/* ═══════════════════════════════════════════════════════════
   QUALIBELT — Performance (v2, 2026-10-03)
   White field, black type, maroon as the single accent.
   Archivo variable (wdth 62–125): expanded caps for display,
   normal width for body. No vintage cues: no serifs, no stamps,
   no French, no sepia. Modern, athletic, confident.
   ═══════════════════════════════════════════════════════════ */

:root {
  --white:       oklch(99.3% 0 0);
  --panel:       oklch(95.6% 0.004 22);
  --panel-2:     oklch(92.5% 0.006 22);
  --ink:         oklch(15% 0.01 22);
  --ink-soft:    oklch(36% 0.01 22);
  --ink-faint:   oklch(47% 0.01 22);
  --line:        oklch(89% 0.006 22);
  --maroon:      oklch(40% 0.14 22);
  --maroon-deep: oklch(32% 0.13 22);
  --maroon-ink:  oklch(24% 0.09 22);     /* band background */
  --on-maroon:   oklch(97% 0.008 22);
  --on-maroon-2: oklch(84% 0.03 22);

  --font: "Archivo", "Helvetica Neue", Arial, sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   clamp(1.125rem, 1rem + 0.5vw, 1.3rem);
  --text-xl:   clamp(1.8rem, 1.1rem + 2.4vw, 3rem);
  --text-hero: clamp(2.5rem, 1.1rem + 5.4vw, 5.6rem);
  --text-band: clamp(2.2rem, 0.8rem + 5.6vw, 6rem);

  --sp-xs: 0.5rem; --sp-sm: 0.75rem; --sp-md: 1rem; --sp-lg: 1.5rem;
  --sp-xl: 2rem; --sp-2xl: 3rem; --sp-3xl: 4rem; --sp-4xl: 6rem;
  --sp-section: clamp(4rem, 2rem + 7vw, 8.5rem);
  --gutter: clamp(1.25rem, 4vw, 3.5rem);

  --ease-out: cubic-bezier(0.25, 1, 0.5, 1);
  --t-fast: 150ms; --t-med: 260ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
::selection { background: var(--maroon); color: var(--on-maroon); }
:is(a, button):focus-visible { outline: 2px solid var(--maroon); outline-offset: 3px; }

.wrap { max-width: 84rem; margin-inline: auto; padding-inline: var(--gutter); }
.skip-link { position: absolute; left: var(--sp-md); top: -4rem; z-index: 100; background: var(--ink); color: var(--white); padding: 0.7rem 1.2rem; text-decoration: none; }
.skip-link:focus { top: var(--sp-md); }

/* ─── type ─── */
.display {
  font-family: var(--font);
  font-weight: 800;
  font-stretch: 112%;
  text-transform: uppercase;
  line-height: 0.96;
  letter-spacing: -0.012em;
  text-wrap: balance;
}
.display em { font-style: italic; color: var(--maroon); }
.eyebrow {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--maroon);
}
p { max-width: 62ch; }

/* ─── buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 0.55em;
  min-height: 48px; padding: 0 1.7rem;
  font-family: var(--font); font-size: 0.85rem; font-weight: 700;
  letter-spacing: 0.07em; text-transform: uppercase;
  text-decoration: none; white-space: nowrap;
  border: 0; cursor: pointer;
  transition: background var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out), box-shadow var(--t-fast);
}
.btn .arrow { transition: translate var(--t-med) var(--ease-out); }
.btn:hover .arrow { translate: 0.3em 0; }
.btn-primary { background: var(--maroon); color: var(--on-maroon); }
.btn-primary:hover { background: var(--maroon-deep); }
.btn-outline { color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); background: transparent; }
.btn-outline:hover { background: var(--ink); color: var(--white); }
.btn-light { background: var(--white); color: var(--maroon-ink); }
.btn-light:hover { background: var(--panel); }
.btn .btn-short { display: none; }

/* ─── header ─── */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--white) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-head__row { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-lg); min-height: 4.25rem; }
.brand {
  font-weight: 800; font-stretch: 125%;
  font-size: 1.1rem; letter-spacing: 0.02em; text-transform: uppercase;
  text-decoration: none;
}
.site-nav { display: flex; align-items: center; gap: var(--sp-xl); min-width: 0; }
.site-nav .nav-link {
  font-size: var(--text-sm); font-weight: 600;
  text-decoration: none; color: var(--ink-soft);
  padding-block: 0.6rem; position: relative;
}
.site-nav .nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.2rem; height: 2px;
  background: var(--maroon); scale: 0 1; transform-origin: left;
  transition: scale var(--t-med) var(--ease-out);
}
.site-nav .nav-link:hover { color: var(--ink); }
.site-nav .nav-link:hover::after { scale: 1 1; }
.lang-switch { display: inline-flex; border: 1px solid var(--line); }
.lang-switch a {
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em;
  padding: 0 0.7rem; min-height: 44px; display: inline-flex; align-items: center;
  text-decoration: none; color: var(--ink-faint);
}
.lang-switch a[aria-current="true"] { background: var(--ink); color: var(--white); }

/* ─── hero ─── */
.hero__grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem); align-items: center;
  padding-block: clamp(2.5rem, 5vw, 5.5rem);
}
/* hero headline sizes to its column, not the viewport: "CONFIDENCE" must never cross into the photo */
.hero h1 { font-size: clamp(2.3rem, 0.6rem + 4.6vw, 4.6rem); font-stretch: 100%; margin-top: var(--sp-lg); }
.hero__grid > * { min-width: 0; }
.hero__lede { margin-top: var(--sp-lg); font-size: var(--text-lg); color: var(--ink-soft); max-width: 42ch; }
.hero__cta { margin-top: var(--sp-xl); display: flex; flex-wrap: wrap; gap: var(--sp-sm); }
.hero__fig { background: var(--panel); aspect-ratio: 4 / 5; overflow: hidden; }
.hero__fig img { width: 100%; height: 100%; object-fit: cover; }

/* ─── facts strip ─── */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.facts > div { padding: var(--sp-lg) var(--gutter); display: grid; gap: 0.2rem; align-content: start; }
.facts > div + div { border-left: 1px solid var(--line); }
.facts strong { font-weight: 800; font-stretch: 112%; font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem); line-height: 1.1; }
.facts span { font-size: var(--text-sm); color: var(--ink-faint); }

/* ─── products ─── */
.product {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem); align-items: center;
  padding-block: var(--sp-section);
}
.product + .product { border-top: 1px solid var(--line); }
.product--flip .product__fig { order: 2; }
.product > * { min-width: 0; }
.product__fig { background: var(--panel); overflow: hidden; }
.product__fig img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: scale 700ms var(--ease-out); }
.product__fig:hover img { scale: 1.03; }
.product__body { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--sp-md); align-content: start; }
.product__body > * { min-width: 0; }
.product h2 { font-size: var(--text-xl); }
.product__meta { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; font-size: var(--text-sm); color: var(--ink-soft); font-weight: 600; }
.product__meta .stars { color: var(--maroon); }
.product__copy { color: var(--ink-soft); }
.specs { list-style: none; display: grid; gap: 0.5rem; font-size: var(--text-sm); color: var(--ink-soft); }
.specs li { display: flex; gap: 0.7rem; align-items: baseline; }
.specs li::before { content: ""; flex: none; width: 0.55rem; height: 2px; background: var(--maroon); translate: 0 -0.25em; }

/* variant pickers — every chip deep-links its ASIN */
.picker { margin-top: var(--sp-sm); }
.picker__label { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: var(--sp-sm); }
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; }
.chip { display: inline-flex; align-items: center; gap: 0.55rem; min-height: 44px; padding-right: 0.2rem; text-decoration: none; color: var(--ink); }
.chip__dot {
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  background-size: cover; background-position: center;
  box-shadow: inset 0 0 0 2px var(--white), 0 0 0 1px var(--line);
  transition: box-shadow var(--t-fast), scale var(--t-fast) var(--ease-out);
}
.chip__dot--buckle { width: 2.75rem; height: 2.75rem; }
.chip:hover .chip__dot { scale: 1.12; box-shadow: inset 0 0 0 2px var(--white), 0 0 0 2px var(--maroon); }
.chip__name { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.04em; }
.braid { background: repeating-linear-gradient(135deg, var(--c1) 0 5px, var(--c2) 5px 10px); }
.product__cta { margin-top: var(--sp-sm); }

/* ─── three-audience band ─── */
.band { background: var(--panel); padding-block: var(--sp-section); }
.band__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-xl); }
.band__item { display: grid; gap: var(--sp-sm); align-content: start; border-top: 3px solid var(--ink); padding-top: var(--sp-lg); }
.band__item h3 { font-size: clamp(1.5rem, 1rem + 1.6vw, 2.2rem); }
.band__item p { color: var(--ink-soft); }
.band__head { margin-bottom: var(--sp-2xl); display: grid; gap: var(--sp-sm); }
.band__head h2 { font-size: var(--text-xl); max-width: 18ch; }

/* ─── assurance ─── */
.assurance { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--sp-3xl); padding-block: var(--sp-section); align-items: start; }
.assurance h2 { font-size: var(--text-xl); margin-top: var(--sp-sm); max-width: 14ch; }
.assurance dl { border-top: 1px solid var(--line); }
.assurance .row { display: grid; grid-template-columns: minmax(8rem, 13rem) minmax(0, 1fr); gap: var(--sp-lg); padding-block: var(--sp-lg); border-bottom: 1px solid var(--line); }
.assurance dt { font-weight: 700; font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.06em; }
.assurance dd { color: var(--ink-soft); font-size: var(--text-sm); }

/* ─── closing band ─── */
.closing { background: var(--maroon-ink); color: var(--on-maroon); padding-block: var(--sp-section); overflow: clip; }
.closing h2 { font-size: var(--text-band); max-width: 14ch; }
.closing h2 em { color: var(--on-maroon-2); font-style: italic; }
.closing p { color: var(--on-maroon-2); margin-top: var(--sp-lg); font-size: var(--text-lg); }
.closing .btn { margin-top: var(--sp-xl); }

/* ─── footer ─── */
.site-foot { border-top: 1px solid var(--line); font-size: var(--text-sm); color: var(--ink-faint); }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: var(--sp-lg); align-items: center; justify-content: space-between; padding-block: var(--sp-xl); }
.site-foot a { color: var(--ink); text-decoration: none; font-weight: 600; }
.site-foot a:hover { color: var(--maroon); }

/* ─── reveal (LCP-safe: hero never fades from 0) ─── */
.fade { opacity: 0; translate: 0 16px; transition: opacity 520ms var(--ease-out), translate 520ms var(--ease-out); }
.fade.in { opacity: 1; translate: 0 0; }
.stagger > :nth-child(2) { transition-delay: 70ms; }
.stagger > :nth-child(3) { transition-delay: 140ms; }
.stagger > :nth-child(4) { transition-delay: 210ms; }

/* ─── responsive ─── */
@media (max-width: 56rem) {
  .hero__grid { grid-template-columns: minmax(0, 1fr); gap: var(--sp-lg); padding-block: var(--sp-lg) var(--sp-2xl); }
  .hero__fig { order: -1; aspect-ratio: 16 / 11; max-height: 40vh; width: 100%; }
  .hero h1 { margin-top: var(--sp-sm); }
  .hero__lede { font-size: var(--text-base); margin-top: var(--sp-md); }
  .hero__cta { margin-top: var(--sp-lg); }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts > div:nth-child(3) { border-left: 0; }
  .facts > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .product, .product--flip { grid-template-columns: minmax(0, 1fr); }
  .product--flip .product__fig { order: 0; }
  .band__grid { grid-template-columns: minmax(0, 1fr); }
  .assurance { grid-template-columns: minmax(0, 1fr); gap: var(--sp-xl); }
  .assurance .row { grid-template-columns: minmax(0, 1fr); gap: 0.3rem; }
  .site-nav .nav-link { display: none; }
  .chips { flex-wrap: nowrap; overflow-x: auto; padding-bottom: var(--sp-xs); scrollbar-width: thin; }
  .chip { flex: none; }
}
@media (max-width: 600px) {
  .site-nav { gap: var(--sp-sm); }
  .site-head .btn { padding: 0 0.95rem; min-height: 44px; font-size: 0.75rem; letter-spacing: 0.05em; }
  .site-head .btn .btn-long, .site-head .btn .arrow { display: none; }
  .site-head .btn .btn-short { display: inline; }
}
@media (max-width: 390px) {
  .brand { font-size: 0.92rem; font-stretch: 100%; letter-spacing: 0; }
  .lang-switch a { padding: 0 0.5rem; }
  .site-head .btn { padding: 0 0.75rem; font-size: 0.7rem; }
  .closing .btn { white-space: normal; text-align: left; padding-block: 0.8rem; }
  .facts > div { padding-inline: var(--sp-md); }
  .facts strong { font-stretch: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade { transition: opacity 200ms ease-out; translate: none; }
  .product__fig img, .btn .arrow { transition: none; }
}