/*
 * Kumi Accesorios — Theme CSS
 * Mobile-first, variables CSS, tipografía, y clases BEM kumi-*
 *
 * Paleta basada en investigación UI/UX:
 * - Burgundy PRIMARY (#571c33): CTAs, nav, headings, footer
 * - Gold SECONDARY (#bd9028): hover, dividers, precios
 * - Neutrales cálidos (warm grays con undertone marrón)
 */

:root {
  /* Colores de marca */
  --color-primary: #571c33;
  --color-secondary: #bd9028;
  --color-light-gold: #e3c57e;
  --color-accent-rose: #984d65;
  --bg-warm: #faf6eb;
  --bg-rose: #fdf5f7;

  /* Neutrales cálidos */
  --neutral-900: #2d1f1f;
  --neutral-700: #5c4a4a;
  --neutral-500: #8a7a7a;
  --neutral-300: #d4c8c8;
  --neutral-100: #f5f0f0;
  --text-on-dark: #faf6eb;

  /* WhatsApp */
  --kumi-whatsapp: #25d366;

  /* Tipografía */
  --kumi-font-display: 'Playfair Display', Georgia, serif;
  --kumi-font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --kumi-font-decorative: 'Cormorant Garamond', Georgia, serif;

  /* Espaciado */
  --kumi-section-padding: 48px 16px;
  --kumi-container-max: 1100px;
  --kumi-radius: 8px;
  --kumi-radius-lg: 12px;
}

@media (min-width: 768px) {
  :root {
    --kumi-section-padding: 64px 24px;
  }
}

/* Reset mínimo */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--kumi-font-body);
  font-size: 17px;
  color: var(--neutral-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

/* --- Layout --- */
.kumi-container {
  max-width: var(--kumi-container-max);
  margin: 0 auto;
  padding: 0 16px;
}

.kumi-section {
  padding: var(--kumi-section-padding);
}

.kumi-section--warm {
  background: var(--bg-warm);
}

.kumi-section--rose {
  background: var(--bg-rose);
}

.kumi-section--dark {
  background: var(--color-primary);
  color: var(--text-on-dark);
}

/* --- Buttons --- */
.kumi-btn--primary {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-primary);
  color: var(--text-on-dark);
  font-family: var(--kumi-font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  border-radius: var(--kumi-radius);
  cursor: pointer;
  transition: background 0.2s;
}

.kumi-btn--primary:hover {
  background: #3d1324;
}

.kumi-btn--secondary {
  display: inline-block;
  padding: 12px 28px;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--kumi-font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--kumi-radius);
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
}

.kumi-btn--secondary:hover {
  background: var(--color-primary);
  color: var(--text-on-dark);
}

/* --- Product Card --- */
.kumi-product-card {
  background: #fff;
  border-radius: var(--kumi-radius-lg);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  display: block;
}

.kumi-product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(45, 31, 31, 0.1);
}

.kumi-product-card__image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--neutral-100);
}

.kumi-product-card__body {
  padding: 16px;
  text-align: center;
}

.kumi-product-card__name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--neutral-900);
  margin: 0 0 4px;
}

.kumi-product-card__price {
  color: var(--color-secondary);
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 12px;
}

.kumi-product-card__cta {
  display: inline-block;
  padding: 10px 24px;
  background: var(--kumi-whatsapp);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s;
}

.kumi-product-card__cta:hover {
  background: #1fa855;
}

/* --- WhatsApp FAB --- */
.kumi-whatsapp-fab {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 56px;
  height: 56px;
  background: var(--kumi-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 1000;
  transition: transform 0.2s;
  text-decoration: none;
}

.kumi-whatsapp-fab:hover {
  transform: scale(1.1);
}

.kumi-whatsapp-fab svg {
  width: 28px;
  height: 28px;
  fill: white;
}

/* --- Product Grid --- */
.kumi-product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (min-width: 640px) {
  .kumi-product-grid {
    gap: 20px;
  }
}

@media (min-width: 768px) {
  .kumi-product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (min-width: 1024px) {
  .kumi-product-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --- Lazy image --- */
.kumi-lazy {
  opacity: 0;
  transition: opacity 0.4s;
}

.kumi-lazy--loaded {
  opacity: 1;
}

/* --- Responsive nav (hamburger) --- */
.kumi-nav {
  display: none;
}

.kumi-nav--open {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0;
  background: var(--color-primary);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.kumi-nav--open a {
  color: var(--text-on-dark);
  font-size: 1.2rem;
  text-decoration: none;
  font-family: var(--kumi-font-display);
}

@media (min-width: 768px) {
  .kumi-nav {
    display: flex;
    gap: 24px;
  }

  .kumi-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
  }
}

/* --- Sticky CTA en product detail (mobile) --- */
.kumi-sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: #fff;
  border-top: 1px solid var(--neutral-300);
  z-index: 900;
  display: flex;
  justify-content: center;
}

@media (min-width: 768px) {
  .kumi-sticky-cta {
    display: none;
  }
}