/* ─── PROTEC-MTY · ESTILOS DE TIENDA (catálogo + detalle) ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { overflow-x: hidden; scroll-behavior: smooth; font-size: 16px; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

:root {
  --white:#FFFFFF; --bg-alt:#F5F6F8; --bg-soft:#EEF0F3;
  --ink:#1A1D21; --ink-muted:#5A6068; --ink-soft:#8A9099;
  --accent:#D81F2A; --accent-dark:#A8121C; --accent-soft:#FCE9EA;
  --navy:#1E2A63; --dark:#0E0F11; --dark-2:#16181C; --dark-surface:#1E2228;
  --border:#E2E5EA; --border-dark:rgba(255,255,255,0.10);
  --max:1200px; --pad:clamp(20px,5vw,72px); --ease:cubic-bezier(0.16,1,0.3,1); --header-h:76px;
  --z-nav:100; --z-float:400;
}
body {
  font-family:'Inter',sans-serif; font-size:1rem; line-height:1.65;
  color:var(--ink); background:var(--white); -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
h1,h2,h3,h4 { font-family:'Oswald',sans-serif; color:var(--ink); text-transform:uppercase; letter-spacing:.005em; font-weight:700; }
p { text-wrap:pretty; }
.container { max-width:var(--max); margin:0 auto; padding:0 var(--pad); }

/* Botones */
.btn {
  position:relative; overflow:hidden; display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:14px 30px; border-radius:4px; font-family:'Oswald',sans-serif; font-size:.92rem; font-weight:600;
  letter-spacing:.06em; text-transform:uppercase;
  transition:background .2s,color .2s,box-shadow .2s,transform .15s,border-color .2s; white-space:nowrap;
}
.btn:focus-visible { outline:2px solid var(--accent); outline-offset:3px; }
.btn--wa { background:#22C55E; color:#fff; box-shadow:0 4px 14px rgba(34,197,94,.28); }
.btn--wa:hover { background:#16A34A; transform:translateY(-2px); box-shadow:0 6px 20px rgba(34,197,94,.35); }
.btn--ghost { background:transparent; color:var(--ink); border:1.5px solid var(--border); }
.btn--ghost:hover { border-color:var(--accent); color:var(--accent); }
.btn--lg { padding:17px 36px; font-size:1rem; width:100%; }

/* Header */
.site-header {
  position:sticky; top:0; z-index:var(--z-nav); background:rgba(14,15,17,.97);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-dark);
}
.header-inner { display:flex; align-items:center; justify-content:space-between; gap:24px; height:var(--header-h); }
.logo__img { height:40px; width:auto; display:block; }
.header-nav { display:flex; align-items:center; gap:30px; }
.header-nav a {
  font-family:'Oswald',sans-serif; font-size:.92rem; font-weight:500; letter-spacing:.05em;
  text-transform:uppercase; color:rgba(255,255,255,.85); transition:color .2s;
}
.header-nav a:hover { color:var(--accent); }
.header-back { display:inline-flex; align-items:center; gap:7px; color:rgba(255,255,255,.85); font-family:'Oswald',sans-serif; font-size:.9rem; font-weight:500; letter-spacing:.04em; text-transform:uppercase; transition:color .2s; }
.header-back:hover { color:var(--accent); }
.header-back svg { transition:transform .2s var(--ease); }
.header-back:hover svg { transform:translateX(-3px); }

/* Encabezado de página */
.page-head { background:var(--dark); position:relative; overflow:hidden; padding:clamp(48px,7vw,80px) 0 clamp(40px,6vw,64px); }
.page-head::before { content:''; position:absolute; inset:0; background:radial-gradient(circle at 80% 30%, rgba(216,31,42,.18) 0%, transparent 50%); }
.page-head__inner { position:relative; }
.page-head .label { display:inline-block; font-family:'Oswald',sans-serif; font-size:.78rem; font-weight:600; letter-spacing:.2em; text-transform:uppercase; color:var(--accent); margin-bottom:14px; }
.page-head h1 { color:#fff; font-size:clamp(2rem,5vw,3.4rem); line-height:1.02; }
.page-head p { color:rgba(255,255,255,.65); margin-top:16px; max-width:60ch; }
.breadcrumb { display:flex; gap:8px; align-items:center; font-size:.8rem; color:rgba(255,255,255,.5); margin-bottom:18px; }
.breadcrumb a { color:rgba(255,255,255,.75); transition:color .2s; }
.breadcrumb a:hover { color:var(--accent); }

/* Catálogo */
.catalogo { padding:clamp(40px,6vw,72px) 0 clamp(56px,8vw,96px); }
.catalogo__toolbar { display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin-bottom:34px; }
.filtro {
  font-family:'Oswald',sans-serif; font-size:.82rem; font-weight:500; letter-spacing:.04em; text-transform:uppercase;
  color:var(--ink-muted); background:var(--bg-alt); border:1.5px solid var(--border); border-radius:100px;
  padding:9px 20px; transition:all .2s;
}
.filtro:hover { border-color:var(--accent); color:var(--accent); }
.filtro.active { background:var(--accent); border-color:var(--accent); color:#fff; }
.prod-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.prod-card {
  display:flex; flex-direction:column; border:1px solid var(--border); border-radius:12px; overflow:hidden;
  background:#fff; transition:transform .4s var(--ease), box-shadow .4s ease; height:100%;
}
.prod-card:hover { transform:translateY(-6px); box-shadow:0 20px 42px -18px rgba(10,11,13,.3); }
.prod-card__media { position:relative; aspect-ratio:1/1; background:linear-gradient(160deg,#f3f4f6,#e7e9ee); overflow:hidden; }
.prod-card__media img { width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.prod-card:hover .prod-card__media img { transform:scale(1.05); }
.prod-card__tag { position:absolute; top:12px; left:12px; background:rgba(14,15,17,.85); color:#fff; font-family:'Oswald',sans-serif; font-size:.64rem; font-weight:600; letter-spacing:.1em; text-transform:uppercase; padding:5px 11px; border-radius:100px; }
.prod-card__body { padding:18px 18px 20px; display:flex; flex-direction:column; flex:1; }
.prod-card__linea { font-size:.68rem; font-weight:600; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); margin-bottom:5px; }
.prod-card__name { font-family:'Oswald',sans-serif; font-size:1.02rem; font-weight:600; text-transform:uppercase; color:var(--ink); line-height:1.15; margin-bottom:6px; }
.prod-card__color { font-size:.8rem; color:var(--ink-muted); line-height:1.4; margin-bottom:14px; flex:1; }
.prod-card__foot { display:flex; align-items:center; justify-content:space-between; gap:10px; }
.prod-card__price { font-family:'Oswald',sans-serif; font-size:1.25rem; font-weight:700; color:var(--ink); }
.prod-card__price span { font-size:.7rem; font-weight:500; color:var(--ink-soft); }
.prod-card__cta { display:inline-flex; align-items:center; gap:5px; font-family:'Oswald',sans-serif; font-size:.74rem; font-weight:600; letter-spacing:.08em; text-transform:uppercase; color:var(--accent); transition:gap .2s; }
.prod-card:hover .prod-card__cta { gap:9px; }
.catalogo__empty { text-align:center; color:var(--ink-muted); padding:60px 0; grid-column:1/-1; }

/* Detalle de producto */
.detalle { padding:clamp(36px,5vw,64px) 0 clamp(56px,8vw,96px); }
.detalle__grid { display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,5vw,64px); align-items:start; }
.detalle__gallery { position:sticky; top:calc(var(--header-h) + 24px); }
.detalle__main { aspect-ratio:1/1; border:1px solid var(--border); border-radius:14px; overflow:hidden; background:linear-gradient(160deg,#f3f4f6,#e7e9ee); }
.detalle__main img { width:100%; height:100%; object-fit:cover; }
.detalle__thumbs { display:flex; gap:12px; margin-top:12px; }
.detalle__thumb { width:84px; aspect-ratio:1/1; border:2px solid var(--border); border-radius:10px; overflow:hidden; background:#f3f4f6; transition:border-color .2s; padding:0; }
.detalle__thumb img { width:100%; height:100%; object-fit:cover; }
.detalle__thumb.active { border-color:var(--accent); }
.detalle__linea { font-family:'Oswald',sans-serif; font-size:.78rem; font-weight:600; letter-spacing:.16em; text-transform:uppercase; color:var(--accent); margin-bottom:10px; }
.detalle__name { font-size:clamp(1.6rem,3.2vw,2.4rem); line-height:1.04; margin-bottom:14px; }
.detalle__price { font-family:'Oswald',sans-serif; font-size:2rem; font-weight:700; color:var(--ink); margin-bottom:4px; }
.detalle__price span { font-size:.9rem; font-weight:500; color:var(--ink-soft); }
.detalle__desc { color:var(--ink-muted); line-height:1.7; margin:20px 0 26px; max-width:52ch; }
.spec-list { border-top:1px solid var(--border); margin-bottom:26px; }
.spec-row { display:flex; gap:16px; padding:13px 0; border-bottom:1px solid var(--border); font-size:.9rem; }
.spec-row__k { width:130px; flex-shrink:0; font-weight:600; color:var(--ink); font-family:'Oswald',sans-serif; letter-spacing:.03em; text-transform:uppercase; font-size:.82rem; }
.spec-row__v { color:var(--ink-muted); }
.opt-group { margin-bottom:26px; }
.opt-group__label { font-family:'Oswald',sans-serif; font-size:.82rem; font-weight:600; letter-spacing:.06em; text-transform:uppercase; color:var(--ink); margin-bottom:12px; }
.opt-group__label span { color:var(--accent); }
.opt-chips { display:flex; flex-wrap:wrap; gap:10px; }
.opt-chip {
  min-width:64px; padding:12px 18px; border:1.5px solid var(--border); border-radius:8px; background:#fff;
  font-family:'Oswald',sans-serif; font-size:1rem; font-weight:600; color:var(--ink); transition:all .2s;
}
.opt-chip:hover { border-color:var(--ink-soft); }
.opt-chip.active { border-color:var(--accent); background:var(--accent-soft); color:var(--accent-dark); }
.detalle__actions { display:flex; flex-direction:column; gap:12px; }
.detalle__note { display:flex; align-items:center; gap:8px; font-size:.82rem; color:var(--ink-muted); margin-top:4px; }
.detalle__note svg { color:#22C55E; flex-shrink:0; }
.detalle__trust { display:flex; flex-direction:column; gap:10px; margin-top:26px; padding-top:22px; border-top:1px solid var(--border); }
.detalle__trust-item { display:flex; align-items:center; gap:10px; font-size:.84rem; color:var(--ink-muted); }
.detalle__trust-item svg { color:var(--accent); flex-shrink:0; }

/* Relacionados */
.relacionados { padding:0 0 clamp(56px,8vw,96px); }
.relacionados h2 { font-size:clamp(1.3rem,2.4vw,1.8rem); margin-bottom:28px; }

/* Footer (compacto) */
footer { background:var(--dark-2); color:rgba(255,255,255,.62); padding:clamp(40px,5vw,56px) 0 0; }
.footer-grid { display:grid; grid-template-columns:1.6fr 1fr 1.3fr; gap:40px; padding-bottom:40px; }
.footer-logo__img { height:36px; width:auto; margin-bottom:16px; }
.footer-about { font-size:.86rem; line-height:1.6; max-width:30ch; }
.footer-col h4 { font-family:'Oswald',sans-serif; font-size:.82rem; font-weight:600; letter-spacing:.14em; text-transform:uppercase; color:#fff; margin-bottom:16px; }
.footer-col ul { display:flex; flex-direction:column; gap:10px; }
.footer-col a { font-size:.86rem; transition:color .15s; }
.footer-col a:hover { color:var(--accent); }
.footer-contact-row { display:flex; align-items:flex-start; gap:10px; font-size:.86rem; margin-bottom:12px; }
.footer-contact-row svg { flex-shrink:0; margin-top:3px; color:var(--accent); }
.footer-bottom { border-top:1px solid var(--border-dark); padding:20px 0; text-align:center; font-size:.78rem; color:rgba(255,255,255,.42); }

/* WhatsApp flotante */
.wa-float { position:fixed; bottom:24px; right:24px; z-index:var(--z-float); width:54px; height:54px; border-radius:50%; background:#22C55E; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 16px rgba(34,197,94,.4); transition:transform .2s, box-shadow .2s; }
.wa-float:hover { transform:scale(1.08); box-shadow:0 6px 24px rgba(34,197,94,.5); }

/* Reveal */
.reveal { opacity:0; transform:translateY(18px); transition:opacity .6s var(--ease), transform .6s var(--ease); will-change:opacity,transform; }
.reveal.visible { opacity:1; transform:none; }

/* Responsive */
@media (max-width:1024px){ .prod-grid{ grid-template-columns:repeat(3,1fr);} }
@media (max-width:900px){
  .header-nav{ display:none; }
  :root{ --header-h:64px; }
  .logo__img{ height:32px; }
  .detalle__grid{ grid-template-columns:1fr; gap:28px; }
  .detalle__gallery{ position:static; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:30px; }
}
@media (max-width:680px){ .prod-grid{ grid-template-columns:repeat(2,1fr); gap:16px; } }
@media (max-width:420px){
  .prod-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
}
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}