/* =========================================================
   CONSTRUFLORIDA — INTERACCIONES
   Archivo: estilos/interacciones.css
   ========================================================= */

.site-header {
  transition: background-color .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.site-header.is-scrolled {
  background: rgb(248 248 244 / 94%);
  border-bottom-color: rgb(25 61 50 / 12%);
  box-shadow: 0 12px 34px rgb(16 46 37 / 10%);
}

.scroll-progress {
  position: fixed;
  z-index: 4000;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--orange);
}

.js-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .62s cubic-bezier(.2,.7,.2,1), transform .62s cubic-bezier(.2,.7,.2,1);
  transition-delay: var(--reveal-delay, 0ms);
}

.js-reveal.reveal-left { transform: translateX(-22px); }
.js-reveal.reveal-right { transform: translateX(22px); }
.js-reveal.is-visible { opacity: 1; transform: none; }

.back-to-top {
  position: fixed;
  left: 24px;
  bottom: 24px;
  z-index: 2400;
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border: 1px solid rgb(25 61 50 / 15%);
  border-radius: 50%;
  background: rgb(248 248 244 / 94%);
  color: var(--green);
  box-shadow: 0 12px 30px rgb(18 46 36 / 12%);
  font-size: 19px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

.floating-whatsapp.notice { animation: whatsappNotice 1s ease 2; }
@keyframes whatsappNotice { 0%,100%{transform:translateY(0) scale(1)} 45%{transform:translateY(-4px) scale(1.035);box-shadow:0 20px 48px rgb(16 45 35 / 35%),0 0 0 9px rgb(29 121 88 / 9%)} }

.products-nav a { position: relative; }
.products-nav a.is-active-category { color: var(--orange-dark); }
.products-nav a.is-active-category::after { content:""; position:absolute; right:0; bottom:-9px; left:0; height:2px; background:var(--orange); }

.mobile-menu-toggle { display:none; position:relative; width:46px; height:46px; flex:0 0 auto; border:1px solid rgb(25 61 50 / 14%); border-radius:50%; background:rgb(248 248 244 / 80%); color:var(--green); cursor:pointer; }
.mobile-menu-toggle span,.mobile-menu-toggle span::before,.mobile-menu-toggle span::after { position:absolute; left:50%; width:18px; height:2px; background:currentColor; border-radius:99px; transform:translateX(-50%); transition:.2s ease; }
.mobile-menu-toggle span { top:50%; }
.mobile-menu-toggle span::before,.mobile-menu-toggle span::after { content:""; }
.mobile-menu-toggle span::before { top:-6px; }
.mobile-menu-toggle span::after { top:6px; }
.mobile-menu-toggle[aria-expanded="true"] span { background:transparent; }
.mobile-menu-toggle[aria-expanded="true"] span::before { top:0; transform:translateX(-50%) rotate(45deg); }
.mobile-menu-toggle[aria-expanded="true"] span::after { top:0; transform:translateX(-50%) rotate(-45deg); }

.mobile-menu { position:fixed; z-index:3500; top:var(--mobile-menu-top,90px); right:16px; left:16px; padding:10px; border:1px solid rgb(25 61 50 / 10%); border-radius:20px; background:rgb(248 248 244 / 98%); box-shadow:0 22px 60px rgb(13 40 31 / 17%); opacity:0; visibility:hidden; transform:translateY(-10px); transition:.2s ease; -webkit-backdrop-filter:blur(18px); backdrop-filter:blur(18px); }
.mobile-menu.is-open { opacity:1; visibility:visible; transform:translateY(0); }
.mobile-menu a { display:flex !important; align-items:center; justify-content:space-between; min-height:54px; padding:0 15px; border-bottom:1px solid rgb(25 61 50 / 8%); color:var(--green); font-size:14px; font-weight:700; text-decoration:none; }
.mobile-menu a:last-child { border-bottom:0; }
.mobile-menu a::after { content:"↗"; color:var(--orange-dark); font-size:17px; font-weight:400; }
body.mobile-menu-open { overflow:hidden; }

.site-toast { position:fixed; z-index:5000; left:50%; bottom:28px; max-width:min(460px,calc(100% - 40px)); padding:13px 17px; border-radius:12px; background:#102e25; color:#fff; box-shadow:0 16px 38px rgb(16 45 35 / 28%); font-size:12px; line-height:1.5; opacity:0; visibility:hidden; transform:translate(-50%,10px); transition:.2s ease; text-align:center; }
.site-toast.is-visible { opacity:1; visibility:visible; transform:translate(-50%,0); }

@media (max-width:780px) {
  .site-header nav { display:none !important; }
  .mobile-menu-toggle { display:block; }
  .back-to-top { left:17px; bottom:17px; width:46px; height:46px; }
  .site-toast { bottom:92px; }
}

@media (prefers-reduced-motion:reduce) {
  .js-reveal { opacity:1; transform:none; transition:none; }
  .floating-whatsapp.notice { animation:none; }
}