/* ====================================
   CATÁLOGO DE PRODUCTOS - CONPRE CONCRETOS
   Diseño moderno con cards y navegación sticky
   ==================================== */

/* Variables */
:root {
  --primary: #0B6B21;
  --primary-dark: #084f19;
  --primary-light: #e8f5e9;
  --accent-lime: #BAF235;
  --gold-accent: #ECC101;
  --dark: #1b2a38;
  --dark-light: #2d3e4f;
  --gray: #f5f5f5;
  --gray-dark: #e0e0e0;
  --gray-text: #666;
  --white: #ffffff;
  --shadow: 0 4px 15px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 25px rgba(0,0,0,0.15);
}

/* ===== NAVEGACIÓN STICKY DE CATEGORÍAS ===== */
.products-nav {
  background: var(--white);
  border-bottom: 1px solid var(--gray-dark);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.products-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.products-nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 5px;
}

.products-nav-item {
  margin: 0;
}

.products-nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 18px 24px;
  color: var(--dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
}

.products-nav-link:hover,
.products-nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--accent-lime);
  background: var(--primary-light);
}

.products-nav-link i {
  font-size: 18px;
}

.products-nav-cta {
  padding: 10px 0;
}

.products-nav-cta .vs-btn {
  padding: 12px 25px;
  font-size: 14px;
}

/* Mobile Nav */
@media (max-width: 991px) {
  .products-nav .container {
    flex-direction: column;
    padding: 10px 15px;
  }

  .products-nav-list {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 5px;
    -webkit-overflow-scrolling: touch;
  }

  .products-nav-link {
    padding: 12px 16px;
    font-size: 14px;
    white-space: nowrap;
  }

  .products-nav-cta {
    display: none;
  }
}

/* ===== INTRO SECTION ===== */
.products-intro {
  padding: 60px 0 40px;
  text-align: center;
}

.products-intro h2 {
  color: var(--dark);
  font-size: 36px;
  margin-bottom: 20px;
}

.products-intro p {
  color: var(--gray-text);
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== FILTROS POR APLICACIÓN ===== */
.products-filters {
  padding: 20px 0 40px;
}

.filters-label {
  color: var(--dark);
  font-weight: 600;
  margin-right: 15px;
  font-size: 15px;
}

.filters-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--white);
  border: 2px solid var(--gray-dark);
  color: var(--dark);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--accent-lime);
  border-color: var(--accent-lime);
  color: var(--dark);
  font-weight: 700;
}

.filter-btn i {
  font-size: 16px;
}

/* ===== SECCIONES DE CATEGORÍA ===== */
.products-category {
  padding: 60px 0;
  scroll-margin-top: 80px;
}

.products-category:nth-child(even) {
  background: var(--gray);
}

.category-header {
  margin-bottom: 40px;
}

.category-header h2 {
  color: var(--dark);
  font-size: 32px;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.category-header h2 i {
  color: var(--primary);
  font-size: 36px;
}

.category-header p {
  color: var(--gray-text);
  font-size: 16px;
  max-width: 700px;
  line-height: 1.6;
}

.category-badge {
  display: inline-block;
  background: var(--gold-accent);
  color: var(--dark);
  padding: 5px 15px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

/* ===== GRID DE PRODUCTOS ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

@media (max-width: 1199px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 991px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== PRODUCT CARDS ===== */
.product-card {
  background: var(--white);
  border: 1px solid var(--gray-dark);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.product-card-image {
  height: 160px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-image i {
  font-size: 60px;
  color: rgba(255,255,255,0.2);
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--gold-accent);
  color: var(--dark);
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.product-card-body {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-card-title {
  color: var(--dark);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.product-card-subtitle {
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 15px;
}

/* Barra de resistencia visual */
.resistance-bar {
  margin-bottom: 15px;
}

.resistance-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--gray-text);
  margin-bottom: 5px;
}

.resistance-bar-track {
  height: 6px;
  background: var(--gray-dark);
  overflow: hidden;
}

.resistance-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-lime) 0%, var(--primary) 100%);
  transition: width 0.5s ease;
}

.product-card-apps {
  color: var(--gray-text);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.product-card-apps strong {
  color: var(--dark);
  font-size: 12px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 5px;
}

.product-card-footer {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

.product-card-btn {
  flex: 1;
  padding: 12px 15px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.product-card-btn.primary {
  background: var(--primary);
  color: var(--white);
}

.product-card-btn.primary:hover {
  background: var(--accent-lime);
  color: var(--dark);
}

.product-card-btn.secondary {
  background: transparent;
  color: var(--dark);
  border: 2px solid var(--gray-dark);
}

.product-card-btn.secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.product-card-btn.whatsapp {
  background: #25D366;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.product-card-btn.whatsapp:hover {
  background: #1ebd5a;
  color: #fff;
}

.product-card-btn.whatsapp i {
  font-size: 16px;
}

/* ===== CARD ESPECIAL (Mortero) ===== */
.product-card-featured {
  grid-column: span 2;
  flex-direction: row;
}

.product-card-featured .product-card-image {
  width: 40%;
  height: auto;
  min-height: 250px;
}

.product-card-featured .product-card-body {
  width: 60%;
}

@media (max-width: 768px) {
  .product-card-featured {
    grid-column: span 1;
    flex-direction: column;
  }

  .product-card-featured .product-card-image,
  .product-card-featured .product-card-body {
    width: 100%;
  }

  .product-card-featured .product-card-image {
    min-height: 160px;
  }
}

/* ===== SECCIÓN PERSONALIZACIÓN ===== */
.products-customize {
  padding: 80px 0;
  background: var(--dark);
  color: var(--white);
}

.products-customize h2 {
  color: var(--white);
  font-size: 36px;
  text-align: center;
  margin-bottom: 15px;
}

.products-customize > .container > p {
  color: rgba(255,255,255,0.7);
  text-align: center;
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto 50px;
}

.customize-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

@media (max-width: 768px) {
  .customize-grid {
    grid-template-columns: 1fr;
  }
}

.customize-card {
  background: var(--white);
  padding: 35px;
}

.customize-card h3 {
  color: var(--dark);
  font-size: 22px;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 3px solid var(--gold-accent);
}

.customize-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.customize-list li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--gray-dark);
  color: var(--gray-text);
  font-size: 15px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.customize-list li:last-child {
  border-bottom: none;
}

.customize-list li i {
  color: var(--accent-lime);
  font-size: 14px;
  margin-top: 3px;
}

.customize-list li strong {
  color: var(--dark);
}

.customize-note {
  background: var(--primary-light);
  padding: 15px;
  margin-top: 20px;
  font-size: 13px;
  color: var(--dark);
  border-left: 3px solid var(--primary);
}

/* ===== GUÍA DE SELECCIÓN ===== */
.products-guide {
  padding: 80px 0;
  background: var(--gray);
}

.products-guide h2 {
  color: var(--dark);
  font-size: 36px;
  text-align: center;
  margin-bottom: 15px;
}

.products-guide > .container > p {
  color: var(--gray-text);
  text-align: center;
  font-size: 18px;
  margin-bottom: 50px;
}

.guide-tabs-container {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.guide-tab-btn {
  padding: 15px 30px;
  background: var(--white);
  border: 2px solid var(--gray-dark);
  color: var(--dark);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}

.guide-tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.guide-tab-btn.active {
  background: var(--gold-accent);
  border-color: var(--gold-accent);
  color: var(--dark);
  font-weight: 700;
}

.guide-tab-btn i {
  font-size: 20px;
}

.guide-panel {
  background: var(--white);
  padding: 40px;
  box-shadow: var(--shadow);
  display: none;
  animation: fadeIn 0.4s ease;
}

.guide-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.guide-panel h3 {
  color: var(--dark);
  font-size: 24px;
  margin-bottom: 25px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.guide-panel h3 i {
  color: var(--primary);
}

.guide-recommendations {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

@media (max-width: 768px) {
  .guide-recommendations {
    grid-template-columns: 1fr;
  }
}

.guide-rec-list h4 {
  color: var(--dark);
  font-size: 16px;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.guide-rec-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.guide-rec-list ul li {
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-dark);
  color: var(--gray-text);
  font-size: 15px;
}

.guide-rec-list ul li strong {
  color: var(--dark);
}

.guide-tip {
  background: var(--primary-light);
  padding: 20px;
  border-left: 4px solid var(--primary);
}

.guide-tip h4 {
  color: var(--dark);
  font-size: 16px;
  margin-bottom: 10px;
}

.guide-tip p {
  color: var(--gray-text);
  font-size: 14px;
  margin: 0;
  line-height: 1.6;
}

/* ===== DISCLAIMER ===== */
.products-disclaimer {
  background: #fff8e1;
  border-left: 5px solid #ffb300;
  padding: 25px 30px;
  margin: 60px 0;
}

.products-disclaimer p {
  margin: 0;
  color: var(--dark);
  font-size: 15px;
  line-height: 1.6;
}

.products-disclaimer strong {
  color: #e65100;
}

/* ===== ANIMACIONES DE FILTRO ===== */
.product-card.hidden {
  display: none;
}

.product-card.fade-in {
  animation: cardFadeIn 0.4s ease;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ===== MODAL DE DETALLES ===== */
.product-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.product-modal.active {
  display: flex;
}

.product-modal-content {
  background: var(--white);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.product-modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 40px;
  height: 40px;
  background: var(--dark);
  color: var(--white);
  border: none;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.product-modal-close:hover {
  background: var(--primary);
}

.product-modal-header {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
  padding: 40px 30px;
  color: var(--white);
}

.product-modal-header h3 {
  font-size: 28px;
  margin-bottom: 5px;
}

.product-modal-header span {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
}

.product-modal-body {
  padding: 30px;
}

.product-modal-body h4 {
  color: var(--dark);
  font-size: 16px;
  text-transform: uppercase;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
}

.product-modal-body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 25px;
}

.product-modal-body ul li {
  padding: 8px 0;
  color: var(--gray-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.product-modal-body ul li i {
  color: var(--primary);
}

.product-modal-footer {
  padding: 20px 30px;
  background: var(--gray);
  display: flex;
  gap: 15px;
}

.product-modal-footer .vs-btn {
  flex: 1;
  text-align: center;
  justify-content: center;
}

/* ===== RESPONSIVE GENERAL ===== */
@media (max-width: 768px) {
  .products-intro h2 {
    font-size: 28px;
  }

  .products-intro p {
    font-size: 16px;
  }

  .category-header h2 {
    font-size: 26px;
  }

  .products-customize h2,
  .products-guide h2 {
    font-size: 28px;
  }

  .customize-card {
    padding: 25px;
  }

  .guide-panel {
    padding: 25px;
  }

  .guide-tab-btn {
    padding: 12px 20px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .products-nav-link {
    padding: 10px 12px;
    font-size: 13px;
  }

  .product-card-body {
    padding: 20px;
  }

  .product-card-title {
    font-size: 18px;
  }
}