/* ===== Variables & Reset ===== */
:root {
  --rojo: #D62828;
  --rojo-oscuro: #A4161A;
  --blanco: #FFFFFF;
  --gris-claro: #F5F5F5;
  --negro: #333333;
  --gris-medio: #888888;
  --sombra: 0 4px 20px rgba(0, 0, 0, 0.1);
  --sombra-hover: 0 8px 30px rgba(214, 40, 40, 0.2);
  --transicion: all 0.3s ease;
  --radio: 12px;
  --header-h: 70px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--negro);
  background: var(--blanco);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--blanco);
  box-shadow: var(--sombra);
  z-index: 1000;
  transition: var(--transicion);
}

.header.scrolled {
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo__img {
  height: 56px;
  width: auto;
  display: block;
  border-radius: 4px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__link {
  font-weight: 500;
  transition: var(--transicion);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--rojo);
  transition: var(--transicion);
}

.nav__link:hover,
.nav__link.active {
  color: var(--rojo);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__cart {
  position: relative;
  background: var(--gris-claro);
  padding: 8px 14px;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transicion);
}

.nav__cart:hover {
  background: var(--rojo);
  color: var(--blanco);
}

.nav__cart-count {
  background: var(--rojo);
  color: var(--blanco);
  font-size: 0.75rem;
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav__cart:hover .nav__cart-count {
  background: var(--blanco);
  color: var(--rojo);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--negro);
  border-radius: 2px;
  transition: var(--transicion);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicion);
  text-align: center;
}

.btn--primary {
  background: var(--rojo);
  color: var(--blanco);
}

.btn--primary:hover {
  background: var(--rojo-oscuro);
  transform: translateY(-2px);
  box-shadow: var(--sombra-hover);
}

.btn--outline {
  background: transparent;
  color: var(--rojo);
  border: 2px solid var(--rojo);
}

.btn--outline:hover {
  background: var(--rojo);
  color: var(--blanco);
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn--block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== Hero ===== */
.hero {
  margin-top: var(--header-h);
  min-height: calc(100vh - var(--header-h));
  background: linear-gradient(135deg, rgba(166,22,26,0.92) 0%, rgba(214,40,40,0.85) 50%, rgba(0,0,0,0.4) 100%),
    url('https://images.unsplash.com/photo-1604503468506-a8da13d82791?w=1920&q=80') center/cover;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero__content {
  position: relative;
  z-index: 1;
  color: var(--blanco);
  max-width: 650px;
  padding: 60px 0;
  animation: fadeInUp 0.8s ease;
}

.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.875rem;
  margin-bottom: 20px;
  backdrop-filter: blur(10px);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 32px;
}

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

.section--gray {
  background: var(--gris-claro);
}

.section__header {
  text-align: center;
  margin-bottom: 50px;
}

.section__tag {
  color: var(--rojo);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 15px;
}

.section__desc {
  color: var(--gris-medio);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about__image {
  border-radius: var(--radio);
  overflow: hidden;
  box-shadow: var(--sombra);
}

.about__image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-cards {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.about-card {
  background: var(--gris-claro);
  padding: 20px 24px;
  border-radius: var(--radio);
  border-left: 4px solid var(--rojo);
}

.about-card h4 {
  color: var(--rojo);
  margin-bottom: 8px;
}

/* ===== Benefits ===== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.benefit-card {
  background: var(--blanco);
  padding: 35px 25px;
  border-radius: var(--radio);
  text-align: center;
  box-shadow: var(--sombra);
  transition: var(--transicion);
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sombra-hover);
}

.benefit-card__icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--rojo), var(--rojo-oscuro));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
}

.benefit-card h3 {
  margin-bottom: 10px;
}

.benefit-card p {
  color: var(--gris-medio);
  font-size: 0.95rem;
}

/* ===== Products Grid ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 30px;
}

.product-card {
  background: var(--blanco);
  border-radius: var(--radio);
  overflow: hidden;
  box-shadow: var(--sombra);
  transition: var(--transicion);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sombra-hover);
}

.product-card__image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card__image img {
  transform: scale(1.08);
}

.product-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--rojo);
  color: var(--blanco);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-card__badge--out {
  background: var(--gris-medio);
}

.product-card__body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card__category {
  color: var(--rojo);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.product-card__name {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 8px 0;
}

.product-card__desc {
  color: var(--gris-medio);
  font-size: 0.875rem;
  margin-bottom: 15px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.product-card__price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--rojo);
}

.product-card__unit {
  font-size: 0.8rem;
  color: var(--gris-medio);
  font-weight: 400;
}

.product-card__actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* ===== Testimonials ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.testimonial-card {
  background: var(--blanco);
  padding: 30px;
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  font-size: 4rem;
  color: var(--rojo);
  opacity: 0.2;
  position: absolute;
  top: 10px;
  left: 20px;
  line-height: 1;
}

.testimonial-card__text {
  font-style: italic;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-card__avatar {
  width: 45px;
  height: 45px;
  background: var(--rojo);
  color: var(--blanco);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.testimonial-card__stars {
  color: #ffc107;
  font-size: 0.9rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--negro);
  color: var(--blanco);
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer__logo {
  height: 90px;
  width: auto;
  display: block;
  margin-bottom: 14px;
  border-radius: 6px;
}

.footer h4 {
  color: var(--rojo);
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.footer p, .footer li {
  color: rgba(255,255,255,0.7);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.footer__social {
  display: flex;
  gap: 12px;
  margin-top: 15px;
}

.footer__social a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transicion);
}

.footer__social a:hover {
  background: var(--rojo);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
}

/* ===== WhatsApp Float ===== */
.whatsapp-float {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--blanco);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transicion);
  animation: pulse 2s infinite;
}

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

/* ===== Catalog Filters ===== */
.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 40px;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 250px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 12px 20px 12px 45px;
  border: 2px solid var(--gris-claro);
  border-radius: 50px;
  font-size: 1rem;
  transition: var(--transicion);
}

.search-box input:focus {
  outline: none;
  border-color: var(--rojo);
}

.search-box__icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gris-medio);
}

.filter-select {
  padding: 12px 20px;
  border: 2px solid var(--gris-claro);
  border-radius: 50px;
  font-size: 1rem;
  background: var(--blanco);
  cursor: pointer;
  min-width: 180px;
}

.filter-select:focus {
  outline: none;
  border-color: var(--rojo);
}

/* ===== Cart Page ===== */
.page-header {
  margin-top: var(--header-h);
  background: linear-gradient(135deg, var(--rojo-oscuro), var(--rojo));
  color: var(--blanco);
  padding: 40px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2rem;
}

.cart-layout {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 40px;
  padding: 40px 0 80px;
}

.cart-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  margin-bottom: 15px;
  align-items: center;
}

.cart-item__image {
  width: 90px;
  height: 90px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}

.cart-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item__info {
  flex: 1;
}

.cart-item__name {
  font-weight: 700;
  margin-bottom: 4px;
}

.cart-item__price {
  color: var(--gris-medio);
  font-size: 0.9rem;
}

.cart-item__controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.qty-btn {
  width: 32px;
  height: 32px;
  border: 2px solid var(--gris-claro);
  background: var(--blanco);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transicion);
}

.qty-btn:hover {
  border-color: var(--rojo);
  color: var(--rojo);
}

.cart-item__qty {
  font-weight: 700;
  min-width: 30px;
  text-align: center;
}

.cart-item__total {
  font-weight: 700;
  color: var(--rojo);
  min-width: 100px;
  text-align: right;
}

.cart-item__remove {
  background: none;
  border: none;
  color: var(--gris-medio);
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transicion);
  padding: 5px;
}

.cart-item__remove:hover {
  color: var(--rojo);
}

.cart-summary {
  background: var(--gris-claro);
  padding: 30px;
  border-radius: var(--radio);
  height: fit-content;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.cart-summary h3 {
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--rojo);
}

.cart-summary__row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cart-summary__total {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--rojo);
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid #ddd;
}

.cart-empty {
  text-align: center;
  padding: 60px 20px;
}

.cart-empty__icon {
  font-size: 4rem;
  margin-bottom: 20px;
}

/* ===== Checkout Form ===== */
.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  padding: 40px 0 80px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.form-group label .required {
  color: var(--rojo);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gris-claro);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transicion);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--rojo);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--rojo);
}

.form-error {
  color: var(--rojo);
  font-size: 0.8rem;
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.checkout-form {
  background: var(--blanco);
  padding: 30px;
  border-radius: var(--radio);
  box-shadow: var(--sombra);
}

.checkout-form h2 {
  margin-bottom: 25px;
  color: var(--rojo);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transicion);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--blanco);
  border-radius: var(--radio);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: var(--transicion);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  border-bottom: 1px solid var(--gris-claro);
}

.modal__close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gris-medio);
}

.modal__body {
  padding: 25px;
}

.modal__image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 100px;
  right: 25px;
  background: var(--negro);
  color: var(--blanco);
  padding: 14px 24px;
  border-radius: 8px;
  z-index: 3000;
  transform: translateX(120%);
  transition: transform 0.3s ease;
  box-shadow: var(--sombra);
}

.toast.show {
  transform: translateX(0);
}

.toast--success {
  background: #28a745;
}

.toast--error {
  background: var(--rojo);
}

/* ===== Loading ===== */
.loading {
  text-align: center;
  padding: 60px;
  color: var(--gris-medio);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--gris-claro);
  border-top-color: var(--rojo);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 15px;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.7); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .about-grid,
  .cart-layout,
  .checkout-layout {
    grid-template-columns: 1fr;
  }

  .cart-summary {
    position: static;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--blanco);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    box-shadow: var(--sombra);
    transform: translateY(-120%);
    transition: var(--transicion);
  }

  .nav.open {
    transform: translateY(0);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .cart-item {
    flex-wrap: wrap;
  }

  .catalog-toolbar {
    flex-direction: column;
  }

  .search-box {
    width: 100%;
  }

  .filter-select {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero__content {
    padding: 40px 0;
  }

  .section {
    padding: 50px 0;
  }

  .product-card__actions {
    flex-direction: column;
  }

  .product-card__actions .btn {
    width: 100%;
  }
}