:root {
  --black: #0b0c0f;
  --black-soft: #181a1f;
  --red: #e31b23;
  --red-dark: #b90f17;
  --green: #0b9f43;
  --text: #16191e;
  --muted: #686e77;
  --line: #dde0e5;
  --surface: #f4f5f7;
  --container: 1180px;
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: #fff; }
a { color: inherit; }
img { max-width: 100%; }

.skip-link {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: #fff;
  background: var(--black);
  border-radius: 8px;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.product-container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
.product-header { position: sticky; z-index: 10; top: 0; color: #fff; background: rgba(11, 12, 15, 0.97); border-bottom: 1px solid rgba(255,255,255,0.1); backdrop-filter: blur(14px); }
.product-header-inner { display: grid; grid-template-columns: minmax(210px, 310px) 1fr auto; align-items: center; gap: 30px; min-height: 96px; }
.product-header img { display: block; width: 285px; height: auto; }
.product-header nav { display: flex; justify-content: center; gap: 28px; }
.product-header nav a { color: rgba(255,255,255,0.8); font-weight: 750; text-decoration: none; }
.product-header nav a:hover { color: #fff; }
.header-whatsapp, .primary-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 18px; color: #fff; background: var(--green); border-radius: 10px; font-weight: 850; text-align: center; text-decoration: none; }
.header-whatsapp:hover, .primary-cta:hover { filter: brightness(1.06); transform: translateY(-1px); }

.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; margin: 30px 0; color: var(--muted); font-size: 0.9rem; }
.breadcrumbs a { color: var(--red-dark); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }

.product-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr); gap: 54px; align-items: center; padding: 24px 0 64px; }
.product-photo { display: grid; min-height: 520px; place-items: center; overflow: hidden; background: linear-gradient(145deg, #fff, #eef0f3); border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 22px 55px rgba(19, 23, 31, 0.09); }
.product-photo img { width: 100%; height: 520px; object-fit: contain; padding: 36px; background: #fff; }
.product-photo-placeholder { display: grid; min-height: 520px; place-content: center; gap: 6px; color: #838993; text-align: center; }
.product-photo-placeholder::before { display: block; margin: 0 auto 18px; color: var(--red); content: "⚙"; font-size: 6rem; line-height: 1; }
.product-photo-placeholder span { color: #343941; font-size: 1.35rem; font-weight: 850; }
.product-kicker { margin: 0 0 12px; color: var(--red); font-size: 0.82rem; font-weight: 900; letter-spacing: 0.13em; text-transform: uppercase; }
.product-summary h1 { margin: 0; font-size: clamp(2.2rem, 5vw, 4.6rem); line-height: 0.98; letter-spacing: -0.055em; }
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.product-tags span { padding: 8px 11px; color: #363b43; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; font-size: 0.85rem; font-weight: 750; }
.availability { width: fit-content; margin: 24px 0 0; padding: 9px 12px; color: #454a52; background: #eef0f2; border-radius: 7px; font-weight: 750; }
.product-help { max-width: 570px; margin: 20px 0 24px; color: var(--muted); font-size: 1.05rem; line-height: 1.65; }
.primary-cta { min-height: 56px; padding-inline: 24px; font-size: 1rem; }
.product-summary > small { display: block; max-width: 560px; margin-top: 13px; color: var(--muted); line-height: 1.45; }

.product-info-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; padding: 0 0 90px; }
.product-info-card { padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 14px 34px rgba(19, 23, 31, 0.06); }
.product-info-card h2 { margin: 0 0 17px; font-size: 1.25rem; }
.product-info-card ul { display: grid; gap: 10px; margin: 0; padding-left: 20px; color: var(--muted); line-height: 1.45; }
.product-info-card p { margin: 0; color: var(--muted); line-height: 1.65; }
.store-card { color: #fff; background: linear-gradient(135deg, var(--black), var(--black-soft)); border-color: transparent; }
.store-card p { color: rgba(255,255,255,0.72); }

footer { padding: 34px 0; color: rgba(255,255,255,0.68); background: var(--black); }
footer .product-container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
footer strong { color: #fff; }
footer a { padding: 9px 12px; border: 1px solid rgba(255,255,255,0.24); border-radius: 8px; text-decoration: none; }

@media (max-width: 900px) {
  .product-header-inner { grid-template-columns: minmax(180px, 250px) 1fr; min-height: 82px; }
  .product-header nav { display: none; }
  .header-whatsapp { justify-self: end; font-size: 0.9rem; }
  .product-layout { grid-template-columns: 1fr; gap: 34px; }
  .product-photo, .product-photo-placeholder { min-height: 430px; }
  .product-photo img { height: 430px; }
  .product-info-grid { grid-template-columns: 1fr 1fr; }
  .store-card { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .product-container { width: min(100% - 28px, var(--container)); }
  .product-header-inner { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; min-height: 72px; }
  .product-header img { width: 180px; }
  .header-whatsapp { min-height: 42px; padding: 9px 11px; font-size: 0.74rem; }
  .breadcrumbs { margin: 22px 0; }
  .product-layout { padding: 6px 0 48px; }
  .product-photo, .product-photo-placeholder { min-height: 320px; }
  .product-photo img { height: 320px; padding: 22px; }
  .product-summary h1 { font-size: clamp(2.2rem, 12vw, 3.3rem); }
  .primary-cta { width: 100%; }
  .product-info-grid { grid-template-columns: 1fr; padding-bottom: 60px; }
  .store-card { grid-column: auto; }
  footer .product-container { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}