/* ============================================
   BIVA · Sistema base
   Paleta y tipografía del Brand DNA Brief 2026
   ============================================ */

:root {
  --carbon: #333330;
  --carbon-soft: #3d3d39;
  --salvia: #8e9b79;
  --salvia-dark: #6b7a5c;
  --salvia-pale: #f0f4ec;
  --blanco-roto: #f3f3f3;
  --crema: #eeeae2;
  --slate: #787870;

  --font-display: "Gloock", "Cormorant Garamond", "Times New Roman", serif;
  --font-body: "Work Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --max: 1440px;
  --gutter: clamp(20px, 4vw, 64px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.55;
  color: var(--carbon);
  background: var(--blanco-roto);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

/* ============================================
   Banner mayorista sticky
   ============================================ */
.wholesale-banner {
  background: var(--carbon);
  color: var(--salvia-pale);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 9px var(--gutter);
  text-align: center;
  border-bottom: 1px solid rgba(142, 155, 121, 0.25);
  position: sticky;
  top: 0;
  z-index: 100;
}
.wholesale-banner .dot {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--salvia);
  margin: 0 12px;
  vertical-align: middle;
  transform: translateY(-1px);
}
.wholesale-banner a {
  color: var(--salvia);
  border-bottom: 1px solid rgba(142,155,121,0.4);
  padding-bottom: 1px;
  margin-left: 14px;
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}
.wholesale-banner a:hover { color: #b6c2a3; border-color: #b6c2a3; }

/* ============================================
   Nav
   ============================================ */
.nav {
  position: sticky;
  top: 36px;
  z-index: 90;
  background: rgba(243, 243, 243, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(51, 51, 48, 0.06);
  transition: background .35s var(--ease-out);
}
.nav.dark {
  background: rgba(51, 51, 48, 0.72);
  border-bottom: 1px solid rgba(142, 155, 121, 0.15);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav .wordmark {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--carbon);
  display: inline-flex;
  align-items: baseline;
}
.nav.dark .wordmark { color: var(--blanco-roto); }
.nav .wordmark .v { color: var(--salvia); }

.nav-links {
  display: flex;
  gap: 36px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.01em;
}
.nav-links a {
  color: var(--carbon);
  opacity: 0.78;
  transition: opacity .25s var(--ease-out);
  position: relative;
  padding: 4px 0;
}
.nav.dark .nav-links a { color: var(--blanco-roto); opacity: 0.72; }
.nav-links a:hover { opacity: 1; }
.nav-links a.active { opacity: 1; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--salvia);
}

.nav-cta {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--salvia-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid rgba(142, 155, 121, 0.5);
  border-radius: 999px;
  transition: all .3s var(--ease-out);
}
.nav.dark .nav-cta { color: var(--salvia); border-color: rgba(142, 155, 121, 0.4); }
.nav-cta:hover { background: var(--salvia); color: var(--blanco-roto); border-color: var(--salvia); }
.nav.dark .nav-cta:hover { background: var(--salvia); color: var(--carbon); }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ============================================
   Tipografía display
   ============================================ */
.eyebrow {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--salvia-dark);
}
.eyebrow.light { color: var(--salvia); }

.h-display {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(48px, 8vw, 132px);
  line-height: 0.96;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.h-section {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

.h-tagline {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.5;
  color: var(--slate);
  text-wrap: pretty;
  max-width: 56ch;
}

.h-tagline.light { color: rgba(243, 243, 243, 0.65); }

/* ============================================
   Botones
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 13px;
  letter-spacing: 0.05em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .35s var(--ease-out);
  font-family: var(--font-body);
  font-weight: 500;
}
.btn-primary {
  background: var(--salvia);
  color: var(--carbon);
}
.btn-primary:hover { background: #a3b08e; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--blanco-roto);
  border-color: rgba(243, 243, 243, 0.3);
}
.btn-ghost:hover { border-color: var(--salvia); color: var(--salvia); }
.btn-dark {
  background: var(--carbon);
  color: var(--blanco-roto);
}
.btn-dark:hover { background: #1f1f1d; }

.btn .arrow {
  width: 14px; height: 14px;
  transition: transform .35s var(--ease-out);
}
.btn:hover .arrow { transform: translateX(4px); }

/* ============================================
   Corner marks
   ============================================ */
.corner-marks { position: absolute; inset: 0; pointer-events: none; }
.corner-marks span {
  position: absolute;
  width: 28px; height: 28px;
  border: 1px solid var(--salvia);
  opacity: 0.55;
}
.corner-marks .tl { top: 24px; left: 24px; border-right: 0; border-bottom: 0; }
.corner-marks .tr { top: 24px; right: 24px; border-left: 0; border-bottom: 0; }
.corner-marks .bl { bottom: 24px; left: 24px; border-right: 0; border-top: 0; }
.corner-marks .br { bottom: 24px; right: 24px; border-left: 0; border-top: 0; }

/* ============================================
   Rule (línea con degradado salvia)
   ============================================ */
.rule {
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(142, 155, 121, 0.85) 50%,
    transparent 100%);
  border: 0;
  margin: 0;
}

/* ============================================
   Pills
   ============================================ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--salvia-dark);
  border: 1px solid rgba(142, 155, 121, 0.45);
  background: rgba(142, 155, 121, 0.10);
  border-radius: 999px;
  font-weight: 500;
}
.pill.light { color: var(--salvia); border-color: rgba(142, 155, 121, 0.4); }

/* ============================================
   Container
   ============================================ */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--carbon);
  color: rgba(243, 243, 243, 0.7);
  padding: 96px var(--gutter) 48px;
  font-size: 13px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 64px;
}
.footer .wordmark-big {
  font-family: var(--font-display);
  font-size: 56px;
  color: var(--blanco-roto);
  line-height: 1;
  margin-bottom: 16px;
}
.footer .wordmark-big .v { color: var(--salvia); }
.footer .tagline {
  font-size: 9px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--salvia);
  margin-bottom: 32px;
}
.footer h4 {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--salvia);
  font-weight: 500;
  margin-bottom: 20px;
}
.footer ul { list-style: none; }
.footer li { margin-bottom: 10px; }
.footer a { transition: color .25s var(--ease-out); }
.footer a:hover { color: var(--salvia); }
.footer-bottom {
  max-width: var(--max);
  margin: 64px auto 0;
  padding-top: 32px;
  border-top: 1px solid rgba(243,243,243,0.1);
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: rgba(243,243,243,0.5);
}
@media (max-width: 880px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; }
}

/* ============================================
   Animaciones de entrada al scroll
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal.delay-1 { transition-delay: .08s; }
.reveal.delay-2 { transition-delay: .16s; }
.reveal.delay-3 { transition-delay: .24s; }
.reveal.delay-4 { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================
   Imagen de producto · tratamiento cinematográfico unificado
   - contraste +6%, saturación -8%, leve brillo
   - tinte sage cálido sutil (mezcla con verde salvia oscuro)
   - frames con viñeteado interno y fondo crema
   ============================================ */
.product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter:
    contrast(1.06)
    saturate(0.92)
    brightness(1.015);
  transition: filter .6s var(--ease-out), transform .8s var(--ease-out);
}
.product-img.contain { object-fit: contain; padding: 8%; }

.product-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background-color: var(--crema);
  overflow: hidden;
  isolation: isolate;
}
/* Tinte cinematográfico unificado: capa salvia oscura en multiply muy suave
   + viñeteado radial para anclar el sujeto al centro */
.product-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 70% at 50% 45%,
      transparent 50%,
      rgba(51, 51, 48, 0.18) 100%);
  pointer-events: none;
  z-index: 2;
  mix-blend-mode: multiply;
  transition: opacity .5s var(--ease-out);
}
/* Tinte sage en overlay muy bajo para unificar paleta entre fotos */
.product-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(142, 155, 121, 0.05);
  pointer-events: none;
  z-index: 2;
  mix-blend-mode: soft-light;
}
.product-frame.square { aspect-ratio: 1/1; }
.product-frame.wide { aspect-ratio: 5/4; }
.product-frame.hero-ratio { aspect-ratio: 16/10; }
.product-frame.dark { background-color: #2a2a27; }
.product-frame.dark::before {
  background:
    radial-gradient(ellipse 80% 70% at 50% 45%,
      transparent 55%,
      rgba(0, 0, 0, 0.35) 100%);
}

/* Hover: la foto "despierta" — sube saturación, suaviza viñeta */
.cat-card:hover .product-img,
.vit-item:hover .product-img,
.featured:hover .product-img {
  filter: contrast(1.04) saturate(1.0) brightness(1.02);
  transform: scale(1.02);
}
.cat-card:hover .product-frame::before,
.vit-item:hover .product-frame::before { opacity: 0.55; }

/* ============================================
   Placeholder de producto (rayas + label)
   ============================================ */
.product-placeholder {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background-color: var(--crema);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(120, 120, 112, 0.07) 0px,
    rgba(120, 120, 112, 0.07) 1px,
    transparent 1px,
    transparent 12px
  );
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
}
.product-placeholder .label {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  opacity: 0.7;
  text-align: center;
  padding: 0 16px;
}
.product-placeholder.dark {
  background-color: #2a2a27;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(142, 155, 121, 0.08) 0px,
    rgba(142, 155, 121, 0.08) 1px,
    transparent 1px,
    transparent 12px
  );
}
.product-placeholder.dark .label { color: var(--salvia); opacity: 0.55; }