font-size: var(--fs-lg); font-weight: 700; padding: .85rem 0; border-bottom: 1px solid var(--line); display: block; }
  .site-nav__link::after { display: none; }
  .site-nav__cta { display: inline-flex; }
}

@media (min-width: 992px) {
  .burger { display: none; }
  .site-nav { flex: 1; display: flex; justify-content: center; }
  .site-nav__list { flex-direction: row; gap: clamp(1.25rem, 2.6vw, 2.5rem); }
  .site-header__cta { display: inline-flex; }
}

/* ---------- Footer ---------- */
.site-footer { background: var(--blue-950); color: rgb(255 255 255 / .8); padding-block: clamp(3.5rem, 6vw, 5.5rem) 1.75rem; font-size: var(--fs-sm); }
.site-footer__grid { display: grid; gap: 2.75rem; }
.site-footer__brand img { width: 64px; height: 64px; filter: brightness(0) invert(1); margin-bottom: 1.1rem; }
.site-footer__brand p { max-width: 36ch; }
.site-footer h3 { font-size: var(--fs-sm); font-weight: 700; color: var(--gold-300); margin-bottom: 1rem; }
.site-footer li + li { margin-top: .55rem; }
.footer-link { transition: color var(--dur-1); }
.footer-link:hover { color: var(--white); text-decoration: underline; text-underline-offset: 4px; }
.footer-line { display: flex; align-items: center; gap: .65rem; }
.footer-line .icon { color: var(--gold-400); }
.social { display: flex; gap: .65rem; margin-top: 1.4rem; }
.social a {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%;
  background: rgb(255 255 255 / .09); color: var(--white);
  transition: background-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}
.social a:hover { background: var(--gold-400); color: var(--blue-950); transform: translateY(-3px); }
.site-footer__copy { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgb(255 255 255 / .12); font-size: var(--fs-xs); color: rgb(255 255 255 / .6); }
@media (min-width: 768px) { .site-footer__grid { grid-template-columns: 1.6fr 1fr 1.2fr; gap: 3rem; } }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; z-index: var(--z-float);
  right: max(1.25rem, env(safe-area-inset-right)); bottom: max(1.25rem, env(safe-area-inset-bottom));
  display: grid; place-items: center; width: 58px; height: 58px; border-radius: 50%;
  background: var(--wa); color: var(--white); box-shadow: 0 10px 26px -6px rgb(0 0 0 / .4);
  opacity: 0; transform: translateY(14px) scale(.9); pointer-events: none;
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}
.wa-float .icon { width: 30px; height: 30px; }
.wa-float.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.wa-float.is-visible:hover { transform: scale(1.08); }
.wa-float::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--wa);
  animation: wa-pulse 2.8s var(--ease-out) infinite;
}
@keyframes wa-pulse { 0% { transform: scale(1); opacity: .7; } 70%, 100% { transform: scale(1.55); opacity: 0; } }

/* ---------- Lightbox (<dialog>) ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: var(--z-lightbox);
  width: 100%; height: 100%; max-width: none; max-height: none; margin: 0; padding: 0; border: 0;
  background: rgb(0 6 46 / .95); color: var(--white);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.lightbox::backdrop { background: transparent; }
.lightbox[open] { display: grid; grid-template-rows: 1fr auto; animation: lb-in .4s var(--ease-out); }
.lightbox.is-closing { animation: lb-out .25s var(--ease-in-out) forwards; }
@keyframes lb-in  { from { opacity: 0; } }
@keyframes lb-out { to { opacity: 0; } }
.lightbox__stage { position: relative; display: grid; place-items: center; padding: clamp(3.5rem, 8vh, 5rem) clamp(1rem, 7vw, 6rem) 1rem; min-height: 0; touch-action: pan-y; }
.lightbox__img {
  max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain;
  border-radius: var(--r-xs); box-shadow: var(--shadow-lg);
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-3) var(--ease-out);
}
.lightbox__img.is-loading { opacity: 0; transform: scale(.97); }
.lightbox__count { padding: 0 1rem 1.25rem; text-align: center; font-size: var(--fs-sm); font-weight: 600; color: rgb(255 255 255 / .75); font-variant-numeric: tabular-nums; }
.lightbox__btn {
  position: absolute; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%;
  background: rgb(255 255 255 / .1); color: var(--white);
  transition: background-color var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}
.lightbox__btn:hover { background: rgb(255 255 255 / .22); }
.lightbox__btn--close { top: max(1rem, env(safe-area-inset-top)); right: 1rem; }
.lightbox__btn--prev, .lightbox__btn--next { top: 50%; margin-top: -24px; }
.lightbox__btn--prev { left: clamp(.5rem, 1.5vw, 1.5rem); }
.lightbox__btn--next { right: clamp(.5rem, 1.5vw, 1.5rem); }
.lightbox__btn--prev:hover { transform: translateX(-3px); }
.lightbox__btn--next:hover { transform: translateX(3px); }
.lightbox__btn--close:hover { transform: rotate(90deg); }
@media (max-width: 640px) {
  .lightbox__btn--prev, .lightbox__btn--next { top: auto; bottom: .75rem; margin: 0; }
  .lightbox__stage { padding-inline: .75rem; }
}